Power cable docking and pulling device and method of use

Abstract

This invention relates to a power cable splicing and tensioning device and its usage method, comprising a base, a fixed connector fixedly disposed at the front end of the base, the fixed connector including a support platform with legs, a first clamping assembly for fixing and holding the cable fixedly disposed above the support platform, a movable connector disposed at the rear end of the base, a second clamping assembly for fixing and holding another cable disposed inside the movable connector, an inner groove disposed on the surface of the base located below the movable connector, and a translation mechanism disposed inside the inner side to drive the movable connector toward the fixed connector; the invention has a compact overall structure, is easy to operate, can be adapted to splicing and tensioning operations of power cables of different specifications, has a wide range of applications, and high construction efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of cable construction equipment, specifically relating to a power cable splicing and pulling device and its usage method. Background Technology

[0002] In the construction, maintenance, and renovation of power lines, cable splicing is one of the core construction procedures, and the quality of cable splicing directly determines the operational stability and safety of the power lines. During cable splicing, precise alignment, uniform tensioning, and constant tension must be achieved between the two sections of cable to be spliced. This ensures a smooth splicing joint and avoids problems such as loose connections and poor contact caused by cable misalignment or uneven tension.

[0003] In the prior art, Chinese patent CN119134150A discloses a cable splicing device for power cables. This device rotates a column on one side, through which a round rod is inserted into a limiting hole. As one column rotates, the rotation is transmitted to the other column via the round rod. During rotation, the two columns move the cable to one side, and the cable is pulled out under tension. In use, the cable is placed between the column and the pressure block, and a spring-loaded telescopic rod pushes the pressure block down on the cable. The device clamps and tensions the cable through contact between the column and the cable. However, the contact between the column and the cable is a point contact structure, resulting in extremely low contact surface fit. During cable tensioning, problems such as cable slippage and radial displacement easily occur, and the cable end cannot be guaranteed to be horizontal. This directly causes large misalignment between the two sections of cable to be spliced, significantly reducing the quality of cable splicing and failing to meet the requirements for splicing high-voltage, long-distance power cables. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a power cable splicing puller and its usage method to solve the problems mentioned in the background art.

[0005] The objective of this invention is achieved as follows: a power cable splicing and pulling device includes a base, a fixed connector is fixedly disposed at the front end of the base, the fixed connector includes a support platform with legs, a first clamping assembly for fixing and holding a cable is fixedly disposed above the support platform, a movable connector is disposed at the rear end of the base, a second clamping assembly for fixing and holding another cable is disposed inside the movable connector, an inner groove is disposed on the surface of the base, the inner groove is located below the movable connector, and a translation mechanism is disposed inside the inner side to drive the movable connector to move closer to the fixed connector.

[0006] Preferably, a translation screw is rotatably connected to the inner groove along the length of the base via a bearing. The translation mechanism includes a sleeve, which is fixedly connected to the bottom of the movable base. The sleeve is screwed onto the translation screw. Translation guide rails are symmetrically arranged on the surface of the base along the length. The bottom of the movable base is engaged with the translation guide rails via a guide block.

[0007] Preferably, the first wire clamping assembly includes two sets of symmetrically arranged wire clamping guides and clamps. Both clamps are engaged with the upper side of the wire clamping guides. A transmission gear is provided between the close ends of the two wire clamping guides. A pair of racks is fixedly provided at the lower part of each of the two clamps. The two pairs of racks are located on both sides of the transmission gear and mesh with the transmission gear. A wire clamping screw is rotatably provided at the outer end of any wire clamping guide through a bearing. The wire clamping screw is threaded through and screwed into the clamp on the upper side of the wire clamping guide.

[0008] Preferably, the first cable clamping assembly has support pulleys rotatably mounted on both its front and rear sides, with the height of the support pulleys being flush with the height of the clamp. The support pulleys are used to provide horizontal support for the cable.

[0009] Preferably, the second wire clamping assembly includes a clamping seat, with hinged platforms symmetrically arranged on the left and right sides of the clamping seat. A wire clamping arm is hinged inside each of the two hinged platforms, and a movable block is hinged inside the lower end of each of the two wire clamping arms. A double-ended screw is rotatably arranged in the middle of the clamping seat through a bearing. The threads at both ends of the double-ended screw are in opposite directions. The double-ended screw is threaded through and screwed to the two movable blocks respectively. A handwheel is fixedly arranged at the end of the double-ended screw.

[0010] Preferably, a right-angle support is provided in the middle of the clamp, and a pad is provided at the upper end of each of the two clamping arms. The pad can be an elastic, wear-resistant rubber pad.

[0011] Preferably, a lifting assembly is provided between the movable receiving seat and the second clamping assembly. The lifting assembly includes vertical plates arranged symmetrically on the left and right sides. Each vertical plate has a limiting groove inside. A lifting plate is provided between the two vertical plates. The lifting plate is engaged with the limiting groove of the vertical plate by a limiting block. The second clamping assembly is fixedly disposed on the upper side of the lifting plate.

[0012] Preferably, a horizontal plate is fixedly installed above any vertical plate. The width of the horizontal plate is less than the distance between the two vertical plates, so that the cable can enter between the two vertical plates. A lifting screw is rotatably installed inside the horizontal plate through a bearing, and a lifting plate is screwed onto the outside of the lifting screw.

[0013] Preferably, the lower sides of the two vertical plates are connected to the bottom of the movable base by bolts, and the bottom of the vertical plates is provided with reinforcing ribs. The bolts facilitate the disassembly of the vertical plates for subsequent maintenance and replacement.

[0014] A method for using a power cable connection puller includes the following steps: S1. Place the entire device at the cable connection construction site, level the base, and ensure that the device is level and stable to ensure that the equipment does not shift or shake during the tensioning operation. S2. Pass the first section of cable to be connected through the first clamping component of the fixed connector and clamp and fix the first section of cable symmetrically. Pass the second section of cable through the right-angle bracket of the second clamping component and clamp and fix the second section of cable with the clamping arm. S3. Rotate the translation screw to drive the movable connector to move at a constant speed along the translation guide rail toward the fixed connector, and drive the second cable segment to slowly approach the first cable segment to achieve uniform tensioning. During the tensioning process, maintain stable tension until the ends of the two cable segments are attached and aligned. S4. After completing the precise cable splicing operation, rotate the translation screw in the opposite direction to drive the moving connector to reset, and release the first and second clamping components in sequence to release the cable clamping state. Remove the spliced ​​cable to complete the overall construction process.

[0015] The beneficial effects of this invention are: This device is equipped with two sets of independently structured wire clamping assemblies with compatible clamping methods. The first wire clamping assembly achieves synchronous and symmetrical clamping of the two clamps through gear and rack transmission. The second wire clamping assembly uses a double-headed screw to drive the clamping arm for a wrap-around clamping, which abandons the traditional point contact clamping structure, greatly improves the fit of the cable clamping, ensures uniform clamping force, eliminates the problems of cable slippage, offset, and misalignment during tensioning, effectively reduces cable alignment deviation, and significantly improves docking accuracy.

[0016] The first cable clamping assembly is equipped with supporting pulleys to provide horizontal support for the cable, ensuring that the cable remains straight during clamping and tensioning, and preventing the cable from bending and affecting the connection quality. The second cable clamping assembly is equipped with right-angle brackets and pads, which not only provide stable support for the cable, but also prevent the rigid clamping structure from abrading the cable sheath, thus protecting the integrity of the cable.

[0017] The lifting assembly can precisely adjust the vertical height of the second cable segment, achieving accurate alignment of the axes of the two cable segments and adapting to cable alignment requirements in different construction scenarios. Combined with the screw guide rail transmission structure of the translation mechanism, it enables uniform and stable cable tensioning, maintaining stable tension and avoiding cable deformation and port misalignment caused by sudden tension changes, thus ensuring the stability of the docking construction. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of a power cable connection and pulling device according to the present invention; Figure 2 This is a structural diagram of a fixed connector for a power cable connection and pull-out device according to the present invention; Figure 3This is a structural diagram of the first clamping assembly of a power cable splicing puller according to the present invention; Figure 4 This is a structural diagram of the second clamping assembly of a power cable splicing puller according to the present invention; Figure 5 This is a diagram showing the internal structure of the second clamping assembly of a power cable splicing puller according to the present invention. Figure 6 This is a structural diagram of the lifting assembly of a power cable docking puller according to the present invention; Figure 7 This is a front view of the lifting assembly of a power cable docking puller according to the present invention.

[0019] In the diagram: 100, base; 101, inner groove; 200, fixed connector; 201, support platform; 202, first wire clamping assembly; 2021, wire clamping guide rail; 2022, clamp; 2023, transmission gear; 2024, rack and pinion; 2025, wire clamping screw; 203, support pulley; 300, movable connector; 301, second wire clamping assembly; 3011, clamp; 3012, right-angle support; 3013, hinge platform; 30 14. Wire clamping arm; 3015. Movable block; 3016. Double-ended screw; 3017. Handwheel; 3018. Pad; 302. Lifting assembly; 3021. Vertical plate; 3022. Limiting groove; 3023. Lifting plate; 3024. Limiting block; 3025. Horizontal plate; 3026. Lifting screw; 400. Translation mechanism; 401. Translation guide rail; 402. Guide block; 403. Translation screw; 404. Sleeve. Detailed Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] like Figure 1 As shown, a power cable splicing and pulling device includes a base 100, which serves as the supporting base for the entire device, ensuring operational stability. A fixed connector 200 is fixedly mounted at the front end of the base 100. The fixed connector 200 has a support platform 201 with legs, which is horizontally arranged to provide stable support for the upper first clamping assembly. A first clamping assembly 202 is fixedly installed above the support platform 201 to clamp one section of the cable to be spliced. A movable connector 300 is slidably mounted at the rear end of the base 100. A second clamping assembly 301 is installed inside the movable connector 300 to clamp another section of the cable to be spliced. An inner groove 101 is formed on the surface of the base 100, corresponding to the area directly below the movable connector 300. A translation mechanism 400 is installed inside the inner groove 101 to drive the movable connector 300 to move back and forth, realizing the tensioning and splicing of the two cable sections.

[0022] A translation screw 403 is rotatably mounted inside the inner groove 101 along the length of the base 100 via bearings. The translation mechanism 400 includes a sleeve 404, the top of which is welded to the bottom of the movable connector 300. The translation screw 403 is threaded inside the sleeve 404, forming a screw drive structure with precise transmission and strong self-locking. A translation guide rail 401 is symmetrically fixedly mounted on the surface of the base 100 along its length. A guide block 402 is fixedly mounted on the bottom of the movable connector 300. The guide block 402 is slidably engaged with the translation guide rail 401, limiting and guiding the translational movement of the movable connector 300 to ensure smooth and non-deviation-free movement.

[0023] In this embodiment, the entire device is placed at the cable splicing construction site, ensuring that the device is level and stable. The two cable segments to be spliced ​​are respectively threaded into the first clamping assembly 202 of the fixed connector 200 and the second clamping assembly 301 of the movable connector 300. The translation screw 403 is rotated, which drives the sleeve 404 and the top movable connector 300 to move at a constant speed along the translation guide rail 401 toward the fixed connector 200, causing the second cable segment to slowly approach the first cable segment, achieving uniform tensioning of the two cable segments. During the tensioning process, the tension is kept stable until the ends of the two cable segments are aligned and ready for splicing.

[0024] In another embodiment, such as Figure 2-3 As shown, the first wire clamping assembly 202 includes two sets of symmetrically arranged wire clamping guide rails 2021 and clamps 2022. The two sets of wire clamping guide rails 2021 are fixed parallel to each other on the upper surface of the support 201, and the two clamps 2022 are slidably engaged with the upper side of the corresponding wire clamping guide rail 2021. A transmission gear 2023 is rotatably mounted between the opposite ends of the two sets of wire clamping guide rails 2021 via bearings. A pair of racks 2024 are fixedly mounted on the lower surface of each of the two clamps 2022. The two pairs of racks 2024 are symmetrically arranged on the left and right sides of the transmission gear 2023 and are engaged with the transmission gear 2023 for transmission. A wire clamping screw 2025 is rotatably mounted on the outer end of one set of wire clamping guide rails 2021 via bearings. The wire clamping screw 2025 is threadedly connected to the corresponding side clamp 2022.

[0025] In this embodiment, rotating the clamping screw 2025 drives one side of the clamp 2022 to move. Through rack and pinion gear meshing, the other side of the clamp 2022 moves synchronously in the opposite direction, achieving bidirectional symmetrical clamping. The cable is subjected to uniform force, and the clamping stability is extremely high. Support pulleys 203 are rotatably mounted on both the front and rear sides of the first clamping assembly 202. The top height of the support pulleys 203 is flush with the clamping center height of the clamp 2022, providing full horizontal support for the cable and preventing it from sagging or bending.

[0026] like Figure 4-5As shown, in another embodiment, the second wire clamping assembly 301 includes a clamping base 3011, with symmetrically fixed hinge platforms 3013 on both sides of the clamping base 3011. Wire clamping arms 3014 are hingedly mounted inside each of the two hinge platforms 3013, and the two sets of wire clamping arms 3014 can rotate relative to each other to open and close. Movable blocks 3015 are hingedly mounted at the lower ends of both wire clamping arms 3014. A double-ended screw 3016 is rotatably mounted in the middle of the clamping base 3011 via a bearing. The threads at both ends of the double-ended screw 3016 have opposite directions, and the double-ended screw 3016 is threadedly connected to the two movable blocks 3015 respectively. A handwheel 3017 is fixedly mounted at the end of the double-ended screw 3016 for easy manual rotation.

[0027] In this embodiment, rotating the handwheel 3017 drives the double-headed screw 3016 to rotate, causing the two movable blocks 3015 to move synchronously towards or away from each other, thereby driving the two sets of clamping arms 3014 to open and close synchronously, realizing cable clamping and release. A right-angle support 3012 is fixedly installed in the middle of the clamping base 3011 to support the bottom of the cable and improve the stability of the cable placement; the inner side of the upper end of each of the two clamping arms 3014 is fixedly fitted with a pad 3018. The pad 3018 is made of wear-resistant and non-slip rubber material, which can increase the contact area with the cable, improve the clamping friction, and at the same time avoid damage to the cable insulation. Both the right-angle support 3012 and the clamping arms 3014 have a certain extension length in the axial direction of the cable to ensure the horizontal clamping effect of the cable.

[0028] like Figure 6-7 As shown, in another embodiment, a lifting assembly 302 is assembled between the movable connector 300 and the second cable clamping assembly 301 to fine-tune the vertical height of the second cable segment for precise alignment. The lifting assembly 302 includes symmetrically arranged vertical plates 3021. A limiting groove 3022 is vertically formed on the inner side of each vertical plate 3021. A lifting plate 3023 is assembled between the two vertical plates 3021. Limiting blocks 3024 are fixed to the left and right ends of the lifting plate 3023. The limiting blocks 3024 slide and engage with the limiting grooves 3022, enabling vertical limiting and sliding of the lifting plate 3023. The second cable clamping assembly 301 is fixedly installed on the upper surface of the lifting plate 3023. A horizontal plate 3025 is fixedly installed at the top of one of the vertical plates 3021. The width of the horizontal plate 3025 is less than the distance between the two sets of vertical plates 3021, reserving space for cable insertion and facilitating quick cable placement. The lifting screw 3026 is mounted inside the horizontal plate 3025 via a bearing. The lifting plate 3023 is threaded onto the outside of the lifting screw 3026 in the middle. Rotating the lifting screw 3026 can drive the lifting plate 3023 to rise and fall vertically, making height adjustment precise and convenient.

[0029] The two vertical plates 3021 are fixedly connected to the movable connector 300 by bolts on the lower side, making disassembly and maintenance convenient. The bottom of the vertical plate 3021 is integrally formed with reinforcing ribs, which greatly improves the structural strength and load-bearing stability of the vertical plate 3021 and avoids deformation during long-term operation.

[0030] In this embodiment, when in use, rotating the lifting screw 3026 drives the lifting plate 3023 to rise and fall vertically along the limiting groove 3022 of the vertical plate 3021, thereby driving the second wire clamping assembly 301 and the clamped second section of cable to make slight adjustments in height, so that the axes of the two sections of cable coincide and complete precise alignment.

Claims

1. A power cable splicing and pulling device, comprising a base, characterized in that: A fixed connector is fixedly provided at the front end of the base. The fixed connector includes a support platform with legs. A first wire clamping assembly for fixing and holding cables is fixedly provided above the support platform. A movable connector is provided at the rear end of the base. A second wire clamping assembly for fixing and holding another cable is provided inside the movable connector. An inner groove is provided on the surface of the base. The inner groove is located below the movable connector. A translation mechanism is provided inside the inner side to drive the movable connector to move closer to the fixed connector.

2. The power cable splicing puller as described in claim 1, characterized in that: The inner groove is rotatably connected to a translation screw via a bearing along the length of the base. The translation mechanism includes a sleeve, which is fixedly connected to the bottom of the movable base. The sleeve is screwed onto the translation screw. The base surface is symmetrically provided with translation guide rails along the length direction. The bottom of the movable base is engaged with the translation guide rails via a guide block.

3. The power cable splicing and pulling device as described in claim 1, characterized in that: The first wire clamping assembly includes two sets of symmetrically arranged wire clamping guides and clamps. Both clamps are engaged with the upper side of the wire clamping guides. A transmission gear is provided between the close ends of the two wire clamping guides. A pair of racks is fixedly provided at the lower part of each of the two clamps. The two pairs of racks are located on both sides of the transmission gear and mesh with the transmission gear. A wire clamping screw is rotatably provided at the outer end of any wire clamping guide through a bearing. The wire clamping screw is threaded through and screwed to the clamp on the upper side of the wire clamping guide.

4. The power cable splicing and pulling device as described in claim 3, characterized in that: The first wire clamping assembly has rotatable support pulleys on both the front and rear sides, and the height of the support pulleys is flush with the height of the clamp.

5. The power cable splicing puller as described in claim 1, characterized in that: The second wire clamping assembly includes a clamping base, with hinged platforms symmetrically arranged on the left and right sides of the clamping base. Wire clamping arms are hinged inside each of the two hinged platforms, and movable blocks are hinged inside the lower ends of the two wire clamping arms. A double-ended screw is rotatably mounted in the middle of the clamping base via a bearing. The threads at both ends of the double-ended screw have opposite directions. The double-ended screw is threaded through and screwed to the two movable blocks respectively. A handwheel is fixedly mounted at the end of the double-ended screw.

6. The power cable splicing puller as described in claim 5, characterized in that: A right-angle support is provided in the middle of the clamp, and a pad is provided at the upper end of both clamping arms.

7. The power cable splicing puller as described in claim 1, characterized in that: A lifting assembly is provided between the movable connector and the second clamping assembly. The lifting assembly includes vertical plates arranged symmetrically on the left and right. Each vertical plate has a limiting groove inside. A lifting plate is provided between the two vertical plates. The lifting plate is engaged with the limiting groove of the vertical plate by a limiting block. The second clamping assembly is fixedly installed on the upper side of the lifting plate.

8. The power cable splicing puller as described in claim 7, characterized in that: A horizontal plate is fixedly installed above any vertical plate. The width of the horizontal plate is less than the distance between the two vertical plates, so that the cable can enter between the two vertical plates. A lifting screw is rotatably installed inside the horizontal plate through a bearing. The lifting plate is screwed onto the outside of the lifting screw.

9. A power cable splicing and pulling device as described in claim 8, characterized in that: The two vertical plates are connected to the bottom of the movable base by bolts, and the bottom of the vertical plates is provided with reinforcing ribs.

10. A method of using a power cable splicing puller as described in any one of claims 1-9, characterized in that: It includes the following steps: S1. Place the entire device at the cable connection construction site, level the base, and ensure that the device is level and stable to ensure that the equipment does not shift or shake during the tensioning operation. S2. Pass the first section of cable to be connected through the first clamping component of the fixed connector and clamp and fix the first section of cable symmetrically. Pass the second section of cable through the right-angle bracket of the second clamping component and clamp and fix the second section of cable with the clamping arm. S3. Rotate the translation screw to drive the movable connector to move at a constant speed along the translation guide rail toward the fixed connector, and drive the second cable segment to slowly approach the first cable segment to achieve uniform tensioning. During the tensioning process, maintain stable tension until the ends of the two cable segments are attached and aligned. S4. After completing the precise cable splicing operation, rotate the translation screw in the opposite direction to drive the moving connector to reset, and release the first and second clamping components in sequence to release the cable clamping state. Remove the spliced ​​cable to complete the overall construction process.

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