Rope pulling system

Abstract

The present invention relates to the technical field of gear transmission structure, and provides a rope pulling system including: a housing, a rotating shaft arranged on the housing, a handle connected to the rotating shaft, a first gear coaxially arranged on the rotating shaft, a second gear coaxially arranged on the rotating shaft and rotatable relative to the rotating shaft, a first winding wheel transmission-connected with the second gear and coaxially arranged on the rotating shaft and rotatable relative to the rotating shaft, a rod body arranged on the housing and parallel to the rotating shaft, and a third gear coaxially arranged on the rod body and slidable along the rod body; the third gear can slide along the rod body between a first position and a second position; when the third gear is in the first position, the third gear is meshed with the first gear and the second gear respectively; when the third gear is in the second position, the third gear is separated from the second gear. When the third gear slides to the first position, the third gear is meshed with the first gear and the second gear; when the third gear slides to the second position, the third gear is separated from the second gear.

Description

Technical Field

[0001] The present invention belongs to the technical field of gear transmission structure, and more specifically, relates to a rope traction system. Background Art

[0002] In modern equipment, it is often necessary to retract and release the rope. The rope is usually wound on a reel. During the retracting and releasing process, the reel needs to be connected or disconnected with a power source (power source: such as a handle). The reel and the power source are usually transmitted through gears, and the meshing and separation between the gears is very complicated, which seriously affects the retracting and releasing of the rope. Summary of the invention

[0003] The object of the present invention is to provide a rope traction system to solve the technical problem in the prior art that the meshing and separation between gears are very complicated, which seriously affects the retraction and release of the rope.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a rope traction system including: a shell, a rotating shaft arranged on the shell, a handle connected to the rotating shaft, a first gear coaxially arranged on the rotating shaft, a second gear coaxially arranged on the rotating shaft and rotatable relative to the rotating shaft, a first winding wheel transmission-connected to the second gear and coaxially arranged on the rotating shaft and rotatable relative to the rotating shaft, a rod body arranged on the shell and parallel to the rotating shaft, a third gear coaxially arranged on the rod body and slidable along the rod body; the third gear can slide along the rod body between a first position and a second position; when the third gear is located at the first position, the third gear is respectively meshed with the first gear and the second gear; when the third gear is located at the second position, the third gear is separated from the second gear.

[0005] Furthermore, the second gear is provided with a first self-locking mechanism for locking the first winding wheel when the second gear is stationary and the first winding wheel rotates.

[0006] Further, the first self-locking mechanism includes: a first cylinder arranged on the second gear and sleeved on the rotating shaft, a first coil spring sleeved on the first cylinder and in a contracted state, a first columnar cavity arranged on the shell and accommodating the first coil spring, a first slot opened on the side of the first cylinder and extending along the extension direction of the rotating shaft, and a first boss arranged on the first winding wheel and extending into the first slot; the outer surface of the first coil spring abuts against the inner wall of the first columnar cavity, the two ends of the first coil spring are respectively clamped in the first slot, and the two ends of the first coil spring are respectively located on the moving path on the opposite sides of the first boss.

[0007] Further, the first winding wheel is located between the first gear and the second gear.

[0008] Furthermore, it also includes a fourth gear coaxially arranged on the rotating shaft and rotatable relative to the rotating shaft, and a second winding wheel drivingly connected to the fourth gear and coaxially arranged on the rotating shaft and rotatable relative to the rotating shaft; when the third gear is located at the second position, the third gear is respectively engaged with the first gear and the fourth gear; when the third gear is located at the first position, the third gear is separated from the fourth gear.

[0009] Furthermore, the fourth gear is provided with a second self-locking mechanism for locking the second winding wheel when the fourth gear is stationary and the second winding wheel rotates.

[0010] Furthermore, the second self-locking mechanism includes: a second cylinder body arranged on the fourth gear and sleeved on the rotating shaft, a second coil spring sleeved on the second cylinder body and in a contracted state, a second columnar cavity arranged on the shell body and accommodating the second coil spring, a second slot opened on the side of the second cylinder body and extending along the extension direction of the rotating shaft, and a second boss arranged on the second winding wheel and extending into the second slot; the outer surface of the second coil spring is in contact with the inner wall of the second columnar cavity, the two ends of the second coil spring are respectively clamped in the second slot, and the two ends of the second coil spring are respectively located on the moving paths on the opposite sides of the second boss.

[0011] Furthermore, the second winding wheel is located between the first gear and the third gear.

[0012] Further, when the third gear is located at a third position between the first position and the second position, the third gear is meshed with the first gear, the second gear and the fourth gear respectively.

[0013] Furthermore, the shell is provided with a first wire outlet hole for the wire harness on the first winding wheel to pass through, and the shell is provided with a second wire outlet hole for the wire harness on the second winding wheel to pass through.

[0014] The beneficial effects of the rope traction system provided by the present invention are as follows: compared with the prior art, the rope traction system provided by the present invention has a rotating shaft arranged on a shell body and can rotate around the axis of the rotating shaft, the handle can drive the rotating shaft to rotate, a first gear is arranged on the rotating shaft, and the first gear is arranged coaxially with the rotating shaft; a second gear is arranged on the rotating shaft, and the second gear can rotate relative to the rotating shaft; the second gear is connected to the first winding wheel in a transmission manner, and the first winding wheel can be driven to rotate when the second gear rotates, and the wire harness wound on the first winding wheel can be retracted and released when the first winding wheel rotates; a rod body is arranged on the shell body, a third gear is slidably arranged on the rod body, and the third gear is arranged coaxially with the rod body; the third gear The cam is able to slide between a first position and a second position of the rod body; when the third gear slides to the first position, the third gear is respectively meshed with the first gear and the second gear, the rotating shaft drives the first gear to rotate, the first gear drives the third gear to rotate, and the third gear drives the second gear to rotate, that is, the first gear drives the second gear to rotate through the third gear; when the third gear slides to the second position, the third gear is separated from the second gear, and the transmission relationship between the third gear and the second gear is disconnected; the connection and disconnection of the transmission between the first gear and the second gear are very simple; when the first gear drives the second gear to rotate, the second gear drives the first winding wheel to rotate to achieve winding or releasing of the line. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 A three-dimensional schematic diagram of a rope traction system provided in an embodiment of the present invention Figure 1 ;

[0017] Figure 2 A three-dimensional schematic diagram of a rope traction system provided in an embodiment of the present invention Figure 2 ;

[0018] Figure 3 An exploded schematic diagram of a rope traction system provided by an embodiment of the present invention;

[0019] Figure 4 A schematic diagram of the disassembled assembly of a first winding wheel provided in an embodiment of the present invention;

[0020] Figure 5 A schematic diagram of a cross section of the installation axis (axis of the rotating shaft) of a first coil spring provided in an embodiment of the present invention;

[0021] Figure 6 A three-dimensional schematic diagram of a sliding member provided in an embodiment of the present invention;

[0022] Figure 7 A three-dimensional assembly diagram of a first gear, a second gear, and a third gear provided in an embodiment of the present invention;

[0023] Figure 8 A three-dimensional assembly schematic diagram of a fourth gear provided by an embodiment of the present invention being located at a first position;

[0024] Fig. 9 A three-dimensional assembly schematic diagram of a fourth gear provided by an embodiment of the present invention being located at a second position;

[0025] Fig.10 A three-dimensional assembly schematic diagram of a fourth gear provided by an embodiment of the present invention being located at a third position;

[0026] Fig.11 Schematic diagram of the positioning mechanism provided by the embodiment of the present invention Figure 1 ;

[0027] Fig.12 Schematic diagram of the positioning mechanism provided by the embodiment of the present invention Figure 2 ;

[0028] Fig.13 A schematic diagram of the installation of an abutment member provided in an embodiment of the present invention;

[0029] Fig.14 A schematic diagram of the installation of an elastic member provided in an embodiment of the present invention.

[0030] Among them, the reference numerals in the figure are:

[0031] 1-housing; 2-shaft; 31-first gear; 32-second gear; 321-first through hole; 33-third gear; 34-fourth gear; 35-first winding wheel; 36-second winding wheel; 4-rod; 5-sliding member; 51-first baffle; 511-first notch; 52-second baffle; 521-second notch; 53-blind hole; 54-abutment member; 55-elastic member; 56-moving part; 6-seat; 61-recessed part; 71-first cylinder; 711-first slot; 72-first coil spring; 721-first end; 722-second end; 73-first boss; 74-first columnar cavity; 8-handle. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] Please also read Figures 1 to 14 The rope pulling system provided by the present invention is now described. The rope pulling system includes: a housing 1, a rotating shaft 2 arranged on the housing 1, a handle 8 connected to the rotating shaft 2, a first gear 31 coaxially arranged on the rotating shaft 2, a second gear 32 coaxially arranged on the rotating shaft 2 and rotatable relative to the rotating shaft 2, a first winding wheel 35 drivingly connected to the second gear 32 and coaxially arranged on the rotating shaft 2 and rotatable relative to the rotating shaft 2, a rod body 4 arranged on the housing 1 and parallel to the rotating shaft 2, and a third gear 33 coaxially arranged on the rod body 4 and slidable along the rod body 4; the third gear 33 can slide along the rod body 4 between a first position and a second position; when the third gear 33 is in the first position, the third gear 33 is meshed with the first gear 31 and the second gear 32 respectively; when the third gear 33 is in the second position, the third gear 33 is separated from the second gear 32.

[0037] In this way, the rotating shaft 2 is arranged on the shell body 1 and can rotate around the axis of the rotating shaft 2, the handle 8 can drive the rotating shaft 2 to rotate, and a first gear 31 is arranged on the rotating shaft 2, and the first gear 31 is arranged coaxially with the rotating shaft 2; a second gear 32 is arranged on the rotating shaft 2, and the second gear 32 can rotate relative to the rotating shaft 2; the second gear 32 is transmission-connected with the first winding wheel 35, and when the second gear 32 rotates, it can drive the first winding wheel 35 to rotate, and when the first winding wheel 35 rotates, the wire harness wound on the first winding wheel 35 can be retracted and released; a rod body 4 is arranged on the shell body 1, and a third gear 33 is slidably provided on the rod body 4, and the third gear 33 is arranged coaxially with the rod body 4; the third gear 33 can slide between the first position and the second position of the rod body 4; when the third gear 33 is When the gear 33 slides to the first position, the third gear 33 meshes with the first gear 31 and the second gear 32 respectively, the rotating shaft 2 drives the first gear 31 to rotate, the first gear 31 drives the third gear 33 to rotate, and the third gear 33 drives the second gear 32 to rotate, that is, the first gear 31 drives the second gear 32 to rotate through the third gear 33; when the third gear 33 slides to the second position, the third gear 33 is separated from the second gear 32, and the transmission relationship between the third gear 33 and the second gear 32 is disconnected; the connection and disconnection of the transmission between the first gear 31 and the second gear 32 are very simple; when the first gear 31 drives the second gear 32 to rotate, the second gear 32 drives the first winding wheel 35 to rotate to achieve winding or releasing.

[0038] Specifically, in one embodiment, the second gear 32 is transmission-connected with the first winding wheel 35, and the second gear 32 can be directly fixedly connected with the first winding wheel 35. Specifically, in one embodiment, the second gear 32 is transmission-connected with the first winding wheel 35 through any one of a gear, a rod, and a shaft.

[0039] For further information, see Figures 1 to 14 As a specific embodiment of the rope traction system provided by the present invention, a first self-locking mechanism is provided on the second gear 32 for locking the first winding wheel 35 when the second gear 32 is stationary and the first winding wheel 35 is rotating. In this way, when the second gear 32 drives the first winding wheel 35 to rotate, the first winding wheel 35 can rotate freely to realize the retraction and release of the wire harness on the first winding wheel 35; when the second gear 32 stops rotating and the first winding wheel 35 rotates, the first self-locking mechanism locks the first winding wheel 35 to prevent the first winding wheel 35 from rotating, thereby preventing the second winding wheel 36 from rotating freely when the second gear 32 does not rotate.

[0040] For further information, see Figures 1 to 14As a specific embodiment of the rope traction system provided by the present invention, the first self-locking mechanism includes: a first cylinder 71 arranged on the second gear 32 and sleeved on the rotating shaft 2, a first coil spring 72 sleeved on the first cylinder 71 and in a contracted state, a first columnar cavity 74 arranged on the shell 1 and accommodating the first coil spring 72, a first slot 711 opened on the side of the first cylinder 71 and extending along the extension direction of the rotating shaft 2, and a first boss 73 arranged on the first winding wheel 35 and extending into the first slot; the outer surface of the first coil spring 72 is in contact with the inner wall of the first columnar cavity 74, the two ends of the first coil spring 72 are respectively clamped in the first slot 711 and hooked on the two side walls of the first slot 711, and the two ends of the first coil spring 72 are respectively located on the moving path on the opposite sides of the first boss 73. Thus, the second gear 32 is provided with a first cylinder 71, which is coaxially arranged with the second gear 32; a first slot 711 is arranged on the outer surface of the first cylinder 71, and the first slot 711 is arranged along the first cylinder 71 (or the rotating shaft 2). When the first locking nut 72 is in the state of being stretched, the locking nut 77 is in the state of being tightened, and the first and second locking nut 77 are in the state of being tightened. When the first cylinder 71 starts to rotate, the first coil spring 72 is stationary relative to the first cylindrical cavity 74, that is, the first coil spring 72 will not rotate with the first cylinder 71 when the first cylinder 71 starts to rotate (the static friction between the first coil spring 72 and the inner wall of the first cylindrical cavity 74 prevents the first coil spring 72 from rotating with the first cylinder 71); the first cylinder 71 either pulls the first end 721 to move toward the second end 722 to further tighten the first coil spring 72, or the first cylinder 71 pulls the second end 722 to move toward the first end 721 to further tighten the first coil spring 72; the more the first coil spring 72 is tightened, the smaller the outer diameter of the first coil spring 72 is, and the contact force between the first coil spring 72 and the inner wall of the first cylinder 71 is reduced as the first cylinder 71 rotates, until the first cylinder 71 directly pulls the first coil spring 72 to rotate with the first cylinder 71 through the first end 721, or the first cylinder 71 directly pulls the first coil spring 72 to rotate with the first cylinder 71 through the second end 722;When the second gear 32 is not rotated, the first cylinder body 71 is in a stationary state. The first boss 73 located between the first end 721 of the first coil spring 72 and the second end 722 of the first coil spring 72, whether pushing the first end 721 in the direction away from the second end 722 or the first boss 73 pushing the second end 722 in the direction away from the first end 721, increases the distance between the first end 721 and the second end 722, and the first coil spring 72 is stretched. The greater the distance between the first end 721 and the second end 722, the greater the first coil spring 72 is stretched, and the outer diameter of the first coil spring 72 is reduced. Since the first coil spring 72 is pressed against the inner wall of the first cylindrical cavity 74, the stretched first coil spring 72 will contact the inner wall of the first cylindrical cavity 74 more closely, making it difficult for the first coil spring 72 to rotate with the rotation of the first boss 73 and brake the first boss 73. The first boss 73 is provided on the second gear 32, and the first boss 73 naturally brakes the second gear 32. ;

[0041] Optionally, in one embodiment, the second gear 32 is provided with a first through hole 321 communicating with the first slot 711, and the first boss 73 is disposed on the first winding wheel 35 and passes through the first through hole 321 to extend into the first slot 711. In this way, the first through hole 321 can limit the first boss 73.

[0042] For further information, see Figures 1 to 14 As a specific embodiment of the rope traction system provided by the present invention, the first winding wheel 35 is located between the first gear 31 and the second gear 32. In this way, the first winding wheel 35 separates the first gear 31 and the second gear 32, reducing the interference between the first gear 31 and the second gear 32.

[0043] For further information, see Figures 1 to 14As a specific embodiment of the rope traction system provided by the present invention, it also includes a fourth gear 34 coaxially arranged on the rotating shaft 2 and rotatable relative to the rotating shaft 2, and a second winding wheel 36 transmission connected to the fourth gear 34 and coaxially arranged on the rotating shaft 2 and rotatable relative to the rotating shaft 2; when the third gear 33 is in the second position, the third gear 33 is respectively engaged with the first gear 31 and the fourth gear 34; when the third gear 33 is in the first position, the third gear 33 is separated from the fourth gear 34. In this way, when the third gear 33 slides to the second position, the third gear 33 meshes with the first gear 31 and the fourth gear 34, the rotating shaft 2 drives the first gear 31 to rotate, the first gear 31 drives the third gear 33 to rotate, and the third gear 33 drives the fourth gear 34 to rotate, that is, the first gear 31 drives the fourth gear 34 to rotate through the third gear 33; when the third gear 33 slides to the first position, the third gear 33 is separated from the fourth gear 34, and the transmission relationship between the third gear 33 and the fourth gear 34 is disconnected; the connection and disconnection of the transmission between the first gear 31 and the fourth gear 34 is very simple; when the first gear 31 drives the fourth gear 34 to rotate, the fourth gear 34 drives the first winding wheel 35 to rotate to achieve winding or releasing.

[0044] For further information, see Figures 1 to 14 As a specific embodiment of the rope traction system provided by the present invention, the fourth gear 34 is provided with a second self-locking mechanism for locking the second winding wheel 36 when the fourth gear 34 is stationary and the second winding wheel 36 is rotating. In this way, when the fourth gear 34 drives the second winding wheel 36 to rotate, the second winding wheel 36 can rotate freely to realize the retraction and release of the wire harness on the second winding wheel 36; when the fourth gear 34 stops rotating and the second winding wheel 36 rotates, the second self-locking mechanism locks the second winding wheel 36 to prevent the second winding wheel 36 from rotating, thereby preventing the second winding wheel 36 from rotating freely when the fourth gear 34 does not rotate.

[0045] For further information, see Figures 1 to 14As a specific embodiment of the rope traction system provided by the present invention, the second self-locking mechanism includes: a second cylinder body arranged on the fourth gear 34 and sleeved on the rotating shaft 2, a second coil spring sleeved on the second cylinder body and in a contracted state, a second columnar cavity arranged on the shell 1 and accommodating the second coil spring, a second slot opened on the side of the second cylinder body and extending along the extension direction of the rotating shaft 2, and a second boss arranged on the second winding wheel and extending into the second slot; the outer surface of the second coil spring (assuming that the two ends of the second coil spring are the third end and the fourth end respectively) is in contact with the inner wall of the second columnar cavity, the two ends of the second coil spring are respectively clamped in the second slot and hooked on the two side walls of the second slot, and the two ends of the second coil spring are respectively located on the moving path on the opposite sides of the second boss.In this way, a second cylinder is provided on the fourth gear 34, and the second cylinder is coaxially arranged with the fourth gear 34; a second clamping groove is provided on the outer surface of the second cylinder, and the second clamping groove extends along the extension direction of the second cylinder (or the rotating shaft 2); a second coil spring is sleeved on the second cylinder, and the two ends of the second coil spring are respectively clamped in the second clamping groove, and the second coil spring is in a tightened state; the second coil spring is accommodated in the second columnar cavity of the shell, and the outer side wall of the second coil spring abuts against the inner wall of the second columnar cavity; so that when the second coil spring is freely expanded, the outer diameter of the second coil spring is larger than the inner diameter of the second columnar cavity; the two ends of the second coil spring are respectively clamped in the second clamping groove. The gear 34 is arranged in the second slot, and the third end of the second coil spring is hooked on one side wall of the second slot, and the fourth end of the second coil spring is hooked on the other side wall of the second slot; when the fourth gear 34 rotates, the fourth gear 34 drives the second cylinder to rotate. Since the second coil spring is in a tightened state and abuts against the inner wall of the second columnar cavity, the second coil spring is stationary relative to the second columnar cavity when the second cylinder starts to rotate, that is, the second coil spring will not rotate with the second cylinder when the second cylinder starts to rotate (the static friction between the second coil spring and the inner wall of the second columnar cavity prevents the second coil spring from rotating with the second cylinder); the second cylinder either pulls the third coil spring to rotate with the second cylinder. When the second gear 34 does not rotate, the second cylinder is in a stationary state, and the second cam located between the third end of the second coil spring and the fourth end of the second coil spring is rotated. No matter the platform pushes the third end away from the fourth end, or the second boss pushes the fourth end away from the third end, the increased distance between the third end and the fourth end will stretch the second coil spring, and the greater the distance between the third end and the fourth end, the more the second coil spring is stretched, and the smaller the outer diameter of the second coil spring is. Since the second coil spring is in contact with the inner wall of the second cylindrical cavity, the stretched second coil spring will be in closer contact with the inner wall of the second cylindrical cavity, making it difficult for the second coil spring to rotate with the rotation of the second boss and brake the second boss. The second boss is set on the fourth gear 34, and the second boss naturally brakes the fourth gear 34.

[0046] Optionally, in one embodiment, a second through hole connected to the second slot is formed on the fourth gear 34, and the second boss is disposed on the second winding wheel and passes through the second through hole to extend into the second slot. In this way, the second through hole can limit the second boss.

[0047] For further information, see Figures 1 to 14As a specific embodiment of the rope traction system provided by the present invention, the second winding wheel 36 is located between the first gear 31 and the third gear 33. In this way, the first winding wheel 35 separates the first gear 31 and the second gear 32, reducing the interference between the first gear 31 and the second gear 32.

[0048] For further information, see Figures 1 to 14 As a specific embodiment of the rope traction system provided by the present invention, when the third gear 33 is located at a third position between the first position and the second position, the third gear 33 is respectively engaged with the first gear 31, the second gear 32 and the fourth gear 34. In this way, when the third gear 33 slides to the third position, the third gear 33 is respectively engaged with the first gear 31, the second gear 32 and the fourth gear 34, so that the first gear 31 can simultaneously drive the second gear 32 and the fourth gear 34 to rotate through the third gear 33.

[0049] For further information, see Figures 1 to 14 As a specific embodiment of the rope traction system provided by the present invention, a first wire outlet hole is provided on the housing 1 for the wire harness on the first winding wheel 35 to pass through, and a second wire outlet hole is provided on the housing 1 for the wire harness on the second winding wheel 36 to pass through. In this way, the first rope can be wound around the first winding wheel 35 through the first wire outlet hole, and the second rope can be wound around the second winding wheel 36 through the second wire outlet hole, thereby reducing the influence of the external environment on the first winding wheel 35 and the second winding wheel 36.

[0050] Optionally, in one embodiment, the second gear 32 is provided with a first mounting hole, and the second gear 32 is sleeved on the rotating shaft 2 through the first mounting hole; the fourth gear 34 is provided with a second mounting hole, and the fourth gear 34 is sleeved on the rotating shaft 2 through the second mounting hole; and / or the third gear 33 is provided with a third mounting hole, and the third gear 33 is sleeved on the rod body 4 through the third mounting hole. In this way, the second gear 32 is sleeved on the rotating shaft 2 through the first mounting hole, so that the second gear 32 is not easy to be separated from the rotating shaft 2; the fourth gear 34 is sleeved on the rotating shaft 2 through the second mounting hole, so that the fourth gear 34 is not easy to be separated from the rotating shaft 2; the third gear 33 is sleeved on the rod body 4 through the third mounting hole, so that the third gear 33 is not easy to be separated from the rod body 4.

[0051] Specifically, in one embodiment, the rotating shaft 2 is provided with a socket extending in the radial direction of the rotating shaft 2, and the first gear 31 is provided with a slot; a latch is inserted into the socket, and the latch is locked in the slot. In this way, the latch is inserted into the socket, and the latch is locked in the slot on the first gear 31, so that the first gear 31 and the rotating shaft 2 will not rotate relative to each other, and the first gear 31 and the rotating shaft 2 are easy to disassemble from each other, and only the latch stuck in the slot of the first gear 31 needs to be pulled out.

[0052] Specifically, in one embodiment, the first gear 31 is sleeved on the rotating shaft 2 through an assembly hole.

[0053] Specifically, in one embodiment, the first gear 31 is located between the second gear 32 and the fourth gear 34. In this way, the third gear 33 meshing with the first gear 31 can be very conveniently matched with the second gear 32 or the fourth gear 34 respectively.

[0054] Specifically, in one embodiment, the rotating shaft 2 is arranged parallel to the rod body 4. In this way, when the third gear 33 on the rod body 4 slides along the rod body 4, the meshing state between the third gear 33 and the first gear 31 can remain stable.

[0055] Specifically, in one embodiment, the outer diameters of the second gear 32 and the fourth gear 34 are the same, so that the meshing states of the second gear 32 and the fourth gear 34 and the third gear 33 can be more consistent.

[0056] Specifically, in one embodiment, the diameter of the third mounting hole is the same as the outer diameter of the rod body 4. Thus, when the third gear 33 is sleeved on the rod body 4 through the third mounting hole, the third gear 33 and the rod body 4 are not easy to shake each other.

[0057] Specifically, in one embodiment, a positioning mechanism is also included. Specifically, in one embodiment, the positioning mechanism includes: a seat body 6 disposed on the housing 1, a sliding member 5 slidably disposed on the housing 1 along a direction parallel to the extension direction of the rod body 4 and used to toggle the third gear 33, an abutment member 54, and an elastic member 55; a blind hole 53 is disposed on the sliding member 5, the abutment member 54 is slidably disposed in the blind hole 53, and the elastic member 55 is disposed in the blind hole 53; one end of the elastic member 55 abuts against the bottom wall of the blind hole 53, and the other end of the elastic member 55 abuts against the abutment member 54; a plurality of recessed portions 61 are disposed on the seat body 6, and the plurality of recessed portions 61 are sequentially arranged on the sliding path where the abutment member 54 contacts the seat body 6; when the third gear 33 is located at the first position, the abutment member 54 abuts against one recessed portion 61; when the third gear 33 is located at the second position, the abutment member 54 abuts against another recessed portion 61. In this way, the sliding member 5 slides on the shell 1 in a direction parallel to the extending direction of the rod body 4, and the sliding member 5 drives the third gear 33 to slide along the rod body 4 during the sliding process (because the third gear 33 is slidably arranged on the rod body 4, the third gear 33 can be driven as long as the sliding member 5 is located on the moving path of the third gear 33; or the sliding member 5 can also be connected to the third gear 33 to drive the third gear 33); abutment members 54 are slidably arranged in the blind hole 53 on the sliding member 5, and the abutment members 54 abut on the seat body 6 through the elastic member 55 in the blind hole 53; when the sliding member 5 slides, the abutment members 54 contact with the seat body 6 and slide along the surface of the seat body 6; a plurality of recessed portions 61 are provided on the seat body 6, and the plurality of recessed portions 61 are sequentially arranged on the sliding path of the abutment members 54 on the seat body 6, so that the abutment members 54 will be sequentially stuck in the plurality of recessed portions 61 during the sliding process along the surface of the seat body 6; when the abutment members 54 are stuck in any one of the recessed portions 61, the recessed portions 61 The sliding member 5 can be positioned by the abutment 54 to prevent the sliding member 5 from sliding relative to the seat body 6 . When the abutment 54 slides out of the recessed portion 61 , the restriction of the recessed portion 61 on the abutment 54 can be released.

[0058] Optionally, in one embodiment, the sliding member 5 has a toggle portion 56 for a user to toggle by hand, and the blind hole 53 is provided on the toggle portion 56 .

[0059] Optionally, in one embodiment, the predetermined path is a straight line.

[0060] Optionally, in one embodiment, the seat body 6 and the sliding member 5 are respectively metal members.

[0061] Specifically, in one embodiment, the abutment member 54 is spherical, so that the abutment member 54 rotates during the sliding process to reduce the resistance of the abutment member 54 contacting the seat body 6; when the abutment member 54 rolls during the sliding process, it is easy to slide into or out of the recessed portion 61.

[0062] Optionally, in one embodiment, the elastic member 55 is a spring, which is low in cost and easy to install.

[0063] Optionally, in one embodiment, the elastic member 55 is a columnar spring. In this way, the columnar spring can be installed by inserting it into the blind hole 53, which is very convenient.

[0064] Optionally, in one embodiment, the predetermined path extends in a straight line, so that the sliding member 5 is not likely to encounter obstruction during the sliding process.

[0065] Optionally, in one embodiment, the blind hole 53 extends in a straight line, and the extension direction of the blind hole 53 is perpendicular to the predetermined path. Thus, when the abutment member 54 in the blind hole 53 abuts against the seat body 6 and moves along the blind hole 53, the abutment member 54 is not likely to slide relative to the seat body 6.

[0066] Optionally, in one embodiment, there are three recessed portions 61. Thus, when the abutting member 54 is respectively inserted into the three recessed portions 61, the three recessed portions 61 can respectively position the abutting member 54 at three different positions.

[0067] Specifically, in one embodiment, each recessed portion 61 is in the shape of a groove, so that the recessed portion 61 is convenient to process.

[0068] Optionally, in one embodiment, the extending directions of the recessed portions 61 are respectively arranged in parallel. In this way, the state in which the abutment member 54 is inserted into the recessed portions 61 can be kept more consistent.

[0069] Optionally, in one embodiment, any two adjacent recessed portions 61 are in contact with each other. In this way, the abutment member 54 can be inserted into any two adjacent recessed portions 61 in sequence, thereby improving the continuous positioning of the recessed portions 61 on the abutment member 54 .

[0070] Specifically, in one embodiment, the sliding member 5 is provided with a first baffle plate 51 and a second baffle plate 52 respectively located on the sliding path of the third gear 33, and the third gear 33 is located between the first baffle plate 51 and the second baffle plate 52. In this way, the third gear 33 is restricted between the first baffle plate 51 and the second baffle plate 52, which is conducive to maintaining the stability of the position of the third gear 33 relative to the rod body 4; when the sliding member 5 is sliding, the third gear 33 is restricted between the first baffle plate 51 and the second baffle plate 52 and moves with the sliding member 5.

[0071] Specifically, in one embodiment, the first baffle 51 is provided with a first notch 511, and the first baffle 51 is clamped on the rod body 4 through the first notch 511; the second baffle 52 is provided with a second notch 521, and the second baffle 52 is clamped on the rod body 4 through the second notch 521. In this way, the first baffle 51 on the sliding member 5 is clamped on the rod body 4 through the first notch 511, and the second baffle 52 on the sliding member 5 is clamped on the rod body 4 through the second notch 521, so that the sliding member 5 can slide along the rod body 4.

[0072] Specifically, in one embodiment, a limiting hole is provided on the housing 1, and the sliding member 5 is inserted into the limiting hole. In this way, the limiting hole can play a limiting role in the sliding process of the sliding member 5, and the sliding member 5 is inserted into the limiting hole so that the sliding member 5 is not easy to rotate relative to the rod body 4 under the restriction of the limiting hole.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Rope traction system, characterized in that: include: A housing, a rotating shaft arranged on the housing, a handle connected to the rotating shaft, a first gear coaxially arranged on the rotating shaft, a second gear coaxially arranged on the rotating shaft and rotatable relative to the rotating shaft, a first winding wheel drivingly connected to the second gear and coaxially arranged on the rotating shaft and rotatable relative to the rotating shaft, a rod body arranged on the housing and parallel to the rotating shaft, and a third gear coaxially arranged on the rod body and slidable along the rod body; the third gear can slide along the rod body between a first position and a second position; when the third gear is located at the first position, the third gear is meshed with the first gear and the second gear respectively; when the third gear is located at the second position, the third gear is separated from the second gear; It also includes a fourth gear coaxially arranged on the rotating shaft and rotatable relative to the rotating shaft, and a second winding wheel drivingly connected to the fourth gear and coaxially arranged on the rotating shaft and rotatable relative to the rotating shaft; when the third gear is located at the second position, the third gear is respectively engaged with the first gear and the fourth gear; when the third gear is located at the first position, the third gear is separated from the fourth gear.

2. The rope traction system according to claim 1, characterized in that: The second gear is provided with a first self-locking mechanism for locking the first winding wheel when the second gear is stationary and the first winding wheel rotates.

3. The rope traction system according to claim 2, characterized in that: The first self-locking mechanism includes: a first cylinder body arranged on the second gear and sleeved on the rotating shaft, a first coil spring sleeved on the first cylinder body and in a contracted state, a first columnar cavity arranged on the shell body and accommodating the first coil spring, a first clamping groove opened on the side surface of the first cylinder body and extending along the extension direction of the rotating shaft, and a first boss arranged on the first winding wheel and extending into the first clamping groove; the outer surface of the first coil spring is against the inner wall of the first columnar cavity, the two ends of the first coil spring are respectively clamped in the first clamping groove and hooked on the two side walls of the first clamping groove, and the two ends of the first coil spring are respectively located on the moving path on the opposite sides of the first boss.

4. The rope traction system according to claim 3, characterized in that: The first winding wheel is located between the first gear and the second gear.

5. The rope traction system according to claim 1, characterized in that: The fourth gear is provided with a second self-locking mechanism for locking the second winding wheel when the fourth gear is stationary and the second winding wheel rotates.

6. The rope traction system according to claim 5, characterized in that: The second self-locking mechanism includes: a second cylinder body arranged on the fourth gear and sleeved on the rotating shaft, a second coil spring sleeved on the second cylinder body and in a contracted state, a second columnar cavity arranged on the shell body and accommodating the second coil spring, a second slot opened on the side of the second cylinder body and extending along the extension direction of the rotating shaft, and a second boss arranged on the second winding wheel and extending into the second slot; the outer surface of the second coil spring is in contact with the inner wall of the second columnar cavity, the two ends of the second coil spring are respectively clamped in the second slot and hooked on the two side walls of the second slot, and the two ends of the second coil spring are respectively located on the moving path on the opposite sides of the second boss.

7. The rope traction system according to claim 1, characterized in that: The second winding wheel is located between the first gear and the fourth gear.

8. The rope traction system according to claim 1, characterized in that: When the third gear is located at a third position between the first position and the second position, the third gear is meshed with the first gear, the second gear, and the fourth gear respectively.

9. The rope traction system according to claim 1, characterized in that: The housing is provided with a first wire outlet hole for the wire harness on the first winding wheel to pass through, and the housing is provided with a second wire outlet hole for the wire harness on the second winding wheel to pass through.

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