Movable arm strength training equipment

Abstract

The invention discloses movable arm strength training equipment, and relates to the technical field of sports equipment, the movable arm strength training equipment comprises a first training plate, a second training plate, a folding positioning assembly, an elastic reset assembly and an arm strength frame, the first training plate and the second training plate are connected through the folding positioning assembly; the folding positioning assembly has a rotating folding state and a positioning state which can be switched mutually, and rotation of the first training plate relative to the second training plate can be limited in the positioning state; symmetrical axial grooves are formed in the two sides of the first training plate, and the elastic reset assemblies are fixed in the axial grooves respectively; the arm strength frames are symmetrically fixed to the elastic reset assembly, and during training, the arm strength frames can move in the axial groove direction under stress. The arm strength training instrument can be folded and unfolded for use, is convenient to carry and small in occupied area, one set of human hands can be independently trained in an activity site, and the technical problems that an existing device is heavy in mass, cannot be moved, can only be used for training in a fixed site and cannot meet the training requirements of multiple persons at the same time are solved.

Description

Technical Field

[0001] The invention relates to the technical field of sports equipment, in particular to a movable arm strength training device, which is particularly suitable for teaching use. Background Art

[0002] Physical fitness is the use of sports to exercise the body. Sports use physical movement as the basic form of expression. Through a scientific combination of physical exercises, a certain amount and intensity of stimulation is given to various organs and systems, promoting the development of a series of adaptive reactions and optimal changes in the body's morphological structure, and thus enhancing physical fitness.

[0003] With the development of society, sports equipment has also become more diversified, especially arm training equipment. For example, patent documents with announcement numbers CN206660463U and CN218187705U disclose different arm training devices. However, after careful analysis, it is found that the existing arm training devices are heavy and are basically used in a fixed manner, which greatly occupies the training venue, not only limiting the equipment that can be accommodated in the training venue, but also making people only able to train in fixed venues. In addition, in schools, due to venue reasons, the number of arm training devices is still relatively small, which means that only a few people can perform physical training at a time. It is impossible for everyone to train at the same time like basketball and football. More people need to queue up, which greatly affects the training efficiency and cannot effectively meet the training requirements of students.

[0004] For this reason, it is necessary to develop a foldable and easy-to-carry training device to meet the purpose of multiple people training in different venues at the same time. Summary of the invention

[0005] In order to overcome the above-mentioned technical problems existing in the prior art, the present invention provides a movable arm strength training device, which can be folded and unfolded for use, is easy to carry and move, occupies a small area, and can be used by each person for individual training in an activity field, thereby solving the technical problems of the existing arm strength training device being heavy, immobile, only able to be used for training in a fixed field, and unable to meet the training requirements of multiple people at the same time.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A movable arm training device comprises a first training plate, a second training plate, a folding positioning assembly, an elastic reset assembly and an arm strength frame, wherein the first training plate is connected to the second training plate by two sets of symmetrically arranged folding positioning assemblies, the folding positioning assembly has a rotational folding state and a positioning state which can be switched with each other, in the rotational folding state, the first training plate can rotate within a range of 360° relative to the second training plate, and in the positioning state, the first training plate can be restricted from rotating relative to the second training plate; symmetrical axial grooves are provided on both sides of the first training plate, and the elastic reset assemblies are respectively fixed in the axial grooves; the arm strength frame is symmetrically fixed on the elastic reset assemblies, and can move along the axial groove direction under force during training.

[0007] The folding positioning assembly includes a connecting seat, a rotating frame and a pluggable positioning plate, the connecting seat is respectively fixed to the end of the first training board and the end of the second training board, the two ends of the rotating frame are respectively movably mounted on the connecting seat, a plurality of positioning holes are provided on the connecting seat and the rotating frame, and a plurality of positioning rods for inserting into the positioning holes are provided on the pluggable positioning plate; the folding positioning assembly switches to a positioning state after the positioning rods are simultaneously inserted into the positioning holes on the connecting seat and the rotating frame, and the folding positioning assembly switches to a rotating and folding state after the positioning rods are pulled out of the positioning holes.

[0008] A rotating shaft is fixed in the middle of the connecting seat, and the rotating frame is annular. The rotating frame is provided with symmetrical through holes, and the rotating frame is movably mounted on the rotating shaft through the through holes; a receiving groove adapted to the pluggable positioning disk is provided on the outer surface of the connecting seat, and the positioning holes are respectively provided on the bottom of the receiving groove and the outer surface of the rotating frame; the pluggable positioning disk is installed in the receiving groove by inserting the positioning rod into the positioning hole.

[0009] The rotating shaft is provided with a plug hole communicated with the accommodating groove, and a plug post for inserting into the plug hole is fixed in the middle of the pluggable positioning plate.

[0010] The elastic reset assembly includes a positioning block, a guide rod, a guide tube, a reset spring and a slider for fixing the arm force frame, the guide rod and the guide tube are respectively fixed on the slider and the positioning block, the guide rod is movably sleeved on the guide tube, the two ends of the reset spring are respectively located in the guide rod and the guide tube, the positioning block is fixed in the axial groove and is located at one end close to the second training plate, and the slider is movably arranged in the axial groove and is located at one end away from the second training plate.

[0011] The bottom of the axial groove is provided with a plurality of force adjustment grooves, and the positioning block is provided with a force adjustment block for inserting into the force adjustment groove. The force adjustment block cooperates with different force adjustment grooves to adjust the elastic force of the elastic reset component.

[0012] The arm strength frame comprises a U-shaped frame and a gripping rod. The lower end of the U-shaped frame is detachably fixed on the sliding block, and the upper end is located above the first training board and is telescopically connected to the gripping rod.

[0013] The U-shaped frame and the slider are connected by a clamping structure, which includes a clamping piece fixed to the end of the U-shaped frame and a clamping slot opened on the side of the slider, and the clamping piece includes a clamping column, a pressure block, a clamping block, a connecting rod and an elastic piece. The length of the pressure block is greater than the length of the clamping block. The pressure block is fixed to the clamping block through the connecting rod to form a linkage structure, and the linkage structure is symmetrically arranged on the clamping column, and the axis lines of the pressure block and the clamping block are both perpendicular to the axis line of the clamping column; the elastic piece is arranged between the pressure blocks, and the pressure block and the clamping block are telescopically arranged on the clamping column through the elastic piece; the U-shaped frame is fixed to the slider by the clamping block being clamped into the clamping slot.

[0014] The fixing column comprises an integrally formed connecting section and a fixing section, wherein the connecting section is fixed on the U-shaped frame, the diameter of the fixing section is smaller than the diameter of the connecting section, the pressing block is located on the connecting section, and the fixing block is located on the fixing section.

[0015] The upper end of the U-shaped frame is provided with an adjustment cavity for accommodating a holding rod, symmetrical guide grooves are provided on both sides of the adjustment cavity, and a plurality of limit holes are provided on the upper part of the adjustment cavity; a collar is detachably fixed to the end of the holding rod, and after the holding rod is inserted into the adjustment cavity, it is fixedly connected to the collar through the guide groove, and a threaded hole matching the limit hole is provided on the collar, and the threaded hole is matched with different limit holes by bolts to control the extension and retraction of the holding rod on the U-shaped frame.

[0016] The advantages of adopting the present invention are: 1. The arm strength training device provided by the present invention has a first training plate and a second training plate connected by a folding positioning assembly, so that the arm strength training device can be folded together or adjusted to a desired angle for positioning, which is convenient for movement, carrying, stacking, and reducing space occupancy, and allows students to adjust the device to different angles for arm strength training as needed. For example, when the angle between the first training plate and the second training plate is adjusted to about 180°, students can push and pull the arm strength frame for training in the form of push-ups, and when the angle between the first training plate and the second training plate is adjusted to about 90°-120°, students can pull the arm strength frame for training in a sitting position. In addition, the present invention has a simple structure, low cost and light weight, and is particularly suitable for individual training in activity venues with one set per person during teaching, and has better practicality.

[0017] 2. The present invention can perform arm strength training by pulling the arm strength rack, and the arm strength racks on both sides can be installed and disassembled, which is convenient for replacement and use.

[0018] 3. The present invention can adjust the position of the force adjustment block in different force adjustment slots as needed before training, thereby adjusting the compression force of the return spring, thereby adjusting the training intensity, which is conducive to meeting the training requirements of students with different physiques and achieving better training effects.

[0019] 4. The present invention can also adjust the length of the gripping rod during arm strength training, which is conducive to satisfying the training needs of students of different age groups and can achieve better training effects.

[0020] 5. In addition to achieving arm strength training, the present invention can also perform other training by adjusting the angle between the first training board and the second training board. For example, push-ups, sit-ups and other training can also be performed on the training board. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention in an unfolded state; Figure 2 It is a three-dimensional structural schematic diagram of the present invention in use; Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention in a folded state; Figure 4 It is a three-dimensional structural schematic diagram of the folding positioning component; Figure 5 for Figure 4 Schematic diagram of explosion structure; Figure 6 It is a schematic diagram of the three-dimensional assembly structure of the arm strength frame and the first training board; Figure 7 is a three-dimensional cross-sectional view of the elastic reset component; Figure 8 It is a schematic diagram of the three-dimensional structure of the arm frame; Fig. 9 It is a three-dimensional cross-sectional view of the clamping fixture.

[0022] Marked in the figure: 1. first training board, 11. second training board, 12. soft pad, 13. axial groove, 14. force adjustment groove, 2. folding positioning assembly, 21. positioning hole, 22. connecting seat, 23. pluggable positioning plate, 24. positioning rod, 25. plug column, 26. rotating shaft, 27. rotating frame, 3. arm force frame, 31. holding rod, 32. guide groove, 33. limiting hole, 34. collar, 35. bolt, 36. fixing column, 361. pressure block, 362. elastic member, 363. connecting rod, 364. fixing block, 4. guide rod, 41. slider, 42. positioning block, 43. guide tube, 44. return spring, 45. slot, 46. force adjustment block. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention, but are not used to limit the present invention.

[0024] like Figure 1-3As shown, the present invention provides a movable arm training device, including a first training board 1, a second training board 11, a folding and positioning assembly 2, an elastic reset assembly and an arm strength frame 3. The first training board 1 and the second training board 11 can be square boards of the same size, and the sum of the lengths of the first training board 1 and the second training board 11 is adapted to the height of the trainee. The first training board 1 and the second training board 11 are connected by two sets of symmetrically arranged folding and positioning assemblies 2, and the two sets of folding and positioning assemblies 2 are respectively located at the two ends between the first training board 1 and the second training board 11. The folding and positioning assembly 2 has a rotating folding state and a positioning state that can be switched with each other. In the rotating folding state, the first training board 1 can rotate within a range of 360° relative to the second training board 11, so that the angle between the first training board 1 and the second training board 11 can be adjusted; in the positioning state, the first training board 1 can be limited to rotate relative to the second training board 11, so that the adjusted angle can be fixed for training. Symmetrical axial grooves 13 are provided on both sides of the first training board 1, and two sets of elastic reset assemblies are respectively fixed in the two axial grooves 13. The arm strength rack 3 is composed of two and symmetrically fixed on the elastic reset assembly. During training, when the arm strength rack 3 is subjected to external force, the elastic reset assembly can be compressed and move toward the second training plate 11 along the axial groove 13, and when the arm strength rack 3 loses the external force, it can automatically reset under the reset force of the elastic reset assembly, so that arm strength training can be achieved by reciprocating.

[0025] According to a preferred embodiment of the present invention, Figure 4-5 As shown, the folding positioning assembly 2 includes a connecting seat 22, a rotating frame 27 and a pluggable positioning plate 23. The connecting seat 22 includes two seats, both of which are made of a semi-rectangular portion and a semi-circular portion of a structural member integrally formed, and a rotating shaft 26 is fixed in the middle of the two seats. The connecting seats 22 of the two sets of folding positioning assemblies 2 are respectively fixed to the end of the first training board 1 and the end of the second training board 11 by welding through the semi-rectangular portion. The two ends of the rotating frame 27 are respectively movably sleeved on the rotating shaft 26 of the connecting seat 22, and a plurality of positioning holes 21 are provided on the outer side surface of the connecting seat 22 and the outer side surface of the rotating frame 27 (the surface facing the side surfaces of the training board). The pluggable positioning plate 23 is provided with a plurality of positioning rods 24 for inserting into the positioning holes 21, and the pluggable positioning plate 23 can be inserted into the positioning hole 21 and fixed to the connecting seat 22 through the positioning rods 24. The state switching of the folding positioning assembly 2 can be achieved by inserting the pluggable positioning plate 23 into the positioning hole 21 and pulling the pluggable positioning plate 23 out of the positioning hole 21. Specifically, the folding positioning assembly 2 can be switched to the positioning state after the positioning rod 24 is simultaneously inserted into the positioning holes 21 on the connecting seat 22 and the rotating frame 27 , and the folding positioning assembly 2 can be switched to the rotating folding state after the positioning rod 24 is pulled out of the positioning hole 21 .

[0026] Further, such as Figure 4-5As shown, the rotating frame 27 is annular, and symmetrical through holes are opened on the rotating frame 27. The positioning holes 21 on the rotating frame 27 surround the through holes. The rotating frame 27 is movably sleeved on the rotating shaft 26 through the through holes. The outer surface of the connecting seat 22 is provided with a receiving groove adapted to the pluggable positioning plate 23. The positioning holes 21 on the connecting seat 22 are opened around the bottom of the receiving groove. The pluggable positioning plate 23 is installed in the receiving groove by inserting the positioning rod 24 into the positioning hole 21.

[0027] Furthermore, Figure 4-5 As shown, the rotating shaft 26 is also provided with a plug hole communicating with the receiving groove, and a plug post 25 for inserting into the plug hole is fixed in the middle of the pluggable positioning plate 23. After the pluggable positioning plate 23 is installed in the receiving groove, the plug post 25 is inserted into the plug hole. The plug post 25 cooperates with the plug hole, which can improve the stability of the pluggable positioning plate 23 installed in the receiving groove on the one hand, and improve the positioning effect on the other hand.

[0028] According to an optional embodiment of the present invention, the outer side of the connecting seat 22 is flush with the outer side of the training board, and the outer side of the pluggable positioning plate 23 does not exceed the receiving groove, so that the overall structure of the device is more standard and beautiful. In addition, in order to facilitate the plugging and unplugging control of the pluggable positioning plate 23, a protruding force-bearing part can be fixed on the outer side of the pluggable positioning plate 23.

[0029] Through the folding and positioning assembly 2, the arm strength training device can be adjusted to different angles for training. For example, when the angle between the first training board 1 and the second training board 11 is adjusted to about 180°, students can push and pull the arm strength frame 3 in the form of push-ups for training. When the angle between the first training board 1 and the second training board 11 is adjusted to about 90°-120°, students can pull the arm strength frame 3 in the form of sitting for training. In order to increase the training intensity, the angle between the first training board 1 and the second training board 11 can also be adjusted to about 210°-270°. At this time, students can pull the arm strength frame 3 on the inclined first training board 1 in the form of push-ups for training. In addition to arm strength training, the present invention can also realize other sports training by adjusting the angle between the first training board 1 and the second training board 11. For example, push-ups and sit-ups can also be performed on the training board. The function is more comprehensive and more practical. In addition, the present invention adopts the folding positioning assembly 2, so that the first training board 1 and the second training board 11 of the equipment can be folded together, which is convenient for carrying and reduces space occupation.

[0030] According to another preferred embodiment of the present invention, Figure 6-7As shown, the elastic reset assembly includes a positioning block 42, a guide rod 4, a guide tube 43, a reset spring 44 and a slider 41 for fixing the arm frame 3. The guide rod 4 and the guide tube 43 are fixed on the slider 41 and the positioning block 42 respectively. The guide rod 4 is movably mounted on the guide tube 43. The slider 41 can slide on the guide tube 43 through the guide rod 4. The two ends of the reset spring 44 are respectively located in the guide rod 4 and the guide tube 43. The positioning block 42 is fixed in the axial groove 13 and is located at one end close to the second training board 11. The slider 41 is movably arranged in the axial groove 13 and is located at one end away from the second training board 11. Since the arm frame 3 is fixed on the slider 41, when the arm frame 3 is subjected to external force and moves toward the second training board 11, the slider 41 will move toward the positioning block 42 and compress the reset block. When the arm frame 3 loses the external force, the slider 41 and the arm frame 3 will automatically reset under the reset action force of the reset spring 44, so that the arm training can be achieved by reciprocating.

[0031] According to another preferred embodiment of the present invention, Figure 6-7 As shown, a plurality of force adjustment grooves 14 are provided on the bottom of the axial groove 13 corresponding to one end of the positioning block 42. Correspondingly, a force adjustment block 46 for inserting into the force adjustment groove 14 is provided on the positioning block 42. The force adjustment block 46 can be inserted into different force adjustment grooves 14. By matching the force adjustment block 46 with different force adjustment grooves 14, the elastic force of the return spring 44 in the elastic return assembly can be adjusted, thereby adjusting the intensity of the arm strength training, so as to adapt to the training of students of different ages and different physiques.

[0032] According to another preferred embodiment of the present invention, Figure 8 As shown, the arm strength frame 3 includes a U-shaped frame and a gripping rod 31 , the lower end of the U-shaped frame is detachably fixed on the slider 41 , and the upper end of the U-shaped frame is located above the first training board 1 and is telescopically connected to the gripping rod 31 .

[0033] Further, such as Fig. 9As shown, the U-shaped frame and the slider 41 are connected by a clamping structure, which includes a clamping piece fixed at the end of the U-shaped frame, and the clamping piece includes a clamping column 36, a pressure block 361, a clamping block 364, a connecting rod 363 and an elastic member 362. The clamping column 36, the pressure block 361 and the clamping block 364 are all cylindrical structures, and a limiting cavity is provided inside the clamping column 36. The length of the pressure block 361 is greater than the length of the clamping block 364. The pressure block 361 is fixed to the clamping block 364 through the connecting rod 363 to form a linkage structure. There are two sets of linkage structures, and the two sets of linkage structures are symmetrically arranged on the clamping column 36 through the limiting cavity, and the axis center line of the pressure block 361 and the axis center line of the clamping block 364 are both perpendicular to the axis center line of the clamping column 36. The elastic member 362 is a spring and is disposed between the pressing block 361. Under the action of the elastic member 362, the pressing block 361 and the clamping block 364 are telescopically disposed on the clamping column 36, and the ends of the pressing block 361 and the clamping block 364 both extend out of the clamping column 36. When the pressing block 361 is pressed, the clamping block 364 fixed to the pressing block 361 by the connecting rod 363 will be retracted into the clamping column 36. When the pressing block 361 is released, the clamping block 364 will automatically extend out of the clamping column 36 under the action of the elastic member 362.

[0034] In addition, if Figure 7 As shown, the clamping structure also includes a clamping slot 45 provided on the side of the slider 41, a clamping hole adapted to the clamping column 36 is provided on the wall of the clamping slot 45, the inner diameter of the clamping slot 45 is adapted to the outer diameter of the end of the clamping column 36, and the inner diameter of the clamping hole is adapted to the outer diameter of the clamping block 364. In actual use, the pressing block 361 is first pressed to retract the clamping block 364 into the clamping column 36, and then the clamping column 36 is inserted into the clamping slot 45, and then the pressing block 361 is released to extend the clamping block 364 into the clamping hole to fix the U-shaped frame to the slider 41. Conversely, the pressing block 361 is pressed to retract the clamping block 364 into the clamping column 36, and then the U-shaped frame is pulled out to achieve rapid disassembly of the U-shaped frame and the slider 41.

[0035] Furthermore, Figure 8 As shown, the clamping column 36 includes an integrally formed connecting section and a clamping section, the connecting section is welded and fixed on the U-shaped frame, the diameter of the clamping section is smaller than the diameter of the connecting section, the pressing block 361 is located on the connecting section, and the clamping block 364 is located on the clamping section. The connection stability and reliability between the U-shaped frame and the slider 41 can be improved.

[0036] According to another preferred embodiment of the present invention, Figure 8As shown, the upper end of the U-shaped frame is provided with an adjustment cavity for accommodating the gripping rod 31, symmetrical guide grooves 32 are provided on both sides of the adjustment cavity, and a plurality of limit holes 33 are provided on the upper part of the adjustment cavity. A collar 34 is detachably fixed to the end of the gripping rod 31, for example, the collar 34 and the gripping rod 31 can be fixed by bolts 35. After the gripping rod 31 is inserted into the adjustment cavity, it is fixedly connected to the collar 34 through the guide groove 32, and the collar 34 is provided with threaded holes matched with the limit holes 33. The threaded holes are matched with different limit holes 33 by bolts 35 to control the extension and retraction of the gripping rod 31 on the U-shaped frame, so that the length of the gripping rod 31 on the U-shaped frame can be adjusted, thereby meeting the training needs of students of different age groups and achieving better training effects.

[0037] According to an optional embodiment of the present invention, Figure 1-3 As shown, in order to improve the comfort of training, soft pads 12 may be provided on the first training board 1 and the second training board 11 .

[0038] It should be noted that the main structure of the present invention can be made of aluminum alloy, so that the device has high structural strength and light weight at the same time. It is especially suitable for individual training in activity venues in teaching, and has better practicality.

[0039] The implementation principle of the present invention is: like Figure 1 As shown, when push-up-style arm strength training is required, the first training board 1 and the second training board 11 can be unfolded to 180°, and the arm strength frame 3 can be pulled on the soft cushion 12 to perform training in a push-up manner.

[0040] like Figure 2 As shown, when arm strength training is required in a sitting position, the second training board 11 can be lifted upward to drive one end of the rotating frame 27 to rotate along the rotating shaft 26. According to the needs, the inclination angle of the second training board 11 is adjusted to 90°-120° to form a backrest, and then the second training board 11 is fixed by inserting the pluggable positioning plate 23 into the positioning hole 21.

[0041] like Figure 3 As shown, when the use is finished and needs to be placed, first pull out the pluggable positioning plate 23, release the limit between the first training board 1 and the second training board 11, and fold the first training board 1 and the second training board 11 along the rotating frame 27 to reduce the occupied space and facilitate placement and carrying.

[0042] like Figure 1-3As shown in 6-7, during training, the arm strength frame 3 can be pulled along the axial groove 13 to drive the guide rod 4 to slide along the guide tube 43, squeeze the internal return spring 44, and pull it back to achieve the training effect. When it is necessary to adjust the training intensity, the strength adjustment block 46 can be pulled outward first to disengage from the strength adjustment groove 14, release the limit on the positioning block 42, and then move the position of the positioning block 42 toward the slider 41, drive the guide tube 43 to slide, squeeze the return spring 44, reduce the initial length of the return spring 44, increase the compression force, and then insert the strength adjustment block 46 into the corresponding strength adjustment groove 14, limit and fix the strength adjustment block 46, so as to achieve the adjustment of the training intensity.

[0043] The above description is only a specific implementation mode of the present invention. Any feature disclosed in this specification, unless otherwise stated, can be replaced by other alternative features that are equivalent or have similar purposes; all the disclosed features, or all the steps in the methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

Claims

1. A movable arm strength training device, characterized in that: The invention comprises a first training plate (1), a second training plate (11), a folding and positioning assembly (2), an elastic reset assembly and an arm strength frame (3); the first training plate (1) and the second training plate (11) are connected via two sets of symmetrically arranged folding and positioning assemblies (2); the folding and positioning assemblies (2) have a rotational folding state and a positioning state that can be switched with each other; in the rotational folding state, the first training plate (1) can rotate within a range of 360° relative to the second training plate (11); in the positioning state, the first training plate (1) can be restricted from rotating relative to the second training plate (11); symmetrical axial grooves (13) are provided on both sides of the first training plate (1), and the elastic reset assemblies are respectively fixed in the axial grooves (13); the arm strength frame (3) is symmetrically fixed on the elastic reset assemblies; during training, the arm strength frame (3) can be moved along the direction of the axial grooves (13) under force.

2. A movable arm strength training device according to claim 1, characterized in that: The folding positioning assembly (2) comprises a connecting seat (22), a rotating frame (27) and a pluggable positioning plate (23); the connecting seat (22) is respectively fixed to the end of the first training board (1) and the end of the second training board (11); the two ends of the rotating frame (27) are respectively movably mounted on the connecting seat (22); a plurality of positioning holes (21) are provided on the connecting seat (22) and the rotating frame (27); and a plurality of positioning rods (24) for inserting into the positioning holes (21) are provided on the pluggable positioning plate (23); the folding positioning assembly (2) is switched to a positioning state after the positioning rods (24) are simultaneously inserted into the positioning holes (21) on the connecting seat (22) and the rotating frame (27); and the folding positioning assembly (2) is switched to a rotating folding state after the positioning rods (24) are pulled out of the positioning holes (21).

3. A movable arm strength training device according to claim 2, characterized in that: A rotating shaft (26) is fixed in the middle of the connecting seat (22); the rotating frame (27) is annular and has symmetrical through holes. The rotating frame (27) is movably mounted on the rotating shaft (26) through the through holes. A receiving groove matching the pluggable positioning plate (23) is formed on the outer surface of the connecting seat (22); the positioning holes (21) are respectively formed on the bottom of the receiving groove and the outer surface of the rotating frame (27); the pluggable positioning plate (23) is installed in the receiving groove by inserting the positioning rod (24) into the positioning hole (21).

4. A movable arm strength training device according to claim 3, characterized in that: The rotating shaft (26) is provided with an insertion hole which is in communication with the receiving groove, and a plugging post (25) for inserting into the insertion hole is fixed in the middle of the pluggable positioning plate (23).

5. A movable arm strength training device according to any one of claims 1 to 4, characterized in that: The elastic reset assembly comprises a positioning block (42), a guide rod (4), a guide tube (43), a reset spring (44) and a slider (41) for fixing the arm force frame (3); the guide rod (4) and the guide tube (43) are respectively fixed to the slider (41) and the positioning block (42); the guide rod (4) is movably sleeved on the guide tube (43); two ends of the reset spring (44) are respectively located in the guide rod (4) and in the guide tube (43); the positioning block (42) is fixed in the axial groove (13) and is located at one end close to the second training plate (11); and the slider (41) is movably arranged in the axial groove (13) and is located at one end away from the second training plate (11).

6. A movable arm strength training device according to claim 5, characterized in that: The bottom of the axial groove (13) is provided with a plurality of force adjustment grooves (14); the positioning block (42) is provided with a force adjustment block (46) for inserting into the force adjustment groove (14); the force adjustment block (46) cooperates with the different force adjustment grooves (14) to adjust the elastic force of the elastic reset component.

7. A movable arm strength training device according to claim 6, characterized in that: The arm strength frame (3) comprises a U-shaped frame and a gripping rod (31); the lower end of the U-shaped frame is detachably fixed to the slider (41), and the upper end is located above the first training plate (1) and is telescopically connected to the gripping rod (31).

8. The movable arm strength training device according to claim 7, characterized in that: The U-shaped frame and the slider (41) are connected via a clamping structure, wherein the clamping structure comprises a clamping piece fixed to the end of the U-shaped frame and a clamping groove (45) provided on the side of the slider (41), wherein the clamping piece comprises a clamping column (36), a pressing block (361), a clamping block (364), a connecting rod (363) and an elastic member (362), wherein the length of the pressing block (361) is greater than the length of the clamping block (364), and the pressing block (361) is connected to the clamping block (364) via the connecting rod (363). ) are fixed into a linkage structure, the linkage structure is symmetrically arranged on the fixing column (36), the axis lines of the pressure block (361) and the fixing block (364) are perpendicular to the axis line of the fixing column (36); the elastic member (362) is arranged between the pressure blocks (361), and the pressure block (361) and the fixing block (364) are telescopically arranged on the fixing column (36) through the elastic member (362); the U-shaped frame is fixed to the slider (41) by the fixing block (364) being inserted into the slot (45).

9. A movable arm strength training device according to claim 8, characterized in that: The clamping column (36) comprises an integrally formed connecting section and a clamping section, the connecting section is fixed on the U-shaped frame, the diameter of the clamping section is smaller than the diameter of the connecting section, the pressing block (361) is located on the connecting section, and the clamping block (364) is located on the clamping section.

10. A movable arm strength training device according to any one of claims 7 to 9, characterized in that: The upper end of the U-shaped frame is provided with an adjustment cavity for accommodating a holding rod (31), symmetrical guide grooves (32) are provided on both sides of the adjustment cavity, and a plurality of limit holes (33) are provided on the upper part of the adjustment cavity; a collar (34) is detachably fixed to the end of the holding rod (31); after the holding rod (31) is inserted into the adjustment cavity, it is fixedly connected to the collar (34) through the guide groove (32); a threaded hole matching the limit hole (33) is provided on the collar (34); and the holding rod (31) can be controlled to extend and retract on the U-shaped frame by matching the threaded hole with different limit holes (33) through bolts (35).

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