Device for replacing composite cross arm post insulator and use method

Abstract

The invention discloses a device for replacing a post insulator of a composite cross arm and a use method, and the device comprises a tower body which is used for supporting a high-voltage power transmission line and is provided with the composite cross arm, a supporting assembly which comprises a connecting piece connected with the tower body and a fixing piece connected with a connecting fitting of the composite cross arm, the fixing piece can be far away from or close to the connecting piece in the axial direction of the connecting piece, the connecting piece comprises a connecting plate making contact with the tower body and a connecting disc fixedly connected with the connecting plate, a connecting interval used for containing the tower body structure is arranged between the connecting plate and the connecting disc, a through hole is formed in the connecting plate, and the through hole is communicated with the connecting plate. A connecting rod is arranged on the side, away from the connecting plate, of the connecting disc, and the connecting rod is fixedly sleeved with a reinforcing cross rod fixedly connected with the connecting disc. The supporting assembly has the beneficial effects that through cooperation of the fixing piece, the connecting piece and other assemblies, the supporting assembly bears the work of supporting the power transmission wire in the supporting period of the composite cross arm, and the situation that power supply is affected due to the fact that the power transmission wire is lack of supporting is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power auxiliary equipment, and particularly relates to a device for replacing composite cross arm support post insulator and a use method. BACKGROUND

[0002] Because composite materials have the advantages of light weight, high strength, corrosion resistance, good electrical insulation performance, environmental performance, good designability and the like, composite cross arms made of composite materials are widely applied in the field of power transmission towers. The composite cross arm may have decreased insulation performance due to environmental factors such as sunlight, rain, dust and the like and high voltage. Therefore, the composite cross arm needs to be replaced after being used for a period of time, but during the replacement, the power transmission conductor connected with the composite cross arm is prone to lack of support and affect power supply. In view of this, the present application provides a device for replacing a composite cross arm support post insulator and a use method. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is that during replacement of the composite cross arm, the power transmission conductor is prone to lack of support and affect power supply.

[0004] To solve the above technical problem, the present application provides the following technical scheme: a device for replacing a composite cross arm support post insulator, comprising a tower body for supporting a high-voltage power transmission line, a composite cross arm is arranged on the tower body, a support assembly comprising a connecting piece connected with the tower body and a fixing piece connected with a connecting fitting of the composite cross arm, and the fixing piece can move away from or close to the connecting piece along the axial direction of the connecting piece.

[0005] As a preferred scheme of the device for replacing a composite cross arm support post insulator, the connecting piece comprises a connecting plate in contact with the tower body and a connecting disc fixedly connected with the connecting plate, and a connecting interval for accommodating the structure of the tower body is arranged between the connecting plate and the connecting disc.

[0006] As a preferred scheme of the device for replacing a composite cross arm support post insulator, a through hole is arranged on the connecting plate, and a connecting rod is arranged on the side of the connecting disc away from the connecting plate.

[0007] As a preferred scheme of the device for replacing a composite cross arm support post insulator, a reinforcing cross rod fixedly connected with the connecting disc is arranged on the outer fixing sleeve of the connecting rod.

[0008] As a preferred scheme of the device for replacing a composite cross arm support post insulator, the fixing piece comprises a fixing plate and a fixing hole arranged on the fixing plate.

[0009] As a preferred scheme of the device for replacing the composite cross arm support post insulator, wherein: a telescopic rod for controlling the movement of the fixing member is arranged between the fixing member and the connecting member, and the output end of the telescopic rod is fixedly connected with the fixing plate.

[0010] As a preferred scheme of the device for replacing the composite cross arm support post insulator, wherein: an adjusting assembly for adjusting the ground clearance of the composite cross arm is arranged on the tower body, and the adjusting assembly comprises a pulley block detachably arranged on the tower body and a transmission rope wound on the pulley block.

[0011] As a preferred scheme of the device for replacing the composite cross arm support post insulator, wherein: a fixing rope is arranged on the transmission rope, and the first rope sleeve connected with the composite cross arm is arranged at one end of the fixing rope and one end of the transmission rope, and the other end of the transmission rope extends to the ground.

[0012] As a preferred scheme of the device for replacing the composite cross arm support post insulator, wherein: a second rope sleeve connected with the composite cross arm is arranged between the two first rope sleeves, and a traction rope is connected with the second rope sleeve, and one end of the traction rope extends to the ground.

[0013] The application also provides a use method, which comprises the device for replacing the composite cross arm support post insulator, and the use method comprises the following steps:

[0014] S1, the pulley block is arranged on the tower body, and the arrangement position is higher than the composite cross arm, then the transmission rope is slidably connected with the pulley block by passing through the pulley block, and one end of the transmission rope falls to the ground;

[0015] S2, the second rope sleeve is arranged on the composite cross arm, one end of the traction rope connected with the second rope sleeve falls to the ground, then the first rope sleeve connected with the transmission rope and the second rope sleeve connected with the fixing rope are arranged on the two ends of the composite cross arm, and the first rope sleeve is fixedly connected with the composite cross arm;

[0016] S3, the arrangement position on the tower body is arranged in the connecting interval, then the support assembly is arranged on the tower body by the cooperation of the mounting bolt and the perforation, the telescopic rod is started, the fixing plate is driven to the composite cross arm connecting fitting, and the fixing plate is reliably connected with the composite cross arm connecting fitting by the mounting bolt and the fixing hole;

[0017] S4, the worker pulls up the composite cross arm through the transmission rope, and supports the pressure borne by the composite cross arm, then the worker releases the connecting bolt at the two ends of the composite cross arm, the telescopic rod is started, the fixing plate is retracted, and the support assembly bears the pressure of the high-voltage power transmission line;

[0018] S5, the transmission rope is slowly loosened, the composite cross arm is slowly lowered, and the falling position of the composite cross arm is adjusted through the second rope sleeve and the traction rope.

[0019] The beneficial effect of the present application is that the support assembly bears the work of supporting the power transmission conductor during the support of the composite cross arm, avoiding the situation that the power supply is affected due to the lack of support. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, but not limit the present application. Among them:

[0021] Figure 1 The support assembly structure schematic diagram in the application is shown;

[0022] Figure 2 The use state structure schematic diagram in the application is shown. DETAILED DESCRIPTION

[0023] In order to make the skilled in the art better understand the present application, the present application will be further described in detail below in combination with specific embodiments and drawings.

[0024] The terms used in the present application are those general terms currently widely used in the art in consideration of the functions about the present application, but these terms can be changed according to the intention of the person skilled in the art, precedent or new technology in the art. In addition, specific terms can be selected by the applicant, and in this case, the detailed meaning thereof will be described in the detailed description of the present application. Therefore, the terms used in the specification should not be understood as simple names, but based on the meaning of the terms and the overall description of the present application.

[0025] The present embodiment provides a device for replacing composite cross arm support insulator and a use method, as shown in Figure 1 As shown, the support assembly 2 includes a connecting piece 22 connected with the tower body 1 and a fixing piece 21 connected with the composite cross arm connecting fitting, and a telescopic rod 23 for controlling the movement of the fixing piece 21 is arranged between the connecting piece 22 and the fixing piece 21.

[0026] In the use process, the support assembly 2 is first fixed on the tower body 1 through the connecting piece 22, and then the telescopic rod 23 is started to make the fixing plate 211 close to the composite cross arm connecting fitting, and the workers enter the composite cross arm high-voltage end equipotential position by the way of overlapping insulation flat ladder, so that the fixing plate 211 is reliably connected with the composite cross arm connecting fitting under the cooperation of the fixing hole 212 and the mounting bolt. At this time, the telescopic rod 23 is given an order, and the telescopic rod 23 starts to shrink, so that the pressure of the composite cross arm support insulator from the power transmission conductor is completely borne by the support assembly 2, so that the power transmission conductor will not appear the situation that the power supply is affected due to the lack of support during the replacement of the composite cross arm.

[0027] As Figure 1 shown, the connecting plate 221 is fixedly connected with the connecting disc 222, and a connecting interval 223 for accommodating the mounting position on the tower body 1 is arranged between the connecting plate 221 and the connecting disc 222, and a plurality of through holes 224 are arranged on the connecting plate 221, so that in the installation process, the mounting position on the tower body 1 can be placed into the connecting interval 223 first, and then the connecting disc 222 and the tower body 1 are connected together by using the mounting bolt matched with the through hole 224, and because the connecting rod 225 fixedly connected with the connecting disc 222 is fixedly connected with the telescopic rod 23, as Figure 1 shown, the fixed installation of the support assembly 2 on the tower body 1 is completed.

[0028] As Figure 1 shown, a reinforcing cross rod 226 fixedly connected with the connecting disc 222 is arranged on the outer fixing sleeve of the connecting rod 225, and the reinforcing cross rod 226 can increase the bending stiffness of the connecting rod 225 and reduce the stress concentration at the connecting position of the connecting rod 225 and the connecting disc 222, thereby improving the carrying capacity of the support assembly 2.

[0029] As Figure 2 shown, the pulley block 31 is arranged to be detachably mounted on the tower body 1, and the transmission rope 32 is wound on the pulley block 31, one end of the transmission rope 32 is provided with a fixed rope 34, and the other end extends to the ground, and the end of the transmission rope 32 close to the fixed rope 34 and the end of the fixed rope 34 are provided with a first rope sleeve 33 fixedly sleeved with the composite cross arm.

[0030] Therefore, when the composite cross arm is disassembled, the end of the transmission rope 32 close to the ground can be stretched first to bear the pressure of the composite cross arm, and then the connecting bolts at both ends of the composite cross arm are removed, so that the composite cross arm is separated from the tower body 1, and then the composite cross arm can be slowly lowered to complete the replacement or maintenance.

[0031] As Figure 2 shown, a second rope sleeve 35 is fixedly sleeved on the composite cross arm and located between the two first rope sleeves 33, and a traction rope 36 with one end hanging to the ground is arranged on the second rope sleeve 35, so that in the lifting process of the composite cross arm, the position of the composite cross arm in the air can be adjusted by the cooperation between the traction rope 36 and the second rope sleeve 35, so as to ensure the stable lifting of the composite cross arm.

[0032] The embodiment provides a use method of the composite cross arm support post insulator device,

[0033] S1, the pulley block 31 is mounted on the tower body 1, and the mounting position is higher than the composite cross arm, then the transmission rope 32 is slidably connected with the pulley block 31 by passing through the pulley block 31, and one end of the transmission rope 32 hangs to the ground;

[0034] S2, the second rope sleeve 35 is sleeved on the composite cross arm, and one end of the traction rope 36 connected with the second rope sleeve 35 is hung down to the ground, then the first rope sleeve 33 connected with the transmission rope 32 and the second rope sleeve 35 connected with the fixed rope 34 are sleeved on both ends of the composite cross arm, and the first rope sleeve 33 is fixedly connected with the composite cross arm;

[0035] S3, the installation position on the tower body 1 is placed in the connection interval 223, then the support assembly 2 is installed on the tower body 1 through the cooperation of the installation bolt and the through hole 224, the telescopic rod 23 is started, the fixed plate 211 is driven to the composite cross arm connecting fitting, and the fixed plate 211 is reliably connected with the composite cross arm connecting fitting through the installation bolt and the fixed hole 212;

[0036] S4, the worker supports the pressure borne by the composite cross arm by pulling up the composite cross arm through the transmission rope 32, then the worker releases the connecting bolts at both ends of the composite cross arm, the telescopic rod 23 is started, the fixed plate 211 is retracted, and the support assembly 2 bears the pressure of the high-voltage transmission line;

[0037] S5, the transmission rope 32 is slowly released, the composite cross arm is slowly lowered, and the falling position of the composite cross arm is adjusted through the second rope sleeve 35 and the traction rope 36.

[0038] Finally, it should be pointed out that the above detailed description of the method and the device is only an embodiment, and those skilled in the art can modify the embodiment in different ways without departing from the scope of the present application.

Claims

1. A device for replacing a composite cross-arm post insulator, characterized in that: include, A tower body (1) is used to support a high-voltage transmission line and is provided with a composite cross arm; The support assembly (2) comprises a connecting piece (22) connected to the tower body (1) and a fixing piece (21) connected to the composite cross arm connecting fitting, wherein the fixing piece (21) can move away from or approach the connecting piece (22) along the axial direction of the connecting piece (22).

2. The device for replacing a composite cross-arm post insulator according to claim 1, characterized in that: The connecting member (22) comprises a connecting plate (221) in contact with the tower body (1) and a connecting disk (222) fixedly connected to the connecting plate (221); a connecting section (223) for accommodating the tower body (1) structure is provided between the connecting plate (221) and the connecting disk (222).

3. The device for replacing a composite cross-arm post insulator according to claim 2, wherein: The connecting plate (221) is provided with a through hole (224), and a connecting rod (225) is provided on a side of the connecting disc (222) away from the connecting plate (221).

4. The device for replacing a composite cross-arm post insulator according to claim 3, wherein: The outer fixed sleeve of the connecting rod (225) is provided with a reinforcing cross bar (226) fixedly connected to the connecting plate (222).

5. The device for replacing a composite cross-arm post insulator according to claim 4, characterized in that: The fixing member (21) comprises a fixing plate (211) and a fixing hole (212) provided on the fixing plate (211).

6. The device for replacing a composite cross-arm post insulator according to claim 5, characterized in that: A telescopic rod (23) for controlling the movement of the fixing member (21) is provided between the fixing member (21) and the connecting member (22), and an output end of the telescopic rod (23) is fixedly connected to the fixing plate (211).

7. The device for replacing a composite cross-arm post insulator according to claim 1, characterized in that: The tower body (1) is provided with an adjustment assembly (3) for adjusting the height of the composite cross arm from the ground. The adjustment assembly (3) comprises a pulley block (31) detachably mounted on the tower body (1) and a transmission rope (32) wound around the pulley block (31).

8. The device for replacing a composite cross-arm post insulator according to claim 7, wherein: The transfer rope (32) is provided with a fixing rope (34), and one end of the fixing rope (34) and one end of the transfer rope (32) are both provided with a first rope loop (33) connected to the composite cross arm, and the other end of the transfer rope (32) extends to the ground.

9. The device for replacing a composite cross-arm post insulator according to claim 8, characterized in that: A second rope loop (35) connected to the composite cross arm is provided between the two first rope loops (33), and a traction rope (36) is connected to the second rope loop (35), and one end of the traction rope (36) extends to the ground.

10. A method for replacing a composite cross-arm support insulator device, characterized in that: A device for replacing a composite cross-arm post insulator comprising any one of claims 1 to 9; and S1, installing the pulley block (31) on the tower body (1), and the installation position is higher than the composite cross arm, then passing the transmission rope (32) through the pulley block (31) and slidingly connecting with the pulley block (31), and making one end of the transmission rope (32) hang down to the ground; S2, put the second rope loop (35) on the composite cross arm, and let one end of the traction rope (36) connected to the second rope loop (35) hang down to the ground, then put the first rope loop (33) connected to the transfer rope (32) and the second rope loop (35) connected to the fixing rope (34) on both ends of the composite cross arm, and make the first rope loop (33) fixedly connected to the composite cross arm; S3, placing the installation position on the tower body (1) within the connection interval (223), then installing the support assembly (2) on the tower body (1) by engaging the mounting bolts with the through-holes (224), starting the telescopic rod (23), driving the fixing plate (211) to the composite cross-arm connection fitting, and reliably connecting the fixing plate (211) to the composite cross-arm connection fitting by engaging the mounting bolts with the fixing holes (212); S4, the worker pulls up the composite cross arm through the transmission rope (32) to support the pressure on the composite cross arm, then the worker releases the connecting bolts at both ends of the composite cross arm, activates the telescopic rod (23), and retracts the fixing plate (211), so that the support assembly (2) can withstand the pressure of the high-voltage transmission line; S5, slowly loosen the transfer rope (32), so that the composite cross arm slowly descends, and adjust the falling position of the composite cross arm through the second rope loop (35) and the traction rope (36).

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