CN112295167B

CN112295167B - Multi-functional physical training instrument of drawing abdomen of lying on back

Info

Publication number: CN112295167B
Application number: CN202011091482.8A
Authority: CN
Inventors: 法惠玉
Original assignee: Shandong Jiaotong University
Current assignee: Shandong Jiaotong University
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2022-02-01
Anticipated expiration: 2040-10-13
Also published as: CN112295167A

Abstract

The invention provides a multifunctional physical exercise supine abdomen-contracting apparatus, which belongs to the technical field of fitness equipment, and comprises a supine base plate, wherein four corners of the lower end of the supine base plate are respectively fixed with a support frame, the front end and the rear end of the supine base plate are respectively fixed with a support frame, the support frames are in an inverted concave shape, the left ends and the right ends of the two support frames and the four support frames are respectively provided with a fixing mechanism, the near ends of the two support frames, which are close to each other, are respectively provided with a sliding chute, two sliding rods slide between the two sliding chutes, a rolling mechanism and a reset mechanism are respectively arranged in the two sliding chutes, the reset mechanism is connected with the rolling mechanism to realize the left-right movement of the rolling mechanism, the rolling mechanism is connected with the sliding rods to realize the right-movement of the sliding rods, the apparatus has simple structure, but diversified exercise modes, can be suitable for people needing various exercises, and can be comprehensively developed during exercise, and the equipment does not need to be replaced, so that the device is more convenient and faster.

Description

Multi-functional physical training instrument of drawing abdomen of lying on back

Technical Field

The invention belongs to the technical field of fitness equipment, and particularly relates to a multifunctional physical training supine abdomen-contracting instrument.

Background

With the improvement of living standard of people, obesity and belly-belly become more and more people, and with the continuous development of various fitness equipment, the requirement of people for exercise of lying on back and drawing abdomen is gradually increased, and the existing exercise device of lying on back and drawing abdomen is generally carried out by adopting a web-tightening plate, a waist-beautifying machine or a sit-up.

But current lie supine and receive abdomen exercise device exercise mode single, single exercise is unfavorable for the comprehensive of taking exercise, simultaneously because everyone's physique is different, after the exercise of lying supine and receiving abdomen, when wanting to carry out hand and shank strength exercise, still need to change the equipment, it is extremely troublesome, need set up extra load among the prior art in addition and adjust the loading structure, and with the suitable direct mount load loading position of transmission contact department of shank or knee direct contact, because fixed insecure arouses the shank injury easily, lie supine to receive abdomen exercise device to the people of different heights often need set up the slide rail and need set up outside safety alone and prevent the baffle that drops.

Disclosure of Invention

The invention aims to provide a multifunctional physical training supine abdomen-contracting apparatus, which aims to solve the technical problems that the supine abdomen-contracting training device in the prior art is single in training mode and is not beneficial to the comprehensiveness of training, meanwhile, due to different physiques of each person, when people want to perform strength training of hands and legs after the supine abdomen-contracting training is finished, the equipment needs to be replaced, and the operation is extremely troublesome, and the technical problems that a sliding rail needs to be arranged and a human body is easy to be injured are solved by matching the same specially designed handle with a tiltable baffle back plate.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a multi-functional physical training instrument of drawing abdomen of lying on back, includes the base plate of lying on the back, the lower extreme four corners department of base plate of lying on the back all is fixed with first support frame, both ends all are fixed with the second support frame around the base plate of lying on the back, the second support frame is down "concave" form, two both ends all are equipped with fixed establishment about second support frame and four first support frames, two the near-end that leans on mutually of second support frame has all dug the spout, two slide two between the spout have a slide bar, two all establish rolling mechanism and canceling release mechanical system in the spout, be connected between canceling release mechanical system and the rolling mechanism in order to realize that the rolling mechanism moves about, be connected between rolling mechanism and the slide bar in order to realize that the slide bar moves right, the front side all is equipped with stop gear around the slide bar, be connected between stop gear and the support frame in order to realize that the slide bar is left and right linear motion, the surface of the sliding rod is fixedly connected with two exercise base blocks, the left ends of the two exercise base blocks are respectively provided with a fitting groove, the fitting grooves are arc-shaped and matched with the muscles on the upper part of the knee, and the fitting grooves are provided with downward-right inclination angles;

the far ends of the two exercise base blocks are fixed with square insertion rods, a support rod is fixed between the right sides of the near ends of the two second support frames, two square insertion holes matched with the square insertion rods are drilled in the support rod, the two square insertion rods are movably inserted into the two square holes respectively, connecting ropes are fixed at the right ends of the two square insertion rods, first handles are fixed at the right ends of the two connecting ropes, a foldable backrest accommodating mechanism is arranged at the upper right side of the supine base plate, telescopic rods are fixed at the right ends of the two exercise base blocks, the right ends of the two telescopic rods are fixed with the left ends of the support rod, and second springs are arranged in the two telescopic rods; each group of limiting mechanisms comprises a limiting disc and a T-shaped sliding block, the limiting disc is fixed on the circumferential surface of the sliding rod, the limiting disc is tightly attached to the close end of the second supporting frame, the T-shaped sliding block is fixed with the limiting disc, a T-shaped sliding groove matched with the T-shaped sliding block is formed in one end, close to the limiting disc, of the second supporting frame, and the T-shaped sliding block is connected in the T-shaped sliding groove in a sliding mode;

each group of rolling mechanisms comprises two rollers and four roller grooves, the four roller grooves are respectively drilled on the upper inner wall and the lower inner wall of the sliding groove and are vertically symmetrical, the rollers are connected in the two vertically symmetrical roller grooves in a rolling manner, the two rollers are rotatably connected to the circumferential surface of the sliding rod, and a gap is reserved between the two rollers;

every group canceling release mechanical system includes thin inserted bar, stopper, hollow rod cover and first spring, the left end of hollow rod cover is the opening, it is fixed between the left end of thin inserted bar and the slide bar surface, and thin inserted bar is located between two gyro wheels, thin inserted bar activity is pegged graft in hollow rod cover, it is fixed between the right-hand member of stopper and thin inserted bar, it is fixed between the right-hand member of first spring and stopper, and fixes between the right inner wall of the other end and hollow rod cover, it is fixed between the right inner wall of hollow rod cover and second support frame to hollow rod cover, the right-hand member opening part phase-match of thin inserted bar and hollow rod cover, the height of stopper is greater than the right-hand member opening part height of hollow rod cover, stopper sliding connection is in hollow rod cover inner wall

The front end and the rear end of the supine base plate can be locked, the sliding support is provided with a second holding handle with telescopic length, and the two second holding handles are located between the second support frame and the foldable containing backrest mechanism.

The backrest mechanism comprises a backrest plate, a containing groove and a supporting clamping rod, the containing groove is cut in the right part of the upper end of the base plate which is supine, the backrest plate and the supporting clamping rod are hinged with the containing groove through a hinge, a plurality of clamping grooves matched with the supporting clamping rod are cut at the lower end of the backrest plate, and the supporting clamping rod is movably inserted into the clamping grooves.

The upper end of the back board is provided with a handle groove, and a handle is movably hinged in the handle groove through a hinge shaft.

And reinforcing transverse plates are fixed between the left inner wall and the right inner wall of the concave part at the lower ends of the two second supporting frames, and the two reinforcing transverse plates are respectively fixed between the front end and the rear end of the supine base plate.

Each group of fixing mechanism comprises a bolt and a fixing block, a threaded hole matched with the bolt is formed in the upper end of the fixing block in a chiseled mode, and the bolt is in threaded connection with the threaded hole.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention can adapt to executing various training actions by adjusting the length and the front and back supporting positions of people with different heights by adjusting the self inclination angle of the lockable sliding support matched with the supine base plate 1 without arranging a slide rail, and the extended second handle 15 can ensure that the second handle 15 is not easy to accidentally fall off during training, and in addition, the second handle 15 also assists in realizing the adjustment of the exercise load.

2. The scheme is characterized in that the supine base plate is arranged, the supine base plate is fixed and stable through the fixing mechanism, meanwhile, an exercising person can exercise supine abdomen through sit-up on the supine base plate, when the abdominal exercise is finished and leg muscle exercise is needed, the supine base plate can be sat on, so that two legs are positioned at the lower sides of two exercising base blocks and arch the two legs, so that the upper parts of two knees are positioned in two fitting grooves, at the moment, the thighs contract backwards forcefully, so that the thighs drive the two exercising base blocks to move backwards, the exercising base blocks move while driving the sliding rod to move rightwards, as the rear end of the exercising base block is connected with the telescopic rod, the second spring is arranged in the telescopic rod, and the resetting mechanism is connected to the right side of the sliding rod, so that the strength of the thighs acts on the first spring and the second spring, and the first spring and the second spring are compressed, when the thigh moves forwards, the exercise base block is reset through the elasticity of the first spring and the second spring, and the exercise is circulated and trained, so that the muscle strength of the leg can be trained.

3. In this scheme, when needs carry out hand strength exercise, sit on the base plate of lying on the back this moment, through the first handle of both hands pulling, two first handles are through connecting the square inserted bar of rope pulling this moment, make two square inserted bars drive two exercise base blocks and remove right, make exercise base block and push first spring and second spring when removing right, then loosen the hand, two first handles of repeated pulling are passed through equally, make hand muscle strength can obtain taking exercise, this device simple structure, but the mode of taking exercise is diversified, can be suitable for the personnel that need multiple exercise, make and develop comprehensively during taking exercise, and need not change the equipment, and it is more convenient.

4. In this scheme, when sitting and carry out shank and hand muscle strength training on the base plate of lying on the back, open the back board through the pulling handle this moment, then will support the kelly and rotate, and make and support the kelly and insert in the draw-in groove, stay the back board to one side, can adjust the position that supports the kelly and insert the draw-in groove according to different exercise personnel's health ratio simultaneously, make the gradient of back board different, when personnel sit hand and shank muscle strength training on the base plate of lying on the back, can lean on the back board, make the comfort level during the exercise higher.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a partial cross-sectional view of the present invention;

FIG. 3 is a partial cross-sectional view of the back plate of the present invention;

FIG. 4 is a partial cross-sectional view of the present invention at the location of the retaining disk;

fig. 5 is a perspective view of the exercise base block of the present invention.

In the figure: 1-supine base plate; 2-a second support; 3-a chute; 4-a limiting disc; 41-T shaped slider; 5-a slide bar; 6-exercise base block; 61-fitting groove; 7-T-shaped chutes; 8-square inserted link; 9-a support plate; 10-a first grip; 11-connecting ropes; 12-reinforcing transverse plates; 13-a bolt; 14-fixing block; 15-a second grip; 16-a first support frame; 17-a back board; 18-a holding tank; 19-handle slot; 20-a handle; 21-a roller; 22-roller groove; 23-thin inserted link; 24-a stopper; 25-hollow rod sleeve; 26-a first spring; 27-a telescopic rod; 28-card slot; 29-support the clamping bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-5, the present invention provides the following technical solutions:

a multi-functional physical training instrument of drawing abdomen in a supine position which characterized in that: the supine base plate comprises a supine base plate 1, wherein four corners of the lower end of the supine base plate 1 are respectively fixed with a first support frame 16, the front end and the rear end of the supine base plate 1 are respectively fixed with a support frame 2, the second support frame 2 is in an inverted concave shape, the left end and the right end of the two second support frames 2 and the four first support frames 16 are respectively provided with a fixing mechanism, the near ends of the two second support frames 2 are respectively provided with a sliding chute 3, two sliding pieces between the two sliding chutes 3 are provided with a sliding rod 5, the two sliding chutes 3 are respectively internally provided with a rolling mechanism and a reset mechanism, the reset mechanism is connected with the rolling mechanism to realize the left-right movement of the rolling mechanism, the rolling mechanism is connected with the sliding rod 5 to realize the right-left movement of the sliding rod 5, the front side and the rear side of the sliding rod 5 are respectively provided with a limiting mechanism, the limiting mechanism is connected with the second support frames 2 to realize the left-right linear movement of the sliding rod 5, the surface of the sliding rod 5 is fixedly connected with two exercise base blocks 6, the left ends of the two exercise base blocks 6 are both provided with a fitting groove 61, the far ends of the two exercise base blocks 6 are both fixed with square insertion rods 8, a support rod 9 is fixed between the right sides of the near ends of the two second support frames 2, the support rod 9 is provided with two square insertion holes matched with the square insertion rods 8, the two square insertion rods 8 are movably inserted into the two square holes respectively, the right ends of the two square insertion rods 8 are both fixed with connecting ropes 11, the right ends of the two connecting ropes 11 are both fixed with a first handle 10, and the upper right side of the supine base plate 1 is provided with a backrest mechanism;

each group of rolling mechanisms comprises two rollers 21 and two roller grooves 22, the number of the rollers 21 is four, the four roller grooves 22 cut the upper inner wall and the lower inner wall of the sliding chute 3 respectively, the four roller grooves 22 are symmetrical up and down, the rollers 21 are connected with the two roller grooves 22 which are symmetrical up and down in a rolling manner, the two rollers 21 are rotatably connected with the circumferential surface of the sliding rod 5, and a gap is reserved between the two rollers 21;

each group of reset mechanisms comprises a thin insertion rod 23, a limiting block 24, a hollow rod sleeve 25 and a first spring 26, the left end of the hollow rod sleeve 25 is open, the left end of the thin insertion rod 23 and the surface of the sliding rod 5 are fixed, the thin insertion rod 23 is positioned between two rollers 21, the thin insertion rod 23 is movably inserted into the hollow rod sleeve 25, the limiting block 24 and the right end of the thin insertion rod 23 are fixed, the first spring 26 and the right end of the limiting block 24 are fixed, the other end of the thin insertion rod is fixed with the right inner wall of the hollow rod sleeve 25, and the hollow rod sleeve 25 and the right inner wall of the second support frame 2 are fixed.

In the embodiment of the invention, the supine base plate 1 is used for supporting an exerciser to do supine abdomen-contracting exercise at the upper end of the supine base plate 1, the first supporting frame 16 is used for supporting the supine base plate 1, the fixing mechanism is used for fixing the first supporting frame 16 on the ground, when the supine abdomen-contracting exercise is carried out, the exerciser does not want to move and wants to do hand and leg exercise, when the leg exercise is carried out, the exerciser can sit on the supine base plate 1, so that the two legs are positioned at the lower sides of the two exercise base blocks 6, and the two legs are arched, so that the upper parts of the two knees are positioned in the two fitting grooves 61 and are fitted with the fitting grooves 61, the thighs are forcefully contracted backwards, so that the thighs drive the two exercise base blocks 6 to move backwards, the slide rod 5 is driven to move rightwards when the exercise base blocks 6 move, the slide rod 5 drives the two rollers 21 to roll rightwards in the roller grooves 22 at the same time, and drives the sliding rod 5 to slide to the right, at this time, the sliding rod 5 drives the thin insertion rod 23 to move to the right, so that the thin insertion rod 23 extrudes the first spring 26 through the limiting block 24, so that the first spring 26 is compressed, because the rear end of the exercise base block 6 is connected with the telescopic rod 27, and the telescopic rod 27 is internally sleeved with the second spring, so that the telescopic rod 27 always ejects the thin rod at the left end to the left, the telescopic rod 27 plays a role in resetting the exercise base block 6, when the exercise base block 6 moves to the right, the thin rod of the telescopic rod 27 is driven to move to the right, at this time, the thin rod of the telescopic rod 27 extrudes the second spring, so that the force of the thigh is acted on the first spring 26 and the second spring, so that the first spring 26 and the second spring are compressed, when the thigh moves forwards, the exercise base block 6 is reset through the elasticity of the first spring 26 and the second spring, so the circulation training, make shank muscle strength can obtain the training, when the training of hand arm strength needs to be carried out, through the first handle 10 of both hands pulling, two first handles 10 are through connecting the square inserted bar 8 of 11 pulling of rope this moment, make two square inserted bars 8 drive two and temper base block 6 and remove right, make to shift to first spring 26 and second spring to the pulling force of tempering base block 6, it is the same with above-mentioned shank exercise principle, here is no longer too much repeated, the first handle 10 of holding of circulation pulling repeatedly, make hand arm strength can obtain the exercise simultaneously. This device framework is simple, but the mode of taking exercise is diversified, can be applicable to the personnel that need multiple exercise for can comprehensive development when taking exercise, and need not to change the equipment, it is more convenient.

Referring to fig. 2, the right ends of the two exercise base blocks 6 are fixed with telescopic rods 27, the right ends of the two telescopic rods 27 are fixed with the left end of the support rod 9, and the two telescopic rods 27 are provided with second springs.

In this embodiment: when the acting force of the exercise base block 6 pushed rightwards disappears, the exercise base block 6 can be better reset, and the leg and hand strength can be better exercised by the device.

Referring to fig. 4 specifically, each set of limiting mechanism includes a limiting disc 4 and a T-shaped sliding block 41, the limiting disc 4 is fixed on the circumferential surface of the sliding rod 5, the adjacent ends of the limiting disc 4 and the second supporting frame 2 are attached tightly, the T-shaped sliding block 41 and the limiting disc 4 are fixed, a T-shaped sliding groove 7 matched with the T-shaped sliding block 41 is formed in one end of the second supporting frame 2 adjacent to the limiting disc 4, and the T-shaped sliding block 41 is slidably connected in the T-shaped sliding groove 7.

In this embodiment: when the exercise base block 6 drives the sliding rod 5 to move rightwards, the sliding rod 5 simultaneously drives the limiting circular disc 4 to move rightwards, so that the T-shaped sliding block 41 slides in the T-shaped sliding groove 7, the sliding rod 5 cannot rotate due to the matching of the T-shaped sliding block 41 and the T-shaped sliding groove 7, and the exercise base block 6 is limited by the positions of the T-shaped sliding block 41 and the T-shaped sliding groove 7 to move linearly left and right.

Referring to fig. 2, the thin insertion rod 23 is matched with the right opening of the hollow rod sleeve 25, the height of the limiting block 24 is greater than that of the right opening of the hollow rod sleeve 25, and the limiting block 24 is slidably connected in the hollow rod sleeve 25.

In this embodiment: the thin insertion rod 23 is not easy to bring the first spring 26 out of the hollow rod sleeve 25, and the thin insertion rod 23 slides left and right to be more stable.

Specifically, referring to fig. 1 and 5, the fitting groove 61 is arc-shaped to match with the upper muscle of the knee, and the fitting groove 61 is inclined to the right downward.

In this embodiment: make the person of taking exercise when carrying out shank and take exercise, the comfort level is better, and the stress point is more even.

Specifically referring to fig. 3, the backrest mechanism includes a backrest plate 17, an accommodating groove 18 and a support bar 29, the accommodating groove 18 is cut at the right portion of the upper end of the supine base plate 1, the backrest plate 17 and the support bar 29 are both hinged to the accommodating groove 18 through a hinge, the lower end of the backrest plate 17 is cut with a plurality of slots 28 matching with the support bar 29, and the support bar 29 is movably inserted into the slots 28.

In this embodiment: make the person of taking exercise lie supine when taking exercise of drawing abdomen more tired, can be through leaning on and taking exercise hand and shank strength on back board 17, can adjust through the inclination of back board 17 simultaneously for can adjust according to different people's stature than arranging, make the comfort level greatly increased who leans on back board 17.

Specifically referring to fig. 4, a handle groove 19 is cut on the upper end of the back board 17, and a handle 20 is movably hinged in the handle groove 19 through a hinge shaft.

In this embodiment: so that the back board 17 is not easy to be clamped in the accommodating groove 18, and the back board 17 is convenient to open.

Specifically, referring to fig. 1, a reinforcing transverse plate 12 is fixed between the left and right inner walls of the lower recess of the two second supporting frames 2, and the two reinforcing transverse plates 12 are respectively fixed with the front and rear ends of the supine base plate 1.

In this embodiment: make two second support frames 2 fixed more stable, support this device and be difficult for empting, the security is higher.

Specifically, referring to fig. 1, the front and rear ends of the supine base plate are slidably supported by second handles with a length capable of being extended, and the two second handles are located between the support frame and the foldable backrest receiving mechanism.

In this embodiment: when leg strength exercise is carried out, the reinforcing transverse plate 12 can be held by a hand, so that the stress point is increased during exercise, and the exercise effect is better.

Specifically, referring to fig. 1, each set of fixing mechanism includes a bolt 13 and a fixing block 14, a threaded hole matched with the bolt 13 is drilled at the upper end of the fixing block 14, and the bolt 13 is in threaded connection with the threaded hole.

In this embodiment: the supine base plate 1 and the second support frame 2 are convenient to fix on the ground, stable, firm and not easy to fall apart, and the safety is higher.

The working principle and the using process of the invention are as follows: when the device is tired after carrying out supination abdomen-contracting exercises, and when the user does not want to move and wants to carry out hand leg exercises, when the leg exercises are carried out, the user can sit on the supination base plate 1 at the moment, so that the two legs are positioned at the lower sides of the two exercise base blocks 6 and arch the two legs, the upper parts of the two knees are positioned in the two fitting grooves 61 and are fitted with the fitting grooves 61, the thighs contract backwards with force at the moment, the thighs drive the two exercise base blocks 6 to move backwards, the slide rod 5 is driven to move rightwards when the exercise base blocks 6 move, the slide rod 5 drives the two rollers 21 to roll rightwards in the roller grooves 22 and drives the slide rod 5 to slide rightwards, at the moment, the slide rod 5 drives the thin insertion rod 23 to move rightwards, the thin insertion rod 23 extrudes the first spring 26 through the limiting block 24, the first spring 26 is compressed, and the rear end of the exercise base block 6 is connected with the telescopic rod 27, and the telescopic rod 27 is sleeved with a second spring, so that the telescopic rod 27 always pushes out the thin rod at the left end leftwards, when the exercise base block 6 moves rightwards, the thin rod of the telescopic rod 27 is also driven rightwards to move, at the moment, the thin rod of the telescopic rod 27 extrudes the second spring, so that the strength of the thigh is acted on the first spring 26 and the second spring, so that the first spring 26 and the second spring are compressed, when the thigh moves forwards, the exercise base block 6 is reset through the elasticity of the first spring 26 and the second spring, the cyclic training is carried out, so that the muscle strength of the leg can be trained, when the hand-arm strength training is required, the first handles 10 are pulled through two hands, at the moment, the two first handles 10 pull the square insertion rods 8 through the connecting ropes 11, so that the two square insertion rods 8 drive the two exercise base blocks 6 to move rightwards, and the tensile force to the exercise base blocks 6 is transferred to the first spring 26 and the second spring, the same principle as the leg exercise is that the first grip 10 is repeatedly pulled in a circulating manner, so that the strength of the hand and the arm can be exercised at the same time. This device framework is simple, but the exercise mode is diversified, can be applicable to the personnel that need multiple exercise, can develop comprehensively when making the exercise, and need not change the equipment, it is more convenient, the second handle 15 is adjustable at the lockable by the sliding support cooperation supine base plate 1 self of supine base plate 1 of lying on the back, make to the people of different heights can adapt to the execution above-mentioned various exercise actions of training through the regulation of length and front and back support position, and the second handle 15 after the extension can make difficult unexpected landing when the training, in addition optional set has the gyro wheel that has wire winding on this second handle 15, optional configuration load on the gyro wheel, the other end of wire winding is connected to on slide bar (5) on this gyro wheel, thereby the shank needs to consume different energy to the promotion of laminating groove 61, thereby realize the regulation of motion load.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-functional physical training instrument of drawing abdomen in a supine position which characterized in that: the supine base plate comprises a supine base plate (1), wherein first support frames (16) are fixed at four corners of the lower end of the supine base plate (1), second support frames (2) are fixed at the front end and the rear end of the supine base plate (1), the second support frames (2) are in an inverted concave shape, fixing mechanisms are arranged at the left end and the right end of the two second support frames (2) and the four first support frames (16), sliding grooves (3) are formed in the close ends of the two second support frames (2) close to each other, a sliding rod (5) is connected between the two sliding grooves (3) in a sliding manner, a rolling mechanism and a resetting mechanism are arranged in the two sliding grooves (3), the resetting mechanism and the rolling mechanism are connected to achieve left-right movement of the rolling mechanism, the rolling mechanism and the sliding rod (5) are connected to achieve right movement of the sliding rod (5), and limiting mechanisms are arranged on the front side and the rear side of the sliding rod (5), the limiting mechanism is connected with the second supporting frame (2) to enable the sliding rod (5) to do left-right linear motion, the surface of the sliding rod (5) is fixedly connected with two exercise base blocks (6), the left ends of the two exercise base blocks (6) are both provided with a fitting groove (61), the fitting groove (61) is in an arc shape matched with the muscle on the upper portion of the knee, and the fitting groove (61) is provided with a downward-right inclination angle;

the far ends of the two exercise base blocks (6) are both fixed with square inserted rods (8), a support rod (9) is fixed between the right sides of the near ends of the two second support frames (2), the supporting rod (9) is provided with two square insertion holes matched with the square insertion rods (8), the two square insertion rods (8) are movably inserted into the two square holes respectively, the right ends of the two square insertion rods (8) are fixed with connecting ropes (11), the right ends of the two connecting ropes (11) are fixed with first handles (10), a foldable containing backrest mechanism is arranged at the right upper side of the supine base plate (1), telescopic rods (27) are fixed at the right ends of the two exercising base blocks (6), the right ends of the two telescopic rods (27) are fixed with the left end of the supporting rod (9), and second springs are arranged in the two telescopic rods (27); each group of limiting mechanisms comprises a limiting disc (4) and a T-shaped sliding block (41), the limiting disc (4) is fixed on the circumferential surface of the sliding rod (5), the adjacent ends of the limiting disc (4) and the second supporting frame (2) are tightly attached, the T-shaped sliding block (41) and the limiting disc (4) are fixed, a T-shaped sliding groove (7) matched with the T-shaped sliding block (41) is formed in one end, close to the limiting disc (4), of the second supporting frame (2), and the T-shaped sliding block (41) is connected in the T-shaped sliding groove (7) in a sliding mode;

each group of rolling mechanisms comprises two rollers (21) and two roller grooves (22), the number of the roller grooves (22) is four, the four roller grooves (22) cut the upper inner wall and the lower inner wall of the sliding groove (3) respectively, the four roller grooves (22) are vertically symmetrical, the rollers (21) are connected in the two vertically symmetrical roller grooves (22) in a rolling manner, the two rollers (21) are rotatably connected to the circumferential surface of the sliding rod (5), and a gap is reserved between the two rollers (21);

each group of reset mechanisms comprises a thin insertion rod (23), a limiting block (24), a hollow rod sleeve (25) and a first spring (26), the left end of the hollow rod sleeve (25) is open, the left end of the thin insertion rod (23) is fixed with the surface of the sliding rod (5), the thin insertion rod (23) is positioned between the two rollers (21), the thin insertion rod (23) is movably inserted into the hollow rod sleeve (25), the limiting block (24) is fixed with the right end of the thin insertion rod (23), the first spring (26) is fixed with the right end of the limiting block (24), the other end of the first spring is fixed with the right inner wall of the hollow rod sleeve (25), the hollow rod sleeve (25) is fixed with the right inner wall of the second support frame (2), the thin insertion rod (23) is matched with the right end of the hollow rod sleeve (25), the opening of the limiting block (24) is higher than the right end of the hollow rod sleeve (25), the limiting block (24) is connected in the hollow rod sleeve (25) in a sliding manner;

the front end and the rear end of the supine base plate (1) are both supported by a sliding support which can be locked, and the second handles (15) with telescopic lengths are arranged between the second support frame (2) and the foldable containing backrest mechanism.

2. The multifunctional physical exercise supination abdominal crunch of claim 1, wherein: the utility model discloses a back mechanism, including back board (17), holding tank (18) and support kelly (29), holding tank (18) are dug in the upper end right part of base plate (1) of lying on the back, back board (17) and support kelly (29) are all articulated through hinge activity between holding tank (18), the lower extreme of back board (17) is dug have a plurality ofly and support kelly (29) assorted draw-in groove (28), support kelly (29) activity is pegged graft in draw-in groove (28).

3. A multi-function physical exercise supination abdominal crunch apparatus according to claim 2 wherein: the upper end of the backrest plate (17) is provided with a handle groove (19), and a handle (20) is movably hinged in the handle groove (19) through a hinge shaft.

4. A multi-function physical exercise supination abdominal crunch apparatus according to claim 3 wherein: reinforcing transverse plates (12) are fixed between the left inner wall and the right inner wall of the concave part at the lower ends of the two second supporting frames (2), and the two reinforcing transverse plates (12) are respectively fixed with the front end and the rear end of the supine base plate (1).

5. The multifunctional physical exercise supination abdominal crunch of claim 4, wherein: each group of fixing mechanism comprises a bolt (13) and a fixing block (14), a threaded hole matched with the bolt (13) is formed in the upper end of the fixing block (14) in a chiseled mode, and the bolt (13) is in threaded connection with the threaded hole.