An auxiliary operating tool for a drop-out fuse

Abstract

The utility model discloses an auxiliary operation instrument of drop-out fuse, related to electric power equipment auxiliary tool technical field, including operating lever and the open -and -close subassembly of installation in operating lever top, open -and -close subassembly includes installation department and open -and -close department, and installation department includes mounting seat, and open -and -close department includes guide frame, contact rod and tension spring, and guide frame detachable installation is on mounting seat, and the end portion fixed with mounting block of guide frame away from its with mounting seat is connected, and contact rod sets up horizontally, and is connected with mounting block through tension spring. The utility model discloses utilize contact rod to close and disconnect the operation when all can utilize tension spring and play the buffering effect, can effectively reduce the occurrence of the damage condition of fuse tube that too much force leads to, when too much force leads to tension spring to continue playing the buffering effect when closing and disconnecting operation process, and contact half pole is separated from the spacing slide bar and loses the spacing effect, thereby losing the support effect to fuse tube, further prevent too much force leading to fuse tube damage.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tools for power equipment, and in particular to an auxiliary operating tool for a drop-out fuse. Background Technology

[0002] Drop-out fuses are the most commonly used short-circuit protection switches for 10kV distribution line branches and distribution transformers. With the expansion of power grid distribution system construction, the number of drop-out fuses in the distribution system has exploded, leading to increasingly frequent operation and fault handling of these fuses. In existing technology, the closing and opening operations of drop-out fuses are achieved through a lever.

[0003] A search revealed, for example, a drop-out fuse operating lever provided by patent publication number CN218414461U, includes: a handheld part and an operating part connected thereto via a connecting assembly; the connecting assembly includes two rotating connecting parts and a locking part, the two rotating connecting parts being fixedly connected to the handheld part and the operating part respectively, the two rotating connecting parts being detachably rotatably connected to each other, and the locking part being disposed between the two rotating connecting parts to fix the positional state between the two rotating connecting parts; based on the relative position of the drop-out fuse and the operator, the two rotating connecting parts are rotated relative to each other, thereby changing the angle between the handheld part and the operating part, so that the handheld part and the operating part reach the optimal operating angle, and then the position of the two rotating connecting parts is fixed by the locking part, thereby fixing the angle between the handheld part and the operating part, and then the operating part is used to perform the closing and opening operations of the fuse tube of the drop-out fuse.

[0004] Based on the above search and in conjunction with existing technologies, it has been found that the operating rods of drop-out fuses disclosed above, used for closing and disconnecting, are all fixed, rigid structures. However, in actual operation, excessive force can be applied during closing and disconnecting. The fixed, rigid structure lacks buffering or clearance space when excessive force is applied, which can easily damage the fuse tube. Therefore, an auxiliary operating tool for drop-out fuses is proposed to improve the above-mentioned problems. Utility Model Content

[0005] The purpose of this application is to provide an auxiliary operating tool for drop-out fuses to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: an auxiliary operating tool for a drop-out fuse, including an operating rod and an opening and closing assembly installed on the top of the operating rod, the opening and closing assembly including a mounting part and an opening and closing part;

[0007] The mounting section includes a mounting base, and the opening and closing section includes a guide frame, a contact rod, and a tension spring;

[0008] The guide frame is detachably mounted on the mounting base. A mounting block is fixed to the end of the guide frame away from its connection with the mounting base. The contact rod is horizontally set and connected to the mounting block by a tension spring.

[0009] As a further supplement to this solution, the mounting base and the guide frame are connected by fixing bolts.

[0010] As a further supplement to this solution, the mounting section also includes an extension seat, which is fixed to the upper end of the mounting base. The mounting block and the extension seat are also connected by fixing bolts.

[0011] As a further supplement to this solution, a limit slide rod is vertically fixed on the mounting block, and the contact rod is vertically slidably sleeved on the outside of the limit slide rod.

[0012] As a further supplement to this solution, the contact rod includes two contact half rods, which are symmetrically arranged about the axis of the operating rod. The guide frame is provided with a rectangular limiting slide hole for the vertical sliding of the contact half rod, and the length of the limiting slide rod is less than the height of the guide frame.

[0013] As a further supplement to this solution, the guide frame is V-shaped, and the V-shaped opening of the guide frame faces the side where the mounting block is located.

[0014] As a further supplement to this solution, the operating lever is a telescopic lever, with an insulating sleeve fitted at the bottom end of the operating lever, and an insulating limiting plate fixedly fitted to the outside of the operating lever is provided on the upper side of the insulating sleeve.

[0015] In summary, the technical effects and advantages of this utility model are as follows:

[0016] 1. In this utility model, the guide frame, contact rod and tension spring are designed in combination. When the contact rod is closed and opened, the tension spring can play a buffering role, which can effectively reduce the occurrence of damage to the fuse tube caused by excessive force.

[0017] 2. In this utility model, by setting the contact half rod, when the force is too strong during the closing and opening operation, causing the tension spring to lose its buffering effect, the contact half rod continues to slide along the limit slide rod until it disengages from the limit slide rod. At this time, the contact half rod loses the limiting effect of the limit slide rod, thereby losing its supporting effect on the fuse tube, further preventing the fuse tube from being damaged due to excessive force. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure in this embodiment;

[0020] Figure 2 This is a schematic diagram of the opening and closing component used in the closed state in this embodiment;

[0021] Figure 3 This is a schematic diagram of the opening and closing component used in the open state in this embodiment.

[0022] In the diagram: 1. Operating lever; 2. Mounting part; 21. Mounting base; 22. Extension base; 3. Opening and closing part; 31. Guide frame; 3101. Rectangular limiting sliding hole; 32. Contact rod; 321. Contact half rod; 33. Tension spring; 34. Limiting sliding rod; 35. Mounting block; 4. Insulating sleeve; 5. Insulating limiting plate; 6. Fixing bolt. Detailed Implementation

[0023] 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.

[0024] Example: Reference Figure 1-3 The auxiliary operating tool for a drop-out fuse shown includes an operating lever 1 and an opening / closing assembly mounted on the top of the operating lever 1. The opening / closing assembly includes a mounting part 2 and an opening / closing part 3.

[0025] The mounting part 2 includes a mounting base 21, and the opening and closing part 3 includes a guide frame 31, a contact rod 32, and a tension spring 33. The guide frame 31 is detachably mounted on the mounting base 21. Specifically, the mounting base 21 and the guide frame 31 are connected by fixing bolts 6. A mounting block 35 is fixed to the end of the guide frame 31 away from its connection with the mounting base 21. The contact rod 32 is horizontally arranged and connected to the mounting block 35 by the tension spring 33.

[0026] By using the guide frame 31, contact rod 32 and tension spring 33 in combination, the tension spring 33 can act as a buffer when the contact rod 32 is used for closing and opening operations, which can effectively reduce the occurrence of damage to the fuse tube caused by excessive force.

[0027] The mounting part 2 also includes an extension seat 22, which is fixed to the upper end of the mounting base 21. The mounting block 35 and the extension seat 22 are also connected by fixing bolts 6.

[0028] When closing is required, the opening / closing part 3 and the mounting part 2 are combined as follows: Figure 2 As shown in the diagram; when it is necessary to open the gate, the opening / closing part 3 and the mounting part 2 are combined as shown. Figure 3 The states shown above; both states enable the contact rod 32 to work in conjunction with the tension spring 33 to provide a buffering effect. Figure 2 and Figure 3 The bold dashed arrows in the text indicate the direction of force on the contact rod 32.

[0029] The mounting block 35 has a vertically fixed limiting slide rod 34. The contact rod 32 is vertically slidably sleeved on the outside of the limiting slide rod 34. The contact rod 32 includes two contact half rods 321, which are symmetrically arranged about the axis of the operating rod 1. The guide frame 31 is provided with a rectangular limiting slide hole 3101 for the vertical sliding of the contact half rod 321. The length of the limiting slide rod 34 is less than the height of the guide frame 31. When the force is too strong during the closing and opening operation, causing the tension spring 33 to lose its buffering function, the contact half rod 321 continues to slide along the limiting slide rod 34 until it is separated from the limiting slide rod 34. At this time, the contact half rod 321 loses the limiting function of the limiting slide rod 34, thereby losing the support function for the fuse tube, further preventing the fuse tube from being damaged due to excessive force. Of course, when the contact half rod 321 is separated from the limiting slide rod 34, there is still space inside the guide frame 31 for the fuse tube to continue to move in the original direction of movement, thereby ensuring that the fuse tube is not prone to hard collision with the guide frame 31.

[0030] The guide frame 31 is V-shaped, and the V-shaped opening of the guide frame 31 faces the side where the mounting block 35 is located. The V-shaped guide frame 31 has a large opening, which makes it easy to accurately align the fusion tube.

[0031] To facilitate carrying the auxiliary tool, the operating lever 1 is a telescopic lever, with an insulating sleeve 4 fitted at the bottom end of the operating lever 1, and an insulating limiting plate 5 fixedly fitted to the outside of the operating lever 1 on the upper side of the insulating sleeve 4.

[0032] The working principle of this utility model is as follows: When closing is required, the opening / closing part 3 and the mounting part 2 are combined as follows. Figure 2 As shown in the diagram; when it is necessary to open the gate, the opening / closing part 3 and the mounting part 2 are combined as shown. Figure 3 The state shown;

[0033] When using the contact rod 32 to close and open the circuit, the tension spring 33 can act as a buffer, which can effectively reduce the occurrence of damage to the fuse tube caused by excessive force.

[0034] When excessive force is applied during the closing and disconnecting operations, causing the tension spring 33 to lose its buffering function, the contact half rod 321 continues to slide along the limit slide rod 34 until it disengages from the limit slide rod 34. At this point, the contact half rod 321 loses the limiting function of the limit slide rod 34, thereby losing its supporting function for the fuse tube, further preventing damage to the fuse tube due to excessive force.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auxiliary operating tool for a drop-out fuse, comprising an operating lever (1) and an opening / closing assembly mounted on the top of the operating lever (1), characterized in that, The opening and closing assembly includes a mounting part (2) and an opening and closing part (3); The mounting part (2) includes a mounting base (21), and the opening and closing part (3) includes a guide frame (31), a contact rod (32), and a tension spring (33); The guide frame (31) is detachably mounted on the mounting base (21). A mounting block (35) is fixed to the end of the guide frame (31) away from its connection with the mounting base (21). The contact rod (32) is horizontally arranged and connected to the mounting block (35) through a tension spring (33).

2. The auxiliary operating tool for a drop-out fuse according to claim 1, characterized in that: The mounting base (21) and the guide frame (31) are connected by fixing bolts (6).

3. The auxiliary operating tool for a drop-out fuse according to claim 2, characterized in that: The mounting part (2) also includes an extension seat (22), which is fixed to the upper end of the mounting base (21). The mounting block (35) and the extension seat (22) are also connected by fixing bolts (6).

4. The auxiliary operating tool for a drop-out fuse according to claim 1, characterized in that: The mounting block (35) is vertically fixed with a limiting slide rod (34), and the contact rod (32) is vertically slidably sleeved on the outside of the limiting slide rod (34).

5. The auxiliary operating tool for a drop-out fuse according to claim 4, characterized in that: The contact rod (32) includes two contact half rods (321), which are symmetrically arranged about the axis of the operating rod (1). The guide frame (31) is provided with a rectangular limiting slide hole (3101) for the vertical sliding of the contact half rod (321). The length of the limiting slide rod (34) is less than the height of the guide frame (31).

6. An auxiliary operating tool for a drop-out fuse according to any one of claims 1-5, characterized in that: The guide frame (31) is V-shaped, and the V-shaped opening of the guide frame (31) faces the side where the mounting block (35) is located.

7. The auxiliary operating tool for a drop-out fuse according to claim 1, characterized in that: The operating lever (1) is a telescopic lever. An insulating sleeve (4) is sleeved on the bottom end of the operating lever (1). An insulating limiting plate (5) is fixedly sleeved on the upper side of the insulating sleeve (4) and is fitted on the outside of the operating lever (1).

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