A tool for dismounting and mounting a 380V frequency converter safety

Abstract

The utility model discloses a kind of for frequency converter 380V insurance dismounting tool;The utility model relates to frequency converter maintenance tool technical field, it includes X-shaped clamping handle, clamping adjusting assembly, clamping positioning assembly and protective warning assembly;Clamping handle intersection part is equipped with rotating shaft, spring and rebound buckle are in shaft, surface is equipped with antiskid groove;Top clamping plate is equipped with arc clamping head, head opens the recess of adaptation insurance, alarm and warning light are equipped on clamping plate surface, clamping head is equipped with contact line, clamping plate is pasted with protective rubber, and high pressure safety is guaranteed by double insulation and electric leakage early warning, automatically rebound clamping and positioning recess improve stability, and adaptation frequency converter compact space.The problem of poor insulation, unstable clamping of traditional tool is solved, and 380V insurance safe and efficient dismounting is realized.

Description

Technical Field

[0001] This utility model relates to the technical field of inverter repair tools and equipment, specifically a tool for removing and installing 380V fuses in inverters. Background Technology

[0002] The 380V fuse for a frequency converter is a critical protective component ensuring its stable operation. During frequency converter troubleshooting, frequent fuse removal and installation are necessary to identify problems. The core requirements for its removal and installation are: to prevent workers from directly contacting live parts and risking electric shock; and to accommodate the compact installation space within the frequency converter, enabling precise gripping and stable installation and removal, preventing damage to the fuse housing or bending of the leads, thus ensuring both maintenance efficiency and operational safety.

[0003] A search revealed that Chinese patent CN217507968U discloses "an electrical fuse removal and installation tool." This device uses a clamp-like structure to grasp fuses, but it is only suitable for ordinary low-voltage fuses and does not have insulation protection designed for the 380V high-voltage scenario of frequency converters. During operation, it is easy to cause leakage risk due to insufficient insulation. In addition, the clamp head size is fixed and cannot be adapted to the installation gap of different specifications of 380V fuses inside the frequency converter. It is easy to have problems such as unstable grasping or inability to reach into tight spaces. Improper force may also damage the fuse during removal and installation, increasing maintenance costs.

[0004] Currently available tools for removing and installing 380V fuses for frequency converters still have the following prominent defects:

[0005] 1. Lack of high-voltage protection and safety warning: The main body of the tool is mostly made of ordinary metal material with only a simple insulation layer wrapped on the surface. In a 380V high-voltage environment, insulation breakdown is likely to occur, and the risk of electric shock to the operator is extremely high. In addition, there is no leakage current detection and warning structure, and it only relies on pre-operation voltage testing. If the voltage testing is not thorough or a sudden leakage occurs during operation, it is easy to cause a safety accident. At the same time, the clamping handle has no anti-slip design, and it is easy to slip in wet or oily environments, which exacerbates the risk.

[0006] 2. The clamping stability and ease of operation are insufficient. Most of them are fixed-size clamp designs without automatic spring-back clamping function. They require continuous manual force to maintain the clamping state, which can easily lead to fatigue during long-term operation. The clamping head does not have a positioning groove adapted to the shape of the fuse, resulting in poor fit with the fuse. It is easy to shift during disassembly and assembly, which may cause the fuse to break or the pin to bend. In addition, the clamp body has poor flexibility and cannot be adapted to the compact space inside the frequency converter, which may easily cause accidental contact with surrounding components. Utility Model Content

[0007] The purpose of this utility model is to provide a tool for removing and installing 380V fuses in frequency converters, so as to solve the problems mentioned in the background art.

[0008] To solve the above technical problems, the present invention provides the following technical solution: a tool for removing and installing 380V fuses of frequency converters, including clamping handles arranged in an X shape, a clamping adjustment component disposed at the intersection of the clamping handles, a clamping positioning component disposed at the top of the clamping handles, and a protective warning component disposed on the surface of the clamping positioning component.

[0009] The clamping adjustment assembly includes a rotating shaft installed at the intersection of the clamping handle, a spring built into the rotating shaft, a spring-loaded buckle connected to the spring, and mounting blocks fixed at both ends of the rotating shaft.

[0010] The clamping and positioning assembly includes a clamping plate fixedly connected to the top of the clamping handle and a clamping head installed on the inner side opposite to the clamping plate. The surface of the clamping head is provided with a groove adapted to the shape of the 380V fuse of the frequency converter.

[0011] The protective warning assembly includes an alarm mounted on the surface of the clamping plate, a warning light electrically connected to the alarm, multiple contact lines connected to the alarm and extending to the surface of the clamping head, and protective rubber fitted to the outer surface of the clamping plate; the surface of the clamping handle is provided with multiple anti-slip grooves.

[0012] As a further improvement of this utility model: the clamping handle is made of high-strength epoxy resin insulating material, with a length of 18-22cm, and multiple anti-slip grooves are evenly distributed along the length of the clamping handle, with a groove depth of 0.8-1.2mm and a groove width of 2-3mm, forming an arc-shaped structure.

[0013] As a further embodiment of this utility model: the rotating shaft horizontally passes through the intersection of the clamping handles, the mounting block is a rectangular insulating block, which is fixed with the two ends of the rotating shaft by interference fit, the spring is arranged along the axis of the rotating shaft, and its two ends respectively abut against the inner side of the intersection of the two clamping handles, and the rebound buckle is linked with the spring to realize the positioning after the clamping handles are opened and closed.

[0014] As a further improvement of this utility model: the clamping plate and the clamping handle are integrally formed, the clamping head is an arc-shaped metal head, which can be detachably installed on the inner side of the clamping plate by bolts, the groove is an arc-shaped groove, the groove diameter is adapted to the outer diameter of the 380V fuse of the frequency converter, and the inner wall of the groove is fitted with an anti-slip insulating pad.

[0015] As a further improvement of this utility model: the alarm is a high-voltage dedicated type, with a working voltage adapted to 380V AC circuit; the warning light is a red LED flashing light, integrated with the alarm; and the contact wire is a copper conductive wire, embedded in the surface of the clamping head and connected to the alarm signal terminal.

[0016] As a further improvement of this utility model: the protective rubber is made of high-pressure resistant silicone rubber with a thickness of 2-3mm, and is bonded to the outer surface of the clamping plate with a high-temperature resistant adhesive, covering all exposed areas of the clamping plate.

[0017] As a further improvement of this utility model: the opening and closing angle range of the clamping handle is 0°-45°, and the length of the clamping head is 3-5cm, which is suitable for an installation gap of not less than 1cm inside the frequency converter.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model utilizes a high-strength epoxy resin insulating material for the clamping handle and high-voltage resistant protective rubber laminated to the outer surface of the clamping plate to form a double insulation protection structure, effectively blocking the 380V high-voltage leakage path. The insulation performance meets high-voltage operation standards. The arc-shaped anti-slip groove on the surface of the clamping handle increases grip friction and prevents slipping in wet or oily environments. In the protective warning component, the contact wire senses leakage signals in real time, and immediately triggers an alarm and flashing red warning light when leakage occurs, achieving dual protection of "passive insulation + active early warning," completely solving the core safety hazards of insufficient high-voltage protection and lack of leakage warning in traditional tools.

[0020] This utility model features an X-shaped clamping handle that, in conjunction with a spring and a rebound buckle at the pivot point, achieves an automatic rebound clamping function. During operation, no continuous manual force is required; a light grip on the handle is sufficient for stable clamping, significantly reducing operator fatigue. The curved groove of the clamping head precisely matches the shape of a 380V fuse, and the anti-slip insulating pad inside the groove ensures a tight fit without shifting, effectively preventing fuse breakage or pin bending. The detachable design of the clamping head and its 3-5cm length allow it to accommodate fuses of different sizes and the narrow gaps inside frequency converters, avoiding accidental contact with surrounding components. This solves the problems of unstable clamping, laborious operation, and poor adaptability associated with traditional tools. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the clamping plate structure according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the rotating shaft according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the groove structure according to an embodiment of the present utility model.

[0025] In the diagram: 1. Clamping handle; 2. Clamping adjustment assembly; 201. Rotary shaft; 202. Spring; 203. Rebound latch; 204. Mounting block; 205. Anti-slip groove; 206. Clamping plate; 207. Clamping head; 208. Groove; 3. Protective warning assembly; 301. Alarm; 302. Warning light; 303. Contact wire; 304. Protective rubber. Detailed Implementation

[0026] To facilitate problem-solving, this utility model provides a tool for removing and installing 380V fuses in frequency converters. The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] Example 1

[0028] like Figures 1 to 4 As shown, this embodiment provides a tool for removing and installing 380V fuses for frequency converters, including clamping handles 1 arranged in an X shape, a clamping adjustment assembly 2 disposed at the intersection of the clamping handles 1, a clamping positioning assembly disposed at the top of the clamping handles 1, and a protective warning assembly 3 disposed on the surface of the clamping positioning assembly. The clamping adjustment assembly 2 includes a rotating shaft 201 installed at the intersection of the clamping handles 1, a spring 202 built into the rotating shaft 201, a spring-loaded buckle 203 connected to the spring 202, and mounting blocks 204 fixed to both ends of the rotating shaft 201. The clamping positioning assembly... The component includes a clamping plate 206 fixedly connected to the top of the clamping handle 1, and a clamping head 207 installed on the opposite inner side of the clamping plate 206. The surface of the clamping head 207 has a groove 208 adapted to the shape of the inverter 380V fuse. The protective warning component 3 includes an alarm 301 installed on the surface of the clamping plate 206, a warning light 302 electrically connected to the alarm 301, a plurality of contact lines 303 connected to the alarm 301 and extending to the surface of the clamping head 207, and a protective rubber 304 fitted to the outer surface of the clamping plate 206. The surface of the clamping handle 1 has a plurality of anti-slip grooves 205.

[0029] Example 2

[0030] In addition to all the technical features in Embodiment 1, this embodiment also includes: the clamping plate 206 and the clamping handle 1 are integrally formed; the clamping head 207 is an arc-shaped metal head, which is detachably installed on the inner side of the clamping plate 206 by bolts; the groove 208 is an arc-shaped groove with a groove diameter adapted to the outer diameter of the 380V fuse of the frequency converter, and the inner wall of the groove is fitted with an anti-slip insulating pad; the alarm 301 is a high-voltage dedicated type, with a working voltage adapted to 380V AC circuit; the warning light 302 is a red LED flashing light, which is integrated with the alarm 301; the contact wire 303 is a copper conductive wire, which is embedded in the surface of the clamping head 207 and connected to the signal terminal of the alarm 301. The alarm 301 enhances the overall safety and increases the overall safe usability.

[0031] Furthermore, the clamping handle 1 is made of high-strength epoxy resin insulating material, with a length of 18-22cm. Multiple anti-slip grooves 205 are evenly distributed along the length of the clamping handle 1, with a groove depth of 0.8-1.2mm and a groove width of 2-3mm, forming an arc-shaped structure. The rotating shaft 201 horizontally passes through the intersection of the clamping handle 1. The mounting block 204 is a rectangular insulating block, which is fixed with the two ends of the rotating shaft 201 by interference fit. The spring 202 is set along the axis of the rotating shaft 201, and its two ends respectively abut against the inner side of the intersection of the two clamping handles 1. The spring-loaded buckle 203 is linked with the spring 202 to realize the positioning of the clamping handle 1 after opening and closing, and the entire operation is carried out through the clamping handle 1.

[0032] Furthermore, the protective rubber 304 is made of high-pressure resistant silicone rubber with a thickness of 2-3mm. It is bonded to the outer surface of the clamping plate 206 with a high-temperature resistant adhesive, covering all exposed areas of the clamping plate 206. The opening and closing angle range of the clamping handle 1 is 0°-45°, and the length of the clamping head 207 is 3-5cm, which is adapted to the installation gap of not less than 1cm inside the frequency converter. The protective rubber 304 provides overall protection.

[0033] Working principle: The clamping handle 1 is made of high-strength epoxy resin insulation material, and the outer surface of the clamping plate 206 is bonded with high-voltage resistant protective rubber 304, forming a double insulation protection structure, which effectively blocks the 380V high-voltage leakage path, and the insulation performance meets the high-voltage operation standards; the arc-shaped anti-slip groove 205 on the surface of the clamping handle 1 increases the grip friction and avoids slipping in wet or oily environments; in the protective warning component 3, the contact wire 303 detects the leakage signal in real time, and immediately triggers the alarm 301 and the red warning light 302 to flash when leakage occurs, and the X-shaped clamping handle 1 cooperates with the signal. The spring 202 and the return latch 203 at the pivot 201 enable automatic return clamping, eliminating the need for continuous manual force during operation. A light grip on the handle is sufficient to maintain stable clamping, significantly reducing operator fatigue. The arc-shaped groove 208 of the clamping head 207 precisely fits the shape of the 380V fuse, and the anti-slip insulating pad inside the groove ensures a tight fit without shifting during clamping, effectively preventing fuse breakage or pin bending. The detachable design of the clamping head 207 and its 3-5cm length allow it to accommodate fuses of different specifications and the narrow gaps inside the inverter, preventing accidental contact with surrounding components.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tool for removing and installing 380V fuses in frequency converters, characterized in that: It includes an X-shaped clamping handle (1), a clamping adjustment component (2) disposed at the intersection of the clamping handle (1), a clamping positioning component disposed at the top of the clamping handle (1), and a protective warning component (3) disposed on the surface of the clamping positioning component; The clamping adjustment assembly (2) includes a rotating shaft (201) installed at the intersection of the clamping handle (1), a spring (202) built into the rotating shaft (201), a spring-loaded buckle (203) connected to the spring (202), and mounting blocks (204) fixed at both ends of the rotating shaft (201). The clamping and positioning assembly includes a clamping plate (206) fixedly connected to the top of the clamping handle (1) and a clamping head (207) installed on the opposite inner side of the clamping plate (206). The surface of the clamping head (207) is provided with a groove (208) adapted to the shape of the 380V fuse of the frequency converter. The protective warning component (3) includes an alarm (301) mounted on the surface of the clamp (206), a warning light (302) electrically connected to the alarm (301), a plurality of contact lines (303) connected to the alarm (301) and extending to the surface of the clamping head (207), and protective rubber (304) fitted to the outer surface of the clamp (206); the surface of the clamping handle (1) is provided with a plurality of anti-slip grooves (205).

2. The tool for removing and installing 380V fuses in a frequency converter according to claim 1, characterized in that: The clamping handle (1) is made of high-strength epoxy resin insulating material and has a length of 18-22cm. Multiple anti-slip grooves (205) are evenly distributed along the length of the clamping handle (1), with a groove depth of 0.8-1.2mm and a groove width of 2-3mm, forming an arc-shaped structure.

3. The tool for removing and installing 380V fuses in a frequency converter according to claim 1, characterized in that: The rotating shaft (201) passes horizontally through the intersection of the clamping handles (1). The mounting block (204) is a rectangular insulating block that is fixed with the two ends of the rotating shaft (201) by interference fit. The spring (202) is set along the axis of the rotating shaft (201), and its two ends abut against the inner sides of the intersection of the two clamping handles (1). The spring-loaded buckle (203) is linked with the spring (202) to realize the positioning of the clamping handles (1) after opening and closing.

4. A tool for removing and installing 380V fuses in a frequency converter according to claim 1, characterized in that: The clamping plate (206) and the clamping handle (1) are integrally formed. The clamping head (207) is an arc-shaped metal head that can be detachably installed on the inner side of the clamping plate (206) by bolts. The groove (208) is an arc-shaped groove with a groove diameter that matches the outer diameter of the 380V fuse of the frequency converter. The inner wall of the groove is fitted with an anti-slip insulating pad.

5. A tool for removing and installing 380V fuses in a frequency converter according to claim 1, characterized in that: The alarm (301) is a high-voltage dedicated type, with a working voltage adapted to 380V AC circuit. The warning light (302) is a red LED flashing light, which is integrated with the alarm (301). The contact wire (303) is a copper conductive wire, which is embedded in the surface of the clamping head (207) and connected to the signal terminal of the alarm (301).

6. A tool for removing and installing 380V fuses in a frequency converter according to claim 1, characterized in that: The protective rubber (304) is made of high-pressure resistant silicone rubber with a thickness of 2-3mm. It is bonded to the outer surface of the clamping plate (206) with a high-temperature resistant adhesive, covering all exposed areas of the clamping plate (206).

7. A tool for removing and installing 380V fuses in a frequency converter according to claim 1, characterized in that: The opening and closing angle range of the clamping handle (1) is 0°-45°, and the length of the clamping head (207) is 3-5cm, which is adapted to the installation gap of not less than 1cm inside the frequency converter.

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