CN112494893A - Pull-up power assisting device capable of adjusting weight fraction load - Google Patents
Pull-up power assisting device capable of adjusting weight fraction load Download PDFInfo
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- CN112494893A CN112494893A CN202011383326.9A CN202011383326A CN112494893A CN 112494893 A CN112494893 A CN 112494893A CN 202011383326 A CN202011383326 A CN 202011383326A CN 112494893 A CN112494893 A CN 112494893A
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/12—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles
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Abstract
The invention discloses a pull-up power assisting device capable of adjusting weight fraction load, which comprises a main steel frame, a cylindrical rail, a support plate limiter, a support plate positioning pin, a top buffer spring, a bottom buffer spring, a pull rod, a fixed pulley, a power traction rope, a resistance traction rope and an adjusting fixed pulley. Two ends of the cylindrical track are connected to the main body steel frame through flanges, and the bottom buffer spring, the support plate stopper track groove, the pull rod track groove and the top buffer spring are arranged on the cylindrical track from bottom to top; the guide rail plate at the front end of the supporting plate is inserted into the supporting plate rail of the supporting plate limiter, and the fixed pulley and the adjusting fixed pulley are both arranged on the main body steel frame; the insertion position of the positioning hole of the traction rope positioning pin on the adjusting fixed pulley is adjusted, so that the reaction force of resistance acting on the power traction rope can be increased or reduced, and the purpose of increasing or reducing the required pull force for finishing the pull-up of the pull body is achieved.
Description
Technical Field
The invention relates to the technical field of pull-up auxiliary training devices, in particular to a pull-up power assisting device capable of adjusting weight fraction load
Background
The pull-up exercise is a multi-joint compound action exercise, is a better method for exercising upper limbs, and is an exercise mode which has the most muscles, the most complex movement mode and the most effective development of the muscle strength and muscle endurance of the skeletal muscles of the back in all exercise modes for developing the muscle strength and muscle endurance of the skeletal muscles of the back.
For trainers with relatively weak back muscles, it is often difficult to complete a complete pull-up action, so a corresponding power assisting device is needed to help the trainers to complete the pull-up action. However, the traditional pull-up power assisting device mainly comprises a counterweight power assisting device and an elastic belt power assisting device, the counterweight power assisting device is difficult to overcome the influence of counterweight acceleration on a trainer in motion and cannot provide stable and continuous power assisting for the trainer, the pull-up power assisting device follows hooke's law, the power assisting device is gradually reduced in the process of finishing pull-up motion, and the defects make the trainer difficult to rapidly enhance back muscle strength even under the help of the power assisting device. Therefore, a pull-up assisting device capable of adjusting weight fraction load becomes one of the urgent needs in the field.
Disclosure of Invention
The invention mainly solves the technical problem of providing the pull-up assisting device capable of adjusting weight fraction load, which can help a trainer to pull up under the condition of being suitable for self resistance and quickly enhance the strength of back muscles.
In order to solve the technical problems, the invention adopts a technical scheme that:
the utility model provides an adjustable weight fraction load pull-up booster unit which characterized in that: the device comprises a main steel frame 1, a cylindrical rail 2, a support plate limiter 3, a support plate 4, a support plate positioning bolt 5, a top buffer spring a6, a top buffer spring b7, a bottom buffer spring c8, a bottom buffer spring d9, a pull rod 10, a fixed pulley a11, a fixed pulley b12, a fixed pulley c13, a fixed pulley d14, a power traction rope a15, a resistance traction rope b16 and an adjusting fixed pulley 17. Two ends of the cylindrical track 2 are connected with the main steel frame 1 through flanges, and a bottom buffer spring c8, the left side of the track groove 32 of the support plate stopper, the left side of the track groove 102 of the pull rod and a top buffer spring b7 are arranged on the left cylindrical track 2 from bottom to top; the bottom buffer spring d9, the right side of the support plate stopper rail groove 32, the right side of the pull rod rail groove 102, and the top buffer spring a6 are installed on the right cylindrical rail 2 from bottom to top. The guide rail plate 42 at the front end of the support plate 4 is inserted into the support plate rail 31 of the support plate stopper 3, the support plate positioning bolt 5 passes through the support plate limiting hole 43 at the middle part of the front end of the support plate 4 and the support plate adjusting hole 33 at the middle part of the support plate stopper 3, and the fixed pulley a11, the fixed pulley b12, the fixed pulley c13, the fixed pulley d14 and the adjusting fixed pulley 17 are all arranged on the main steel frame 1.
The height of the steel frame 1 is 2.2m, the width is 0.8m, and the cross section of the square column is a square with the side length of 10 cm. Cylindrical track 2 is two solid metal cylinder that the external diameter is 7cm, and the surface is smooth, and cylindrical track 2 both ends are passed through the flange and are connected with main part steelframe 1, and two solid metal cylinder parallels, and the interaxial distance is 20 cm.
The support plate limiter 3 is composed of a support plate track 31, a support plate limiter track groove 32, a support plate adjusting hole 33 and a resistance traction rope hanging point 34, wherein the support plate track 31 is two metal plates, and a T-shaped groove is formed in the cross section of the support plate track 31; the support plate stopper track grooves 32 are two hollow metal circular tubes with an inner diameter of 7cm and a wall thickness of 1cm, the inner walls of the hollow metal circular tubes are smooth, the left side of the pull rod track groove 102 penetrates through the left side of the cylindrical track 2, and the right side of the pull rod track groove 102 penetrates through the right side of the cylindrical track 2. The backup pad regulation hole 33 is 19 through-holes that the diameter is 1cm, and the equidistant distribution is in backup pad stopper 3 middle part to the interval is 2cm, is used for adjusting the height of backup pad 4, and resistance haulage rope hangs the point 34 and welds in backup pad stopper 3 middle part, connects the one end of resistance haulage rope b 16.
The supporting plate 4 is composed of a supporting plate surface 41, a guide rail plate 42 and a supporting plate limiting hole 43, the bottom of the supporting plate surface 41 is a metal steel plate with the thickness of 4cm, and the upper part of the supporting plate surface is soft sponge with the thickness of 2 cm; the guide rail plate 42 is welded at the front end of the support plate surface 41, consists of two T-shaped columns and is tightly matched with the T-shaped groove of the support plate rail 31, the left side of the guide rail plate 42 is inserted into the T-shaped groove of the left support plate rail 31, and the right side of the guide rail plate 42 is inserted into the T-shaped groove of the right support plate rail 31; the supporting plate limiting hole 43 is a through hole with the diameter of 1cm and is positioned in the middle of the supporting plate 4; the front end of the supporting plate positioning bolt 5 is a cylinder with the length of 10cm and the diameter of 1cm, and the front end of the supporting plate positioning bolt simultaneously penetrates through the supporting plate limiting hole 43 and the supporting plate adjusting hole 33 to keep the relative stability of the supporting plate 4 and the supporting plate limiter 3.
The top buffer spring a6, the top buffer spring b7, the bottom buffer spring c8 and the bottom buffer spring d9 are of the same structure, the top buffer spring a6 comprises a spring a61, a top end gasket a62 and a bottom end gasket a63, the top end gasket a62 and the bottom end gasket a63 are respectively welded at two ends of the spring a61, the structures of the top buffer spring b7, the bottom buffer spring c8 and the bottom buffer spring d9 are described in detail later, the top buffer spring a6 penetrates through the right side of the cylindrical rail 2, the top buffer spring b7 penetrates through the left side of the cylindrical rail 2, the top buffer spring a6 and the top buffer spring b7 are connected with the top end gasket a62 and the top end gasket b72 of the main body steel frame 1 through flanges, and the top buffer spring a6 and the top buffer spring b7 can buffer the upward impact force of the pull rod 10 to protect equipment; the bottom buffer spring c8 passes through the left side of cylindrical track 2, and bottom buffer spring d9 passes the right side of cylindrical track 2, and bottom buffer spring c8 passes through flange joint with main part steelframe 1 bottom with bottom end gasket c83 and bottom end gasket d93 of bottom buffer spring d9, and bottom buffer spring c8 and bottom buffer spring d9 can cushion the downward impact force of backup pad stopper 3, protection training person's shank.
The pull rod 10 is composed of a main body pull rod 101, a pull rod track groove 102 and a power traction rope hanging point 103, wherein the pull rod track groove 102 is two hollow metal circular pipes with the inner diameter of 7cm and the wall thickness of 1cm, the inner wall of the hollow metal circular pipes is smooth, the left side of the pull rod track groove 102 penetrates through the left side of the cylindrical track 2, and the right side of the pull rod track groove 102 penetrates through the right side of the cylindrical track 2; the power traction rope hanging point 103 is welded in the middle of the main body pull rod 101 and is connected with one end of a power traction rope a 15.
The fixed pulley a11, the fixed pulley b12, the fixed pulley c13 and the fixed pulley d14 are of the same structure, the fixed pulley a11 consists of a base a111, a pulley a112, a hexagon bolt a113 and a hexagon nut a114, the diameter of the pulley a112 is 10cm, and a semicircular groove is formed in the periphery of the pulley a 112; the hexagonal bolt a113 and the hexagonal nut a114 are matched to fix the pulley a112 between two columns of the base a 111; the structures of the fixed pulley b12, the fixed pulley c13 and the fixed pulley d14 are described in detail later; the fixed pulley a11 is welded at the front end of the top of the main steel frame 1; the fixed pulley b12 is welded at the rear end of the top of the main steel frame 1; the fixed pulley c13 is welded in the middle of the bottom of the main steel frame 1; the fixed pulley d14 is welded in the middle of the main steel frame 1; the adjusting fixed pulley 17 consists of an adjusting fixed pulley base 171, an adjusting pulley 172, a resistance traction rope positioning pin a173, a power traction rope positioning pin b174, a round head bolt a175, a round head bolt b176 and a positioning hole 177, and the adjusting fixed pulley base 171 is welded in the middle of the main steel frame 1; the adjusting pulleys 172 are formed by welding 10 pulleys with radiuses of 15cm, 13.5cm, 12cm, 10.5cm, 9cm, 7.5cm, 6cm, 4.5cm, 3cm and 1.5cm and provided with semicircular grooves on the circumference coaxially, and each pulley is provided with 1 positioning hole 177 with the diameter of 8mm along the diameter of the pulley; the resistance traction rope positioning pin a173 and the power traction rope positioning pin b174 are inserted into different positioning holes 177; the round head bolts a175 and b176 are inserted into the shaft holes of the column of the base 171 and the adjustment pulley 172, and the adjustment pulley 172 is fixed to the base 171.
The top of the resistance haulage rope positioning pin a173 is provided with a circular through hole a1731 with the diameter of 6mm, and the lower end of the resistance haulage rope positioning pin a173 is provided with a cylindrical pin head a1732 with the length of 5cm and the diameter of 8 mm; the dynamic haulage rope positioning pin b174 and the resistance haulage rope positioning pin a173 are of the same structure, a circular through hole b1741 with the diameter of 6mm is formed in the top of the dynamic haulage rope positioning pin b174, and a cylindrical pin head b1742 with the length of 5cm and the diameter of 8mm is arranged at the lower end of the dynamic haulage rope positioning pin b 174.
One end of the power traction rope a15 is connected with the power traction rope hanging point 103, passes through the fixed pulley a11 and the fixed pulley b12, and the other end is fixed in the through hole b1741 of the power traction rope positioning pin b 174. One end of the resistance traction rope b16 is connected with the resistance traction rope hanging point 34, passes through the fixed pulley d14 and the fixed pulley c13, and the other end is fixed in the through hole a1731 of the resistance traction rope positioning pin a 173.
The resistance haulage rope locating pin a173 and the power haulage rope locating pin b174 are inserted in the locating hole 177 of the pulley of different radiuses, can realize changing the resistance when the chin is upwards, and its resistance is fixed weight proportion, and this help the training person to accomplish the training under the resistance that is fit for oneself, strengthens back strength more fast.
The invention has the beneficial effects that:
compared with the traditional pull-up power assisting device, the pull-up power assisting device capable of adjusting weight fraction load of the invention adjusts the back tension of a trainer and the length of the force arm of the gravity acting on the adjusting pulley through the pulley mechanism to achieve the aim of providing stable power assistance for the trainer, and the trainer can adjust through the pulley mechanism to realize the combination of various back tensions and the length of the force arm of the gravity acting on the adjusting pulley to obtain required resistance and meet the training requirements of trainees at different levels.
Drawings
FIG. 1 is a three-dimensional view of an adjustable weight fraction load pull-up assist apparatus of the present invention;
FIG. 2 is a left side view of a pull-up assist device for adjusting weight fraction load according to the present invention;
FIG. 3 is a three-dimensional view of a retainer for a support plate of a pull-up assist device for adjusting weight fraction load according to the present invention;
FIG. 4 is a three-dimensional view of a support plate of a pull-up assist device of the present invention for adjusting weight fraction load;
FIG. 5 is a three-dimensional view of a buffer spring set of an adjustable fractional weight pull-up booster of the present invention;
FIG. 6 is a three-dimensional view of a pull rod of a pull-up assist device of the present invention with adjustable weight fraction load;
FIG. 7 is a three-dimensional view of a fixed pulley of a pull-up assist device for adjusting weight fraction load according to the present invention;
FIG. 8 is a left side view of an adjusting fixed pulley of the pull-up booster of the present invention for adjusting weight fraction load;
FIG. 9 is a three-dimensional view of an adjustable fixed pulley of the pull-up assist apparatus for adjusting weight fraction load according to the present invention;
FIG. 10 is a three-dimensional view of a resistance puller rope locating pin of an adjustable weight fraction load pull-up assist device of the present invention;
FIG. 11 is a three-dimensional view of a power traction rope positioning pin of an adjustable weight fraction load pull-up assist device of the present invention;
Detailed Description
The invention is further described in detail below with reference to the drawings and the detailed description so that the advantages and features of the invention can be more easily understood by those skilled in the art, and the scope of the invention is more clearly and clearly defined.
The invention relates to an upward power assisting device capable of adjusting weight fraction load pull, which comprises a main steel frame 1, a cylindrical rail 2, a support plate stopper 3, a support plate 4, a support plate positioning bolt 5, a top buffer spring a6, a top buffer spring b7, a bottom buffer spring c8, a bottom buffer spring d9, a pull rod 10, a fixed pulley a11, a fixed pulley b12, a fixed pulley c13, a fixed pulley d14, a power traction rope a15, a resistance traction rope b16 and an adjusting fixed pulley 17; two ends of the cylindrical track 2 are connected with the main body steel frame 1 through flanges, and the bottom buffer spring c8, the left side of the track groove 32 of the support plate stopper, the left side of the track groove 102 of the pull rod and the top buffer spring b7 are arranged on the left side of the cylindrical track 2 from bottom to top. The bottom buffer spring d9, the right side of the support plate stopper rail groove 32, the right side of the pull rod rail groove 102 and the top buffer spring a6 are arranged on the right side of the cylindrical rail 2 from bottom to top; the guide rail plate 42 at the front end of the support plate 4 is inserted into the support plate rail 31 of the support plate stopper 3, the support plate positioning bolt 5 passes through the support plate limiting hole 43 at the middle part of the front end of the support plate 4 and the support plate adjusting hole 33 at the middle part of the support plate stopper 3, and the fixed pulley a11, the fixed pulley b12, the fixed pulley c13, the fixed pulley d14 and the adjusting fixed pulley 17 are all arranged on the main steel frame 1.
As a preferred embodiment of the present invention, as shown in fig. 1 and 2, the direction indicated by the hollow arrow in fig. 1 is the left direction, the steel frame 1 has a height of 2.2m and a width of 0.8m, and the cross section of the square column is a square with a side length of 10 cm; two ends of the cylindrical track 2 are connected with the main steel frame 1 through flanges, and the bottom buffer spring c8, the left side of the track groove 32 of the support plate stopper, the left side of the track groove 102 of the pull rod and the top buffer spring b7 are arranged on the left side of the cylindrical track 2 from bottom to top; the bottom buffer spring d9, the right side of the support plate stopper rail groove 32, the right side of the pull rod rail groove 102 and the top buffer spring a6 are arranged on the right side of the cylindrical rail 2 from bottom to top; a fixed pulley a11 is welded at the front end of the top of the main steel frame 1, a fixed pulley b12 is welded at the rear end of the top of the main steel frame 1, a fixed pulley c13 is welded at the middle of the bottom of the main steel frame 1, a fixed pulley d14 is welded at the middle of the main steel frame 1, and an adjusting fixed pulley base 171 is welded at the middle of the main steel frame 1; one end of the power traction rope a15 is connected with the power traction rope hanging point 103, penetrates through the fixed pulley a11 and the fixed pulley b12, the other end of the power traction rope a15 is fixed in the through hole 1741 of the power traction rope positioning pin b174, one end of the resistance traction rope b16 is connected with the resistance traction rope hanging point 34, penetrates through the fixed pulley d14 and the fixed pulley c13, and the other end of the resistance traction rope b16 is fixed in the through hole 1731 of the resistance traction rope positioning pin a 173.
As shown in fig. 3, the support plate stopper 3 is composed of a support plate rail 31, a support plate stopper rail groove 32, a support plate adjusting hole 33 and a resistance traction rope hanging point 34, the support plate rail 31 is two metal plates, and a T-shaped groove is formed on the cross section; the support plate stopper track grooves 32 are two hollow metal circular tubes with the inner diameter of 7cm and the inner diameter of 1cm, the inner walls are smooth, the distance between the shafts is 20cm, the left side of the pull rod track groove 102 penetrates through the left side of the cylindrical track 2, the right side of the pull rod track groove 102 penetrates through the right side of the cylindrical track 2, and the support plate stopper 3 is controlled to move only in the vertical direction; the backup pad regulation hole 33 is 19 through-holes that the diameter is 1cm, and the equidistant distribution is in backup pad stopper 3 middle part, and the interval is 2cm for adjust the height of backup pad 4, with the training person and the different pulling force load of adaptation different heights, the resistance haulage rope hangs some 34 welding in backup pad stopper 3 middle part, is used for connecting the one end of resistance haulage rope b 16.
As shown in fig. 4, the support plate 4 is composed of a support plate surface 41, a rail plate 42, and a support plate stopper hole 43, and the bottom of the support plate surface 41 is a metal steel plate with a thickness of 4cm, and the upper part is a soft sponge with a thickness of 2 cm. The guide rail plate 42 is welded at the front end of the support plate surface 41, consists of two T-shaped columns and is tightly matched with the T-shaped groove of the support plate rail 31, the left side 42 of the guide rail plate is inserted into the T-shaped groove of the left support plate rail 31, the right side 42 of the guide rail plate is inserted into the T-shaped groove of the right support plate rail 31, and the control support plate 4 can only move in the vertical direction; the supporting plate limiting hole 43 is a through hole with the diameter of 1cm and is positioned in the middle of the supporting plate 4. The front end of the supporting plate positioning bolt 5 is a cylinder with the diameter of 1cm and the length of 10cm, and the front end of the supporting plate positioning bolt simultaneously penetrates through the supporting plate limiting hole 43 and the supporting plate adjusting hole 33 to keep the relative stability of the supporting plate 4 and the supporting plate limiter 3.
As shown in fig. 5, the top cushion spring a6, the top cushion spring b7, the bottom cushion spring c8 and the bottom cushion spring d9 have the same structure, the top cushion spring a6 includes a spring a61, a top end pad a62 and a bottom end pad a63, and the top end pad a62 and the bottom end pad a63 are respectively welded to both ends of the spring a 61.
The top buffer spring b7 comprises a spring b71, a top end gasket b72 and a bottom end gasket b73, and the top end gasket b72 and the bottom end gasket b73 are welded at two ends of the spring b71 respectively. The bottom buffer spring c8 comprises a spring c81, a top end gasket c82 and a bottom end gasket c83, and the top end gasket c82 and the bottom end gasket c83 are welded at two ends of the spring c81 respectively. The bottom buffer spring d9 comprises a spring d91, a top end gasket d92 and a bottom end gasket d93, wherein the top end gasket d92 and the bottom end gasket d93 are welded at two ends of the spring d91 respectively. The top buffer spring a6 penetrates through the right side of the cylindrical rail 2, the top buffer spring b7 penetrates through the left side of the cylindrical rail 2, the top buffer spring a6 and a top gasket a62 and a top gasket b72 of the top buffer spring b7 are connected with the top of the main steel frame 1 through flanges, and the top buffer spring a6 and the top buffer spring b7 can buffer the upward impact force of the pull rod 10 and protect equipment; bottom buffer spring c8 passes the left side of cylindrical track 2, and bottom buffer spring d9 passes the right side of cylindrical track 2, and bottom buffer spring c8 passes through flange joint with main part steelframe 1 bottom with bottom end gasket c83 and bottom end gasket d93 of bottom buffer spring d9, and bottom buffer spring c8 and bottom buffer spring d9 can cushion the downward impact force of backup pad stopper 3, protection training person's shank.
As shown in fig. 6, the pull rod 10 is composed of a main body pull rod 101, a pull rod rail groove 102 and a power traction rope hanging point 103, the pull rod rail groove 102 is two hollow metal circular tubes with an inner diameter of 7cm and a wall thickness of 1cm, the distance between the axes is 20cm, the inner wall is smooth, the left side of the pull rod rail groove 102 penetrates through the left side of the cylindrical rail 2, the right side of the pull rod rail groove 102 penetrates through the right side of the cylindrical rail 2, the control pull rod 10 can only move in the vertical direction, and the power traction rope hanging point 103 is welded in the middle of the main body pull rod 101 and used for connecting one end of a power traction rope 15.
As shown in FIG. 7, the fixed pulley a11, the fixed pulley b12, the fixed pulley c13 and the fixed pulley d14 are all the same in structure, the fixed pulley a11 is composed of a base a111, a pulley a112, a hexagon bolt a113 and a hexagon nut a114, a semicircular groove is formed in the periphery of the pulley a112 for placing a traction rope and keeping the traction rope stable, and the hexagon bolt a113 and the hexagon nut a114 are matched to fix the pulley a112 between two uprights of the base a 111. The fixed pulley b12 is composed of a base b121, a pulley b122, a hexagon bolt b123 and a hexagon nut b124, a semicircular groove is formed in the periphery of the pulley b122 and used for placing a traction rope and keeping the traction rope stable, and the hexagon bolt b123 and the hexagon nut b124 are matched to fix the pulley b122 between two columns of the base b 121. The fixed pulley c13 is composed of a base c131, a pulley c132, a hexagon bolt c133 and a hexagon nut c134, a semicircular groove is formed in the periphery of the pulley c132 and used for placing a traction rope and keeping the traction rope stable, and the hexagon bolt c133 and the hexagon nut c134 are matched to fix the pulley c132 between two vertical columns of the base c 131. The fixed pulley d14 comprises a base d141, a pulley d142, a hexagon bolt d143 and a hexagon nut d144, wherein a semicircular groove is formed in the periphery of the pulley d142 and used for placing a traction rope and keeping the traction rope stable, and the hexagon bolt d143 and the hexagon nut d144 are matched to fix the pulley d142 between two columns of the base d 141.
As shown in fig. 8 and 9, the adjusting fixed pulley 17 is composed of an adjusting fixed pulley base 171, an adjusting pulley 172, a resistance traction rope positioning pin a173, a power traction rope positioning pin b174, a round head bolt a175, a round head bolt b176 and a positioning hole 177, and the adjusting fixed pulley base 171 is welded in the middle of the main steel frame 1. The adjusting pulleys 172 are formed by welding 10 pulleys with radiuses of 15cm, 13.5cm, 12cm, 10.5cm, 9cm, 7.5cm, 6cm, 4.5cm, 3cm and 1.5cm and provided with semicircular grooves on the circumference coaxially, and each pulley is provided with a positioning hole 177 with the diameter of 8mm along the diameter. The resistance traction rope positioning pin a173 and the power traction rope positioning pin b174 are inserted into the positioning holes 177 of the pulleys with different radiuses; the round head bolts a175 and b176 are inserted into the shaft holes of the column of the base 171 and the adjustment pulley 172, and the adjustment pulley 172 is fixed to the base 171. As shown in fig. 10 and 11, the top of the resistance haulage rope positioning pin a173 is provided with a circular through hole 1731 with the diameter of 6mm, and the lower end is provided with a cylindrical pin head a1732 with the length of 5cm and the diameter of 8 mm; the dynamic haulage rope positioning pin b174 and the resistance haulage rope positioning pin a173 are of the same structure, a circular through hole b1741 with the diameter of 6mm is arranged at the top of the dynamic haulage rope positioning pin b174, and a cylindrical pin head 1742 with the length of 5cm and the diameter of 8mm is arranged at the lower end of the dynamic haulage rope positioning pin b174
Referring to fig. 1 and 2, before using the power assisting device, the trainer should adjust the insertion positions of the resistance traction rope positioning pin a173 and the power traction rope positioning pin b174 on the fixed pulley 17 according to the self condition (if the power traction rope positioning pin b174 is inserted into the positioning hole 177 of the pulley with the radius of 15cm, the resistance traction rope positioning pin a173 is inserted into the positioning hole 177 of the pulley with the radius of 1.5cm, according to the proportional relationship of the moment arms, the trainer can complete the pull-up action only by the pulling force larger than the self weight 1/10, and so on, when the power traction rope positioning pin b174 is inserted into the positioning hole 177 of the pulley with the radius of 15cm, the insertion positions of the resistance traction rope positioning pin a173 are adjusted to control the resistances of 1/10, 2/10, 3/10, 4/10, 5/10, 6/10, 7/10, 1/10, 3526, 3/10 and 3/10, 8/10, 9/10; when the power traction rope positioning pin b174 is inserted into the positioning hole 177 of the pulley having a radius of 13.5cm, by adjusting the insertion position of the resistance traction rope positioning pin a173, 1/9, 2/9, 3/9, 4/9, 5/9, 6/9, 7/9, 8/9 and 10/9 capable of controlling resistance of the body weight, i.e. for the trainee with strong back muscles, the training amount can be strengthened by adjusting the fixed pulley 17 to make the resistance larger than the self weight), and then the supporting plate positioning bolt 5 is pulled out, after adjusting the relative height of the supporting plate 4 and the supporting plate limiter 3 according to the self height, the supporting plate positioning bolt 5 is inserted back into the supporting plate limiting hole 43 and the proper supporting plate adjusting hole 33, finally, kneeling the two knees on the support plate surface 41, and tightly holding the two ends of the main body pull rod 101 by the two hands, the pull-up training can be carried out.
In conclusion, the pull force and the resistance force when the pull body is pulled upwards are respectively controlled on the two traction ropes, the other ends of the two traction ropes are fixed at the circumferential position of the adjusting pulley, the reaction force of the resistance force acting on the pull force traction ropes is amplified or reduced according to the force arm proportional relation, the training requirements of different trainers are met, the trainers with weak back strength can complete the pull-up action, the self-confidence is enhanced, and the back muscle strength is rapidly improved.
Claims (9)
1. The utility model provides an adjustable weight fraction load pull-up booster unit which characterized in that: the device comprises a main steel frame (1), a cylindrical rail (2), a support plate limiter (3), a support plate (4), a support plate positioning bolt (5), a top buffer spring a (6), a top buffer spring b (7), a bottom buffer spring c (8), a bottom buffer spring d (9), a pull rod (10), a fixed pulley a (11), a fixed pulley b (12), a fixed pulley c (13), a fixed pulley d (14), a power traction rope a (15), a resistance traction rope b (16) and an adjusting fixed pulley (17); two ends of the cylindrical track (2) are connected with the main body steel frame (1) through flanges, and a bottom buffer spring c (8), the left side of the support plate stopper track groove (32), the left side of the pull rod track groove 102 and a top buffer spring b (7) are arranged on the left cylindrical track (2) from bottom to top; the bottom buffer spring d (9), the right side of the support plate stopper track groove (32), the right side of the pull rod track groove 102 and the top buffer spring a (6) are arranged on the right cylindrical track (2) from bottom to top; guide rail plate (42) of backup pad (4) front end is inserted in backup pad track (31) of backup pad stopper (3), backup pad locating bolt (5) pass backup pad (4) front end middle part backup pad spacing hole (43) and backup pad regulation hole (33) of backup pad stopper (3) middle part, fixed pulley a (11), fixed pulley b (12), fixed pulley c (13), fixed pulley d (14) and regulation fixed pulley (17) all install on main body steelframe (1).
2. The pull-up force assisting device capable of adjusting weight fraction load according to claim 1, wherein: cylindrical track (2) are two solid metal cylinder that the external diameter is 7cm, and the surface is smooth, and cylindrical track (2) both ends are passed through flange joint and are connected with main part steelframe (1), and two solid metal cylinder parallels, and the interaxial distance is 20 cm.
3. The pull-up force assisting device capable of adjusting weight fraction load according to claim 1, wherein: the support plate limiter (3) is composed of a support plate track (31), a support plate limiter track groove (32), a support plate adjusting hole (33) and a resistance traction rope hanging point (34), the support plate track (31) is composed of two metal plates, and a T-shaped groove is formed in the cross section of the support plate track; the support plate stopper track grooves (32) are two hollow metal round pipes with the inner diameter of 7cm and the wall thickness of 1cm, the inner walls of the hollow metal round pipes are smooth, the left side of the pull rod track groove (102) penetrates through the left side of the cylindrical track (2), and the right side of the pull rod track groove (102) penetrates through the right side of the cylindrical track (2); the support plate adjusting holes (33) are 19 through holes with the diameter of 1cm, the through holes are distributed in the middle of the support plate limiting stopper (3) at equal intervals, and the resistance traction rope hanging points (34) are welded in the middle of the support plate limiting stopper (3) and connected with one end of the resistance traction rope b (16).
4. The pull-up force assisting device capable of adjusting weight fraction load according to claim 1, wherein: the supporting plate (4) is composed of a supporting plate surface (41), a guide rail plate (42) and a supporting plate limiting hole (43), the bottom of the supporting plate surface (41) is a metal steel plate with the thickness of 4cm, and the upper part of the supporting plate surface is soft sponge with the thickness of 2 cm; the guide rail plate (42) is welded at the front end of the support plate surface (41), consists of two T-shaped columns and is tightly matched with the T-shaped groove of the support plate rail (31), the left side of the guide rail plate (42) is inserted into the T-shaped groove of the left support plate rail (31), and the right side of the guide rail plate (42) is inserted into the T-shaped groove of the right support plate rail (31); the supporting plate limiting hole (43) is a through hole with the diameter of 1cm and is positioned in the middle of the supporting plate (4); the front end of the supporting plate positioning bolt (5) is a cylinder with the length of 10cm and the diameter of 1cm, and the front end of the supporting plate positioning bolt (5) simultaneously penetrates through the supporting plate limiting hole (43) and the supporting plate adjusting hole (33).
5. The pull-up force assisting device capable of adjusting weight fraction load according to claim 1, wherein: the top buffer spring a (6), the top buffer spring b (7), the bottom buffer spring c (8) and the bottom buffer spring d (9) are of the same structure, the top buffer spring a (6) comprises a spring a (61), a top end gasket a (62) and a bottom end gasket a (63), the top end gasket a (62) and the bottom end gasket a (63) are respectively welded at two ends of the spring a (61), the structures of the top buffer spring b (7), the bottom buffer spring c (8) and the bottom buffer spring d (9) are described in detail later, the top buffer spring a (6) penetrates through the right cylindrical rail (2), the top buffer spring b (7) penetrates through the left cylindrical rail (2), a top end gasket a (62) and a top end gasket b (72) of the top buffer spring a (6) and the top buffer spring b (7) are connected with the top of the main body steel frame (1) through flanges; bottom buffer spring c (8) pass the left side of cylindrical rail (2), and bottom buffer spring d (9) pass the right side of cylindrical rail (2), and flange joint is passed through with the bottom of main part steelframe (1) in bottom buffer spring c (8) and bottom gasket c (83) and bottom gasket d (93) of bottom buffer spring d (9).
6. The pull-up force assisting device capable of adjusting weight fraction load according to claim 1, wherein: the pull rod (10) is composed of a main body pull rod (101), a pull rod track groove (102) and a power traction rope hanging point (103), the pull rod track groove (102) is two hollow metal circular pipes with the inner diameter of 7cm and the wall thickness of 1cm, the inner wall of each hollow metal circular pipe is smooth, the left side of the pull rod track groove (102) penetrates through the left side of the cylindrical track (2), and the right side of the pull rod track groove (102) penetrates through the right side of the cylindrical track (2); the power traction rope hanging point (103) is welded in the middle of the main body pull rod (101) and is connected with one end of the power traction rope a (15).
7. The pull-up force assisting device capable of adjusting weight fraction load according to claim 1, wherein: the fixed pulley a (11), the fixed pulley b (12), the fixed pulley c (13) and the fixed pulley d (14) are of the same structure, and the fixed pulley a (11) consists of a base a (111), a pulley a (112), a hexagon bolt a (113) and a hexagon nut a (114); the pulley a (112) is fixed between two columns of the base (111) by the cooperation of the hexagon bolt a (113) and the hexagon nut a (114); the structures of the fixed pulley b (12), the fixed pulley c (13), and the fixed pulley d (14) will be described in detail later; the fixed pulley a (11) is welded at the front end of the top of the main steel frame (1); the fixed pulley b (12) is welded at the rear end of the top of the main steel frame (1); the fixed pulley c (13) is welded in the middle of the bottom of the main steel frame (1); the fixed pulley d (14) is welded in the middle of the main steel frame (1); the adjusting fixed pulley (17) consists of an adjusting fixed pulley base (171), an adjusting pulley (172), a resistance traction rope positioning pin a (173), a power traction rope positioning pin b (174), a round head bolt a (175), a round head bolt b (176) and a positioning hole (177), and the adjusting fixed pulley base (171) is welded in the middle of the main steel frame (1); the adjusting pulleys (172) are formed by welding 10 pulleys with radiuses of 15cm, 13.5cm, 12cm, 10.5cm, 9cm, 7.5cm, 6cm, 4.5cm, 3cm and 1.5cm and provided with semicircular grooves on the circumference coaxially, and each pulley is provided with 1 positioning hole (177) with the diameter of 8mm along the diameter of the pulley; a resistance traction rope positioning pin a (173) and a power traction rope positioning pin b (174) are inserted into positioning holes (177) of pulleys with different radiuses; the round head bolt a (175) and the round head bolt b (176) are inserted into the shaft holes of the upright post of the base (171) and the adjusting pulley (172).
8. The pull-up force assisting device capable of adjusting weight fraction load according to claim 10, wherein: the top of the resistance haulage rope positioning pin a (173) is provided with a circular through hole a (1731) with the diameter of 6mm, and the lower end of the resistance haulage rope positioning pin a (173) is provided with a cylindrical pin head a (1732) with the length of 5cm and the diameter of 8 mm; the dynamic haulage rope positioning pin b (174) and the resistance haulage rope positioning pin a (173) are of the same structure, a circular through hole b (1741) with the diameter of 6mm is formed in the top of the dynamic haulage rope positioning pin b (174), and a cylindrical pin head b (1742) with the length of 5cm and the diameter of 8mm is arranged at the lower end of the dynamic haulage rope positioning pin b (174).
9. The pull-up force assisting device capable of adjusting weight fraction load according to claim 1, wherein: one end of the power traction rope a (15) is connected with a power traction rope hanging point (103), penetrates through the fixed pulley a (11) and the fixed pulley b (12), and the other end of the power traction rope a (15) is fixed in a through hole b (1741) of the power traction rope positioning pin b (174); one end of a resistance traction rope b (16) is connected with a resistance traction rope hanging point (34), penetrates through the fixed pulley d (14) and the fixed pulley c (13), and the other end of the resistance traction rope b is fixed in a through hole a (1731) of a resistance traction rope positioning pin a (173).
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Cited By (1)
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| CN117122886A (en) * | 2023-05-11 | 2023-11-28 | 龙泉剑村科技有限公司 | Human body tension testing device |
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| CN112494893B (en) | 2021-08-10 |
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