High-low pulling trainer with adjustable high pulling position
By adjusting the design of the sliding frame and limiting components, the problem of fixing the high pull position of the pull-up trainer has been solved, realizing diverse training methods and wide applicability, suitable for users of different heights.
Patent Information
- Application Number
- CN202423183060.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing pull-up machines have a fixed pull-up position, resulting in a limited range of exercises and making them unsuitable for users of different heights.
The height and angle of the pull can be adjusted by adjusting the position of the sliding bracket, and it can be fixed by the limiting component to adapt to the needs of users with different tilt angles and heights.
It enables diverse pulling exercises, suitable for users of different heights, thus expanding the applicability of the trainer.
Smart Images

Figure CN223760314U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fitness equipment, and in particular to a high and low pull training device with adjustable high and low pull positions. Background Technology
[0002] Pull-up and pull-down machines can exercise the arms and back by pulling weights. There are two training methods: pull-up and pull-down. Pull-up means pulling from top to bottom, and pull-down means pulling from front to back.
[0003] Chinese Patent Publication No. CN215585363U discloses a seated pull-up / pull-down training device, including a frame, a first tension rope, and a second tension rope. Several counterweights are mounted on the frame and connected to each other via a counterweight connecting rod. A first guide wheel is located on the left side of the frame and is connected to the frame via a guide wheel fixing bracket. From left to right, a second, third, fourth, and fifth guide wheel are sequentially mounted on the top of the frame. A bidirectional hanging wheel is located in the middle of the frame. One end of the first tension rope is connected to the counterweight connecting rod, and the other end passes sequentially through the grooves of the fifth guide wheel, the fourth guide wheel, one of the bidirectional hanging wheels, the third guide wheel, and the second guide wheel before connecting to a pull rod. One end of the second tension rope is connected to the guide wheel fixing bracket, and the other end passes sequentially through the groove of the other bidirectional hanging wheel and the first guide wheel before connecting to a handle.
[0004] However, the above technical solution has the following shortcomings:
[0005] With a fixed high-pull position, users can only perform pulling exercises in a fixed direction, resulting in a limited range of exercises. Furthermore, different users have different heights, and not everyone can grip the pull bar at the high pull point for effective exercise, further restricting the applicability of this training device. Utility Model Content
[0006] The purpose of this invention is to address the problems existing in the background technology by proposing a high-low pull training device with adjustable high-pull position. The high-pull angle and height can be adjusted by adjusting the position of the sliding frame, thus making it suitable for users to perform various styles of pull exercises at different tilt angles, as well as for users of different heights to perform high-pull exercises.
[0007] The technical solution of this utility model is a high and low pull trainer with adjustable high and low pull positions, including a trainer body and a high pull mechanism. The trainer body includes a top frame, a counterweight mechanism, a fifth wheel frame connected to the counterweight mechanism, a ninth guide wheel rotatably mounted on the fifth wheel frame, a second connecting rope hanging on the ninth guide wheel, a ninth wheel frame mounted on the top frame, and a fifteenth guide wheel rotatably mounted on the ninth wheel frame. The high pull mechanism includes a guide tube mounted on the top frame and having multiple limit holes arranged side by side, a sliding frame slidably mounted on the guide tube, a limit component mounted on the sliding frame and capable of being inserted into the limit holes, a tenth wheel frame mounted on the sliding frame, a sixteenth guide wheel rotatably mounted on the tenth wheel frame, two seventh wheel frames symmetrically mounted on the sliding frame, a twelfth guide wheel and a thirteenth guide wheel rotatably mounted on the seventh wheel frames, two connectors respectively connected to both ends of the second connecting rope, and two handles respectively connected to the two connectors or a crossbar jointly connected to the two connectors. The second connecting rope passes around the fifteenth and sixteenth guide wheels and passes between the twelfth and thirteenth guide wheels on both sides. The guide tube is inclined.
[0008] Preferably, the limiting assembly includes a connecting cylinder connected to the sliding frame, a screw cylinder threaded to the outer end of the connecting cylinder, a limiting rod slidably disposed on the screw cylinder, a pull button connected to the outer end of the limiting rod, a retaining ring disposed on the limiting rod, and a spring sleeved on the limiting rod with its two ends connected to the pull button and the retaining ring respectively.
[0009] Preferably, the main body of the trainer includes a base, a mounting cover and a support frame disposed on the base, a low-pull mechanism connected to the counterweight mechanism, and a top frame disposed on the top of the support frame.
[0010] Preferably, the counterweight mechanism includes multiple counterweight plates stacked from bottom to top inside the mounting cover and having vertically penetrating through holes and horizontally penetrating insertion holes; a pin vertically disposed at the through hole and having multiple horizontally positioned holes arranged side by side in the vertical direction; a pin inserted into one insertion hole and one positioning hole; a first wheel frame disposed at the top of the pin; a first guide wheel rotatably disposed on the first wheel frame; a bracket disposed inside the mounting cover; a first connecting rope connected at one end to the bracket; a second guide wheel and a third guide wheel rotatably disposed inside the mounting cover; a second wheel frame disposed on the mounting cover; a fourth guide wheel rotatably disposed on the second wheel frame; a third wheel frame connected to a fifth wheel frame; and a fifth guide wheel rotatably disposed on the third wheel frame. The first connecting rope passes around the first guide wheel, the second guide wheel, the third guide wheel, the fourth guide wheel, and the fifth guide wheel.
[0011] Preferably, the low-pull mechanism includes a locking ring connected to the other end of the first connecting rope, a pull handle connected to the locking ring, a fourth wheel frame mounted on the base, a sixth guide wheel rotatably mounted on the fourth wheel frame, and a seventh and eighth guide wheels rotatably mounted on the support frame. The first connecting rope passes around the sixth guide wheel and through the space between the seventh and eighth guide wheels. The pull handle has two gripping areas.
[0012] Preferably, the top frame is provided with a sixth wheel frame, an eighth wheel frame and a guide wheel frame, a tenth guide wheel is rotatably mounted on the sixth wheel frame, a fourteenth guide wheel is rotatably mounted on the eighth wheel frame, and an eleventh guide wheel is rotatably mounted on the guide wheel frame, and the second connecting rope passes around the tenth guide wheel, the eleventh guide wheel and the fourteenth guide wheel.
[0013] Preferably, the base is provided with a seat cushion and a foot pedal, an adjustment tube is slidably provided on the base, an adjustment hole is provided on the adjustment tube, a slide tube is slidably provided on the adjustment tube, a secondary limiting component that can be inserted into the adjustment hole is provided on the slide tube, and two limiting rollers are symmetrically provided at the rear end of the slide tube.
[0014] Compared with the prior art, the present invention has the following beneficial technical effects:
[0015] This invention allows for adjustment of the pull angle and height by adjusting the position of the sliding frame, making it suitable for users to perform various pull exercises at different tilt angles and for users of different heights, thus having a wide range of applications. After adjusting the position of the sliding frame on the guide tube, it is limited by a limiting component. Users can adjust their sitting position on the cushion to grip the adjusted handle for pull exercises according to their own height, or they can remain seated and grip the handle, which changes its orientation relative to their body, to perform exercises at different pull angles, resulting in diverse exercise methods. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;
[0017] Figure 2 This is a schematic diagram showing the distribution of the guide wheels in Embodiment 1 of this utility model;
[0018] Figure 3 This is a schematic diagram of the counterweight's dispensing structure;
[0019] Figure 4 A partial structural cross-sectional view for adjusting the high tension position;
[0020] Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle;
[0021] Figure 6 This is a structural schematic diagram of Embodiment 2 of the present invention.
[0022] Reference numerals: 1. Base; 2. Mounting cover; 3. Counterweight; 301. Insertion hole; 4. Insert post; 5. Pin; 6. First wheel frame; 7. First guide wheel; 8. Bracket; 9. Second guide wheel; 10. Third guide wheel; 11. Fourth guide wheel; 12. Fifth guide wheel; 13. Sixth guide wheel; 14. Seventh guide wheel; 15. Eighth guide wheel; 16. Locking ring; 17. Pull handle; 18. First connecting rope; 19. Ninth guide wheel; 20. Tenth guide wheel; 21. Eleventh guide wheel; 22. Twelfth guide wheel; 23. Thirteenth guide wheel; 24. Fourteenth guide wheel; 25. Fifteenth guide wheel; 26. Sixteenth guide wheel; 27. Connector; 28. Handle; 29. Crossbar; 30. Top frame; 31. Second wheel frame; 32. Third wheel frame; 33. Fourth wheel frame; 34. Support frame; 35. Fifth wheel frame; 36. Sixth wheel frame; 37. Seventh wheel frame; 38. Eighth wheel frame; 39. Ninth wheel frame; 40. Tenth wheel frame; 41. Second connecting rope; 42. Sliding frame; 43. Connecting cylinder; 44. Screw barrel; 45. Pull button; 46. Limiting rod; 461. Retaining ring; 47. Spring; 48. Seat cushion; 49. Limiting roller; 50. Adjusting tube; 51. Pedal; 52. Guide tube; 521. Limiting hole. Detailed Implementation
[0023] Example 1
[0024] like Figures 1-5 As shown in the figure, this embodiment proposes a high-low pull training device with adjustable high-pull position, which includes a training device body and a high-pull mechanism.
[0025] The main body of the trainer includes a base 1, a mounting cover 2 and a support frame 34 mounted on the base 1, a low-pull mechanism connected to the counterweight mechanism, a top frame 30 tilted on top of the support frame 34, a counterweight mechanism, a fifth wheel frame 35 connected to the counterweight mechanism, a ninth guide wheel 19 rotatably mounted on the fifth wheel frame 35, a second connecting rope 41 hanging on the ninth guide wheel 19, a ninth wheel frame 39 mounted on the top frame 30, and a fifteenth guide wheel 25 rotatably mounted on the ninth wheel frame 39. When the user performs high-pull exercises, the ninth guide wheel 19 can be pulled up or lowered via the second connecting rope 41.
[0026] like Figures 1-3As shown, the counterweight mechanism includes multiple counterweight plates 3 stacked from bottom to top inside the mounting cover 2, each having a vertically penetrating through hole and a horizontally penetrating insertion hole 301; a pin 4 vertically positioned at the through hole and having multiple horizontally positioned holes arranged side by side along the vertical direction; a pin 5 inserted into one insertion hole 301 and one positioning hole; a first wheel frame 6 positioned at the top of the pin 4; a first guide wheel 7 rotatably mounted on the first wheel frame 6; a bracket 8 positioned inside the mounting cover 2; and a first connecting rope 18 connected at one end to the bracket 8. The second guide wheel 9 and the third guide wheel 10 are placed inside the mounting cover 2, the second wheel frame 31 is set on the mounting cover 2, the fourth guide wheel 11 is rotatably set on the second wheel frame 31, the third wheel frame 32 is connected to the fifth wheel frame 35, and the fifth guide wheel 12 is rotatably set on the third wheel frame 32. The counterweight is selected by adjusting the pin 5 inserted into the counterweight plate 3 at different heights and the positioning hole at the corresponding height on the pin 4. The inserted counterweight plate 3 and the other counterweight plates above the counterweight plate 3 all play the role of counterweight.
[0027] The first connecting rope 18 passes around the first guide wheel 7, the second guide wheel 9, the third guide wheel 10, the fourth guide wheel 11, and the fifth guide wheel 12. When the user performs high-pull or low-pull exercises, he will pull the first connecting rope 18, which will pull the first guide wheel 7 upward. The first guide wheel 7 will drive the insert post 4 upward through the first wheel frame 6. The insert post 4 will drive the corresponding counterweight plate 3 upward through the pin 5, thus realizing weighted exercise.
[0028] The low-pull mechanism includes a locking ring 16 connected to the other end of the first connecting rope 18, a pull handle 17 connected to the locking ring 16, a fourth wheel frame 33 mounted on the base 1, a sixth guide wheel 13 rotatably mounted on the fourth wheel frame 33, and a seventh guide wheel 14 and an eighth guide wheel 15 rotatably mounted on the support frame 34. The first connecting rope 18 passes around the sixth guide wheel 13 and between the seventh guide wheel 14 and the eighth guide wheel 15. The pull handle 17 has two gripping areas. The user can hold the two gripping areas of the pull handle 17 with both hands and then pull the pull handle 17 backward. The pull handle 17 drives the first connecting rope 18 to move through the locking ring 16. The first connecting rope 18 moves by passing around the seventh guide wheel 14, the sixth guide wheel 13, and the fifth guide wheel 12. The fifth wheel frame 35 limits the position of the third wheel frame 32, preventing the fifth guide wheel 12 on the third wheel frame 32 from being pulled down further.
[0029] like Figure 1 and Figure 2As shown, the top frame 30 is equipped with a sixth wheel frame 36, an eighth wheel frame 38, and a guide wheel frame. A tenth guide wheel 20 is rotatably mounted on the sixth wheel frame 36, a fourteenth guide wheel 24 is rotatably mounted on the eighth wheel frame 38, and an eleventh guide wheel 21 is rotatably mounted on the guide wheel frame. A second connecting rope 41 passes over the tenth guide wheel 20, the eleventh guide wheel 21, and the fourteenth guide wheel 24. The second connecting rope 41 extends from both sides of the ninth guide wheel 19, with one end successively passing over the tenth guide wheel 20 and the eleventh guide wheel 21, and then through the twelfth guide wheel 22 and the thirteenth guide wheel 23 on one side, connecting to a connector 27. The other end of the second connecting rope 41 successively passes over the fourteenth guide wheel 24, the fifteenth guide wheel 25, and the sixteenth guide wheel 26, and then through the twelfth guide wheel 22 and the thirteenth guide wheel 23 on the other side, connecting to another connector 27. The fifteenth guide wheel 25 rotates in a fixed position. When the user performs low-pull exercises by pulling the handle 17, the connector 27 stops below the twelfth guide wheel 22 and the thirteenth guide wheel 23 to limit the movement.
[0030] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the high-tension mechanism includes a guide tube 52 with multiple side-by-side limiting holes 521 mounted on the top frame 30, a sliding frame 42 slidably mounted on the guide tube 52, a limiting component mounted on the sliding frame 42 and capable of being inserted into the limiting holes 521, a tenth wheel frame 40 mounted on the sliding frame 42, a sixteenth guide wheel 26 rotatably mounted on the tenth wheel frame 40, two seventh wheel frames 37 symmetrically mounted on the sliding frame 42, a twelfth guide wheel 22 and a thirteenth guide wheel 23 rotatably mounted on the seventh wheel frames 37, two connectors 27 respectively connected to both ends of a second connecting rope 41, and two handles 28 respectively connected to the two connectors 27. The second connecting rope 41 passes around the fifteenth guide wheel 25 and the sixteenth guide wheel 26, and passes between the twelfth guide wheel 22 and the thirteenth guide wheel 23 on both sides. The guide tube 52 is inclined, and the sliding frame 42 slides on the guide tube 52 along the inclined direction. When the sliding frame 42 is adjusted forward on the guide tube 52, the height of the sliding frame 42 decreases, and the height of the handle 28 decreases, thereby realizing the adjustment of the high pull height. The user can sit forward, which is convenient for shorter users to perform high pull exercises.
[0031] If the sliding frame 42 is adjusted forward and the user sits in a fixed position to perform high pull exercises, the position of the hands will change, allowing for high pull exercises from different positions and a variety of exercise styles. When the user performs high pull exercises by pulling the handle 28, the locking ring 16 stops at the seventh guide wheel 14 and the eighth guide wheel 15 to provide a limit.
[0032] like Figure 4 and Figure 5As shown, the limiting assembly includes a connecting cylinder 43 connected to the sliding frame 42, a screw cylinder 44 threaded to the outer end of the connecting cylinder 43, a limiting rod 46 slidably disposed on the screw cylinder 44, a pull button 45 connected to the outer end of the limiting rod 46, a retaining ring portion 461 disposed on the limiting rod 46, and a spring 47 sleeved on the limiting rod 46 and connected at both ends to the pull button 45 and the retaining ring portion 461 respectively. When adjusting the position of the sliding frame 42, pull the button 45 outward. The button 45 drives the limiting rod 46 to move outward. The limiting rod 46 compresses the spring 47 through the retaining ring part 461. The limiting rod 46 moves out of the limiting hole 521. At this time, slide the sliding frame 42 on the guide tube 52 to the target position. Then release the button 45. The spring 47 pushes the retaining ring part 461, driving the limiting rod 46 to re-insert into the limiting hole 521 at this time, thereby limiting the sliding frame 42 and achieving the purpose of adjusting the sliding frame 42. This, in turn, achieves the position adjustment of the grip 28, allowing the user to grip the adjusted grip 28 for high-stretch exercises.
[0033] like Figure 1 As shown, a seat cushion 48 and a pedal 51 are provided on the base 1. An adjustment tube 50 is slidably arranged on the base 1, and an adjustment hole is provided on the adjustment tube 50. A slide tube is slidably arranged on the adjustment tube 50, and a secondary limiting component is provided on the slide tube that can be inserted into the adjustment hole. The structure of the secondary limiting component is the same as that of the limiting component, including a connecting cylinder 43, a screw cylinder 44 threaded to the outer end of the connecting cylinder 43, a limiting rod 46 slidably arranged on the screw cylinder 44, a pull button 45 connected to the outer end of the limiting rod 46, a retaining ring 461 arranged on the limiting rod 46, and a spring 47 sleeved on the limiting rod 46 and connected at both ends to the pull button 45 and the retaining ring 461 respectively. The connecting cylinder 43 in the secondary limiting component is connected to the slide tube. Two limiting rollers 49 are symmetrically arranged at the rear end of the slide tube. When the user performs high and low pull exercises, he places his feet on the pedal 51 and his legs under the two limiting rollers 49 for limitation, which facilitates the application of force through the arms during exercise and improves the exercise effect. The front and rear positions of the limiting roller 49 are adjustable to suit different user needs. When adjusting the front and rear positions of the limiting roller 49, pull the button 45 outward, the spring 47 is compressed, the limiting rod 46 moves outward from the adjustment hole, slide the slide tube on the adjustment tube 50 to the target position, release the button 45, the spring 47 extends, and the limiting rod 46 is inserted into the adjustment hole on the adjustment tube 50 at this point for limiting.
[0034] This embodiment allows for adjustment of the pull angle and height by adjusting the position of the sliding frame 42, making it suitable for users to perform various pull exercises at different tilt angles and for users of different heights, thus having a wide range of applications. After adjusting the position of the sliding frame 42 on the guide tube 52, it is limited by a limiting component. The user can adjust their sitting position on the seat 48 to grip the height-adjusted handle 28 for pull exercises according to their own height, or the user can remain seated on the seat 48 and grip the handle 28, which changes position relative to the user's body, to perform exercises at different pull angles, resulting in diverse exercise forms. When exercising with the handle 28, the user can grip one handle 28 with one hand or both handles 28 simultaneously. In addition, for low-pull exercises, the user can pull the handle 17 backwards. Regardless of whether it is a high-pull or low-pull exercise, after the counterweight 3 is pulled up, it will descend under its own weight when the user reduces the pulling force.
[0035] Example 2
[0036] like Figure 6 As shown in the figure, this embodiment proposes a high and low pull training device with adjustable high and low pull positions. Compared with the first embodiment, in this embodiment, two connectors 27 are connected to a horizontal bar 29. The user grips two parts of the horizontal bar 29 with both hands and applies downward force at the same time to perform high pull training.
[0037] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.
Claims
1. A high-low pull trainer with adjustable high pull position, characterized in that, The training device comprises a main body, a high-pulling mechanism and a low-pulling mechanism. The main body comprises a top frame (30), a counterweight mechanism, a fifth wheel frame (35) connected with the counterweight mechanism, a ninth guide wheel (19) rotatably arranged on the fifth wheel frame (35), a second connecting rope (41) hung on the ninth guide wheel (19), a ninth wheel frame (39) arranged on the top frame (30), and a fifteenth guide wheel (25) rotatably arranged on the ninth wheel frame (39). The high-pulling mechanism comprises a guide pipe (52) arranged on the top frame (30) and having a plurality of limiting holes (521) arranged side by side, a sliding frame (42) slidably arranged on the guide pipe (52), a limiting assembly arranged on the sliding frame (42) and capable of being inserted into the limiting hole (521), a tenth wheel frame (40) arranged on the sliding frame (42), a sixteenth guide wheel (26) rotatably arranged on the tenth wheel frame (40), two seventh wheel frames (37) symmetrically arranged on the sliding frame (42), a twelfth guide wheel (22) and a thirteenth guide wheel (23) rotatably arranged on the seventh wheel frame (37), two connecting heads (27) respectively connected at two ends of the second connecting rope (41), and two handles (28) respectively connected with the two connecting heads (27) or a crossbar (29) commonly connected with the two connecting heads (27), the second connecting rope (41) passing around the fifteenth guide wheel (25) and the sixteenth guide wheel (26) and passing through between the twelfth guide wheel (22) and the thirteenth guide wheel (23) on both sides, and the guide pipe (52) being obliquely arranged.
2. The height and reach trainer of claim 1, wherein, The limiting assembly comprises a connecting cylinder (43) connected with the sliding frame (42), a screw cylinder (44) threadedly connected with an outer end of the connecting cylinder (43), a limiting rod (46) slidably arranged on the screw cylinder (44), a pull knob (45) connected with an outer end of the limiting rod (46), a blocking ring part (461) arranged on the limiting rod (46), and a spring (47) sleeved on the limiting rod (46) and having two ends respectively connected with the pull knob (45) and the blocking ring part (461).
3. The height and reach trainer of claim 1, wherein, The main body comprises a base (1), a mounting cover (2) and a support frame (34) arranged on the base (1), and the low-pulling mechanism connected with the counterweight mechanism, and the top frame (30) is arranged on a top of the support frame (34).
4. The height and reach trainer of claim 3, wherein, The counterweight mechanism comprises a plurality of counterweight pieces (3) stacked from bottom to top in the mounting cover (2) and having vertical through holes and horizontal insertion holes (301), an insertion column (4) vertically arranged at the through hole and having a plurality of horizontal positioning holes distributed side by side in the vertical direction, an insertion pin (5) inserted at one insertion hole (301) and one positioning hole, a first wheel frame (6) arranged at the top end of the insertion column (4), a first guide wheel (7) rotatably arranged on the first wheel frame (6), a support (8) arranged in the mounting cover (2), a first connecting rope (18) connected to one end of the support (8), a second guide wheel (9) and a third guide wheel (10) rotatably arranged in the mounting cover (2), a second wheel frame (31) arranged on the mounting cover (2), a fourth guide wheel (11) rotatably arranged on the second wheel frame (31), a third wheel frame (32) connected to a fifth wheel frame (35), and a fifth guide wheel (12) rotatably arranged on the third wheel frame (32), the first connecting rope (18) passing around the first guide wheel (7), the second guide wheel (9), the third guide wheel (10), the fourth guide wheel (11) and the fifth guide wheel (12).
5. The height and reach trainer of claim 4, wherein, The low-pull mechanism comprises a lock ring (16) connected to the other end of the first connecting rope (18), a pull handle (17) connected to the lock ring (16), a fourth wheel frame (33) arranged on the base (1), a sixth guide wheel (13) rotatably arranged on the fourth wheel frame (33), and a seventh guide wheel (14) and an eighth guide wheel (15) rotatably arranged on a support frame (34), the first connecting rope (18) passing around the sixth guide wheel (13) and passing through between the seventh guide wheel (14) and the eighth guide wheel (15), the pull handle (17) having two gripping areas.
6. The height and reach trainer of claim 1, wherein, The top frame (30) is provided with a sixth wheel frame (36), an eighth wheel frame (38) and a guide wheel frame, the sixth wheel frame (36) is rotatably provided with a tenth guide wheel (20), the eighth wheel frame (38) is rotatably provided with a fourteenth guide wheel (24), and the guide wheel frame is rotatably provided with an eleventh guide wheel (21), and a second connecting rope (41) passes around the tenth guide wheel (20), the eleventh guide wheel (21) and the fourteenth guide wheel (24).
7. The height and reach trainer of claim 3, wherein, The base (1) is provided with a seat cushion (48) and a pedal (51), and an adjusting tube (50) is slidably arranged on the base (1), the adjusting tube (50) is provided with an adjusting hole, a sliding tube is slidably arranged on the adjusting tube (50), the sliding tube is provided with a secondary limiting assembly capable of being inserted into the adjusting hole, and two limiting rollers (49) are symmetrically arranged at the rear end of the sliding tube.
Citation Information
Patent Citations
Sitting type high-low pulling trainer
CN215585363U