A cutting tool for temperature rise testing of switchgear
By designing cutting tools suitable for switchgear temperature rise testing, the problem of cumbersome thermocouple wire replacement and cleaning processes has been solved, providing a convenient and efficient operation method and improving work efficiency and tool reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIPINGYANG POWER EQUIP GROUP CHANGZHOU
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-03
AI Technical Summary
In the temperature rise test of switchgear, the replacement and cleaning of thermocouple wires is cumbersome, easily damaged, and glue residue affects the bonding quality, making the operation inconvenient.
Design a cutting tool for temperature rise testing of switchgear, which has a side blade and a bottom blade. The side blade is used to remove glue, and the bottom blade is used to strip and cut wires. Combined with anti-slip grooves and thickened structure, it can improve grip strength and enhance ease of use and reliability.
It enables convenient replacement and cleaning of thermocouple wires, reduces the probability of damage, improves work efficiency, reduces the frequency of tool replacement, and enhances the durability and safety of cutting tools.
Smart Images

Figure CN224446046U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cutting tool technology, specifically a cutting tool used for temperature rise testing of switchgear. Background Technology
[0002] During switchgear temperature rise testing, thermocouples are frequently used to measure temperature. One end of the thermocouple is attached to the object being tested, and the other end is connected to the measuring instrument. During each test, the thermocouple needs to be removed and reattached. Damage is easily caused during removal, and timely repairs are time-consuming and laborious. After the test, adhesive residue often remains on the copper plate connecting the test specimen and the thermocouple. If not thoroughly removed, this often leads to weak adhesion in subsequent tests. Furthermore, cleaning requires the use of various tools, making the process cumbersome. Using a utility knife to remove adhesive is problematic because the thin blade is prone to breakage. Therefore, this tool was designed for ease of use and comprehensive functionality. It can scrape, cut, and tap, allowing for convenient and complete removal of the thermocouple from the test specimen by tapping, and the tip of the tool can be used to remove adhesive. Utility Model Content
[0003] The purpose of this utility model is to provide a cutting tool for temperature rise testing of switch cabinets. The blade is sharpened on the lower side and end, forming a side blade and a bottom blade. The side blade is used to remove glue, and the bottom blade is used to strip and cut wires. It has multiple functions and is easy to use.
[0004] This utility model provides the following technical solution: a cutting tool for temperature rise testing of switchgear, including a blade, the blade including a cutting edge and a handle, characterized in that: the cutting edge includes a side blade and a bottom blade, the bottom blade is formed on the lower side of the cutting edge, the side blade is formed on the end of the cutting edge, the side blade and the bottom blade are vertically distributed, and both the side blade and the bottom blade are single-sided.
[0005] Furthermore, the handle portion is formed with an anti-slip groove, which is formed on the surface where the back of the blade is located, to prevent the hand from slipping on the blade.
[0006] Furthermore, patches are attached to both sides of the handle by screws. These patches are used to increase the thickness of the handle and improve the grip strength.
[0007] Furthermore, the end of the handle is formed with a blade tail, which is located on the outside of the patch and is used for striking.
[0008] Furthermore, the patch is made of glass fiber reinforced plastic.
[0009] Compared with the prior art, the beneficial effects achieved by this utility model are:
[0010] 1. Easy to use and fully functional, it can be scraped, shaved and knocked. It can easily and completely remove the thermocouple wire stuck to the sample by knocking, and use the side blade to scrape off the glue, and the bottom blade is used to strip and cut the wire.
[0011] 2. High reliability: The blade is made with a one-piece keel, which is strong enough to be used for hammering and has a lower risk of breakage compared to a utility knife;
[0012] 3. The investment cost is relatively low, but it can greatly improve the work efficiency of staff, reduce the probability of damage when removing thermocouple wires, and improve the efficiency of cleaning and repairing thermocouple wires. Attached Figure Description
[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0014] Figure 1 This is an exploded view of the cutting tool of this utility model;
[0015] Figure 2 This is a structural diagram of the blade of this utility model;
[0016] Figure 3 This is a perspective view of the cutting tool of this utility model;
[0017] In the diagram: 11. Blade; 111. Cutting edge; 112. Handle; 113. Side blade; 114. Lower blade; 115. Anti-slip groove; 116. Blade tail; 12. Patch; 13. Nut; 14. Screw. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figure 2This utility model provides a technical solution: a knife for temperature rise testing of switch cabinets, including a blade 11. The blade 11 includes a cutting edge 111 and a handle 112. The cutting edge 111 includes a side blade 113 and a lower blade 114. The lower blade 114 is formed on the lower side of the cutting edge 111, and the side blade 113 is formed on the end of the cutting edge 111. The side blade 113 and the lower blade 114 are vertically distributed, making the blade tip 90°. Both the side blade 113 and the lower blade 114 are single-edged. Both the side blade 113 and the lower blade 114 can be used to remove glue, strip wires, or cut wires. It has multiple functions, is highly practical, and is easy to use. It does not require tool replacement. At the same time, the blade is made of an integrated keel, which has high strength and can meet the impact strength. Compared with utility knives, it has a lower risk of breakage.
[0020] The handle 112 has an anti-slip groove 115 formed on the surface where the back of the knife is located, which is used to prevent the hand from slipping on the knife.
[0021] like Figure 1 As shown, the two sides of the handle 112 are connected to the patch 12 by screws 14. The patch 12 is fixed to the two sides of the handle 112, which increases the thickness of the handle 112, enhances the grip of the hand on the handle 112, and avoids direct contact between the hand and the handle 112, thus reducing wear on the hand.
[0022] The end of the handle portion 112 is formed with a blade tail portion 116, which is located on the outside of the patch 12 and is used for striking.
[0023] Patch 12 is made of glass fiber reinforced plastic.
[0024] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A knife for switchgear temperature rise testing, comprising a blade, the blade comprising a blade portion and a handle portion, characterised in that: The blade portion includes a side blade and a bottom blade. The bottom blade is formed on the lower side of the blade portion, and the side blade is formed on the end of the blade portion. The side blade and the bottom blade are vertically distributed, and both the side blade and the bottom blade are single-sided.
2. The cutting tool for temperature rise testing of switchgear according to claim 1, characterized in that: The handle portion is formed with anti-slip grooves, which are formed on the surface where the back of the blade is located.
3. The knife for temperature rise test of switch cabinet according to claim 1, characterized in that: The two sides of the handle are connected with patches by screws.
4. The knife for temperature rise test of switch cabinet according to claim 3, characterized in that: The end of the handle is formed with a blade tail, which is located on the outside of the patch and is used for striking.
5. The knife for temperature rise test of switch cabinet according to claim 3, characterized in that: The patch is made of glass fiber reinforced plastic.