Wire and cable tightener

Abstract

The utility model relates to cable installation technical field discloses a kind of electric wire cable tightener, including upper pressing plate and lower pressing plate, the bottom end both sides of upper pressing plate are rotatably connected with rotating rod, the inside of rotating rod is all set up with movable slot, the inside both sides of lower pressing plate are all set up with the slot for rotating rod movement, the inside of slot is all fixedly connected with clamping post, the clamping post is respectively arranged in the inside of corresponding movable slot, the bottom end middle part of upper pressing plate is fixedly connected with ratchet bar, the top of lower pressing plate is equipped with the locking assembly for and ratchet bar cooperation, the bottom end of rotating rod is equipped with clamping assembly. In the utility model, through the linkage structure of upper pressing plate, rotating rod and lower pressing plate, hold and press upper and lower pressing plate can drive clamping block to clamp cable, can be stably locked by locking assembly and ratchet bar cooperation, locking effect is stable, convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of cable installation technology, and in particular to a wire and cable tightening device. Background Technology

[0002] In practical use, power cables often need to be bent and tightened in the middle. Existing cable tightening methods mostly rely on manual binding or screw locking. Manual binding requires workers to manually pull the cable and wrap it with binding tape, which is not only physically demanding and inefficient, but also difficult to control the binding force, which can easily lead to uneven force and cause the cable to loosen later, posing a safety hazard. Screw locking type tighteners require rotating the screw to adjust the clamping degree, which is cumbersome to operate and not easy to disassemble. Usually, power tools are needed to assist in rotating the screw. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a wire and cable tightening device, which aims to improve the stability or convenience of cable tightening in existing technologies.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a wire and cable tensioner, comprising an upper pressure plate and a lower pressure plate, wherein rotating rods are rotatably connected to both sides of the bottom end of the upper pressure plate, and movable grooves are provided inside the rotating rods; slots for the movement of the rotating rods are provided on both sides of the inside of the lower pressure plate, and locking pins are fixedly connected inside the slots; the locking pins are respectively disposed inside the corresponding movable grooves; a ratchet rack is fixedly connected to the middle of the bottom end of the upper pressure plate; a locking assembly for cooperating with the ratchet rack is installed at the top of the lower pressure plate; and a clamping assembly is installed at the bottom end of the rotating rods.

[0005] As a further description of the above technical solution: The lower pressure plate has a through groove located below the ratchet rack.

[0006] As a further description of the above technical solution: The locking assembly includes a fixing block fixedly connected to the top of the lower pressure plate. The inner wall of the fixing block is provided with a sliding groove. A movable tooth is slidably connected inside the sliding groove. A pull rod is fixedly connected to the end of the movable tooth. A spring is installed inside the sliding groove corresponding to the periphery of the pull rod.

[0007] As a further description of the above technical solution: The end of the pull rod passes through the fixing block and is fixedly connected to a stop block.

[0008] As a further description of the above technical solution: The clamping assembly includes a clamping block fixedly connected to the bottom end of the rotating rod, and each clamping block has a semi-circular groove inside.

[0009] As a further description of the above technical solution: The inner wall of each semi-circular groove is provided with multiple protrusions.

[0010] This utility model has the following beneficial effects: In this invention, the linkage structure of the upper pressure plate, rotating rod and lower pressure plate allows the clamping block to clamp the cable by gripping the upper and lower pressure plates. The locking component and ratchet rack work together to lock the cable securely and prevent loosening. The cable tightening operation can be completed quickly. Furthermore, the locking component can be unlocked and disassembled quickly, which greatly improves work efficiency and flexibility of use. Attached Figure Description

[0011] Figure 1 This is a perspective view of a wire and cable tightening device proposed in this utility model; Figure 2 This is a schematic diagram of the internal structure of the pressure rod of a wire and cable tightener proposed in this utility model; Figure 3 This is a schematic diagram of the locking assembly structure of a wire and cable tightener proposed in this utility model.

[0012] Legend: 1. Upper pressure plate; 2. Rotating rod; 3. Movable groove; 4. Slot; 5. Clamping block; 6. Protrusion; 7. Lower pressure plate; 8. Fixing block; 9. Ratchet; 10. Locking post; 11. Through groove; 12. Sliding groove; 13. Movable tooth; 14. Pull rod; 15. Spring; 16. Stop block. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] To further understand the contents of this utility model, a detailed description of this utility model will be provided with reference to the accompanying drawings.

[0015] Reference Figure 1-3This utility model provides an embodiment of a wire and cable tightening device, including an upper pressure plate 1 and a lower pressure plate 7. Rotating rods 2 are rotatably connected to both sides of the bottom end of the upper pressure plate 1. Movable grooves 3 are formed inside each of the rotating rods 2. Slots 4 for the movement of the rotating rods 2 are formed on both sides of the interior of the lower pressure plate 7. Locking posts 10 are fixedly connected inside each of the slots 4, and are respectively disposed inside the corresponding movable grooves 3. A ratchet rack 9 is fixedly connected to the middle of the bottom end of the upper pressure plate 1. A locking assembly for cooperating with the ratchet rack 9 is installed at the top of the lower pressure plate 7. A clamping assembly is installed at the bottom end of the rotating rods 2. A through groove 11 is formed inside the lower pressure plate 7 corresponding to the area below the ratchet rack 9.

[0016] Specifically, when the operator grips the upper pressure plate 1 and the lower pressure plate 7, the lower pressure plate 7 moves upward, causing the locking pin 10 to slide along the movable groove 3, which in turn pushes the rotating rod 2 to rotate around the connection point at the bottom of the upper pressure plate 1. Finally, the clamping component at the bottom of the rotating rod 2 moves towards the center, thus clamping the cable. At the same time, the ratchet 9 at the bottom of the upper pressure plate 1 cooperates with the locking component of the lower pressure plate 7 to lock the relative position of the two after clamping, preventing the lower pressure plate 7 from falling back due to the reaction force of the cable. This solves the problem of easy loosening after clamping by traditional tighteners. The overall structure achieves stable cable tightening through mechanical linkage, which is convenient to operate and highly reliable. The design of the through groove 11 is mainly to provide sufficient space for the relative movement of the ratchet 9: when gripping the upper pressure plate 1 and the lower pressure plate 7, the upper pressure plate 1 will drive the ratchet 9 to move downward relative to the lower pressure plate 7.

[0017] The locking assembly includes a fixing block 8 fixedly connected to the top of the lower pressure plate 7. The inner wall of the fixing block 8 is provided with a sliding groove 12. A movable tooth 13 is slidably connected inside the sliding groove 12. A pull rod 14 is fixedly connected to the end of the movable tooth 13. A spring 15 is installed inside the sliding groove 12 corresponding to the outer periphery of the pull rod 14. The end of the pull rod 14 passes through the fixing block 8 and is fixedly connected to a stop block 16.

[0018] Specifically, the fixing block 8 serves as the mounting base for the locking assembly. Its inner wall groove 12 provides a precise sliding track for the movable tooth 13, ensuring that the movable tooth 13 can only move vertically, preventing deviation from affecting the engagement with the ratchet rack 9. When the spring 15 is in its natural state, it exerts an elastic thrust on the movable tooth 13 towards the ratchet rack 9, causing the movable tooth 13 to tightly engage with the tooth groove of the ratchet rack 9, thereby locking the position of the ratchet rack 9. Even when the lower pressure plate 7 is subjected to downward force after the cable is clamped, the locking mechanism remains secure. With force, the movable tooth 13 can also be locked in the groove of the ratchet 9, preventing the lower pressure plate 7 from falling back and ensuring stable clamping of the cable. The design of the pull rod 14 facilitates the release of the lock. When it is necessary to disassemble the device, pulling the pull rod 14 outward can drive the movable tooth 13 to compress the spring 15 and disengage from the groove of the ratchet 9, quickly releasing the locked state. The stop block 16 at the end of the pull rod 14 can prevent the pull rod 14 from falling out of the slide groove 12 of the fixed block 8 when the pull rod 14 is pulled, improving the structural reliability of the locking assembly.

[0019] The clamping assembly includes a clamping block 5 fixedly connected to the bottom end of the rotating rod 2. The inside of the clamping block 5 is provided with a semi-circular groove; the inner wall of the semi-circular groove is provided with multiple protrusions 6.

[0020] Specifically, the clamping block 5 is fixed to the bottom of the rotating rod 2. Its internal semi-circular groove conforms to the cylindrical shape of the wire and cable. Compared with the planar clamping structure, it can increase the contact area between the clamping block 5 and the cable, so that the clamping force is applied to the cable more evenly, avoiding damage to the cable insulation layer due to excessive local pressure. At the same time, the semi-circular groove has stronger adaptability and can be compatible with wires and cables of different diameters without replacing the clamping parts, thus improving the versatility of the device. The multiple protrusions 6 on the inner wall of the groove can significantly increase the friction between the clamping block 5 and the cable. When the clamping block 5 moves towards the center to clamp the cable, the protrusions 6 will embed into the surface of the cable without damaging the insulation layer, effectively preventing the cable from sliding or shifting during the tightening process. This ensures that the cable is always in the clamping center position, avoiding poor tightening effect due to slippage, or even the safety hazard of cable falling off, further improving the stability of the device's clamping and the safety of operation.

[0021] Working principle: During operation, the power cable to be tightened is first placed in the semi-circular groove of the clamping block 5 at the bottom of the rotating rod 2. The protrusions 6 on the inner wall of the semi-circular groove of the clamping block 5 can increase the friction between the cable and the clamping block 5, preventing the cable from slipping during tightening. By gripping the upper pressure plate 1 and the lower pressure plate 7, when the lower pressure plate 7 moves upward, the locking pins 10 fixed in the slots 4 on both sides inside it will move upward simultaneously. The locking pins 10 will slide along the movable groove 3 opened inside the rotating rod 2. Since the top of the rotating rod 2 is rotatably connected to the bottom sides of the upper pressure plate 1, the upward sliding of the locking pins 10 will drive the rotating rod 2 to rotate around its connection point with the upper pressure plate 1. The rotation causes the clamping block 5 at the bottom of the rotating rod 2 to move closer to the center, forming a clamping force on the cable. At the same time, the lower pressure plate 7 continues to move upward, and the ratchet 9 fixed at the bottom center of the upper pressure plate 1 will move downward relative to it. The movable teeth 13 in the sliding groove 12 on the inner wall of the fixed block 8 at the top of the lower pressure plate 7 will be tightly engaged with the ratchet 9 under the elastic thrust of the spring 15, thereby locking the position of the ratchet 9 and preventing the lower pressure plate 7 from falling back, ensuring the stable clamping of the cable. In addition, the through groove 11 opened inside the lower pressure plate 7 corresponding to the bottom of the ratchet 9 can provide sufficient space for the relative movement of the ratchet 9 and prevent structural interference. If disassembly is required, pull the lever 14 to drive the movable tooth 13 to compress the spring 15 and disengage it from the ratchet rack 9. After unlocking, push down the pressure plate 7 to complete the disassembly.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wire and cable tensioner, comprising an upper pressure plate (1) and a lower pressure plate (7), characterized in that: The upper pressure plate (1) has rotating rods (2) rotatably connected to both sides of its bottom end. The rotating rods (2) have movable slots (3) inside. The lower pressure plate (7) has slots (4) for the rotating rods (2) to move on both sides. The slots (4) are fixedly connected to locking pins (10). The locking pins (10) are respectively set inside the corresponding movable slots (3). The upper pressure plate (1) has a ratchet rack (9) fixedly connected to the middle of its bottom end. The lower pressure plate (7) has a locking assembly for cooperating with the ratchet rack (9) installed at its top end. The rotating rods (2) have a clamping assembly installed at their bottom end.

2. The cable tensioner according to claim 1, characterized in that: The lower pressure plate (7) has a through groove (11) below the ratchet (9).

3. The cable tensioner according to claim 1, characterized in that: The locking assembly includes a fixing block (8) fixedly connected to the top of the lower pressure plate (7). The inner wall of the fixing block (8) is provided with a sliding groove (12). A movable tooth (13) is slidably connected inside the sliding groove (12). A pull rod (14) is fixedly connected to the end of the movable tooth (13). A spring (15) is installed inside the sliding groove (12) corresponding to the periphery of the pull rod (14).

4. A wire and cable tensioner according to claim 3, characterized in that: The end of the pull rod (14) passes through the fixing block (8) and is fixedly connected to the stop block (16).

5. A wire and cable tensioner according to claim 1, characterized in that: The clamping assembly includes a clamping block (5) fixedly connected to the bottom end of the rotating rod (2), and the interior of the clamping block (5) is provided with a semi-circular groove.

6. A wire and cable tensioner according to claim 5, characterized in that: The inner wall of each semi-circular groove is provided with multiple protrusions (6).

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