Special tool for installing insulating pull rod

Abstract

The special tool comprises a handle and a fork head, the handle is an L-shaped slender rod, the length of a vertical section of the handle is larger than the depth of an inner cavity of a solid-sealed polar pole, the end portion of a horizontal section of the handle is connected with the fork head, the fork head is U-shaped, the opening end of the fork head faces outwards, and the opening end of the fork head faces outwards. The width of the fork head U-shaped groove is between the diameter of the insulation pull rod threaded column and the outer diameter of the gasket sleeved on the insulation pull rod threaded column. The tool is simple in structure and convenient to operate, working efficiency is improved, installation reliability is guaranteed, and the percent of pass is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of installation of solid-sealed pole column type combined sensors, and particularly relates to a special tool for installing an insulating pull rod located inside a solid-sealed pole column. Background Art

[0002] With the development of the smart grid industry, the construction of smart grids has put forward new requirements for the miniaturization, high reliability, automation, and intelligence of switches. At present, the sensors operating in the primary-secondary deep integration system are solid-sealed pole column type combined sensors, which are used on various pole-mounted switches or ring main unit switchgears. When in use, an insulating pull rod needs to be installed inside the solid-sealed pole column type combined sensor. Springs washers, flat washers and other related parts need to be installed for the connection between this insulating pull rod and the solid-sealed pole column type combined sensor. Due to the limitation of the installation position, it is inconvenient to install the insulating pull rod, time-consuming and laborious, and it is difficult to ensure that the installed spring washers and flat washers will not slip off and fall during the installation process. In addition, in order to ensure that the insulating pull rod will not become loose due to vibration during the transportation of the product, anaerobic glue needs to be applied to the connection part between the vacuum interrupter and the insulating pull rod in the inner cavity of the solid-sealed pole column. It is necessary to inject the anaerobic glue into the threaded hole of the interrupter, and then connect it with the insulating pull rod through the spring washer and the flat washer. Since the product is inverted when installing the insulating pull rod, the installation space is narrow, and it is impossible to use the conventional method of reaching out to install. Therefore, a special tool for installing the insulating pull rod inside the solid-sealed pole column is designed. Summary of the Invention

[0003] An improvement aimed at at least one defect of the prior art, the utility model provides a special tool for installing an insulating pull rod, which solves the problems of inconvenient installation and time-consuming and laborious installation of the insulating pull rod.

[0004] The technical solution adopted by the utility model is a special tool for installing an insulating pull rod, including a handle and a fork head. The handle is an L-shaped slender rod, the length of the vertical section of the handle is greater than the depth of the inner cavity of the solid-sealed pole column, and the end of the horizontal section of the handle is connected to the fork head. The fork head is U-shaped, the opening end of the fork head faces outward, and the width of the U-shaped groove of the fork head is between the diameter of the threaded column of the insulating pull rod and the outer diameter of the washer sleeved on the threaded column of the insulating pull rod.

[0005] Preferably, the length of the horizontal section of the handle is less than the radius of the inner cavity of the solid-sealed pole column, which is convenient for taking out the special tool after installing the insulating pull rod.

[0006] Preferably, the connection between the horizontal section and the vertical section of the handle is rounded to prevent the sharp right angle from scratching the inner cavity wall of the solid-sealed pole column.

[0007] The beneficial effects of the utility model are as follows: The utility model has a simple structure, convenient operation, improves work efficiency, ensures reliable installation, and improves the qualification rate. Brief Description of the Drawings

[0008] Figure 1 This is the front view of the tool.

[0009] Figure 2 This is the side view of the tool.

[0010] Figure 3 This is the top view of the tool.

[0011] Figure 4 This is the schematic structural diagram when the tool is in use. Markings in the figure: 1 - handle, 2 - fork head, 3 - insulating pull rod, 4 - washer, 101 - vertical section, 102 - horizontal section, 201 - U-shaped groove, 301 - threaded post. Specific implementation manner

[0012] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0013] As Figures 1 to 3 shown, a special tool for installing an insulating pull rod includes a handle 1 and a fork head 2. The handle 1 is an L-shaped slender rod. The length of the vertical section 101 of the handle 1 is greater than the depth of the inner cavity of the solid-sealed pole column. The end of the horizontal section 102 of the handle 1 is connected to the fork head 2. The length of the horizontal section 102 of the handle 1 is less than the radius of the inner cavity of the solid-sealed pole column, which is convenient for taking out the special tool after the insulating pull rod 3 is installed. The connection between the horizontal section 102 and the vertical section 101 of the handle 1 is rounded. The fork head 2 is U-shaped. The open end of the U-shaped groove 201 of the fork head 2 faces outward (the end where the horizontal section 102 is connected to the vertical section 101 is the inner side, and the other end is the outer side). The width of the U-shaped groove 201 of the fork head 2 is between the diameter of the threaded post 301 of the insulating pull rod 3 and the outer diameter of the washer 4 sleeved on the threaded post 301 of the insulating pull rod 3.

[0014] First, fix the solid-sealed pole column in a special tooling position and keep it stable. The central hole (cylinder) for installing the insulating pull rod 3 faces upward. The insulating pull rod 3 and the threaded post 301 to be installed thereon face downward and are aligned with the nut in the inner cavity hole of the solid-sealed pole column and rotated for installation. However, a washer 4, including a spring washer and a flat washer, should be added at the joint surface of the two during installation to ensure the fastening of the installation of both the insulating pull rod 3 and the solid-sealed pole column.

[0015] As Figure 4As shown in the figure, during installation, the washers 4 to be installed together with the insulating pull rod 3 are stacked and sleeved on the threaded post 301 of the insulating pull rod 3 in sequence as required. Then, the U-shaped groove 201 of the fork head 2 of the special tool is inserted onto the threaded post 301 to clamp the washer 4 sleeved on the threaded post 301 between the threaded post 301 and the fork head 2. Then, with a relatively stable posture, the insulating pull rod 3 with the washer 4 and the special tool are inserted downward into the central hole of the solid-sealed pole column, and the threaded post 301 of the insulating pull rod 3 is aligned with the mounting nut of the solid-sealed pole column. After rotating the insulating pull rod 3 so that the threaded post 301 enters the nut for a certain distance, the special tool is then shifted sideways and lifted out. In this way, it can be ensured that the spring washer and the flat washer are not easily slipped out during the installation of the insulating pull rod 3 on the solid-sealed pole column. Then, continue to rotate the insulating pull rod 3 to the fastening position and use a torque wrench to determine that the fastening level meets the technical requirements, thus completing the installation of this insulating pull rod 3 on the solid-sealed pole column.

[0016] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A special tool for installing an insulating pull rod, characterized in that: It includes a handle and a fork, wherein the handle is an L-shaped slender rod, the length of the vertical section of the handle is greater than the depth of the inner cavity of the sealed pole, the end of the horizontal section of the handle is connected to the fork, the fork is U-shaped, the open end of the fork faces outward, and the width of the U-shaped groove of the fork is between the diameter of the insulating pull rod threaded column and the outer diameter of the washer sleeved on the insulating pull rod threaded column.

2. A special tool for installing an insulating pull rod according to claim 1, characterized in that: The length of the horizontal section of the handle is smaller than the radius of the inner cavity of the sealed pole.

3. A special tool for installing an insulating pull rod according to claim 1, characterized in that: The connection between the horizontal section and the vertical section of the handle is rounded.

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