A traction winch pulley and method of use thereof

Abstract

This invention discloses a traction winch pulley, including a traction housing with an anchoring port and a traction rope port at its left and right ends, respectively. A rotating shaft is rotatably connected inside the traction housing, and ratchet wheels are connected to both sides of the shaft near the inner wall of the traction housing. Independent and movable pawl assemblies are connected to the front and rear ends of the rotating shaft inside the traction housing. The pawl assemblies engage with the ratchet wheels and are driven by an elastic element to engage or disengage from the ratchet wheels. When the shaft is releasing the line, the two sets of pawl assemblies engage with the corresponding ratchet wheels to lock the shaft. When the shaft is retracting the line, the two sets of pawl assemblies simultaneously disengage from the ratchet teeth, allowing the shaft to rotate freely. When the shaft stops rotating, the two sets of pawl assemblies engage with the ratchet wheels again via the elastic element. The advantages of this invention compared to existing technologies are: it provides an easy-to-operate and reliable locking traction winch pulley and its usage method.

Description

Technical Field

[0001] This invention relates to the field of traction and rescue equipment technology, specifically to a traction winch pulley and its usage method. Background Technology

[0002] Most existing manual winches use a single-sided ratchet and pawl structure, which suffers from insufficient locking reliability, susceptibility to disengagement due to impact loads, heavy weight, and inconvenient operation. While some products incorporate dual pawls, the two sets of pawls operate asynchronously, or the release mechanism is complex, requiring an additional wrench and impacting efficiency. Furthermore, traditional winches typically rely on an external handle for drive, resulting in a lengthy overall structure that is difficult to operate in confined spaces.

[0003] Therefore, there is an urgent need for a traction winch pulley that is compact in structure, reliable in locking, easy to operate, and can achieve integrated driving and releasing through its own guiding components. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned technical defects and provide an easy-to-operate and reliable locking traction winch pulley and its usage method.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is: a traction winch pulley, including a traction shell, wherein the left end and the right end of the traction shell are respectively provided with an anchoring port and a traction rope port; The traction housing is also rotatably connected to a rotating shaft, and ratchet wheels are connected to both sides of the rotating shaft near the inner wall of the traction housing. Independent and movable pawl assemblies are respectively connected to the front and rear ends of the rotating shaft inside the traction housing. The pawl assembly engages with the ratchet and is driven by an elastic element to engage or disengage the ratchet. When the spindle is performing the wire feeding operation, the two sets of pawl assemblies engage with the corresponding ratchet wheels to lock the spindle. When the spindle is taking in the line, both sets of pawl assemblies disengage from the ratchet teeth simultaneously, allowing the spindle to rotate freely. When the shaft stops rotating, the two sets of pawl assemblies engage with the ratchet via elastic elements.

[0006] Preferably, a guide sleeve is also rotatably connected to the traction housing; Each of the ratchet assemblies is rotatably connected within the guide sleeve. When the guide sleeve rotates, it drives the ratchet assemblies connected to it to move synchronously.

[0007] Preferably, the pawl assembly includes a rotating beam and a pawl connected to the rotating beam, and a limiting rod is also protruding from the outer end of the rotating beam; The elastic element is a torsion spring. One end of the torsion spring and the rotating crossbeam are sleeved on the limiting rod, and the other end abuts against the adjacent traction shell or guide sleeve. The length of the limiting rod is greater than the gap between the rotating beam and the inner wall of the traction shell, and also greater than the gap between the rotating beam and the guide sleeve.

[0008] Preferably, the meshing surface of the pawl faces the rotation direction of the corresponding ratchet. When the shaft rotates towards the line feeding direction, the two sets of pawl assemblies respectively mesh with the corresponding ratchet to lock the shaft.

[0009] Preferably, the rotating shaft is provided with a drum section for winding the traction rope. The drum section is located between two ratchet wheels. One end of the traction rope is wound around the drum section, and the other end passes through the traction rope opening and is provided with a hook lock.

[0010] Preferably, the anchoring port is provided with an internal thread, and the internal thread of the anchoring port is connected to an anchoring head.

[0011] Another aspect of the present invention discloses a method for using a traction winch pulley, comprising the following steps: S1: Thread the anchor head into the anchoring port at the left end of the traction shell and fix the anchor head to the external stabilizing support; S2: Secure one end of the traction rope to the drum section of the rotating shaft, and lead the other end out from inside the traction housing through the traction rope opening on the right end, and connect the hook lock at that end; S3: Attach the hook lock to the object being towed; S4: The reciprocating swing guide sleeve drives the pawl assembly inside it to move synchronously, thereby driving the rotating shaft to wind up the drum section and apply traction force to the object being pulled. S5: When the swing guide sleeve stops swinging or the traction object stops moving, the shaft stops rotating, and the two sets of pawl assemblies automatically engage with the corresponding ratchet teeth under the action of the elastic element, locking the shaft and maintaining the current traction state.

[0012] Preferably, it also includes a line feeding operation. When line feeding is required, two limit rods are manually moved simultaneously to overcome the spring force of the torsion spring. The two sets of pawl assemblies disengage from the corresponding ratchet teeth in a synchronous manner, releasing the lock. The rotating shaft rotates to feed the line under the action of external tension. After the line is laid out, the limit bar is released, and the pawl assembly re-engages with the ratchet under the drive of the elastic element, restoring the locked state.

[0013] The advantages of this invention compared to the prior art are: This invention has advantages such as compact structure, simple operation, and safety and reliability; This invention achieves bidirectional synchronous locking by setting double ratchet wheels on both sides of the rotating shaft and cooperating with two independent sets of pawl assemblies at the front and rear, which significantly improves the impact resistance and locking reliability. The drive function is integrated by using the rotating guide sleeve, which eliminates the need for an external handle. The line can be retracted by reciprocating swing, making it suitable for operation in confined spaces. The overall modular design makes it lightweight and strong, suitable for various scenarios such as vehicle rescue and field towing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a traction winch pulley.

[0015] Figure 2 This is a structural schematic diagram of a traction winch pulley from a second perspective.

[0016] Figure 3 This is a structural schematic diagram of a traction winch pulley from a third-person perspective.

[0017] As shown in the figure: 1. Traction shell, 2. Anchorage port, 3. Traction rope port, 4. Rotating shaft, 5. Ratchet, 6. Guide sleeve, 7. Rotating beam, 8. Limiting rod, 9. Pawl, 10. Torsion spring. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings.

[0019] Combined with appendix Figure 1-3 As shown, a traction winch pulley is characterized by comprising a traction shell 1, wherein the left end and the right end of the traction shell 1 are respectively provided with an anchoring port 2 and a traction rope port 3; The traction housing 1 is also rotatably connected to a rotating shaft 4. Ratchets 5 are connected to both sides of the rotating shaft 4 near the inner wall of the traction housing 1. Independent and movable pawl assemblies are respectively connected to the front and rear ends of the rotating shaft 4 within the traction housing 1. The pawl assemblies cooperate with the ratchet 5, and are driven to engage or disengage from the ratchet 5 by an elastic element. When the rotating shaft 4 is releasing the line, the two sets of pawl assemblies engage with the corresponding ratchet 5 to lock the rotating shaft 4. When the rotating shaft 4 is retracting the line, the two sets of pawl assemblies simultaneously disengage from the ratchet 5 teeth, allowing the rotating shaft 4 to rotate freely. When the rotating shaft 4 stops rotating, the two sets of pawl assemblies engage with the ratchet 5 through an elastic element.

[0020] To reduce external dependence and facilitate cable reeling, a guide sleeve 6 is also rotatably connected to the traction housing 1; Each of the ratchet assemblies is rotatably connected within the guide sleeve 6. When the guide sleeve 6 rotates, it drives the ratchet assemblies connected to it to move synchronously.

[0021] The pawl assembly includes a rotating beam 7 and a pawl 9 connected to the rotating beam 7. A limiting rod 8 is also protruding from the outer end of the rotating beam 7. The elastic element is a torsion spring 10. The torsion spring 10 and the rotating crossbeam 7 are connected at one end to the limiting rod 8, and at the other end to the adjacent traction shell 1 or guide sleeve 6. The length of the limiting rod 8 is greater than the gap between the rotating beam 7 and the inner wall of the traction shell 1 and greater than the gap between the rotating beam 7 and the guide sleeve 6. In use, the meshing surface of the pawl 9 is ensured to face the rotation direction of the corresponding ratchet 5. When the rotating shaft 4 rotates in the direction of wire feeding, the two sets of pawl assemblies respectively mesh with the corresponding ratchet 5 to lock the rotating shaft 4.

[0022] In use, the rotating shaft 4 is equipped with a drum section for winding the traction rope. The drum section is located between two ratchet wheels 5. One end of the traction rope is wound around the drum section, and the other end passes through the traction rope opening 3 and is equipped with a hook lock.

[0023] To ensure the anchoring effect, the anchoring port 2 is provided with internal threads, and the anchoring head is connected to the internal thread of the anchoring port 2.

[0024] In specific implementation of the present invention, Includes the following steps: S1: Thread the anchor head into the anchoring port 2 at the left end of the traction shell 1, and fix the anchor head to the external stabilizing support; S2: Fix one end of the traction rope to the drum section of the rotating shaft 4, and lead the other end out from the inside of the traction shell 1 through the traction rope opening 3 on the right end, and connect the hook lock at that end. S3: Attach the hook lock to the object being towed; S4: The reciprocating swing guide sleeve 6 drives the pawl assembly inside it to move synchronously, thereby driving the rotating shaft 4 to wind up the traction rope in the drum section and apply traction force to the traction object. S5: When the guide sleeve 6 stops swinging or the traction object stops moving, the shaft 4 stops rotating, and the two sets of pawl assemblies automatically engage with the corresponding ratchet 5 teeth under the action of the elastic element, locking the shaft 4 and maintaining the current traction state.

[0025] In practical use, it also includes the line feeding operation. When line feeding is required, the two limit rods 8 are manually moved at the same time to overcome the elastic force of the torsion spring 10. The two sets of pawl assemblies are simultaneously disengaged from the corresponding ratchet 5 teeth, and the lock is released. The rotating shaft 4 rotates to feed the line under the action of external tension. After the line is laid out, the limit rod 8 is released, and the pawl assembly re-engages with the ratchet 5 under the drive of the elastic element, restoring the locked state.

[0026] Working principle: In this invention, the rotating shaft is equipped with a double ratchet, with independent pawl assemblies at the front and rear, which are constantly engaged by a torsion spring. During line winding, the reciprocating guide sleeve drives the pawl inside to push the ratchet teeth, driving the rotating shaft to rotate, thus achieving unidirectional line winding. Once the swing stops or the load reverses, the shaft tends to reverse (in the direction of line release), and the pawl immediately engages with the ratchet teeth under the action of the torsion spring, automatically locking the shaft and preventing the rope from coming loose; When laying out the line, manually and simultaneously move the two protruding limit rods to overcome the spring force and make the two sets of pawls disengage from the ratchet at the same time, thus releasing the lock. The shaft can then rotate freely to lay out the line under external tension. After the limit lever is released, the pawl automatically resets and re-engages, restoring the locked state. The entire process requires no handle, relying on the guide sleeve to drive the release of the limit lever, making it easy to operate and use.

[0027] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A traction winch pulley, characterized in that: It includes a traction shell (1), and the left and right ends of the traction shell (1) are respectively provided with an anchoring port (2) and a traction rope port (3). The traction housing (1) is also rotatably connected to a rotating shaft (4), and ratchet wheels (5) are connected to both sides of the rotating shaft (4) near the inner sidewall of the traction housing (1). Independent and movable pawl assemblies are respectively connected to the front and rear ends of the rotating shaft (4) in the traction housing (1). The pawl assembly engages with the ratchet (5) and is driven by an elastic element to engage or disengage the ratchet (5); When the rotating shaft (4) performs the wire feeding, the two sets of pawl assemblies respectively engage with the corresponding ratchet (5) to lock the rotating shaft (4). When the rotating shaft (4) performs the take-up operation, the two sets of pawl assemblies simultaneously disengage from the ratchet (5) teeth, allowing the rotating shaft (4) to rotate freely; When the shaft (4) stops rotating, the two sets of pawl assemblies are driven by the elastic element to engage with the ratchet (5).

2. The traction winch pulley according to claim 1, characterized in that: The traction housing (1) is also rotatably connected to a guide sleeve (6); Each of the ratchet assemblies is rotatably connected inside the guide sleeve (6). When the guide sleeve (6) rotates, it drives the ratchet assembly connected to it to move synchronously.

3. A traction winch pulley according to claim 2, characterized in that: The pawl assembly includes a rotating beam (7) and a pawl (9) connected to the rotating beam (7). A limiting rod (8) is also provided on the outer end of the rotating beam (7). The elastic element is a torsion spring (10). The torsion spring (10) and the rotating crossbeam (7) are connected at one end to the limiting rod (8) and at the other end to the adjacent traction shell (1) or guide sleeve (6). The length of the limiting rod (8) is greater than the gap between the rotating beam (7) and the inner wall of the traction shell (1) and greater than the gap between the rotating beam (7) and the guide sleeve (6).

4. A traction winch pulley according to claim 3, characterized in that: The meshing surface of the pawl (9) faces the rotation direction of the corresponding ratchet (5). When the shaft (4) rotates in the wire feeding direction, the two sets of pawl assemblies respectively mesh with the corresponding ratchet (5) to lock the shaft (4).

5. A traction winch pulley according to claim 1, characterized in that: The rotating shaft (4) is provided with a drum section for winding the traction rope. The drum section is located between two ratchet wheels (5). One end of the traction rope is wound around the drum section, and the other end passes through the traction rope opening (3) and is provided with a hook lock.

6. A traction winch pulley according to claim 5, characterized in that: The anchoring port (2) is provided with an internal thread, and the anchoring port (2) is connected to an anchoring head by the internal thread.

7. A method of using a traction winch pulley according to any one of claims 1-6, characterized in that: Includes the following steps: S1: Thread the anchor head into the anchoring port (2) at the left end of the traction shell (1) and fix the anchor head to the external stabilizing support; S2: Fix one end of the traction rope around the drum section of the rotating shaft (4), and lead the other end out from the inside of the traction shell (1) through the traction rope opening (3) on the right end, and connect the hook lock at that end; S3: Attach the hook lock to the object being towed; S4: The reciprocating swing guide sleeve (6) drives the pawl assembly inside it to move synchronously, thereby driving the rotating shaft (4) to wind up the traction rope in the drum section and apply traction force to the traction object; S5: When the guide sleeve (6) stops swinging or the object being pulled stops moving, the shaft (4) stops rotating, and the two sets of pawl assemblies automatically engage with the corresponding ratchet (5) teeth under the action of the elastic element, locking the shaft (4) and maintaining the current traction state.

8. The method of using a traction winch pulley according to claim 7, characterized in that: It also includes the line feeding operation. When line feeding is required, the two limit rods (8) are manually moved at the same time to overcome the elastic force of the torsion spring (10). The two sets of pawl assemblies are simultaneously disengaged from the corresponding ratchet (5) teeth, the lock is released, and the rotating shaft (4) rotates to feed the line under the action of external tension. After the line is laid out, the limit rod (8) is released, and the pawl assembly re-engages with the ratchet (5) under the drive of the elastic element, restoring the locked state.

Images