A power cable laying device

Abstract

The present application relates to the technical field of cable construction, and specifically discloses a power cable laying device, which includes a cable car, a supporting mechanism and a braking mechanism, wherein the supporting mechanism includes a supporting block arranged on the cable car and a supporting rod arranged on the supporting block, wherein the supporting rod is used to be inserted into the cable drum, and the braking mechanism includes a braking pad slidingly arranged on the cable car and a linkage assembly driving the braking pad to move, wherein the braking pad is used to abut against the cable drum. The present application has the effect of extending the service life of the cable.

Description

Technical Field

[0001] The present application relates to the technical field of cable construction, and in particular to a power cable laying device. Background Art

[0002] As the carrier for the circulation of urban electricity, power cables have gradually moved from the ground to underground in the continuous development of the city, and from the original extensive aerial installation to a more standardized and safe underground installation.

[0003] In the related art, when laying cables by direct burial, it is necessary to first open a cable trench on the ground, then pull one end of the cable out of the cable drum and place it in the cable trench, then move the cable-releasing trolley while releasing the cable from the cable drum, and finally backfill the cable trench.

[0004] With regard to the above-mentioned related technologies, if the movement of the cable laying trolley encounters an obstacle or the construction needs to be stopped temporarily, the cable on the cable reel will continue to be released due to inertia, causing the released cable or the cable already placed in the cable trench to bend, and the bending radius of the cable may be easily made smaller than the specified value, thereby damaging the cable and affecting the service life of the cable. This needs to be improved. Summary of the invention

[0005] In order to extend the service life of the cable, the present application provides a power cable laying device.

[0006] The present application provides a power cable laying device adopting the following technical solution:

[0007] A power cable laying device includes a cable car, a supporting mechanism and a braking mechanism, wherein the supporting mechanism includes a supporting block arranged on the cable car and a supporting rod arranged on the supporting block, the supporting rod is used to be passed through the cable drum, and the braking mechanism includes a brake pad slidably arranged on the cable car and a linkage component that drives the brake pad to move, and the brake pad is used to abut against the cable drum.

[0008] By adopting the above technical solution, when laying the cable, the support rod is first inserted into the cable drum, and then the support rod is placed on the support block. Then one end of the cable is pulled out from the cable drum and placed in the pre-dug cable trench, and finally the cable car is moved. When an emergency occurs during the construction process, the cable car is stopped and the brake pad is driven to move through the linkage assembly so that the brake pad is pressed against the cable drum, thereby limiting the rotation of the cable drum to minimize the bending of the cable due to further release, thereby reducing the damage to the cable and extending the service life of the cable.

[0009] Optionally, the cable car includes a body, a transmission shaft rotatably arranged on the body, and a wheel arranged on the transmission shaft, the linkage assembly includes a moving rod rotatably arranged on the body, a first gear sleeved on the transmission shaft, a second gear rotatably sleeved on the moving rod, and a brake spring connected to a brake pad, the first gear meshing with the second gear, the brake pad being arranged at one end of the moving rod, a linkage block being arranged on the inner wall of the second gear, a linkage thread groove extending spirally around the axis of the moving rod and a retraction groove extending along the sliding direction of the brake pad being provided on the circumferential side wall of the moving rod, the linkage block being slidably arranged in the linkage thread groove, the linkage thread groove including a retraction thread groove, the retraction groove being used for sliding of the linkage block, the retraction groove connecting one end of the retraction thread groove close to the brake pad and the end of the retraction thread groove away from the brake pad; when the body moves forward, the brake pad moves in a direction away from the cable drum.

[0010] By adopting the above technical solution, when the vehicle body moves forward, the wheels and the transmission shaft rotate together, and the transmission shaft drives the second gear and the linkage block on the second gear to rotate through the first gear. Since the axial side wall of the moving rod is provided with a linkage thread groove extending spirally around the axis of the moving rod, and the linkage block is slidably arranged in the linkage thread groove, the moving rod rotates and moves, so that the brake pad moves away from the cable drum. In this way, a gap can be generated between the brake pad and the cable drum, and the cable drum can rotate normally to release the cable, and the brake spring is compressed at this time.

[0011] As the cable car continues to move forward, the linkage block moves into the retracting thread groove until the linkage block moves into the end of the retracting thread close to the brake pad. At this time, under the action of the brake spring, the linkage block moves through the retracting groove to the end of the retracting thread groove away from the brake pad. This reciprocating process allows the moving rod, the second gear, the first gear, the transmission shaft and the wheel to rotate normally during the forward movement of the vehicle body.

[0012] When the vehicle body stops moving forward, under the action of the brake spring, the moving rod rotates and moves in the opposite direction to push the brake pad to move toward the cable drum until the brake pad is pressed against the cable drum, thereby limiting the cable drum from rotating further.

[0013] Such an arrangement enables the cable drum to rotate normally and release the cable when the cable car moves normally, and when the cable car stops moving, the cable drum automatically stops rotating to limit the release of the cable. Compared with manually locking and braking the cable drum, the convenience of using the releasing device of the present application is effectively improved.

[0014] Optionally, the linkage thread groove further includes an unlocking thread groove located on a side of the retraction thread groove away from the brake pad, and a pitch of the unlocking thread groove is greater than that of the retraction thread groove.

[0015] By adopting the above technical solution, the pitch of the unlocking thread groove is greater than the retraction thread groove, so that when the cable car starts to move forward, the brake pad and the moving rod can quickly retract, and try to ensure that the cable drum can start to rotate synchronously with the movement of the cable car. The retraction thread groove set in this way can effectively shorten the extension length of the retraction groove, thereby reducing the amplitude of the reciprocating movement of the moving rod during the forward movement of the cable car, effectively reducing the damage of the linkage block to the wall of the retraction thread groove, thereby increasing the service life of the brake mechanism.

[0016] Optionally, the linkage assembly also includes a spring seat and a stabilizing seat, both of which are arranged on the vehicle body, the movable rod passes through the spring seat and the stabilizing seat along its own sliding direction, and the movable rod is rotatably arranged on the spring seat and the stabilizing seat, and the brake spring is in conflict with the spring seat.

[0017] By adopting the above technical solution, compared with only setting a spring seat, by setting a spring seat and a stabilizing seat on the vehicle body, the stability of the moving rod during sliding and rotation is effectively improved, and the displacement of the moving rod during sliding is limited.

[0018] Optionally, the support mechanism further includes a support seat slidably disposed on the vehicle body along a vertical direction and a driving assembly driving the support seat to move along the vertical direction, and the support block is disposed on the support seat.

[0019] By adopting the above technical solution, when the cable drum is installed on the cable car, the support seat is first driven downward by the driving assembly, and the support seat drives the support block to move downward. Then the support rod is passed through the cable drum and the end of the support rod is located above the support block. Finally, the support block is driven upward by the driving assembly. During the upward movement, the support block contacts the support rod and drives the cable drum upward through the support rod, so that the cable drum no longer contacts the ground. Compared with hoisting the cable drum by means of a crane, this arrangement effectively improves the simplicity of cable drum installation.

[0020] Optionally, the linkage assembly also includes a connecting seat and a return spring, the spring seat and the stabilizing seat are both connected to the connecting seat, the support seat is provided with a clearance groove for the end of the stabilizing seat to extend into, the return spring is connected to the stabilizing seat and is used to drive the stabilizing seat to move toward the direction close to the clearance groove, and a return slope is provided between the lower groove wall of the clearance groove and the end face of the support seat close to the brake pad.

[0021] By adopting the above technical solution, when the cable drum is not installed, the driving assembly drives the support seat to move to the clearance groove and align with the stable seat. Under the action of the reset spring, the end of the stable seat moves into the clearance groove, and the stable seat drives the spring seat to move through the connecting seat, so that the moving rod, the brake spring and the brake pad move together. In this way, when the cable seat is installed, there is no need to push the brake pad, which improves the convenience of cable drum installation. After the support rod is inserted into the cable drum and the end of the support rod is placed above the support block, the driving assembly drives the support seat to move upward. At this time, the reset inclined surface presses on the stable block and drives the stable block to move out of the clearance groove, and the connecting seat, the spring seat, the moving rod, the brake spring and the brake pad move to make the brake pad press against the cable seat. In this way, compared with the staff adjusting the brake pad by themselves, the convenience of using the application device of this application is effectively improved.

[0022] Optionally, a plurality of support blocks are provided, and the support blocks are arranged in a vertical direction.

[0023] By adopting the above technical solution, when the driving assembly drives the support seat to move upward a limited distance, by providing a plurality of support blocks arranged in the vertical direction, cable reels of different diameters can be lifted, thereby improving the adaptability of the placing device of the present application.

[0024] Optionally, the support mechanism also includes a guide rail arranged on the vehicle body, the driving assembly includes a fixed pulley rotatably arranged on the guide rail and a winch arranged on the vehicle body, the support seat is slidably arranged on the guide rail, one end of the steel wire rope of the winch is connected to the support seat, and the steel wire rope of the winch is wound around the fixed pulley.

[0025] By adopting the above technical solution, compared with lifting the support seat by means of a hydraulic cylinder or the like, the height of the support seat can be infinitely adjusted by a winch, which helps the laying device of the present application to adapt to cable drums of different diameters.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. By adding a braking mechanism to the cable car, on the one hand, it ensures that the cable drum can rotate normally to release the cable when the cable car moves forward, and on the other hand, when the cable car stops moving forward, the cable drum can be locked and braked to limit the further release of the cable, reducing the damage to the cable due to bending and extending the service life of the cable;

[0028] 2. The driving assembly drives the support seat to move in the vertical direction, thereby driving the support block to move in the vertical direction, so that when installing the cable drum, there is no need to hoist the cable drum, which improves the simplicity of cable drum installation;

[0029] 3. By slidingly arranging the stabilizing seat and the spring seat on the vehicle body, opening a giving way groove on the supporting seat and installing a reset spring on the stabilizing seat, when the cable drum is not installed, the moving rod and the brake pad can make way for the installation of the cable drum, thereby facilitating the installation of the cable drum; when the cable drum is installed and lifted, the reset slope can push the brake pad again through the stabilizing seat, the connecting seat, the spring seat and the brake spring to move it against the cable drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0031] Figure 2 It is a structural schematic diagram highlighting the braking mechanism in the embodiment of the present application.

[0032] Figure 3 It is a partial exploded schematic diagram highlighting the moving rod and the linkage block in the embodiment of the present application.

[0033] Description of reference numerals:

[0034] 1. Cable car; 11. Car body; 111. Dovetail groove; 12. Transmission shaft; 13. Wheel; 14. Auxiliary wheel; 2. Support mechanism; 21. Guide rail; 22. Support seat; 221. Give way groove; 222. Reset slope; 23. Drive assembly; 231. Winch; 232. Fixed pulley; 24. Support block; 25. Support rod; 3. Braking mechanism; 31. Brake pad; 32. Linkage assembly; 321. Stable seat; 322. Spring seat; 323. Connecting seat; 324. Reset spring; 325. Dovetail block; 326. First gear; 327. Second gear; 3271. Linkage block; 328. Moving rod; 3281. Linkage thread groove; 32811. Unlocking thread groove; 32812. Retraction thread groove; 3282. Retraction groove; 329. Brake spring. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-3 This application is described in further detail.

[0036] The present application embodiment discloses a power cable laying device. Figure 1 The power cable laying device includes a cable car 1, a supporting mechanism 2 for supporting the cable drum, and two sets of braking mechanisms 3 for limiting the rotation of the cable drum.

[0037] Reference Figure 1 The cable car 1 includes a body 11 , two transmission shafts 12 rotatably disposed on the body 11 , two wheels 13 respectively sleeved and fixed on different transmission shafts 12 , and an auxiliary wheel 14 rotatably disposed on the body 11 .

[0038] Reference Figure 1 The support mechanism 2 includes two guide rails 21 fixed on the vehicle body 11, two support seats 22 slidably arranged on different guide rails 21 along the vertical direction, two groups of driving components 23 respectively driving different support seats 22 to move along the vertical direction, four support blocks 24 and a support rod 25 for passing through the cable drum.

[0039] Reference Figure 1 The support base 22 extends in the vertical direction, two support blocks 24 are fixed on one support base 22, and the other two support blocks 24 are fixed on the other support base 22. The support blocks 24 on the same support base 22 are arranged in the vertical direction, and the support blocks 24 on the two support bases 22 are symmetrically arranged. The support blocks 24 are hook-shaped, and the two ends of the support rod 25 are placed on the corresponding two support blocks 24 on different support bases 22.

[0040] Reference Figure 1 The driving assembly 23 includes a winch 231 whose body is fixed on the vehicle body 11 and a fixed pulley 232 arranged on the guide rail 21. The fixed pulleys 232 of different driving assemblies 23 are respectively rotatably arranged at the top ends of different guide rails 21. The steel wire rope of the winch 231 is wound around the fixed pulley 232, and one end of the steel wire rope of the winch 231 is fixed on the support seat 22.

[0041] Reference Figure 1 When installing the cable drum, first move the cable drum between the two support seats 22, then insert the support rod 25 into the cable drum, and make the ends of the two support rods 25 respectively located above the corresponding support blocks 24. Finally, the support seat 22 is pulled upward by the winch 231, so that the ends of the support rods 25 contact the support blocks 24 and are lifted by the support blocks 24, thereby separating the cable drum from the ground.

[0042] Reference Figure 1 The two brake mechanisms 3 are respectively linked to different transmission shafts 12, and the brake mechanism 3 includes a brake pad 31 for contacting the cable drum and a linkage component 32 for driving the brake pad 31 to move.

[0043] Reference Figure 1 , Figure 2 The linkage assembly 32 includes a stabilizing seat 321, a spring seat 322, a connecting seat 323 connecting the stabilizing seat 321 and the spring seat 322, a return spring 324 connected to the stabilizing seat 321, two dovetail blocks 325, a first gear 326 sleeved and fixed on the adjacent transmission shaft 12, a second gear 327 meshing with the first gear 326, a moving rod 328 that penetrates and rotates on the stabilizing seat 321 and the spring seat 322, and a brake spring 329 for driving the brake pad 31 to press against the cable drum.

[0044] Reference Figure 2The stabilizing seat 321 and the spring seat 322 are both fixed on the connecting seat 323. The stabilizing seat 321 and the spring seat 322 are slidably arranged on the vehicle body 11 along the sliding direction of the brake pad 31. The spring seat 322 is located on the side of the stabilizing seat 321 close to the brake pad 31. The extension direction of the two dovetail blocks 325 is consistent with the sliding direction of the brake pad 31. The two dovetail blocks 325 are fixedly connected to the stabilizing seat 321 and the spring seat 322. The vehicle body 11 is provided with dovetail grooves 111 that are the same in number as the dovetail blocks 325. The extension direction of the dovetail grooves 111 is consistent with the sliding direction of the brake pad 31. Each dovetail block 325 is slidably arranged in a different dovetail groove 111.

[0045] Reference Figure 2 The second gear 327 is located between the stable seat 321 and the spring seat 322 , and two opposite side walls of the second gear 327 are in contact with the stable seat 321 and the spring seat 322 respectively.

[0046] Reference Figure 2 , Figure 3 One end of the moving rod 328 is fixedly connected to the brake pad 31, and the moving rod 328 is slidably arranged on the stable seat 321 and the spring seat 322 along the sliding direction of the brake pad 31. The axial direction of the moving rod 328 is consistent with its own sliding direction, and the second gear 327 is rotatably sleeved on the moving rod 328. A linkage block 3271 is fixed on the inner wall of the second gear 327, and a linkage thread groove 3281 spirally extending around the axial direction of the moving rod 328 and a retreat groove 3282 extending along the sliding direction of the brake pad 31 are provided on the axial side wall of the moving rod 328, and the linkage thread groove 3281 and the retreat groove 3282 are both used for the sliding of the linkage block 3271. The linkage thread groove 3281 includes an unlocking thread groove 32811 and a retracting thread groove 32812 located on the side of the unlocking thread groove 32811 close to the brake pad 31, the retracting thread groove 32812 is connected to the unlocking thread groove 32811, the pitch of the unlocking thread groove 32811 is greater than the retracting thread groove 32812, and the two ends of the retracting groove 3282 are respectively connected to the end of the retracting thread groove 32812 close to the brake pad 31 and the end of the retracting thread groove 32812 away from the brake pad 31. When the vehicle body 11 moves forward, the brake pad 31 moves in the direction away from the cable drum, that is, the brake pads 31 in the two brake mechanisms 3 move in opposite directions.

[0047] Reference Figure 2 , Figure 3 The brake spring 329 is sleeved on the moving rod 328, and the brake spring 329 is retracted along the sliding direction of the brake pad 31. The two ends of the brake spring 329 are respectively fixed to the spring seat 322 and the brake pad 31.

[0048] Reference Figure 2 , Figure 3The return spring 324 is extended and retracted along the sliding direction of the brake pad 31, and the two ends of the return spring 324 are respectively fixed to the stable seat 321 and the vehicle body 11. A clearance groove 221 for the end face of the stable seat 321 to extend into is provided on the end face of the support seat 22 facing the brake pad 31, and a return inclined surface 222 for contacting with the stable seat 321 is provided between the lower groove wall of the clearance groove 221 and the end face of the support seat 22 close to the brake pad 31. The return spring 324 is a tension spring, and the return spring 324 applies a force to the stable seat 321 in the direction away from the brake pad 31, so as to drive the return stable seat 321 to move in the direction close to the clearance groove 221.

[0049] The implementation principle of a power cable laying device in the embodiment of the present application is as follows: when installing the cable drum, first move the cable drum between the two support seats 22, then pass the support rod 25 through the cable drum and make the two ends of the support rod 25 respectively located on the corresponding support blocks 24, and then pull up the support seat 22 through the winch 231. During the upward movement of the support seat 22, the reset slope 222 presses against the stable seat 321 to drive the stable seat 321 to move in the direction close to the brake pad 31, and the connecting seat 323, the brake seat, the brake spring 329, the moving rod 328 and the brake pad 31 move together, so that the brake pads 31 in the two brake mechanisms 3 move toward each other and press against the cable drum.

[0050] When the vehicle body 11 moves forward, the wheel 13 and the transmission shaft 12 rotate, and the transmission shaft 12 drives the second gear 327 to rotate through the first gear 326. The linkage block 3271 rotates with the second gear 327 and moves in the unlocking thread groove 32811, and the moving rod 328 moves with the movement of the linkage block 3271, thereby driving the brake pad 31 to move, so that the brake pad 31 no longer conflicts with the cable drum. As the vehicle body 11 continues to move forward, the linkage block 3271 moves from the unlocking thread groove 32811 into the retracting thread groove 32812 until the linkage block 3271 moves to the end of the linkage thread groove 3281 close to the brake block. At this time, under the action of the brake spring 329, the linkage block 3271 moves through the retracting groove 3282 into the end of the retracting thread groove 32812 away from the brake pad 31. This reciprocating movement can ensure that the cable drum can rotate normally when the vehicle body 11 moves forward. When the vehicle body 11 stops moving, under the action of the vehicle body 11's own weight and the weight of the cable drum and the cable, the wheels 13 and the transmission shaft 12 will not rotate, that is, the linkage block 3271 will not move. Under the action of the brake spring 329, the brake pad 31 and the moving rod 328 move toward the direction close to the cable drum until the brake pad 31 contacts the cable drum to limit the rotation of the cable drum.

[0051] Such an arrangement not only ensures that the cable drum can rotate normally when the vehicle body 11 moves forward, but also enables the cable drum to stop rotating quickly when the vehicle body 11 stops moving forward, thereby minimizing the bending and damage of the cable caused by continued cable release, thereby increasing the service life of the cable.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A power cable laying device, comprising a cable car (1), characterized in that: It also includes a support mechanism (2) and a brake mechanism (3), wherein the support mechanism (2) includes a support block (24) arranged on the cable car (1) and a support rod (25) arranged on the support block (24), wherein the support rod (25) is used to be inserted into the cable drum, and the brake mechanism (3) includes a brake pad (31) slidably arranged on the cable car (1) and a linkage assembly (32) for driving the brake pad (31) to move, wherein the brake pad (31) is used to abut against the cable drum; The cable car (1) comprises a body (11), a transmission shaft (12) rotatably mounted on the body (11), and a wheel (13) mounted on the transmission shaft (12); the linkage assembly (32) comprises a moving rod (328) rotatably mounted on the body (11), a first gear (326) sleeved on the transmission shaft (12), a second gear (327) rotatably mounted on the moving rod (328), and a brake spring (329) connected to a brake pad (31); the first gear (326) meshes with the second gear (327); the brake pad (31) is mounted at one end of the moving rod (328); a linkage spring (329) is mounted on the inner wall of the second gear (327). The movable block (3271) is provided with a linkage thread groove (3281) spirally extending around the axis of the movable rod (328) and a retraction groove (3282) extending along the sliding direction of the brake pad (31) on the circumferential side wall of the movable rod (328); the linkage block (3271) is slidably arranged in the linkage thread groove (3281); the linkage thread groove (3281) includes a retraction thread groove (32812); the retraction groove (3282) is used for sliding of the linkage block (3271); the retraction groove (3282) is connected to one end of the retraction thread groove (32812) close to the brake pad (31) and the other end of the retraction thread groove (32812) away from the brake pad (31); When the vehicle body (11) moves forward, the brake pad (31) moves in a direction away from the cable drum.

2. A power cable laying device according to claim 1, characterized in that: The linkage thread groove (3281) further comprises an unlocking thread groove (32811) located on the side of the retracting thread groove (32812) away from the brake pad (31), and the pitch of the unlocking thread groove (32811) is greater than that of the retracting thread groove (32812).

3. A power cable laying device according to claim 2, characterized in that: The linkage assembly (32) further comprises a spring seat (322) and a stabilizing seat (321), wherein the spring seat (322) and the stabilizing seat (321) are both arranged on the vehicle body (11), the moving rod (328) penetrates the spring seat (322) and the stabilizing seat (321) along its own sliding direction, and the moving rod (328) is rotatably arranged on the spring seat (322) and the stabilizing seat (321), and the brake spring (329) is in contact with the spring seat (322).

4. A power cable laying device according to claim 3, characterized in that: The support mechanism (2) further comprises a support seat (22) slidably arranged on the vehicle body (11) in a vertical direction and a driving assembly (23) driving the support seat (22) to move in the vertical direction, and the support block (24) is arranged on the support seat (22).

5. A power cable laying device according to claim 4, characterized in that: The linkage assembly (32) further comprises a connecting seat (323) and a return spring (324); the spring seat (322) and the stabilizing seat (321) are both connected to the connecting seat (323); a recess (221) is provided on the supporting seat (22) for the end of the stabilizing seat (321) to extend into the clearance groove (221); the return spring (324) is connected to the stabilizing seat (321) and is used to drive the stabilizing seat (321) to move in a direction close to the clearance groove (221); a return inclined surface (222) is provided between the lower groove wall of the clearance groove (221) and the end surface of the supporting seat (22) close to the brake pad (31).

6. A power cable laying device according to claim 4, characterized in that: A plurality of the support blocks (24) are provided, and each of the support blocks (24) is arranged in a vertical direction.

7. A power cable laying device according to claim 4, characterized in that: The support mechanism (2) further comprises a guide rail (21) arranged on the vehicle body (11); the drive assembly (23) comprises a fixed pulley (232) rotatably arranged on the guide rail (21) and a winch (231) arranged on the vehicle body (11); the support seat (22) is slidably arranged on the guide rail (21); one end of a steel wire rope of the winch (231) is connected to the support seat (22), and the steel wire rope of the winch (231) is wound around the fixed pulley (232).

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