CN103752000B - Two-ski slide snow training aids - Google Patents

Abstract

The invention discloses a ski trainer, belonging to the field of ski training equipment, which comprises an H-shaped base, two pedal seats are arranged above the H-shaped base, each pedal seat is provided with a pedal, and the H An H-shaped slope adjustment plate is arranged between the base and the two pedal seats. Thrust bearings used as a center for torsion exercises for both legs are respectively arranged between the pedal seats, a torsional torque transmission part is arranged between each thrust bearing and the pedal seats, and a torque loading mechanism is arranged between the torsional moment transmission part and the H-shaped gradient adjustment plate. The invention is suitable for trainers to practice ski slewing technical movements in non-snow seasons or indoors, and can enhance the special strength of the athletes' legs in slewing movements, and improve the ability to control the balance of the trunk, plinth joints, knee joints and ankle joints.

Description

ski trainer

technical field

The invention relates to a ski trainer, in particular to a ski trainer.

Background technique

At present, skiing has become more and more popular. Since most of the ski resorts are far away from urban areas, and the snow season is short in most areas of our country, there is less time for snow practice. Using ski trainers to simulate snow sliding movements has become a way to quickly improve the training level. Effective Ways.

Patent CN203196261U discloses a snow pole ski trainer, which includes a frame, a foot pedal, a left sliding belt, a right sliding belt, and a resistance device; the frame is placed on the ground, and the foot pedal is fixedly installed on the frame At the upper end, the left and right sliding belts are respectively installed on the left and right sides of the frame, and the left sliding belt and the right sliding belt are respectively installed on two pulley pulleys located at the front and rear ends of the frame. It is flush with the top of the foot plate, and the resistance device is provided with a resistance wheel, which is connected to the pulley pulley located at the rear end of the frame through a transmission belt and a transmission wheel. Although the snowball ski trainer can adjust the weight of the trainer when simulating ski training The resistance received, but it cannot provide the trainer with slewing training, and slewing technology is one of the key technologies of ski training. At present, most of the slewing skills and special strength exercises of athletes in the non-snow season use the land freehand method or the land skateboard training method, but the two methods are not close to the actual sliding action on the snow, and the loading resistance cannot be adjusted during practice. The strengthening speed of the core muscle group of the athlete is not obvious, and the strength of the upper limbs cannot be better transmitted to the lower limbs through the trunk and act on the equipment to form a better overall movement. Although there are fewer ski land simulation training devices reported in the literature to try to solve these problems, all of them have some limitations in the aspects of functional principle and structural science, so that the actual application effect is not ideal.

This shows that the prior art needs to be further improved and improved.

Contents of the invention

The present invention provides a kind of ski trainer in order to avoid the disadvantages of the above-mentioned prior art.

The technical scheme adopted in the present invention is:

The ski trainer includes an H-shaped base, two pedal seats are arranged above the H-shaped base, pedals are arranged in each pedal seat, and a H is arranged between the H-shaped base and the two pedal seats. The front end of the H-shaped slope adjustment plate is connected to the H-shaped base in rotation, and the rear end is provided with a lifting adjustment mechanism. Between the H-shaped slope adjustment plate and each pedal seat, there is a center for torsion exercises for both legs. Thrust bearings, a torsional moment transmission part is arranged between each thrust bearing and the pedal seat, and a torque loading mechanism is arranged between the torsional moment transmission part and the H-shaped gradient adjustment plate.

The torque loading mechanism includes two horizontal hydraulic cylinders arranged parallel to each other, and the two horizontal hydraulic cylinders are connected through a first series pipeline, and a first damping port regulating valve is arranged on the first series pipeline, and each horizontal hydraulic cylinder Both ends are provided with a first spherical hinge, and the two sides of the torsional moment transmission part and the upper end surface of the H-shaped slope adjustment plate are provided with a first spherical hinge seat opposite to the two ends of the above-mentioned horizontal hydraulic cylinder. The horizontal hydraulic cylinder is hinged to the torsional moment transmission part and the first spherical hinge seat of the H-shaped slope adjustment plate through the first spherical hinge.

A vertical edge angle generating mechanism is arranged between each pedal seat and the pedal, and the vertical edge angle generating mechanism includes a groove provided at the middle position of each pedal seat and rotating grooves provided on both sides of the groove. The two ends of the pedal are fixedly connected with protruding columns that can rotate in the above-mentioned rotating groove, four blind holes are opened on the groove, and concave holes corresponding to the above-mentioned four blind holes are opened on the bottom end of the pedal. Each blind hole is equipped with a compression spring, and the top of the compression spring is connected with the above-mentioned pit.

Two vertical hydraulic cylinders parallel to each other for supporting the pedal bases are arranged between each of the pedal bases and the torsional torque transmission part, and the two vertical hydraulic cylinders are connected through a second series pipeline, and a For the second damping port regulating valve, the two ends of each vertical hydraulic cylinder are provided with second spherical hinges, and the torsional moment transmission part and the bottom end surface of the pedal seat are all provided with joints opposite to the two ends of the above-mentioned vertical hydraulic cylinders. Each vertical hydraulic cylinder is hinged with the torsional moment transmission part and the second spherical hinge seat of the pedal base through a second spherical hinge.

The torsional moment transmission part includes two uprights and a bottom plate connecting the two uprights, arc-shaped guide rails are arranged on the opposite inner sides of the upper parts of each upright, and through grooves connected with the above-mentioned grooves are respectively opened on both sides of the pedal seat , the top of each column snaps into the through groove, a pin shaft is arranged in the through groove, and a roller that can roll along the above-mentioned arc-shaped guide rail is sleeved on the pin shaft.

The lifting adjustment mechanism includes a lifting adjustment screw pair. The lifting adjustment screw pair includes a lead screw and a nut that is compatible with the lead screw. The lead screw is in contact with the above-mentioned H-shaped base through a round platform arranged at its bottom. There are two lifting adjustment screw pairs, and positioning holes are respectively opened on both sides of the rear end of the H-shaped slope adjustment plate. Each lifting adjustment screw pair is respectively installed on the H-shaped slope adjustment plate through joint bearing assemblies. The joint bearing assembly includes installation The joint bearing seat in the positioning hole and the joint bearing installed in the joint bearing seat.

Each lifting adjustment screw pair is provided with a squat degree adjustment mechanism, and the squat degree adjustment mechanism includes a ski pole and a positioning ring for installing the ski pole, and the positioning ring is sleeved on the upper part of the lead screw A helical spring is welded between the ski pole and the positioning ring, and the top of the lead screw is provided with a fastening nut for limiting the positioning ring, and the fastening nut is a combined cap nut.

A shoe size adjustment mold is arranged on the pedal, and the shoe size adjustment mold is detachably connected with the pedal.

The H-shaped base includes two first side plates and a first connecting plate connecting the two first side plates, and the front ends of each first side plate are fixedly connected with two parallel mounting ear plates, each of which is installed Turning holes are opened on the ear plates, and the H-shaped slope adjustment plate includes two second side plates and a second connecting plate connecting the two second side plates, and the front ends of each second side plate are fixedly connected with The bump is provided with a through hole, and the second connecting plate is provided with a thrust bearing positioning hole.

Support ribs are provided between one side of each column and the bottom plate.

Owing to adopting above-mentioned technical scheme, the beneficial effect that the present invention obtains is:

1. The present invention is suitable for trainers to practice ski slewing technical movements in non-snow seasons or indoors. It can enhance the special strength of athletes' legs in slewing movements, and improve the ability to control the balance of the trunk, plinth joints, knee joints and ankle joints. During the high-speed skating process, the athlete controls the body posture and successfully completes the slewing action, which lays the foundation and promotes the improvement of the athlete's performance. In addition, the use of the invention can enable skiers to master the basic essentials of the skiing slewing action, and play a role in strengthening the body. effect.

2. The present invention has compact structure, convenient installation and maintenance, and low production cost. Utilizing the present invention to practice ski slalom technique can gradually change the trainer's technical movements and shorten the development time of special strength and special skills.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Figure 2 is a top view of the present invention.

Fig. 3 is a schematic structural diagram of an H-shaped base in the present invention.

Fig. 4 is a schematic structural diagram of an H-shaped slope adjustment plate in the present invention.

Fig. 5 is a schematic structural diagram of the torsional moment transmission part in the present invention.

Fig. 6 is the attitude of the trainer and the trainer in the present invention when the slope is zero.

Fig. 7 is an enlarged view of the working relationship between the pedal seat, the roller, the compression spring, the pedal and the shoe size adjustment mold in the present invention.

Fig. 8 is a hydraulic principle diagram of the damping adjustment of the horizontal hydraulic cylinder and the vertical hydraulic cylinder in the present invention.

Fig. 9 is the actual structural diagram of the horizontal hydraulic cylinder and the vertical hydraulic cylinder in the present invention.

Fig. 10 is a schematic structural view of the pedal seat in the present invention.

Fig. 11 is a schematic diagram of the assembly relationship between the pedal seat and the torsional moment transmission part in the present invention.

Fig. 12 is a schematic diagram of the installation structure of the lifting and adjusting screw pair in the present invention.

Fig. 13 is a schematic diagram of the trainer's body posture when sliding down a slope.

Fig. 14 is a schematic diagram of the body posture of the trainer during the rotation training.

Fig. 15 is a schematic diagram of the state of the pedal seat, the compression spring, the pedal and the shoe size adjustment mold in the present invention when the trainer performs rotation training.

in,

1. H-shaped base 101, first side plate 102, first connecting plate 103, mounting ear plate 104, turning hole 2, H-shaped slope adjustment plate 201, positioning hole 202, second side plate 203, second connecting plate 204, thrust bearing positioning hole 205, bump 206, through hole 3, lifting adjustment mechanism 301, lead screw 303, joint bearing seat 304, joint bearing 305, fastening nut 4, squat degree adjustment mechanism 401, snow stick 402, Positioning ring 403, coil spring 5, pedal base 501, groove 502, blind hole 503, rotating groove 504, through groove 505, roller 506, compression spring 6, pedal 601, boss 7, shoe size adjustment mold 8, reverse Torque transmission part 801, column 802, arc guide rail 803, support rib 804, bottom plate 9, vertical hydraulic cylinder 901, second series pipeline 902, second damping port regulating valve 10, torque loading mechanism 1001, horizontal hydraulic cylinder 1002, the first series pipeline 1003, the first damping port regulating valve 11, the first ball joint seat 12, the thrust bearing 13, the cylinder barrel 14, the piston rod 15, the guide sleeve 16, the seal 17, the pressure ring 18, the end cover 19. Pipe joints

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to these embodiments.

As shown in Figures 1 to 4, the ski trainer includes an H-shaped base 1, and the H-shaped base 1 includes two first side boards 101 and a first connection connecting the two first side boards 101. plate 102, the front ends of each of the first side plates 101 are fixedly connected with two parallel mounting lugs 103, and each mounting lug 103 is provided with a turning hole 104; the top of the H-shaped base 1 is provided with Two pedal bases 5, each pedal base 5 is provided with a pedal 6, the pedal 6 is provided with a shoe size adjustment mold 7, to adapt to the requirements of different trainers for the shoe size, the shoe size adjustment mold 7 and The pedal 6 is detachably connected; an H-shaped slope adjustment plate 2 is arranged between the H-shaped base 1 and the two pedal seats 5, and the H-shaped slope adjustment plate 2 includes two second side plates 202 and connects two The second connecting plate 203 of the second side plate 202, the front end of each second side plate 202 is fixedly connected with a bump 205, the bump 205 is provided with a through hole 206, and the H-shaped slope adjustment plate 2 The front end of the front end is rotatably connected with the H-shaped base 1 through the rotating shaft in the rotating hole 104 and the through hole 206, and can be opened to a certain angle; in order to solve the problem of different downhill angles that may be encountered in the practice of descending and turning, The rear end of the H-type slope adjustment plate 2 is provided with a lifting adjustment mechanism 3, and the purpose of simulating the actual skiing angle can be realized by changing the lifting height of the H-type slope adjustment plate 2 rear end; the H-type slope adjustment plate 2 and each Thrust bearings 12 used as the twisting exercise center of both legs are respectively arranged between the pedal bases 5, and a thrust bearing positioning hole 204 is provided on the second connecting plate 202. Correspondingly, a torsional moment transmission part 8 is provided between each thrust bearing 12 and the pedal seat 5 , and a torque loading mechanism 10 is provided between the torsional moment transmission part 8 and the H-shaped gradient adjustment plate 2 .

As shown in Fig. 1, Fig. 2, Fig. 6, Fig. 12 and Fig. 13, the lift adjustment mechanism 3 includes a lift adjustment screw pair, and the lift adjustment screw pair includes a lead screw 301 and a nut that is compatible with the lead screw 301. The lead screw 301 is in contact with the above-mentioned H-shaped base 1 through a round platform arranged at its bottom end. There are two lifting and adjusting screw pairs, and positioning holes 201 are respectively opened on both sides of the rear end of the H-shaped slope adjustment plate 2, each The lifting adjustment screw pair is respectively installed on the H-shaped slope adjustment plate 2 through the joint bearing assembly, and the joint bearing assembly includes the joint bearing seat 303 installed in the positioning hole 204 and the joint joint bearing seat 303 installed in the joint bearing assembly. Bearing 304, this structure has guaranteed that regardless of the adjustment range of any angle between the H-type base 1 and the H-type slope adjustment plate 2, the round table at the bottom of the screw 301 can be perpendicular to the H-type base 1; The screw pair is provided with a squat degree adjustment mechanism 4. The squat degree adjustment mechanism 4 includes a ski pole 401 and a positioning ring 402 for installing the ski pole 401. The positioning ring 402 is sleeved on the lead screw 301. The upper part of the ski pole 401 and the positioning ring 402 are welded with a coil spring 403. The setting of the coil spring 403 can enable the trainer to train different squat degrees, making the equipment training closer to the actual skiing. The top of the screw 301 A fastening nut 305 for limiting the position of the positioning ring 402 is provided, and the fastening nut 305 is a combined cap nut.

As shown in Fig. 1, Fig. 7, Fig. 10, Fig. 11, Fig. 13, Fig. 14 and Fig. 15, a vertical edge angle generating mechanism is arranged between each of the pedal seats 5 and the pedals 6, and the vertical edge angle generating mechanism It includes a groove 501 set in the middle of each pedal seat 5 and a turning groove 503 set on both sides of the groove 501, and the two ends of the pedal 6 are respectively fixed with protrusions that can rotate in the turning groove 503. Column 601, four blind holes 502 are opened on the groove 501, pits corresponding to the four blind holes 502 are opened at the bottom of the pedal 6, compression springs 506 are installed in each blind hole 502 , the top end of the compression spring 506 is connected to the above-mentioned recess. In the actual slalom skiing process, the angle of the vertical edge of the ski and the turning posture of the body will change accordingly. In order to simulate this feeling, the present invention makes the pedal 6 rotate relatively in the groove 501 of the pedal seat 5 and at the same time it is still on the pedal seat. 5 and the pedal 6 are provided with a compression spring 506, that is to say, the athlete's body center of gravity is constantly changing between the two pedals 6 during training, so that the compression spring 506 is pressed when the pedal 6 rotates around the pedal seat 5, so that the pedal 506 is pressed. A damping force is formed between 6 and the pedal base 5, so as to simulate the variation of the vertical edge angle of the skis during the practice of turning. If the spring force of the four compression springs 506 is equivalent to half of the trainer's body weight, then this mechanism can make the pedal 6 rotate more smoothly, the force transmission is more reliable, and it is closer to actual skiing.

As shown in Fig. 1, Fig. 5 and Fig. 7, the torsional moment transmission part 8 includes two columns 801 and a base plate 804 connecting the two columns 801, one side of each column 801 and the base plate 804 are provided with The supporting ribs 803 are provided with arc-shaped guide rails 802 on the opposite inner sides of the upper parts of the columns 801, and the two sides of the pedal seat 5 are respectively provided with through grooves 504 connected with the above-mentioned grooves 501, and the tops of the columns 801 snap into The through groove 504 is provided with a pin shaft inside the through groove 504, and a roller 505 that can roll along the above-mentioned arc-shaped guide rail 802 is sleeved on the pin shaft.

As shown in Figures 1 and 8, the torque loading mechanism 10 includes two horizontal hydraulic cylinders 1001 arranged parallel to each other, and the two horizontal hydraulic cylinders 1001 are connected through a first series pipeline 1002, and the first series pipeline 1002 The first damping port regulating valve 1003 is arranged on the top, the horizontal hydraulic cylinder 1001 is a plunger cylinder, and the cylinder cavity is filled with mineral oil. Both ends of each horizontal hydraulic cylinder 1001 are equipped with a first spherical hinge. The torsional moment The two sides of the transmission part 8 and the upper end surface of the H-shaped slope adjustment plate 2 are all provided with first spherical hinge seats 11 opposite to the two ends of the above-mentioned horizontal hydraulic cylinders 1001, and each horizontal hydraulic cylinder 1001 is connected to the first spherical hinge through the first spherical hinge. The torsional moment transmission part 8 is hinged with the first spherical hinge seat 11 of the H-shaped slope adjustment plate 2; the torsional moment of the legs generated by the athlete during training is driven by the through groove 504 of the pedal seat 5 to act on the horizontal hydraulic pressure. Produced by the cylinder 1001, the torsional force of the athlete makes one of the two horizontal hydraulic cylinders 1001 stretch out and the other is pressed back. Adjusting the first damping port regulating valve 1003 can change the damping between the two horizontal hydraulic cylinders 1001, so that the two horizontal hydraulic cylinders The external force suffered when the hydraulic cylinder 1001 is stretched out and pressed back changes, that is, to adjust the load resistance of the trainer during training.

As shown in Figures 1 and 8, two vertical hydraulic cylinders 9 parallel to each other for supporting the pedal bases 5 are arranged between each pedal base 5 and the torsional moment transmission part 8, and the two vertical hydraulic cylinders 9 pass through The second series pipeline 901 is connected, and the second series pipeline 901 is provided with a second damping port regulating valve 902. The vertical hydraulic cylinder 9 is a plunger cylinder, and the cylinder cavity is filled with mineral oil. Each vertical hydraulic cylinder Both ends of 9 are provided with a second spherical hinge, and the bottom surface of the torsion moment transmission part 8 and the pedal base 5 are provided with a second spherical hinge seat opposite to the two ends of the above-mentioned vertical hydraulic cylinder 9, each The vertical hydraulic cylinder 9 is hinged with the second spherical hinge seat of the torsional moment transmission part 8 and the pedal seat 5 through the second spherical hinge; with the difference in the position of the center of gravity of the athlete's body, the pedal 6 presses the pedal seat 5 to make the two vertical joints colluding with each other. The volume of the cavity of the straight hydraulic cylinder 9 changes, and when one of the vertical hydraulic cylinders is pressed down, the other must be pushed up, and the roller 505 installed on the pedal base 5 is on the arc guide rail 802 of the torsional moment transmission part 8 The rolling of the pedal base 5 produces a pitching action, which can simulate the action behavior of the trainer to raise the toes and change the center of gravity when doing a slewing motion. The second damping port regulating valve 902 adjusts the damping size of the two vertical hydraulic cylinders 9 in series to make different Trainers have this feeling of action.

As shown in Figure 9, described horizontal hydraulic cylinder 1001 and vertical hydraulic cylinder 9 all comprise cylinder barrel 13 and the piston rod 14 that is installed in described cylinder barrel 13, described cylinder barrel 13 and piston rod 14 are connected with first, The connecting ends of the second ball hinge seat are all spherical surfaces, and a guide sleeve 15 is sleeved on the outside of one end of the piston rod 14 located in the cylinder 13, and a seal is arranged between the guide sleeve 15 and the end cover 18 of the cylinder 13. 16 and pressure ring 17, one side of the cylinder 13 is provided with a pipe joint 19 for installing the first series pipeline 1002 and the second series pipeline 901.

The parts not mentioned in the present invention can be realized by adopting or referring to the prior art.

In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the It should not be construed as limiting the invention that a device or element must have a particular orientation, be constructed, and operate in a particular orientation.

In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

Although this article uses a lot of H-shaped base 1, installation ear plate 103, H-shaped slope adjustment plate 2, thrust bearing positioning hole 204, lifting adjustment structure 3, round table, joint bearing 304, squat degree adjustment mechanism 4, snow Rod 401, pedal seat 5, rotation groove 503, compression spring 506, pedal 6, shoe size adjustment mold 7, torsional torque transmission part 8, arc guide rail 802, vertical hydraulic cylinder 9, second damping port regulating valve 902, torque Loading mechanism 10, ball hinge seat 11 and other terms, but the possibility of using other terms is not excluded. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention.

It should be further explained that the specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Claims (10)

1. Two board skiing training ware, its characterized in that: including H type base, the top of H type base is provided with two pedal seats, all is provided with the footboard in each pedal seat, is provided with H type slope adjusting plate between H type base and two pedal seats, the front end and the H type base of H type slope adjusting plate rotate to be connected, the rear end is provided with lift adjustment mechanism, is provided with the thrust bearing who is used as double-legged twisting exercise center between H type slope adjusting plate and each pedal seat respectively, is provided with torsional moment transmission portion between each thrust bearing and the pedal seat, is provided with moment of torsion loading mechanism between torsional moment transmission portion and the H type slope adjusting plate.

2. The snowboarding trainer of claim 1, wherein: the torque loading mechanism comprises two horizontal hydraulic cylinders which are arranged in parallel, the two horizontal hydraulic cylinders are connected through a first series pipeline, a first damping port adjusting valve is arranged on the first series pipeline, first spherical hinges are arranged at two ends of each horizontal hydraulic cylinder, first spherical hinge seats which are opposite to two end positions of the horizontal hydraulic cylinders are arranged on two side faces of the torsion torque transmission part and the upper end face of the H-shaped gradient adjusting plate, and each horizontal hydraulic cylinder is hinged with the first spherical hinge seats of the torsion torque transmission part and the H-shaped gradient adjusting plate through the first spherical hinges.

3. The snowboarding trainer of claim 1, wherein: the pedal structure comprises a pedal seat, a pedal, a vertical edge angle generating mechanism and a driving mechanism, wherein the vertical edge angle generating mechanism is arranged between each pedal seat and the pedal and comprises a groove arranged in the middle of each pedal seat and rotating grooves arranged on two sides of the groove, two ends of the pedal are fixedly connected with protruding columns capable of rotating in the rotating grooves respectively, four blind holes are formed in the groove, pits corresponding to the four blind holes are formed in the bottom end of the pedal, compression springs are arranged in the blind holes, and the top ends of the compression springs are connected with the pits.

4. The snowboarding trainer of claim 1, wherein: two parallel vertical hydraulic cylinders for supporting the pedal seats are arranged between each pedal seat and the torsional moment transmission part, the two vertical hydraulic cylinders are connected through a second series pipeline, a second damping port adjusting valve is arranged on the second series pipeline, second spherical hinges are arranged at two ends of each vertical hydraulic cylinder, second spherical hinge seats opposite to two end positions of the vertical hydraulic cylinders are arranged on the bottom end faces of the torsional moment transmission part and the pedal seats, and each vertical hydraulic cylinder is hinged with the torsional moment transmission part and the second spherical hinge seat of the pedal seat through the second spherical hinge.

5. The snowboarding trainer of claim 3, wherein: the torsional moment transmission part comprises two stand columns and a bottom plate for connecting the two stand columns, arc guide rails are arranged on the inner sides of the upper portions of the stand columns in opposite directions, through grooves connected with the grooves are formed in the two sides of the pedal base respectively, the tops of the stand columns are clamped into the through grooves, pin shafts are arranged in the through grooves, and rolling idler wheels capable of rolling along the arc guide rails are sleeved on the pin shafts.

6. The snowboarding trainer of claim 1, wherein: the lifting adjusting mechanism comprises two lifting adjusting screw pairs, each lifting adjusting screw pair comprises a lead screw and a nut matched with the lead screw, the lead screw is in contact with the H-shaped base through a circular table arranged at the bottom end of the lead screw, positioning holes are formed in two sides of the rear end of the H-shaped gradient adjusting plate respectively, each lifting adjusting screw pair is installed on the H-shaped gradient adjusting plate through a joint bearing assembly respectively, and each joint bearing assembly comprises a joint bearing seat installed in each positioning hole and a joint bearing installed in the joint bearing seat.

7. The snowboarding trainer of claim 6, wherein: all be provided with degree adjustment mechanism of squatting on each lift adjustment screw pair, degree adjustment mechanism of squatting includes the snow cane and is used for installing the location ring of snow cane, the location ring cover is put on the upper portion of lead screw, and the welding has coil spring between snow cane and the location ring, and the top of lead screw is provided with and is used for right the location ring carries out spacing fastening nut, fastening nut is combination formula cap nut.

8. The snowboarding trainer of claim 1, wherein: the shoe size adjusting mold is arranged on the pedal and detachably connected with the pedal.

9. The snowboarding trainer of claim 1, wherein: the H-shaped base comprises two first side plates and a first connecting plate for connecting the two first side plates, the front ends of the first side plates are fixedly connected with two mounting lug plates which are parallel to each other, rotating holes are formed in the mounting lug plates, the H-shaped gradient adjusting plate comprises two second side plates and a second connecting plate for connecting the two second side plates, the front ends of the second side plates are fixedly connected with convex blocks, through holes are formed in the convex blocks, and thrust bearing positioning holes are formed in the second connecting plate.

10. The snowboarding trainer of claim 5, wherein: and a support rib plate is arranged between one side of each upright post and the bottom plate.