Fixture for replacing insulator chain

Abstract

The utility model relates to the technical field of electrical equipment tools, in particular to a fixture for replacing an insulator chain, which comprises two force application blocks, a clamping device and a clamping device, an accommodating space is reserved between the two force application blocks, and an accommodating cavity with an opening at one end is formed in each force application block; the two locking rings are located in the containing cavity, the locking rings are rotationally connected with the force application block, feeding notches are reserved in the locking rings, and after the locking rings rotate, the feeding notches can communicate with an opening of the containing cavity; the adjusting mechanism is used for adjusting the distance between the two force application blocks and is connected with the force application blocks; according to the invention, through cooperation of the force application block and the locking ring, an anti-falling structure for accommodating the metal head on the insulator can be formed, and the locking ring only rotates in the accommodating cavity, so that the possibility of part falling does not exist in the process of locking the insulator.

Description

Technical Field

[0001] This application relates to the field of electrical equipment and tools, and in particular to a clamp for replacing insulator strings. Background Technology

[0002] Because the production and use of electricity are unevenly distributed across regions, power transmission is necessary. To reduce heat loss caused by current and lower material costs for long-distance power transmission, ultra-high voltage power transmission is used. In order to maintain insulation between the transmission line and the tower while fixing the transmission line, insulator strings are used to suspend and support the transmission line.

[0003] Insulator strings need to be replaced after a period of use. Existing technology discloses a prefabricated tension insulator string replacement tool, which includes a tower head end clamp, a conductor end clamp, and a tension unit. The tower head end clamp includes a connecting buckle and force-bearing components connected to both sides of the connecting buckle; the conductor end clamp includes a fixing buckle and tension components disposed at both ends of the fixing buckle; and the tension unit, connected between the tower head end clamp and the conductor end clamp, includes a support rod and a tension rod assembly. The connecting buckle includes a connecting buckle plate, a fastening block, and a limiting block. The fastening block and the connecting buckle plate can be fitted together, and their mating end sidewalls have limiting grooves. The limiting block can be fitted into the limiting grooves. The force-bearing components include a force-bearing arc plate and a connecting end. The force-bearing arc plate has a connecting hole on its sidewall. One end of the force-bearing arc plate is hinged to the end sidewall of the connecting buckle, and the connecting end is detachably connected to the connecting hole.

[0004] Regarding the aforementioned technologies, during use, the metal head on the insulator is first positioned in the limiting groove on the connecting plate. Then, the fastening block is fixed to the connecting plate with bolts, and the entrance end of the limiting groove is sealed to prevent the connecting buckle from separating from the insulator. However, this operation method is relatively cumbersome, requiring the use of corresponding bolt tightening tools. Furthermore, the fastening block is separated from the connecting plate, and there is a possibility of it accidentally falling off during operation. Utility Model Content

[0005] To simplify the operation of the clamp and reduce the possibility of parts falling off during installation, this application provides a clamp for replacing insulator strings.

[0006] The clamp for replacing insulator strings provided in this application adopts the following technical solution:

[0007] A clamp for replacing insulator strings, comprising:

[0008] Two force-applying blocks are provided, with a space between them, and each force-applying block has a cavity with an opening at one end.

[0009] Two locking rings are located inside the receiving cavity. The locking rings are rotatably connected to the force-applying block, and the locking rings have a feeding notch. After the locking rings are rotated, the feeding notch can be connected to the opening of the receiving cavity.

[0010] An adjustment mechanism for adjusting the distance between two force-applying blocks, the adjustment mechanism being connected to the force-applying blocks.

[0011] By employing the above technical solution, force is applied to the locking ring, connecting the material inlet on the locking ring with the opening of the receiving cavity. Then, force is applied to the force-applying block, causing the metal head on the insulator to enter the inner cavity of the locking ring. The force-applying block is then rotated, causing relative rotation between the locking ring and the force-applying block as the insulator abuts against it. This continues until the material inlet on the locking ring is no longer connected to the opening of the receiving cavity. At this point, an external force is applied to the two force-applying blocks through an adjusting mechanism, reducing the distance between them and loosening the insulator string located between the two force-applying blocks. The insulator string replacement can then be completed. The designed insulator string replacement clamp, through the cooperation of the force-applying block and the locking ring, forms an anti-fall-off structure for accommodating the metal head on the insulator. The locking ring itself only rotates within the receiving cavity, eliminating the possibility of parts falling off during the insulator locking process. Furthermore, the fixing operation of the clamp and the insulator is relatively simple. The adjusting mechanism allows the two force-applying blocks to move closer together, thereby loosening the insulator string to be replaced, facilitating the insulator string replacement operation.

[0012] In one specific implementation scheme, the force-applying block has an arc-shaped groove that communicates with the receiving cavity, and a return spring is connected inside the arc-shaped groove. The return spring is connected to the connecting part of the locking ring that extends into the arc-shaped groove, so that the feeding notch on the locking ring communicates with the opening of the receiving cavity.

[0013] By adopting the above technical solution, the designed reset spring can keep the feeding notch on the locking ring connected to the receiving cavity, thereby facilitating the rapid entry of the metal head on the insulator into the inner cavity of the locking ring and realizing the connection between the insulator and the clamp.

[0014] In one specific implementation scheme, the force-applying block includes

[0015] The force-applying base, the receiving cavity and the arc-shaped groove are both formed on the force-applying base, the force-applying base and the locking ring can rotate relative to each other, and the force-applying base is connected to the adjustment mechanism;

[0016] The sealing part is detachably and fixedly connected to the force-applying base, and the sealing part is used to block the opening on one side of the receiving cavity along the movement direction of the force-applying base. The sealing part is located between the two force-applying bases, and a strip-shaped opening groove is provided on the sealing part.

[0017] By adopting the above technical solution, the designed force-applying block can use the force-applying base as the basis for opening the cavity and arc groove, and the sealing part can block the opening at one end of the locking ring along the movement direction of the force-applying base, thereby facilitating the replacement of the locking ring while preventing the locking ring from falling off from the side.

[0018] In one specific implementation, a friction rubber strip is connected to the inner circumference of the locking ring, and multiple friction grooves are integrally formed on the friction rubber strip.

[0019] By adopting the above technical solution, the designed friction rubber strip can facilitate the insulator to apply force to the locking ring, thereby realizing the relative rotation between the locking ring and the force-applying block.

[0020] In one specific implementation, the adjustment mechanism includes

[0021] Two flaring frames are connected to the force-applying block;

[0022] Two telescopic rods are provided, with each end of the telescopic rod connected to one of the two flared frames, and a working area for accommodating insulator strings is formed between the two telescopic rods.

[0023] By adopting the above technical solution, the designed adjustment mechanism, through the cooperation of the flared frame and the telescopic rod, can bring the two force-applying blocks closer to each other, thereby completing the relaxation and replacement operation of the insulator string to be replaced.

[0024] In one specific implementation, the flaring frame has multiple locking holes, the distance between the multiple locking holes and the locking ring gradually increases, and the telescopic rod is bolted to the flaring frame through the locking holes.

[0025] By adopting the above technical solution, the designed locking hole can be adapted to insulators of different diameters by changing the connection position between the telescopic rod and the locking hole on the flared frame.

[0026] In one specific implementation, the force-applying block is connected to an anti-rotation rubber strip, and the locking ring has multiple locking protrusions integrally formed on the side away from the other locking ring. The locking ring is able to slide relative to the force-applying block along the rotation axis of the locking ring so that the locking protrusions are embedded in the anti-rotation rubber strip.

[0027] By adopting the above technical solution, when the adjusting mechanism applies force to the force-applying blocks so that the two force-applying blocks move closer to each other, the locking ring will slide relative to the force-applying blocks along the direction of movement of the force-applying blocks until the locking protrusion at one end of the locking ring sinks into the anti-rotation rubber strip. At this time, the possibility of the locking ring rotating again during the replacement of the insulator string, which would lead to the failure of the clamp, is reduced, thus ensuring the safety of the replacement of the insulator string.

[0028] In one specific implementation, the anti-rotation rubber strip is located between the locking ring and the connection area of ​​the flared frame and the force-applying block.

[0029] By adopting the above technical solutions, the structural stability of the force-applying block can be guaranteed.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. The designed clamp for replacing insulator strings, through the cooperation of the force-applying block and the locking ring, can form a structure to prevent the metal head on the insulator from falling off. The locking ring itself only rotates within the receiving cavity, so there is no possibility of parts falling off during the locking process of the insulator. Furthermore, the fixing operation between the clamp and the insulator is relatively simple. Through the adjustment mechanism, the two force-applying blocks can be brought closer to each other, thereby loosening the insulator string to be replaced, so as to complete the insulator string replacement operation.

[0032] 2. The designed clamp for replacing insulator strings, through a return spring, can keep the feeding notch on the locking ring connected to the receiving cavity, thereby facilitating the rapid entry of the metal head on the insulator into the inner cavity of the locking ring, and realizing the connection between the insulator and the clamp.

[0033] 3. The designed clamp for replacing insulator strings has a locking ring that slides relative to the force blocks along the direction of their movement when the adjusting mechanism applies force to the force blocks, until the locking protrusion at one end of the locking ring sinks into the anti-rotation rubber strip. At this point, the possibility of the locking ring rotating again during the replacement of the insulator string is reduced, thus ensuring the safety of the replacement of the insulator string. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the clamp for replacing insulator strings according to an embodiment of this application.

[0035] Figure 2 yes Figure 1 The diagram shows a partial structural illustration, mainly illustrating the structure of the force-applying block and the locking ring.

[0036] Figure 3 Is Figure 1 A sectional view after adding an arc-shaped groove and a return spring to the original structure.

[0037] Figure 4 Is Figure 3 A schematic diagram of the structure after adding friction rubber strips and anti-rotation rubber strips to the basic structure.

[0038] Figure 5 yes Figure 4 A schematic diagram of the explosion structure.

[0039] Explanation of reference numerals in the attached drawings: 1. Force-applying block; 11. Force-applying base; 111. Receiving cavity; 112. Arc-shaped groove; 12. Sealing part; 2. Locking ring; 21. Locking protrusion; 3. Adjustment mechanism; 31. Flaring frame; 32. Telescopic rod; 33. Locking hole; 4. Return spring; 5. Friction rubber strip; 6. Anti-rotation rubber strip. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0041] This application discloses a clamp for replacing insulator strings.

[0042] Reference Figure 1 and Figure 2 A clamp for replacing insulator strings includes two force-applying blocks 1 and two locking rings 2. A receiving space is provided between the two force-applying blocks 1 to accommodate the insulator string to be replaced. Each force-applying block 1 has a receiving cavity 111 with an opening at one end. The metal head of the insulator enters the receiving cavity 111 through the opening. The two locking rings 2 are respectively located within the receiving cavities 111 on the two force-applying blocks 1, and are rotatably connected to the force-applying blocks. Each locking ring 2 has a feeding notch, which, when rotated, allows the feeding notch to engage with the receiving cavity. The opening of cavity 111 is connected so that the metal head on the insulator can enter the inner cavity of the locking ring 2 through the feeding notch; force is applied to the locking ring 2 so that the feeding notch on the locking ring 2 is connected to the opening of the receiving cavity 111, and then force is applied to the force block 1 so that the metal head on the insulator enters the inner cavity of the locking ring 2. Then the force block 1 is rotated. Since the insulator and the locking ring 2 are in contact at this time, the locking ring 2 and the force block 1 rotate relative to each other until the feeding notch on the locking ring 2 is no longer connected to the opening of the receiving cavity 111, thus completing the connection between the insulator and the clamp.

[0043] Reference Figure 1 At this time, in order to bring the two force-applying blocks 1 closer to each other, thereby applying force to the insulator and relaxing the insulator string located in the receiving space, and thus completing the replacement of the insulator string, the clamp for replacing the insulator string also includes an adjustment mechanism 3, which is connected to the force-applying blocks 1 and is used to adjust the distance between the two force-applying blocks 1.

[0044] Reference Figure 1Specifically, the adjustment mechanism 3 includes two flared frames 31 and two telescopic rods 32. The flared frames 31 are welded and fixed to the force-applying block 1 or bolted together. The two telescopic rods 32 are located on both sides of the insulator string to form a working area for accommodating the insulator string. The two ends of the telescopic rods 32 are connected to the two flared frames 31 respectively. In this application, the telescopic rods 32 can be electric telescopic rods 32, pneumatic telescopic rods 32, or other structures that can achieve telescopic movement. In this embodiment, the telescopic rods 32 are preferably electric telescopic rods 32, which are powered by a portable power source.

[0045] Reference Figure 1 To further expand the applicability of the clamp to insulators of different diameters, the flared frame 31 is provided with multiple locking holes 33. The distance between the multiple locking holes 33 and the locking ring 2 gradually increases, and the telescopic rod 32 is bolted to the flared frame 31 through the locking holes 33. In this application, the number of locking holes 33 on the flared frame 31 can be four, six, or eight, as long as it can increase the applicability of the clamp. In this embodiment, the number of locking holes 33 on the flared frame 31 is six.

[0046] Reference Figure 2 and Figure 3 Furthermore, in order to keep the material inlet on the locking ring 2 connected to the opening of the receiving cavity 111 before use, so as to improve the efficiency of construction operations, an arc-shaped groove 112 is provided on the force-applying block 1. The arc-shaped groove 112 is connected to the receiving cavity 111, and a return spring 4 is welded and fixed in the arc-shaped groove 112. The return spring 4 is welded to the connecting part of the locking ring 2 that extends into the arc-shaped groove 112, so that the material inlet of the locking ring 2 is connected to the opening of the receiving cavity 111 when it is not subjected to external force.

[0047] Reference Figure 4 and Figure 5 Furthermore, to facilitate the placement and replacement of the locking ring 2, the force-applying block 1 includes a force-applying base 11 and a sealing part 12. The receiving cavity 111 and the arc-shaped groove 112 are both opened on the force-applying base 11, and the force-applying base 11 and the locking ring 2 can rotate relative to each other. The force-applying base 11 is connected to the flaring frame 31, and the end of the force-applying base 11 near the flaring frame 31 has a strip-shaped opening groove. The sealing part 12 is detachably fixed to the force-applying base 11 by bolts, and the sealing part 12 is used to block the opening on one side of the receiving cavity 111 along the movement direction of the force-applying base 11. The sealing part 12 is located between the two force-applying bases 11, and the sealing part 12 has a strip-shaped opening groove for the metal head on the insulator to extend into.

[0048] Reference Figure 4 and Figure 5Furthermore, a friction rubber strip 5 is bonded and fixed to the inner circumference of the locking ring 2. Multiple friction grooves are integrally formed on the friction rubber strip 5 to increase the interaction force between the metal head on the insulator and the locking ring 2, thereby facilitating the relative rotation between the locking ring 2 and the force-applying base 11, thus completing the locking between the metal head on the insulator and the clamp structure formed by the locking ring 2 and the force-applying base 11.

[0049] Reference Figure 4 and Figure 5 Furthermore, an anti-rotation rubber strip 6 is bonded and fixed to the force-applying substrate 11. The anti-rotation rubber strip 6 is located on the side of the sealing part 12 away from the other sealing part 12, and the locking ring 2 is integrally formed with multiple locking protrusions 21 on the side away from the other locking ring 2. The multiple locking protrusions 21 are distributed in a circle, and the locking ring 2 can slide relative to the force-applying substrate 11 along the rotation axis of the locking ring 2, thereby causing the locking protrusions 21 to sink into the anti-rotation rubber strip 6, thereby reducing the possibility of relative rotation between the locking ring 2 and the force-applying substrate 11 during the insulator string replacement operation. In addition, the anti-rotation rubber strip 6 is located between the locking ring 2 and the connection area between the flared frame 31 and the force-applying substrate 11, so as to strengthen the weak rear part of the force-applying substrate 11.

[0050] The implementation principle of the insulator string replacement clamp in this application embodiment is as follows: Force is applied to the locking ring 2, causing the feeding notch on the locking ring 2 to connect with the opening of the receiving cavity 111. Then, force is applied to the force-applying block 1, causing the metal head on the insulator to enter the inner cavity of the locking ring 2. Then, the force-applying block 1 is rotated. Since the insulator abuts against the locking ring 2 at this time, the locking ring 2 and the force-applying block 1 rotate relative to each other until the feeding notch on the locking ring 2 is no longer connected to the opening of the receiving cavity 111. At this point, external force is applied to the two force-applying blocks 1 through the adjusting mechanism 3, causing the two force-applying blocks 1 to... As the distance between the two force-applying blocks 1 decreases, the insulator string located between the two force-applying blocks 1 loosens, and then the replacement of the insulator string can be completed. The force-applying block 1 and the locking ring 2 can cooperate to form an anti-fall-off structure for accommodating the metal head on the insulator, and the locking ring 2 itself only rotates in the accommodating cavity 111. There is no possibility of parts falling off during the locking of the insulator, and the fixing operation of the clamp and the insulator is also relatively simple. The two force-applying blocks 1 can be brought closer to each other by the adjustment mechanism 3, thereby loosening the insulator string to be replaced, so as to complete the replacement of the insulator string.

[0051] 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 clamp for replacing insulator strings, characterized in that: include: Two force-applying blocks (1), with a space between the two force-applying blocks (1), and a receiving cavity (111) with an opening at one end is provided on each force-applying block (1); Two locking rings (2) are located in the receiving cavity (111). The locking rings (2) are rotatably connected to the force-applying block (1), and the locking rings (2) have a feeding notch. After the locking rings (2) are rotated, the feeding notch can be connected to the opening of the receiving cavity (111). An adjustment mechanism (3) for adjusting the distance between the two force-applying blocks (1), the adjustment mechanism (3) being connected to the force-applying blocks (1).

2. The clamp for replacing insulator strings according to claim 1, characterized in that: The force-applying block (1) has an arc-shaped groove (112) that communicates with the receiving cavity (111). A return spring (4) is connected inside the arc-shaped groove (112). The return spring (4) is connected to the connecting part of the locking ring (2) that extends into the arc-shaped groove (112) so that the feeding notch on the locking ring (2) communicates with the opening of the receiving cavity (111).

3. The clamp for replacing insulator strings according to claim 2, characterized in that: The force-applying block (1) includes The force-applying base (11) has the receiving cavity (111) and the arc-shaped groove (112) both formed on it. The force-applying base (11) and the locking ring (2) can rotate relative to each other, and the force-applying base (11) is connected to the adjustment mechanism (3). The sealing part (12) is detachably and fixedly connected to the force-applying base (11), and the sealing part (12) is used to block the opening on one side of the receiving cavity (111) along the movement direction of the force-applying base (11). The sealing part (12) is located between the two force-applying bases (11), and a strip-shaped opening groove is provided on the sealing part (12).

4. The clamp for replacing insulator strings according to claim 1, characterized in that: The inner circumference of the locking ring (2) is connected to a friction rubber strip (5), and multiple friction patterns are integrally formed on the friction rubber strip (5).

5. The clamp for replacing insulator strings according to any one of claims 1-4, characterized in that: The adjustment mechanism (3) includes Two flaring frames (31) are connected to the force-applying block (1); Two telescopic rods (32) are connected at both ends to two flared frames (31), and a working area for accommodating insulator strings is formed between the two telescopic rods (32).

6. The clamp for replacing insulator strings according to claim 5, characterized in that: The flaring frame (31) has multiple locking holes (33), the distance between the multiple locking holes (33) and the locking ring (2) gradually increases, and the telescopic rod (32) is bolted to the flaring frame (31) through the locking holes (33).

7. The clamp for replacing insulator strings according to claim 5, characterized in that: The force-applying block (1) is connected to an anti-rotation rubber strip (6). The locking ring (2) is integrally formed with multiple locking protrusions (21) on the side away from the other locking ring (2). The locking ring (2) can slide relative to the force-applying block (1) along the rotation axis of the locking ring (2) so that the locking protrusions (21) are embedded in the anti-rotation rubber strip (6).

8. The clamp for replacing insulator strings according to claim 7, characterized in that: The anti-rotation rubber strip (6) is located between the locking ring (2) and the connection area of ​​the flared frame (31) and the force-applying block (1).

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