Secondary cable laying protection auxiliary device for reducing line loss

Abstract

The application relates to a secondary cable laying protection auxiliary device for reducing line loss, belonging to the secondary cable laying field, which comprises a driving assembly and a plurality of lifting blocks, the plurality of lifting blocks are simultaneously arranged on the driving assembly, the lifting blocks correspond to cable supports one by one, the driving assembly simultaneously drives all the lifting blocks to rotate around the respective corresponding cable supports, the lifting blocks repeatedly lift the cable and gradually push the cable forward, and the cable of a cable reel is gradually pulled to the cable support through a pulling assembly. The application has the effects of strengthening the protection of the cable and reducing the abrasion of the cable during the secondary cable laying process.

Description

Technical Field

[0001] This application relates to the field of secondary cable laying technology, and in particular to a secondary cable laying protection auxiliary device for reducing line loss. Background Technology

[0002] Before laying secondary cables (control cables) in a newly built substation, the civil engineering work should be completed, and the cable supports such as cable trench steel and angle iron for secondary cable laying should be installed. Therefore, the work environment at the substation secondary cable laying site is complex, and the large number and length of secondary cables required make the laying workload relatively large. Commonly, secondary cables are laid by dragging them directly on the ground. Without appropriate auxiliary laying devices, dragging the cables across the cable trench causes wear and tear on the paint of the cable supports (channel steel, angle iron, etc.). More importantly, the outer insulation of the secondary cables also wears down during the dragging process. Because the cables become dirty during dragging, any damage is difficult for workers to notice, posing a safety hazard after the substation is put into operation. Summary of the Invention

[0003] In order to enhance the protection of cables and reduce cable wear during the secondary cable laying process, this application provides a secondary cable laying protection auxiliary device to reduce line loss.

[0004] The secondary cable laying protection auxiliary device for reducing line loss provided in this application adopts the following technical solution: A secondary cable laying protection auxiliary device for reducing line loss includes a drive assembly and several lifting blocks. The lifting blocks are simultaneously mounted on the drive assembly, and each lifting block corresponds to a cable bracket. The drive assembly simultaneously drives all lifting blocks to rotate around their respective cable brackets. The rotating lifting blocks repeatedly lift the cable and gradually advance it forward. The cable in the cable reel is gradually pulled to the cable bracket by a pull-out assembly.

[0005] By adopting the above technical solution, the pull-out assembly first gradually pulls the cable to the cable support, and the drive assembly drives several lifting blocks to rotate around the axis of the corresponding cable support. Whenever the cable moves forward a certain distance, the lifting blocks first lift the cable and then push the cable forward, reducing the friction between the cable and the cable support during the forward laying process. The pull-out and lifting method replaces the traditional cable traction laying method, reducing the friction on the cable and strengthening the protection of the cable during the secondary cable laying process. It also reduces the wear on the paint on the surface of the cable supports such as channel steel and angle iron, and reduces the wear on the cable.

[0006] Optionally, the drive assembly includes a plurality of turntables, each turntable corresponding to a cable bracket. The turntables are rotatably mounted on the corresponding cable brackets. Each lifting block corresponds to a turntable and is mounted on the turntable. A traction rope is wound around the plurality of turntables and is taut with the turntables. One of the turntables is connected to a motor.

[0007] By adopting the above technical solution, the motor drives the corresponding turntable to rotate, and the traction rope moves. Since the traction rope and several turntables are in a taut state, the traction rope drives several turntables to rotate simultaneously, and several turntables drive their respective corresponding lifting blocks to rotate, thereby realizing that several lifting blocks rotate simultaneously to lift the cable and push the cable forward.

[0008] Optionally, the turntable is provided with a rotating sleeve, the lifting block is connected to an adjusting screw, the opening of the rotating sleeve is rotatably connected to a rotating nut, and the adjusting screw is inserted into the rotating sleeve and threadedly connected to the rotating nut.

[0009] By adopting the above technical solution, rotating the rotating nut causes the adjusting screw to extend into or out of the rotating sleeve, thereby adjusting the relative position of the lifting block and the cable bracket, which facilitates the laying of cables at different positions on the cable bracket.

[0010] Optionally, the lifting block has a groove, the cable is located in the groove, the rotating sleeve is connected to a guide sleeve, the adjusting screw is connected to a guide rod, one end of the guide rod is inserted into the guide sleeve, and the guide rod is provided with a scale.

[0011] By adopting the above technical solution, when the adjusting screw and the rotating sleeve are relatively displaced, the lifting block drives the guide rod to move. The guide rod and the guide sleeve move relative to each other, and the guide rod plays a guiding role, so that the adjusting screw can be stably extended and retracted. Moreover, the user can adjust the position of each lifting block and the cable bracket through the scale, so that each lifting block can accurately lift and feed the cable.

[0012] Optionally, two temporary supports are installed at each corner of the cable trench. Each of the two temporary supports is equipped with a guide wheel. The guide wheels of the two temporary supports are divided into two groups. The forward end of the traction rope passes through the guide wheels of one group, and the backward end of the traction rope passes through the guide wheels of the other group.

[0013] By adopting the above technical solution, since the cable trench has corner settings, the temporary support and guide wheel can be used to change the direction of the traction rope.

[0014] Optionally, each corner of the cable trench is bolted with a hanging plate, which is fixed to the top of the cable trench. The hanging plate is connected to a reversing pipe, and the two ends of the reversing pipe are provided with waist-shaped openings. A first guide roller is provided at the corner inside the reversing pipe to facilitate cable turning.

[0015] By adopting the above technical solution, when the cable is transferred to the corner, the cable continues to be lifted and fed in. The cable first rises and extends into the reversing tube, and then the cable descends and continues to extend into the reversing tube. After passing the first guide roller, the cable changes direction, and finally the cable extends out from the waist-shaped opening at the other end of the reversing tube, thereby realizing the automatic turning of the cable at the corner of the cable trench.

[0016] Optionally, the pull-out assembly includes a protective shell, a sliding shell slidably disposed within the protective shell, a conveyor rod slidably disposed within the sliding shell, and a plurality of clamping grooves opened at the end of the conveyor rod facing the cable reel, each clamping groove containing a clamping ball. A guide groove is opened at the end of the sliding shell facing the cable, and a rodless hydraulic cylinder is provided on the protective shell for moving the sliding shell. The cable sequentially passes through the protective shell, the sliding shell, and the conveyor rod, and then sequentially exits from the conveyor rod, the sliding shell, and the protective shell. When the sliding shell moves away from the cable reel, the guide groove pushes the plurality of clamping balls to simultaneously clamp the cable, and the clamping balls abut against the guide groove, causing the cable, the conveyor rod, and the sliding shell to move simultaneously away from the cable reel.

[0017] By adopting the above technical solution, the rodless hydraulic cylinder drives the sliding shell to move along the length of the protective shell. When the sliding shell moves away from the cable reel, the guide groove of the sliding shell drives the clamping ball to clamp the cable, and the guide groove and the clamping ball are in close contact, so that the transmission rod and the sliding shell pull the cable away from the cable reel. When the sliding shell moves closer to the cable, the guide groove and the clamping ball are instantly released from their clamping state, and the clamping ball is also released from its clamping state with the cable. This allows the cable to remain stationary as the sliding shell and the conveyor rod move closer to the cable reel, enabling the cable to be pulled back and forth intermittently, which is convenient for intermittent feeding in conjunction with the lifting block.

[0018] Optionally, a spring is provided at the end of the sliding shell away from the cable reel, and the spring is sleeved on the conveyor rod, and the spring is always in a compressed state.

[0019] By adopting the above technical solution, the spring always provides a pushing force towards the cable reel to the transmission rod. When the sliding shell moves away from the cable reel, the spring's pushing force causes the clamping ball to press more firmly against the guide groove, thereby strengthening the clamping effect of the clamping ball on the cable and reducing slippage between the cable and the clamping ball during cable pulling. When the sliding shell moves closer to the cable reel, although the spring's pushing force continues to push the clamping ball into contact with the cable, the force exerted by the cable on the clamping ball away from the cable reel counteracts the spring's pushing force, thus preventing the clamping ball from clamping the cable and from pressing against the inner wall of the guide groove. As the sliding shell moves closer to the cable reel, the clamping ball rolls on the cable. Furthermore, when the sliding shell moves away from the cable reel again, the clamping ball can immediately clamp the cable, and the sliding shell will not experience relative displacement with the cable.

[0020] Optionally, the end of the sliding housing away from the cable reel is threaded with a cover, one end of the transmission rod extends out of the cover, and the spring is fixed to the cover.

[0021] By adopting the above technical solution, the cover facilitates the installation and replacement of springs, clamping balls, and transmission rods.

[0022] Optionally, the inner bottom wall of the protective shell is rotatably provided with a plurality of second guide rollers, the axis of the second guide rollers being perpendicular to the cable.

[0023] By adopting the above technical solution, the second guide roller and the cable play a guiding role, reducing the friction between the cable and the inner wall of the mounting shell, and further reducing the wear on the cable.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The pull-out assembly first gradually pulls the cable to the cable bracket. The drive assembly drives several lifting blocks to rotate around the axis of the corresponding cable bracket. Whenever the cable moves forward a certain distance, the lifting blocks first lift the cable and then push the cable forward, reducing the friction between the cable and the cable bracket during the forward laying process. The pull-out and lifting method replaces the traditional cable traction laying method, reducing the friction on the cable and strengthening the protection of the cable during the secondary cable laying process. It also reduces the wear on the paint of the cable brackets such as channel steel and angle iron, and reduces the wear on the cable. 2. The rodless hydraulic cylinder drives the sliding shell to move along the length of the protective shell. When the sliding shell moves away from the cable reel, the guide groove of the sliding shell drives the clamping ball to clamp the cable, and the guide groove and the clamping ball are in close contact, so that the transmission rod and the sliding shell pull the cable away from the cable reel. When the sliding shell moves closer to the cable, the guide groove and the clamping ball are instantly released from their clamping state, and the clamping ball is also released from its clamping state with the cable. This allows the cable to remain stationary as the sliding shell and the conveyor rod move closer to the cable reel, enabling the cable to be pulled back and forth intermittently, which is convenient for intermittent feeding in conjunction with the lifting block. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0026] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0027] Figure 3 This is a schematic diagram illustrating the structure of the commutator in an embodiment of this application.

[0028] Figure 4 This is a schematic diagram illustrating the structure of the second guide roller in an embodiment of this application.

[0029] Figure 5 This is a schematic diagram illustrating the structure of the sliding shell in an embodiment of this application.

[0030] Figure 6 This is a schematic diagram illustrating the structure of the locking groove and locking ball in an embodiment of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Drive assembly; 11. Turntable; 12. Rotating sleeve; 13. Rotating nut; 14. Motor; 15. Traction rope; 16. Adjusting screw; 2. Pull-out assembly; 21. Protective shell; 22. Sliding shell; 221. Guide groove; 23. Rodless hydraulic cylinder; 24. Transmission rod; 241. Clamping groove; 25. Clamping ball; 26. Spring; 27. Cover; 28. Second guide roller; 3. Lifting block; 31. Support groove; 32. Guide rod; 33. Guide sleeve; 34. Scale; 4. Temporary support; 41. Guide wheel; 5. Hanging plate; 6. Reversing tube; 61. Waist-shaped opening; 62. First guide roller. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0033] This application discloses a secondary cable laying protection auxiliary device to reduce line loss.

[0034] like Figure 1 and Figure 2The secondary cable laying protection auxiliary device for reducing line loss includes a drive assembly 1 and a pull-out assembly 2. The drive assembly 1 includes several turntables 11, each turntable 11 corresponding to a cable support in the cable trench. The rotating shaft of the turntable 11 is bolted to the end of the cable support. A rotating sleeve 12 is bolted to the side of the turntable 11 facing the corresponding cable support. A rotating nut 13 is rotatably connected to the open end of the rotating sleeve 12. An adjusting screw 16 is threaded to the rotating nut 13. One end of the adjusting screw 16 extends into the rotating sleeve 12, and a lifting block 3 is fixed to the other end of the adjusting screw 16. The adjusting screw 16 is located on one side of the cable support and is parallel to the cable support. The lifting block 3 has a groove 31 along its circumference.

[0035] A guide rod 32 is fixed to the end face of the lifting block 3 facing the turntable 11. A guide sleeve 33 is fixed to one side of the rotating sleeve 12. One end of the guide rod 32 extends into the guide sleeve 33. The guide rod 32 is engraved with a scale 34. The guide rod 32 is parallel to the adjusting screw 16.

[0036] At each corner of the cable trench, two temporary supports 4 are bolted in place. The two temporary supports 4 are positioned opposite each other, and each temporary support 4 is rotatably connected to two guide wheels 41. The guide wheels 41 are arranged along the height of the temporary support 4, with the two guide wheels 41 at the higher positions of the two temporary supports 4 facing each other directly, and the two guide wheels 41 at the lower positions of the two temporary supports 4 facing each other directly. A motor 14 is installed at the starting point of the cable trench. The drive shaft of the motor 14 is coaxially fixed to the first turntable 11 at the starting point of the cable trench. Several turntables 11 share a common traction rope 15. The traction rope 15 first passes over the first turntable 11, then over each of the turntables 11. As it passes the corner of the cable trench, it passes between two high-positioned guide wheels 41. The traction rope 15 then goes around the last turntable 11 at the end of the cable trench, and then passes under each of the turntables 11. As it passes the corner of the cable trench, it passes between two low-positioned guide wheels 41. Finally, the traction rope 15 goes around the bottom of the first turntable 11 to form a loop, and is taut and in close contact with the surface of each guide wheel 41. When the cable is heavy, the traction rope 15 and guide wheels 41 can be replaced with a sprocket and chain structure to drive the lifting block 3 to rotate around the corresponding cable support.

[0037] like Figure 1 and Figure 3 Two hanging plates 5 are also installed at the corner of the cable trench. The hanging plates 5 are bolted to the top of the cable trench. The two hanging plates 5 are fixed to two perpendicular top surfaces of the cable trench. The two hanging plates 5 are together fixed to a reversing pipe 6. The reversing pipe 6 is an L-shaped pipe. Both ends of the reversing pipe 6 have waist-shaped openings 61. Several first guide rollers 62 are rotatably connected to the inner wall of the reversing pipe 6. The first guide rollers 62 on both sides are directly opposite each other.

[0038] like Figure 4 , Figure 5 and Figure 6 The pull-out assembly 2 includes a protective shell 21, within which a sliding shell 22 is slidably disposed. A rodless hydraulic cylinder 23 is installed on one side of the protective shell 21, connecting to the sliding shell 22 and driving the sliding shell 22 to move along the length of the protective shell 21. A guide groove 221 is provided at the end of the sliding shell 22 near the cable reel. The guide groove 221 is a conical groove, and its inner diameter gradually decreases along the direction near the cable reel. A transmission rod 24 is fitted inside the sliding shell 22. Three clamping grooves 241 are equidistantly spaced along the circumference of the cable reel at one end. Each clamping groove 241 contains a clamping ball 25, which contacts the guide groove 221. A spring 26 is fitted onto the end of the conveyor rod 24 away from the cable reel, fixing one end of the spring 26 to the conveyor rod 24. A cover 27 is threadedly connected to the end of the sliding shell 22 away from the cable reel. The cover 27 presses against the other end of the spring 26, compressing it. The end of the conveyor rod 24 away from the cable reel extends out from the cover 27. The cable sequentially enters the protective shell 21 and the sliding shell 22, passes through the conveyor rod 24, and then exits from the sliding shell 22 and the protective shell 21, with the clamping ball 25 contacting the cable surface. Several second guide rollers 28 are rotatably connected to the inner bottom wall of the protective shell 21 away from the cable reel. The second guide rollers 28 are equidistantly arranged along the length of the protective shell 21, with their axes located below the cable and perpendicular to it.

[0039] When laying cables for the second time, first manually insert the cable into the protective shell 21 and pass the cable through the conveyor rod 24. Then rotate the rotating nut 13, observe the scale 34 of the guide rod 32, and move the adjusting screw 16 along its own axis. According to the position of the cable laid on the cable support, accurately adjust the relative position of the lifting block 3 and the corresponding cable support.

[0040] Then, the rodless hydraulic cylinder 23 is activated. The spring 26 always provides a thrust to the transmission rod 24 toward the cable reel, causing the sliding shell 22 to move along the length of the protective shell 21. When the sliding shell 22 moves away from the cable reel, the guide groove 221 of the sliding shell 22 causes the clamping ball 25 to clamp the cable. The thrust of the spring 26 makes the clamping ball 25 press more tightly against the guide groove 221, and the guide groove 221 and the clamping ball 25 press tightly against each other, so that the sliding shell 22 drives the transmission rod 24 to pull the cable away from the cable reel. When the sliding shell 22 moves closer to the cable, the guide groove 221 and the clamping ball 25 are momentarily disengaged. However, the frictional force of the cable on the clamping ball 25 away from the cable reel counteracts the thrust of the spring 26, so that the clamping ball 25 no longer clamps the cable and does not squeeze against the inner wall of the guide groove 221. When the sliding shell 22 moves closer to the cable reel, the clamping ball 25 rolls on the cable, so that the cable remains stationary when the sliding shell 22 and the conveyor rod 24 move closer to the cable reel. Furthermore, when the sliding shell 22 moves away from the cable reel again, the clamping ball 25 can immediately clamp the cable. The sliding shell 22 will not have relative displacement with the cable, realizing the intermittent pulling and forward transmission of the cable.

[0041] After the cable is delivered to the first cable support, the motor 14 is started. The motor 14 drives the corresponding turntable 11 to rotate, and the traction rope 15 moves. Since the traction rope 15 and several turntables 11 are in a taut state, the traction rope 15 drives several turntables 11 to rotate at the same time. Several turntables 11 drive the rotating sleeve 12 to rotate. The rotating sleeve 12 drives the adjusting screw 16 and the lifting block 3 to rotate around the corresponding cable.

[0042] Each time the lifting block 3 rotates around the cable bracket once, the lifting block 3 lifts the cable on the cable bracket and makes the cable lock into the tray 31. Then the lifting block 3 drives the cable forward and falls to place it on another cable bracket. Each time the conveyor rod 24 pulls the cable forward, several lifting blocks 3 will rotate at the same time to lift the cable and place it forward on the cable bracket. When the cable is transferred to the corner, it continues to be lifted and fed in. The cable first rises and extends into the reversing pipe 6 through the waist-shaped opening 61. Then the cable descends and continues to extend into the reversing pipe 6. After passing the first guide roller 62, the cable changes direction. Finally, the cable extends out from the waist-shaped opening 61 at the other end of the reversing pipe 6, thereby realizing the automatic turning of the cable at the corner of the cable trench. After the cable is laid on the last cable support, the motor 14 and the rodless hydraulic cylinder 23 are turned off to complete the secondary laying of the cable.

[0043] The lifting block 3 first lifts the cable and then feeds it forward, reducing the friction between the cable and the cable support during the forward laying process. The method of pulling and lifting to advance replaces the traditional cable traction laying method, which reduces the friction on the cable and enhances the protection of the cable during the secondary cable laying process. It also reduces the wear on the paint on the surface of the cable support such as channel steel and angle iron, and reduces the wear on the cable.

[0044] The implementation principle of this application embodiment is as follows: the pull-out component 2 first gradually pulls the cable to the cable bracket, and the drive component 1 drives several lifting blocks 3 to rotate around the axis of the corresponding cable bracket. Whenever the cable moves forward a certain distance, the lifting block 3 first lifts the cable and then pushes the cable forward, reducing the friction between the cable and the cable bracket during the forward laying process. The pull-out and lifting method replaces the traditional cable traction laying method, reducing the friction on the cable and strengthening the protection of the cable during the secondary cable laying process. This reduces the wear on the paint on the surface of the cable brackets such as channel steel and angle iron, and reduces the wear on the cable.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A secondary cable laying protection auxiliary device for reducing line loss, characterized in that: It includes a drive assembly (1) and several lifting blocks (3). Several lifting blocks (3) are simultaneously arranged on the drive assembly (1). Each lifting block (3) corresponds to a cable bracket. The drive assembly (1) simultaneously drives all lifting blocks (3) to rotate around their respective cable brackets. The lifting blocks (3) rotate and repeatedly lift the cable and gradually push the cable forward. The cable in the cable reel is gradually pulled to the cable bracket by the pull-out assembly (2). The drive assembly (1) includes a plurality of turntables (11); A rotating sleeve (12) is provided on the turntable (11), and an adjusting screw (16) is connected to the lifting block (3). A rotating nut (13) is rotatably connected to the opening of the rotating sleeve (12), and the adjusting screw (16) is inserted into the rotating sleeve (12) and threadedly connected to the rotating nut (13). The lifting block (3) has a groove (31) and the cable is located in the groove (31). The rotating sleeve (12) is connected to a guide sleeve (33). The adjusting screw (16) is connected to a guide rod (32). One end of the guide rod (32) is inserted into the guide sleeve (33). The guide rod (32) is provided with a scale (34). The pull-out assembly (2) includes a protective shell (21), a sliding shell (22) slidably disposed inside the protective shell (21), a transmission rod (24) slidably disposed inside the sliding shell (22), a plurality of clamping grooves (241) being provided on the end of the transmission rod (24) facing the cable reel, and a clamping ball (25) being placed in each clamping groove (241). A guide groove (221) is provided on the end of the sliding shell (22) facing the cable. A rodless hydraulic cylinder (23) is provided on the protective shell (21) for moving the sliding shell (22). The cable passes through the protective shell (21), the sliding shell (22), and the transmission rod (24) in sequence, and then passes out from the transmission rod (24), the sliding shell (22), and the protective shell (21) in sequence. When the sliding shell (22) moves away from the cable reel, the guide groove (221) pushes several clamping balls (25) to clamp the cable simultaneously. The clamping balls (25) and the guide groove (221) press against each other, causing the cable, the transmission rod (24), and the sliding shell (22) to move away from the cable reel simultaneously.

2. The secondary cable laying protection auxiliary device for reducing line loss according to claim 1, characterized in that: The turntable (11) corresponds to the cable bracket one by one. The turntable (11) is rotatably mounted on the corresponding cable bracket. The lifting block (3) corresponds to the turntable (11) one by one. The lifting block (3) is mounted on the turntable (11). A traction rope (15) is wound around a number of turntables (11). The traction rope (15) is taut with a number of turntables (11). One of the turntables (11) is connected to a motor (14).

3. The secondary cable laying protection auxiliary device for reducing line loss according to claim 2, characterized in that: Two temporary supports (4) are installed at each corner of the cable trench. Each of the two temporary supports (4) is equipped with a guide wheel (41). The guide wheels (41) of the two temporary supports (4) are divided into two groups. The forward end of the traction rope (15) passes through one group of guide wheels (41), and the backward end of the traction rope (15) passes through the other group of guide wheels (41).

4. The auxiliary device for reducing line loss during secondary cable laying as described in claim 1, characterized in that: Each corner of the cable trench is bolted with a hanging plate (5), which is fixed to the top of the cable trench. The hanging plate (5) is connected to a reversing pipe (6), and the two ends of the reversing pipe (6) are provided with waist-shaped openings (61). A first guide roller (62) is provided at the corner inside the reversing pipe (6) to facilitate cable turning.

5. The secondary cable laying protection auxiliary device for reducing line loss according to claim 1, characterized in that: A spring (26) is provided at the end of the sliding shell (22) away from the cable reel. The spring (26) is sleeved on the transmission rod (24) and is always in a compressed state.

6. The secondary cable laying protection auxiliary device for reducing line loss according to claim 5, characterized in that: The sliding shell (22) is threaded to a cover (27) at the end away from the cable reel, one end of the transmission rod (24) extends out of the cover (27), and the spring (26) is fixed to the cover (27).

7. The auxiliary device for reducing line loss during secondary cable laying as described in claim 1, characterized in that: The inner bottom wall of the protective shell (21) is rotatably provided with a plurality of second guide rollers (28), the axis of the second guide rollers (28) being perpendicular to the cable.

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