CN117565604A - Weight-adjustable mechanical traction device - Google Patents

Abstract

The invention belongs to the technical field of traction devices, in particular to a weight-adjustable mechanical traction device, which aims at the problems of poor stability and poor applicability in the prior art and adopts the following scheme that the weight-adjustable mechanical traction device comprises a main connecting plate, a connecting screw is rotatably arranged on the main connecting plate, an auxiliary connecting plate is connected onto the connecting screw in a threaded manner, a first connecting hook is rotatably arranged on the main connecting plate, two circular shafts are fixedly arranged on the auxiliary connecting plate, a U-shaped frame is rotatably arranged on the two circular shafts, a second connecting hook is rotatably arranged on the U-shaped frame, anti-falling mechanisms are respectively arranged on the first connecting hook and the second connecting hook, the anti-falling mechanism comprises a vertical plate, a bidirectional screw is rotatably arranged on the vertical plate, a rotary handle is fixedly arranged on the bidirectional screw, and two threaded plates are connected onto the bidirectional screw in a threaded manner.

Description

Weight-adjustable mechanical traction device

Technical Field

The invention relates to the technical field of traction devices, in particular to a weight-adjustable mechanical traction device.

Background

Machines are a general term for machines and mechanisms. Machines are tool devices that help people reduce work difficulty or save effort, and items such as chopsticks, brooms, and tweezers may be referred to as machines, which are simple machines. The complex machine is composed of two or more simple machines. These relatively complex machines are often referred to as machines. From the viewpoints of structure and movement, the mechanism and the machine are not different, and are generally called as machines, such as automobiles, with the development of automobile industry, automobiles on roads are gradually increased, faults sometimes occur in the running process of automobiles, other automobiles are needed to be pulled away, a traction device is needed to be used for pulling away the fault automobile in many cases, the original traction device is inconvenient to combine and cannot be adjusted according to the traction weight, an authorized bulletin number CN111660740B discloses a weight-adjustable mechanical traction device, the problem that the existing traction device is inconvenient to combine and cannot be adjusted according to the traction weight is solved, a scheme is proposed, the traction device comprises a first connecting plate, one side of the first connecting plate is fixedly provided with a first hook, the weight of the device can be adjusted, machines with different weights are drawn, but the device is poor in stability, different connectors cannot be replaced, machines with different connection modes cannot be connected, and the applicability is poor, and the weight-adjustable mechanical traction device is proposed.

Disclosure of Invention

The invention aims to solve the defects of poor stability and poor applicability in the prior art, and provides a weight-adjustable mechanical traction device.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides an adjustable weight's mechanical draw gear, which comprises a main connecting plate, install the connecting screw rod rotatably on the main connecting plate, threaded connection has vice connecting plate on the connecting screw rod, rotate on the main connecting plate and install first connecting hook, fixed mounting has two circular shafts on the vice connecting plate, rotate on two circular shafts and install U-shaped frame, install the second connecting hook rotatably on the U-shaped frame, all be provided with anti-disengaging mechanism on first connecting hook and the second connecting hook, anti-disengaging mechanism's setting can avoid droing, stability is high, anti-disengaging mechanism includes the riser, rotates on the riser and installs bi-directional screw rod, and fixed mounting has the knob on the bi-directional screw rod, threaded connection has two spiral-thread plates on the bi-directional screw rod, all fixed mounting has splint on the two spiral-thread plates, and mutually support has the link, all is provided with the couple on first connecting hook and the second connecting hook, link and couple mutually support, install reinforcing plate and lower reinforcing plate on the main connecting plate rotatably, reinforcing plate and lower reinforcing plate are provided with anti-disengaging mechanism on the riser, and lower reinforcing plate and upper and lower reinforcing plate are provided with the fixed mounting, and fixed mounting has a plurality of fixed mounting on the sliding tube, can be provided with fixed connection seat, fixed mounting has a plurality of fixed connection, fixed mounting on the sliding tube, fixed mounting has a plurality of fixed mounting on the sliding tube, fixed mounting has a fixed mounting on the sliding tube, and fixed mounting has one end, fixed mounting on the sliding tube and fixed mounting. The multiple through holes and the multiple fixed holes are matched with the fixed pin, a cavity is formed in the main connecting plate, an adjusting mechanism is arranged in the cavity, the adjusting mechanism can adjust the effective length of the device and is convenient for traction of the machine, the adjusting mechanism comprises an adjusting wheel, a rotating rod is fixedly arranged on the adjusting wheel, a first bevel gear is fixedly arranged on the rotating rod, a second bevel gear is meshed with the first bevel gear, the second bevel gear is fixedly connected with the connecting screw rod, a threaded hole is formed in the auxiliary connecting plate, a replacement connecting mechanism is arranged in the threaded hole, the replacement connecting mechanism is convenient to connect different machines, the applicability is high, the replacement connecting mechanism comprises a threaded rod, the threaded rod is connected with the threaded hole in a threaded way, a long plate is fixedly arranged on the threaded rod, a long groove is formed in the long groove, a buffer spring is arranged in the long groove, a round plate is slidably arranged in the long groove, a round plate is fixedly arranged on the round plate, a connecting seat is rotatably arranged on the round plate, two jacks are respectively provided with bolts, a pin hole is fixedly arranged on the bolt, an anti-release pin is arranged in the pin hole, a threaded hole is formed in the main connecting plate, a threaded rod is fixedly arranged on the bolt, a support is fixedly arranged on the support tube, a support leg is rotatably arranged on the support tube, a support is rotatably support tube is rotatably arranged on the support tube, a support tube is rotatably support is rotatably arranged on the support tube, and a support tube is rotatably support tube, and a support tube is rotatably support is rotatably arranged on the support tube, and support tube is rotatably support. Be provided with anticollision institution on two auxiliary plates, anticollision institution's setting can protect machinery, avoids mechanical impact damage, anticollision institution includes two joint boards, two joint boards and two auxiliary plate joint, equal fixed mounting has the reed pipe on two joint boards, all is provided with anticollision spring in two reed pipes, equal slidable mounting has the extrusion pipe in two reed pipes, equal fixed mounting has the roof on two extrusion pipes, all is provided with the anticollision pad on two roofs, be provided with four arc poles on the auxiliary connection board, four arc poles mutually support with last gusset plate and lower gusset plate respectively, all be provided with grooved rail in two reed pipes, two grooved rail and two extrusion pipe sliding connection, be provided with the bearing on the main connection board, the inner circle and the bull stick fixed connection of bearing, above-mentioned all rotating parts limit through bearing, pivot or the cooperation of bearing and pivot, ensure that all parts can rotate at specific position stability.

In the invention, the weight-adjustable mechanical traction device has the beneficial effects that: the setting of anticreep mechanism can prevent to drop when first coupling hook or second coupling hook pulls machinery, improve stability, go up the reinforcing plate, the cooperation setting of reinforcing plate and fixed establishment down can strengthen draw gear's intensity, can improve traction weight, adjustment mechanism's setting can adjust effective length, be fit for the traction of different machinery, different machinery can be connected in replacement coupling mechanism's setting, can pull different machinery, the suitability is high, supporting mechanism's setting can support draw gear, conveniently connect, can use manpower sparingly, anticollision institution's setting can be mechanical buffering, protection machinery, avoid mechanical impact damage.

The invention has high stability, high applicability, simple use and convenient operation, and can pull different machines.

Drawings

FIG. 1 is a schematic perspective view of a portion of a mechanical traction device with adjustable weight according to an embodiment of the present invention;

FIG. 2 is a schematic front view of a weight-adjustable mechanical traction device according to the present invention;

FIG. 3 is an enlarged schematic view of the portion A of FIG. 2 of a weight-adjustable mechanical traction device according to the present invention;

FIG. 4 is a schematic structural view of an anti-disengaging mechanism of a weight-adjustable mechanical traction device according to the present invention;

FIG. 5 is a schematic view showing the connection structure of a slide plate, a spring seat, a return spring and a cross plate of a weight-adjustable mechanical traction device according to the present invention;

FIG. 6 is a schematic illustration of a main cross-sectional structure of one attachment of a weight-adjustable mechanical traction device according to the present invention;

FIG. 7 is a schematic illustration of a main cross-sectional structure of another attachment of a weight-adjustable mechanical traction device according to the present invention;

FIG. 8 is a schematic view of an alternative connection mechanism of a weight-adjustable mechanical traction device according to the present invention;

FIG. 9 is a schematic view of an anti-collision mechanism of a weight-adjustable mechanical traction device according to the present invention;

fig. 10 is a schematic partial perspective view of a second embodiment of a weight-adjustable mechanical traction device according to the present invention.

In the figure: 1. a main connecting plate; 2. a connecting screw; 3. an auxiliary connecting plate; 4. a first connecting hook; 5. a circular shaft; 6. a U-shaped frame; 7. a second connecting hook; 8. a riser; 9. a rotary handle; 10. a bidirectional screw; 11. a thread plate; 12. a clamping plate; 13. hanging rings; 14. a hook; 15. an upper reinforcing plate; 16. a lower reinforcing plate; 17. a fixed tube; 18. a slide tube; 19. a slide plate; 20. a spring seat; 21. a return spring; 22. a cross plate; 23. a fixing pin; 24. a through hole; 25. a fixing hole; 26. a cavity; 27. an adjusting wheel; 28. a rotating rod; 29. a first bevel gear; 30. a second bevel gear; 31. a threaded hole; 32. a threaded rod; 33. a long plate; 34. a long groove; 35. a buffer spring; 36. a circular plate; 37. a pull rod; 38. a connecting seat; 39. a jack; 40. a plug pin; 41. a pin plate; 42. pin holes; 43. an anti-drop needle; 44. a support; 45. a shaft lever; 46. a support tube; 47. a support screw; 48. a support leg; 49. a clip; 50. a bolt hole; 51. a bolt; 52. an auxiliary plate; 53. a clamping plate; 54. a reed pipe; 55. an anti-collision spring; 56. extruding the tube; 57. a top plate; 58. a crash pad; 59. an arc-shaped rod; 60. a storage box; 61. a backup pin.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Example 1

Referring to fig. 1-9, a weight-adjustable traction device for machinery comprises a main connecting plate 1, a connecting screw 2 is rotatably mounted on the main connecting plate 1, an auxiliary connecting plate 3 is connected to the connecting screw 2 in a threaded manner, a first connecting hook 4 is rotatably mounted on the main connecting plate 1, two circular shafts 5 are fixedly mounted on the auxiliary connecting plate 3, a U-shaped frame 6 is rotatably mounted on the two circular shafts 5, a second connecting hook 7 is rotatably mounted on the U-shaped frame 6, an anti-falling mechanism is arranged on each of the first connecting hook 4 and the second connecting hook 7, an upper reinforcing plate 15 and a lower reinforcing plate 16 are rotatably mounted on the main connecting plate 1, the upper reinforcing plate 15 and the lower reinforcing plate 16 are mutually matched with the auxiliary connecting plate 3, a fixing mechanism is arranged on the upper reinforcing plate 15 and the lower reinforcing plate 16, a cavity 26 is formed in the main connecting plate 1, an adjusting mechanism is arranged in the cavity 26, a threaded hole 31 is formed in the auxiliary connecting plate 3, a replacement connecting mechanism is arranged in the threaded hole 31, a support 44 is fixedly mounted on the main connecting plate 1, a support mechanism is arranged on the support 44, an auxiliary plate is rotatably mounted on the main connecting plate 1, an auxiliary plate is provided with two plates 52, and an anti-collision mechanism is arranged on the auxiliary plates 52.

Referring to fig. 2, the anti-disengaging mechanism comprises a vertical plate 8, a bidirectional screw rod 10 is rotatably mounted on the vertical plate 8, a rotary handle 9 is fixedly mounted on the bidirectional screw rod 10, two threaded plates 11 are connected to the bidirectional screw rod 10 in a threaded mode, clamping plates 12 are fixedly mounted on the two threaded plates 11, the two clamping plates 12 are matched with each other, a hanging ring 13 is rotatably mounted on the vertical plate 8, hooks 14 are arranged on the first connecting hook 4 and the second connecting hook 7, and the hanging ring 13 is matched with the hooks 14.

In this embodiment, fixed establishment includes fixed pipe 17, fixed pipe 17 and lower gusset plate 16 fixed connection, fixed mounting has slide pipe 18 in the fixed pipe 17, slidable mounting has slide plate 19 on the slide pipe 18, fixed mounting has spring seat 20 on the slide plate 19, be provided with reset spring 21 on the spring seat 20, reset spring 21's one end and slide pipe 18 fixed connection, fixed mounting has diaphragm 22 on the slide plate 19, fixed mounting has fixed pin 23 on the diaphragm 22, a plurality of through-holes 24 have been seted up on the upper gusset plate 15, a plurality of fixed orifices 25 have been seted up on the auxiliary connection board 3, a plurality of through-holes 24 and a plurality of fixed orifices 25 all mutually support with fixed pin 23, lower gusset plate 16 and upper gusset plate 15 cooperation fixed establishment can increase the intensity of device, can increase stability.

In this embodiment, the adjusting mechanism includes an adjusting wheel 27, a rotating rod 28 is fixedly mounted on the adjusting wheel 27, a first bevel gear 29 is fixedly mounted on the rotating rod 28, a second bevel gear 30 is meshed on the first bevel gear 29, and the second bevel gear 30 is fixedly connected with the connecting screw 2.

In this embodiment, the replacement connection mechanism includes a threaded rod 32, the threaded rod 32 is in threaded connection with a threaded hole 31, a long plate 33 is fixedly installed on the threaded rod 32, a long groove 34 is formed on the long plate 33, a buffer spring 35 is arranged in the long groove 34, a circular plate 36 is slidably installed in the long groove 34, a pull rod 37 is fixedly installed on the circular plate 36, a connection seat 38 is rotatably installed on the pull rod 37, two insertion holes 39 are formed in the connection seat 38, a plug pin 40 is arranged in the two insertion holes 39, a pin plate 41 is fixedly installed on the plug pin 40, a pin hole 42 is formed in the plug pin 40, and an anti-falling needle 43 is arranged in the pin hole 42.

In this embodiment, supporting mechanism includes axostylus axostyle 45, axostylus axostyle 45 and support 44 rotate to be connected, fixedly mounted with stay tube 46 on the axostylus axostyle 45, threaded connection has supporting screw 47 on the stay tube 46, install stabilizer blade 48 on the rotation of supporting screw 47, be provided with checkpost 49 on the lower gusset plate 16, checkpost 49 and stabilizer blade 48 joint, four key holes 50 have been seted up on the support 44, be provided with bolt 51 on the stay tube 46, four key holes 50 mutually support with bolt 51, supporting mechanism can support in the bottom of main connecting plate 1, when connecting machinery, only need rotate main connecting plate 1 can connect, need not the manpower and lift up the device, can use manpower sparingly.

In this embodiment, the anti-collision mechanism includes two clamping plates 53, two clamping plates 53 and two auxiliary plates 52 joint, all fixed mounting has reed pipe 54 on two clamping plates 53, all is provided with anti-collision spring 55 in two reed pipes 54, all slidable mounting has extrusion pipe 56 in two reed pipes 54, all fixed mounting has roof 57 on two extrusion pipes 56, all is provided with crashproof pad 58 on two roof 57.

In this embodiment, be provided with four arc poles 59 on the vice connecting plate 3, four arc poles 59 cooperate with last gusset plate 15 and lower gusset plate 16 respectively, and the setting of arc pole 59 can block last gusset plate 15 and lower gusset plate 16, easy to assemble.

In this embodiment, be provided with the bearing on the main connecting plate 1, the inner circle and the bull stick 28 fixed connection of bearing, the bull stick 28 can be made to rotate in fixed position stability in the setting of bearing, is convenient for adjust.

In this embodiment, the two reed pipes 54 are provided with groove rails, the two groove rails are slidably connected with the two extrusion pipes 56, and the arrangement of the groove rails can enable the extrusion pipes 56 to stably slide in the reed pipes 54, so that the reed pipes are convenient for mechanical buffering, and can protect machinery.

In this embodiment, when the traction machine is needed, the supporting screw 47 is rotated to the vertical direction, so that the supporting legs 48 are grounded, the bolts 51 are inserted and fixed, the supporting screw 47 is supported at the bottom of the main connecting plate 1, if the height is insufficient, the supporting screw 47 can be rotated to adjust the height, then the first connecting hook 4 is hung on the tractor, then the hanging ring 13 is hung on the hanging hook 14, the vertical plate 8 is slid to a proper position, the hanging ring 13 is tensioned, the rotating handle 9 is rotated, the bidirectional screw 10 is driven to rotate, the two threaded plates 11 drive the two clamping plates 12 to move and clamp the first connecting hook 4, the falling is avoided, the fixing pin 23 is pulled out, the fixing pin 23 is separated from the through hole 24 and the fixing hole 25, the limit on the auxiliary connecting plate 3 is released, the adjusting wheel 27 is rotated, the rotating rod 28 is driven to rotate, the first bevel gear 29 is driven to rotate, the second bevel gear 30 is driven to rotate, the connecting screw 2 is driven to rotate, the auxiliary connecting plate 3 is driven to move, after the effective length is adjusted, the fixing pin 23 is inserted back to fix, at the moment, the second connecting hook 7 is hung on a machine needing traction, the hanging ring 13 is hung, the falling is prevented, at the moment, the supporting screw 47 is retracted, the supporting legs 48 are clamped in the clamps 49 to fix the supporting legs, traction can be carried out, if machines with different weights are needed to be connected, the second connecting hook 7 can not be hung, the U-shaped frame 6 can be rotated to one side, then the long plate 33 is held by hands, the threaded rod 32 is screwed into the threaded hole 31 to be connected with the auxiliary connecting plate 3, then the anti-falling needle 43 can be pulled out, the plug 40 is inserted into the jack 39 on one side of the connecting seat 38 after the plug 40 is pulled out, traction can be carried out after the anti-falling needle 43 is inserted into the jack 39 on the other side of the connecting seat 38, and connectors of different types can be connected in the same way, in order to avoid that after the traction is finished, the inertial machine continues to advance to strike the traction device, the two auxiliary plates 52 are pulled open, the two clamping plates 53 are clamped on the two auxiliary plates 52, if the machine continues to advance under inertia, the machine can be extruded on the anti-collision pads 58 on the two top plates 57, hard damage can be avoided, meanwhile, the two anti-collision springs 55 can be extruded, at the moment, under the action of the elastic force of the two anti-collision springs 55, the machine can be slowly stopped, so that damage to the machine and the traction device can be avoided, and the safety is high.

Example two

Referring to fig. 10, the present embodiment differs from the first embodiment in that: the storage box 60 is arranged on one side of the main connecting plate 1, a plurality of standby pins 61 are arranged in the storage box 60, if the traction machine is heavy, a plurality of standby pins 61 can be inserted into the through holes 24 and the fixing holes 25, and the main connecting plate 1 and the auxiliary connecting plate 3 are close together, so that the bearing capacity of the traction device can be enhanced, and the traction machine can be better.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (10)

1. The utility model provides a mechanical traction device with adjustable weight, includes main connecting plate (1), its characterized in that, install connecting screw (2) on main connecting plate (1) rotation, threaded connection has vice connecting plate (3) on connecting screw (2), install first connecting hook (4) on main connecting plate (1) rotation, fixed mounting has two circular shaft (5) on vice connecting plate (3), installs U-shaped frame (6) on two circular shaft (5) rotation, install second connecting hook (7) on U-shaped frame (6) rotation, all be provided with anticreep mechanism on first connecting hook (4) and second connecting hook (7), install on main connecting plate (1) rotation and go up reinforcing plate (15) and lower reinforcing plate (16), go up reinforcing plate (15) and lower reinforcing plate (16) all and vice connecting plate (3) mutually support, be provided with fixed establishment on upper reinforcing plate (15) and lower reinforcing plate (16), set up cavity (26) on main connecting plate (1), set up threaded hole (31) on supporting seat (31), set up threaded hole (44) on supporting seat (31), two auxiliary plates (52) are rotatably arranged on the main connecting plate (1), and anti-collision mechanisms are arranged on the two auxiliary plates (52).

2. The weight-adjustable traction device for machinery according to claim 1, wherein the anti-disengaging mechanism comprises a vertical plate (8), a bidirectional screw rod (10) is rotatably mounted on the vertical plate (8), a rotating handle (9) is fixedly mounted on the bidirectional screw rod (10), two threaded plates (11) are connected to the bidirectional screw rod (10) in a threaded mode, clamping plates (12) are fixedly mounted on the two threaded plates (11), the two clamping plates (12) are matched with each other, a hanging ring (13) is rotatably mounted on the vertical plate (8), hooks (14) are arranged on the first connecting hook (4) and the second connecting hook (7), and the hanging ring (13) is matched with the hooks (14).

3. The traction device for the machine with adjustable weight according to claim 1, wherein the fixing mechanism comprises a fixing tube (17), the fixing tube (17) is fixedly connected with the lower reinforcing plate (16), a sliding tube (18) is fixedly installed in the fixing tube (17), a sliding plate (19) is slidably installed on the sliding tube (18), a spring seat (20) is fixedly installed on the sliding plate (19), a return spring (21) is arranged on the spring seat (20), one end of the return spring (21) is fixedly connected with the sliding tube (18), a transverse plate (22) is fixedly installed on the sliding plate (19), a fixing pin (23) is fixedly installed on the transverse plate (22), a plurality of through holes (24) are formed in the upper reinforcing plate (15), a plurality of fixing holes (25) are formed in the auxiliary connecting plate (3), and the plurality of through holes (24) and the plurality of fixing holes (25) are matched with the fixing pin (23).

4. The weight-adjustable mechanical traction device according to claim 1, wherein the adjusting mechanism comprises an adjusting wheel (27), a rotating rod (28) is fixedly arranged on the adjusting wheel (27), a first bevel gear (29) is fixedly arranged on the rotating rod (28), a second bevel gear (30) is meshed on the first bevel gear (29), and the second bevel gear (30) is fixedly connected with the connecting screw (2).

5. The traction device for the machine with adjustable weight according to claim 1, wherein the replacement connection mechanism comprises a threaded rod (32), the threaded rod (32) is in threaded connection with the threaded hole (31), the threaded rod (32) is fixedly provided with a long plate (33), the long plate (33) is provided with a long groove (34), the long groove (34) is internally provided with a buffer spring (35), the long groove (34) is internally provided with a circular plate (36) in a sliding manner, the circular plate (36) is fixedly provided with a pull rod (37), the pull rod (37) is rotatably provided with a connection seat (38), the connection seat (38) is provided with two insertion holes (39), the two insertion holes (39) are internally provided with a bolt (40), the bolt (40) is fixedly provided with a pin plate (41), the bolt (40) is provided with a pin hole (42), and the pin hole (42) is internally provided with a drop-preventing pin (43).

6. The traction device for the machine with adjustable weight according to claim 1, wherein the supporting mechanism comprises a shaft lever (45), the shaft lever (45) is rotationally connected with the support seat (44), a supporting tube (46) is fixedly installed on the shaft lever (45), a supporting screw (47) is connected to the supporting tube (46) in a threaded mode, a supporting leg (48) is rotationally installed on the supporting screw (47), a clamp (49) is arranged on the lower reinforcing plate (16), the clamp (49) is clamped with the supporting leg (48), four bolt holes (50) are formed in the support seat (44), bolts (51) are arranged on the supporting tube (46), and the four bolt holes (50) are matched with the bolts (51).

7. The traction device for the machine with the adjustable weight according to claim 1, wherein the anti-collision mechanism comprises two clamping plates (53), the two clamping plates (53) are clamped with the two auxiliary plates (52), reed pipes (54) are fixedly arranged on the two clamping plates (53), anti-collision springs (55) are arranged in the two reed pipes (54), extrusion pipes (56) are slidably arranged in the two reed pipes (54), top plates (57) are fixedly arranged on the two extrusion pipes (56), and anti-collision pads (58) are arranged on the two top plates (57).

8. The traction device for a machine with adjustable weight according to claim 1, characterized in that the secondary connection plate (3) is provided with four arc-shaped bars (59), the four arc-shaped bars (59) being mutually matched with the upper reinforcement plate (15) and the lower reinforcement plate (16), respectively.

9. The weight-adjustable mechanical traction device according to claim 4, wherein the main connecting plate (1) is provided with a bearing, and an inner ring of the bearing is fixedly connected with the rotating rod (28).

10. The weight-adjustable mechanical traction device according to claim 7, wherein grooved rails are arranged in the two reed pipes (54), and the grooved rails are slidably connected with the two extrusion pipes (56).