Damping energy consumption device for physical training

Abstract

The invention relates to the technical field of physical training equipment, and particularly discloses a damping energy consumption device for physical training, which comprises a rack, a rotating shaft I is rotationally arranged on the rack, a chain wheel I is arranged on the rotating shaft I, a rotating shaft II is rotationally arranged at the rear part of the rack, a chain wheel II is arranged on the rotating shaft II, and the chain wheel II is in transmission connection with the chain wheel I through a chain; a damper is further arranged on the rear portion of the rack and comprises a box body, a main damping mechanism and a plurality of secondary damping mechanisms, the main damping mechanism and the secondary damping mechanisms are linearly arranged in the box body, the main damping mechanism and the secondary damping mechanisms are connected through linkage mechanisms, every two adjacent secondary damping mechanisms are connected through linkage mechanisms, and the second rotating shaft is connected with the input end of the main damping mechanism. The damping device has various resistance adjusting modes, the resistance can be rapidly and greatly adjusted by adjusting the number of the secondary damping mechanisms participating in male work, the adjusting range is large, adjustment is rapid, the damping device can be used by people who cannot exercise, and the application range is wide.

Description

Technical Field

[0001] The invention relates to the technical field of sports training equipment, in particular to a damping energy dissipation device used for sports training. Background Art

[0002] As people's requirements for the scientificity and professionalism of sports training continue to increase, as well as the exploration of different training effects and training methods, the damping principle has begun to be introduced into the design of sports training equipment. In the field of fitness, it provides a new training method for ordinary fitness enthusiasts, which can help them exercise muscles more effectively, improve strength and endurance, and can also be used to improve body coordination and stability. In competitive sports, damping trainers have become one of the important tools for athletes to conduct special training and improve their competitive level. For example, in track and field, swimming, ball games and other events, athletes can use damping trainers for targeted strength training and technical movement training.

[0003] Chinese patent CN115120927B discloses a damping energy dissipation device for sports training, including a frame, a power assembly, a transmission assembly and a damping assembly, the damping assembly including a rotating shaft, a damping shell, a partition and a follower rotating plate, the rotating shaft is rotatably installed on the damping shell, and the power assembly drives the rotating shaft to reciprocate through the transmission assembly; the inner wall of the damping shell and the rotating shaft define a damping chamber filled with damping fluid, and an adjustment protrusion is provided on the inner wall of the damping shell; the middle section of the partition is fixedly installed on the rotating shaft and divides the damping chamber into two large chambers; the follower rotating plate divides each large chamber into two small chambers, and a flow limiting channel connecting the two small chambers is provided on the follower rotating plate; the rotating shaft drives the partition to rotate and drives the follower rotating plate to rotate synchronously by pushing the damping fluid to flow, until the follower rotating plate stops rotating under the restriction of the adjustment protrusion, and the partition continues to rotate so that the damping fluid in the two small chambers flows through the flow limiting channel, thereby providing resistance for the rotation of the partition and the rotating shaft.

[0004] The above technical solution has a single way of adjusting the resistance, which is to control the resistance only by adjusting the flow rate of the flow-limiting channel. It is only suitable for fine-tuning in a small range and cannot meet the demand for large-scale resistance adjustment. Summary of the invention

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A damping energy dissipation device for sports training comprises a frame, an armrest is arranged at the front of the frame, a seat cushion is arranged at the middle, a rotating shaft 1 is rotatably arranged on the frame below the seat cushion, a sprocket 1 is arranged on the rotating shaft 1, cranks are symmetrically arranged at both ends of the rotating shaft 1, and pedals are arranged on the crank, a rotating shaft 2 is rotatably arranged at the rear of the frame, a sprocket 2 is arranged on the rotating shaft 2, the sprocket 2 is connected to the sprocket 1 through a chain transmission, a damper is also arranged at the rear of the frame, the damper comprises a box body, a main damping mechanism and a plurality of secondary damping mechanisms arranged in a straight line in the box body, the main damping mechanism and the secondary damping mechanism and two adjacent secondary damping mechanisms are connected through a linkage mechanism, and the rotating shaft 2 is connected to the input end of the main damping mechanism.

[0007] Preferably, the main damping mechanism includes a driving gear 1 and a driving gear 2 which are coaxially arranged with the rotating shaft 2, and the driving gear 1 and the driving gear 2 are both incomplete gears with a tooth surface covering a semicircle, and the tooth surfaces of the driving gear 1 and the driving gear 2 are symmetrically arranged. The main damping mechanism also includes two damping units which are arranged in parallel and are respectively connected to the driving gear 1 and the driving gear 2 in transmission, and the damping unit includes a shell, a long hole is penetrated through the top of the shell, a slider 3 is movably arranged in the long hole, and a tooth plate is arranged on the top of the slider 3, an oil cylinder is arranged on one side of the shell, a piston is arranged in the oil cylinder, one end of the piston is connected to the side of the slider 3 through a connecting rod, and a permanent magnet is arranged on the other side of the slider 3, and an electromagnet is arranged at the other end of the shell, and the electromagnet is connected to the control processor, and the two cylinders are connected by pipelines.

[0008] Preferably, slide grooves are arranged in parallel on the top of the shell and on both sides of the long hole, and a plurality of sliders 1 are arranged at positions corresponding to the two slide grooves on the top of the tooth plate, and the sliders 1 slide in the slide grooves.

[0009] Preferably, the secondary damping mechanism includes a shaft sleeve, on which a drive gear three and a drive gear four are arranged, both of which are incomplete gears with a tooth surface coverage range of a semicircle, and the tooth surfaces of the drive gear three and the drive gear four are symmetrically arranged, and a damping unit is arranged under the drive gear three and the drive gear four in transmission connection, the rotating shaft two is arranged through the shaft sleeve, and a needle bearing is arranged between the rotating shaft two and the shaft sleeve.

[0010] Preferably, the driving gear three is evenly provided with a plurality of docking grooves on the side facing the main damping mechanism, and an external spline is provided on the rotating shaft two close to the driving gear three. The linkage mechanism includes a docking plate, which is meshed on the external spline, and a clamping block is provided on the side of the docking plate facing the driving gear three corresponding to the docking groove, a clamping groove is provided on the outer side of the docking plate, a shift fork is provided in the clamping groove, and the other end of the shift fork extends out of the box body and is connected to the telescopic mechanism.

[0011] Preferably, a laser rangefinder is arranged at one end of the shell where the electromagnet is arranged, the laser rangefinder points to the third setting of the slider, and the laser rangefinder is connected to the control processor.

[0012] Preferably, a valve is provided on the oil pipe.

[0013] Preferably, an incomplete gear 2 is coaxially arranged on the rotating shaft 1, and a driving frame is vertically arranged on the outside of the incomplete gear 2. Rack 1 and rack 2 with consistent specifications are respectively arranged on the upper and lower inner sides of the driving frame. When the incomplete gear 2 rotates, it continuously meshes with rack 1 and rack 2 in sequence. A slide rail 2 is arranged below the driving frame, and a plurality of sliders 2 are arranged on the outside of the bottom edge of the driving frame. The sliders 2 slide in the slide rails 2. A push rod is rotatably arranged at the middle position of the top of the driving frame, and connecting forks are arranged at both ends of the top of the driving frame. Pin hole 1 is arranged on the connecting fork, and pin hole 2 is arranged on the push rod. The push rod and the connecting fork are fixed in position by a pin shaft passing through pin hole 1 and pin hole 2, and a handle is detachably arranged at the front end of the push rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention has a plurality of ways to adjust the resistance, and the resistance can be adjusted quickly and significantly by adjusting the number of secondary damping mechanisms participating in the work. The adjustment range is large and the adjustment is rapid, which can meet the needs of people with no athletic ability and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Schematic diagram of the local structure at A in the middle; Figure 3 A schematic diagram of the connection structure of the main damping mechanism and the secondary damping mechanism of the present invention; Figure 4 for Figure 3 Schematic diagram of the local structure at B in the middle; Figure 5 It is a schematic diagram of the local structure of the second embodiment of the present invention.

[0016] In the figure: 1, frame; 2, armrest; 3, seat cushion; 4, shaft 1; 5, sprocket 1; 6, crank; 7, pedal; 8, shaft 2; 9, sprocket 2; 10, box; 11, primary damping mechanism; 12, secondary damping mechanism; 13, linkage mechanism; 14, laser rangefinder; 15, valve; 16, incomplete gear 2; 17, drive frame; 18, rack 1; 19, rack 2; 20, slide rail 2; 21, slide block 2; 22, push rod; 23, connecting fork; 24, pin hole 1; 25, pin shaft; 26, handle; 11-1, drive gear 1; 11-2, drive Gear two; 11-4, damping unit; 11-41, housing; 11-42, long hole; 11-43, slider three; 11-44, tooth plate; 11-45, cylinder; 11-46, piston; 11-47, connecting rod; 11-48, permanent magnet; 11-49, electromagnet; 11-410, slide groove; 11-411, slider one; 12-1, bushing; 12-2, driving gear three; 12-3, driving gear four; 13-1, docking plate; 13-2, block; 13-3, slot; 13-4, fork; 13-5, telescopic mechanism. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions 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 that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0020] like Figure 1-4 As shown, in this embodiment, a damping energy dissipation device for sports training includes a frame 1, an armrest 2 is provided at the front of the frame 1, a seat cushion 3 is provided in the middle, a rotating shaft 4 is rotatably provided on the frame 1 below the seat cushion 3, a sprocket 5 is provided on the rotating shaft 4, cranks 6 are symmetrically provided at both ends of the rotating shaft 4, and a pedal 7 is provided on the crank 6, a rotating shaft 8 is rotatably provided at the rear of the frame 1, a sprocket 9 is provided on the rotating shaft 8, and the sprocket 9 is connected to the sprocket 5 through a chain transmission, and a damper is also provided at the rear of the frame 1. In this embodiment, the damper includes a box body 10, a main damping mechanism 11 and two secondary damping mechanisms 12 arranged in a straight line in the box body 10, the main damping mechanism 11 and the secondary damping mechanism 12 and the two adjacent secondary damping mechanisms 12 are connected through a linkage mechanism 13, and the rotating shaft 2 8 is connected to the input end of the main damping mechanism 11.

[0021] In this embodiment, the main damping mechanism 11 includes a driving gear 11-1 and a driving gear 11-2 coaxially arranged with the rotating shaft 8, the driving gear 11-1 and the driving gear 11-2 are both incomplete gears with a tooth surface coverage range of a semicircle, and the tooth surfaces of the driving gear 11-1 and the driving gear 11-2 are symmetrically arranged, and the main damping mechanism 11 also includes two damping units 11-4 arranged in parallel and respectively connected to the driving gear 1 11-1 and the driving gear 11-2 in transmission, the damping unit 11-4 includes a shell 11-41, and a long hole 11-42 is penetrated at the top of the shell 11-41, and a sliding member is movably arranged in the long hole 11-42. Block three 11-43, a tooth plate 11-44 is provided at the top of the slider three 11-43, an oil cylinder 11-45 is provided on one side of the shell 11-41, a piston 11-46 is provided in the oil cylinder 11-45, one end of the piston 11-46 is connected to the side of the slider three 11-43 through a connecting rod 11-47, a permanent magnet 11-48 is provided on the other side of the slider three 11-43, an electromagnet 11-49 is provided at the other end of the shell 11-41, the electromagnet 11-49 is connected to the control processor, the two oil cylinders 11-45 are connected by a pipeline, and in this embodiment, the side of the permanent magnet 11-48 pointing to the electromagnet 11-49 is the N pole.

[0022] In this embodiment, slide grooves 11-410 are arranged in parallel on the top of the shell 11-41 and on both sides of the long hole 11-42, and a plurality of sliders 11-411 are arranged at the positions corresponding to the two slide grooves 11-410 on the top of the tooth plate 11-44, and the sliders 11-411 slide in the slide grooves 11-410.

[0023] In this embodiment, the secondary damping mechanism 12 includes a sleeve 12-1, on which a driving gear three 12-2 and a driving gear four 12-3 are arranged. The driving gear three 12-2 and the driving gear four 12-3 are both incomplete gears with a tooth surface coverage range of a semicircle, and the tooth surfaces of the driving gear three 12-2 and the driving gear four 12-3 are symmetrically arranged. The driving gear three 12-2 and the driving gear four 12-3 are both transmission-connectedly arranged with a damping unit 11-4 below. The rotating shaft 8 passes through the sleeve 12-1, and a needle bearing is arranged between the rotating shaft 8 and the sleeve 12-1. The driving gear three 12-2 has the same specifications as the driving gear one 11-1, and the driving gear four 12-3 has the same specifications as the driving gear two 11-2.

[0024] In this embodiment, a plurality of docking grooves 12-4 are evenly distributed on the side of the driving gear three 12-2 facing the main damping mechanism 11, and an external spline 12-5 is arranged on the rotating shaft two 8 near the driving gear three 12-2. The linkage mechanism 13 includes a docking plate 13-1, and the docking plate 13-1 is meshingly arranged on the external spline 12-5. A clamping block 13-2 is arranged on the side of the docking plate 13-1 facing the driving gear three 12-2 corresponding to the docking groove 12-4. A clamping groove 13-3 is arranged on the outer side of the docking plate 13-1, and a shift fork 13-4 is arranged in the clamping groove 13-3. The other end of the shift fork 13-4 extends out of the box body 10 and is connected with the telescopic mechanism 13-5. In this embodiment, the telescopic mechanism 13-5 is an electrically controlled telescopic rod, and the electrically controlled telescopic rod is connected to the control processor.

[0025] In this embodiment, a laser rangefinder 14 is disposed at one end of an electromagnet 11-49 disposed in the housing 11-41. The laser rangefinder 14 is disposed pointing toward the slider and is connected to a control processor.

[0026] In this embodiment, a valve 15 is provided on the oil pipe. The valve 15 is an electrically controlled valve 15 . The valve 15 is connected to a control processor.

[0027] In this embodiment, a control box is provided on the handrail 2 at the front of the frame, and a control processor is provided in the control box. Three knobs are provided on the control box, namely, a current control knob, a telescopic rod control knob and a valve 15 control knob, and the three control knobs are electrically connected to the control processor. In this embodiment, the current control knob is used to adjust the current to control the force between the electromagnet 11-49 and the permanent magnet 11-48, the telescopic rod control knob has two adjustable gears, which are used to control the number of secondary damping mechanisms 12 involved in the operation, and the valve 15 control knob is used to control the opening and closing degree of the valve 15.

[0028] The working principle and beneficial effects of the above technical solution are: When in use, the user sits on the seat 3, supports the handrails 2 with his hands, and then places his feet on the pedals on the left and right sides respectively, and starts pedaling. During the pedaling process, the crank 6 drives the shaft 1 4 to rotate, and the shaft 1 4 then drives the sprocket 1 5 to rotate, and the sprocket 1 5 drives the sprocket 2 9 to rotate through the chain, and the sprocket 2 9 drives the driving gear 1 11-1 and the driving gear 2 11-2 to rotate through the shaft 2 8, so that the driving gear 1 11-1 and the driving gear 2 11-2 are alternately meshed with their corresponding toothed plates 11-44 for transmission. When the toothed plate 11-44 on one side is driven to move by the driving gear 1 11-1 and the driving gear 2 11-2, the permanent magnet moves toward the electromagnet 11-49, and at this time, the laser rangefinder 14 will detect the distance data in real time and transmit it to the control processor, and the control processor ... The control processor analyzes the data and finds that the distance is decreasing. At this time, the control processor controls the electromagnet 11-49 on the corresponding side to point to the end with the permanent magnet as the N pole, and like poles repel each other, thereby providing resistance. During the movement of the toothed plate 11-44, the piston 11-46 is driven to move at the same time, so that the toothed plate 11-44 on the other side moves in the opposite direction. The laser rangefinder 14 on the other side will detect the distance data in real time and transmit it to the control processor. The control processor analyzes the data and finds that the distance is increasing. At this time, the control processor controls the electromagnet 11-49 on the other side to point to the end with the permanent magnet as the S pole, and different poles attract each other, thereby also providing resistance. After the meshing transmission of the toothed plate 11-44 on this side is completed, the toothed plate 11-44 on the other side starts to mesh and transmit. The working principle is the same as above and will not be repeated here, so that when the user pedals to make a circular motion, there is always resistance, thereby achieving a sports effect.

[0029] When in use, the user can use the current control knob to adjust the current size to control the force between the electromagnet 11-49 and the permanent magnet 11-48 to change the resistance size, or control the opening and closing degree of the valve 15 through the valve 15 control knob to change the resistance size. In addition, the user can also control the movement of the telescopic rod to control the contact between the docking plate 13-1 and the gear three to increase the resistance. If one secondary damping mechanism 12 is involved in the work, the resistance is directly increased to twice the original when only the main damping mechanism 11 is working. If two secondary damping mechanisms 12 are involved in the work, the resistance is directly increased to three times the original when only the main damping mechanism 11 is working.

[0030] The working principle of the secondary damping mechanism 12 is consistent with that of the primary damping mechanism 11 , and will not be described in detail herein.

[0031] Compared with the prior art, the present invention has multiple ways to adjust the resistance size, and the present invention can quickly and significantly adjust the resistance size by adjusting the number of secondary damping mechanisms 12 participating in the work. The adjustment range is large and the adjustment is rapid. It can meet the needs of people who cannot exercise and has a wide range of applications. Example

[0032] like Figure 5 As shown, on the basis of the first embodiment, in the present embodiment, an incomplete gear 2 16 is coaxially arranged on the rotating shaft 1 4, a driving frame 17 is vertically arranged on the outside of the incomplete gear 2 16, and the upper and lower inner sides of the driving frame 17 are respectively provided with a rack 18 and a rack 2 19 of the same specifications. When the incomplete gear 2 16 rotates, it is meshed with the rack 1 18 and the rack 2 19 in sequence and continuously, and a slide rail 20 is arranged below the driving frame 17, and a plurality of sliders 21 are arranged on the outside of the bottom edge of the driving frame 17. The sliders 21 slide in the slide rail 20, and a push rod 22 is rotatably arranged at the middle position of the top of the driving frame 17, and connecting forks 23 are arranged at both ends of the top of the driving frame 17, and a pin hole 1 24 is arranged on the connecting fork 23, and a pin hole 2 is arranged on the push rod 22. The push rod 22 and the connecting fork 23 are fixed in position by a pin shaft 25 passing through the pin hole 1 24 and the pin hole 2, and a handle 26 is detachably arranged at the front end of the push rod 22.

[0033] The working principle and beneficial effects of the above technical solution are: This example can also be used to exercise the hands, chest and back. When in use, the user chooses whether to sit on the front or rear side of the frame according to habit, and then adjusts the direction of the push rod 22, and after screwing the handle 26, grasps the two ends of the handle 26 with both hands to push and pull. During the reciprocating motion of the drive frame 17, the rack 18 and the rack 2 19 on the upper and lower sides thereof are alternately engaged with the incomplete gear 2 16 for transmission, thereby driving the rotating shaft 1 4 to rotate. From then on, the rest of the motion process is the same as that of the embodiment 1, and will not be repeated here.

[0034] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A damping energy dissipation device for sports training, characterized in that: The invention comprises a frame (1), wherein the front part of the frame (1) is provided with an armrest (2), the middle part of the frame (1) is provided with a seat cushion (3), a rotating shaft (4) is rotatably provided on the frame (1) below the seat cushion (3), a sprocket (5) is provided on the rotating shaft (4), cranks (6) are symmetrically provided at both ends of the rotating shaft (4), a pedal (7) is provided on the crank (6), a rotating shaft (8) is rotatably provided on the rear part of the frame (1), a sprocket (9) is provided on the rotating shaft (8), and the sprocket (9) and the sprocket (9) are connected to the sprocket. Wheel one (5) is connected via a chain drive, and a damper is also provided at the rear of the frame (1), the damper comprising a box (10), a main damping mechanism (11) and a plurality of secondary damping mechanisms (12) arranged in a straight line in the box (10), the main damping mechanism (11) and the secondary damping mechanism (12) as well as two adjacent secondary damping mechanisms (12) are connected via a linkage mechanism (13), and the rotating shaft two (8) is connected to the input end of the main damping mechanism (11).

2. A damping energy dissipation device for sports training according to claim 1, characterized in that: The main damping mechanism (11) comprises a driving gear 1 (11-1) and a driving gear 2 (11-2) which are coaxially arranged with the rotating shaft 2 (8); the driving gear 1 (11-1) and the driving gear 2 (11-2) are both incomplete gears with a tooth surface coverage range of a semicircle, and the tooth surfaces of the driving gear 1 (11-1) and the driving gear 2 (11-2) are symmetrically arranged; the main damping mechanism (11) further comprises two damping units (11-4) which are arranged in parallel and are respectively connected to the driving gear 1 (11-1) and the driving gear 2 (11-2); the damping unit (11-4) comprises a housing (11-41); a long strip hole (11-42) is provided through the top of the housing (11-41); the ... A slider three (11-43) is movably arranged in the hole (11-42), a tooth plate (11-44) is arranged at the top of the slider three (11-43), an oil cylinder (11-45) is arranged on one side inside the housing (11-41), a piston (11-46) is arranged in the oil cylinder (11-45), one end of the piston (11-46) is connected to the side of the slider three (11-43) through a connecting rod (11-47), a permanent magnet (11-48) is arranged on the other side of the slider three (11-43), an electromagnet (11-49) is arranged at the other end inside the housing (11-41), the electromagnet (11-49) is connected to a control processor, and the two oil cylinders (11-45) are connected via a pipeline.

3. A damping energy dissipation device for sports training according to claim 2, characterized in that: Slide grooves (11-410) are arranged in parallel on the top of the shell (11-41) and on both sides of the long strip hole (11-42); a plurality of slide blocks (11-411) are arranged on the top of the tooth plate (11-44) at positions corresponding to the two slide grooves (11-410); and the slide blocks (11-411) slide in the slide grooves (11-410).

4. A damping energy dissipation device for sports training according to claim 2, characterized in that: The secondary damping mechanism (12) comprises a shaft sleeve (12-1), on which a driving gear three (12-2) and a driving gear four (12-3) are arranged, the driving gear three (12-2) and the driving gear four (12-3) are both incomplete gears with a tooth surface coverage range of a semicircle, and the tooth surfaces of the driving gear three (12-2) and the driving gear four (12-3) are symmetrically arranged, and a damping unit (11-4) is arranged below the driving gear three (12-2) and the driving gear four (12-3) in transmission connection, the rotating shaft two (8) is arranged through the shaft sleeve (12-1), and a needle bearing is arranged between the rotating shaft two (8) and the shaft sleeve (12-1).

5. A damping energy dissipation device for sports training according to claim 4, characterized in that: A plurality of docking grooves (12-4) are evenly arranged on the side of the driving gear three (12-2) facing the main damping mechanism (11), and an external spline (12-5) is arranged on the rotating shaft two (8) close to the driving gear three (12-2). The linkage mechanism (13) comprises a docking plate (13-1), the docking plate (13-1) is meshingly arranged on the external spline (12-5), a clamping block (13-2) is arranged on the side of the docking plate (13-1) facing the driving gear three (12-2) corresponding to the docking groove (12-4), a clamping groove (13-3) is arranged on the outer side of the docking plate (13-1), a shift fork (13-4) is arranged in the clamping groove (13-3), and the other end of the shift fork (13-4) extends out of the box body (10) and is connected to the telescopic mechanism (13-5).

6. A damping energy dissipation device for sports training according to claim 2, characterized in that: A laser rangefinder (14) is arranged at one end of the electromagnet (11-49) arranged in the housing (11-41); the laser rangefinder (14) points to the slider three (11-43); and the laser rangefinder (14) is connected to the control processor.

7. A damping energy dissipation device for sports training according to claim 2, characterized in that , a valve (15) is provided on the oil pipe.

8. A damping energy dissipation device for sports training according to claim 1, characterized in that The rotating shaft 1 (4) is coaxially provided with an incomplete gear 2 (16), and a driving frame (17) is vertically provided outside the incomplete gear 2 (16). The upper and lower inner sides of the driving frame (17) are respectively provided with a rack 1 (18) and a rack 2 (19) of the same specification. When the incomplete gear 2 (16) rotates, it is meshed with the rack 1 (18) and the rack 2 (19) in sequence. A slide rail 2 (20) is provided below the driving frame (17), and a plurality of slide blocks are provided on the outer side of the bottom edge of the driving frame (17). The second slide rail (21) slides in the second slide rail (20), a push rod (22) is rotatably provided at the middle position of the top of the driving frame (17), connecting forks (23) are provided at both ends of the top of the driving frame (17), a pin hole 1 (24) is provided on the connecting fork (23), and a pin hole 2 is provided on the push rod (22). The push rod (22) and the connecting fork (23) are fixed in position by a pin shaft (25) passing through the pin hole 1 (24) and the pin hole 2, and a handle (26) is detachably provided at the front end of the push rod (22).

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