Separating hook for current-limiting fuse

Abstract

The utility model discloses a separating hook for a current-limiting fuse, which comprises a base and a support arranged on the base, the base is provided with a connecting ring, the connecting ring is connected with a fuse tube, the connecting ring is provided with a conductive shell, the upper end of the conductive shell is connected with a conductive contact piece, the rear end of the connecting ring is provided with a separating piece, and the separating piece abuts against the fuse tube. The separating piece generates thrust to push the fuse tube out of the connecting ring; according to the utility model, through the mutual cooperation of the separating member and the connecting ring, the fuse tube can be quickly unhooked after the fuse wire of the fuse tube is broken, the unhooking process has good stability and does not generate oscillation and shaking, and the first locking sheet and the second locking sheet are adopted to form the locking connecting ring, so that the fuse tube can be quickly unhooked. The fuse tube can be rapidly installed on the separating hook, and rapid installation of the fuse tube is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a separation hook used for a current limiting fuse. Background Art

[0002] When the fuse is operating normally, the fuse tube forms a closed position with the help of the fuse tension. When a system fault occurs, the fault current causes the fuse to melt quickly and form an arc. The arc-extinguishing tube is heated by the arc and decomposes a large amount of gas, which forms a very high pressure inside the tube and blows strongly longitudinally along the pipe. The arc is quickly stretched and extinguished. After the fuse melts, the lower static contact loses tension and flips down, causing the tightening mechanism to release the fuse tube, which falls to form an obvious circuit breaking position.

[0003] The structure of a fuse generally includes a separation structure and a fuse tube. The installation of the existing separation structure and the fuse tube is relatively complicated, and the fuse of the fuse tube needs to be connected to the separation structure, which leads to safety difficulties and certain safety hazards. At the same time, the separation speed of the existing separation structure is slow after the fuse tube is disconnected.

[0004] For example, Chinese patent CN202111319037.7 discloses a drop-type fuse, which requires the fuse and the separation structure to be locked and tightened with each other, resulting in a difficult and complicated installation process for the fuse tube, requiring a lot of installation time to be wasted, and the separation speed is slow. Summary of the invention

[0005] The utility model mainly solves the problem of slow separation speed after the fuse tube of the fuse is disconnected in the prior art; a separation hook for a current limiting fuse is provided, which can be quickly unhooked after the fuse of the fuse tube is disconnected.

[0006] The above technical problems of the utility model are mainly solved by the following technical solutions: a separation hook for a current limiting fuse, comprising a base and a bracket installed on the base, the base is provided with a connecting ring, the connecting ring is connected to the fuse tube, the connecting ring is provided with a conductive shell, the upper end of the conductive shell is connected to a conductive contact, the rear end of the connecting ring is provided with a separating piece, the separating piece is in contact with the fuse tube, and the separating piece generates a thrust to push the fuse tube out of the connecting ring.

[0007] Preferably, the thrust generated by the separation member is smaller than the gravity of the fuse tube.

[0008] Preferably, the connecting ring includes a locking connecting ring and a separating connecting ring, a first connecting arm is provided at the upper end of the locking connecting ring, the first connecting arm is connected to the bracket, the locking connecting ring and the separating connecting ring are connected through a conductive shell, there is a gap between the locking connecting ring and the separating connecting ring, the disconnecting action distance of the fuse tube is smaller than the gap distance between the locking connecting ring and the separating connecting ring, a second connecting arm is provided at the upper end of the separating connecting ring, and the separating part is rotatably mounted on the second connecting arm.

[0009] Preferably, the separation member includes a hooking portion connected to the bracket, a movable portion connected to the connecting ring and a push plate, the movable portion includes a rotating shaft and a torsion spring arranged on the rotating shaft, the push plate covers the rear end of the connecting ring and pushes the fuse tube from the separating connecting ring to the locking connecting ring under the action of the torsion spring.

[0010] Preferably, the conductive shell is a copper sheet.

[0011] Preferably, the separation connecting ring is an integrally formed connecting ring.

[0012] Preferably, the locking connection ring comprises a first locking piece and a second locking piece, and the first locking piece and the second locking piece are fitted together by bolts to form the locking connection ring.

[0013] The beneficial effects of the utility model are as follows: through the mutual cooperation of the separation piece and the connecting ring, the fuse tube can be quickly unhooked after the fuse of the fuse tube is disconnected, and the unhooking process has good stability without vibration and jitter. The first locking piece and the second locking piece are used to form a locking connecting ring, so that the fuse tube can be quickly installed on the separation hook, thereby realizing the rapid installation of the fuse tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the separation hook of an embodiment of the utility model.

[0015] Figure 2 It is a structural schematic diagram of a torsion spring according to an embodiment of the utility model.

[0016] Figure 3 It is a structural schematic diagram of a separation piece according to an embodiment of the utility model.

[0017] In the figure, 1, bracket, 2, base, 3, conductive shell, 4, locking connecting ring, 5, separation connecting ring, 6, separation piece, 7, first connecting arm, 8, second connecting arm, 9, conductive contact piece, 10, first locking piece, 11, second locking piece, 12, hooking part, 13, push plate, 14, rotating shaft, 15, torsion spring. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0019] Example:

[0020] A disconnect hook for a current limiting fuse, such as Figure 1-3 As shown, it includes a base 2 and a bracket 1 installed on the base, the base is provided with a connecting ring, the connecting ring is connected to the fuse tube, the connecting ring is provided with a conductive shell 3, the upper end of the conductive shell is connected to a conductive contact 9, and the rear end of the connecting ring is provided with a separating piece 6, the separating piece abuts against the fuse tube, the separating piece generates a thrust to push the fuse tube out of the connecting ring, and the thrust generated by the separating piece is less than the gravity of the fuse tube.

[0021] The connecting ring includes a locking connecting ring 4 and a separating connecting ring 5. A first connecting arm 7 is arranged at the upper end of the locking connecting ring. The first connecting arm is connected to the bracket. The locking connecting ring and the separating connecting ring are connected through a conductive shell. There is a gap between the locking connecting ring and the separating connecting ring. The action distance of disconnecting the fuse tube is smaller than the gap distance between the locking connecting ring and the separating connecting ring. A second connecting arm 8 is arranged at the upper end of the separating connecting ring. The separating piece is rotatably mounted on the second connecting arm.

[0022] The separating member comprises a hooking portion 12 connected to the bracket, a movable portion connected to the connecting ring and a push plate 13. The movable portion comprises a rotating shaft 14 and a torsion spring 15 arranged on the rotating shaft. The push plate covers the rear end of the connecting ring and pushes the fuse tube from the separating connecting ring to the locking connecting ring under the action of the torsion spring.

[0023] The conductive shell is a copper sheet. The connection part where the fuse tube contacts the connecting ring is a copper sleeve, which also has the ability to conduct electricity. Therefore, after the fuse tube is installed in the connecting ring, the conductive function can be directly realized without the need to pull out the fuse in the fuse tube for electrical connection.

[0024] The separation connecting ring is an integrally formed connecting ring.

[0025] The locking connection ring comprises a first locking piece 10 and a second locking piece 11, and the first locking piece and the second locking piece are attached together by bolts to form the locking connection ring.

[0026] The working principle of the utility model is:

[0027] The bolts of the first locking piece and the second locking piece are opened, the fuse tube is installed into the locking connecting ring, and the fuse tube is pushed toward the separation connecting ring so that the fuse tube abuts against one end of the torsion spring or abuts against the push plate, and the first locking piece and the second locking piece are fixed with bolts. Under the thrust of the torsion spring and the force of the pull ring at the other end of the fuse tube, the fuse tube is limitedly installed in the connecting ring. When the fuse in the fuse tube is disconnected, the pull ring at the other end of the fuse tube is unhooked, and under the gravity of the fuse tube, the push plate is pushed downward, driving the fuse tube to move further downward, thereby realizing the rapid unhooking of the fuse tube.

[0028] The separation hook of the utility model cooperates with the separation piece and the connecting ring so that the fuse tube can be quickly unhooked after the fuse of the fuse tube is disconnected, and the unhooking process has good stability without vibration and jitter. The first locking piece and the second locking piece are used to form a locking connecting ring, so that the fuse tube can be quickly installed on the separation hook, thereby realizing the rapid installation of the fuse tube.

[0029] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A separation hook for a current limiting fuse, characterized in that: include: A base and a bracket installed on the base, the base is provided with a connecting ring, the connecting ring is connected to the fuse tube, the connecting ring is provided with a conductive shell, the upper end of the conductive shell is connected to a conductive contact, the rear end of the connecting ring is provided with a separating piece, the separating piece abuts against the fuse tube, and the separating piece generates a thrust to push the fuse tube out of the connecting ring.

2. A separation hook for a current limiting fuse according to claim 1, characterized in that: The thrust generated by the separation member is smaller than the weight of the fuse tube.

3. A separation hook for a current limiting fuse according to claim 1, characterized in that: The connecting ring includes a locking connecting ring and a separating connecting ring, a first connecting arm is arranged at the upper end of the locking connecting ring, the first connecting arm is connected to the bracket, the locking connecting ring and the separating connecting ring are connected through a conductive shell, there is a gap between the locking connecting ring and the separating connecting ring, the action distance of the fuse tube being disconnected is smaller than the gap distance between the locking connecting ring and the separating connecting ring, a second connecting arm is arranged at the upper end of the separating connecting ring, and the separating piece is rotatably mounted on the second connecting arm.

4. A separation hook for a current limiting fuse according to claim 3, characterized in that: The separation member includes a hooking portion connected to the bracket, a movable portion connected to the connecting ring, and a push plate. The movable portion includes a rotating shaft and a torsion spring arranged on the rotating shaft. The push plate covers the rear end of the connecting ring and pushes the fuse tube from the separating connecting ring to the locking connecting ring under the action of the torsion spring.

5. A separation hook for a current limiting fuse according to claim 1 or 2, characterized in that: The conductive shell is a copper sheet.

6. A separation hook for a current limiting fuse according to claim 3, characterized in that: The separation connection ring is an integrally formed connection ring.

7. A separation hook for a current limiting fuse according to claim 3, characterized in that: The locking connection ring comprises a first locking piece and a second locking piece, and the first locking piece and the second locking piece are attached together by bolts to form the locking connection ring.

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