Lightning arrester core assembly assembling tool

Abstract

The utility model relates to a lightning arrester core assembly assembling tool, which belongs to the technical field of lightning protection facilities and comprises a bottom plate, a supporting block and two fixing clamps, the supporting block and the two fixing clamps are mounted on the bottom plate, guide shafts are mounted on the fixing clamps, each fixing clamp comprises a fixing clamp body, a clamping opening used for placing and clamping the guide shafts is formed in each fixing clamp body, and the guide shafts are arranged on the clamping openings. A plate spring is installed at the open end of the clamping opening, a handle is installed on the fixing clamp body through a parallel pin, and a protruding head is arranged on the handle and makes contact with the plate spring. According to the utility model, the verticality of the resistor disc is ensured by utilizing the guide shaft, the quality and the service life of a product are ensured, the relative position of the resistor disc is ensured, the collision and the abrasion of the resistor disc and the insulating rod are avoided, the structure is simple, the guide shaft is ingeniously fixed by utilizing a buckle fixing clamp structure, the operation is convenient, and the disassembly is easy.

Description

Technical Field

[0001] The utility model relates to an assembly tool for a lightning arrester core group, belonging to the technical field of lightning protection facilities. Background Art

[0002] An electrical appliance used to protect electrical equipment from the harm of high transient overvoltages during lightning strikes, limit the follow current time, and often limit the follow current amplitude. A lightning arrester is sometimes also called an overvoltage protector or an overvoltage limiter. The AC non-gap metal oxide lightning arrester has excellent non-linear volt-ampere characteristics, good response characteristics, no follow current, large current-carrying capacity, low residual voltage, strong overvoltage suppression ability, pollution resistance, anti-aging, no altitude constraint, simple structure, no gap, tight sealing, long service life, etc. Under normal system operating voltage, the lightning arrester presents a high-resistance state, and only a microampere-level current passes through. Under the action of overvoltage and large current, it presents a low resistance, thus limiting the residual voltage at both ends of the lightning arrester.

[0003] As the core component of the lightning arrester, the fixing method of the resistor chip in the lightning arrester outer casing becomes important. At present, in domestic porcelain outer casing lightning arresters with high voltage levels, the resistor chips mainly adopt the fixing method of insulating rods. This fixing method is convenient for installation and has high mechanical strength, but there are also certain disadvantages:

[0004] 1. During the installation process, the resistor chips are prone to misalignment, which is likely to wear the resistor chips;

[0005] 2. After the resistor chips are misaligned, partial discharge of the product may occur;

[0006] 3. The overall verticality of the lightning arrester core is insufficient, resulting in the inclination of the resistor chip column and uneven force on the top spring;

[0007] 4. The height requirement of the lightning arrester core is relatively strict. Currently, a meter stick or a straight ruler is used for measurement, which is manual measurement and the measurement accuracy is insufficient. Content of the Utility Model

[0008] The purpose of the utility model is to solve the technical problem in the prior art that the resistor chips are prone to misalignment and wear during the installation process, and to provide an assembly tool for a lightning arrester core group.

[0009] The utility model is realized through the following technical solutions:

[0010] That is, an assembly tool for a lightning arrester core group includes a bottom plate, a support block and two fixed clamps installed on the bottom plate. A guide shaft is installed on the fixed clamp. The fixed clamp includes a fixed clamp body. A clamping opening for placing and clamping the guide shaft is provided on the fixed clamp body. A leaf spring is installed at one open end of the clamping opening. A handle is installed on the fixed clamp body through a parallel pin. A convex head is provided on the handle, and the convex head contacts the leaf spring.

[0011] The utility model ensures the perpendicularity of the resistor chip by using a guide shaft, guarantees the quality and service life of the product, ensures the relative position of the resistor chip, avoids the collision and wear between the resistor chip and the insulating rod, has a simple structure, and ingeniously uses a snap fixing clip structure to fix the guide shaft, with convenient operation and easy disassembly.

[0012] Further preferably, an internal threaded hole is provided at the bottom end of the support block, and the support block is installed on the bottom plate by using a first bolt. With this installation structure for the support block, the disassembly and assembly are convenient.

[0013] Further preferably, the fixing clip is installed on the bottom plate by using two second bolts. With this installation structure for the fixing clip, the disassembly and assembly are convenient.

[0014] Further preferably, the flatness of the bottom plate is less than 0.1, which helps to ensure the perpendicularity of the resistor chip.

[0015] Further preferably, the guide shaft is made of 45# steel.

[0016] Further preferably, the support block is made of aluminum.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] The utility model ensures the perpendicularity of the resistor chip by using a guide shaft, guarantees the quality and service life of the product, ensures the relative position of the resistor chip, avoids the collision and wear between the resistor chip and the insulating rod, has a simple structure, and ingeniously uses a snap fixing clip structure to fix the guide shaft, with convenient operation and easy disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the specific embodiment of the present utility model.

[0021] Figure 2 It is a top-view structural schematic diagram of the specific embodiment of the present utility model.

[0022] Figure 3 It is a top-view structural schematic diagram of the fixing clip in the specific embodiment of the present utility model.

[0023] Figure 4 It is a partial cross-sectional structural schematic diagram of the specific embodiment of the present utility model.

[0024] Figure 5This is a schematic structural diagram of the usage state of the present utility model.

[0025] In the figure: 1. Guide shaft; 2. Support block; 3. Fixed clamp; 4. Base plate; 5. Bolt 1; 6. Bolt 2; 7. Fixed clamp body; 8. Leaf spring; 9. Handle; 10. Parallel pin; 11. Clamping opening; 12. Bolt 3; 13. Core group clamping plate; 14. Resistance sheet; 15. Insulating rod; 16. Intermediate clamping plate; 17. Top clamping plate; 18. Nut. Specific implementation mode

[0026] The following further elaborates on the specific implementation mode of the present utility model with reference to the attached drawings.

[0027] As Figures 1 to 5 shown, a lightning arrester core group assembly tooling includes a base plate 4, a support block 2 and two fixed clamps 3 installed on the base plate 4. A guide shaft 1 is installed on the fixed clamp 3. The fixed clamp 3 includes a fixed clamp body 7. A clamping opening 11 for placing and clamping the guide shaft 1 is provided on the fixed clamp body 7. A leaf spring 8 is installed at the open end of the clamping opening 11. A handle 9 is installed on the fixed clamp body 7 through a parallel pin 10. A convex head is provided on the handle 9, and the convex head contacts the leaf spring 8.

[0028] The present utility model uses the guide shaft 1 to ensure the perpendicularity of the resistance sheet, guarantee the quality and service life of the product, ensure the relative position of the resistance sheet, avoid the collision and wear between the resistance sheet and the insulating rod, has a simple structure, and cleverly uses the snap - fixed clamp 3 structure to fix the guide shaft 1, is convenient to operate and easy to disassemble.

[0029] Among them, an internal threaded hole is provided at the bottom end of the support block 2. The support block 2 is installed on the base plate 4 using bolt 1 5, and the fixed clamp 3 is installed on the base plate 4 using two bolts 2 6. The support block 2 and the fixed clamp 3 adopt this installation structure, which is convenient for disassembly and assembly.

[0030] Among them, the flatness of the base plate 4 is less than 0.1, which helps to ensure the perpendicularity of the resistance sheet.

[0031] Among them, the guide shaft 1 is made of 45 - steel material, scales are provided on the guide shaft 1, and the support block 2 is made of aluminum material.

[0032] Working principle:

[0033] First, install the support block 2 and the fixing clamp 3 on the bottom plate 4 of the tooling with bolt 1-5 and bolt 3-12, and fix the bottom plate 4 on the workbench. The workbench should be ensured to be flat, and the surface of the bottom plate 4 should be kept horizontal and calibrated with a level. Place the core group clamping plate 13 on the support block 2. After the guide shaft 1 passes through the core group clamping plate 13 and the clamping opening 11 in sequence, lock the guide shaft 1 with the handle 9. When locking, ensure the perpendicularity of the guide shaft 1 and calibrate it with a level. Then place the resistor sheet 14, the intermediate clamping plate 16, and the top clamping plate 17 in sequence. When placing the resistor sheet 14, the outer edge of the resistor sheet 14 should closely adhere to the outer circle of the guide shaft 1, and place the resistor sheet 14 according to the drawing sequence. Utilize the scale of the guide shaft 1 to place the intermediate clamping plate 16 and the top clamping plate 17 at the corresponding positions, and place the insulating rod 15 in sequence. Fix the top clamping plate 17 with the hexagonal nut 18, loosen the handle 9, and remove the guide shaft 1 in sequence. The installation of the arrester core group is completed.

[0034] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0035] The terms "upper", "lower", "outer side", "inner side", etc. in the specification, claims and above-mentioned drawings of the present utility model, if any, are used to distinguish the relative relationship in position and do not need to be given a qualitative definition. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lightning arrester core assembly tool, characterized in that: The invention comprises a base plate (4), a support block (2) and two fixing clamps (3) mounted on the base plate (4), a guide shaft (1) being mounted on the fixing clamp (3), the fixing clamp (3) comprising a fixing clamp body (7), a clamping opening (11) for placing and clamping the guide shaft (1) being provided on the fixing clamp body (7), a leaf spring (8) being mounted on an open end of the clamping opening (11), a handle (9) being mounted on the fixing clamp body (7) via a parallel pin (10), the handle (9) being provided with a convex head, the convex head being in contact with the leaf spring (8).

2. The arrester core assembly tool according to claim 1, characterized in that: An internal threaded hole is provided at the bottom end of the support block (2), and the support block (2) is mounted on the base plate (4) using a bolt (5).

3. The arrester core assembly tool according to claim 1, characterized in that: Install the retaining clip (3) to the base plate (4) using two bolts (6).

4. The arrester core assembly tool according to claim 1, characterized in that: The flatness of the bottom plate (4) is less than 0.

1.

5. The arrester core assembly tool according to claim 1, characterized in that: The guide shaft (1) is made of 45 steel.

6. The arrester core assembly tool according to claim 1, characterized in that: The support block (2) is made of aluminum.

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