An overhead drop apparatus for a barbell apparatus

Abstract

The application belongs to the technical field of sports equipment testing, and particularly relates to a high-falling device for barbell equipment, which comprises a testing device and a landing plate. The barbell equipment is placed above the landing plate. Four end blocks are fixedly installed at the upper and lower ends of the testing device. A guide column is fixedly installed between two vertical upper end blocks. A lifting component is vertically installed in the testing device. The lifting component is guided to lift by the two guide columns. The barbell equipment is lifted outside the two guide columns. When the barbell equipment falls and bounces, lateral swing is generated. The moving direction of the horizontal moving block in the device will move one or more arc-shaped blocks in the direction, and the buffer spring connected with the arc-shaped blocks will be compressed, thereby buffering and absorbing the lateral swing generated when the barbell equipment falls and bounces. The vertical impact force generated when the barbell equipment falls and bounces is absorbed through the lifting process of the lifting component and the barbell equipment outside the two guide columns.

Description

Technical Field

[0001] This invention belongs to the field of sports equipment testing, specifically a high-altitude drop device for barbell equipment. Background Technology

[0002] Barbells are a type of sports equipment. As a general-purpose tool for strength training, competitive weightlifting, and core exercises, their large weight and high intensity of use mean that they must undergo rigorous quality verification before leaving the factory. The simplest and most effective method is the drop test, which involves dropping the barbell from a specified height and subjecting it to multiple head-on impacts with the ground. By observing the deformation, cracks, and functional degradation of the barbell, the overall structural quality can be quickly determined.

[0003] A patent document with announcement number CN214502832U discloses an automatic barbell drop test machine, including a frame, a rotating rod, and guide rods. Cylinders are laterally arranged on both the front and rear sides of the sliding plate. A sliding block is slidably connected to the lower part of each of the two guide rods. A barbell rod is laterally arranged between the front ends of the two sliding blocks. By extending the two cylinders on the sliding plate, the front ends of the cylinders support the barbell rod, and then the sliding plate drives the barbell rod to move upward. The height can be adjusted by the operator according to the testing requirements, and different heights can be tested using barbell plates of different weights.

[0004] In traditional drop tests, a lifting mechanism lifts a barbell to a height, which then falls freely under its own weight. Two guide posts guide and support the barbell throughout the lifting process, as well as during the free fall. These guide posts are typically fixed in place to facilitate the lifting mechanism's movement. When the barbell hits the ground, it experiences both vertical and horizontal impacts on the guide posts. While the fixed guide posts allow the barbell and lifting mechanism to absorb the vertical impact, the barbell's rebound upon impact causes lateral swaying. The rigid guide posts cannot avoid this swaying and are forced to withstand significant horizontal shear forces. Prolonged use and testing can lead to scratches on the guide surfaces, deformation of the posts, and even weld cracks, significantly shortening the equipment's lifespan. Furthermore, the rigid guide posts may develop bending cracks after repeated lateral impacts, severely affecting the barbell's lifting path and ultimately failing to effectively guarantee drop tests.

[0005] Therefore, the present invention provides a high-drop device for barbell equipment to solve the problems mentioned in the background art. Summary of the Invention

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a high-altitude drop device for barbell equipment, comprising a testing device and a drop floor fixedly installed on one side of the bottom of the testing device. A barbell is placed above the drop floor. Four end blocks are fixedly installed at the upper and lower ends of the testing device. Guide posts are fixedly installed between the end blocks on two vertical lines. A lifting component is installed inside the testing device. The lifting component is guided by the two guide posts to lift and lower. An inner cavity groove is opened inside the end block. A horizontal moving block is installed inside the inner cavity groove. The horizontal moving block is connected to the corresponding end of the guide post. An end face groove is opened on the side of the end block facing the guide post. Multiple spring clamping parts are installed around the outer circumference of the horizontal moving block.

[0007] The spring clamping component includes a pneumatic telescopic component fixedly installed on the inner wall of the inner cavity groove and a buffer spring. The pneumatic telescopic component is located at the center of the buffer spring, and one end of the buffer spring is connected to an arc-shaped stop block.

[0008] Preferably, the barbell equipment includes a barbell bar and barbell plates sleeved on the outer sides of both ends of the barbell bar, and fasteners are screwed onto both ends of the barbell plates.

[0009] Preferably, the testing device includes a triangular frame and a drive motor fixedly installed inside the triangular frame. The testing device also has multiple transmission gears installed inside. The output end of the drive motor is connected to one of the transmission gears. Transmission gears are installed on the outer sides of the multiple transmission gears. The two ends of the transmission gears are fixedly connected to the upper and lower sides of the lifting component.

[0010] Preferably, the lifting component is movably mounted with multiple clamping claws on the side facing the barbell equipment, and the multiple clamping claws are used to clamp the middle part of the barbell bar.

[0011] Preferably, multiple balls are movably mounted circumferentially on both the upper and lower sides of the horizontal moving block, and the multiple balls are in contact with the upper and lower inner walls of the inner cavity groove.

[0012] Preferably, the upper and lower inner walls of the inner cavity groove are provided with limiting circular grooves, and the multiple limiting circular grooves correspond to the positions of the multiple balls. The limiting circular grooves are provided with chamfered grooves in the direction of the horizontal moving block.

[0013] Preferably, when the pneumatic telescopic components extend, one of the ball bearings contacts the center of the inner wall of the corresponding limiting groove, and the center of the chamfered groove and the center of the limiting groove are on the same vertical line.

[0014] Preferably, the inner cavity groove has spring grooves and component grooves distributed around its inner circumference. The spring grooves and component grooves are connected to each other. The pneumatic telescopic component is fixedly installed inside the component groove. One end of the buffer spring is connected to the inner wall of the spring groove.

[0015] Preferably, a connecting groove is provided on the side of the inner cavity groove away from the guide post, and an air inlet pipe is fixedly installed inside the connecting groove, which is connected to an external air pump.

[0016] Preferably, a rubber ring is fixedly installed inside the end face groove, and the inner wall of the rubber ring is fixedly connected to the outer side of the guide post.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The present invention provides a drop test device for barbell equipment. The device raises the lifting component and barbell equipment outside two guide posts until they reach their highest point. Under the influence of the barbell equipment's own weight, the barbell equipment and lifting component freely fall outside the two guide posts. When the barbell bounces off the ground, it generates a lateral swing. The movement of the horizontal moving block in this device abuts one or more arc-shaped blocks in different directions, and the connected buffer spring is compressed, thus buffering and absorbing the lateral swing generated when the barbell bounces off the ground. The vertical impact force generated when the barbell bounces off the ground is absorbed by the lifting component and barbell equipment during the raising and lowering process outside the two guide posts, thereby extending the device's lifespan and allowing for drop tests on more barbell equipment.

[0019] 2. The high-drop device for barbell equipment described in this invention uses an electric drive motor to raise the lifting component and barbell equipment to the maximum height. Then, the drive motor is deactivated, and due to the weight of the barbell equipment, the barbell equipment and lifting component fall freely until they contact the floor. At this point, the transmission chain is reversed. This process, involving multiple rises and falls of the barbell equipment, completes the overall testing of the barbell equipment. During this process, the barbell plates are observed for deformation, cracks, and functional degradation, and the fasteners are checked for loosening and failure to lock the barbell plates in place.

[0020] 3. The high-drop device for barbell equipment described in this invention uses an external air pump to inject gas into the inner cavity through the air inlet pipe, compressing the gas inside the inner cavity. The gas then enters the limiting groove through the chamfered groove, thereby positioning the horizontal moving block in the middle of the vertical direction of the inner cavity. This creates a gas barrier between the ball bearing and the corresponding limiting groove, further reducing friction. At this time, the gas in the gap between the inner wall of the inner cavity and the outer side of the horizontal moving block further buffers and absorbs the lateral impact force of the barbell equipment on the guide post. When the guide post moves, the rubber ring deforms to a certain extent, preventing most of the gas from leaking out of the inner cavity. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a three-dimensional view of the entire invention;

[0023] Figure 2 This is a three-dimensional schematic diagram of the testing device in this invention;

[0024] Figure 3 This is a three-dimensional schematic diagram of the lifting block and barbell equipment in this invention;

[0025] Figure 4 This is a three-dimensional schematic diagram of the guide post and end block in this invention;

[0026] Figure 5 This is a three-dimensional schematic diagram of the end block in this invention;

[0027] Figure 6 This is a three-dimensional schematic diagram of the spring clamping component in this invention;

[0028] Figure 7 This is a three-dimensional schematic diagram of the inner cavity groove in this invention.

[0029] In the diagram: 1. Testing device; 11. Triangular frame; 12. Transmission gear; 13. Transmission chain; 14. Drive motor; 15. Lifting component; 16. Clamping claw; 2. Landing floor; 3. Barbell equipment; 31. Barbell plate; 32. Barbell bar; 33. Fastener; 4. Guide post; 5. End block; 51. Inner cavity groove; 511. Spring groove; 512. Component groove; 513. Limiting circular groove; 514. Chamfered groove; 515. Connecting groove; 516. Air inlet pipe; 52. End face groove; 521. Rubber ring; 53. Horizontal moving block; 531. Ball bearing; 54. Spring clamping component; 541. Arc-shaped stop block; 542. Buffer spring; 543. Pneumatic telescopic component. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0031] Example 1: As Figures 1-6 As shown, an embodiment of the present invention provides a high-drop device for barbell equipment, including a testing device 1 and a drop floor 2 fixedly installed on one side of the bottom of the testing device 1. A barbell equipment 3 is placed above the drop floor 2. Four end blocks 5 are fixedly installed at the upper and lower ends of the testing device 1. A guide post 4 is fixedly installed between two vertical upper end blocks 5. A lifting component 15 is installed inside the testing device 1. The lifting component 15 is lifted and lowered by the two guide posts 4. An inner cavity groove 51 is opened inside the end block 5. A horizontal moving block 53 is installed inside the inner cavity groove 51. The horizontal moving block 53 is connected to the corresponding end of the guide post 4. An end face groove 52 is opened on the side of the end block 5 facing the guide post 4. Multiple spring clamping parts 54 are installed around the outer circumference of the horizontal moving block 53.

[0032] The spring clamp 54 includes a pneumatic telescopic component 543 fixedly installed on the inner wall of the inner cavity groove 51 and a buffer spring 542. The pneumatic telescopic component 543 is located at the center of the buffer spring 542, and one end of the buffer spring 542 is connected to an arc-shaped abutment 541.

[0033] Specifically, in this device, the barbell 3 is placed above the floor 2 and can be lifted by the lifting component 15. At this time, the two guide posts 4 provide guidance and support for the lifting component 15 and the barbell 3. Through the upward-driven structure, the lifting component 15 and the barbell 3 rise outside the two guide posts 4 until they reach their highest point. At this point, the barbell 3 and the lifting component 15 are at a high position. Then, under the influence of the barbell 3's own weight, they fall freely outside the two guide posts 4 until they contact the floor 2. In conventional technology, the two guide posts 4 are fixed at this point. When the barbell falls freely and contacts the ground, it exerts vertical and horizontal forces on the two guide posts 4. The barbell and lifting mechanism are designed to absorb vertical impact forces due to the fixed installation of the two guide posts 4. However, when the barbell bounces off the ground, it will swing laterally. The guide posts 4, being rigidly fixed, cannot avoid this and are forced to bear huge horizontal shear forces. After long-term testing and use, this can lead to scratches on the guide surface, deformation of the posts, and even cracking of the welds, significantly shortening the equipment's lifespan. Furthermore, the rigid guide posts may develop bending cracks after repeated lateral swing impacts, severely affecting the barbell's path of lifting and lowering, thus failing to effectively guarantee production testing when the barbell falls from a height. In this device, the ends of the two guide posts 4 are installed inside the corresponding end blocks 5. When the lifting component 15 and the barbell equipment 3 rise, the extension of multiple pneumatic telescopic components 543 will abut against multiple arc-shaped abutment blocks 5. 41 moves towards the horizontal moving block 53 until multiple arc-shaped abutments 541 abut against the outside of the horizontal moving block 53. At this point, the ends of the two guide posts 4 are fixedly installed inside the corresponding end blocks 5. The two fixed guide posts 4 provide guidance and support for the lifting component 15 and the barbell equipment 3 to rise. When the barbell equipment 3 needs to fall under its own weight and contact the landing floor 2, the retraction of multiple pneumatic telescopic components 543 causes the pneumatic telescopic components 543 to no longer abut against the arc-shaped abutments 541. At this time, supported by the buffer spring 542, the arc-shaped abutments 541 still contact the outside of the horizontal moving block 53. When the barbell falls and bounces back after touching the ground, it will produce a lateral swing. The thickness of the inner cavity groove 51 in this device is the same as the thickness of the horizontal moving block 53, and the diameter of the inner cavity groove 51 is larger than that of the horizontal moving block 53. The diameter of block 53, i.e., the horizontal moving block 53, will move horizontally inside the inner cavity groove 51 under the action of the lateral swing impact force. At this time, the movement direction of the horizontal moving block 53 will abut against one or more arc-shaped abutment blocks 541 in one direction, and the buffer spring 542 connected to it will be compressed, thereby buffering and absorbing the lateral swing generated when the barbell hits the ground and rebounds. That is, when the barbell descends and hits the bottom, the height position of the two guide posts 4 remains unchanged but will be horizontally displaced, thereby compressing one or more buffer springs 542. The compression and recovery of the buffer springs 542 buffer and absorb the lateral swing generated when the barbell hits the ground and rebounds. The vertical impact force generated when the barbell hits the ground and rebounds will be absorbed by the lifting component 15 and the barbell equipment 3 outside the two guide posts 4 during the lifting process.This extends the lifespan of the device, allowing for drop tests on more barbell equipment 3.

[0034] like Figures 1-4 As shown, the barbell equipment 3 includes a barbell bar 32 and barbell plates 31 sleeved on the outer sides of both ends of the barbell bar 32. Fasteners 33 are also screwed onto both ends of the barbell plates 31.

[0035] The testing device 1 includes a triangular frame 11 and a drive motor 14 fixedly installed inside the triangular frame 11. Multiple transmission gears 12 are also installed inside the testing device 1. The output end of the drive motor 14 is connected to one transmission gear 12. Transmission gears 12 are installed on the outside of the multiple transmission gears 12. The two ends of the transmission gears 12 are fixedly connected to the upper and lower sides of the lifting component 15.

[0036] The lifting component 15 is movably mounted with multiple clamping claws 16 on the side facing the barbell equipment 3. The multiple clamping claws 16 are used to clamp the middle part of the barbell bar 32.

[0037] Specifically, under the action of the gripper 16, the middle part of the barbell bar 32 is gripped. Through the electric drive of the drive motor 14 and the cooperation of multiple transmission gears 12, the transmission chain 13 is driven in the forward direction. At this time, the transmission chain 13 between the two guide posts 4 rises vertically, that is, it drives the lifting component 15 and the barbell equipment 3 to rise to the highest position. Then, the drive motor 14 is no longer working. Due to the influence of the weight of the barbell equipment 3, the barbell equipment 3 and the lifting component 15 fall freely until they contact the landing floor 2. At this time, the transmission chain 13 is driven in the reverse direction. After several rises and falls of the barbell equipment 3, the overall test of the barbell equipment 3 is completed. During the test, it is observed whether the barbell plate 31 is deformed, cracked, or has lost its function, and whether the fastener 33 is loose and unable to lock the position of the barbell plate 31.

[0038] like Figures 6-7 As shown, multiple balls 531 are circumferentially distributed and movably installed on both the upper and lower sides of the horizontal moving block 53, and the multiple balls 531 are in contact with the upper and lower inner walls of the inner cavity groove 51.

[0039] Limiting grooves 513 are provided on the upper and lower inner walls of the inner cavity groove 51. Multiple limiting grooves 513 correspond to the positions of multiple balls 531. The limiting grooves 513 are provided with chamfered grooves 514 in the direction of the horizontal moving block 53.

[0040] When multiple pneumatic telescopic components 543 extend and are inlet air, a ball 531 contacts the center of the inner wall of the corresponding limiting groove 513, and the center of the chamfered groove 514 and the center of the limiting groove 513 are on the same vertical line.

[0041] The inner cavity groove 51 has spring grooves 511 and component grooves 512 distributed around its inner circumference. The spring grooves 511 and component grooves 512 are connected. The pneumatic telescopic component 543 is fixedly installed inside the component groove 512. One end of the buffer spring 542 is connected to the inner wall of the spring groove 511.

[0042] Specifically, the extension of multiple pneumatic telescopic components 543 will cause multiple circumferentially distributed arc-shaped abutments 541 to abut against the outer side of the horizontal moving block 53, thereby determining the position of the guide post 4 and the horizontal moving blocks 53 at both ends, that is, fixing the guide post 4 at this time, ensuring that it is in a vertical state, which facilitates the lifting component 15 and the barbell equipment 3 to rise. At this time, multiple balls 531 are in contact with the bottom center of the corresponding limiting circular groove 513. When the horizontal moving block 53 moves horizontally inside the inner cavity groove 51, multiple balls 531 will roll inside the corresponding limiting circular groove 513, thereby avoiding hard friction when the horizontal moving block 53 moves inside the inner cavity groove 51, turning hard friction into rolling friction, and further extending the service life of the device. One end of the buffer spring 542 is connected to the arc-shaped abutment 541, and the other end is connected to the inner wall of the spring groove 511. The buffer spring 542 is compressed between the two.

[0043] Example 2: Figure 5 and Figure 7 As shown in the first embodiment, another embodiment of the present invention is as follows: a connecting groove 515 is provided on the side of the inner cavity groove 51 away from the guide post 4, and an air inlet pipe 516 is fixedly installed inside the connecting groove 515, and the air inlet pipe 516 is connected to an external air pump.

[0044] A rubber ring 521 is fixedly installed inside the end face groove 52, and the inner wall of the rubber ring 521 is fixedly connected to the outer side of the guide post 4.

[0045] Specifically, when the lifting component 15 and the barbell equipment 3 are about to fall, the multiple pneumatic telescopic components 543 contract under the action of the air pump. Because a rubber ring 521 is provided inside the end face groove 52, the inside of the inner cavity groove 51 is equivalent to a sealed space. Gas is injected into the inside of the inner cavity groove 51 through the air inlet pipe 516 by the external air pump, so that the gas inside the inner cavity groove 51 is compressed. The gas enters the inside of the limiting circular groove 513 through the chamfered groove 514, thereby placing the horizontal moving block 53 in the middle position in the vertical direction of the inner cavity groove 51. That is, there is a gas barrier between the ball 531 and the corresponding limiting circular groove 513, which further reduces the friction. At this time, the gas in the gap space between the inner wall of the inner cavity groove 51 and the outer side of the horizontal moving block 53 will further buffer and absorb the lateral impact force of the barbell equipment 3 on the guide post 4. When the guide post 4 moves, the rubber ring 521 will deform to a certain extent, preventing most of the gas leakage inside the inner cavity groove 51.

[0046] Working Principle: In this device, the barbell 3 is placed above the floor 2 and can be lifted by the lifting component 15. The two guide posts 4 provide guidance and support for the lifting component 15 and the barbell 3 as they rise. Through the upward-driven structure, the lifting component 15 and the barbell 3 rise outside the two guide posts 4 until they reach their highest point. At this point, the barbell 3 and the lifting component 15 are at a high position. Under the influence of the barbell 3's own weight, they fall freely outside the two guide posts 4 until they contact the floor 2. In conventional technology, the two guide posts 4 are fixed at this point. When the barbell falls freely and contacts the ground, it exerts vertical and horizontal forces on the two guide posts 4. The barbell and lifting mechanism are designed to absorb vertical impact forces due to the fixed installation of the two guide posts 4. However, when the barbell bounces off the ground, it will swing laterally. The guide posts 4, being rigidly fixed, cannot avoid this and are forced to bear huge horizontal shear forces. After long-term testing and use, this can lead to scratches on the guide surface, deformation of the posts, and even cracking of the welds, significantly shortening the equipment's lifespan. Furthermore, the rigid guide posts may develop bending cracks after repeated lateral swing impacts, severely affecting the barbell's path of lifting and lowering, thus failing to effectively guarantee production testing when the barbell falls from a height. In this device, the ends of the two guide posts 4 are installed inside the corresponding end blocks 5. When the lifting component 15 and the barbell equipment 3 rise, the extension of multiple pneumatic telescopic components 543 will abut against multiple arc-shaped abutment blocks 5. 41 moves towards the horizontal moving block 53 until multiple arc-shaped abutments 541 abut against the outside of the horizontal moving block 53. At this point, the ends of the two guide posts 4 are fixedly installed inside the corresponding end blocks 5. The two fixed guide posts 4 provide guidance and support for the lifting component 15 and the barbell equipment 3 to rise. When the barbell equipment 3 needs to fall under its own weight and contact the landing floor 2, the retraction of multiple pneumatic telescopic components 543 causes the pneumatic telescopic components 543 to no longer abut against the arc-shaped abutments 541. At this time, supported by the buffer spring 542, the arc-shaped abutments 541 still contact the outside of the horizontal moving block 53. When the barbell falls and bounces back after touching the ground, it will produce a lateral swing. The thickness of the inner cavity groove 51 in this device is the same as the thickness of the horizontal moving block 53, and the diameter of the inner cavity groove 51 is larger than that of the horizontal moving block 53. The diameter of block 53, i.e., the horizontal moving block 53, will move horizontally inside the inner cavity groove 51 under the action of the lateral swing impact force. At this time, the movement direction of the horizontal moving block 53 will abut against one or more arc-shaped abutment blocks 541 in one direction, and the buffer spring 542 connected to it will be compressed, thereby buffering and absorbing the lateral swing generated when the barbell hits the ground and rebounds. That is, when the barbell descends and hits the bottom, the height position of the two guide posts 4 remains unchanged but will be horizontally displaced, thereby compressing one or more buffer springs 542. The compression and recovery of the buffer springs 542 buffer and absorb the lateral swing generated when the barbell hits the ground and rebounds. The vertical impact force generated when the barbell hits the ground and rebounds will be absorbed by the lifting component 15 and the barbell equipment 3 outside the two guide posts 4 during the lifting process.This extends the usage time of the device and allows for drop tests on more barbell equipment 3. When the lifting component 15 and the barbell equipment 3 are about to fall, the air pump causes multiple pneumatic telescopic components 543 to contract. Because a rubber ring 521 is installed inside the end face groove 52, the inner cavity groove 51 is essentially a sealed space. An external air pump injects gas into the inner cavity groove 51 through the air inlet pipe 516, compressing the gas inside. The gas then enters the limiting space through the chamfered groove 514. The ball bearing 53 is positioned inside the inner groove 513, thus placing the horizontal moving block 53 in the middle position in the vertical direction of the inner groove 51. This creates a gas barrier between the ball bearing 531 and the corresponding limiting groove 513, further reducing friction. At this time, the gas in the gap between the inner wall of the inner groove 51 and the outer side of the horizontal moving block 53 further buffers and absorbs the lateral impact force of the barbell equipment 3 on the guide post 4. When the guide post 4 moves, the rubber ring 521 deforms to a certain extent, preventing most of the gas leakage from inside the inner groove 51.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drop test device for barbell equipment, comprising a testing device (1) and a drop floor (2) fixedly installed on one side of the bottom of the testing device (1), wherein a barbell (3) is placed above the drop floor (2), four end blocks (5) are fixedly installed at the upper and lower ends of the testing device (1), and guide posts (4) are fixedly installed between the end blocks (5) on two vertical lines, and a lifting component (15) is installed inside the testing device (1) for lifting and lowering, wherein the lifting component (15) is guided by the two guide posts (4) for lifting and lowering, characterized in that: The inner cavity groove (51) is internally provided with a horizontal moving block (53), the horizontal moving block (53) is connected with the corresponding end of the guide column (4), and the end block (5) is provided with an end surface groove (52) on the side facing the guide column (4). The spring clamping piece (54) comprises a pneumatic telescopic piece (543) and a buffer spring (542) fixedly installed on the inner wall of the inner cavity groove (51), the pneumatic telescopic piece (543) is located at the center position of the buffer spring (542), and one end of the buffer spring (542) is connected with an arc-shaped abutting block (541). The upper and lower sides of the horizontal moving block (53) are circumferentially movably provided with a plurality of rolling balls (531), and the plurality of rolling balls (531) are in contact with the upper and lower inner walls of the inner cavity groove (51). The upper and lower inner walls of the inner cavity groove (51) are provided with limiting circular grooves (513), the plurality of limiting circular grooves (513) correspond to the positions of the plurality of rolling balls (531), and the limiting circular grooves (513) are provided with chamfer grooves (514) facing the horizontal moving block (53). The side of the inner cavity groove (51) away from the guide column (4) is provided with a communication groove (515), the inner part of the communication groove (515) is fixedly provided with an air inlet pipe (516), and the air inlet pipe (516) is connected with an external air pump. The inner part of the end surface groove (52) is fixedly provided with a rubber ring (521), and the inner wall of the rubber ring (521) is fixedly connected with the outer side of the guide column (4).

2. A high fall device for a barbell apparatus as claimed in claim 1, wherein: The barbell equipment (3) comprises a barbell rod (32) and barbell plates (31) sleeved on the outer sides of the two ends of the barbell rod (32), and the two ends of the barbell plates (31) are further screw-installed with fasteners (33).

3. A high fall device for a barbell apparatus as claimed in claim 1, wherein: The test device (1) comprises a triangular frame (11) and a driving motor (14) fixedly installed in the inner part of the triangular frame (11), and a plurality of transmission gears (12) are further installed in the inner part of the test device (1), the output end of the driving motor (14) is connected with one of the transmission gears (12), a plurality of transmission gears (12) are transmission-installed on the outer sides of the transmission gears (12), and the two ends of the transmission gears (12) are fixedly connected with the upper and lower sides of the lifting member (15).

4. A high fall device for a barbell apparatus as claimed in claim 2, wherein: The lifting member (15) is movably provided with a plurality of clamping claws (16) on the side facing the barbell equipment (3), and the plurality of clamping claws (16) are used for clamping the middle part of the barbell rod (32).

5. A high fall device for a barbell apparatus as defined in claim 1, wherein: When the plurality of pneumatic telescopic pieces (543) are inflated and extended, one of the rolling balls (531) is in contact with the inner wall center of the corresponding limiting circular groove (513), and the center of the chamfer groove (514) and the center of the limiting circular groove (513) are on the same vertical line.

6. A high fall device for a barbell apparatus as defined in claim 1, wherein: The inner cavity groove (51) is provided with spring grooves (511) and component grooves (512) in the inner periphery, the spring grooves (511) and the component grooves (512) are connected, the pneumatic telescopic part (543) is fixedly installed in the component groove (512), and one end of the buffer spring (542) is connected with the inner wall of the spring groove (511).

Images