Tensioning device suitable for power cable installation

Abstract

The utility model discloses a tensioning device suitable for power cable installation, which belongs to the technical field of power cables and comprises an installation box, the top of the installation box is connected with two hinges, one sides of the two hinges are connected with the same box cover, one side of the box cover is attached to one side of the installation box, and the top of the installation box is provided with a tensioning mechanism. According to the cable tensioning device, the tensioning mechanism is arranged, a handle rotates to drive a worm, a worm gear and a gear to rotate, so that a rack, a sliding block, a connecting block and a tensioning wheel are driven to move, the tensioning wheel can conduct tensioning adjustment on a cable, a first ratchet ring, a second ratchet ring and a first spring are arranged, and a rotating rod can only rotate in one direction; the position of the tensioning wheel can be limited, the tensioning wheel is always kept at the position where the tensioning wheel is located, sliding and deviation do not occur, compared with a clamping and stretching mode, the mode avoids the phenomenon that the cable is loosened again, and therefore the tensioning stability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power cables, and in particular relates to a tensioning device suitable for installing power cables. Background Art

[0002] Power cable is a cable used to transmit and distribute electrical energy. It is often used in urban underground power grids, lead-out lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. In order to ensure the normal operation of the cable and extend its service life, a tensioning device is required to properly adjust the tension of the cable.

[0003] The existing tensioning device does not have a device to protect the cable. When the operator adjusts the tension of the cable, if the tension applied is too large, it is easy to cause the cable to break, thereby damaging the cable. In addition, the existing tensioning device tensions the cable by clamping and stretching. This clamping method will become loose or even slip over time, causing the cable to become loose again. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that the cable may become loose after a long period of time when tensioned by clamping and stretching, and the cable may break when too much tension is applied, and to propose a tensioning device suitable for power cable installation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tensioning device suitable for power cable installation, comprising an installation box, two hinges connected to the top of the installation box, and one side of the two hinges is connected to the same box cover, one side of the box cover is in contact with one side of the installation box, a tensioning mechanism is arranged on the top of the installation box, two locking components are connected to one side of the box cover, and one side of the locking component is connected to one side of the installation box;

[0007] The outer wall of the fixing block is connected to the inner wall of the installation box, the top of the fixing box is connected to the inner wall of the installation box, the inner wall of the fixing box is slidably connected to the first ratchet ring, the inner wall of the first ratchet ring is slidably connected to the rotating rod, the outer wall of the rotating rod is connected to the second ratchet ring, the outer wall of the second ratchet ring is affixed to the outer wall of the first ratchet ring, the outer wall of the second ratchet ring is rotatably connected to the inner wall of the fixing box, both ends of the rotating rod extend outside the fixing box, one end of the rotating rod is connected to a worm, one side of the worm is meshed with a worm wheel, the inner wall of the worm wheel is connected to a first connecting rod, one end of the first connecting rod is rotatably connected to the inner wall of the installation box, the outer wall of the first connecting rod is connected to a gear, one side of the gear is meshed with a rack, one side of the rack is connected to a slider, one side of the slider is connected to the connecting block, and one side of the connecting block is connected to the tensioning wheel.

[0008] As a further description of the above technical solution:

[0009] One end of the rotating rod extends outside the installation box and is connected to a rotating handle, the outer wall of the rotating rod is rotatably connected to a fixed plate, the top of the first ratchet ring is connected to two connecting plates, one side of the connecting plate extends outside the installation box and is connected to the bottom of the fixed plate, and the outer sleeve of the rotating rod is provided with a first spring, and the two ends of the first spring are respectively connected to the top of the first ratchet ring and the inner wall of the fixed box.

[0010] As a further description of the above technical solution:

[0011] A sliding groove is provided on one side of the fixed block, sliding grooves are provided on both sides of the sliding groove, the inner wall of the sliding groove is slidably connected to the outer wall of the sliding block, sliding blocks are connected on both sides of the sliding block, and the outer wall of the sliding block is slidably connected to the inner wall of the sliding groove.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the installation box is provided with a protective mechanism, which includes two fixed boxes, one side of the fixed box is connected to the inner wall of the installation box, both sides of the inner wall of the fixed box are provided with placement grooves, the inner wall of the placement groove is connected to a second spring, the other end of the second spring is connected to a limiting block, and the outer wall of the limiting block is slidably connected to the inner wall of the placement groove.

[0014] As a further description of the above technical solution:

[0015] A through slot is provided on one side of the inner wall of the two fixed boxes, and a moving rod is slidably connected to the inner wall of the through slot. One end of the moving rod is connected to a second connecting rod, and the other ends of the two moving rods extend outside the installation box and are connected to the same pushing rod.

[0016] As a further description of the above technical solution:

[0017] The outer walls of the two second connecting rods are provided with limiting grooves, the inner walls of the limiting grooves are clamped with the outer walls of the limiting blocks, the outer wall of the second connecting rod is connected to two moving blocks, and the inner walls of the two fixed boxes are provided with two moving grooves, the inner walls of the moving grooves are slidably connected to the outer walls of the moving blocks, one end of the second connecting rod is rotatably connected to a rope supporting wheel, and the same cable is attached to one side of the two rope supporting wheels and one side of the tensioning wheel, and both ends of the cable extend outside the installation box.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0019] 1. In the utility model, a tensioning mechanism is provided, and the rotating handle drives the rotating rod and the worm to rotate, and the rotation of the worm drives the worm wheel and the first connecting rod to rotate, thereby driving the gear to rotate, and the rotation of the gear drives the rack and the slider to move, and drives the tensioning wheel to move through the connecting block, so that the tensioning wheel can stretch the cable, thereby the cable tensioning can be adjusted, and when the rotating rod rotates, it also drives the second ratchet ring to rotate, and by providing the first ratchet ring and the first spring, the second ratchet ring can only rotate in one direction, thereby limiting the position of the tensioning wheel, and then the tensioning wheel can always be kept in the position without sliding and offsetting. Compared with the clamping and stretching method, this method avoids the phenomenon of cable relaxation again, thereby improving the tensioning stability.

[0020] 2. In the utility model, by setting a protective mechanism, when the tensioning wheel applies tension to the cable, the cable will squeeze the rope support wheel and give a downward pressure to the rope support wheel and the second connecting rod. When the pressure applied to the second connecting rod is greater than the elastic force of the second spring, the limit block will move into the placement groove and release the restriction on the second connecting rod, so that the second connecting rod can drive the rope support wheel to move downward, thereby reducing the tension on the cable and avoiding the cable from breaking due to excessive tension. The cable can be protected and the service life of the cable is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the lock assembly of the utility model;

[0023] Figure 3 This is a schematic diagram of the side section structure of the installation box of the utility model;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the fixing box of the utility model;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the fixed block of the utility model;

[0026] Figure 6 This is a schematic diagram of the fixed box structure of the utility model;

[0027] Figure 7 This is a schematic diagram of the cross-sectional structure of the fixed box of the utility model.

[0028] Legend: 1. Installation box; 2. Cable; 3. Box cover; 4. Tensioning mechanism; 401. Turning handle; 402. Fixing plate; 403. Fixing box; 404. Turning rod; 405. Gear; 406. Worm; 407. Worm wheel; 408. First connecting rod; 409. Rack; 410. Fixing block; 411. Tensioning wheel; 412. Connecting block; 413. Sliding block; 414. Sliding slot; 415. Sliding slot; 416. Sliding block; 417, connecting plate; 418, first ratchet ring; 419, first spring; 420, second ratchet ring; 5, protection mechanism; 501, rope support wheel; 502, fixed box; 503, moving rod; 504, pushing rod; 505, moving block; 506, second connecting rod; 507, moving groove; 508, placement groove; 509, second spring; 510, limit block; 511, through groove; 512, limit groove; 6, locking assembly; 7, hinge. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-7 The utility model provides a technical solution: a tensioning device suitable for power cable installation, comprising an installation box 1, two hinges 7 are connected to the top of the installation box 1, and one side of the two hinges 7 is connected to the same box cover 3, one side of the box cover 3 is in contact with one side of the installation box 1, a tensioning mechanism 4 is arranged on the top of the installation box 1, two locking components 6 are connected to one side of the box cover 3, and one side of the locking component 6 is connected to one side of the installation box 1;

[0031] The tensioning mechanism 4 includes a fixed box 403 and a fixed block 410. The outer wall of the fixed block 410 is connected to the inner wall of the installation box 1. The top of the fixed box 403 is connected to the inner wall of the installation box 1. The inner wall of the fixed box 403 is slidably connected to a first ratchet ring 418. The inner wall of the first ratchet ring 418 is slidably connected to a rotating rod 404. The outer wall of the rotating rod 404 is connected to a second ratchet ring 420. The outer wall of the second ratchet ring 420 is in contact with the outer wall of the first ratchet ring 418. The outer wall of the gear ring 420 is rotatably connected to the inner wall of the fixed box 403, both ends of the rotating rod 404 extend to the outside of the fixed box 403, one end of the rotating rod 404 is connected to a worm 406, one side of the worm 406 is meshed with a worm wheel 407, the inner wall of the worm wheel 407 is connected to a first connecting rod 408, one end of the first connecting rod 408 is rotatably connected to the inner wall of the installation box 1, the outer wall of the first connecting rod 408 is connected to a gear 405, one side of the gear 405 is meshed with a rack 409 A slider 413 is connected to one side of the rack 409, a connecting block 412 is connected to one side of the slider 413, a tensioning wheel 411 is connected to one side of the connecting block 412, one end of the rotating rod 404 extends to the outside of the installation box 1 and is connected to the rotating handle 401, the outer wall of the rotating rod 404 is rotatably connected to the fixed plate 402, two connecting plates 417 are connected to the top of the first ratchet ring 418, one side of the connecting plate 417 extends to the outside of the installation box 1 and is connected to the bottom of the fixed plate 402, a first spring 419 is arranged on the outer sleeve of the rotating rod 404, and the two ends of the first spring 419 are respectively connected to the top of the first ratchet ring 418 and the inner wall of the fixed box 403, a sliding groove 414 is provided on one side of the fixed block 410, and sliding grooves 415 are provided on both sides of the sliding groove 414, the inner wall of the sliding groove 414 is slidably connected to the outer wall of the slider 413, and sliding blocks 416 are connected to both sides of the slider 413, and the outer wall of the sliding block 416 is slidably connected to the inner wall of the sliding groove 415.

[0032] The specific implementation method is as follows: by setting a tensioning mechanism 4, by rotating the rotating handle 401, the rotating rod 404 is driven to rotate, the rotating rod 404 rotates to drive the worm 406 to rotate, the worm 406 rotates to drive the worm wheel 407 and the first connecting rod 408 to rotate, the first connecting rod 408 rotates to drive the gear 405 to rotate, the gear 405 rotates to drive the rack 409 and the slider 413 to move, the slider 413 moves to drive the connecting block 412 and the tensioning wheel 411 to move, so that the tensioning wheel 411 can stretch the cable 2, so that the cable 2 can be tensioned and adjusted, and when the rotating rod 404 rotates, it will also drive the second ratchet ring 420 to rotate, by setting the first ratchet ring 418 and the first spring 419, when the second ratchet ring 420 rotates counterclockwise, it will be stuck and cannot rotate, and when the second ratchet ring 420 rotates clockwise, the second ratchet ring The inclined surface on one side of the ratchet tooth 420 will squeeze the inclined surface on one side of the ratchet tooth of the first ratchet ring 418, thereby driving the first ratchet ring 418 to move upward, and will not block the second ratchet ring 420, so that the second ratchet ring 420 can rotate. Since the second ratchet ring 420 can only rotate in one direction, it can limit the position of the tensioning wheel 411, so that the tensioning wheel 411 can always remain in its position without sliding and offset. Compared with the clamping and stretching method, this method avoids the phenomenon of cable 2 becoming loose again, thereby improving the tensioning stability. By setting the connecting plate 417 and the fixing plate 402, the operator can drive the first ratchet ring 418 to move upward through the fixing plate 402, thereby releasing the restriction on the rotating rod 404, and then the tension of the cable 2 can be readjusted.

[0033] The inner wall of the installation box 1 is provided with a protective mechanism 5, which includes two fixed boxes 502, one side of the fixed box 502 is connected to the inner wall of the installation box 1, and both sides of the inner wall of the fixed box 502 are provided with placement grooves 508, the inner wall of the placement groove 508 is connected to a second spring 509, and the other end of the second spring 509 is connected to a limit block 510, and the outer wall of the limit block 510 is slidably connected to the inner wall of the placement groove 508, and one side of the inner wall of the two fixed boxes 502 is provided with a through groove 511, and the inner wall of the through groove 511 is slidably connected to a moving rod 503, one end of the moving rod 503 is connected to the second connecting rod 506, and the two moving rods 503 are connected to the second connecting rod 506. One end extends to the outside of the installation box 1 and is connected to the same pushing rod 504, and the outer walls of the two second connecting rods 506 are provided with limiting grooves 512, and the inner walls of the limiting grooves 512 are clamped with the outer walls of the limiting blocks 510, the outer walls of the second connecting rods 506 are connected to two moving blocks 505, and the inner walls of the two fixed boxes 502 are provided with two moving grooves 507, and the inner walls of the moving grooves 507 are slidingly connected to the outer walls of the moving blocks 505, one end of the second connecting rod 506 is rotatably connected to the rope support wheel 501, and the same cable 2 is attached to one side of the two rope support wheels 501 and one side of the tensioning wheel 411, and both ends of the cable 2 extend to the outside of the installation box 1.

[0034] The specific implementation method is as follows: by setting the protection mechanism 5 and setting the limiting grooves 512 on both sides of the second connecting rod 506, the limiting block 510 can be clamped with the limiting grooves 512 through the elastic force of the second spring 509, so as to limit the position of the second connecting rod 506. When the tensioning wheel 411 applies tension to the cable 2, the cable 2 will squeeze the rope support wheel 501, giving the rope support wheel 501 a downward pressure, and also giving the second connecting rod 506 a downward pressure. Since the elastic force of the second spring 509 is slightly smaller than the ultimate tension that the cable 2 can withstand, when the second connecting rod 506 is When the pressure applied to the rod 506 is greater than the elastic force of the second spring 509, the limit block 510 will move into the placement groove 508, thereby releasing the restriction on the second connecting rod 506, so that the second connecting rod 506 can drive the rope support wheel 501 to move downward, thereby reducing the tension on the cable 2 and preventing the cable 2 from breaking due to excessive tension, thereby protecting the cable 2 and increasing the service life of the cable 2. By setting the moving rod 503 and the pushing rod 504, the operator can restore the second connecting rod 506 to its original position, thereby re-adjusting the tension of the cable 2.

[0035] Working principle: When in use, the rotating handle 401 is rotated to drive the rotating rod 404 and the worm 406 to rotate, and the first connecting rod 408 and the gear 405 are rotated through the worm gear 407, thereby driving the rack 409 and the slider 413 to move, and the tensioning wheel 411 is driven to move through the connecting block 412, thereby stretching and tensioning the cable 2. By setting the first ratchet ring 418 and the first spring 419, the rotating rod 404 can only drive the second ratchet ring 420 to rotate in one direction, thereby limiting the position of the tensioning wheel 411, thereby enabling the tensioning wheel 411 to always remain in its position without sliding or offsetting. When the tension applied by the tensioning wheel 411 to the cable 2 is too large, the limit block 510 will move into the placement groove 508, thereby releasing the restriction on the second connecting rod 506, so that the second connecting rod 506 can drive the rope support wheel 501 to move downward, thereby reducing the tension on the cable 2, thereby protecting the cable 2.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tensioning device suitable for power cable installation, comprising an installation box (1), characterized in that: The installation box (1) is connected to the top with two hinges (7), and one side of the two hinges (7) is connected to the same box cover (3), one side of the box cover (3) is in contact with one side of the installation box (1), a tensioning mechanism (4) is provided on the top of the installation box (1), one side of the box cover (3) is connected to two locking components (6), and one side of the locking component (6) is connected to one side of the installation box (1); The tensioning mechanism (4) comprises a fixing box (403) and a fixing block (410), the outer wall of the fixing block (410) being connected to the inner wall of the installation box (1), the top of the fixing box (403) being connected to the inner wall of the installation box (1), the inner wall of the fixing box (403) being slidably connected to a first ratchet ring (418), the inner wall of the first ratchet ring (418) being slidably connected to a rotating rod (404), the outer wall of the rotating rod (404) being connected to a second ratchet ring (420), the outer wall of the second ratchet ring (420) being in contact with the outer wall of the first ratchet ring (418), the outer wall of the second ratchet ring (420) being rotatably connected to the inner wall of the fixing box (403), the rotating rod (404) Both ends extend outside the fixed box (403); one end of the rotating rod (404) is connected to a worm (406); one side of the worm (406) is meshed with a worm wheel (407); the inner wall of the worm wheel (407) is connected to a first connecting rod (408); one end of the first connecting rod (408) is rotatably connected to the inner wall of the installation box (1); the outer wall of the first connecting rod (408) is connected to a gear (405); one side of the gear (405) is meshed with a rack (409); one side of the rack (409) is connected to a slider (413); one side of the slider (413) is connected to a connecting block (412); one side of the connecting block (412) is connected to a tensioning wheel (411).

2. A tensioning device suitable for power cable installation according to claim 1, characterized in that: One end of the rotating rod (404) extends to the outside of the installation box (1) and is connected to a rotating handle (401); the outer wall of the rotating rod (404) is rotatably connected to a fixed plate (402); the top of the first ratchet ring (418) is connected to two connecting plates (417); one side of the connecting plate (417) extends to the outside of the installation box (1) and is connected to the bottom of the fixed plate (402); a first spring (419) is provided on the outer sleeve of the rotating rod (404); two ends of the first spring (419) are respectively connected to the top of the first ratchet ring (418) and the inner wall of the fixed box (403).

3. A tensioning device suitable for power cable installation according to claim 1, characterized in that: A sliding groove (414) is provided on one side of the fixed block (410), sliding grooves (415) are provided on both sides of the sliding groove (414), the inner wall of the sliding groove (414) is slidably connected to the outer wall of the sliding block (413), the two sides of the sliding block (413) are connected to sliding blocks (416), and the outer wall of the sliding block (416) is slidably connected to the inner wall of the sliding groove (415).

4. A tensioning device suitable for power cable installation according to claim 1, characterized in that: The inner wall of the installation box (1) is provided with a protective mechanism (5), and the protective mechanism (5) comprises two fixed boxes (502), one side of the fixed box (502) is connected to the inner wall of the installation box (1), and both sides of the inner wall of the fixed box (502) are provided with placement grooves (508), the inner wall of the placement groove (508) is connected to a second spring (509), the other end of the second spring (509) is connected to a limit block (510), and the outer wall of the limit block (510) is slidably connected to the inner wall of the placement groove (508).

5. A tensioning device suitable for power cable installation according to claim 4, characterized in that: A through slot (511) is provided on one side of the inner wall of the two fixed boxes (502), and a moving rod (503) is slidably connected to the inner wall of the through slot (511), one end of the moving rod (503) is connected to a second connecting rod (506), and the other ends of the two moving rods (503) extend outside the installation box (1) and are connected to the same pushing rod (504).

6. A tensioning device suitable for power cable installation according to claim 5, characterized in that: The outer walls of the two second connecting rods (506) are each provided with a limiting groove (512), the inner walls of the limiting groove (512) are clamped with the outer wall of the limiting block (510), the outer wall of the second connecting rod (506) is connected to the two moving blocks (505), and the inner walls of the two fixed boxes (502) are each provided with two moving grooves (507), the inner walls of the moving grooves (507) are slidably connected to the outer walls of the moving blocks (505), one end of the second connecting rod (506) is rotatably connected to a rope support wheel (501), and one side of the two rope support wheels (501) and one side of the tensioning wheel (411) are attached with the same cable (2), and both ends of the cable (2) extend outside the installation box (1).

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