CN221385077U

CN221385077U - Hand push pedal sit-up type body-building device

Info

Publication number: CN221385077U
Application number: CN202321755663.5U
Authority: CN
Inventors: 王克森
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-07-06
Filing date: 2023-07-06
Publication date: 2024-07-23
Anticipated expiration: 2033-07-06

Abstract

The utility model discloses a hand-push pedal sit-up type body building device, which relates to the field of body building equipment, can integrate the functions of double-arm muscle exercise, leg muscle exercise, waist exercise and chest muscle body building device into a whole, has small occupied space in a room, can exercise double-arm muscle exercise, leg muscle exercise, waist exercise and chest muscle exercise, and particularly comprises a support frame and a body building seat, wherein double-arm back-pushing type driving counterweight devices are arranged on the left side and the right side of the rear half part of the support frame, and can exercise double-arm muscle; the left side and the right side of the vertical frame at the front end of the support frame are provided with double pedal type driving counterweight devices, so that leg muscles can be exercised; the body-building seat capable of being unfolded forwards above the rear half part of the support frame, the body-building seat backrest capable of being unfolded backwards behind the body-building seat and the foot fixing shafts on the cross beam of the vertical frame at the front end of the support frame form a sit-up device, so that sit-up movement can be performed, and waist and chest muscles can be exercised; the front end vertical frame of the support frame can be synchronously locked after the front and back telescopic translation adjustment.

Description

Hand push pedal sit-up type body-building device

Technical Field

The utility model relates to the field of fitness equipment, in particular to a hand-push pedal sit-up type fitness device.

Background

With the improvement of living standard and the acceleration of living rhythm, people do not have enough time to exercise the body in a professional gymnasium, even if people go to the professional gymnasium, ordinary people can hardly bear high exercise cost and can not exercise the leg muscles for a long time in the professional gymnasium, therefore, ordinary people are suitable for buying indoor used exercise equipment to exercise the body, but the existing indoor exercise equipment has more types, has the functions of exercise both arm muscles, leg muscles, waist and chest muscles, and has single functions.

Disclosure of Invention

Aiming at the defect of single function in the background technology, the utility model provides a hand-push pedal sit-up type body-building device, which adopts a double-arm back-push type driving counterweight device, can exercise double-arm muscles, adopts a double-pedal type driving counterweight device, can exercise leg muscles, adopts a sit-up device and can exercise waist and chest muscles, and realizes the conception that the hand-push pedal sit-up type body-building device has the functions of exercising the double-arm muscles, exercising the leg muscles and exercising the waist and chest muscles.

The technical scheme of the utility model for realizing the purpose is as follows: the hand-push pedal sit-up type body-building device comprises a support frame and a body-building seat, wherein two arms of a back-pushing type driving counterweight device are arranged on the left side and the right side of the back half part of the support frame; the left side and the right side of the vertical frame at the front end of the support frame are provided with double pedal type driving counterweight devices; the body-building seat which can be unfolded forwards above the rear half part of the support frame, the body-building seat backrest which can be unfolded backwards behind the body-building seat and the foot fixing shaft on the beam of the vertical frame at the front end of the support frame form a sit-up device; the front end vertical frame of the support frame can be synchronously locked after being adjusted in a front-back telescopic translation way.

Preferably, the double-arm push-back driving counterweight device comprises a left back driving counterweight tray capable of rotating front and back on the left side of the back half part of the supporting frame and a right back driving counterweight tray capable of rotating front and back on the right side of the back half part of the supporting frame, a left back weight group is arranged in the left back driving counterweight tray, the front edge of a bearing sleeve of the left back driving counterweight tray is a left back driving arm, the left back driving arm is connected with a left driving rod ball head, the front end of the left driving rod is provided with a left driving handle, a left driving handle blocking pad is arranged on the left driving handle, a right back weight group is arranged in the right back driving counterweight tray, the front edge of the bearing sleeve of the right back driving counterweight tray is a right back driving arm, the right back driving arm is connected with the right driving rod ball head, the front end of the right driving rod is provided with a right driving handle blocking pad, and the right driving handle blocking pad is arranged on the right driving handle.

Preferably, the dual-pedal driving counterweight device comprises a left front driving counterweight tray capable of rotating back and forth on the left side of a vertical frame at the front end of a supporting frame, a right front driving counterweight tray capable of rotating back and forth on the right side of the vertical frame at the front end of the supporting frame, a left front weight set is arranged in the left front driving counterweight tray, a left front driving arm is arranged behind a bearing sleeve of the left front driving counterweight tray, a left driving pedal is arranged at the rear end of the left front driving arm, a right front weight set is arranged in the right front driving counterweight tray, a right front driving arm is arranged behind a bearing sleeve of the right front driving counterweight tray, and a right driving pedal is arranged behind the right front driving arm.

Preferably, the sit-up device comprises a body-building seat above the rear half part of the support frame, wherein the body-building seat can be turned forward by 180 degrees and unfolded, a sit-up plate with a gradient is formed between the bottom plate of the body-building seat and the top plate of the support frame, the backrest of the body-building seat can be turned backward and unfolded, the sit-up plate with a gradient is arranged on a plane with the sit-up plate with a gradient, a sit-up pillow is arranged on the backrest of the body-building seat, and a foot fixing shaft is arranged on the beam of the stand at the front end of the support frame.

Preferably, the left rear driving counterweight tray is matched with a left rear driving counterweight tray fixing shaft on the left side of the rear half part of the support frame through the inner diameter of an inner bearing of a left rear driving counterweight tray bearing sleeve on the front side of the left rear driving counterweight tray, and is arranged on the left side of the rear half part of the support frame, and the right rear driving counterweight tray is matched with a right rear driving counterweight tray fixing shaft on the right side of the rear half part of the support frame through the inner diameter of an inner bearing of a right rear driving counterweight tray bearing sleeve on the front side of the right rear driving counterweight tray.

Preferably, the left front driving counterweight tray is matched with the left front driving counterweight tray fixing shaft on the left side of the vertical frame at the front end of the support frame through the inner diameter of the bearing sleeve of the left front driving counterweight tray behind the left front driving counterweight tray, and is arranged on the left side of the vertical frame at the front end of the support frame, and the right front driving counterweight tray is matched with the right front driving counterweight tray fixing shaft on the right side of the vertical frame at the front end of the support frame through the inner diameter of the bearing sleeve of the right front driving counterweight tray behind the right front driving counterweight tray.

Preferably, the sit-up plate in the sit-up device is formed by forward overturning and unfolding of the body-building seat through the body-building seat overturning hinge, and is supported by the sit-up plate support attached frame with the front half part of the support frame being movable, the body-building seat backrest behind the body-building seat is locked, can be unfolded backwards through the body-building seat backrest overturning hinge, and is supported by the body-building seat backrest support attached frame with the back of the support frame being movable.

Compared with the prior common body-building equipment for training the muscles of the two arms, the leg muscles and the waist and chest, the hand-push pedal sit-up body-building equipment has the beneficial effects that: the body-building equipment capable of training the muscles of the two arms, the body-building equipment capable of training the muscles of the legs and the body-building equipment capable of training the muscles of the waist and the chest are integrated, the occupied space in a room is small, and the muscles of the two arms, the muscles of the legs and the waist and the chest can be trained, so that people can be in a room at any time, the body-building equipment can selectively finish the beneficial effects of training the muscles of the two arms, the muscles of the legs, the waist and the chest, and the body-building equipment is economical and applicable, and is suitable for long-term exercise of ordinary people at home.

Drawings

FIG. 1 is a schematic view of the overall structure of a hand-push pedal sit-up exercise machine according to the present utility model;

Fig. 2 is a schematic view of a sit-up apparatus of a hand-push pedal sit-up exercise machine according to the present utility model.

Legend description: 1. a support frame; 2. a body-building seat; 3. a vertical frame at the front end of the support frame; 4. body-building seat back; 5. a left rear drive weight tray; 6. the weight tray is driven by the right rear part; 7. weight set behind the left; 8. a left rear driving counterweight tray bearing sleeve; 9. a left rear drive arm; 10. a left driving lever; 11. left driving rod ball head; 12. a left driving handle; 13. a left driving handle stop pad; 14. right rear weight stack: 15. the right rear driving counterweight tray bearing sleeve; 16. a right rear drive arm; 17. a right driving lever; 18. right driving rod ball head; 19. a right driving handle; 20. a right driving handle stop pad; 21. a left front drive weight tray; 22. a right front drive weight tray; 23. a left front weight stack; 24. a left front driving counterweight tray bearing sleeve; 25. a left front drive arm; 26. a left drive pedal; 27. a right front weight stack; 28. a right front driving counterweight tray bearing sleeve; 29. a right front driving arm; 30. a right drive pedal; 31. a body-building seat bottom plate; 32. a top plate of the support frame; 33. sit-up board; 34. sit-up pillow pad; 35. a vertical frame cross beam at the front end of the support frame; 36. a foot fixing shaft; 37. the left rear driving counterweight tray fixing shaft; 38. the counterweight tray fixing shaft is driven at the right rear; 39. a left front driving counterweight tray fixing shaft; 40. a counterweight tray fixing shaft is driven at the right front; 41. 42, body-building seat overturning hinge; 43. the sit-up plate supports the auxiliary frame; 44. 45, body-building seat backrest overturning hinge; 46. the body-building seat backrest supports the auxiliary frame.

Detailed Description

In the following, a technical solution in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, it is to be understood that the described embodiments are only some embodiments, but not all embodiments, of the present utility model, and all other embodiments obtained by those skilled in the art without improvement of the inventive effort are within the scope of the present utility model, and in the paragraphs directed to each orientation noun for convenience only for those skilled in the art who have the technical solution described in the present utility model in light of the visual orientation shown in the drawings, and the terms "set up", "mounted", "connected" and the like should be construed broadly as specific meanings given by those skilled in the art in view of the specific situation.

Referring to fig. 1-2, a hand-push pedal sit-up exercise apparatus comprises a support frame 1 and an exercise seat 2, wherein left and right sides of the rear half part of the support frame 1 are provided with a double-arm backward pushing type driving counterweight device for bearing gravity when a left rear weight set 7 and a right rear weight set 14 are lifted up by holding a left driving handle 12 and a right driving handle 19 with two hands, and the two arms are lifted up and down with two hands to forcefully push back and forth, so that muscles of the two arms can be exercised; the left and right sides of the front end stand 3 of the support frame are provided with a double-pedal driving counterweight device which is placed on the left driving pedal 26 and the right driving pedal 30 through double feet, the double legs are used for reciprocating pedaling forward with the double feet, and the double legs bear the gravity when the left front weight set 23 and the right front weight set 27 are lifted, so that leg muscles can be exercised; the body-building seat 2 which can be unfolded forwards above the rear half part of the support frame 1, the body-building seat backrest 4 which can be unfolded backwards behind the body-building seat 2 and the foot fixing shaft 36 on the vertical frame beam 35 at the front end of the support frame form a sit-up device which can do sit-up exercise and can exercise waist and chest muscles; the front vertical frame 3 of the support frame can synchronously stretch back and forth, translate, adjust and lock, and can adjust the proper distance when the left driving pedal 26 and the right driving pedal 30 are stepped on by double pedals, or the proper distance when the foot fixing shaft 36 on the beam 35 of the front vertical frame of the support frame is hooked by double feet.

As a technical optimization scheme of the double-arm push-back driving counterweight device, the double-arm push-back driving counterweight device comprises a left back driving counterweight tray 5 capable of rotating forwards and backwards on the left side of the rear half part of a supporting frame 1 and a right back driving counterweight tray 6 capable of rotating forwards and backwards on the right side of the rear half part of the supporting frame 1, wherein a left back weight block 7 is arranged in the left back driving counterweight tray 5, weights in the left back weight block 7 can be increased and decreased according to exercise force, the front side of a bearing sleeve 8 of the left back driving counterweight tray is a left back driving arm 9, the left back driving arm 9 is connected with a left driving rod ball 11, the left back driving rod 10 can be moved forwards and backwards without being influenced by the change of the angle of the left back driving arm 9, a left driving handle 12 can normally rise and fall, a left driving handle blocking pad 13 is arranged at the front end of the left driving rod 10, the left driving handle 12 is provided with a left hand force blocking pad 13, the left hand does not slide backwards when the left arm pushes backwards, the left back driving handle 6 is provided with a left back driving handle 6, the left back driving handle is provided with a left back driving handle 16, the left back driving handle 16 is connected with a right driving handle 17, the left back driving handle 16 is connected with the left back driving handle 17, the left back driving handle 16 is provided with the left back driving handle 16, the left driving handle 17 is connected with the left back driving handle 17, and the left driving handle 17 is provided with the left back driving handle 16, and the left driving handle 17 is connected with the left driving handle 17.

Specifically, the user sits on the exercise seat 2, the back leans against the exercise seat backrest 4, the left driving handle 12 and the right driving handle 19 are held by two hands, the two hands lift up and fall, the two arms are forced to push back and forth, the left rear weight set 7 in the left rear driving weight tray 5 and the right rear weight set 14 in the right rear driving weight tray 6 can lift up by taking the left rear driving weight tray fixing shaft 37 and the right rear driving weight tray fixing shaft 38 as supporting points when the left rear driving arm 9 and the right rear driving arm 16 are stressed, the two arms bear the gravity of the left rear weight set 7 and the right rear weight set 14, the two arms lift up, the left rear weight set 7 in the left rear driving weight tray 5 and the right rear weight set 14 in the right rear driving weight tray 6 are forced to fall by taking the left rear driving weight tray fixing shaft 37 and the right rear driving weight tray fixing shaft 38 as supporting points, the two arms do not bear the gravity of the left rear weight set 7 and the right rear weight set 14, and necessary conditions are provided for the two arms to push back and forth to bear the gravity force, and the purpose of exercising muscles is achieved.

As a technical optimization scheme of the utility model, the double-pedal driving counterweight device comprises a left front driving counterweight tray 21 capable of rotating back and forth on the left side of a front end vertical frame 3 of a support frame, a right front driving counterweight tray 22 capable of rotating back and forth on the right side of the front end vertical frame 3 of the support frame, wherein a left front counterweight set 23 is arranged in the left front driving counterweight tray 21, a left front driving arm 25 is arranged at the rear side of a left front driving counterweight tray bearing sleeve 24, a left driving pedal 26 is arranged at the rear end of the left front driving arm 25, a right front driving arm 29 is arranged at the rear side of a right front driving counterweight tray 22, a right driving pedal 30 is arranged at the rear end of the right front driving arm 29, and tension springs can be arranged between the bottom of the left front driving counterweight tray 21 and the right front driving counterweight tray 22 and the lower half parts of the left and right sides of the front end vertical frame 3 of the support frame, so that the driving force of the double legs can be increased.

Specifically, when the user sits on the exercise seat 2 and leans against the exercise seat backrest 4, the feet are placed on the left driving pedal 26 and the right driving pedal 30, the feet are forced to reciprocate forward, the left front weight set 23 in the left front driving weight tray 21 and the right front weight set 27 in the right front driving weight tray 22 are forced to reciprocate upward by taking the left front driving weight tray fixing shaft 39 and the right front driving weight tray fixing shaft 40 as fulcrums when the left front driving arm 25 and the right front driving arm 29 are forced, the feet bear the gravity of the left front weight set 23 and the right front weight set 27, the feet are bent back, the left front weight set 23 in the left front driving weight tray 21 and the right front weight set 27 in the right front driving weight tray 22 are forced to reciprocate downward by taking the left front driving weight tray fixing shaft 39 and the right front driving weight tray fixing shaft 40 as fulcrums, the feet do not bear the gravity of the left front weight set 23 and the right front weight set 27, and the necessary muscle conditions are provided for the feet to reciprocate forward and the feet to bear the gravity, and the purpose of legs is achieved.

As a technical optimization scheme of the sit-up device, the sit-up device comprises a body-building seat 2 above the rear half part of a support frame 1, the body-building seat 2 can be turned forward for 180 degrees to be unfolded, a sit-up plate 33 with a slope at the front lower back and higher gradient is formed by a body-building seat bottom plate 31 and a support frame top plate 32, a body-building seat backrest 4 is turned backward for being unfolded, the sit-up plate 33 with the slope at the front lower back and higher gradient is arranged on a plane, a sit-up pillow cushion 34 is arranged on the body-building seat backrest 4, and a foot fixing shaft 36 is arranged on a stand beam 35 at the front end of the support frame.

Specifically, the exercise seat 2 is turned forward by 180 degrees and unfolded, the exercise seat bottom plate 31 and the support frame top plate 32 form a sit-up plate 33 with a low front and a high back and a gradient, the exercise seat backrest 4 is turned backward and unfolded, the sit-up plate 33 with a low front and a high back and a gradient is arranged on a plane, a user lies on the sit-up plate 33, a head is rested on the sit-up pillow 34, feet are hooked on the foot fixing shafts 36 on the support frame front-end vertical frame cross beam 35, sit-ups can be normally performed, and the purpose of exercising waist and chest muscles is achieved.

As a technical optimization scheme of the utility model, in order to realize the installation of the left rear driving counterweight tray 5 and the right rear driving counterweight tray 6 in the double-arm rear pushing type driving counterweight device, the left rear driving counterweight tray 5 is matched with a left rear driving counterweight tray fixing shaft 37 on the left side of the rear half part of the support frame 1 through the inner diameter of an inner bearing of a left rear driving counterweight tray bearing sleeve 8 on the front side of the left rear driving counterweight tray 5, is installed on the left side of the rear half part of the support frame 1, and the right rear driving counterweight tray 6 is installed on the right side of the rear half part of the support frame 1 through the inner diameter of an inner bearing of a right rear driving counterweight tray bearing sleeve 15 on the front side of the right rear driving counterweight tray 6 and is matched with a right rear driving counterweight tray fixing shaft 38 on the right side of the rear half part of the support frame 1.

As a technical optimization scheme of the utility model, in order to realize the installation of the left front driving weight tray 21 and the right front driving weight tray 22 in the double pedal type driving weight device, the left front driving weight tray 21 is matched with a left front driving weight tray fixing shaft 39 on the left side of the front end stand 3 of the support frame through the inner diameter of the inner bearing of the left front driving weight tray bearing sleeve 24 behind the left front driving weight tray 21, and is installed on the left side of the front end stand 3 of the support frame, and the right front driving weight tray 22 is matched with a right front driving weight tray fixing shaft 40 on the right side of the front end stand 3 of the support frame through the inner diameter of the inner bearing of the right front driving weight tray bearing sleeve 28 behind the right front driving weight tray 22.

As a technical optimization scheme of the present utility model, in order to realize a more stable sit-up device, the sit-up plate 33 in the sit-up device is formed by forward overturning and unfolding of the exercise seat 2 through the exercise seat overturning hinges 41 and 42 and is supported by the sit-up plate supporting attachment frame 43 with the front half part of the support frame 1 movable, and the exercise seat backrest 4 at the rear of the exercise seat 2 is locked and can be unfolded backwards through the exercise seat backrest overturning hinges 44 and 45 and is supported by the exercise seat backrest supporting attachment frame 46 with the rear part of the support frame 1 movable.

The utility model relates to a working principle and a using flow of a hand-push pedal sit-up type body-building device, wherein the working principle comprises the following steps: when the user needs to exercise the muscles of the two arms and the muscles of the legs, the back of the user sits on the exercise seat 2 and leans against the backrest 4 of the exercise seat, the left driving handle 12 and the right driving handle 19 are held by the hands, the two arms which are lifted up and down are forcefully pushed back and forth, the left rear weight set 7 in the left rear driving weight tray 5 and the right rear weight set 14 in the right rear driving weight tray 6 are lifted up by taking the left rear driving weight tray fixing shaft 37 and the right rear driving weight tray fixing shaft 38 as supporting points when the left rear driving arm 9 and the right rear driving arm 16 are stressed, so that the two arms bear the gravity of the left rear weight set 7 and the right rear weight set 14, when the two arms are lifted up, the left rear weight set 7 in the left rear driving weight tray 5 and the right rear weight set 14 in the right rear driving weight tray 6 are lifted down, so that the two arms do not bear the gravity of the left rear weight set 7 and the right rear weight set 14, the purpose of exercising double-arm muscles by pushing the double arms back and forth is achieved, meanwhile, the double feet are placed on the left driving pedal 26 and the right driving pedal 30, the double feet are pushed back and forth by pushing the double feet back and forth, the left front weight set 23 in the left front driving weight tray 21 and the right front weight set 27 in the right front driving weight tray 22 are lifted upwards by taking the left front driving weight tray fixing shaft 39 and the right front driving weight tray fixing shaft 40 as supporting points when the left front driving arm 25 and the right front driving arm 29 are stressed, the double feet bear the gravity of the left front weight set 23 and the right front weight set 27, the left front weight set 23 in the left front driving weight tray 21 and the right front weight set 27 in the right front driving weight tray 22 are fallen down when the double feet are bent back, the double feet do not bear the gravity of the left front weight set 23 and the right front weight set 27, the purpose of exercising leg muscles by pushing the double feet back and forth is achieved, when the waist and chest muscles are required to be exercised, the user turns and deploys the exercise seat 2 forward by 180 degrees, the exercise seat bottom plate 31 and the support frame top plate 32 form a sit-up plate 33 with a slope at the front lower part and the rear higher part, the exercise seat backrest 4 turns and deploys backward, the sit-up plate 33 with a slope at the front lower part and the rear higher part is positioned on a plane, the user lies on the sit-up plate 33, the head is rested on the sit-up pillow 34, the feet are hooked on the foot fixing shafts 36 on the support frame front-end vertical frame cross beam 35, and the sit-up exercise can be normally performed, so that the purpose of exercising the waist and chest muscles is achieved.

The foregoing is a preferred embodiment of the present utility model, and it is clear to those skilled in the art that the technical solution of the present utility model is implemented and achieved, and has positive beneficial effects, and the details of the installation mode of the front end stand of the support frame, the number of weights and the installation mode of the weights, the installation mode of the hinge, the installation mode of the sit-up plate support attachment frame and the exercise seat backrest support attachment frame, the installation mode of the bearing and the tension spring, etc. which are not described in detail in the present specification belong to the prior art known to those skilled in the art.

Although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The hand-push pedal sit-up type body-building device comprises a support frame (1) and a body-building seat (2), and is characterized in that two arms of a back push type driving counterweight device are arranged on the left side and the right side of the back half part of the support frame (1); the left side and the right side of the vertical frame (3) at the front end of the support frame are provided with double pedal type driving counterweight devices; the sit-up device is formed by a body-building seat (2) which can be unfolded forwards above the rear half part of the support frame (1), a body-building seat backrest (4) which can be unfolded backwards behind the body-building seat (2) and a foot fixing shaft (36) on a vertical frame cross beam (35) at the front end of the support frame; the front end vertical frame (3) of the support frame can be synchronously locked after front-back telescopic translation adjustment.

2. The hand push pedal sit-up exercise machine according to claim 1, wherein the double-arm push-back driving weight device comprises a left back driving weight balance tray (5) capable of rotating back and forth on the left side of the back half part of the supporting frame (1), a right back driving weight balance tray (6) capable of rotating back and forth on the right side of the back half part of the supporting frame (1), a left back driving weight balance tray (5) is internally provided with a left back weight balance set (7), the front edge of the left back driving weight balance tray bearing sleeve (8) is a left back driving arm (9), the left back driving arm (9) is connected with a left driving rod (10) by a left driving rod ball head (11), a left driving handle (12) is mounted at the front end of the left driving rod (10), a left driving handle blocking pad (13) is mounted on the left driving handle (12), a right back driving weight balance tray (14) is mounted in the right back driving weight balance tray (6), the front edge of the right back driving weight balance tray bearing sleeve (15) is a right back driving arm (16), the front edge of the right driving arm (16) is connected with a right driving rod (17) by a right driving rod (19), and a driving rod (19) is mounted at the front end of the right driving rod (19).

3. The hand-push pedal sit-up exercise machine according to claim 1, wherein the double pedal type driving weight balancing device comprises a left front driving weight balancing tray (21) capable of rotating back and forth on the left side of a front end vertical frame (3) of the support frame, a right front driving weight balancing tray (22) capable of rotating back and forth on the right side of the front end vertical frame (3) of the support frame, a left front weight balancing tray (21) is internally provided with a left front weight group (23), the rear edge of a left front driving weight balancing tray bearing sleeve (24) is a left front driving arm (25), the rear end of the left front driving arm (25) is a left driving pedal (26), a right front weight group (27) is arranged in the right front driving weight balancing tray (22), the rear edge of a right front driving arm (29) is behind a right front driving weight balancing tray bearing sleeve (28), and the rear end of the right front driving arm (29) is a right driving pedal (30).

4. The hand-push pedal sit-up exercise machine according to claim 1, wherein the sit-up device comprises a body-building seat (2) above the rear half of the support frame (1), the body-building seat (2) can be turned and unfolded forward by 180 degrees, the body-building seat bottom plate (31) and the support frame top plate (32) form a sit-up plate (33) with a low front and a high back and a gradient, the body-building seat backrest (4) can be turned and unfolded backward, the sit-up plate (33) with a high front and a high back and a gradient is arranged on a plane, the body-building seat backrest (4) is provided with a sit-up pillow (34), and the support frame front end stand beam (35) is provided with a foot fixing shaft (36).

5. The hand-push pedal sit-up exercise machine according to claim 2, wherein the left rear driving weight tray (5) is matched with a left rear driving weight tray fixing shaft (37) on the left side of the rear half part of the support frame (1) through the inner diameter of an inner bearing of a left rear driving weight tray bearing sleeve (8) on the front side of the left rear driving weight tray (5), is arranged on the left side of the rear half part of the support frame (1), and the right rear driving weight tray (6) is matched with a right rear driving weight tray fixing shaft (38) on the right side of the rear half part of the support frame (1) through the inner diameter of an inner bearing of a right rear driving weight tray bearing sleeve (15) on the front side of the right rear driving weight tray (6).

6. A hand-push pedal sit-up exercise machine as claimed in claim 3, wherein the left front drive weight tray (21) is mounted on the left side of the support frame front end riser (3) by means of the inner diameter of the inner bearing of the left front drive weight tray bearing housing (24) behind the left front drive weight tray (21), by means of the inner diameter of the left front drive weight tray fixing shaft (39) on the left side of the support frame front end riser (3), and the right front drive weight tray (22) is mounted on the right side of the support frame front end riser (3) by means of the inner diameter of the inner bearing of the right front drive weight tray bearing housing (28) behind the right front drive weight tray (22), by means of the inner diameter of the right front drive weight tray fixing shaft (40) on the right side of the support frame front end riser (3).

7. A hand-push pedal sit-up exercise apparatus as claimed in claim 1 or 4, wherein the sit-up plate (33) in the sit-up device is formed by the exercise seat (2) being folded and unfolded forward by the exercise seat folding hinges (41), (42) and supported by the sit-up plate support attachment frame (43) of the front half of the support frame (1), and the exercise seat back (4) at the rear of the exercise seat (2) is locked and unfolded backward by the exercise seat back folding hinges (44), (45) and supported by the exercise seat back support attachment frame (46) at the rear of the support frame (1).

8. The hand-push pedal sit-up exercise machine according to claim 2, wherein tension springs can be installed between the bottoms of the left rear driving weight pallet (5) and the right rear driving weight pallet (6) in the double-arm rear pushing driving weight device and the lower left and right sides of the rear half part of the support frame (1).

9. A hand-push pedal sit-up exercise machine according to claim 3, wherein tension springs are installed between the bottoms of the left front driving weight tray (21) and the right front driving weight tray (22) of the double pedal driving weight device and the lower half parts of the left and right sides of the front end stand (3) of the support frame.