A replacement assembly for a surge arrester

Abstract

The application discloses a lightning arrester replacing assembly, and relates to the technical field of lightning arrester replacing, which comprises an insulating column body, the two ends of the insulating column body are respectively provided with a conductive part and a fixing support, a lightning arrester body connecting assembly is arranged between the conductive part and the fixing support, the lightning arrester body connecting assembly comprises a support frame which is provided with a clamping groove and is fixedly connected with the fixing support, a rotating shaft is tightly connected in the clamping groove, a first connecting part is fixed on the rotating shaft, a second connecting part is fixed on the lightning arrester body, a fixing assembly comprises a through hole which is arranged on the second connecting part, guide columns are slidably connected on the first connecting part, guide cylinders are slidably connected with the opposite ends of the two guide columns through push rods, a pre-tightening assembly comprises two positioning plates which are slidably connected with the rotating shaft, air grooves are arranged in the positioning plates, and the guide cylinders are communicated with the corresponding air grooves through pipes; the lightning arrester can be quickly replaced, and the lightning arrester can be kept in a stable state.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lightning arrester replacement, and particularly relates to a lightning arrester replacement assembly. BACKGROUND

[0002] A lightning arrester is an electrical device used to protect electrical equipment from lightning high transient overvoltage, and also limits the current time, and also often limits the current amplitude. The lightning arrester is also called an overvoltage protector, an overvoltage limiter, and the lightning arrester is divided into many types, such as a metal oxide lightning arrester, a line type metal oxide lightning arrester, a line type metal oxide lightning arrester without gap, a full-insulation composite outer sleeve metal oxide lightning arrester, and a detachable lightning arrester. The main types of lightning arrester include a tube type lightning arrester, a valve type lightning arrester, and a zinc oxide lightning arrester. The main working principles of each type of lightning arrester are different, but the working essence of each type of lightning arrester is the same, that is, to protect communication cables and communication equipment from damage.

[0003] A drop type lightning arrester increases a disengaging device. When the lightning arrester abnormally fails, the disengaging device is actuated by using a power frequency short-circuit current, so that the ground end of the disengaging device is automatically disconnected, the lightning arrester element is flipped and withdrawn from operation to prevent the accident from further expanding, and maintenance personnel can easily find and maintain and replace the lightning arrester in time. The flipping principle is similar to that of a fuse, and the fuse is melted to cause the fuse tube to flip.

[0004] At present, when the lightning arrester is locally replaced after the disengaging, the disengaging mechanism and the lightning arrester are usually disassembled from the insulating column as a whole, then the lightning arrester is disassembled and replaced by screwing the bolt. The fixing mode of the bolt not only easily causes the lightning arrester to deviate due to vibration and wear, but also is inconvenient for quick replacement and multiple fixation constraints of the lightning arrester. In addition, no anti-loosening measures are arranged at the disengaging mechanism, which also causes the lightning arrester to deviate after installation and causes poor contact.

[0005] Therefore, the present application provides a lightning arrester replacement assembly to solve the above problems. SUMMARY

[0006] The main purpose of the present application is to provide a lightning arrester replacement assembly, which can effectively solve the technical problems in the background art.

[0007] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a lightning arrester replacement assembly, comprising an insulating column body, the two ends of the insulating column body are respectively provided with a conductive part and a fixed support, a lightning arrester body is arranged between the conductive part and the fixed support, and the lightning arrester body comprises:

[0008] The connecting assembly comprises a support frame with a clamping groove and fixedly connected with the fixing support, a detachable rotating shaft is tightly connected in the clamping groove, a first connecting part is fixed on the rotating shaft, and a second connecting part capable of being connected with the first connecting part is fixed on the lightning arrester body;

[0009] The fixing assembly comprises a through hole formed on the second connecting part, two guide columns capable of being inserted into the through hole are slidingly connected on the first connecting part, and guide cylinders are slidingly connected with the opposite ends of the two guide columns through push rods;

[0010] The pre-tightening assembly comprises two positioning plates slidingly connected with the rotating shaft, air grooves are formed in the positioning plates, the guide cylinders are communicated with the corresponding air grooves through guide pipes, the positioning plates are connected with the support frame when the guide columns are inserted into the through hole, the positioning plates store energy through the support frame when the first connecting part drives the rotating shaft to rotate, and the air in the air grooves is filled into the guide cylinders for pre-tightening.

[0011] Preferably, the fixing assembly comprises limiting grooves formed on both sides of the second connecting part, limiting blocks capable of being inserted into the corresponding limiting grooves are fixed on the guide columns, and the installation angle and position of the second connecting part are limited.

[0012] Preferably, the guide cylinders are connected with the push rods through first elastic members, and the outer sides of the guide cylinders are connected with the first connecting part through second elastic members.

[0013] Preferably, the elastic force of the first elastic members is smaller than the pulling force of the second elastic members, and when the guide columns drive the push rods to move to the maximum distance away from each other along the guide cylinders, the push rods drive the two guide cylinders to slide away from each other along the first connecting part.

[0014] Preferably, the pre-tightening assembly comprises a push plate slidingly connected with the air grooves, an arc-shaped guide rod is fixed on the end of the push plate away from the guide pipes, positioning grooves communicated with the air grooves are formed on the positioning plates, positioning blocks capable of being inserted into the corresponding positioning grooves are fixed on both sides of the support frame, and the positioning blocks can be in contact with the guide rod.

[0015] Preferably, the end of the push plate close to the guide pipes is connected with the side wall of the air groove through a third elastic member, and the guide pipes are slidingly connected with the first connecting part.

[0016] Preferably, the connecting assembly comprises a gap groove formed on the first connecting part, the free end side of the second connecting part is a wedge surface and can be inserted into the gap groove, and the guide columns are driven to slide away from each other.

[0017] Preferably, the conductive part comprises a connecting plate fixedly connected with the insulating column body, a conductive plate is fixed on the connecting plate, a contact plate is fixedly connected with the conductive plate close to one side of the lightning arrester body, and a terminal post is arranged on one end of the conductive plate close to the insulating column body.

[0018] Preferably, the lightning arrester body is provided with a contact part at one end close to the conductive part, the contact part can be in contact with the contact plate, and an insulating pull ring is arranged at the contact part for operating the lightning arrester body.

[0019] Preferably, the lightning arrester body is fixed with a thermal explosion disconnector at one end close to the first connecting part for automatic disconnection when the lightning arrester body fails.

[0020] Technical effects and advantages of the present application:

[0021] The present application is provided with a guide cylinder, a guide pipe, a positioning plate, a gas groove, a positioning block and a positioning groove, which not only constrain the position of the rotating shaft through the positioning plate and the positioning block when the second connecting part is clamped into the first connecting part, to avoid the deviation of the lightning arrester body caused by vibration and wear, but also pre-tighten the limiting block inserted into the limiting groove by injecting gas into the guide cylinder, to ensure the stability of the connection between the first connecting part and the second connecting part, provide a certain thrust for disconnection of the lightning arrester body, facilitate replacement of the lightning arrester body, and further ensure the efficiency and accuracy during installation of the lightning arrester body. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0023] Figure 2 It is a schematic diagram of the structure of the first connecting part and the second connecting part in the present application;

[0024] Figure 3 It is a schematic diagram of the structure at the support frame and the rotating shaft in the present application;

[0025] Figure 4 It is a schematic diagram of the structure of the pre-tightening assembly and the fixing assembly in the present application;

[0026] Figure 5 It is a sectional view of the structure of the pre-tightening assembly and the fixing assembly in the present application;

[0027] Figure 6 It is a sectional view of the structure of the fixing assembly in the present application;

[0028] Figure 7 It is a schematic diagram of the structure of the pre-tightening assembly in the present application.

[0029] In the figure: 1, insulating column; 2, conductive part; 201, connecting plate; 202, conductive plate; 203, contact plate; 204, terminal post; 3, fixed support;

[0030] 4, arrester body; 401, contact part; 402, insulating pull ring; 403, thermal explosion disconnector;

[0031] 5, connecting assembly; 501, clamping groove; 502, support frame; 503, rotating shaft; 504, first connecting part; 505, second connecting part; 506, accommodating groove;

[0032] 6, fixing assembly; 601, through hole; 602, guide column; 603, push rod; 604, guide cylinder; 605, limiting groove; 606, limiting block; 607, first elastic member; 608, second elastic member;

[0033] 7, pre-tightening assembly; 701, positioning plate; 702, air groove; 703, guide pipe; 704, push plate; 705, guide rod; 706, positioning groove; 707, positioning block; 708, third elastic member. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] Embodiment one

[0036] As shown in Figure 1 and Figure 2 , the present embodiment provides a replacement assembly of an arrester, which comprises an insulating column 1, a conductive part 2 and a fixed support 3 arranged at both ends of the insulating column 1 respectively, an arrester body 4 arranged between the conductive part 2 and the fixed support 3, and a connecting assembly 5, which comprises a support frame 502 with a clamping groove 501 and fixedly connected with the fixed support 3, a rotating shaft 503 tightly connected in the clamping groove 501 and capable of being detached, a first connecting part 504 fixed on the rotating shaft 503, and a second connecting part 505 fixed on the arrester body 4 and capable of being connected with the first connecting part 504.

[0037] The conductive part 2 comprises a connecting plate 201 fixedly connected with the insulating column 1, a conductive plate 202 fixed on the connecting plate 201, a contact plate 203 fixedly connected with the conductive plate 202 on the side close to the arrester body 4, and a terminal post 204 arranged on the end of the conductive plate 202 close to the insulating column 1.

[0038] The lightning arrester body 4 is provided with a contact part 401 close to one end of the conductive part 2, the contact part 401 can be in contact with the contact plate 203, and the contact part 401 is provided with an insulating pull ring 402 for operating the lightning arrester body 4.

[0039] The lightning arrester body 4 is fixed with a thermal explosion disconnector 403 close to one end of the first connecting part 504, which is used for automatic disconnection when the lightning arrester body 4 fails.

[0040] In use, first, the insulating column 1 is installed on the cross arm through the fixing support 3, and the contact part 401 on the lightning arrester body 4 is in contact with the contact plate 203, and at the same time, the line is connected to the terminal post 204, and the electrical elements on the line are protected, when the line fails, at this time, the heat generated by the current is transmitted to the thermal explosion disconnector 403, wherein the thermal explosion disconnector 403 is a prior art, and the specific structure and connection mode will not be described again, the thermal explosion disconnector 403 works so that the lightning arrester body 4 drives the rotating shaft 503 to rotate along the clamping groove 501 through the second connecting part 505 and the first connecting part 504, the lightning arrester body 4 drives the contact part 401 to separate from the contact plate 203, and then the second connecting part 505 is detached from the first connecting part 504, so that the lightning arrester body 4 is detached for replacement.

[0041] Embodiment two

[0042] In use, when the lightning arrester body 4 is replaced after disconnection, not only the rotating shaft 503, the first connecting part 504 and the second connecting part 505 are taken off from the support frame 502 through the lightning arrester body 4, but also the second connecting part 505 is taken off from the first connecting part 504 through the lightning arrester body 4, and then a new lightning arrester body 4 is installed on the first connecting part 504, this process is often fixed by bolts, which is not only troublesome during disassembly and replacement, but also easy to cause the angle of the lightning arrester to deviate due to vibration during fixing, thereby causing poor contact, therefore, based on the above embodiment, further improvement is made.

[0043] As shown in Figures 1 to 3 The fixing assembly 6 includes a through hole 601 opened in the second connecting part 505, two guide columns 602 capable of being inserted into the through hole 601 are slidingly connected on the first connecting part 504, and a guide cylinder 604 is slidingly connected to the opposite ends of the two guide columns 602 through a push rod 603;

[0044] The fixing assembly 6 includes a limiting groove 605 opened on both sides of the second connecting part 505, a limiting block 606 capable of being inserted into the corresponding limiting groove 605 is fixed on the guide column 602, which is used to limit the installation angle and position of the second connecting part 505.

[0045] The guide cylinder 604 is connected with the push rod 603 through the first elastic member 607, and the guide cylinder 604 is connected with the first connecting part 504 through the second elastic member 608.

[0046] The elastic force of the first elastic member 607 is smaller than the pulling force of the second elastic member 608, when the guide post 602 drives the push rod 603 to move away from each other along the guide cylinder 604 to the maximum distance, at this time, the push rod 603 drives the two guide cylinders 604 to slide away from each other along the first connecting part 504.

[0047] The connecting assembly 5 comprises a clearance slot 506 formed on the first connecting part 504, and the free end side of the second connecting part 505 is a wedge surface and can be inserted into the clearance slot 506, for driving the guide post 602 to slide away from each other.

[0048] In use, when the arrester body 4 is removed from the first connecting part 504, first, the guide cylinder 604 is pushed by the insulating rod, the second elastic member 608 is stretched, the guide cylinder 604 drives the guide post 602 to be pulled out from the through hole 601 through the push rod 603, the guide post 602 drives the limiting block 606 to be separated from the limiting slot 605, so that the guide post 602 is no longer constrained to the second connecting part 505, the arrester body 4 drives the second connecting part 505 to be pulled out from the clearance slot 506, so that the damaged arrester body 4 is removed.

[0049] When a new arrester body 4 is installed, at this time, the guide cylinder 604 drives the guide post 602 to slide relative to each other into the clearance slot 506 under the action of the first elastic member 607 and the second elastic member 608, and the installation position of the second connecting part 505 is a wedge surface forming a taper, when the arrester body 4 drives the second connecting part 505 to extend into the clearance slot 506, the wedge surface of the second connecting part 505 drives the two guide posts 602 to drive the push rod 603 to slide along the guide cylinder 604, the first elastic member 607 is compressed, because the elastic force of the first elastic member 607 is smaller than the pulling force of the second elastic member 608, and when the first elastic member 607 is compressed to the limit state, the push rod 603 drives the two guide cylinders 604 to slide away from each other along the first connecting part 504 through the first elastic member 607.

[0050] When the through hole 601 on the second connecting part 505 and the guide column 602 are on the same axis, at this time under the action of the first elastic member 607, the first elastic member 607 drives the two guide cylinders 604 to slide along the first connecting part 504, and makes the guide cylinder 604 drive the guide column 602 to insert into the through hole 601 to position the position of the second connecting part 505, at this time the guide cylinder 604 slides to the maximum distance, when the limiting block 605 and the limiting groove 606 are not in the relative position, at this time the lightning arrester body 4 is not in the installed set position, and the lightning arrester body 4 is pushed to rotate along the guide column 602 slightly, so that the limiting block 606 and the limiting groove 605 are in the opposite position, under the action of the second elastic member 608, the second elastic member 608 drives the two guide columns 602 to move relatively through the push rod 603, so that the guide column 602 drives the limiting block 606 to insert into the limiting groove 605 to limit the second connecting part 505, and ensure that the lightning arrester body 4 is installed to the correct position, after the lightning arrester body 4 is installed, the contact part 401 is contacted with the contact plate 203 through the insulating pull ring 402 to form a protection circuit.

[0051] In summary, through the linkage setting of the limiting block 606, the limiting groove 605, the guide column 602, the push rod 603 and the guide cylinder 604, and then inserting the second connecting part 505 into the accommodation groove 506 of the first connecting part 504, under the action of the second connecting part 505, the two guide columns 602 slide away and then insert into the through hole 601, first position the position of the second connecting part 505, and then adjust the angle of the second connecting part 505, so that the limiting block 606 inserts into the limiting groove 605 to limit, which can automatically position and fix the lightning arrester body 4, improve the accuracy of the installation of the lightning arrester body 4, and reduce the problem of poor contact.

[0052] Embodiment three

[0053] It is also found in use that simply fixing the second connecting part 505 in the first connecting part 504 by the limiting block 606 and the limiting groove 605 without pre-tightening will cause loosening, and the rotation of the shaft 503 will also cause a certain deviation of the lightning arrester body 4 due to vibration and wear, thereby affecting the working stability of the lightning arrester body 4, therefore, further improvement is made based on the above embodiments.

[0054] As Figures 2 to 7As shown, the pre-tightening assembly 7 includes two positioning plates 701 in sliding connection with the rotating shaft 503, the positioning plate 701 is provided with a gas groove 702, the guide cylinder 604 is in communication with the corresponding gas groove 702 through the guide pipe 703, when the guide column 602 is inserted into the through hole 601, the positioning plate 701 is connected with the support frame 502, when the first connecting part 504 drives the rotating shaft 503 to rotate, the positioning plate 701 is stored by the support frame 502, and the gas in the gas groove 702 is filled into the guide cylinder 604 for pre-tightening.

[0055] The pre-tightening assembly 7 includes a push plate 704 in sliding connection with the gas groove 702, the end of the push plate 704 away from the guide pipe 703 is fixed with an arc-shaped guide rod 705, the positioning plate 701 is provided with a positioning groove 706 in communication with the gas groove 702, the support frame 502 is fixed with a positioning block 707 capable of being inserted into the corresponding positioning groove 706 on both sides, and the positioning block 707 can be in contact with the guide rod 705.

[0056] The end of the push plate 704 close to the guide pipe 703 is connected with the side wall of the gas groove 702 through a third elastic member 708, and the guide pipe 703 is in sliding connection with the first connecting part 504.

[0057] In use, the two guide cylinders 604 slide away along the first connecting part 504, so that the guide cylinder 604 drives the positioning plate 701 to slide away along the rotating shaft 503 through the guide pipe 703, so that the positioning block 707 on the support frame 502 is inserted into the positioning groove 706, so that the rotating shaft 503 can be constrained to a certain extent under the action of the positioning block 707 and the positioning groove 706, avoiding a certain deviation of the rotating shaft 503 due to wear and vibration, and ensuring the normal working state of the lightning arrester body 4.

[0058] In the process of swinging the lightning arrester body 4 to the direction of the insulating column body 1, the lightning arrester body 4 drives the rotating shaft 503 to rotate along the clamping groove 501 through the second connecting part 505 and the first connecting part 504, the rotating shaft 503 drives the positioning plate 701 to rotate, so that the positioning block 707 rotates along the positioning groove 706 and gradually contacts the guide rod 705, the positioning block 707 drives the push plate 704 to slide along the gas groove 702 through the guide rod 705, and the third elastic member 708 is compressed, the push plate 704 pushes the gas in the gas groove 702 to be squeezed into the guide cylinder 604 through the guide pipe 703, the guide cylinder 604 is inflated to increase the internal gas pressure and drive the push rod 603 to slide along the guide cylinder 604, so that the push rod 603 drives the limiting block 606 to extend into the limiting groove 605 through the guide column 602.

[0059] When the arrester body 4 swings to the working state, the third elastic member 708 is compressed to the limit state at this time, the pressure in the guide cylinder 604 is the largest, so that the pre-tightening of the limiting block 606 inserted into the limiting groove 605 is the largest, at the same time, the positioning plate 701 can store force when the arrester body 4 is separated and can position the rotating shaft 503 to a certain extent, so as to ensure that the arrester body 4 is in a stable working position, after the arrester body 4 is separated, the above-mentioned movement is repeated in the reverse direction, and the third elastic member 708 in the positioning plate 701 can provide a certain pushing force when the arrester body 4 is separated, so as to assist the arrester body 4 to be normally separated.

[0060] In summary, through the linkage of the guide cylinder 604, the guide pipe 703, the positioning plate 701, the air groove 702, the positioning block 707 and the positioning groove 706, the position of the rotating shaft 503 is constrained by the positioning plate 701 and the positioning block 707 when the second connecting part 505 is clamped into the first connecting part 504, so as to avoid that the arrester body 4 is offset to a certain extent due to vibration and wear of the rotating shaft 503, the limiting block 606 inserted into the limiting groove 605 is pre-tightened and fixed again by injecting gas into the guide cylinder 604, so as to ensure the stability of the connection between the first connecting part 504 and the second connecting part 505, and a certain pushing force is provided when the arrester body 4 is separated, at the same time, the arrester body 4 is convenient to replace, so as to further ensure the efficiency and accuracy when the arrester body 4 is installed.

[0061] The basic principles and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above-mentioned embodiments, the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application, various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A replacement assembly of a lightning arrester, comprising an insulating column body, both ends of which are respectively provided with a conductive part and a fixing support, and a lightning arrester body is arranged between the conductive part and the fixing support, characterized in that, Also include: The connecting assembly includes a support frame with a clamping groove and is fixedly connected with the fixed support, the clamping groove is tightly connected with a detachable rotating shaft, the rotating shaft is fixedly connected with a first connecting part, and the second connecting part is fixedly connected with the first connecting part. The fixing assembly includes a through hole opened on the second connecting part, the first connecting part is slidably connected with two guide columns which can be inserted into the through hole, and the opposite ends of the two guide columns are slidably connected with guide cylinders through push rods. The pre-tightening assembly includes two positioning plates slidably connected with the rotating shaft, the positioning plates are provided with air grooves, the guide cylinders are communicated with the corresponding air grooves through guide pipes, when the guide columns are inserted into the through hole, the positioning plates are connected with the support frame, when the first connecting part drives the rotating shaft to rotate, the positioning plates store energy through the support frame, and the air in the air grooves is filled into the guide cylinders for pre-tightening.

2. The replacement kit for a surge arrester of claim 1, wherein: The fixing assembly includes limiting grooves opened on both sides of the second connecting part, the guide columns are fixedly connected with limiting blocks which can be inserted into the corresponding limiting grooves, for limiting the installation angle and position of the second connecting part.

3. A replacement assembly for a surge arrester according to claim 2, wherein: The guide cylinders are connected with the push rods through first elastic members, and the outer sides of the guide cylinders are connected with the first connecting part through second elastic members.

4. The replacement kit for a surge arrester of claim 3, wherein: The elastic force of the first elastic members is smaller than the pulling force of the second elastic members, when the guide columns drive the push rods to move to the maximum distance along the guide cylinders, the push rods drive the two guide cylinders to slide along the first connecting part.

5. A surge arrester replacement assembly according to claim 4, wherein: The pre-tightening assembly includes a push plate slidably connected with the air groove, one end of the push plate away from the guide pipe is fixedly connected with an arc-shaped guide rod, the positioning plates are provided with positioning grooves communicated with the air grooves, both sides of the support frame are fixedly connected with positioning blocks which can be inserted into the corresponding positioning grooves, and the positioning blocks can be in contact with the guide rod.

6. A replacement assembly for a surge arrester according to claim 5, wherein: One end of the push plate close to the guide pipe is connected with the side wall of the air groove through a third elastic member, and the guide pipe is slidably connected with the first connecting part.

7. A replacement assembly for a surge arrester according to claim 6, characterized in that: The connecting assembly includes a gap groove opened on the first connecting part, the free end side of the second connecting part is a wedge surface and can be inserted into the gap groove, for driving the guide columns to slide away.

8. A replacement assembly for a surge arrester according to claim 7, characterized in that: The conductive part includes a connecting plate fixedly connected with the insulating column, the connecting plate is fixedly connected with a conductive plate, one side of the conductive plate close to the arrester body is fixedly connected with a contact plate, and one end of the conductive plate close to the insulating column is provided with a terminal post.

9. A replacement assembly for a surge arrester according to claim 8, wherein: One end of the arrester body close to the conductive part is provided with a contact part, the contact part can be in contact with the contact plate, and the contact part is provided with an insulating pull ring for operating the arrester body.

10. The replacement kit for a surge arrester of claim 9, wherein: One end of the arrester body close to the first connecting part is fixedly connected with a thermal explosion disconnector for automatically disconnecting when the arrester body fails.

Images