Hanging ring height adjusting mechanism for gymnastic training

Abstract

The invention belongs to the technical field of contraction fastening, and discloses a gymnastic training lifting ring height adjusting mechanism which comprises a multi-stage contraction arm assembly, a wall frame assembly is arranged at the rear end of the multi-stage contraction arm assembly, and a plurality of lifting ring arm assemblies are arranged at the front end of the multi-stage contraction arm assembly. The first-stage telescopic arm is obliquely lifted, at the moment, the lifting ring arm assembly at the front end of the first-stage telescopic arm is lifted, and height adjustment of the lifting ring arm assembly is achieved; at the moment, the two groups of lifting ring arm assemblies on the outer walls of the second-stage telescopic arm and the third-stage telescopic arm are synchronously subjected to inclined height adjustment, and a stepped and synchronous height adjustment structure is formed among the three groups of lifting ring arm assemblies, so that the lifting ring arm assemblies with different heights can be unfolded for use; and meanwhile, stepped height difference is formed among the three groups of lifting ring arm assemblies, so that the gymnastics trainees can conveniently carry out stepped lifting ring training.

Description

Technical Field

[0001] The invention belongs to the technical field of contraction and fastening, and in particular relates to a height adjustment mechanism for a hanging ring for gymnastics training. Background Art

[0002] During gymnastics training, rings training is a relatively common gymnastics training in men's gymnastics. However, in actual use, the height of the rings is difficult to adjust, and when gymnasts need to perform step-type rings training, the conventional gymnastics training rings height adjustment mechanism is far from meeting the use needs of existing gymnasts. Therefore, it is urgent to solve the above problem. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides a height adjustment mechanism for a gymnastics training ring, which has the characteristics of convenient adjustment and use.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a height adjustment mechanism for a ring for gymnastics training, comprising a multi-stage retractable arm assembly, a wall frame assembly is arranged at the rear end of the multi-stage retractable arm assembly, and a plurality of groups of ring arm assemblies are arranged at the front end of the multi-stage retractable arm assembly, as the multi-stage retractable arm assembly is tilted upward and lifted on the wall frame assembly, the plurality of groups of ring arm assemblies form a follow-up and synchronously outward-stretched ring height adjustment structure on the multi-stage retractable arm assembly, at this time, the plurality of groups of ring arm assemblies form a stepped height adjustment structure on the multi-stage retractable arm assembly, as the multi-stage retractable arm assembly is tilted downward and dropped on the wall frame assembly, the plurality of groups of ring arm assemblies form a follow-up and synchronously retracted ring storage wall-mounted structure on the multi-stage retractable arm assembly.

[0005] In a preferred embodiment of a height adjustment mechanism for a hanging ring for gymnastics training, the multi-stage retractable arm assembly comprises a first-stage retractable arm, the inner cavity of the first-stage retractable arm is provided with a second-stage retractable arm through the limited sliding of a guide rail slot and a guide rail slider, the inner cavity of the second-stage retractable arm is provided with a third-stage retractable arm through the limited sliding of a guide rail slot and a guide rail slider, a main screw is rotatably provided inside the first-stage retractable arm through a bearing, an externally threaded tube arm is rotatably provided inside the second-stage retractable arm through a bearing and a base arm ring, a second bevel gear is fixedly provided at the rear end of the main screw, a back arm and an axle frame are fixedly provided at the rear end and the bottom end of the first-stage retractable arm respectively, a coaxial driven pulley and a first bevel gear are rotatably provided on one side of the rear end of the first-stage retractable arm through a bearing, and the driven pulley is sleeved with the main pulley through a belt; The wall frame assembly comprises a wall frame, the top and bottom of which are respectively fixedly provided with an end shaft frame and a frame mounting frame, and the bottom of which is rotatably provided with a hydraulic cylinder; The lifting ring arm assembly comprises two symmetrical lifting ring cross arms, a positioning inner screw block is slidably arranged on the lifting ring cross arms, a positioning screw rod is arranged on the top of the positioning inner screw block, and a lifting ring is arranged on the bottom of the positioning inner screw block through a cable.

[0006] In a preferred embodiment of a height adjustment mechanism for a gymnastic training ring, the three-stage retractable arm slides linearly in the two-stage retractable arm, the externally threaded tube arm in the two-stage retractable arm is sleeved in the three-stage retractable arm, and the externally threaded tube arm is threadedly connected to the three-stage retractable arm, the two-stage retractable arm slides linearly in the one-stage retractable arm, the main screw in the one-stage retractable arm is threadedly connected to the two-stage retractable arm, the main screw is sleeved in the externally threaded tube arm, the outer wall of the main screw is provided with a guide rail groove, the inner wall of the externally threaded tube arm is provided with a guide rail slider, and the main screw forms a synchronous rotation structure with the externally threaded tube arm through the guide rail slider and the guide rail groove.

[0007] In a preferred embodiment of a height adjustment mechanism for a gymnastic training ring, the driven pulley is arranged outside the primary retractable arm, the first bevel gear is arranged inside the primary retractable arm, and the first bevel gear drives the main screw to rotate by meshing with the second bevel gear.

[0008] In a preferred embodiment of a height adjustment mechanism for a gymnastics training ring, the main pulley is fixedly connected to one side of the end shaft frame through a fixed side rod, one end of the belt is sleeved on a driven pulley, the driven pulley rotates on the outer side of the rear end of the first-stage retractable arm, and the other end of the belt is sleeved on the main pulley, and the main pulley is fixedly set on the wall frame assembly.

[0009] In a preferred embodiment of a height adjustment mechanism for gymnastics training rings, the back arm at the rear end of the first-stage retractable arm is rotatably arranged on the end shaft frame, and the far end of the hydraulic cylinder is rotatably arranged on the shaft frame at the bottom of the first-stage retractable arm.

[0010] In a preferred embodiment of a height adjustment mechanism for a hanging ring for gymnastics training, a group of hanging ring arm assemblies are fixedly arranged on the side surfaces of the distal arm bodies of the first-stage retractable arm, the second-stage retractable arm and the third-stage retractable arm.

[0011] In a preferred embodiment of a height adjustment mechanism for a ring for gymnastics training, multiple groups of the ring arm assemblies follow the synchronous outward extension movement between the first-stage retractable arm, the second-stage retractable arm and the third-stage retractable arm, and at this time, the multiple groups of ring arm assemblies form a ring structure with different step heights on the multi-stage retractable arm assembly.

[0012] In a preferred embodiment of a height adjustment mechanism for a gymnastic training ring, the diameter of the main pulley is greater than the diameter of the driven pulley.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: as the multi-stage retractable arm assembly is tilted upward and lifted on the wall frame assembly, multiple groups of hoisting ring arm assemblies form a follow-up and synchronously outward-stretched hoisting ring height adjustment structure on the multi-stage retractable arm assembly. At this time, multiple groups of hoisting ring arm assemblies form a stepped height adjustment structure on the multi-stage retractable arm assembly. As the multi-stage retractable arm assembly is tilted downward on the wall frame assembly, multiple groups of hoisting ring arm assemblies form a follow-up and synchronously retracted hoisting ring storage wall-mounted structure on the multi-stage retractable arm assembly. When the height is adjusted, the first-stage retractable arm is extended by the extension of the hydraulic cylinder. When the first-stage retractable arm is tilted and lifted, the ring arm assembly at the front end of the first-stage retractable arm will be lifted to achieve a set of height adjustment of the ring arm assembly. When the first-stage retractable arm is tilted and lifted, the main pulley has a reverse traction force on the driven pulley through the belt. Through this traction force, when the first-stage retractable arm is tilted and lifted, the driven pulley rotates at the rear end of the first-stage retractable arm. At this time, the rotation direction of the driven pulley is recorded as forward rotation. At this time, when the first-stage retractable arm tilts upward, the second-stage retractable arm performs a follow-up outward movement in the first-stage retractable arm, and the third-stage retractable arm performs a follow-up outward movement in the second-stage retractable arm. The outward abduction action, that is, when the first-stage contraction arm tilts upward to drive the rear end group of hoisting ring arm assemblies to adjust the tilt height, at this time, the second-stage contraction arm and the third-stage contraction arm are synchronously abducted, and at this time, the two groups of hoisting ring arm assemblies on the outer walls of the second-stage contraction arm and the third-stage contraction arm are synchronously tilted and adjusted in height, and at this time, a stepped and synchronous height adjustment structure is formed between the three groups of hoisting ring arm assemblies, that is, the deployment and use of hoisting ring arm assemblies of different heights are realized, and at the same time, a stepped height difference is formed between the three groups of hoisting ring arm assemblies, which is convenient for gymnastics trainers to perform step hoisting ring training. When the present invention is idle, at this time, the hydraulic The cylinder drives the first-stage retractable arm to tilt downward and approach the wall for storage. At this time, the first-stage retractable arm, the second-stage retractable arm and the third-stage retractable arm will form an action opposite to the above process, that is, when the first-stage retractable arm is tilted downward for storage, the second-stage retractable arm is randomly and synchronously stored in the first-stage retractable arm, and the third-stage retractable arm is randomly and synchronously stored in the second-stage retractable arm. At this time, when the first-stage retractable arm is tilted downward for storage, multiple groups of lifting ring arm assemblies form a downward-falling and mutually close retractable storage structure between the multiple groups of lifting ring arm assemblies, which is convenient for the height reduction adjustment and retractable storage of the multiple groups of lifting ring arm assemblies when they are idle and not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A perspective view of the present invention; Figure 2 A three-dimensional diagram of another viewing angle of the present invention; Figure 3 An exploded view of the present invention; Figure 4 is a three-dimensional diagram of a multi-stage retractable arm assembly of the present invention; Figure 5An exploded view of the multi-stage retractable arm assembly of the present invention; Figure 6 is a three-dimensional diagram of a wall rack assembly of the present invention; Figure 7 It is a three-dimensional view of the lifting ring arm assembly of the present invention.

[0015] In the figure: 100, multi-stage retractable arm assembly; 101, first-stage retractable arm; 102, second-stage retractable arm; 103, third-stage retractable arm; 104, main screw; 105, first bevel gear; 106, second bevel gear; 107, driven pulley; 108, back arm; 109, main pulley; 110, belt; 111, shaft frame; 112, guide rail slide groove; 113, guide rail slider; 114, external threaded pipe arm; 115, base arm ring; 116, fixed side rod; 200, wall frame assembly; 201, wall vertical frame; 202, vertical frame mounting frame; 203, hydraulic cylinder; 204, end shaft frame; 300, lifting ring arm assembly; 301, lifting ring cross arm; 302, positioning screw; 303, positioning inner screw block; 304, cable; 305, lifting ring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-Figure 7 As shown, the present invention provides a height adjustment mechanism for a ring for gymnastics training, comprising a multi-stage retractable arm assembly 100, a wall frame assembly 200 being provided at the rear end of the multi-stage retractable arm assembly 100, and a plurality of sets of ring arm assemblies 300 being provided at the front end of the multi-stage retractable arm assembly 100. As the multi-stage retractable arm assembly 100 is tilted upward and lifted on the wall frame assembly 200, the plurality of sets of ring arm assemblies 300 form a follow-up and synchronously outward-stretched ring height adjustment structure on the multi-stage retractable arm assembly 100. At this time, the plurality of sets of ring arm assemblies 300 form a stepped height adjustment structure on the multi-stage retractable arm assembly 100. As the multi-stage retractable arm assembly 100 is tilted downward and dropped on the wall frame assembly 200, the plurality of sets of ring arm assemblies 300 form a follow-up and synchronously retracted ring storage wall-mounted structure on the multi-stage retractable arm assembly 100.

[0018] In a preferred embodiment, please refer to Figure 4 and Figure 5The multi-stage retractable arm assembly 100 includes a first-stage retractable arm 101, a second-stage retractable arm 102 is provided in the inner cavity of the first-stage retractable arm 101 through the limited sliding of the guide rail groove 112 and the guide rail slider 113, a third-stage retractable arm 103 is provided in the inner cavity of the second-stage retractable arm 102 through the limited sliding of the guide rail groove 112 and the guide rail slider 113, a main screw 104 is rotatably provided in the first-stage retractable arm 101 through the bearing, an externally threaded tube arm 114 is rotatably provided in the second-stage retractable arm 102 through the bearing and the base arm ring 115, and a second bevel gear is fixedly provided at the rear end of the main screw 104 106, the rear end and the bottom end of the first-stage contraction arm 101 are respectively fixedly provided with a back arm 108 and a shaft frame 111, and a coaxial driven pulley 107 and a first bevel gear 105 are rotatably provided on one side of the rear end of the first-stage contraction arm 101 through a bearing, and the driven pulley 107 is sleeved with the main pulley 109 through a belt 110, and the third-stage contraction arm 103 slides linearly in the second-stage contraction arm 102, and the external threaded tube arm 114 in the second-stage contraction arm 102 is sleeved in the third-stage contraction arm 103, and the external threaded tube arm 114 is threadedly connected with the third-stage contraction arm 103, and the second-stage contraction arm 102 is in a The first-stage contraction arm 101 slides linearly, the main screw 104 in the first-stage contraction arm 101 is threadedly connected with the second-stage contraction arm 102, the main screw 104 is sleeved in the external threaded tube arm 114, the outer wall of the main screw 104 is provided with a guide rail groove 112, the inner wall of the external threaded tube arm 114 is provided with a guide rail slider 113, the main screw 104 forms a synchronous rotation structure with the external threaded tube arm 114 through the guide rail slider 113 and the guide rail groove 112, the driven pulley 107 is arranged outside the first-stage contraction arm 101, the diameter of the main pulley 109 is larger than the diameter of the driven pulley 107, the first The bevel gear 105 is arranged inside the first-stage retractable arm 101. The first bevel gear 105 drives the main screw 104 to rotate by meshing with the second bevel gear 106. A group of lifting ring arm assemblies 300 are fixedly arranged on the side of the distal arm body of the first-stage retractable arm 101, the second-stage retractable arm 102 and the third-stage retractable arm 103. The multiple groups of lifting ring arm assemblies 300 follow the synchronous outward extension action between the first-stage retractable arm 101, the second-stage retractable arm 102 and the third-stage retractable arm 103. At this time, the multiple groups of lifting ring arm assemblies 300 form lifting ring structures with different step heights on the multi-stage retractable arm assembly 100.

[0019] In a preferred embodiment, please refer to Figure 6The wall frame assembly 200 includes a wall frame 201, and the top and bottom of the wall frame 201 are respectively fixedly provided with an end shaft frame 204 and a frame mounting frame 202, and a hydraulic cylinder 203 is rotatably provided at the bottom of the wall frame 201. The main pulley 109 is fixedly connected to one side of the end shaft frame 204 through a fixed side rod 116. One end of the belt 110 is sleeved on the driven pulley 107, and the driven pulley 107 rotates on the outer side of the rear end of the first-stage retractable arm 101. The other end of the belt 110 is sleeved on the main pulley 109, and the main pulley 109 is fixedly provided on the wall frame assembly 200. The back arm 108 at the rear end of the first-stage retractable arm 101 is rotatably provided on the end shaft frame 204, and the far end of the hydraulic cylinder 203 is rotatably provided on the shaft frame 111 at the bottom of the first-stage retractable arm 101.

[0020] In a preferred embodiment, please refer to Figure 7 The ring arm assembly 300 includes two symmetrical ring cross arms 301, on which a positioning inner screw block 303 is slidably arranged, a positioning screw rod 302 is arranged on the top of the positioning inner screw block 303, and a ring 305 is arranged at the bottom of the positioning inner screw block 303 through a cable 304.

[0021] The working principle of the present invention is as follows: when the present invention is used, the wall frame 201 is fixed to the wall or other training venues by tightening bolts and the frame mounting frame 202. When the height is adjusted, the hydraulic cylinder 203 is extended to achieve the tilting and lifting of the first-stage retractable arm 101. At this time, the ring arm assembly 300 at the front end of the first-stage retractable arm 101 will be lifted to achieve a set of height adjustment of the ring arm assembly 300.

[0022] On the basis above, when the first-stage retractable arm 101 drives the last set of sling arm assemblies 300 to adjust the tilt height, at this time, the first-stage retractable arm 101 tilts and rotates upward. At this time, the first-stage retractable arm 101 tilts and lifts the front-end arm body around the main pulley 109. At this time, since the main pulley 109 is fixed and the diameter of the main pulley 109 is larger than that of the driven pulley 107, when the first-stage retractable arm 101 tilts and lifts, at this time, the main pulley 109 has a reverse traction force on the driven pulley 107 through the belt 110. Through this traction force, when the first-stage retractable arm 101 tilts and lifts, at this time, the driven pulley 107 rotates at the rear end of the first-stage retractable arm 101. At this time, the rotation direction of the driven pulley 107 is recorded as forward rotation. At this time, the driven pulley 107 drives the main screw 104 to rotate through the first bevel gear 105 and the second bevel gear 106. Since the main screw 104 is threadedly connected to the second-stage retractable arm 102, when the main screw 104 rotates, the second-stage retractable arm 102 performs an outward extension action within the first-stage retractable arm 101. At the same time, when the main screw 104 rotates, the main screw 104 synchronously drives the external thread tube arm 114 within the second-stage retractable arm 102 to rotate through the guide rail slider 113 and the guide rail chute 112. Since the external thread tube arm 114 is threadedly connected to the third-stage retractable arm 103, at this time, the third-stage retractable arm 103 synchronously performs a threaded outward extension within the second-stage retractable arm 102. That is, in the present invention, when the first-stage retractable arm 101 tilts upward, at this time, the second-stage retractable arm 102 performs a follow-up outward extension action within the first-stage retractable arm 101. At this time, the third-stage retractable arm 103 performs a follow-up outward extension action within the second-stage retractable arm 102. That is, when the first-stage retractable arm 101 tilts upward to drive the last set of sling arm assemblies 300 to adjust the tilt height, at this time, through the synchronous outward extension of the second-stage retractable arm 102 and the third-stage retractable arm 103, at this time, the two sets of sling arm assemblies 300 on the outer walls of the second-stage retractable arm 102 and the third-stage retractable arm 103 synchronously adjust the tilt height. Moreover, at this time, a stepped and synchronous height adjustment structure is formed among the three sets of sling arm assemblies 300, that is, the deployment and use of the sling arm assemblies 300 at different heights are realized. At the same time, a stepped height difference is formed among the three sets of sling arm assemblies 300, which is convenient for gymnastic trainers to perform stepped ring training.

[0023] On the basis of the above, when the present invention is idle, the hydraulic cylinder 203 drives the first-stage retractable arm 101 to tilt downward and be stored close to the wall. At this time, the first-stage retractable arm 101 tilts downward. At this time, since the main pulley 109 is fixed, the main pulley 109 forms a reverse traction force on the driven pulley 107 through the belt 110. This traction force is opposite to the upward tilt of the first-stage retractable arm 101. At this time, the driven pulley 107 will rotate in the opposite direction. At this time, the first-stage retractable arm 101, the second-stage retractable arm 102 and the third-stage retractable arm 103 An action opposite to the above process will be formed, that is, when the first-level retractable arm 101 is tilted downward for storage, the second-level retractable arm 102 is randomly and synchronously stored in the first-level retractable arm 101, and the third-level retractable arm 103 is randomly and synchronously stored in the second-level retractable arm 102. At this time, when the first-level retractable arm 101 tilts downward for storage, the multiple groups of lifting ring arm assemblies 300 form a retractable storage structure that falls downward and approaches each other, which is convenient for the height reduction adjustment and retractable storage of the multiple groups of lifting ring arm assemblies 300 when they are idle.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gymnastics training ring height adjustment mechanism, comprising a multi-stage retractable arm assembly (100), characterized in that: The rear end of the multi-stage retractable arm assembly (100) is provided with a wall frame assembly (200), and the front end of the multi-stage retractable arm assembly (100) is provided with a plurality of sets of lifting ring arm assemblies (300). As the multi-stage retractable arm assembly (100) is tilted upward and lifted on the wall frame assembly (200), the plurality of sets of lifting ring arm assemblies (300) form a follow-up and synchronously outward-extending lifting ring height adjustment structure on the multi-stage retractable arm assembly (100). At this time, the plurality of sets of lifting ring arm assemblies (300) form a stepped height adjustment structure on the multi-stage retractable arm assembly (100). As the multi-stage retractable arm assembly (100) is tilted downward and dropped on the wall frame assembly (200), the plurality of sets of lifting ring arm assemblies (300) form a follow-up and synchronously retracting lifting ring storage wall-mounted structure on the multi-stage retractable arm assembly (100).

2. A gymnastics training ring height adjustment mechanism according to claim 1, characterized in that: The multi-stage retractable arm assembly (100) comprises a first-stage retractable arm (101), an inner cavity of the first-stage retractable arm (101) being provided with a second-stage retractable arm (102) through limited sliding of a guide rail slide groove (112) and a guide rail slider (113), an inner cavity of the second-stage retractable arm (102) being provided with a third-stage retractable arm (103) through limited sliding of a guide rail slide groove (112) and a guide rail slider (113), a main screw (104) being rotatably provided inside the first-stage retractable arm (101) through a bearing, and an inner cavity of the second-stage retractable arm (102) being provided with a third-stage retractable arm (103) through limited sliding of a guide rail slide groove (112) and a guide rail slider (113). An externally threaded tube arm (114) is rotatably provided through a bearing and a base arm ring (115); a second bevel gear (106) is fixedly provided at the rear end of the main screw (104); a back arm (108) and a shaft frame (111) are fixedly provided at the rear end and the bottom end of the first-stage contraction arm (101), respectively; a coaxial driven pulley (107) and a first bevel gear (105) are rotatably provided at one side of the rear end of the first-stage contraction arm (101) through a bearing; the driven pulley (107) is sleeved with the main pulley (109) through a belt (110); The wall frame assembly (200) comprises a wall frame (201), the top and bottom of the wall frame (201) are respectively fixedly provided with an end shaft frame (204) and a frame mounting frame (202), and the bottom of the wall frame (201) is rotatably provided with a hydraulic cylinder (203); The lifting ring arm assembly (300) comprises two symmetrical lifting ring cross arms (301), a positioning inner screw block (303) being slidably arranged on the lifting ring cross arms (301), a positioning screw rod (302) being arranged on the top of the positioning inner screw block (303), and a lifting ring (305) being arranged on the bottom of the positioning inner screw block (303) via a cable (304).

3. A gymnastics training ring height adjustment mechanism according to claim 2, characterized in that: The third-stage retractable arm (103) slides linearly in the second-stage retractable arm (102); the externally threaded tube arm (114) in the second-stage retractable arm (102) is sleeved in the third-stage retractable arm (103), and the externally threaded tube arm (114) is threadedly connected to the third-stage retractable arm (103); the second-stage retractable arm (102) slides linearly in the first-stage retractable arm (101); the main screw (104) in the first-stage retractable arm (101) is threadedly connected to the second-stage retractable arm (102); the main screw (104) is sleeved in the externally threaded tube arm (114); the outer wall of the main screw (104) is provided with a guide rail groove (112); the inner wall of the externally threaded tube arm (114) is provided with a guide rail slider (113); the main screw (104) forms a synchronous rotation structure with the externally threaded tube arm (114) through the guide rail slider (113) and the guide rail groove (112).

4. A gymnastics training ring height adjustment mechanism according to claim 2, characterized in that: The driven pulley (107) is arranged outside the primary retractable arm (101), the first bevel gear (105) is arranged inside the primary retractable arm (101), and the first bevel gear (105) drives the main screw (104) to rotate by meshing with the second bevel gear (106).

5. A gymnastics training ring height adjustment mechanism according to claim 2, characterized in that: The main pulley (109) is fixedly connected to one side of the end shaft frame (204) via a fixed side rod (116); one end of the belt (110) is sleeved on the driven pulley (107); the driven pulley (107) rotates outside the rear end of the primary retractable arm (101); the other end of the belt (110) is sleeved on the main pulley (109); and the main pulley (109) is fixedly arranged on the wall frame assembly (200).

6. A gymnastics training ring height adjustment mechanism according to claim 2, characterized in that: The back arm (108) at the rear end of the first-stage retractable arm (101) is rotatably mounted on an end shaft frame (204), and the far end of the hydraulic cylinder (203) is rotatably mounted on a shaft frame (111) at the bottom of the first-stage retractable arm (101).

7. A gymnastics training ring height adjustment mechanism according to claim 2, characterized in that: A set of lifting ring arm assemblies (300) are fixedly arranged on the side surfaces of the distal arm bodies of the first-stage retractable arm (101), the second-stage retractable arm (102) and the third-stage retractable arm (103).

8. A gymnastics training ring height adjustment mechanism according to claim 2, characterized in that: The multiple sets of lifting ring arm assemblies (300) follow the synchronous extension movement between the first-stage retractable arm (101), the second-stage retractable arm (102) and the third-stage retractable arm (103), and at this time, the multiple sets of lifting ring arm assemblies (300) form lifting ring structures with different step heights on the multi-stage retractable arm assembly (100).

9. A gymnastics training ring height adjustment mechanism according to claim 2, characterized in that: The diameter of the main pulley (109) is greater than the diameter of the driven pulley (107).

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