CN215066825U

CN215066825U - Tripping device for simulating high-voltage fuse

Info

Publication number: CN215066825U
Application number: CN202121079928.5U
Authority: CN
Inventors: 戴文莉; 戴立德; 桂广; 邓永权
Original assignee: Zhuhai Tianou Electric Co ltd
Current assignee: Zhuhai Tianou Electric Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-12-07
Anticipated expiration: 2031-05-19

Abstract

The utility model relates to the technical field of fuses, in particular to a tripping device for a simulation high-voltage fuse; the utility model discloses a simulation high voltage fuse trip gear sets up the lockpin subassembly in one side of closing cap, is provided with on the impact bar with lockpin subassembly matched with annular groove, during the lockpin subassembly inserts annular groove under initial condition, pulls out the lockpin subassembly during the use, the impact bar is then ejecting in the twinkling of an eye under the elastic restoring force of first elastic component to reach the condition that the actual impact switch of simulation fuse trips the separating brake, simple structure, the cost of manufacture is lower, the simple operation.

Description

Tripping device for simulating high-voltage fuse

Technical Field

The utility model relates to a technical field of fuse, concretely relates to simulation high-voltage fuse dropout device.

Background

The high-voltage fuse (commonly called fuse) is a device which can cut off a fault circuit by quickly fusing the melt in a high-voltage short-circuit device under the condition that short circuit or severe overload occurs to the electric appliance/circuit, and can trip and open a related high-voltage switch by a linked firing pin so as to protect the high-voltage electric appliance from being damaged and isolate other normally-operated electric appliances from the circuit.

Meanwhile, since the high voltage fuse is a disposable electric device, if the fuse is fused, a new fuse needs to be replaced. Therefore, the high-voltage fuse protector cannot be used for testing in practical use, and a high-voltage electrical appliance matched with the high-voltage electrical appliance must use a simulation tripping device with a similar structure to check the reliability of the linkage performance of the high-voltage electrical appliance and the high-voltage fuse protector.

Most of the existing analog fuse tripping devices have the problems of complex structure and inconvenient operation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical scheme that its technical problem adopted does: an analog high voltage fuse trip unit comprising: one end of the positioning sleeve is open, and the other end of the positioning sleeve is provided with a first through hole; the sealing cover is fixedly arranged at the open end of the positioning sleeve and is provided with a second through hole; the impact rod is movably arranged on the positioning sleeve, two ends of the impact rod can respectively penetrate out of the first through hole and the second through hole, and a part of the impact rod, which is positioned in the positioning sleeve, is provided with a limiting ring protruding from the outer surface; the first elastic piece is sleeved on the area, between the sealing cover and the limiting ring, of the impact rod; the lock pin assembly is arranged on the side face of the sealing cover, an annular groove matched with the lock pin assembly is formed in the outer surface of the impact rod, and one end of the lock pin assembly can be clamped into the annular groove.

Furthermore, one end of the impact rod, which is close to the lock pin assembly, is provided with a first reset bracelet.

Further, the section of the annular groove is a concave arc surface.

Furthermore, the lock pin assembly comprises a fixed sleeve fixed on the sealing cover and a lock pin shaft movably arranged in the fixed sleeve in a penetrating mode, and a second elastic piece is sleeved on the part, located in the fixed sleeve, of the lock pin shaft.

Furthermore, one end of the lock pin shaft close to the annular groove is cambered or hemispherical.

Further, the last one end of keeping away from of lockpin axle the striking rod is provided with the second bracelet that resets.

The beneficial effects of the utility model are that: the utility model discloses a simulation high voltage fuse trip gear sets up the lockpin subassembly in one side of closing cap, is provided with on the impact bar with lockpin subassembly matched with annular groove, during the lockpin subassembly inserts annular groove under initial condition, pulls out the lockpin subassembly during the use, the impact bar is then ejecting in the twinkling of an eye under the elastic restoring force of first elastic component to reach the condition that the actual impact switch of simulation fuse trips the separating brake, simple structure, the cost of manufacture is lower, the simple operation.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an assembly schematic diagram of a simulated high voltage fuse trip device in accordance with an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a simulated high-voltage fuse trip device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 and 2, a simulated high-voltage fuse tripping device comprises a positioning sleeve 101, a cover 102, a striker 103 and a locking pin assembly, wherein one end of the positioning sleeve 101 is open, the other end of the positioning sleeve 101 is provided with a first through hole 111, the cover 102 is fixedly arranged at the open end of the positioning sleeve 101, the second cover 102 is provided with a second through hole 112, the striker 103 is accommodated in the positioning sleeve 101, and two ends of the striker 103 can respectively penetrate through the first through hole 111 and the second through hole 112, specifically, a part of the striker 103 located in the positioning sleeve 101 is provided with a limiting ring 105 protruding from an outer surface of the striker, the striker 103 is sleeved with a first elastic piece 104, the first elastic piece 104 is sleeved on an area of the striker 103 located between the cover 102 and the limiting ring 105, the striking rod 103 can slide in the positioning sleeve 101 to compress the first elastic piece 104, and one end of the striking rod 103 is driven to be ejected out of the first through hole 111 instantly by the elastic restoring force of the first elastic piece 104, so that the situation that the actual impact switch of the fuse is tripped and separated is simulated; the lock pin assembly is arranged on the side surface of the cover 102, and the outer surface of the striker rod 103 is provided with an annular groove 106 matched with the lock pin assembly; can draw out earlier in annular groove 106 to the one end card of lockpin subassembly in from second through-hole 112 through striking pole 103, spacing ring 105 moves and compresses first elastic component 104 along the direction that is close to closing cap 102 along striking pole 103 this moment, only need extract the lockpin subassembly when using, make the one end of lockpin subassembly keep away from annular groove 106 in order to relieve the restriction to striking pole 103, striking pole 103 then can be ejecting from first through-hole 111 in the twinkling of an eye under the driving of first elastic component 104, thereby reach the actual impact switch trip condition of breaking off of simulation fuse, moreover, the steam generator is simple in structure, the cost of manufacture of this simulation high voltage fuse trip gear is lower, and have the advantage of simple operation.

In some embodiments, a first reset bracelet 107 is arranged at one end of the striker 103 close to the lock pin assembly, the first reset bracelet 107 can be arranged at one end of the striker 103 close to the cover 102 through threaded connection, the outer diameter of the first reset bracelet 107 is larger than that of the striker 103, and the striker 103 can be conveniently reset by an operator until one end of the striker 103 is clamped into the annular groove 106.

In some embodiments, the locking pin assembly includes a fixed sleeve 108 fixed to the cover 102 and a locking pin shaft 109 movably disposed within the fixed sleeve 108, the part of the locking pin shaft 109 located in the fixed sleeve 108 is sleeved with a second elastic member 110, and the second elastic member 110 is compressed under a force in a normal state, the latch shaft 109 is urged by the elastic restoring force of the second elastic member 110 to always have a pressing force toward the striker 103, and further during the movement of the striking rod 103 in the axial direction thereof to compress the first elastic member 104, the lock pin shaft 109 can be driven by the second elastic element 110 to be automatically clamped into the annular groove 106, so as to lock the position of the striking rod 103, when the lock is used, only the lock pin shaft 109 needs to be pulled, so that one end of the lock pin shaft 109 is separated from the annular groove 106, and the striking rod 103 can be ejected out of the first through hole 111 under the driving of the first elastic piece 104.

In some embodiments, the cross section of the annular groove 106 is a concave arc surface, and further, one end of the locking pin shaft 109 close to the annular groove 106 is an arc surface or a semi-sphere, that is, the positions of contact between the locking pin shaft 109 and the annular groove 106 are both arc-shaped, so that the locking pin shaft 109 can be smoothly clamped into the annular groove 106, and the locking pin shaft 109 can be smoothly released from the annular groove 106 when the locking pin shaft 109 is pulled, thereby ensuring the practical stability of the trip device.

In some embodiments, a second reset bracelet 113 is disposed on one end of the lock pin shaft 109, which is far away from the striker 103, and the second reset bracelet 113 may be fixedly mounted on the lock pin shaft 109 through a bolt connection, so as to facilitate an operator to pull the lock pin shaft 109.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. An analog high voltage fuse trip unit, comprising:

one end of the positioning sleeve (101) is open, and the other end of the positioning sleeve is provided with a first through hole (111);

the cover (102) is fixedly arranged on the open end of the positioning sleeve (101), and the cover (102) is provided with a second through hole (112);

the impact rod (103) is movably arranged on the positioning sleeve (101), two ends of the impact rod can respectively penetrate out of the first through hole (111) and the second through hole (112), and a part of the impact rod (103) located in the positioning sleeve (101) is provided with a limiting ring (105) protruding from the outer surface;

the first elastic piece (104) is sleeved on the area, between the sealing cover (102) and the limiting ring (105), of the impact rod (103);

the lock pin assembly is arranged on the side face of the sealing cover (102), an annular groove (106) matched with the lock pin assembly is formed in the outer surface of the striking rod (103), and one end of the lock pin assembly can be clamped into the annular groove (106).

2. An analog high-voltage fuse trip unit according to claim 1, wherein a first reset bracelet (107) is provided on the striker bar (103) at an end adjacent to the latch assembly.

3. An analog high-voltage fuse trip unit according to claim 1, characterized in that the cross-section of the annular recess (106) is concavely curved.

4. The analog high-voltage fuse trip unit according to claim 1, wherein the locking pin assembly comprises a fixed sleeve (108) fixed on the cover (102) and a locking pin shaft (109) movably inserted into the fixed sleeve (108), and a second elastic member (110) is sleeved on a portion of the locking pin shaft (109) located in the fixed sleeve (108).

5. The analog high-voltage fuse trip unit according to claim 4, wherein the end of the locking pin (109) near the annular groove (106) is cambered or hemispherical.

6. The analog high-voltage fuse trip unit according to claim 4 or 5, wherein a second reset bracelet (113) is arranged at one end of the lock pin shaft (109) far away from the striker rod (103).