CN111150963A - A rowing machine with dual water tanks - Google Patents

Abstract

The invention relates to the technical field of fitness equipment, in particular to a rowing machine with double water tanks. This rowing machine with two water tanks, including aircraft nose, frame, the aircraft nose with the frame is articulated to be connected, the frame can follow the operating position upwards rotation to vertical ascending folding position, the aircraft nose includes the aircraft nose base, is fixed in a pair of water tank, pulling force subassembly and drive mechanism on this aircraft nose base, and is a pair of the water tank is located respectively pulling force subassembly's both sides, the vertical rotation axis that is equipped with in water tank center, this rotation axis are connected with and are located paddle structure in the water tank, pulling force subassembly passes through drive mechanism drives the rotation axis rotates. In the invention, the rowing machine is provided with a pair of water tanks, the single water tank is small in size, and the pull rope assembly is positioned between the two water tanks, so that the overall occupied space of the rowing machine head is reduced; and the water tank is vertically arranged, and the water resistance of the blade structure of the water tank which is horizontally arranged is uniform.

Description

Rowing machine with two water tanks

Technical Field

The invention relates to the technical field of fitness equipment, in particular to a rowing machine with double water tanks.

Background

The rowing machine is a device for simulating rowing exercise, has a good effect on strengthening muscles of legs, waist, upper limbs, chest and back, exercises that a person bends legs and sits on a sliding stool, applies force to hands and feet simultaneously, enables the legs to be straightened, enables the waist to lean backwards, enables the arms to be pulled backwards to two sides, and simulates rowing.

The Chinese utility model patent with the publication number of CN206007976U discloses an adjustable water resistor for fitness equipment, belonging to the technical field of fitness equipment, comprising a box body, wherein a baffle is transversely arranged in the box body and divides the box body into an upper chamber and a lower chamber; a rotating shaft is vertically arranged in the center of the box body, and a plurality of water resistance sheets are arranged at the bottom of the rotating shaft in the lower chamber; an upper water pipe with an upper end surface higher than one section of the partition plate is arranged on the partition plate close to the edge, and a lower water controller is arranged on the partition plate close to the center. The utility model discloses a can adjust the water yield that the interior water of cavity hinders liquid down as required to the resistance size of control fitness equipment.

Please refer to fig. 1, a chinese patent with an authorization publication number of CN108235688B discloses a water resistance rowing exercise machine, which includes a bracket, a water tank fixed on the bracket, a linkage mechanism and a corner adjusting mechanism, wherein a first impeller and a second impeller are arranged inside the water tank, the first impeller includes a first plate portion and a plurality of first blades distributed around the first plate portion, the second impeller includes a second plate portion and a plurality of second blades distributed around the second plate portion; the rotation angle adjusting mechanism is used for adjusting the relative rotation angle between the first impeller and the second impeller so as to enable the first blade and the second blade to be close to or far away from each other. By adopting the technical scheme, the distance between the first blade and the second blade can be adjusted by adjusting the relative rotation angle of the first impeller and the second impeller, and then the resistance received by the rotation of the two impellers in the water tank is adjusted, so that the effect of adjusting the resistance of the water resistance rowing body builder is achieved.

In the prior art, the adjustable water resistor of the fitness equipment adopts a single water tank type, the volume of the single water tank is large, the pull rope component is positioned above the water tank, and the occupied space of a rowing machine head is large.

The water tank of the water resistance rowing body builder is horizontally arranged, and when the water resistance rowing body builder is used, because the water in the water tank is not fully filled, when the water resistance rowing body builder rotates, a part of the first impeller and the second impeller (blade structures) cannot contact water, and the resistance of the first impeller and the second impeller (blade structures) is uneven.

Disclosure of Invention

The invention aims to provide a double-water-tank rowing machine, which has the advantages that the volume of a single water tank is small, a pull rope assembly is arranged between two water tanks, and the overall occupied space of a rowing machine head is reduced.

In order to achieve the advantages, the double-water-tank rowing machine provided by the invention comprises a machine head and a machine frame, wherein the machine head is hinged with the machine frame, the machine frame can rotate upwards from a working position to a vertically upward folding position, the machine head comprises a machine head base, a pair of water tanks fixed on the machine head base, a tension assembly and a transmission mechanism, the pair of water tanks are respectively positioned on two sides of the tension assembly, a rotating shaft is vertically arranged in the center of each water tank, the rotating shaft is connected with a paddle structure positioned in the corresponding water tank, and the tension assembly drives the rotating shaft to rotate through the transmission mechanism.

In one embodiment of the invention, the water tank comprises a water tank base and a water tank upper cover, the water tank base and the water tank upper cover are connected in a sealing manner, the water tank base and the water tank upper cover are respectively provided with a lower pipe body and an upper pipe body which are used for connecting the rotating shaft, and the upper end and the lower end of the rotating shaft are respectively connected with the lower pipe body and the upper pipe body in a sealing manner in a rotating manner.

In one embodiment of the present invention, the upper and lower ends of the rotating shaft are respectively provided with a seal ring groove for mounting a seal ring.

In one embodiment of the present invention, the water tank is connected with an adjuster for adjusting the rotation resistance of the rotating shaft, the adjuster includes a torsion portion exposed outside the water tank, a plurality of elastic jaws evenly arranged around the circumference of the rotating shaft, and a connecting body connecting the torsion portion and the plurality of elastic jaws, and the greater the gripping force of the elastic jaws on the rotating shaft, the greater the rotation resistance of the rotating shaft.

In one embodiment of the invention, the tension assembly comprises a tension braid, a weaving wheel shaft and a tension hand tube, one end of the tension braid is connected with the tension hand tube, the other end of the tension braid is connected with the weaving wheel and wound on the weaving wheel, and the weaving wheel is sleeved on the weaving wheel shaft.

In one embodiment of the invention, the transmission mechanism comprises a bevel gear a, a bevel gear B, a transmission shaft, a primary synchronous pulley and a secondary synchronous pulley, the bevel gears a are respectively fixed at two ends of the transmission shaft, the bevel gears B are respectively connected and fixed with the rotating shaft, and the bevel gears a and the bevel gears B are meshed with each other; the main synchronous belt wheel is fixed on the wheel shaft of the weaving belt wheel, and the auxiliary synchronous belt wheel is fixed on the transmission shaft.

In one embodiment of the present invention, the rowing machine further includes a locking portion for restricting the frame from rotating to hold the frame in the working position, and a fixing portion for fixing the frame rotated to the folded position.

In one embodiment of the invention, the rack comprises a folding pipe, a sliding rail fixing pipe and a tailstock bracket which are fixedly connected in sequence, wherein a folding connecting piece is fixed at the end part of the folding pipe, the sliding rail fixing pipe is connected with a cushion in a sliding manner, and the tailstock bracket is connected with an adjusting foot pad.

In one embodiment of the invention, the handpiece base is provided with a handpiece foot pad, an auxiliary wheel and a pedal structure.

In one embodiment of the invention, a plastic shield is attached to the handpiece base for shielding.

In the invention, the rowing machine is provided with a pair of water tanks, the single water tank is small in size, and the pull rope assembly is positioned between the two water tanks, so that the overall occupied space of the rowing machine head is reduced; and the water tank is vertically arranged, and the water resistance of the blade structure of the water tank which is horizontally arranged is uniform.

Drawings

Fig. 1 is a schematic structural diagram of a conventional water resistance rowing exercise machine.

Fig. 2 is a schematic structural view of the double water tank rowing machine of the present invention.

Fig. 3 is a front view of the rowing machine of fig. 2.

Fig. 4 is an exploded view of the rowing machine of fig. 2.

Fig. 5 is a schematic view showing a structure of a head of the rowing machine of fig. 2.

Fig. 6 is a schematic structural view showing a locking part and a fixing part of the rowing machine of fig. 2.

Figure 7 is a schematic view of the frame of the rowing machine of figure 2 in a collapsed position.

Fig. 8 is an exploded schematic view showing a water tank of the rowing machine of fig. 4.

Fig. 9 is a sectional view showing the water tank of fig. 8.

Fig. 10 is a schematic view showing the combination of the water tank, the rotary shaft, and the actuator of fig. 8.

Fig. 11 is a schematic view showing a structure of a rotation shaft of the water tank of fig. 8.

Fig. 12 is a schematic view showing the construction of the regulator connected to the water tank of fig. 8.

Fig. 13 is a schematic structural view illustrating a pulling force assembly of the rowing machine of fig. 4.

Fig. 14 is an exploded view of the limiting wheel and the guide wheel of the tension assembly of fig. 13.

Fig. 15 is an exploded view of the pulley and return assembly of the tension assembly of fig. 13.

Fig. 16 is a schematic structural view showing a transmission mechanism of the rowing machine of fig. 4.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 2-4, the rowing machine with two water tanks according to the first embodiment of the present invention includes a machine head 1, a machine frame 2, a pair of water tanks 3 disposed on the machine head 1, a pulling force assembly 4, and a transmission mechanism 5, wherein the machine head 1 is hinged to the machine frame 2, the machine frame 2 can be rotated upward from a working position to a vertically upward folded position, and the pair of water tanks 3 are respectively disposed at two sides of the pulling force assembly 4. For convenience of description, the handpiece 1 side is the front end.

Referring to fig. 5, the handpiece 1 includes a handpiece base 11 and a handpiece base cover 12, and the handpiece base 11 and the handpiece base cover 12 cooperate to form an accommodating space. An auxiliary wheel 112 arranged towards the front end and a head foot pad 111 arranged towards the rear end are fixed at the bottom of the head base 11, and when the machine needs to move, the machine frame 2 can be lifted slightly to move easily by virtue of the auxiliary wheel 112. The handpiece base 11 is also connected with a pedal structure 113. The foot structure 113 may be connected to foot straps to allow the user to secure both feet for easy application of force. The handpiece base 11 is connected with a plastic cover 115 for shielding the tension assembly 4 and the transmission mechanism 5.

Referring to fig. 3-4, the frame 2 includes a folding tube 21, a sliding rail fixing tube 23, a tailstock bracket 24, and a cushion 25, which are fixedly connected in sequence, the folding connector 211 is fixed at the end of the folding tube 21, the sliding rail fixing tube 23 is slidably connected to the cushion 25, and the tailstock bracket 24 is connected to an adjusting cushion 241, so as to adjust the height of the tailstock 26, and to support the frame 2 at a working position or a folding position, thereby preventing the surface of the frame 2 from being worn. The tailstock 26 is sleeved outside the tailstock support 24 and is convenient to connect.

Further, the slide rails 231 are respectively connected and fixed on two side surfaces of the slide rail fixing tube 23, the cushion 25 is connected with a cushion seat 251, and the front and the rear of the cushion seat 251 are respectively fixed with a sliding wheel 252 matched with the slide rails 231 on two sides. The two ends of the slide rail 231 are respectively provided with a limit block 232 to prevent the slide wheel 252 from separating from the slide rail 231.

Referring to fig. 6, the rowing machine further includes a locking part 6 for restricting the frame 2 from rotating to hold the frame 2 in the working position, and a fixing part 7 for fixing the frame 2 rotated to the folded position.

The lock portion 6 includes a folding pin 61 of a columnar structure and a switch 62 for driving the folding pin 61 to move. The switch 62 is fixed to the middle of the folding pin 61. The folding connector 211 has a hinge protrusion 211a, a blind mounting hole a1 for receiving the folding pin 61, and a slide groove a2 corresponding to the switch 62, the blind mounting hole a1 having a side wall communicating with the slide groove a 2.

The handpiece base 11 has a connecting part 116 extending toward the frame 2, the connecting part 116 is provided with a hinge groove 116a matching with the hinge protrusion 211a, a mounting blind hole B1 accommodating part of the folding pin 61, a slide groove B2 corresponding to the switch 62, and the side wall of the mounting blind hole B1 is communicated with the slide groove B2.

When the frame 2 is in the working position, the axis of the mounting blind hole A1 is on the same straight line with the axis of the mounting blind hole B1. The hinge protrusion 211a and the hinge groove 116a are respectively provided with corresponding hinge holes 0. The mounting blind hole A1 and the mounting blind hole B1, the sliding chute A2 and the sliding chute B2 have the same structure, the abutting surfaces are provided with guide surfaces so that the locking part 6 can slide smoothly, and the depth of the mounting blind hole A1 is deeper than that of the mounting blind hole B1. The guide surface is a chamfer or a fillet.

The fixing part 7 comprises a binding band 71 and a mounting part 72 for mounting the binding band 71, the mounting part 72 is further fixed with a rubber cushion 721 for avoiding friction between the folding tube 21 and the machine head 1, the cross section of the rubber cushion 721 is of a right trapezoid structure, an arc groove 721a abutting against the side wall of the folding tube 21 is formed in the inclined surface of the rubber cushion, so that when the rack 2 is in a folding position, an included angle α formed between the rack 2 and the machine head 1 is smaller than 90 degrees, and the stress strength of the binding band 71 is reduced.

Referring to fig. 2 and 7, when the frame 2 rotates to the working position, the driving switch 62 drives the folding pin 61 to make one end of the folding pin accommodated in the blind mounting hole a1 and the other end of the folding pin accommodated in the blind mounting hole B1, so as to limit the rotation of the frame 2. When the folding is required, the driving switch 62 drives the folding pin 61 to be completely accommodated in the mounting blind hole a1, and the frame 2 can be lifted.

Referring to fig. 8-11, a pair of water tanks 3 are identical in structure. Each water tank 3 center is vertical to be equipped with rotation axis 31, and rotation axis 31 is connected with the paddle structure 32 that is located water tank 3, and pulling force subassembly 4 passes through drive mechanism 5 and drives rotation axis 31 and rotate.

The water tank 3 comprises a water tank base 33 and a water tank upper cover 34, the water tank base 33 is hermetically connected with the water tank upper cover 34, the water tank base 33 and the water tank upper cover 34 are respectively provided with a lower pipe body 331 and an upper pipe body 341 which are used for connecting the rotating shaft 31, and the upper end and the lower end of the rotating shaft 31 are respectively hermetically and rotatably connected with the lower pipe body 331 and the upper pipe body 341.

Specifically, the rotary shaft 31 has seal grooves 310 for receiving seal rings at upper and lower ends thereof, respectively. The upper pipe body 341 is divided into a regulator receiving portion 341a, a bearing receiving portion 341b, and a seal receiving portion 341 c. The regulator receiving portion 341a, the bearing receiving portion 341b, and the seal receiving portion 341c communicate with each other in this order. A fourth bearing 35 is provided between the rotary shaft 31 and the bearing receiving portion 341 b. The seal receiving portion 341c corresponds to the seal ring groove 310.

The blade structure 32 includes a plurality of blades 321 and a blade holder 322, an insert 322a is disposed at the center of the blade holder 322, a connecting thread is disposed on the inner surface of the insert 322a, and the rotating shaft 31 and the blade structure 32 are connected and fixed through the thread. Further, the insert 322a may be a nut.

In other embodiments of the present invention, the blade fixing bracket 322 and the blade 321 may be fixed by a bolt, so as to facilitate the removal and replacement of the blade 321.

The upper cover 34 of the water tank is provided with a water filling port 341, the base 33 of the water tank is provided with a water outlet 342, and the water filling port 341 and the water outlet 342 are respectively connected with a water opening plug 343. The water tank base 33 is provided with a water tank fixing portion 332 for connecting and fixing with the machine head 1, and the machine head 1 is provided with a positioning groove 15 corresponding to the water tank fixing portion 332.

Referring to fig. 9 to 10 and 12, the water tank 3 is connected with an adjuster 8 for adjusting the rotation resistance of the rotating shaft 31, the adjuster 8 includes a torsion portion 81 exposed outside the water tank 3, a plurality of elastic claws 82 uniformly arranged around the circumference of the rotating shaft 31, and a connecting body 83 connecting the torsion portion 81 and the plurality of elastic claws 82, and the larger the gripping force of the elastic claws 82 on the rotating shaft 31 is, the larger the rotation resistance of the rotating shaft 31 is.

Specifically, the circumferential surface of the torsion part 81 has protrusions 811 uniformly arranged to increase friction, which facilitates the user to rotate the torsion part 81 to adjust the rotation resistance of the rotation shaft 31. The connecting body 83 is provided with an external thread, and the regulator receiving portion 341a is provided with an internal thread to be fitted with the external thread.

The regulator receiving portion 341a further has a tapered guide surface 341d below the female screw for guiding the free end of the elastic claw 82 to move toward the center of the water tank 3 to press the circumferential surface of the rotary shaft 31.

The adjuster 8 moves downward, the elastic claw 82 increases the pressing force on the peripheral surface of the rotating shaft 31 by the tapered guide surface 341d, and the rotation resistance received by the rotating shaft 31 increases; the actuator 8 moves upward, the elastic claws 82 reduce the pressing force to the peripheral surface of the rotary shaft 31, and the rotary resistance to the rotary shaft 31 becomes small. The external diameter of the protrusion 811 is larger than the internal diameter of the internal thread, so that the phenomenon that the rotating shaft 31 is blocked or the elastic claw 82 is broken due to overload caused by overlarge gripping force of the elastic claw 82 is avoided.

Referring to fig. 13-15, the tension assembly 4 includes a tension webbing 41, a strap wheel 42, a strap wheel shaft 43, a tension hand tube 44, a limiting wheel 45, and a guide wheel 46. The axes of the driving pulley 42, the limiting wheel 45 and the guide wheel 46 are parallel to each other. The band pulley shaft 43 is rotatably connected with a supporting seat 48 fixedly connected with the handpiece base 11.

One end of the pull braid 41 is connected with a pull handle tube 44, the other end is connected with a woven belt wheel 42 and wound on the woven belt wheel 42, and the woven belt wheel 42 is sleeved on a woven belt wheel shaft 43. A first one-way bearing 402 and a third bearing 403 are provided between the driving pulley 42 and the driving pulley shaft 43, and the third bearings 403 are respectively provided on both sides of the first one-way bearing 402. When the user pulls the pull hand tube 44 backwards, the tape wheel 42 drives the tape wheel shaft 43 to rotate; when the pulley 42 is reversed, the pulley shaft 43 is not rotated.

The two ends of the pull hand tube 44 are respectively sleeved with a hand tube sleeve 441, and the hand tube sleeve 441 is made of rubber or other flexible materials, so that the grasping comfort of a user is improved. The handpiece 1 is fixedly connected with a pull hand tube recovery buckle 16, and the pull hand tube recovery buckle 16 is provided with an arc-shaped structure 161 corresponding to the side surface of the pull hand tube 44.

The return assembly 9 for rotating the driving pulley 42 in the direction of winding the tension webbing 41 is connected to the driving pulley 42. The reset assembly 9 includes a reset coil spring 91 (not shown), a coil spring rotating shaft 92, and a coil spring box 93, wherein the reset coil spring 91 is wound around the coil spring rotating shaft 92 and is installed in the coil spring box 93, the coil spring rotating shaft 92 is fixedly connected with the driving pulley 42, and the coil spring box 93 is fixed on the supporting seat 48. When a user pulls the pull hand tube 44 backwards, the driving belt wheel 42 drives the coil spring rotating shaft 92 to rotate the reset coil spring 91 to form a contraction state; after the pulling is stopped, the return coil spring 91 is reset to drive the driving pulley 42 to rotate reversely.

The spacing wheels 45 are a pair, the tension mesh belt 41 passes through the spacing wheels 45 and the other spacing wheel 45, and the gap between the spacing wheels 45 and the other spacing wheel 45 is smaller than the width of the tension mesh belt 41, so that the tension mesh belt 41 can be prevented from being wound in an overturning manner. And simultaneously, the problem that the pull mesh belt 41 is separated from the guide wheel 46 when being pulled laterally, so that the mesh belt cannot be wound well is prevented. The limiting wheel 45 is fixed on the plastic cover 115 through the limiting wheel frame 451, the two ends of the limiting wheel 45 are respectively sleeved with the shaft sleeves 452, the limiting wheel 45 rotates smoothly to avoid excessive friction between the pulling force woven belt 41 and the limiting wheel 45, and the service life of the pulling force woven belt 41 is prolonged.

The guide wheel 46 is disposed between the restraint wheel 45 and the webbing wheel 42, and the guide wheel 46 is used for preventing the webbing wheel 42 from being reversely wound when the webbing belt 41 is wound. Two ends of the weaving wheel 42 and the guide wheel 46 are respectively provided with a limit convex ring 421 and a limit convex ring 461, and the limit convex ring 421 and the limit convex ring 461 are used for preventing the tension woven belt 41 from deviating. The position restricting collars 421 and 461 have guide surfaces 421a and 461a, which further prevent the tension webbing 41 from being displaced. The cross sections of the driving pulley 42 and the guide pulley 46 are in an I shape.

Further, the handpiece 1 is provided with a fixing pipe 17 which extends upwards and is used for fixing the guide wheel 46, the fixing pipe 17 is fixedly connected with a guide wheel fixing frame 49, the guide wheel fixing frame 49 is rotatably connected with the guide wheel 46, and the guide wheel fixing frame 49 is of a U-shaped structure.

Referring to fig. 16, the transmission mechanism 5 includes: a transmission shaft 51, a rotating shaft connecting piece 52, a primary synchronous pulley 53 and a secondary synchronous pulley 54.

The two ends of the transmission shaft 51 are respectively connected and fixed with bevel teeth A3. The rotating shaft 31 and the rotating shaft connecting piece 52 are axially connected and fixed through a clamp spring, and the rotating shaft 31 is provided with a clamp spring groove 311. The bevel gear B3 is fixedly connected with the rotating shaft connecting piece 52. A second bearing 56 is provided between the shaft connector 52 and the tank fixing portion 332. The second one-way bearing 57 is provided between the rotary shaft connector 52 and the rotary shaft 31. Cog a3 intermeshes with cog B3. The handpiece base 11 is provided with an opening 117 corresponding to the rotating shaft connecting piece 52, and the radial dimension of the opening 117 is larger than the outer diameter dimension of the rotating shaft connecting piece 52 and smaller than the outer diameter dimension of the second bearing 56.

The main synchronous pulley 54 and the auxiliary synchronous pulley 54 are respectively fixed on the transmission shaft 51 and the pulley shaft 43 of the tension assembly 4, the transmission shaft 51 is parallel to the axis of the pulley shaft 43, a user pulls the tension hand tube 44 of the tension assembly 4 to drive the pulley shaft 43 to drive the transmission shaft 51 to rotate, and the transmission shaft 51 drives the paddle structures 32 in the pair of water tanks 3 to synchronously rotate.

The transmission mechanism 5 further comprises a bearing seat 58 for fixing the transmission shaft 51, the bearing seat 58 is fixedly connected with the handpiece base 11, and a first bearing 59 is arranged between the bearing seat 58 and the transmission shaft 51. The transmission shaft 51 is accommodated in an accommodating space formed by the machine head base 11 and the machine head base cover 12.

Further, the fourth bearing 35, the third bearing 403, the second bearing 56, and the first bearing 59 are all deep groove ball bearings.

The rowing machine with double water tanks has the working principle that:

when the user takes exercise, pulling force handle pipe backward, pulling out the pulling force meshbelt of winding on the driving pulley through spacing wheel, leading wheel, driving the driving pulley and rotating, driving the transmission shaft through main and vice synchronous pulley and rotating with the driving pulley axle, the rotation axis that the transmission shaft passes through intermeshing's bevel gear A and bevel gear B drive both sides water tank drives the paddle structure rotation.

When the user loosens the pull hand tube, the pull mesh belt is also wound on the back weaving belt wheel due to the restoring elasticity of the reset coil spring. By means of the components, a user can pull the tension hand tube repeatedly to generate damping tension, and the purpose of stretching movement is achieved.

The rotation resistance of the rotating shaft can be adjusted by the adjuster to meet the exercise intensity requirements of different users.

In the invention, the rowing machine is provided with a pair of water tanks, the single water tank is small in size, and the pull rope assembly is positioned between the two water tanks, so that the overall occupied space of the rowing machine head is reduced; and the water tank is vertically arranged, and the water resistance of the blade structure of the water tank which is horizontally arranged is uniform.

In the invention, the frame in the rowing machine is hinged with the machine head, and when the rowing machine needs to be stored, a user only needs to lift the frame part, and the machine head does not need to be turned over, so that the rowing machine is labor-saving.

The rowing machine is provided with the rubber cushion block to prevent the wall of the folding pipe from being worn when the frame is at the folding position, the cross section of the rubber cushion block is of a right trapezoid structure, the inclined surface of the rubber cushion block is provided with an arc-shaped groove abutting against the side wall of the folding pipe, an included angle α formed between the rubber cushion block and the machine head is smaller than 90 degrees, and the stress strength of a binding belt is reduced.

In the invention, the rotating shafts in the two water tanks are driven to rotate by the same transmission shaft, so that whether the rotating resistance of the two rotating shafts is the same or not is judged, the rotating speeds are the same, and the balance effect is achieved.

According to the invention, the limiting wheel arranged on the tension assembly can ensure that the tension braid is wound on the braid wheel through the guide wheel without deviation, and the distance between the limiting wheel and the other limiting wheel is smaller than the width of the tension braid, so that the tension braid can be prevented from being overturned and wound.

According to the invention, the guide wheel of the tension component is arranged between the limiting wheel and the weaving belt wheel, so that the situation that the weaving belt wheel reversely rotates to wind the tension braid when the tension braid is wound on the weaving belt wheel can be avoided.

In the invention, the first one-way bearing is arranged between the driving belt wheel and the driving belt wheel shaft of the tension assembly, when a user releases the tension hand tube, the driving belt wheel is reversely rotated under the force of the reset assembly, at the moment, the driving belt wheel shaft is not driven to rotate, namely, the reset assembly can complete the winding of the tension woven belt only by the force of driving the driving belt wheel to reversely rotate, and the reset coil spring of the reset assembly can select smaller torque.

In the invention, the water resistance adjusting mechanism and the rowing machine are provided with the regulators, the rotation resistance of the rotating shaft is regulated by the regulators to control the resistance of the rowing machine, the resistance applied by pulling the tension hand tube is always the same, the balance can be kept, and the range of the regulation resistance is large.

In the invention, the rack is formed by connecting the folding pipe, the sliding rail fixing pipe and the tailstock bracket in a socket joint way, so that the rack is convenient to disassemble; the packaging transportation after the disassembly reduces the occupied space of the transportation and the transportation cost.

According to the invention, the paddle structure in the water tank is simple in structure and convenient to process and produce.

In one embodiment of the invention, the blades of the blade structure are detachably connected with the blade fixing frame, so that the replacement is convenient, and a single blade can be replaced.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims (10)

1. The utility model provides a rowing machine with two water tanks, includes aircraft nose, frame, its characterized in that, the aircraft nose with the frame is articulated to be connected, the frame can follow the operating position upwards rotatory to vertical ascending folding position, the aircraft nose includes the aircraft nose base, is fixed in a pair of water tank, pulling force subassembly and drive mechanism on this aircraft nose base, and is a pair of the water tank is located respectively pulling force subassembly's both sides, the vertical rotation axis that is equipped with in water tank center, this rotation axis are connected with and are located paddle structure in the water tank, the pulling force subassembly passes through drive mechanism drives the rotation axis rotates.

2. The rowing machine having two tanks in claim 1, wherein the tank includes a tank base and a tank upper cover, the tank base and the tank upper cover are hermetically connected, the tank base and the tank upper cover are respectively provided with a lower pipe body and an upper pipe body for connecting the rotation shaft, and the upper end and the lower end of the rotation shaft are respectively hermetically and rotatably connected to the lower pipe body and the upper pipe body.

3. The double water tank rowing machine of claim 2, wherein the rotary shaft has seal grooves for receiving seal rings at upper and lower ends thereof, respectively.

4. The rowing machine having two tanks in accordance with claim 2, wherein the tank is connected with an adjuster for adjusting a rotation resistance of the rotation shaft, the adjuster including a torsion portion exposed outside the tank, a plurality of elastic claws arranged uniformly in a circumferential direction around the rotation shaft, and a connecting body connecting the torsion portion and the plurality of elastic claws, the greater the gripping force of the elastic claws to the rotation shaft, the greater the rotation resistance of the rotation shaft.

5. The rowing machine with two water tanks as claimed in claim 1, wherein the tension assembly comprises a tension braid, a braid wheel shaft, and a tension hand tube, one end of the tension braid is connected to the tension hand tube, the other end is connected to the braid wheel and wound on the braid wheel, and the braid wheel is sleeved on the braid wheel shaft.

6. The rowing machine with two water tanks as claimed in claim 5, wherein the transmission mechanism comprises a bevel gear A, a bevel gear B, a transmission shaft, a primary synchronous pulley, and a secondary synchronous pulley, wherein the bevel gear A is fixed at both ends of the transmission shaft, the bevel gear B is connected and fixed with the rotation shaft, and the bevel gear A and the bevel gear B are engaged with each other; the main synchronous belt wheel is fixed on the wheel shaft of the weaving belt wheel, and the auxiliary synchronous belt wheel is fixed on the transmission shaft.

7. The rowing machine with dual tanks in claim 1, further comprising a locking part for restricting the rotation of the frame to maintain the frame in the working position and a fixing part for fixing the frame rotated to the folded position.

8. The rowing machine with two water tanks according to claim 1, wherein the frame comprises a folding pipe, a slide rail fixing pipe and a tailstock bracket which are fixedly connected in sequence, the folding pipe is fixed with a folding connector at the end, the slide rail fixing pipe is connected with a cushion in a sliding manner, and the tailstock bracket is connected with an adjusting foot pad.

9. The rowing machine with dual tanks in claim 1, wherein the head base is provided with a head foot pad, an auxiliary wheel, and a pedal structure.

10. The rowing machine with dual tanks in claim 1, wherein a plastic cover for shielding is attached to the head base.

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