CN111437564A

CN111437564A - Sports training apparatus subassembly

Info

Publication number: CN111437564A
Application number: CN202010324736.XA
Authority: CN
Inventors: 邢立付
Original assignee: Ningbo Institute of Finance and Economics
Current assignee: Ningbo Institute of Finance and Economics
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-07-24

Abstract

The invention relates to a sports training instrument assembly, which relates to the technical field of sports equipment, wherein a pulley assembly is fixedly arranged on a support, a limiting groove is fixedly arranged on the support, a balancing weight is slidably arranged in the limiting groove, the balancing weight is fixedly arranged on the movable end of the pulley assembly, a guy cable is wound on the pulley assembly, the movable end of the guy cable is fixedly arranged on a handle assembly, a seat is fixedly arranged on the left side edge of the support, and the seat is arranged below the handle assembly; it is through changing the cable and winding around the number of turns on the movable pulley in the assembly pulley, changes the variable force multiple of cable, and then changes the pulling force of handle department on the cable under the unchangeable prerequisite of balancing weight quantity, and then changes and adjusts training burden gravity size, and convenient operation.

Description

Sports training apparatus subassembly

Technical Field

The invention relates to the technical field of sports equipment, in particular to a sports training instrument assembly.

Background

Physical training apparatus can carry out the weight training through the balancing weight, and the assembly pulley is used for changing the pulling force of handle department can be installed to this type of apparatus usually, and then reaches the effect of weight training.

Sports training apparatus among the prior art can carry out different counter weight ratio training through increasing and decreasing the balancing weight, but this type of apparatus is when the operation, because of needs increase and decrease balancing weight, can cause the balancing weight to bear a weight of a seat focus and change, and then bear unchangeable operation when a seat removes at the balancing weight, and the operation difficulty when changing the balancing weight needs to be improved.

Disclosure of Invention

The invention aims to provide a sports training instrument assembly which is reasonable in design and convenient to use, aiming at the defects and shortcomings of the prior art, the variable force multiple of a guy cable is changed by changing the number of turns of the guy cable wound on a movable pulley in a pulley block, the pulling force of a handle on the guy cable is changed on the premise that the number of balancing weights is not changed, the training negative gravity is changed and adjusted, and the operation is convenient.

In order to achieve the purpose, the invention adopts the technical scheme that: the adjustable sliding seat comprises a support, a balancing weight, a pulley assembly and a handle assembly, wherein the pulley assembly is fixedly arranged on the support, a limiting groove is fixedly arranged on the support, the balancing weight is arranged in the limiting groove in a sliding manner, the balancing weight is fixedly arranged on the movable end of the pulley assembly, a guy cable is wound on the pulley assembly, the movable end of the guy cable is fixedly arranged on the handle assembly, a seat is fixedly arranged on the left side edge of the support, and the seat is arranged below the handle assembly;

the pulley component comprises a fixed pulley block and a movable pulley, wherein the fixed pulley block is fixedly arranged on a support, the fixed pulley block is arranged above a limiting groove, a mounting seat is arranged in the limiting groove in a sliding manner, a plurality of sliding blocks are movably arranged in the mounting seat, the movable pulley is arranged on the sliding blocks in a rotating manner through a bearing, two first limiting plates are fixedly arranged on the front side wall and the rear side wall of the mounting seat in a bilateral symmetry manner, a first limiting hole is formed in each first limiting plate, a first threaded sleeve is fixedly arranged on each sliding block, a first screw rod is screwed in each first threaded sleeve in a penetrating manner, the left end and the right end of each first screw rod are respectively penetrated in the first limiting holes in the left side and the right side, two second limiting plates are fixedly arranged on the support, the second limiting plates are bilaterally symmetrically arranged on the two sides; the guy cable is fixedly arranged at the lower end of the fixed pulley block, the guy cable is sequentially wound on the fixed pulley block and the movable pulley, and the balancing weight is fixedly arranged on the lower side wall of the mounting seat;

the handle component contain grab handle, rolling wheel, wherein the rolling wheel bearing housing is established on grabbing the grab handle, grab and fixedly on the grab handle and be provided with spacing, and spacing erects on the rolling wheel, the expansion end activity of cable passes spacing back, fixes on the rolling wheel around establishing, fixedly on the lateral wall of rolling wheel be provided with No. two thread bushings, No. two thread bushings wear to establish the screw thread and have connect No. two screw rods soon, spacing has seted up No. three spacing holes on putting up, the expansion end activity of No. two screw rods is worn to establish in No. three spacing downtheholess.

Further, the left side wall of support on fixedly be provided with the guide bar No. one, the slip is provided with the mount on the guide bar No. one, the fixed lead screw that is provided with on the support, the lead screw activity is worn to establish on the mount, the screw thread is equipped with the screw soon on the lead screw, the screw movable clamp is established in the mount, the activity is worn to be equipped with No. two guide bars on the mount, the fixed leading wheel that is provided with in left end of No. two guide bars, the cable activity is around establishing on the leading wheel, the fixed lead screw that is provided with No. two on the right side wall of mount, No. two lead screw activities are worn to establish on the mount, the screw thread is equipped with the screw soon on No. two lead screws, No. two screw movable clamps are established in the mount.

Furthermore, an inclined plate is fixedly arranged on the left side edge of the seat, and the lower side edge of the inclined plate is fixedly arranged on the support.

Furthermore, the mounting seat on seted up the slot, the oral area downside of slot is provided with the extension board, and the extension board is fixed to be set up on the mounting seat, inserts on the extension board and establishes the screw thread and has connect the gag lever post soon, the gag lever post shelters from the oral area that sets up at the slot.

Furthermore, the inhaul cable is movably sleeved with a protective sleeve, and the protective sleeve is fixedly arranged on the limiting frame in a penetrating mode.

Furthermore, both ends of the grab handle are fixedly provided with hand guards.

The working principle of the invention is as follows: a user sits on the seat, pulls the pull rope through the handle assembly, and then drives the counterweight block to move through the pull rope and the pulley assembly, so that the weight training is realized, and the strength of the weight training is adjusted by adjusting the quantity of the pull force at the handle assembly through adjusting the movable pulleys in the pulley assembly; sliding the sliding block into the mounting seat, connecting a first thread sleeve with a first limiting plate through a first screw, fixing a plurality of movable pulleys on the mounting seat to form a movable pulley block, and further matching with a fixed pulley block to pull the balancing weight; the sliding block slides out of the mounting seat and moves to a second limiting plate, a first thread sleeve is connected with the second limiting plate through a second screw, and then a movable pulley is fixed on the support, the movable pulley is equal to a fixed pulley in use at the moment, the number of the movable pulleys fixed on the mounting seat is adjusted, the number of the movable pulleys in a movable pulley block in a pulley assembly is adjusted, the force required by a guy cable for pulling a balancing weight is adjusted, and the pulling force at the handle assembly is controlled; rotate the winding wheel and wind the cable on the winding wheel, and then the length of adjustment mobilizable cable, and then the initial position of grab handle is adjusted, and the user that adapts to the difference uses, after adjusting the completion, passes No. two screw rods and inserts in No. two threaded sleeves behind No. three spacing holes, is about to the winding wheel and fixes with spacing, can make the cable around on the winding wheel can not emit.

After adopting the structure, the invention has the beneficial effects that:

1. the movable pulley slides in the mounting seat through the sliding block, the sliding block is connected with the mounting seat through the first screw rod to form a movable pulley block, the movable pulley block is matched with the fixed pulley block and is internally conducted through the inhaul cable to be further connected with the balancing weight to form a force conduction system, a user can conveniently carry out weight training, the change of the load of the movable end of the inhaul cable is realized by changing the number of the movable pulleys on the mounting seat, and the training weight of the user is finally adjusted;

2. the stay cable penetrates through the limiting frame and is wound on the winding wheel, the winding wheel is limited and fixed with the limiting frame through a second screw rod, the length of the movable end of the stay cable is adjusted by winding and unwinding the stay cable on the winding wheel, and then the height of the grab handle is adjusted to adapt to the use requirements of users with different heights;

3. the leading wheel is fixed on the mounting bracket, and the mounting bracket horizontal slip is on the mount, and the mount slides from top to bottom on the support, adjusts the low point of leading wheel to support, can walk around the lower extreme back of leading wheel with the cable for the gripping handle upwards stimulates, and then the person of facilitating the use grasps the gripping handle and upwards stimulates and carry out the training of bearing a burden.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a right side view of fig. 1.

Fig. 4 is an enlarged view of a portion a in fig. 1.

Fig. 5 is an enlarged view of a portion B in fig. 2.

Fig. 6 is a schematic structural view of the spacing frame of the present invention.

Fig. 7 is a schematic structural view of the fixing frame and the mounting frame of the present invention.

Description of reference numerals:

the device comprises a support 1, a balancing weight 2, a pulley component 3, a fixed pulley block 3-1, a limiting groove 3-2, a mounting seat 3-3, a sliding block 3-4, a fixed pulley 3-5, a first limiting plate 3-6, a first limiting hole 3-7, a first thread sleeve 3-8, a first screw rod 3-9, a second limiting plate 3-10, a second limiting hole 3-11, a handle component 4, a winding wheel 4-1, a gripping handle 4-2, a limiting frame 4-3, a second thread sleeve 4-4, a second screw rod 4-5, a third limiting hole 4-6, a guy cable 5, a seat 6, a first guide rod 7, a fixing frame 8, a first screw rod 9, a first screw nut 10, a second guide rod 11, a mounting frame 12, a second screw rod 13, a second screw nut 14, a guide wheel 15, an inclined plate 16, a 17 slot, a positioning groove, Extension board 18, gag lever post 19, protecting tube 20, hand protector 21.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 7, the present embodiment includes a support 1, a weight block 2, a pulley assembly 3, and a handle assembly 4, wherein the pulley assembly 3 is fixedly disposed on the support 1, a limiting groove 3-2 is welded on the support 1, the weight block 2 is slidably disposed in the limiting groove 3-2, the weight block 2 is fixedly disposed on a movable end of the pulley assembly 3, a cable 5 is wound on the pulley assembly 3, the movable end of the cable 5 is fixedly disposed on the handle assembly 4, a seat 6 is riveted on a left side edge of the support 1, the seat 6 is disposed below the handle assembly 4, a sloping plate 16 is riveted on a left side edge of the seat 6, a lower side edge of the sloping plate 16 is riveted on the support 1, and a user can lie on the sloping plate 16 to perform a sit-up exercise;

the pulley component 3 comprises a fixed pulley block 3-1 and a movable pulley 3-5, wherein the fixed pulley block 3-1 is riveted on the bracket 1, the fixed pulley block 3-1 is arranged above the limiting groove 3-2, a mounting seat 3-3 is arranged in the limiting groove 3-2 in a sliding manner, four sliding blocks 3-4 are movably arranged in the mounting seat 3-3, the movable pulley 3-5 is arranged on the sliding block 3-4 in a bearing manner, two first limiting plates 3-6 are symmetrically welded on the front side wall and the rear side wall of the mounting seat 3-3 in a left-right manner, a first limiting hole 3-7 is arranged on the first limiting plate 3-6, a first thread sleeve 3-8 is welded on the sliding block 3-4, a first screw rod 3-9 is screwed in the first thread sleeve 3-8, and the left end and the right end of the first screw rod 3-9 are respectively arranged in the first limiting holes 3-7 on the left side and the right side, two second limiting plates 3-10 are welded on the bracket 1, the second limiting plates 3-10 are bilaterally symmetrically arranged on two sides of the upper end of the limiting groove 3-2, second limiting holes 3-11 are formed in the second limiting plates 3-10, the sliding block 3-4 is connected with the second limiting plates 3-10 through a first screw 3-9, then the movable pulleys 3-5 are fixed, at the moment, the movable pulleys 3-5 are equal to the fixed pulleys, the number of the movable pulleys 3-5 on the mounting seat 3-3 is changed, the variable force coefficient of the pulley assembly 3 is changed, and finally the tensile force of the movable end of the inhaul cable 5 is changed; the inhaul cable 5 is tied and fixed at the lower end of a fixed pulley block 3-1, the inhaul cable 5 is sequentially wound on the fixed pulley block 3-1 and a movable pulley 3-5, the balancing weight 2 is riveted on the lower side wall of the mounting seat 3-3, a slot 17 is formed in the mounting seat 3-3, an extension plate 18 is arranged on the lower side of the opening of the slot 17, the extension plate 18 is welded on the mounting seat 3-3, a limiting rod 19 is screwed on the extension plate 18 through inserted threads, the limiting rod 19 is shielded and arranged at the opening of the slot 17, a counterweight component is inserted into the slot 17, the load of the mounting seat 3-3 can be increased, and the limiting of the device in the slot 17 is carried out through the limiting rod 19;

the handle component 4 comprises a grab handle 4-2 and a rolling wheel 4-1, wherein the rolling wheel 4-1 is sleeved on the grab handle 4-2 through a bearing, a limiting frame 4-3 is welded on the grab handle 4-2, the limiting frame 4-3 is erected on the rolling wheel 4-1, the movable end of a guy cable 5 is wound and fixed on the rolling wheel 4-1 after movably penetrating through the limiting frame 4-3, a second threaded sleeve 4-4 is welded on the outer side wall of the rolling wheel 4-1, a second screw rod 4-5 is screwed on the second threaded sleeve 4-4 through a thread, a third limiting hole 4-6 is arranged on the limiting frame 4-3, the movable end of the second screw rod 4-5 is movably penetrated in the third limiting hole 4-6, a protective sleeve 20 is movably sleeved on the guy cable 5, the protective sleeve 20 is penetrated and fixed on the limiting frame 4-3 through an adhesive, when the grab handle 4-2 is pulled, the contact point of the inhaul cable 5 and the limiting frame 4-3 is severely scraped and is easily cut off, the inhaul cable 5 is sleeved by the protective sleeve 20, the contact area of the inhaul cable 5 is enlarged, the scraping degree is reduced, the hand guards 21 are welded at the two ends of the grab handle 4-2, and the hand guards 21 prevent a user from slipping when the user grabs the grab handle 4-2;

a first guide rod 7 is welded on the left side wall of a support 1, a fixed frame 8 is arranged on the first guide rod 7 in a sliding mode, a first screw rod 9 is welded on the support 1, the first screw rod 9 is movably arranged on the fixed frame 8 in a penetrating mode, a first nut 10 is screwed on the first screw rod 9 in a threaded mode, the first nut 10 is movably clamped in the fixed frame 8, the first nut 10 is rotated to adjust the vertical height of the fixed frame 8 on the support 1, a second guide rod 11 is movably arranged on the fixed frame 8 in a penetrating mode, an installation frame 12 is welded at the left end of the second guide rod 11, a guide wheel 15 is arranged on the installation frame 12 in a riveting mode, a stay cable 5 is movably wound on the guide wheel 15, a second screw rod 13 is welded on the installation frame 12, the second screw rod 13 is movably arranged on the fixed frame 8 in a penetrating mode, a second nut 14 is screwed on the second screw rod 13 in a threaded mode, the second nut 14 is movably clamped in the fixed frame 8, and the left and right position of the installation frame 12 on the fixed, finally, the position of the guide wheel 15 is adjusted, so that the cable 5 can be conveniently wound around the lower end of the guide wheel 15, the movable end of the cable 5 can be pulled upwards, and weight training is performed.

The working principle of the specific embodiment is as follows: a user sits on the seat 6, pulls the pull rope 5 through the handle component 4, and then drives the balancing weight 2 to move through the pull rope 5 and the pulley component 3, so that weight training is realized, and the strength of the weight training is adjusted by adjusting the amount of the pulling force at the handle component 4 through adjusting the number of movable pulleys 3-5 in the pulley component 3; sliding a sliding block 3-4 into a mounting seat 3-3, connecting a first thread bushing 3-8 with a first limiting plate 3-6 through a first screw rod 3-9, further fixing a movable pulley 3-5 on the mounting seat 3-3 to form a movable pulley block, and further matching with a fixed pulley block 3-1 to pull a balancing weight 2; sliding the sliding block 3-4 out of the mounting seat 3-3 and moving the sliding block to a second limiting plate 3-10, connecting a first threaded sleeve 3-8 with the second limiting plate 3-10 through a second screw rod 4-5, and further fixing a movable pulley 3-5 on the bracket 1, wherein the movable pulley 3-5 is the same as a fixed pulley, and further adjusting the number of the movable pulleys 3-5 fixed on the mounting seat 3-3, further adjusting the number of the movable pulleys 3-5 in the movable pulley block in the pulley assembly 3, further adjusting the force required by the inhaul cable 5 to pull the balancing weight 2, and realizing the control of the tension at the handle assembly 4; the winding wheel 4-1 is rotated to wind the inhaul cable 5 on the winding wheel 4-1, so that the length of the movable inhaul cable 5 is adjusted, the initial position of the grab handle 4-2 is adjusted to adapt to different users, after the adjustment is completed, the second screw rod 4-5 penetrates through the third limiting hole 4-6 and is inserted into the second thread sleeve 4-4, the winding wheel 4-1 and the limiting frame 4-3 are fixed, and the inhaul cable 5 wound on the winding wheel 4-1 cannot be released.

After adopting above-mentioned structure, this embodiment beneficial effect does:

1. the movable pulley 3-5 slides in the mounting seat 3-3 through the sliding block 3-4, the sliding block 3-4 is connected with the mounting seat 3-3 through the first screw rod 3-9 to form a movable pulley block, the movable pulley block is matched with the fixed pulley block 3-1 and carries out inner conduction through the inhaul cable 5 to further connect the balancing weight 2 to form a force conduction system, so that a user can conveniently carry out weight training, the change of the load weight of the movable end of the inhaul cable 5 is realized by changing the number of the movable pulleys 3-5 on the mounting seat 3-3, and the training load weight of the user is finally adjusted;

2. the inhaul cable 5 passes through the limiting frame 4-3 and then is wound on the winding wheel 4-1, the winding wheel 4-1 is limited and fixed with the limiting frame 4-3 through a second screw rod 4-5, the length of the movable end of the inhaul cable 5 is adjusted by winding and unwinding the inhaul cable 5 on the winding wheel 4-1, and then the height of the grab handle 4-2 is adjusted to adapt to the use requirements of users with different heights;

3. the guide wheel 15 is fixed on the mounting frame 12, the mounting frame 12 slides on the fixing frame 8 left and right, the fixing frame 8 slides on the support 1 up and down, the guide wheel 15 is adjusted to a low point of the support 1, and the pull rope 5 can bypass the lower end of the guide wheel 15, so that the grab handle 4-2 is pulled upwards, and a user can conveniently grab the grab handle 4-2 and pull upwards to carry out weight training.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A physical training apparatus assembly characterized by: the novel adjustable sliding block comprises a support (1), a balancing weight (2), a pulley assembly (3) and a handle assembly (4), wherein the pulley assembly (3) is fixedly arranged on the support (1), a limiting groove (3-2) is fixedly arranged on the support (1), the balancing weight (2) is slidably arranged in the limiting groove (3-2), the balancing weight (2) is fixedly arranged at the movable end of the pulley assembly (3), a pulling cable (5) is wound on the pulley assembly (3), the movable end of the pulling cable (5) is fixedly arranged on the handle assembly (4), a seat (6) is fixedly arranged on the left side edge of the support (1), and the seat (6) is arranged below the handle assembly (4);

the pulley component (3) comprises a fixed pulley block (3-1) and a movable pulley (3-5), wherein the fixed pulley block (3-1) is fixedly arranged on the bracket (1), the fixed pulley block (3-1) is arranged above the limiting groove (3-2), a mounting seat (3-3) is arranged in the limiting groove (3-2) in a sliding manner, a plurality of sliding blocks (3-4) are movably arranged in the mounting seat (3-3), the movable pulley (3-5) is rotatably arranged on the sliding blocks (3-4) through bearings, two first limiting plates (3-6) are fixedly arranged on the front side wall and the rear side wall of the mounting seat (3-3) in a bilateral symmetry manner, a first limiting hole (3-7) is formed in each first limiting plate (3-6), and a first thread sleeve (3-8) is fixedly arranged on each sliding block (3-4), a first screw rod (3-9) is screwed in the first threaded sleeve (3-8) in a penetrating manner, the left end and the right end of the first screw rod (3-9) are respectively penetrated in a first limiting hole (3-7) on the left side and the right side, two second limiting plates (3-10) are fixedly arranged on the bracket (1), the second limiting plates (3-10) are bilaterally symmetrically arranged on two sides of the upper end of the limiting groove (3-2), and second limiting holes (3-11) are formed in the second limiting plates (3-10); the inhaul cable (5) is fixedly arranged at the lower end of the fixed pulley block (3-1), the inhaul cable (5) is sequentially wound on the fixed pulley block (3-1) and the movable pulley (3-5), and the balancing weight (2) is fixedly arranged on the lower side wall of the mounting seat (3-3);

the handle component (4) comprises a grab handle (4-2) and a rolling wheel (4-1), wherein the rolling wheel (4-1) is sleeved on the grab handle (4-2) through a bearing, the grab handle (4-2) is fixedly provided with a limit frame (4-3), and the limiting frame (4-3) is erected on the rolling wheel (4-1), after the movable end of the inhaul cable (5) movably passes through the limiting frame (4-3), the winding device is fixed on a winding wheel (4-1), a second threaded sleeve (4-4) is fixedly arranged on the outer side wall of the winding wheel (4-1), a second screw rod (4-5) is screwed on the second threaded sleeve (4-4) in a penetrating and threaded manner, a third limiting hole (4-6) is formed in a limiting frame (4-3), and the movable end of the second screw rod (4-5) is movably arranged in the third limiting hole (4-6).

2. A physical training apparatus assembly as claimed in claim 1 wherein: the left side wall of the support (1) is fixedly provided with a first guide rod (7), the first guide rod (7) is slidably provided with a fixed frame (8), the support (1) is fixedly provided with a first lead screw (9), the first lead screw (9) is movably arranged on the fixed frame (8) in a penetrating way, the first lead screw (9) is screwed with a first screw (10), the first screw (10) is movably clamped in the fixed frame (8), the fixed frame (8) is movably arranged with a second guide rod (11) in a penetrating way, the left end of the second guide rod (11) is fixedly provided with a mounting frame (12), the mounting frame (12) is fixedly provided with a guide wheel (15), the inhaul cable (5) is movably wound on the guide wheel (15), the right side wall of the mounting frame (12) is fixedly provided with a second lead screw (13), the second lead screw (13) is movably arranged on the fixed frame (8), the second lead screw (13) is screwed with a second screw (14), the second nut (14) is movably clamped in the fixed frame (8).

3. A physical training apparatus assembly as claimed in claim 1 wherein: the left side edge of the seat (6) is fixedly provided with an inclined plate (16), and the lower side edge of the inclined plate (16) is fixedly arranged on the bracket (1).

4. A physical training apparatus assembly as claimed in claim 1 wherein: the mounting seat (3-3) is provided with a slot (17), an extension plate (18) is arranged on the lower side of the opening of the slot (17), the extension plate (18) is fixedly arranged on the mounting seat (3-3), a limiting rod (19) is screwed on the extension plate (18) in an inserting mode through threads, and the limiting rod (19) is arranged at the opening of the slot (17) in a shielding mode.

5. A physical training apparatus assembly as claimed in claim 1 wherein: the protective sleeve (20) is movably sleeved on the inhaul cable (5), and the protective sleeve (20) is fixedly arranged on the limiting frame (4-3) in a penetrating mode.

6. A physical training apparatus assembly as claimed in claim 1 wherein: hand guards (21) are fixedly arranged at the two ends of the grab handle (4-2).

7. A physical training apparatus assembly as claimed in claim 1 wherein: the working principle is as follows: a user sits on the seat (6), pulls the pull rope (5) through the handle component (4), and then drives the balancing weight (2) to move through the pull rope (5) and the pulley component (3), so that the weight training is realized, and the strength of the weight training is adjusted by adjusting the number of movable pulleys (3-5) in the pulley component (3) to adjust the pulling force at the handle component (4); sliding a sliding block (3-4) into a mounting seat (3-3), connecting a first thread bushing (3-8) with a first limiting plate (3-6) through a first screw (3-9), fixing a plurality of movable pulleys (3-5) on the mounting seat (3-3) to form a movable pulley block, and further matching with a fixed pulley block (3-1) to pull a balancing weight (2); sliding a sliding block (3-4) out of a mounting seat (3-3) and moving the sliding block to a second limiting plate (3-10), connecting a first thread sleeve (3-8) with the second limiting plate (3-10) through a second screw (4-5), and further fixing a movable pulley (3-5) on a support (1), wherein the movable pulley (3-5) is used as a fixed pulley, so that the number of the movable pulleys (3-5) fixed on the mounting seat (3-3) is adjusted, the number of the movable pulleys (3-5) in a movable pulley block in a pulley assembly (3) is adjusted, the force required by pulling a balance weight block (2) through a pulling cable (5) is adjusted, and the pulling force at the handle assembly (4) is controlled; the winding wheel (4-1) is rotated to wind the inhaul cable (5) on the winding wheel (4-1), so that the length of the movable inhaul cable (5) is adjusted, the initial position of the grab handle (4-2) is adjusted, the inhaul cable is suitable for different users to use, after the adjustment is completed, the second screw rod (4-5) penetrates through the third limiting hole (4-6) and then is inserted into the second threaded sleeve (4-4), namely, the winding wheel (4-1) is fixed with the limiting frame (4-3), and the inhaul cable (5) wound on the winding wheel (4-1) can not be released.