A special fixture for replacing high-voltage fuse

Abstract

The utility model is applicable to the technical field of high-voltage fuses, and discloses a special fixture for replacing high-voltage fuses, wherein a first bidirectional screw is installed on the middle end of the inner side of each hollow frame for vertical rotation through a bearing, and a lifting sleeve is movably sleeved on the outer end surfaces of each first bidirectional screw, and a transmission rod is hinged on the outer end surface of each lifting sleeve through a rotating shaft, and a clamping plate is movably fitted on the outer end surfaces of each hollow frame, and a movable plate is fixedly installed on the side end surfaces of the clamping plate, and the end of the transmission rod away from the lifting sleeve is hinged with the outer side of the movable plate through a rotating shaft. According to the technical solution of the utility model, the clamping plate can be stretched outward and moved, and after the clamping arc plate is fitted to the outer side of the fuse to clamp and fix it, the clamping plate can be fitted to the outer wall between the porcelain bottle umbrella skirts protruding from the outer side of the fuse to clamp it, thereby further improving the clamping and fixing stability of the fuse and reducing the danger of contact between the operator and the fuse.

Description

Technical Field

[0001] The utility model is applicable to the technical field of high-voltage fuses, and particularly relates to a special clamp for replacing high-voltage fuses. Background Art

[0002] At present, fuses are the simplest protective electrical appliances, which are used to protect electrical equipment from damage caused by overload and short-circuit current. Different types of high-voltage fuses, such as outdoor drop-out type and indoor type, are selected according to installation conditions and uses. When replacing the fuse, since the fuse itself is in a high-voltage environment, the corresponding fixtures will be used to replace and fix the high-voltage fuse to avoid direct contact between the operator and the fuse and cause danger.

[0003] However, when a special fixture is used to replace and clamp a high-voltage fuse, after the side of the fixture is attached to the fuse to clamp it, it can only be attached to the side wall of the fuse body and cannot increase the clamping contact surface on other parts of the outside of the fuse, which leads to insufficient clamping stability of the fixture on the fuse, affecting the replacement efficiency of the fuse. Therefore, we propose a special fixture for replacing high-voltage fuses. Utility Model Content

[0004] The main purpose of the utility model is to provide a special fixture for replacing high-voltage fuses, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A special fixture for replacing a high-voltage fuse comprises a fixed base, a transmission frame is fixedly mounted on the top surface of the fixed base, a clamping arc plate is fixedly mounted on the side surface of each transmission frame, sliding plates are slidably mounted on both sides of the top surface of the transmission frame, and a hollow frame is vertically fixedly mounted on the top surface of each sliding plate;

[0007] A first bidirectional screw rod is vertically rotatably installed at the middle end of the inner side of each hollow frame through a bearing, and a lifting sleeve is movably sleeved on the outer side surfaces of each first bidirectional screw rod, and a transmission rod is hinged on the outer side surface of each lifting sleeve through a rotating shaft, and a clamping plate is movably fitted on the outer side surfaces of each hollow frame, and a movable plate is fixedly installed on the side surfaces of the clamping plate, and an anti-skid friction pad is fixedly bonded on the outer side surface of each clamping plate, and one end of the transmission rod away from the lifting sleeve is hinged to the outer side of the movable plate through a rotating shaft;

[0008] A push rod is rotatably mounted on the top of the transmission frame through a damping bearing, and the bottom of the push rod is fixedly connected to the top surface of the first bidirectional screw rod.

[0009] By adopting the above technical scheme, under the rotational transmission action of the first bidirectional screw on the lifting sleeve and the transmission action of the transmission rod, the clamping plate can be stretched out and moved outward, and after the clamping arc plate is attached to the outside of the fuse to clamp and fix it, the clamping plate can be attached to the outer wall between the porcelain bottle umbrella skirts protruding from the outside of the fuse to clamp it, thereby further improving the clamping and fixing stability of the fuse and reducing the risk of contact between the operator and the fuse.

[0010] As an optional solution of the technical solution of the present application, a second bidirectional screw is rotatably installed inside the transmission frame through a bearing, a servo motor is fixedly installed on the side surface of the transmission frame, and the side of the servo motor transmission shaft is fixedly connected to the outer surface of the second bidirectional screw through a coupling, and movable sleeves are movably sleeved on both end surfaces of the outer side of the second bidirectional screw, and a fixed block is fixedly installed on the top surface of the outer side of each movable sleeve, and the fixed block is slidably inserted into the top of the transmission frame, and the top of the fixed block and the bottom surface of the sliding plate are fixedly connected.

[0011] By adopting the above technical solution, the second bidirectional screw drives the movable sleeve with rotation, so that the arc plate can be moved synchronously to adjust its position.

[0012] As an optional solution of the technical solution of the present application, a handheld frame is fixedly installed on the side of the fixed base.

[0013] By adopting the above technical solution, the operator can conveniently hold and use the entire mechanism through the structural function of the handheld frame.

[0014] As an optional solution of the technical solution of the present application, a limiting groove is provided on the top of the transmission frame, and the fixing block is slidably inserted into the limiting groove.

[0015] By adopting the above technical solution, the transmission rationality of the entire device is ensured by the guiding and limiting effect of the limiting groove on the fixed block.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. A special fixture for replacing high-voltage fuses according to the technical solution of the present application, wherein a rotatable first bidirectional screw rod is arranged inside a vertically arranged hollow frame, and a lifting sleeve is movably sleeved on both sides of the first bidirectional screw rod, so that when the first bidirectional screw rod rotates, the two groups of lifting sleeves can be synchronously moved relative to or toward each other, and then under the transmission conversion action of the transmission rod, the vertical movement force of the lifting sleeve can be converted into a horizontal driving force on the clamping plate, so that the clamping plate can be stretched out and moved outward, and after the clamping arc plate is attached to the outside of the fuse to clamp and fix it, the clamping plate can be attached to the outer wall between the porcelain bottle umbrella skirts protruding from the outside of the fuse to clamp it, thereby further improving the stability of the fuse clamping and fixing and reducing the risk of contact between the operator and the fuse.

[0018] 2. The technical solution of the present application is a special fixture for replacing high-voltage fuses. By sleeve-connecting a transmission sleeve on both sides of a second bidirectional lead screw and combining the rotational transmission action of the second bidirectional lead screw on the transmission sleeve, the two sets of movable sleeves can drive the clamping arc plates to move synchronously toward or relative to each other, so that the clamping arc plates can move synchronously and fit against the outer wall of the fuse to clamp and fix it, thereby further improving the stability of the operator's clamping and replacement of the fuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a special fixture for replacing a high-voltage fuse according to the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of a hollow frame of a special fixture for replacing a high-voltage fuse according to the utility model;

[0021] Figure 3 The utility model is a schematic diagram of a top-view cross-sectional structure of a transmission frame of a special fixture for replacing a high-voltage fuse.

[0022] Figure numerals: 1. fixed base; 11. hand-held frame; 2. transmission frame; 21. sliding plate; 22. hollow frame; 23. clamping arc plate; 24. first bidirectional screw rod; 25. lifting sleeve; 26. transmission rod; 27. movable plate; 28. clamping plate; 29. ​​hand push rod; 3. second bidirectional screw rod; 31. movable sleeve; 32. fixed block; 33. limit groove; 34. servo motor; 4. anti-slip friction pad. DETAILED DESCRIPTION

[0023] like Figure 1-3As shown, the utility model provides a technical solution: a special fixture for replacing high-voltage fuses, a servo motor 34 is fixedly installed on the side surface of the transmission frame 2, and the side of the servo motor 34 transmission shaft is fixedly connected to the outer surface of the second bidirectional screw rod 3 through a coupling, and the second bidirectional screw rod 3 is rotatably installed inside the transmission frame 2 through a bearing, and movable sleeves 31 are movably sleeved on the outer end surfaces of the second bidirectional screw rod 3, and a fixed block 32 is fixedly installed on the outer top surface of each movable sleeve 31, and the fixed block 32 is slidably inserted into the top of the transmission frame 2, and the top of the fixed block 32 and the bottom surface of the sliding plate 21 are fixedly connected.

[0024] In this technical solution (through Figure 1 , Figure 2 and Figure 3 As shown in FIG. 2 , a limiting groove 33 is defined at the top of the transmission frame 2 , and a fixing block 32 is slidably inserted into the limiting groove 33 .

[0025] In this technical solution (through Figure 1 , Figure 2 and Figure 3 As shown), a push rod 29 is rotatably mounted on the top of the transmission frame 2 through a damping bearing, and the bottom of the push rod 29 is fixedly connected to the top surface of the first bidirectional screw 24. Under the action of the damping bearing, the push rod 29 can only rotate under a certain external pushing force, and will not rotate under a slight pushing force.

[0026] In this technical solution (through Figure 1 , Figure 2 and Figure 3 As shown in the figure, a first bidirectional screw rod 24 is installed at the middle end of the inner side of each hollow frame 22 for vertical rotation through a bearing, a lifting sleeve 25 is movably sleeved on the outer end surfaces of each first bidirectional screw rod 24, and a transmission rod 26 is hinged on the outer end surface of each lifting sleeve 25 through a rotating shaft, a clamping plate 28 is movably fitted on the outer end surfaces of each hollow frame 22, and a movable plate 27 is fixedly installed on the side end surfaces of the clamping plate 28, and an anti-skid friction pad 4 is fixedly bonded on the outer end surface of each clamping plate 28, and one end of the transmission rod 26 away from the lifting sleeve 25 is hinged to the outer side of the movable plate 27 through a rotating shaft.

[0027] During operation, when the fuse needs to be replaced, the operator holds the hand-held frame 11 and places it outside the fuse to be replaced, and then starts the servo motor 34 to make it run and drive the second bidirectional screw rod 3 to rotate accordingly. Combined with the guiding and limiting effect of the limit groove 33 on the fixed block 32, the two sets of movable sleeves 31 can be synchronously moved horizontally inside the transmission frame 2, thereby driving the sliding plate 21 and the hollow frame 22 to move synchronously relative to each other, so that the hollow frame 22 and the clamping arc plate 23 on its side can fit the columnar outer wall between the fuse porcelain bottle umbrella skirt, so that After the hollow frame 22 and the clamping plate 28 are located between two adjacent groups of porcelain bottle umbrella skirts, the hand push rod is pushed to drive the first bidirectional screw rod 24 to rotate accordingly, which can drive the lifting sleeve 25 to move synchronously and relatively. Then, under the transmission conversion action of the transmission rod 26, the vertical movement force of the lifting sleeve 25 can be converted into a horizontal driving force for the clamping plate 28, so that the clamping plate 28 moves relatively and stretches and moves until the outer side of the clamping plate 28 is fully fitted between the outer walls of the porcelain bottle umbrella skirts protruding outside the fuse, thereby improving the clamping stability of the fuse, and then it is disassembled and replaced.

Claims

1. A special fixture for replacing a high-voltage fuse, comprising a fixed base (1), characterized in that: A transmission frame (2) is fixedly mounted on the top surface of the fixed base (1), a clamping arc plate (23) is fixedly mounted on the side surface of each transmission frame (2), sliding plates (21) are slidably mounted on both side surfaces of the top of the transmission frame (2), and a hollow frame (22) is vertically fixedly mounted on the top surface of each sliding plate (21); A first bidirectional screw rod (24) is vertically rotatably mounted on the middle end of the inner side of each hollow frame (22) via a bearing, and a lifting sleeve (25) is movably sleeved on the outer end surfaces of each first bidirectional screw rod (24), and a transmission rod (26) is hinged on the outer end surface of each lifting sleeve (25) via a rotating shaft, and a clamping plate (28) is movably fitted on the outer end surfaces of each hollow frame (22), and a movable plate (27) is fixedly mounted on the side end surfaces of the clamping plate (28), and one end of the transmission rod (26) away from the lifting sleeve (25) is hinged to the outer side of the movable plate (27) via a rotating shaft; A push rod (29) is rotatably mounted on the top of the transmission frame (2) via a damping bearing, and the bottom of the push rod (29) is fixedly connected to the top surface of the first bidirectional screw rod (24).

2. The special fixture for replacing a high-voltage fuse according to claim 1, characterized in that: A second bidirectional screw rod (3) is rotatably mounted inside the transmission frame (2) via a bearing, and movable sleeves (31) are movably sleeved on both end surfaces of the outer side of the second bidirectional screw rod (3), and a fixed block (32) is fixedly mounted on the outer top surface of each movable sleeve (31), and the fixed block (32) is slidably inserted into the top of the transmission frame (2), and the top of the fixed block (32) is fixedly connected to the bottom surface of the sliding plate (21).

3. The special fixture for replacing a high-voltage fuse according to claim 1, characterized in that: A servo motor (34) is fixedly mounted on the side surface of the transmission frame (2), and the side of the transmission shaft of the servo motor (34) is fixedly connected to the outer side surface of the second bidirectional screw rod (3) via a coupling.

4. The special fixture for replacing a high-voltage fuse according to claim 1, characterized in that: A hand-held frame (11) is fixedly mounted on the side of the fixed base (1).

5. The special fixture for replacing high-voltage fuse according to claim 1, characterized in that: A limiting groove (33) is provided on the top of the transmission frame (2), and the fixing block (32) is slidably inserted into the limiting groove (33).

6. The special fixture for replacing high-voltage fuse according to claim 1, characterized in that: An anti-skid friction pad (4) is fixedly bonded to the outer surface of each abutting plate (28).

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