Auxiliary tool and method for replacing high-voltage fuse

Abstract

According to the auxiliary tool and method for replacing the high-voltage fuse, clamping of a top cover of the high-voltage fuse is achieved through a first clamping part and a second clamping part, a telescopic spring can be compressed by pinching a grip push piece, the first clamping part and the second clamping part are made to get close to each other and tighten and clamp the top cover, operation is convenient and fast, and the replacement efficiency of the high-voltage fuse is improved. The operation efficiency and the safety are effectively improved; the device comprises a connecting rod, a first clamping part is fixed to one end of the connecting rod, a blocking piece is arranged at the other end of the connecting rod, a fixing piece is arranged between the first clamping part and the blocking piece, the connecting rod is sleeved with the fixing piece in a sliding mode, a second clamping part is arranged at the bottom of the fixing piece, and operating pliers are welded to the side, close to the first clamping part, of the fixing piece. The operating clamp is arranged on the connecting rod in a sliding and sleeving mode, a push piece is arranged between the operating clamp and the fixing piece, a telescopic spring is arranged on the connecting rod, the two ends of the telescopic spring are connected to the fixing piece and the push piece respectively, and a self-locking device is arranged on the side, close to the first clamping part, of the operating clamp.

Description

Technical Field

[0001] The present invention relates to the technical field of on-site maintenance tools, and particularly to an auxiliary tool for replacing high-voltage fuses. Background Art

[0002] In the operation and maintenance work of the power system, high-voltage fuses are one of the important components to ensure the safe and stable operation of the power grid. The fuse cuts off the circuit by melting the built-in fuse wire when the current exceeds the set threshold, preventing equipment damage or fire accidents. However, in actual operation and maintenance work, replacing the damaged fuse wire becomes a challenging task. The structure of the fuse usually includes a porcelain or plastic shell with components such as a fuse wire and a spring inside. After the fuse wire melts, it needs to be replaced, and the spring is used to provide the necessary tension when the fuse is inserted into the device to ensure good contact between the fuse and the device. During the process of replacing the fuse wire, the operation and maintenance personnel need to first unscrew the fastening screw on one side of the fuse to remove the damaged fuse wire. After replacing the fuse wire, the operation and maintenance personnel need to reinstall the cover and tighten the screw. However, due to the presence of the spring inside the fuse, the cover is often affected by the spring tension when being fixed, making it difficult to stably align with the screw hole, increasing the operation difficulty. To solve this problem, the operation and maintenance personnel usually need to take some additional measures, such as using tools to clamp the cover and adjusting the position of the cover. However, these methods are often inefficient and have operation risks.

[0003] Currently, there are already some auxiliary tools on the market designed to help operation and maintenance personnel solve the problem of cover fixation. The prior art has also been improved to a certain extent. For example, Chinese Patent Application No. 2015210429672, publication date June 8, 2016, an auxiliary tool for replacing high-voltage fuses, installs the top cover of the high-voltage fuse into the through hole of the bottom plate, the kit is sleeved in the annular card slot of the fuse, and the kit is fixedly connected to the bottom plate by the first fastener passing through the first mounting hole and the second mounting hole. Although this technical solution can achieve the fixation of the top cover of the high-voltage fuse, there are still problems such as difficult installation and inconvenient operation in actual application.

[0004] In summary, aiming at the problem of difficult cover fixation when replacing the fuse wire of high-voltage fuses, developing an efficient and convenient auxiliary tool is of great significance for improving the operation and maintenance work efficiency and safety. Summary of the Invention

[0005] The present invention aims at the technical defects of the prior art and provides an auxiliary tool and method for replacing high-voltage fuses. The first clamping part and the second clamping part are used to clamp the top cover of the high-voltage fuse. Squeezing the grip push piece will compress the telescopic spring, causing the first clamping part and the second clamping part to approach each other and tighten to clamp the top cover, which is convenient to operate and effectively improves the operation efficiency and safety.

[0006] The present invention provides the following technical solution: An auxiliary tool for replacing a high-voltage fuse, comprising a connecting rod, one end of the connecting rod is fixed with a first clamping portion, a retaining piece is provided at the other end of the connecting rod, a fixing piece is provided between the first clamping portion and the retaining piece, the fixing piece is slidably sleeved on the connecting rod, a second clamping portion is provided at the bottom of the fixing piece, an operating pliers is welded on one side of the fixing piece close to the first clamping portion, the operating pliers is slidably sleeved on the connecting rod, a pushing piece is provided between the operating pliers and the fixing piece, a telescopic spring is provided on the connecting rod, and two ends of the telescopic spring are respectively connected to the fixing piece and the pushing piece, and a self-locking device is provided on one side of the operating pliers close to the first clamping portion.

[0007] Preferably, the operating pliers includes a first grip, a second grip, a first fixed end, and a second fixed end. The first grip and the second grip are hingedly connected. The bottom of the first grip is respectively connected to the first fixed end and the second fixed end. The other ends of the first fixed end and the second fixed end are respectively welded to the fixing piece. A round hole for passing through the connecting rod is opened on the first fixed end. The bottom of the second grip extends to the pushing piece.

[0008] Preferably, the first clamping portion is a U-shaped plate, which is welded to one end of the connecting rod, and the second clamping portion is a U-shaped frame, which is welded to the lower side of the fixing piece.

[0009] Preferably, the self-locking device includes a stop plate, a hanging piece, and a spring. The hanging piece is welded to the outside of the first fixed end. The stop plate is sleeved on the connecting rod. The bottom of the stop plate is hung on the hanging piece. A spring is provided between the stop plate and the outside of the first fixed end. The spring is sleeved on the connecting rod. The elastic action of the spring causes the stop piece to be inclined and locked on the connecting rod.

[0010] Preferably, a through hole is provided at the bottom of the second grip, a fixing pin is arranged in the through hole, the outside of the fixing pin is in fit with the pushing piece, and the pushing piece is sleeved on the connecting rod.

[0011] Preferably, a stroke adjustment knob is arranged between the telescopic spring and the fixing piece.

[0012] Preferably, a round hole for passing through the connecting rod is opened on the fixing piece, and the fixing piece is a L-shaped plate.

[0013] Preferably, the thickness of the pushing piece is 9.5 mm.

[0014] A method for using an auxiliary tool for replacing a high-voltage fuse comprises the following steps:

[0015] (1) Clamp both ends of the present device onto the high-voltage fuse, ensure that the present device is in close fit with the fuse, and adjust the top cover of the high-voltage fuse to a proper position;

[0016] (2) The staff continuously squeezes the handle of the device, and the second handle drives the push piece to compress the telescopic spring, so that the first clamping part and the second clamping part are continuously tightened to fix the top cover. When the top cover is completely fixed, the handle is released, and the stop plate is automatically locked on the connecting rod;

[0017] (3) The staff tightens the threads of the fuse. After completing the tightening operation, the stop plate is moved to loosen the first clamping part and remove the device.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the above technical scheme, an auxiliary tool for replacing a high-voltage fuse comprises a connecting rod, a first clamping portion is fixed at one end of the connecting rod, a baffle is provided at the other end of the connecting rod, a fixing plate is provided between the first clamping portion and the baffle, the fixing plate is slidably sleeved on the connecting rod, a second clamping portion is provided at the bottom of the fixing plate, an operating clamp is welded on the side of the fixing plate close to the first clamping portion, the operating clamp is slidably sleeved on the connecting rod, a push plate is provided between the operating clamp and the fixing plate, a telescopic spring is provided on the connecting rod, and the two ends of the telescopic spring are respectively connected to the fixing plate and the push plate, and a self-locking device is provided on the side of the operating clamp close to the first clamping portion;

[0020] The present invention discloses an auxiliary tool for replacing a high-voltage fuse. The clamping of the top cover of the high-voltage fuse is achieved by setting a first clamping portion and a second clamping portion. The connecting rod plays a role in supporting and connecting other components to ensure stability and reliability during operation. The stop piece is arranged at the other end of the connecting rod to limit the sliding range of the fixing piece on the connecting rod and ensure that the fixing piece operates in the correct position. The fixing piece is slidably sleeved on the connecting rod, and the second clamping portion is fixed at the bottom. It is used in cooperation with the first clamping portion to clamp and fix the other side of the high-voltage fuse. By sliding the fixing piece, the distance between it and the first clamping portion can be adjusted to adapt to fuses of different lengths. The operating pliers are welded to one side of the fixing piece close to the first clamping portion and are slidably sleeved on the connecting rod. The operating pliers are used to operate the entire tool, such as clamping and releasing the fuse, and are easy to hold and operate. The push piece is located between the operating pliers and the fixing piece and is connected to the telescopic spring. The function of the push piece is to push the operating pliers and the fixing piece to slide along the connecting rod under the action of the telescopic spring, so as to adjust the position and clamping force of the clamping portion. The telescopic spring is arranged on the connecting rod, and the two ends are respectively connected to the fixing piece and the push piece. The telescopic spring provides the clamping force, enabling the first clamping portion and the second clamping portion to firmly clamp the fuse. At the same time, it can also provide a certain buffer and resilience when the operating pliers are operated. The self-locking device is arranged on one side of the operating pliers close to the first clamping portion. The function of the self-locking device is to automatically lock the position of the operating pliers after clamping the fuse to prevent the tool from accidentally loosening or falling off during operation. The first clamping portion and the second clamping portion work together to ensure the stability of the fuse by clamping and fixing both sides of the fuse. The stop piece limits the sliding range of the fixing piece on the connecting rod to ensure the accuracy of the operation. The operating pliers can be conveniently operated by being slidably sleeved on the connecting rod. The push piece forms a linkage relationship with the operating pliers and the fixing piece under the action of the telescopic spring, enabling the clamping portion to be adjusted as needed. The self-locking device is automatically locked after the operating pliers clamp the fuse, and one person can complete the operation of replacing the fuse and the fuse wire, ensuring the safety and stability of the operation. Only need the staff to continuously squeeze the grip, the push piece will compress the telescopic spring, causing the first clamping portion and the second clamping portion to approach each other and tighten to clamp the top cover, which is convenient to operate and effectively improves the operation efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the installation schematic diagram of the present invention;

[0022] Figure 2 is the three-dimensional structure schematic diagram of a specific embodiment of the present invention;

[0023] Figure 3 is Figure 2 the three-dimensional structure schematic diagram of the squeezed grip;

[0024] Figure 4Schematic three-dimensional structure diagram of the operating pliers.

[0025] Description of reference numerals:

[0026] 1. Operating pliers; 2. Fixed piece; 3. Link rod; 4. Spring; 5. Telescopic spring; 6. Pushing piece; 7. First clamping part; 8. Second clamping part; 9. Stop plate; 10. Retaining piece

[0027] 101. First grip; 102. Second grip; 103. First fixed end; 104. Second fixed end. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] As Figures 1 to 4 shown, it shows the detailed implementation manners of the present invention: As Figures 1 to 4 shown, an auxiliary tool for replacing a high-voltage fuse disclosed in the present invention includes a link rod 3. One end of the link rod 3 is fixed with a first clamping part 7, and a retaining piece 10 is provided at the other end of the link rod 3. A fixed piece 2 is provided between the first clamping part 7 and the retaining piece 10. The fixed piece 2 is slidably sleeved on the link rod 3. A second clamping part 8 is provided at the bottom of the fixed piece 2. An operating pliers 1 is welded on the side of the fixed piece 2 close to the first clamping part 7. The operating pliers 1 is slidably sleeved on the link rod 3. A pushing piece 6 is provided between the operating pliers 1 and the fixed piece 2. A telescopic spring 5 is provided on the link rod 3, and both ends of the telescopic spring 5 are respectively connected to the fixed piece 2 and the pushing piece 6. A self-locking device is provided on the side of the operating pliers 1 close to the first clamping part 7.

[0030] Preferably, as Figure 4As shown, the operating pliers 1 include a first grip 101, a second grip 102, a first fixed end 103, and a second fixed end 104. The first grip 101 and the second grip 102 are hingedly connected. The bottom of the first grip 101 is respectively connected to the first fixed end 103 and the second fixed end 104. The other ends of the first fixed end 103 and the second fixed end 104 are respectively welded to the fixing plate 2. A round hole for passing through the connecting rod 3 is provided on the first fixed end 103. The bottom of the second grip 102 extends to the pushing plate 6. The operating pliers mainly consist of four main components: the first grip, the second grip, the first fixed end, and the second fixed end. The first grip and the second grip are hingedly connected so that they can rotate relative to each other. The two fixed ends are welded to the fixing plate, thereby fixing the entire operating pliers to the fixing plate. The operating pliers control the pushing plate, so that the first clamping part and the second clamping part approach each other and tighten to clamp the top cover of the high-voltage fuse. The design of the operating pliers enables the operator to conveniently and accurately control the pushing plate to control the movement of the first clamping part and the second clamping part, thereby completing the pressing of the top cover of the high-voltage fuse and completing the operation of replacing the fuse, improving the efficiency and safety of the operation.

[0031] Preferably, as Figures 1 to 3 shown, the first clamping part 7 is a U-shaped plate, which is welded to one end of the connecting rod 3. The second clamping part 8 is a U-shaped frame, which is welded to the lower side of the fixing plate 2. This U-shaped design is also to better adapt to the structural design of the high-voltage fuse. The U-shaped structure allows it to stably support and fix other components of the high-voltage fuse, thus ensuring that the high-voltage fuse can remain stable during the operation and will not move or fall off accidentally.

[0032] Preferably, as Figures 1 to 3As shown in the figure, the self-locking device includes a stop plate 9, a hanging piece, and a spring 4. The hanging piece is welded to the outside of the first fixed end 103. The stop plate 9 is sleeved on the connecting rod 3. The bottom of the stop plate 9 is hung on the hanging piece. A spring 4 is provided between the stop plate 9 and the outside of the first fixed end 103. The spring 4 is sleeved on the connecting rod 3. The elastic action of the spring 4 causes the stop piece to be inclined and locked on the connecting rod 3. Through the coordinated action of the stop plate, the hanging piece, and the spring, the self-locking device realizes the locking and unlocking functions of the connecting rod. The stop plate is one of the key components of the self-locking device. It is designed to be sleeved on the connecting rod 3 and can slide or rotate on the connecting rod. The bottom of the stop plate is connected to the hanging piece to ensure that it can be stably hung at a certain position. The hanging piece is a component fixed to the outside of the first fixed end. It is usually firmly connected to the first fixed end by welding or other fixing methods. The shape and position of the hanging piece are designed to cooperate with the bottom of the stop plate, allowing the stop plate to be hung on it. The spring is an element that provides elastic force in the self-locking device. It is sleeved on the connecting rod and is located between the stop plate and the outside of the first fixed end. The elastic action of the spring causes the stop plate to maintain a specific inclined angle when not subjected to external forces, so that it is stably locked on the connecting rod. When the self-locking device is in the locked state, the elastic force of the spring causes the stop plate to be inclined and locked on the connecting rod. This locked state can prevent the connecting rod from moving accidentally, thus maintaining the stability and safety of the entire mechanical system. To unlock the self-locking device, just toggle the stop plate, move it to the desired position, and then lock the self-locking device again to maintain the new position. The self-locking device mentioned here is not limited to a specific embodiment, and other self-locking methods may also appear.

[0033] Preferably, as Figure 3 shown in the figure, a through hole is provided at the bottom of the second grip 102. A fixing pin is arranged in the through hole. The outside of the fixing pin is in contact with the push piece 6. The push piece 6 is sleeved on the connecting rod 3. A through hole is designed at the bottom of the second grip. A fixing pin is installed in this through hole. The outside of the fixing pin is in close contact with the push piece. The push piece is sleeved on the connecting rod and can slide along the connecting rod. During operation, continuously squeeze the grip. The fixing pin at the bottom of the second grip drives the push piece to move along the connecting rod, compressing the telescopic spring so that the first clamping part and the second clamping part approach each other and tightly clamp the top cover of the high-voltage fuse. The setting of the fixing pin provides the connection and transmission between the push piece and the second grip, and the operation is simple.

[0034] Preferably, a stroke adjustment knob is provided between the telescopic spring 5 and the fixing plate 2. The main function of the stroke adjustment knob is to adjust the opening angle between the grips. It is provided between the telescopic spring 5 and the fixing plate 2 and is used to adjust the opening angle of the grips. By rotating the knob, the user can easily adjust the relative position between the fixing plate 2 and the connecting rod 3, thereby changing the angle between the grips. This adjustment mechanism enables the tool to adapt to operators with different hand shapes, is more humane, can meet the needs of different users, improves the comfort and convenience of operation, and enables the user to more easily complete the replacement of the high-voltage fuse.

[0035] Preferably, Figures 1 to 3 As shown, the fixing plate 2 is provided with a circular hole for passing the connecting rod 3, and the fixing plate 2 is configured as an L-shaped plate. The fixing plate is a fixing part of the entire device, and its stability is required to be relatively high. The design of the L-shaped plate provides the fixing plate with a larger contact area and supporting force, especially in the part perpendicular to the connecting rod. This design can ensure that the fixing plate is more stable when sliding on the connecting rod, and is not prone to shaking or offset. The end of the L-shaped plate can be used as an operating handle, allowing the operator to more easily apply force or adjust the angle of the tool.

[0036] Preferably, the thickness of the push piece 6 is 9.5 mm. As a key component in the auxiliary tool, the design of the push piece has an important impact on the performance and service life of the entire tool. The push piece with a thickened design not only significantly improves the structural strength and can withstand greater forces, but also has excellent wear resistance, thereby significantly improving the service life of the auxiliary tool. In particular, in terms of support and stability, during the replacement of high-voltage fuses, since heavier fuses need to be clamped and fixed, the push piece with a thickened design can provide better protection against accidental damage or failure of the tool during use.

[0037] A method for replacing an auxiliary tool for a high-voltage fuse, performing the following steps:

[0038] (1) Clip the two ends of the device onto the high-voltage fuse to ensure that the device fits tightly against the fuse, and adjust the top cover of the high-voltage fuse to a suitable position;

[0039] (2) The staff member continuously squeezes the handle of the device, and the second handle 102 drives the push piece 6 to compress the telescopic spring 5, so that the first clamping part 7 and the second clamping part 8 are continuously tightened to fix the top cover. When the top cover is completely fixed, the handle is released, and the stop plate 9 is automatically locked on the connecting rod 3;

[0040] (3) The staff screws the fuse and after completing the screwing operation, moves the stop plate 9 to release the first clamping portion 7 and remove the device.

[0041] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention. These changes involve related technologies well-known to those skilled in the art, and all of these fall within the protection scope of the patent of the present invention.

[0042] Many other changes and modifications can be made without departing from the spirit and scope of the present invention. It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. An auxiliary tool for replacing a high-voltage fuse, characterized in that: The invention comprises a connecting rod (3), a first clamping portion (7) being fixed at one end of the connecting rod (3), a baffle (10) being provided at the other end of the connecting rod (3), a fixing plate (2) being provided between the first clamping portion (7) and the baffle (10), the fixing plate (2) being slidably sleeved on the connecting rod (3), a second clamping portion (8) being provided at the bottom of the fixing plate (2), an operating clamp (1) being welded on a side of the fixing plate (2) close to the first clamping portion (7), the operating clamp (1) being slidably sleeved on the connecting rod (3), a pushing plate (6) being provided between the operating clamp (1) and the fixing plate (2), a telescopic spring (5) being provided on the connecting rod (3), and two ends of the telescopic spring (5) being respectively connected to the fixing plate (2) and the pushing plate (6), and a self-locking device being provided on a side of the operating clamp (1) close to the first clamping portion (7).

2. An auxiliary tool for replacing a high-voltage fuse according to claim 1, characterized in that: The operating pliers (1) comprise a first handle (101), a second handle (102), a first fixed end (103), and a second fixed end (104); the first handle (101) is hingedly connected to the second handle (102); the first fixed end (103) and the second fixed end (104) are respectively connected to the bottom of the first handle (101); the other ends of the first fixed end (103) and the second fixed end (104) are respectively welded to the fixing plate (2); a circular hole for passing the connecting rod (3) is provided on the first fixed end (103); and the bottom of the second handle (102) extends to the push plate (6).

3. An auxiliary tool for replacing a high-voltage fuse according to claim 2, characterized in that: The first clamping portion (7) is a U-shaped plate welded to one end of the connecting rod (3), and the second clamping portion (8) is a U-shaped frame welded to the lower side of the fixing plate (2).

4. An auxiliary tool for replacing a high-voltage fuse according to any one of claims 2 to 3, characterized in that: The self-locking device comprises a stop plate (9), a hanging plate and a spring (4), wherein the hanging plate is welded to the outer side of the first fixed end (103), the stop plate (9) is sleeved on the connecting rod (3), the bottom of the stop plate (9) is hung on the hanging plate, a spring (4) is provided between the stop plate (9) and the outer side of the first fixed end (103), the spring (4) is sleeved on the connecting rod (3), and the elastic action of the spring (4) causes the stop plate to be locked on the connecting rod (3) in an inclined manner.

5. The auxiliary tool for replacing a high-voltage fuse according to claim 4, characterized in that: A through hole is provided at the bottom of the second handle (102), a fixing pin is arranged in the through hole, the outer side of the fixing pin is in contact with the push piece (6), and the push piece (6) is sleeved on the connecting rod (3).

6. The auxiliary tool for replacing a high-voltage fuse according to claim 4, characterized in that: A travel adjustment knob is arranged between the telescopic spring (5) and the fixing plate (2).

7. The auxiliary tool for replacing a high-voltage fuse according to claim 1, characterized in that: The fixing plate (2) is provided with a circular hole for passing the connecting rod (3), and the fixing plate (2) is configured as an L-shaped plate.

8. The auxiliary tool for replacing a high-voltage fuse according to claim 1, characterized in that: The thickness of the push piece (6) is 9.5 mm.

9. A method for replacing an auxiliary tool for a high voltage fuse, characterized in that: Using an auxiliary tool for replacing a high-voltage fuse as described in any one of claims 1 to 8, perform the following steps: (1) Clip the two ends of the device onto the high-voltage fuse to ensure that the device fits tightly against the fuse, and adjust the top cover of the high-voltage fuse to a suitable position; (2) The staff member continuously squeezes the handle of the device, and the second handle (102) drives the push piece (6) to compress the telescopic spring (5), so that the first clamping part (7) and the second clamping part (8) are continuously tightened to fix the top cover. When the top cover is completely fixed, the handle is released, and the stop plate (9) is automatically locked on the connecting rod (3); (3) The staff screws the fuse and after completing the screwing operation, moves the stop plate (9) to loosen the first clamping portion (7) and remove the device.

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