A guide mechanism and worm gear winch

Abstract

The present invention discloses a guide mechanism, comprising: a connector, on which a plug-in fixing plate is provided; an elastic anti-slip guide body, which is elastically connected to the connector, and on which an anti-slip guide arc surface is provided to prevent movement, and a guide structure that plays a guiding role and is used to form a reverse meshing structure is connected to the anti-slip guide arc surface; wherein, the guide structure is extended in a free state. Also disclosed is a worm gear winch. The guide mechanism can effectively prevent axial movement during worm transmission, improve the stability of transmission, and ensure a good transmission effect. The worm can be automatically disengaged through the guide structure, and the operation of quickly winding or releasing the belt can be easily achieved. The guide mechanism is integrally stamped and provided with an elastic structure, which can produce a certain deformation, has high strength, is not easy to break, and will not affect the worm gear transmission. At the same time, it is convenient for automatic disengagement, and the operation is time-saving and labor-saving.

Description

Technical Field

[0001] The present invention relates to the field of winches, in particular to a guide mechanism and a worm gear winch. Background Art

[0002] A winch, also known as a hoist, is a small, lightweight lifting device that uses a drum wrapped around a wire rope or chain to lift or pull heavy objects. Winches are widely used due to their versatility, compact structure, small size, light weight, high lifting capacity, and ease of use and transfer.

[0003] For example, when transporting goods by truck, they often need to be tied to prevent them from falling off or colliding with each other while the truck is moving, potentially causing loss or damage. While direct tying with ropes is common, it's time-consuming and labor-intensive, and difficult to secure. Using a winch to tie goods is convenient and safe, making it popular with drivers. Worm gear winches are particularly popular.

[0004] However, the worm gear drive winch in the prior art has the problem of worm gear movement and poor stability during use, which brings great inconvenience to operation. Moreover, the worm gear in the winch is in a meshing state for a long time, which easily leads to a decrease in transmission performance and shortens the service life of the winch.

[0005] For example, a "manual small winch" disclosed in Chinese patent literature, with publication number CN202575797U, includes a housing, a worm, a worm wheel, a transmission shaft, a bearing seat, a roller, and a crank. The worm and worm wheel are installed in the housing, and the worm and worm wheel are connected in a transmission manner. A crank is provided on the outside of the housing, and the crank is connected to the worm. The transmission shaft is fixed to the worm wheel and the roller respectively through positioning keys, and a bearing seat is provided on one side of the roller; one end of the transmission shaft is installed on the housing, and the other end is installed on the bearing seat. The above technical solution also adopts a worm gear drive winch, which has a reasonable structural design and is easy to operate. It can also be manually operated in the absence of a power source, thereby expanding the scope of use and saving energy. However, this technical solution also has problems such as the worm being easy to move and poor stability during use. At the same time, there are problems such as difficulty in quickly winding or unwinding the belt. Summary of the Invention

[0006] The purpose of the present invention is to overcome the problems of the worm gear drive winch in the prior art, such as easy movement of the worm, poor stability, and difficulty in quickly taking up or releasing the belt. The present invention provides a guide mechanism and a winch with the guide mechanism that can effectively prevent the worm from moving, has a good guiding function, and the worm has an automatic disengagement function, which can easily and quickly realize the taking up and releasing of the belt, effectively improve the use strength of the winch and extend its service life, save time and effort in operation, have a simple structure, low cost, and are easy to produce and promote.

[0007] The technical solution adopted by the present invention to achieve the first invention object is: a guide mechanism, comprising:

[0008] A connector, wherein the connector is provided with a plug-in fixing piece;

[0009] The elastic anti-collision guide body is elastically connected to the connecting body. The elastic anti-collision guide body is provided with an anti-collision guide arc surface for preventing movement. The anti-collision guide arc surface is connected to a guide structure that plays a guiding role and is used to form a reverse meshing structure; wherein, the guide structure is extended in a free state.

[0010] The guide mechanism is connected to the housing of the worm gear transmission mechanism by providing a connector, and is limited and fixed by plugging in fixing plates, thereby realizing the installation and positioning of the guide mechanism. An elastic anti-collision guide body is provided in an elastic structure on the connector, and an anti-collision guide arc surface is provided on the elastic anti-collision guide body. The anti-collision guide arc surface is used to prevent axial movement during the worm gear transmission process, which can effectively improve the stability of the worm gear transmission and ensure a good transmission effect. A guide structure is connected to the anti-collision guide arc surface, and the worm can be automatically disengaged through the guide structure. Specifically, since the elastic anti-collision guide body has a certain elasticity and can produce a certain deformation, when the worm needs to withdraw from the meshing with the worm wheel, the worm is reversed, and the tooth top of the worm pushes the anti-collision guide arc surface to move away from the worm, the elastic anti-collision guide body is deformed, and the worm and the guide structure form a reverse meshing structure and withdraw outward along the guide structure, realizing the automatic disengagement operation with the worm wheel. At this time, it is easy to achieve fast belt winding or unwinding operations, and the winch can also be placed in an idling and unstressed state, ensuring the use strength of the worm gear transmission mechanism and effectively improving the service life of the winch. When the worm gear meshing transmission is required, the worm can be quickly pushed forward and meshed with the worm wheel through the guide structure. The guide mechanism is provided with an elastic structure, which can produce a certain deformation, has high strength, is not easy to break, and will not affect the worm gear transmission. At the same time, it is convenient for automatic disengagement, and the operation is time-saving and labor-saving.

[0011] Preferably, the anti-slip guide arc surface is arranged as an inclined arc surface and is inclined toward one side of the guide structure. The anti-slip guide arc surface is arranged as an inclined arc surface in order to prevent slipping while not affecting the transmission of the worm, thereby achieving both anti-slip and transmission effect.

[0012] Preferably, the guide structure includes guide protrusions and guide recesses spaced apart, with a lead-out portion provided at the free end of the guide structure. The guide structure is preferably formed by the guide protrusions and guide recesses, and is used to form a structure that meshes inversely with the worm, thereby achieving smooth disengagement of the worm. The provision of the lead-out portion at the free end of the lead-out structure facilitates disengagement of the worm while also ensuring that the worm can be smoothly advanced into engagement with the worm wheel.

[0013] Preferably, the connector has an overall U-shaped structure, and the plug-in fixing plates are bent horizontally and extend along both sides of the U-shaped wall of the connector. This overall U-shaped structure facilitates connection to the worm gear transmission housing, thereby ensuring elastic deformation of the elastic anti-movement guide, thereby providing both anti-movement and guidance functions.

[0014] Preferably, the elastic anti-channeling guide body and the connector are integrally stamped and formed, and the elastic structure is a slot provided between the elastic anti-channeling guide body and the connector. The integral stamping of the elastic anti-channeling guide body and the connector ensures the strength of the guide mechanism, making it less susceptible to breakage and improving performance. To ensure that the integrally stamped elastic anti-channeling guide body has a certain degree of elasticity, the slot is provided to form an elastic structure. During use, the elastic anti-channeling guide body can deform to a certain extent, thereby achieving both anti-channeling and guiding functions.

[0015] Preferably, the elastic anti-collision guide includes a guide body extending outwardly along one side of the guide body, and an L-shaped position-limiting fixing body extending from the other side of the guide body. The L-shaped position-limiting fixing body and the plug-in fixing piece on the connector form an integrated position-limiting fixing structure, which has good stability and convenient position-limiting fixing.

[0016] The technical solution adopted by the present invention to achieve its second invention purpose is: a worm gear winch, including the guide mechanism, which is elastically movable and cooperates with the worm to form an anti-slip structure and an automatic disengagement reverse meshing structure. The worm gear winch can effectively prevent the axial movement of the worm through the setting of the guide mechanism; when the worm rotates forward, the guide mechanism prevents the axial movement of the worm and does not cause the worm to be disengaged from the worm wheel. When automatic disengagement is required, the worm is reversed, and the worm forms a reverse meshing structure with the guide structure and withdraws outward along the guide structure, realizing automatic disengagement from the worm wheel. At this time, the belt can be easily and quickly wound or unwound, and the winch can also be placed in an idling and unstressed state, ensuring the use strength of the worm gear transmission mechanism and effectively improving the service life of the winch.

[0017] Preferably, the device further comprises a worm gear transmission housing, wherein a T-shaped limit slot is provided on the inner wall of the housing near the worm, the connector on the guide mechanism is inserted into the T-shaped limit slot and fixed in position by a T-shaped crimping fixing block, and the elastic anti-collision guide body freely extends toward the side of the worm and is elastically movable. The T-shaped limit slot provided in the housing facilitates the limit fixation of the connector body and enables the elastic anti-collision to be elastically movable, thereby cooperating with the worm to prevent movement and perform a guiding function.

[0018] Preferably, an elastic movable space is formed between the elastic anti-collision guide and the inner wall of the housing, and a spacing H between the anti-collision guide arc surface on the elastic anti-collision guide and the worm tooth top circle gradually decreases until it contacts the outermost tooth top circle of the worm to form the anti-collision structure; the guide structure on the elastic anti-collision guide engages in reverse with the worm to form the reverse meshing structure. The elastic movable space is formed between the elastic anti-collision guide and the inner wall of the housing, thereby ensuring that the elastic anti-collision guide has sufficient elastic deformation space during the anti-collision and reverse meshing guiding processes.

[0019] Preferably, the machine further includes a winch bracket and a belt take-up shaft rotatably mounted on the winch bracket, the belt take-up shaft being coaxially disposed with the worm gear, and a handwheel with a damping spring being mounted on the belt take-up shaft. During rapid belt reeling or unreeling, the belt rope and the like have a certain amount of resilience. To ensure stability during the reeling or unreeling process, a damping spring is mounted on the handwheel, thereby preventing rebound during the process.

[0020] The beneficial effects of the present invention are as follows: the guide mechanism can effectively prevent axial movement during worm gear transmission, improve the stability of transmission, and ensure a good transmission effect. The guide structure can realize automatic disengagement of the worm, and can easily realize fast belt winding or unwinding operations, and can also make the winch in an idling and unstressed state, thereby ensuring the use strength of the worm gear transmission mechanism and effectively improving the service life of the winch. When a worm gear meshing transmission is required, the worm can be quickly advanced and meshed with the worm wheel through the guide structure. The guide mechanism is integrally stamped and formed, and is provided with an elastic structure, which can produce a certain deformation, has high strength, is not easy to break, and will not affect the worm gear transmission. At the same time, it is convenient for automatic disengagement, and the operation is time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of the guide mechanism of the present invention;

[0022] Figure 2 This is a structural diagram of a guide mechanism and a worm gear in the present invention that cooperate to form an anti-slip structure;

[0023] Figure 3 This is a schematic structural diagram of a reverse meshing structure formed by the cooperation between the guide mechanism and the worm in the present invention;

[0024] Figure 4 This is a schematic diagram of an application structure of the guide mechanism of the present invention;

[0025] Figure 5 This is a structural diagram of the worm gear winch in the present invention;

[0026] Figure 6A schematic structural diagram of a worm gear winch (without the handwheel) in the present invention;

[0027] Figure 7 A schematic structural diagram of the worm gear winch (excluding the housing end cover) in the present invention;

[0028] Figure 8 A schematic structural diagram of the worm gear winch (without the housing end cover) in the present invention from another angle;

[0029] Figure 9 yes Figure 8 Enlarged view of point A in the middle;

[0030] Figure 10 This is a schematic diagram of the structure of the guide mechanism in the present invention when it is installed and cooperates with the worm gear;

[0031] In the figure: 1. Connecting body, 2. Elastic anti-channeling guide body, 3. Guide body, 4. Anti-channeling guide arc surface, 5. Guide structure, 6. Slot, 7. L-shaped limiting fixing body, 8. Guide protrusion, 9. Guide recess, 10. Lead-out part, 11. Plug-in fixing plate, 12. Winch bracket, 13. Box, 14. Worm gear, 15. Worm, 16. Reverse meshing structure, 17. Tape shaft, 18. Handwheel, 19. T-shaped limiting groove, 20. T-shaped crimping fixing block, 21. Elastic activity space, 22. Damping spring, 23. Box end cover, 24. Anti-channeling structure, 25. Worm connecting part. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and through specific examples.

[0033] Example 1:

[0034] exist Figure 1 In the embodiment shown, a guide mechanism includes a connector 1, on which an elastic anti-collision guide body 2 is integrally stamped and formed. The elastic anti-collision guide body 2 includes a guide body body 3, on which an anti-collision guide arc surface 4 for preventing axial movement of the worm and a guide structure 5 for guiding and forming a reverse meshing structure 16 are elastically provided. The guide structure 5 is extended in a free state. A slot 6 forming an elastic structure is provided between the guide body body 3 and the connector 1. An L-shaped limit fixing body 7 is extended along the guide body body 3 in the direction opposite to the anti-collision guide arc surface 4.

[0035] like Figure 2As shown, the anti-channeling guide arc surface 4 is extended outward along the elastic anti-channeling guide body 2, and the arc of the anti-channeling guide arc surface 4 is inclined outward from one end of the elastic anti-channeling guide body 2, and is inclined toward the side of the guide structure 5, so that during use, the distance between the anti-channeling guide arc surface 4 and the worm tooth top circle gradually decreases until it contacts the outermost tooth top circle on the worm.

[0036] like Figure 3 As shown, the guide structure 5 extends outward from the anti-channeling guide arc surface 4 and the contact end of the worm in a free state, and the guide structure 5 is lower than the tooth top line height of the worm when the worm is in normal transmission use, and the guide structure 5 is arranged away from the meshing position of the worm gear. The guide structure 5 includes guide protrusions 8 and guide recesses 9 arranged at intervals, and at least two guide protrusions 8 are provided, and at least one guide recess 9 is provided, wherein one guide protrusion 8 is smoothly connected to the anti-channeling guide arc surface 4 in an arc surface, and the guide protrusion 8 is smoothly connected to the guide recess 9 in an arc surface. In this embodiment, there are two guide protrusions 8 and one guide recess 9, and the guide recess 9 is provided. The guide recess 9 is arranged between the two guide protrusions 8, and the end of the guide protrusion 8 at the free end is provided with a downwardly bent lead-out portion 10. The guide protrusion 8 cooperates with the guide recess 9 and the worm to form a reverse meshing structure 16.

[0037] Since the elastic anti-collision guide body 2 has a certain elasticity and can produce a certain deformation, when the worm needs to exit the meshing with the worm wheel, the worm is reversed, and the tooth top of the worm pushes the anti-collision guide arc surface to move away from the worm, the elastic anti-collision guide body 2 is deformed, and the worm meshes outward along the guide structure 5 and exits. When the meshing with the guide structure 5 is completed, it slides out from the lead-out portion 10, realizing an automatic disengagement operation with the worm wheel, which can easily realize a fast belt winding or unwinding operation, and can also put the winch in an idling and stress-free state, thereby ensuring the use strength of the worm gear transmission mechanism and effectively improving the service life of the winch. When the worm gear meshing transmission is required, the worm is guided into the guide structure through the lead-out portion and then meshes with the worm wheel.

[0038] In this embodiment, the connector 1 is a two-piece U-shaped structure, symmetrically arranged on either side of the elastic anti-slip guide 2. The U-shaped bottom surface of the connector 1 is coplanar with the guide body 3. Plug-in fixing plates 11 are provided on either side of the U-shaped groove of the connector 1, bent horizontally and extending therefrom. The plug-in fixing plate 11, facing away from the guide structure, is integrally formed with the L-shaped limit fixing body 7.

[0039] like Figure 4As shown, when in use, a T-shaped limit groove 19 is provided on the box body 13 of the winch, and the connector 1 on the guide mechanism is inserted into the T-shaped limit groove 19, the plug-in fixing plate 11 on the connector 1 and the L-shaped limit fixing body 7 on the guide body 3 are inserted into the T-shaped limit groove 19, and the U-shaped groove bottom of the connector 1 is set toward the worm 15, and a T-shaped crimping fixing block 20 is inserted between the T-shaped limit groove 19 and the U-shaped groove bottom of the connector 1, which is used to fix and limit the guide mechanism, and the anti-channeling guide arc surface 4 on the guide mechanism extends outward along the elastic anti-channeling guide body 2, and the arc of the anti-channeling guide arc surface 4 is inclined outward from one end of the elastic anti-channeling guide body 2, so that the distance H between the anti-channeling guide arc surface 4 and the worm tooth top circle gradually decreases until it contacts the outermost tooth top circle on the worm.

[0040] The guide structure extends outward from the contact end of the anti-collision guide arc surface 4 with the worm tooth top circle in a free state and is roughly extended along the axial direction of the worm. When the worm is in normal transmission use, the guide structure is lower than the height of the worm tooth top line. The guide structure is set away from the worm gear meshing point, that is, towards one end of the worm connection part 25.

[0041] An elastic movable space 21 is formed between the elastic anti-collision guide body 2 on the guide mechanism and the inner wall of the box body 13, so as to form a deformation space when the worm gear automatically retracts.

[0042] This guide mechanism allows the worm to be disengaged from the worm gear after it is guided through the guide mechanism. At this point, the worm wheel is in an idling state, enabling rapid take-up or take-down operations. When the worm wheel and worm gear require meshing transmission, the worm is screwed inward along the guide mechanism. Because the guide mechanism is provided with a guide portion 10 at the end, the worm can be quickly guided in and meshed with the worm wheel. At the same time, the guide structure allows the worm to be easily and automatically disengaged, making operation convenient and quick. Furthermore, when the worm wheel and worm gear are engaged, the anti-slip guide arc surface 4 prevents the worm from axial movement, ensuring the stability of the meshing and thus achieving stable operation.

[0043] like Figure 5 、 Figure 7 、 Figure 8 、 Figure 10 As shown, a worm gear winch includes the aforementioned guide mechanism, which is elastically movable and cooperates with the worm to form an anti-slip structure 24 and an automatic disengagement reverse engagement structure 16. It also includes a winch bracket 12 arranged in a frame structure, a worm gear transmission housing 13 mounted on the winch bracket 12, and a worm gear transmission mechanism disposed within the housing 13, which rotates a belt winding shaft 17 mounted on the winch bracket.

[0044] The box 13 is arranged on the side of one side of the winch bracket 12. The worm gear transmission mechanism includes a worm wheel 14, a worm 15 and a power mechanism that drives the worm wheel to rotate. The power mechanism can be a manual handwheel or an automatic drive mechanism.

[0045] The belt reel 17 spans the winch bracket 12, and one end of the belt reel 17 is arranged outside the winch bracket 12 on the side away from the box body 13, and a hand wheel 18 is provided on the end of the belt reel to prevent the belt from rotating during the fast belt reeling or unwinding operation in the disengaged state. Figure 6 As shown, a damping spring 22 is installed inside the handwheel and on the winch bracket 12 to prevent the belt from returning due to its elastic force. The other end of the belt take-up shaft 17 is coaxially connected to the worm gear 15 and can be driven to rotate by the worm gear 14, and can also drive the worm gear 14 to rotate. In the automatic disengagement state, the belt take-up shaft 17 can drive the worm gear 14 to rotate idly, realizing rapid belt reeling or unreeling operations.

[0046] One end of the worm 15 extends out of the box body 13, and a worm connecting portion 25 is provided at the extended end. The worm connecting portion 25 can be connected to a manual handwheel to form a manual winch, or can be connected to a driving mechanism to form a power-driven automatic winch.

[0047] like Figure 8 As shown, a T-shaped limit groove 19 is provided on the side of the box body 13 close to the worm 15, the connector 1 on the guide mechanism is inserted into the T-shaped limit groove 19, the plug-in fixing plate 11 on the connector 1 and the L-shaped limit fixing body 7 on the guide body 3 are inserted into the T-shaped limit groove 19, and the U-shaped groove bottom of the connector 1 is arranged toward the worm 15, and a T-shaped crimping fixing block 20 is inserted between the T-shaped limit groove 19 and the U-shaped groove bottom of the connector 1 for fixing and limiting the guide mechanism, and the elastic anti-channeling guide body 2 is freely extended toward the side of the worm 15 and is elastically movable. The anti-channeling guide arc surface 4 on the guide mechanism is extended outward along the elastic anti-channeling guide body 2, and the arc of the anti-channeling guide arc surface 4 is tilted outward from one end of the elastic anti-channeling guide body 2, so that the distance H between the anti-channeling guide arc surface 4 and the worm tooth top circle gradually decreases until it contacts the outermost tooth top circle on the worm. As shown Figure 3 As shown, the guide protrusion 8 cooperates with the guide recess 9 and the worm to form a reverse meshing structure 16 .

[0048] The guide structure extends outward from the contact end of the anti-collision guide arc surface 4 with the worm tooth top circle in a free state and is roughly extended along the axial direction of the worm. When the worm is in normal transmission use, the guide structure is lower than the height of the worm tooth top line. The guide structure is set away from the worm gear meshing point, that is, towards one end of the worm connection part 25.

[0049] like Figure 9As shown, an elastic movable space 21 is formed between the elastic anti-collision guide body 2 on the guide mechanism and the inner wall of the box body 13, so as to form a deformation space when the worm is automatically retracted. Figure 4 As shown, the distance H between the anti-channeling guide cambered surface 4 on the elastic anti-channeling guide body 2 and the worm tooth top circle gradually decreases until it contacts the outermost tooth top circle on the worm to form the anti-channeling structure 24; Figure 3 As shown, the guide structure 5 on the elastic anti-collision guide body 2 is reversely meshed with the worm to form the reverse meshing structure 16.

[0050] In the worm gear winch, the belt shaft 17 is installed on the winch bracket and can rotate on the winch bracket. The belt shaft is driven by the worm gear transmission mechanism to achieve smooth and stable rotation. When the worm gear is out of gear, the belt shaft can be quickly reeled in or unreeled by operating the hand wheel 18.

[0051] This worm gear winch features a compact structure, attractive appearance, and excellent stability. A housing end cap 23 is provided on the side of the housing 13 away from the winch bracket 12. This housing end cap 23 seals the transmission mechanism within the housing, ensuring a clean interior and preventing debris from entering the housing. This ensures greater stability of the worm gear transmission and guide mechanism during use.

[0052] This worm gear winch effectively prevents axial movement of the worm through the provision of a guide mechanism. When the worm is rotating forward, the guide mechanism prevents axial movement of the worm and prevents the worm from disengaging from the worm wheel. When automatic disengagement is required, the worm is reversed, and the worm forms a reverse meshing structure with the guide structure and exits outward along the guide structure, achieving automatic disengagement from the worm wheel. At this time, rapid belt winding or unwinding operations can be easily achieved, and the winch can also be placed in an idling, unstressed state, ensuring the durability of the worm gear transmission mechanism and effectively extending the service life of the winch. In addition, the guide mechanism is integrally stamped and formed, with high strength, low fracture resistance, and good performance. The guide mechanism is provided with an elastic structure with a certain degree of elasticity, which can produce a certain amount of deformation without affecting the worm gear transmission and also facilitates automatic disengagement. The provision of a damping spring at the handwheel prevents back-rotation or rewinding during rapid belt winding or unwinding operations.

[0053] The above embodiment is only a partial embodiment of the present invention, not all embodiments. At the same time, based on the embodiments described in the present invention, all other embodiments obtained by ordinary technicians in this field based on the technical solution of this application without making any creative work should fall within the scope of protection of the present invention.

Claims

1. A guide mechanism, characterized in that: include: A connector (1), wherein the connector (1) is provided with a plug-in fixing piece (11); The elastic anti-collision guide body (2) is elastically connected to the connecting body (1), and the elastic anti-collision guide body (2) is provided with an anti-collision guide arc surface (4) for preventing movement, and the anti-collision guide arc surface (4) is connected to a guide structure (5) that plays a guiding role and is used to form a reverse meshing structure (16); wherein the guide structure (5) is extended in a free state.

2. A guide mechanism according to claim 1, characterized in that: The anti-channeling guide arc surface (4) is arranged in an inclined arc surface and is inclined toward one side of the guide structure (5).

3. The guide mechanism according to claim 1, wherein: The guide structure (5) comprises a guide protrusion (8) and a guide recess (9) arranged at intervals, and a lead-out portion (10) is provided at the free end of the guide structure (5).

4. The guide mechanism according to claim 1, wherein: The connector (1) is in a U-shaped structure as a whole, and the plug-in fixing piece (11) is bent in a horizontal structure and extended on both sides of the U-shaped wall of the connector.

5. The guide mechanism according to claim 1, characterized in that: The elastic anti-channeling guide body (2) and the connecting body (1) are integrally stamped and formed, and the elastic structure is a slot (6) provided between the elastic anti-channeling guide body (2) and the connecting body (1).

6. A guide mechanism according to any one of claims 1 to 5, characterized in that: The elastic anti-collision guide body (2) includes a guide body body (3), the elastic anti-collision guide body (2) is extended outward along one side of the guide body body (3), and an L-shaped limiting fixing body (7) is extended from the other side of the guide body body (3).

7. A worm gear winch, characterized in that: The invention comprises the guide mechanism according to any one of claims 1 to 6, wherein the guide mechanism is elastically movable and cooperates with the worm to form an anti-slip structure (24) and an automatic disengagement reverse engagement structure (16).

8. The worm gear winch according to claim 7, characterized in that: It also includes a worm gear transmission box (13), wherein a T-shaped limit groove (19) is provided on the inner wall of the box (13) near the worm (15), the connector (1) on the guide mechanism is inserted into the T-shaped limit groove (19) and is fixed by a T-shaped crimping fixing block (20), and the elastic anti-channeling guide (2) is freely extended toward the side of the worm (15) and is elastically movable.

9. The worm gear winch according to claim 8, characterized in that: An elastic movable space (21) is formed between the elastic anti-collision guide body (2) and the inner wall of the box body (13); the distance (H) between the anti-collision guide arc surface (4) on the elastic anti-collision guide body (2) and the worm tooth top circle gradually decreases until it contacts the outermost tooth top circle on the worm to form the anti-collision structure (24); the guide structure (5) on the elastic anti-collision guide body (2) is reversely meshed with the worm to form the reverse meshing structure (16).

10. The worm gear winch according to claim 7, characterized in that: It also includes a winch bracket (12) and a belt reel (17) rotatably arranged on the winch bracket (12), wherein the belt reel (17) is coaxially arranged with the worm gear (14), and a hand wheel (18) with a damping spring (22) is arranged on the belt reel (17).

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