Self-locking strainer
The self-locking tensioner is designed to quickly lock ropes, cables, etc. by utilizing rotating components and self-locking structures, solving the problem of complicated operation of existing tensioners and providing a simple and quick installation and removal method.
Patent Information
- Application Number
- CN202423152315.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Existing tensioners are cumbersome to operate, especially for ropes, cables, wire ropes, etc. that require frequent or quick operation, and lack a quick installation and removal connection method.
A self-locking tensioner is designed, which includes a rotating component, a screw and a self-locking structure. By rotating the rotating component, the screws are driven to move toward each other, which drives the self-locking structure to move toward each other, thereby achieving rapid locking of the tensioning object. The clamping space and anti-slip tooth structure in the self-locking structure are used to ensure stability.
It can achieve quick locking without forming a ring structure on the tensioning object itself, is easy to operate, prevents slipping, and is suitable for scenes with frequent or quick operations.
Smart Images
Figure CN223399164U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of rigging, and in particular relates to a self-locking tensioner. Background Art
[0002] A tensioner is a type of rigging used to tighten ropes, chains, or cables. Currently, there are many types of tensioners with varying functions, but most focus on improving the tensioning structure. There have been few improvements to the connection between the tensioner and the object being tensioned. Most use a hook structure, requiring the object to form a loop for attachment, which increases the number of steps required. For objects that require frequent or quick operation (such as ropes, cables, and wire ropes), existing tensioners are cumbersome to operate. Therefore, there is a need for a tensioner that can be quickly installed and removed. Utility Model Content
[0003] The purpose of the embodiments of the present utility model is to provide a self-locking tensioner, aiming to solve the problem of cumbersome operation of the tensioner in the prior art.
[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0005] A self-locking tensioner comprises a rotating assembly, two screws, and two self-locking structures for locking a tensioning object. The threads of the two screws are in opposite directions. One end of the two screws is threadedly connected to the two ends of the rotating assembly, and the other ends of the two screws are connected to the two self-locking structures. The self-locking structures have a clamping space for clamping the tensioning object.
[0006] Rotating the rotating assembly can drive the two screws to move toward each other, thereby driving the two self-locking structures to move toward each other and lock the tensioning object.
[0007] Furthermore, the self-locking structure includes a lock shell, a return torsion spring and a locking block, the lock shell is connected to the screw, the lock shell has a first end and a second end arranged opposite to each other, the first end is rotatably connected to one end of the locking block, and the return torsion spring is connected between the first end and the locking block, and the locking block rotates toward the second end under the torsion force of the return torsion spring so that the clamping space is formed between the other end of the locking block and the second end.
[0008] Furthermore, the locking block has a third end and a fourth end arranged relatively to each other, the third end is connected to the first end, and the fourth end is close to the second end under the torsion force of the return torsion spring, and the fourth end is provided with several anti-slip teeth for clamping and tightening the object.
[0009] Furthermore, in the rotation direction of the locking block under the torsion force of the return torsion spring, the distance between the apex of each anti-slip tooth and the rotation axis of the locking block gradually decreases.
[0010] Furthermore, anti-slip grooves are provided on the inner wall of the second end.
[0011] Furthermore, a rotating wrench is provided on the locking block.
[0012] Furthermore, the rotating assembly includes a handle and a sleeve, the handle is transmission-connected to the sleeve, and both ends of the sleeve are threadedly connected to the two screws respectively.
[0013] Furthermore, a ratchet is provided in the middle of the sleeve, one end of the handle is rotatably sleeved on the sleeve, and the handle is connected to a pawl which is transmission-connected to the ratchet.
[0014] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: a clamping space for clamping a tensioning object is provided in the self-locking structure of the present invention; after the tensioning object passes through the clamping space on the self-locking structure, the tensioning object is clamped by the self-locking structure; the two screws are driven to move toward each other by rotating the rotating assembly, thereby driving the self-locking structure to move toward each other, thereby locking the tensioning object; there is no need to form a ring structure for hanging on the tensioning object itself, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the self-locking tensioner provided by an embodiment of the utility model;
[0016] Figure 2 This is a schematic diagram of the main structure of the self-locking tensioner provided by an embodiment of the utility model;
[0017] Figure 3 yes Figure 1 Schematic diagram of the self-locking structure decomposition;
[0018] Figure 4 It is a structural diagram of placing the tensioned object in the self-locking structure before locking;
[0019] Figure 5 It is a structural diagram after the tensioning object is placed in the self-locking structure and locked.
[0020] The reference numerals in the figures are:
[0021] 1. Rotating assembly; 11. Handle; 12. Sleeve; 13. Ratchet; 14. Pawl; 2. Screw; 20. Circular link; 3. Self-locking structure; 31. Lock housing; 310. Semicircular link; 311. First end; 312. Second end; 32. Reset torsion spring; 33. Locking block; 331. Third end; 332. Fourth end; 333. Anti-slip teeth; 34. Rotating wrench; 4. Clamping space; 5. Accommodating space; 6. Tightening object. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to 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.
[0023] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0024] See Figures 1 to 5 As shown, the present invention provides a self-locking tensioner. The self-locking tensioner includes a rotating assembly 1, two screws 2, and two self-locking structures 3 for locking a tensioning object 6. The two screws 2 have opposite thread directions, one end of each screw 2 is threadedly connected to the two ends of the rotating assembly 1, and the other ends of each screw 2 are connected to the two self-locking structures 3. The self-locking structures 3 have a clamping space 4 for clamping a tensioning object 6 (such as a rope, steel cable, wire rope, etc.). By rotating the rotating assembly 1, the two screws 2 can be driven to move toward or away from each other, thereby driving the two self-locking structures 3 to move toward or away from each other, thereby locking or loosening the tensioning object 6 placed in the clamping space 4.
[0025] As an embodiment, the self-locking structure 3 includes a lock housing 31, a return torsion spring 32, and a locking block 33. The lock housing 31 is connected to the screw rod 2. Specifically, a semicircular chain ring 31020 is provided on one side of the lock housing 31. The end of the screw rod 2 away from the rotating assembly 1 is provided with a circular chain ring 20. The semicircular chain ring 31020 and the circular chain ring 20 are interlocked. The lock housing 31 has a first end 311 and a second end 312 that are arranged opposite to each other. The first end 311 is rotatably connected to one end of the locking block 33, and the return torsion spring 32 is connected between the first end 311 and the locking block 33. The locking block 33 rotates toward the second end 312 under the torsion of the return torsion spring 32, so that a clamping space 4 is formed between the locking block 33 and the second end 312. Figure 3 As shown, in this embodiment, the first end 311 is bent downward at the upper end of the lock shell 31, and the second end 312 is bent upward at the lower end of the lock shell 31, so that a accommodating space 5 for accommodating the locking block 33 is formed on the lock shell 31, and the first end 311 is rotatably connected to the upper end of the locking block 33 through a pin shaft, the pin shaft passes through the center of the return torsion spring 32, and the two ends of the return spring are respectively connected to the first end 311 and the locking block 33, and the locking block 33 is rotated into the accommodating space 5 under the torsion force of the return torsion spring 32, and the lower end of the locking block 33 can be arranged relative to the second end 312, so that the above-mentioned clamping space 4 is formed between the lower end of the locking block 33 and the second end 312.
[0026] As an implementation method, see Figure 3 、 Figure 4 as well as Figure 5As shown, the locking block 33 has a third end 331 and a fourth end 332 disposed opposite each other. The third end 331 is connected to the first end 311. The fourth end 332, under the torsional force of the return torsion spring 32, approaches the second end 312 and can rotate to a position opposite the second end 312 and stop. The rotational travel of the locking block 33 can be limited by a limiter provided in the lock housing 31 or by utilizing the torsional force of the return torsion spring 32 itself to limit the rotational travel of the locking block 33. This limits the rotation of the fourth end 332 to a position opposite the second end 312 and stops thereafter. This allows the clamping space 4 formed between the fourth end 332 and the second end 312 to clamp and secure the tensioning object 6. The fourth end 332 is provided with a plurality of anti-slip teeth 333 for clamping the tensioning object 6. In the direction of rotation of the locking block 33 under the torsion of the return torsion spring 32, the distance between the apex of each anti-slip tooth 333 and the rotation axis of the locking block 33 gradually decreases. As the locking block 33 rotates toward the second end 321 in the torsion direction of the return torsion spring 32, the left anti-slip tooth 333 on the fourth end 332 moves closer to the lower inner bottom wall of the lock housing 31, thereby increasing the depth of the anti-slip tooth 333's engagement with the tensioning object 6, thereby improving the locking effect on the tensioning object 6. In this embodiment, the locking block 33 has a triangular structure, and a rotating wrench 34 is provided on the left side of the locking block 33 to facilitate rotation against the torsion of the return torsion spring 32. The rotating wrench 34 has a side length on one side that is longer than the other side. The end of the third end 331 is arcuate, and the anti-slip tooth 333 is provided on the arcuate end of the third end 331.
[0027] As an embodiment, anti-slip grooves are provided on the inner wall of the second end 312 , so that the friction between the tensioned object 6 and the lock housing 31 can be increased after the tensioned object 6 is placed in the clamping space 4 .
[0028] As an implementation method, see Figure 1 and Figure 2 As shown, the aforementioned rotating assembly 1 includes a handle 11 and a sleeve 12. The handle 11 is in driving connection with the sleeve 12, and the two ends of the sleeve 12 are respectively threadedly connected to the two screws 2. Specifically, a ratchet 13 is provided in the middle of the sleeve 12, and the ratchet 13 is welded to the outer wall of the sleeve 12. One end of the handle 11 is provided with an annular structure, which is rotatably sleeved on the sleeve 12. A pawl 14 is connected to the inner side of the handle 11 via a pin. The pawl 14 is in driving connection with the ratchet 13. Through the transmission mechanism between the ratchet 13 and the pawl 14, the ratchet 13 can be driven to rotate by the pawl 14, thereby driving the sleeve 12 to rotate.
[0029] In summary, when the self-locking tensioner provided by the present invention is used, the locking block 33 is rotated by rotating the wrench 34 to overcome the torsion force of the reset torsion spring 32, so that the locking block 33 is away from the lock housing 31 (such as Figure 4As shown), the end of the object to be tightened 6 is passed through the clamping space 4 and placed in the two lock shells 31. The wrench 34 is loosened and turned. The locking block 33 is reset and locked under the torsion of the reset torsion spring 32. The end of the tensioning object 6 is clamped in the clamping space 4 by the anti-slip teeth 333. The handle 11 is turned, and the ratchet 13 is driven to rotate by the action of the pawl 14, thereby driving the sleeve 12 to rotate. The reverse thread arrangement of the inner wall at both ends of the sleeve 12 causes the two screws 2 to move inward toward each other, driving the two self-locking structures 3 to move inward. At this time, the tensioning object 6 has a tendency to move outward relative to the self-locking structure 3. Under the joint force of the anti-slip teeth 333 and the anti-slip grooves on the tensioning object 6, the tensioning object 6 will drive the locking block 33 to move outward. Due to the arcuate edge and the anti-slip teeth 333 design on the locking block 33, after the locking block 33 moves outward, the anti-slip teeth 333 further squeeze the tensioning object 6, which will further lock the tensioning object 6 (as shown in FIG. Figure 5 As shown), the greater the force, the tighter the lock, which can prevent the tensioning object 6 from slipping. The tensioning object 6 is driven inward by the self-locking structure 3 to achieve a tightening effect, and its operation is convenient.
[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A self-locking tensioner, characterized in that: The invention comprises a rotating assembly, two screws and two self-locking structures for locking a tensioning object, wherein the thread directions of the two screws are opposite, one end of the two screws is respectively threadedly connected to the two ends of the rotating assembly, and the other ends of the two screws are respectively connected to the two self-locking structures, wherein the self-locking structures have a clamping space for clamping the tensioning object; Rotating the rotating assembly can drive the two screws to move toward each other, thereby driving the two self-locking structures to move toward each other and lock the tensioning object; The self-locking structure includes a lock housing, a return torsion spring and a locking block, the lock housing is connected to the screw, the lock housing has a first end and a second end arranged opposite to each other, the first end is rotatably connected to one end of the locking block, and the return torsion spring is connected between the first end and the locking block, and the locking block rotates toward the second end under the torsion force of the return torsion spring, so that the clamping space is formed between the other end of the locking block and the second end; The locking block has a third end and a fourth end that are relatively arranged. The third end is connected to the first end. The fourth end is close to the second end under the torsion force of the return torsion spring. The fourth end is provided with several anti-slip teeth for clamping and tightening the object.
2. The self-locking tensioner according to claim 1, characterized in that: In the rotation direction of the locking block under the torsion force of the return torsion spring, the distance between the apex of each anti-slip tooth and the rotation axis of the locking block gradually decreases.
3. The self-locking tensioner according to claim 1, characterized in that: Anti-slip grooves are provided on the inner wall of the second end.
4. The self-locking tensioner according to claim 1, characterized in that: The locking block is provided with a rotation wrench.
5. The self-locking tensioner according to claim 1, characterized in that: The rotating assembly includes a handle and a sleeve. The handle is transmission-connected to the sleeve. Two ends of the sleeve are respectively threadedly connected to the two screw rods.
6. The self-locking tensioner according to claim 5, characterized in that: A ratchet is provided in the middle of the sleeve, one end of the handle is rotatably sleeved on the sleeve, and the handle is connected to a pawl which is transmission-connected to the ratchet.