CN220632495U - Tractor - Google Patents

Abstract

The utility model belongs to the technical field of medical auxiliary instruments, and particularly discloses a tractor, which comprises a guide shell, a driving piece, a sleeve, a guide adjusting piece, a first pull rope, a third pull rope, a winding piece and an angle adjusting piece, wherein a lifting rod penetrates through the guide shell and is connected with the guide shell in a sliding manner; then through the setting of angle adjusting part, through the promotion to the sleeve pipe, so realize the rotation of sleeve pipe, then let the sleeve pipe can carry out angle modulation, then drive the third stay cord through the sleeve pipe and carry out angle modulation, just realized controlling and adjusting patient's arm angle of expansion yet, in addition, in the utility model, still through the setting of driving part, can control the height of lifter, in order to satisfy different arm length patient's use.

Description

Tractor

Technical Field

The utility model relates to the technical field of medical auxiliary instruments, in particular to a tractor.

Background

Because of the special anatomy of the shoulder joint, when performing the shoulder arthroscopic surgery, the patient usually needs to adopt a side-to-back standing position, so as to obtain a good surgical field and facilitate the surgical operation, and often needs to use an upper limb traction device to maintain the arm of the patient to be unfolded, so that the traction device is needed.

To further understand the prior art traction devices, the search is carried out with the following bulletin numbers: chinese patent CN202960617U discloses a medical device, in particular to a simple shoulder arthroscopic surgery traction frame. The traction frame comprises a T-shaped support frame formed by connecting a support rod and a cross beam, pulleys and traction wires, wherein the two ends of the T-shaped support frame are grooved, the pulleys and the traction wires are arranged in the grooves, and the traction wires penetrate through the cross beam of the T-shaped support frame and are hung on the pulleys; the two ends of the T-shaped supporting frame are respectively provided with a pulley baffle plate, the pulley baffle plates are arranged on the upper parts of the pulleys and connected with the cross beam, and the traction wires penetrate out from the cavity formed between the pulley baffle plates and the pulleys. The pulley is fixed at two ends of the cross beam of the T-shaped support frame through the pulley shaft, the pulley baffle plates are arranged on the pulley and connected with the cross beam of the support frame, the pulling wire is prevented from falling off when the angle of the shoulder joint is adjusted in operation, and the use safety is high.

Through analysis, the patent has the following disadvantages in actual use:

in the patent, the supporting rod and the beam are fixedly connected with each other to form a T-shaped structure, so that when the arm of a patient is pulled by the traction rope, the opening angle of the arm of the patient can not be controlled by adjusting the angle of the control cross beam, and the arm can only be lifted by one traction rope; however, the arm cannot be stretched to keep the stretched state; meanwhile, the traction frame in the patent cannot realize height adjustment, and cannot meet the use requirements of patients with different arm lengths.

Disclosure of Invention

Aiming at the technical problems that the opening angle of the arm of a patient cannot be traction-controlled and the height cannot be adjusted in the prior art, the utility model provides a tractor.

The technical scheme adopted by the utility model is as follows: the utility model provides a tractor, includes direction shell, driving piece, sleeve pipe, direction regulating part, first stay cord, third stay cord, winding piece, angle regulating part, run through and sliding connection has the lifter in the direction shell, the driving piece sets up in the shell for drive the lifter carries out perpendicular rectilinear motion, the sleeve pipe rotates the top of connecting at the lifter plate, the direction regulating part cover is established in the lifter outside, first stay cord passes direction regulating part back fixedly connected with sleeve, the weight has been hung to the bottom of first stay cord, outside fixed connection with the sleeve after the third stay cord passes the sleeve pipe, the winding piece sets up at the top of sleeve pipe for twine or release third stay cord, angle regulating part sets up in the outside of direction shell for control regulation sheathed tube turned angle.

Further, the outside fixedly connected with shell of direction shell, the driving piece is including rotating gear, worm wheel and the rack of fixed connection on the lifter lateral wall of connecting in the shell, gear and worm wheel coaxial fixed connection, gear and rack meshing, the top of shell rotates and is connected with first band pulley and second band pulley, first band pulley and worm fixed connection, be connected through belt drive between first band pulley and the second band pulley.

Further, the sleeve is sleeved on the middle sliding sleeve of the sleeve, a third positioning bolt is connected to the external thread of the sleeve in a penetrating mode, a third fixed pulley is connected to the bottom of the sleeve in a rotating mode, and a third pull rope penetrates through the sleeve and the third fixed pulley.

Further, the guiding adjusting piece comprises a first sliding frame and a first fixed pulley rotatably connected to the outer portion of the first sliding frame, the first sliding frame is slidably sleeved on the outer portion of the lifting rod, a first positioning bolt is connected in the first sliding frame in a threaded penetrating manner, and the first pull rope is arranged on the outer portion of the first fixed pulley in a penetrating manner.

Further, the winding piece comprises a fixing seat fixedly connected with the sleeve pipe in a synchronous mode, a winding roller rotatably connected in the fixing seat and a ratchet wheel rotatably connected outside the fixing seat, the ratchet wheel is fixedly connected with the winding roller coaxially, a non-return pawl is rotatably connected outside the fixing seat, a spring is fixedly connected to the outside of the non-return pawl, one end of the spring is fixedly connected with the fixing seat, and a pull rod is fixedly connected to the outside of the non-return pawl; one side of the top of the sleeve is also rotationally connected with a fourth fixed pulley, and one end of the third stay cord passes through the fourth fixed pulley and is fixedly connected with the winding roller.

Further, the angle adjusting piece comprises a lifting lug fixedly connected to one side of the bottom of the sleeve, a fixing plate fixedly connected to the outside of the guide shell and a first threaded rod which is in threaded penetrating connection with the fixing plate, the lifting lug is rotationally connected with a pin shaft, the bottom of the pin shaft is fixedly connected with a connecting rod, the bottom of the connecting rod is fixedly connected with a fixing plate, and the threaded rod is rotationally connected with the bottom of the fixing plate.

Further, still rotate in the lifter and be connected with the leading wheel, the outside fixedly connected with fixed frame of lifter, the outside slip cap of fixed frame is equipped with the fourth slip frame, fixedly connected with nut piece in the fourth slip frame, the rotation is connected with the second threaded rod in the fixed frame, second threaded rod and nut piece threaded connection, the outside cover of leading wheel is equipped with the second stay cord, the bottom fixedly connected with connecting block of fourth slip frame, the one end fixedly connected with of connecting block and second stay cord, sheathed tube outside slip cap is equipped with the second slip frame, threaded connection has second positioning bolt in the second slip frame, the bottom rotation of second slip frame is connected with the second fixed pulley, the other end of second stay cord passes behind the second fixed pulley with oversleeve fixed connection.

Further, the outside of oversleeve fixedly connected with magic subsides.

Further, the bottom fixedly connected with base of direction shell, the bottom fixedly connected with multiunit landing leg of base, the bottom rotation of landing leg is connected with the universal wheel.

Further, the bottom of the sleeve is fixedly connected with a hinged plate, and the hinged plate is rotatably connected to the top of the lifting plate.

The beneficial effects of the utility model are as follows:

1. compared with the prior art, the arm is in a stretching and straightening state in the oversleeve through the traction of the first stay cord on the oversleeve, and the arm is driven to be lifted by the oversleeve through the pulling of the third stay cord; then through the setting of angle adjusting part, through the promotion to the sleeve pipe, so realize the rotation of sleeve pipe, then let the sleeve pipe can carry out angle modulation, then drive the third stay cord through the sleeve pipe and carry out angle modulation, just realized controlling and adjusting patient's arm angle of expansion yet, in addition, in the utility model, still through the setting of driving part, can control the height of lifter, in order to satisfy different arm length patient's use.

2. Compared with the prior art, the length of the third stay cord can be controlled and the lifting angle of the arm of the patient can be controlled through the winding or releasing arrangement of the winding piece on the third stay cord.

3. Compared with the prior art, the sleeve can be integrally increased in length by arranging the sleeve, so that the requirements of different conditions can be met.

4. Compared with the prior art, the second stay rope is pulled by the fourth sliding frame through the arrangement of the second stay rope, so that the second stay rope is in a straightened state, and then one end of the second stay rope can pull up the oversleeve; meanwhile, the angle adjustment between the second stay rope and the oversleeve can be realized by adjusting the position of the second sliding frame.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

FIG. 2 is a schematic diagram of an axial structure of the present utility model.

Fig. 3 is a schematic view of the structure of the lifting rod and the sleeve in the present utility model.

Fig. 4 is a schematic view of the gear and worm gear structure in the housing of the present utility model.

Fig. 5 is a schematic view of the structure of the sleeve and the sleeve according to the present utility model.

FIG. 6 is a schematic view of the ratchet wheel of the present utility model.

Fig. 7 is a schematic structural view of a fixing frame in the present utility model.

Marked in the figure as: 1. a guide housing; 2. a base; 3. a support leg; 4. a lifting rod; 5. a fixing plate; 6. a first threaded rod; 7. a fixed plate; 8. lifting lugs; 9. a connecting rod; 10. a rack; 11. a housing; 12. a worm; 13. a worm wheel; 14. a gear; 15. a first pulley; 16. a belt; 17. a second pulley; 18. a first sliding frame; 19. a first positioning bolt; 20. a weight; 21. a first fixed pulley; 22. a first pull rope; 23. a second sliding frame; 24. a second positioning bolt; 25. a second fixed pulley; 26. a second pull rope; 27. a sleeve; 28. a sleeve; 29. a third positioning bolt; 30. a third fixed pulley; 31. a third pull rope; 32. a hinged plate; 33. a fixed frame; 34. a second threaded rod; 35. a fourth sliding frame; 36. a connecting block; 37. a fixing seat; 38. a ratchet wheel; 39. a winding roller; 40. a check pawl; 41. a spring; 42. a guide wheel; 43. a fourth fixed pulley; 44. a sleeve; 45. a magic tape.

Detailed Description

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "front", "upper", "lower", "left", "right", "vertical", "horizontal", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model will be further described with reference to fig. 1-7.

To solve the problems in the background art, the present application provides a retractor.

Example 1

In a specific technical scheme, the device comprises a guide shell 1, a driving piece, a sleeve 27, a guide adjusting piece, a first pull rope 22, a third pull rope 31, a winding piece and an angle adjusting piece.

In order to facilitate movement, the bottom of the guide shell 1 is fixedly connected with a base 2, the bottom of the base 2 is fixedly connected with a plurality of groups of supporting legs 3, and the bottoms of the supporting legs 3 are rotatably connected with universal wheels.

In a specific technical scheme, the lifting rod 4 penetrates through the guide shell 1 and is connected in a sliding manner, and meanwhile, in order to facilitate the control of the lifting rod 4, a driving piece is arranged in the shell 11 and is used for driving the lifting rod 4 to perform vertical linear motion;

the specific design is as follows:

the outside fixedly connected with shell 11 of direction shell 1, the driving piece is including rotating the gear 14 of connecting in shell 11, worm wheel 13 and fixed connection rack 10 on lifter 4 lateral wall, gear 14 and worm wheel 13 coaxial fixed connection, gear 14 and rack 10 meshing, the equal fixedly connected with rack 10 in both ends of lifter 4, the inside both sides of shell 11 are all rotated and are connected with gear 14, and the equal coaxial fixed connection worm wheel 13 in the outside of gear 14, worm wheel 13 is used for driving gear 14 and rotates, then through the meshing of gear 14 and rack 10, so drive lifter 4 makes upward or downward motion.

Further, in order to facilitate the rotation, the top of the housing 11 is rotatably connected with the first belt pulley 15 and the second belt pulley 17, the first belt pulley 15 is fixedly connected with the worm 12, the first belt pulley 15 is in transmission connection with the second belt pulley 17 through the belt 16, and the top of the second belt pulley 17 is fixedly connected with the shaking wheel, so that the shaking wheel is convenient for a user to manually operate and rotate, and when the second belt pulley 17 rotates, the first belt pulley 15 and the worm 12 can be driven to rotate through the transmission of the belt 16, so that the worm wheel 13 is driven to rotate.

In order to facilitate the adjustment of the angle of the sleeve 27, the sleeve 27 is rotatably connected to the top of the lifting plate, specifically, the bottom of the sleeve 27 is fixedly connected with the hinge plate 32, the hinge plate 32 is rotatably connected to the top of the lifting plate, and at the same time, an angle adjusting member is provided at the outside of the guide housing 1 for controlling the rotation angle of the sleeve 27.

The specific design is as follows:

the angle adjusting member in this embodiment includes a lifting lug 8 fixedly connected to a bottom side of the sleeve 27, a fixing plate 5 fixedly connected to the outside of the guide housing 1, and a first threaded rod 6 threaded through-connected in the fixing plate 5.

Wherein, rotate in lug 8 and be connected with the round pin axle, the bottom fixedly connected with connecting rod 9 of round pin axle, the bottom fixedly connected with fixed disk 7 of connecting rod 9, the threaded rod is rotated with the bottom of fixed disk 7 and is connected, be provided with the screw hole in fixed plate 5, and threaded rod and screw hole threaded connection, so realized the screw thread of threaded rod and fixed plate 5, when rotating the threaded rod and going up and down, so can drive fixed disk 7 and lift, then through lug 8 and the cooperation of round pin axle, so can let sleeve pipe 27 pass through hinge plate 32 and rotate, realize the adjustment of angle.

In order to guide the first pull rope 22, the guide adjusting piece is sleeved outside the lifting rod 4, and meanwhile, after the first pull rope 22 passes through the guide adjusting piece, a sleeve 44 is fixedly connected with the first pull rope, and the bottom end of the first pull rope 22 is hung with a weight 20;

wherein, the outside fixedly connected with magic subsides 45 of oversleeve 44, the magic subsides 45 should be including magic hair face subsides and magic hook face subsides, and oversleeve 44 is made for cotton material, through the mutual bonding cooperation of magic hair face subsides and magic hook face subsides, let oversleeve 44 fastening shrink sleeve establish on patient's arm.

The weight 20 is used to pull the first pull cord 22 to keep the first pull cord 22 in a straightened state, so that the arm can be pulled to be straightened in the sleeve 44 by pulling the sleeve 44 by the first pull cord 22.

Specifically, the guide adjuster in the present embodiment includes a first slide frame 18 and a first fixed pulley 21 rotatably connected to the outside of the first slide frame 18.

The first sliding frame 18 is slidably sleeved outside the lifting rod 4, a first positioning bolt 19 is connected in the first sliding frame 18 in a threaded penetrating manner, the first pull rope 22 is arranged outside the first fixed pulley 21 in a penetrating manner, and the first fixed pulley 21 can be driven to adjust the height by slidably adjusting the position of the first sliding frame 18, so that the adjustment of the traction angle of the first pull rope 22 is realized.

In order to pull up the sleeve 44, the third pull cord 31 is fixedly connected to the outside of the sleeve 44 after passing through the sleeve 27, and a winding member is also provided on the top of the sleeve 27 for winding or releasing the third pull cord 31;

the specific design is as follows:

the winding piece comprises a fixed seat 37 fixedly connected with the sleeve 27 in a synchronous way, a winding roller 39 rotatably connected in the fixed seat 37 and a ratchet 38 rotatably connected outside the fixed seat 37, so that the outside of the ratchet 38 is fixedly connected with a rocking wheel for facilitating the rotation of manual operation.

The ratchet 38 and the non-return pawl 40 are common mechanical products in the prior art, and are commercially available, and the ratchet 38 is fixedly connected with the winding roller 39 coaxially, so that the winding roller 39 has a unidirectional clockwise rotation characteristic, and referring to fig. 6 (the non-return pawl 40 has a unidirectional clockwise rotation function only when engaged with the ratchet 38).

Therefore, the outside of the fixed seat 37 is also rotationally connected with the check pawl 40, the outside of the check pawl 40 is fixedly connected with the spring 41, one end of the spring 41 is fixedly connected with the fixed seat 37, the purpose of the spring 41 is to push the check pawl 40 to be tightly meshed with the ratchet 38, and in order to facilitate manual operation and rotation, a pull rod is fixedly connected with the outside of the check pawl 40;

in order to guide the third rope 31, a fourth fixed pulley 43 is rotatably connected to the top side of the sleeve 27, and one end of the third rope 31 passes through the fourth fixed pulley 43 and is fixedly connected to the winding roller 39.

The technical scheme of the winding piece is explained as follows: the ratchet wheel 38 is driven to rotate clockwise by rotating the rocking wheel, referring to fig. 6, the third pull rope 31 can be wound by the winding roller 39, so that the length of the third pull rope 31 is contracted, after the rotation is completed, the rotation is stopped, and the winding roller 39 can not release the pull rope by clamping the check pawl 40 and the ratchet wheel 38; when the pull rope is required to be released, the pull rod is pulled to drive the check pawl 40 to rotate until the check pawl 40 is not meshed with the ratchet wheel 38, then the ratchet wheel 38 loses the unidirectional clockwise rotation function, and the winding roller 39 can rotate along with the rotation, so that the third pull rope 31 is released.

For a full understanding of the technical solutions by those skilled in the art, the present application makes the following overall summary:

when in use, the device is pushed to move aside a patient, then the arm of the patient is sleeved in the sleeve 44, and then the sleeve 44 is fastened and contracted on the arm of the patient through the mutual adhesion of the magic tapes 45;

if the lifting rod 4 is required to be adjusted to drive the sleeve 27 to carry out height adjustment, only the rocking wheel is required to be rotated to drive the second belt pulley 17 to rotate, the first belt pulley 15 is driven to rotate through the cooperation of the belt 16, then the worm 12 is driven to rotate through the first belt pulley 15, the worm 12 drives the worm wheel 13 to rotate, the worm wheel 13 drives the gear 14 to rotate, and the gear 14 is meshed with the rack 10, so that the lifting rod 4 can be driven to be adjusted upwards or downwards; thereby being capable of meeting the requirements of patients with different arm lengths;

then, a weight 20 with proper weight is taken and hung at one end of the first pull rope 22, and the first pull rope 22 can be in a stretched state by the weight of the weight 20, so that the arm can be in a stretched state in the sleeve 44 by pulling the sleeve 44 by the first pull rope 22;

meanwhile, the position of the first sliding frame 18 can be adjusted through sliding, then the angle of the first pull rope 22 is adjusted, and after the adjustment is finished, the first positioning bolt 19 is only required to be rotated to abut against the outer wall of the lifting rod 4, and then the position of the first sliding frame 18 is fixed;

then, the angle of the sleeve 27 needs to be controlled, and then when the lifting angle adjustment of the arm of the patient is realized, only the first threaded rod 6 needs to be rotated, so that the first threaded rod 6 pushes the fixed disc 7 to move upwards or downwards for a certain distance;

then the pin shaft is pushed by the connecting rod 9, and then the lifting lug 8 and the pin shaft are matched, so that one end of the sleeve 27 can be pushed to move, and the sleeve 27 can rotate by a certain angle through the hinged plate 32; then realizing control and adjustment of the arm unfolding angle of the patient;

meanwhile, the length of the third pull rope 31 can be controlled, then the lifting angle of the arm of the patient is controlled, only the rocking wheel is required to be rotated to drive the ratchet 38 to rotate clockwise, and referring to fig. 6, the third pull rope 31 can be wound through the winding roller 39, so that the length of the third pull rope 31 is contracted, then the non-return pawl 40 can be tightly meshed with the ratchet 38 under the interference of the spring 41, the ratchet 38 drives the winding roller 39 to rotate clockwise only in a unidirectional manner, after the rotation is completed, the rotation is stopped, and the winding roller 39 can not release the pull rope through the clamping connection of the non-return pawl 40 and the ratchet 38;

when the pull rope is required to be released, the pull rod is pulled to drive the check pawl 40 to rotate until the check pawl 40 is not meshed with the ratchet wheel 38, then the ratchet wheel 38 loses the unidirectional clockwise rotation function, and the winding roller 39 can rotate along with the rotation, so that the third pull rope 31 is released.

In summary, in the present utility model, the arm is in a stretched and straightened state in the sleeve 44 by pulling the sleeve 44 by the first pull cord 22, and the arm is lifted by the sleeve 44 by pulling the sleeve 44 by the action of the third pull cord 31; then through the setting of angle adjusting part, through the promotion to sleeve pipe 27, so realize the rotation of sleeve pipe 27, then let sleeve pipe 27 can carry out angle modulation, then drive third stay cord 31 through sleeve pipe 27 and carry out angle modulation, just also realized controlling and adjusting patient's arm angle of expansion, in addition, in the utility model, still through the setting of driving part, can control the height of lifter 4, in order to satisfy different arm length patient's use.

Example two

In this embodiment, a sleeve 28 is further sleeved in the middle of the sleeve 27 in a sliding manner for adjusting the length of the device in use, a third positioning bolt 29 is connected to the external thread of the sleeve 27 in a penetrating manner for abutting against to fix the position of the sleeve 28, a third fixed pulley 30 is connected to the bottom of the sleeve 28 in a rotating manner, and a third pull rope 31 passes through the sleeve 28 and the third fixed pulley 30 and is then fixedly connected with a sleeve 44.

The specific explanation is as follows:

if the length of the sleeve 27 needs to be adjusted and increased, the sleeve 28 is pulled to extend, and then the sleeve 28 is pushed against the outer wall of the sleeve 28 by rotating the third positioning bolt 29 after the adjustment is completed, so that the sleeve is fixed.

Example III

The present embodiment differs from the first embodiment in that a guide wheel 42 is also rotatably connected to the lifting lever 4.

The further design is as follows, still be fixedly connected with fixed frame 33 in the outside of lifter 4, the outside slip cap of fixed frame 33 is equipped with fourth slip frame 35, fixedly connected with nut piece in the fourth slip frame 35, rotates in the fixed frame 33 and is connected with second threaded rod 34, second threaded rod 34 and nut piece threaded connection, so when rotating second threaded rod 34, can drive fourth slip frame 35 and slide.

Meanwhile, in this embodiment, the second pull rope 26 is further sleeved outside the guide wheel 42, the bottom of the fourth sliding frame 35 is fixedly connected with the connecting block 36, and the connecting block 36 is fixedly connected with one end of the second pull rope 26, so that when the fourth sliding frame 35 moves, the second pull rope 26 can be pulled to adjust the length through the connecting block 36, however, the other end of the second pull rope 26 passes through the second fixed pulley 25 and is fixedly connected with the sleeve 44, and the sleeve 44 can be pulled and pulled up through the second pull rope 26.

Meanwhile, in order to facilitate guiding adjustment, a second sliding frame 23 is sleeved outside the sleeve 27 in a sliding manner, a second positioning bolt 24 is connected in the second sliding frame 23 in a threaded manner, a second fixed pulley 25 is connected to the bottom of the second sliding frame 23 in a rotating manner, the second positioning bolt 24 is used for abutting to fix the position of the second sliding frame 23, and the second fixed pulley 25 is used for guiding a second pull rope 26.

Specific references are as follows:

the threaded rod can be rotated to drive the fourth sliding frame 35 to slide, the fourth sliding frame 35 pulls one end of the second pull rope 26 through the connecting block 36, so that the second pull rope 26 is in a straightened state, and then one end of the second pull rope 26 can pull up the sleeve 44;

meanwhile, the angle adjustment between the second stay cord 26 and the sleeve 44 can be realized by adjusting the position of the second sliding frame 23;

for example, the second sliding frame 23 may be slid back and forth, then the second pull rope 26 is guided and adjusted by the second fixed pulley 25, and after the adjustment is completed, the position of the second sliding frame 23 may be fixed by rotating the second positioning bolt 24.

The foregoing detailed description of the utility model has been presented for purposes of illustration and description, and it should be understood that the utility model is not limited to the particular embodiments disclosed, but is intended to cover all modifications, equivalents, alternatives, and improvements within the spirit and principles of the utility model.

Claims (10)

1. A retractor, characterized in that: comprising

The guide shell (1) penetrates through the guide shell (1) and is connected with the lifting rod (4) in a sliding manner;

the driving piece is arranged in the shell (11) and is used for driving the lifting rod (4) to perform vertical linear motion;

a sleeve (27), the sleeve (27) is rotatably connected to the top of the lifting plate

The guide adjusting piece is sleeved outside the lifting rod (4);

the first stay cord (22), the first stay cord (22) is fixedly connected with a sleeve (44) after passing through the guide adjusting piece, and the bottom end of the first stay cord (22) is hung with a weight (20);

the third stay cord (31) penetrates through the sleeve (27) and is fixedly connected with the outside of the sleeve (44);

the winding piece is arranged at the top of the sleeve (27) and is used for winding or releasing the third stay cord (31);

and the angle adjusting piece is arranged outside the guide shell (1) and is used for controlling the rotation angle of the adjusting sleeve (27).

2. A retractor according to claim 1, wherein the outer part of the guiding housing (1) is fixedly connected with a housing (11), the driving member comprises a gear (14) rotatably connected in the housing (11), a worm wheel (13) and a rack (10) fixedly connected to the side wall of the lifting rod (4), the gear (14) and the worm wheel (13) are fixedly connected coaxially, the gear (14) is meshed with the rack (10), a first belt wheel (15) and a second belt wheel (17) are rotatably connected to the top of the housing (11), the first belt wheel (15) is fixedly connected with the worm (12), and the first belt wheel (15) and the second belt wheel (17) are in transmission connection through a belt (16).

3. A retractor according to claim 2 wherein the sleeve (27) is provided with a sleeve (28) in the middle sliding sleeve, a third positioning bolt (29) is connected to the sleeve (27) in a threaded manner, a third fixed pulley (30) is connected to the bottom of the sleeve (28) in a rotatable manner, and the third pull cord (31) passes through the sleeve (28) and the third fixed pulley (30).

4. A retractor according to claim 3, wherein the guiding adjusting member comprises a first sliding frame (18) and a first fixed pulley (21) rotatably connected to the outside of the first sliding frame (18), the first sliding frame (18) is slidably sleeved on the outside of the lifting rod (4), a first positioning bolt (19) is connected to the first sliding frame (18) in a threaded penetrating manner, and the first pull rope (22) is arranged on the outside of the first fixed pulley (21) in a penetrating manner.

5. The retractor according to claim 4, wherein the winding member comprises a fixed seat (37) fixedly connected with the sleeve (27) synchronously, a winding roller (39) rotatably connected in the fixed seat (37) and a ratchet wheel (38) rotatably connected outside the fixed seat (37), the ratchet wheel (38) is coaxially and fixedly connected with the winding roller (39), a non-return pawl (40) is rotatably connected outside the fixed seat (37), a spring (41) is fixedly connected outside the non-return pawl (40), one end of the spring (41) is fixedly connected with the fixed seat (37), and a pull rod is fixedly connected outside the non-return pawl (40); one side of the top of the sleeve (27) is also rotatably connected with a fourth fixed pulley (43), and one end of the third stay cord (31) passes through the fourth fixed pulley (43) and is fixedly connected with the winding roller (39).

6. A retractor according to claim 5, wherein the angle adjusting member comprises a lifting lug (8) fixedly connected to one side of the bottom of the sleeve (27), a fixing plate (5) fixedly connected to the outside of the guide shell (1) and a first threaded rod (6) threaded through-connected to the fixing plate (5), the lifting lug (8) is rotatably connected with a pin shaft, the bottom of the pin shaft is fixedly connected with a connecting rod (9), the bottom of the connecting rod (9) is fixedly connected with a fixing disc (7), and the threaded rod is rotatably connected with the bottom of the fixing disc (7).

7. A retractor according to claim 6, wherein the lifting rod (4) is further rotatably connected with a guide wheel (42), a fixed frame (33) is fixedly connected to the outer part of the lifting rod (4), a fourth sliding frame (35) is arranged on the outer sliding sleeve of the fixed frame (33), a nut block is fixedly connected to the fourth sliding frame (35), a second threaded rod (34) is rotatably connected to the fixed frame (33), the second threaded rod (34) is in threaded connection with the nut block, a second pull rope (26) is arranged on the outer sleeve of the guide wheel (42), a connecting block (36) is fixedly connected to the bottom of the fourth sliding frame (35), the connecting block (36) is fixedly connected with one end of the second pull rope (26), a second sliding frame (23) is arranged on the outer sliding sleeve of the sleeve (27), a second positioning bolt (24) is fixedly connected to the second sliding frame (23), a second fixed pulley (25) is rotatably connected to the bottom of the second sliding frame (23), and the other end of the second fixed pulley (26) is fixedly connected to the sleeve (44) after passing through the second fixed pulley.

8. A retractor according to claim 7 wherein the exterior of the sleeve (44) is fixedly connected with a velcro (45).

9. A retractor according to claim 8 wherein the bottom of the guiding housing (1) is fixedly connected with a base (2), the bottom of the base (2) is fixedly connected with a plurality of groups of legs (3), and the bottoms of the legs (3) are rotatably connected with universal wheels.

10. A retractor according to claim 1 wherein the bottom of the sleeve (27) is fixedly connected to a hinged plate (32), the hinged plate (32) being rotatably connected to the top of the lifter plate.