A kind of opening mechanism for permanent magnet circuit breaker ring network cabinet

Abstract

The utility model belongs to switchgear technical field especially relates to a kind of opening mechanism for permanent-magnetic circuit breaker looped net cabinet. Including rack, operating shaft, transmission shaft, first swing arm, first connecting rod, second swing arm, third swing arm, combination and division interlock plate and isolation interlock plate, first swing arm is fixedly set on operating shaft, second swing arm is fixedly set on transmission shaft, first connecting rod first end is hinged with first swing arm one end, first connecting rod second end is hinged with second swing arm one end, third swing arm is fixedly set on transmission shaft, third swing arm one end is hinged with combination and division interlock plate one end, first sliding slot is opened in combination and division interlock plate, combination and division interlock plate is slidably set on rack by first sliding slot, isolation interlock plate is hinged with rack at a place on isolation interlock plate, isolation interlock plate upper end is contacted with third swing arm. When operating, staff only needs to rotate operating lever to complete opening operation, it is simple in structure, convenient to operate, high practicality, and wide application range.

Description

Technical Field

[0001] This utility model belongs to the field of switchgear technology, and specifically relates to a tripping mechanism for a permanent magnet circuit breaker ring main unit. Background Technology

[0002] The permanent magnet circuit breaker is normally opened and closed by the permanent magnet mechanism, and is opened by the emergency manual opening mechanism in the event of a secondary power failure.

[0003] Currently, the circuit breaker mechanisms on the market have problems such as complex structure, cumbersome operation, and high manufacturing cost, which are not conducive to widespread promotion and urgently need to be improved. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the aforementioned problems in the prior art, this utility model provides a simple and easy-to-operate tripping mechanism for permanent magnet circuit breaker ring main units.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solution adopted by this utility model includes: a tripping mechanism for a permanent magnet circuit breaker ring main unit, comprising a frame, an operating shaft, a transmission shaft, a first swing arm, a first connecting rod, a second swing arm, a third swing arm, a closing / opening interlocking plate, and an isolation interlocking plate. The operating shaft is hinged to the frame, the transmission shaft is hinged to the frame, the first swing arm is fixedly mounted on the operating shaft, the second swing arm is fixedly mounted on the transmission shaft, and the first end of the first connecting rod is hinged to one end of the first swing arm. The second end of the first connecting rod is hinged to one end of the second swing arm. The third swing arm is fixedly mounted on the transmission shaft. One end of the third swing arm is hinged to one end of the connecting / disconnecting interlocking plate. The connecting / disconnecting interlocking plate has a first sliding groove. The connecting / disconnecting interlocking plate is slidably mounted on the frame through the first sliding groove. One part of the isolation interlocking plate is hinged to the frame. The upper end of the isolation interlocking plate is in contact with the third swing arm. The lower end of the isolation interlocking plate is in contact with the disconnecting switch of the permanent magnet circuit breaker. An operating rod is fixedly mounted on one end of the operating shaft.

[0008] Furthermore, the first swing arm has two connecting holes for adjusting the connection position between the first connecting rod and the first swing arm.

[0009] Furthermore, a straight guide groove is provided at the second end of the first connecting rod, and the second swing arm is connected to the second end of the first connecting rod through the guide groove.

[0010] Furthermore, it also includes a guide plate and a sliding shaft. The guide plate is mounted on the frame, and a second sliding groove matching the sliding shaft is provided on the guide plate. A guide hole is provided on the isolation interlock plate, and the sliding shaft is fixed on the guide hole. The isolation interlock plate is slidably disposed on the guide plate through the sliding shaft and the second sliding groove.

[0011] Furthermore, it also includes a limit switch and a limit block, the limit block being fixed on the drive shaft, and the limit switch being in contact with the limit block.

[0012] (III) Beneficial Effects

[0013] The beneficial effects of this utility model are: This utility model realizes the opening control of the disconnecting switch of the permanent magnet circuit breaker through a simple linkage swing arm mechanism. During operation, the operator only needs to rotate the operating rod to complete the opening operation. It has a simple structure, is easy to operate, has high practicality, and has a wide range of applications. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the tripping mechanism of the permanent magnet circuit breaker ring main unit of this utility model;

[0015] Figure 2 This is a schematic diagram of the tripping mechanism of the permanent magnet circuit breaker ring main unit from another angle.

[0016] [Explanation of Labels in the Attached Image]

[0017] 1. Operating shaft; 2. First swing arm; 3. First connecting rod; 4. Second swing arm; 5. Drive shaft; 6. Limit switch; 7. Limit block; 8. Frame; 9. Third swing arm; 10. Combination and separation interlock plate; 11. Isolation interlock plate; 12. Guide plate; 13. Second slide groove. Detailed Implementation

[0018] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Please refer to Figure 1 , 2A tripping mechanism for a permanent magnet circuit breaker ring main unit includes a frame 8, an operating shaft 1, a transmission shaft 5, a first swing arm 2, a first connecting rod 3, a second swing arm 4, a third swing arm 9, a closing / opening interlocking plate 10, and an isolation interlocking plate 11. The operating shaft 1 and the transmission shaft 5 are hinged to the frame 8. The first swing arm 2 is fixedly mounted on the operating shaft 1, and the second swing arm 4 is fixedly mounted on the transmission shaft 5. The first end of the first connecting rod 3 is hinged to one end of the first swing arm 2. The second end is hinged to one end of the second swing arm 4, and the third swing arm 9 is fixedly mounted on the transmission shaft 5. One end of the third swing arm 9 is hinged to one end of the connecting and disconnecting interlocking plate 10. The connecting and disconnecting interlocking plate 10 is provided with a first sliding groove. The connecting and disconnecting interlocking plate 10 is slidably mounted on the frame 8 through the first sliding groove. One part of the isolation interlocking plate 11 is hinged to the frame 8. The upper end of the isolation interlocking plate 11 is in contact with the third swing arm 9, and the lower end of the isolation interlocking plate 11 is in contact with the disconnecting switch of the permanent magnet circuit breaker. One end of the operating shaft 1 is fixedly provided with an operating rod.

[0020] The beneficial effects of this utility model are as follows: This utility model realizes the opening control of the disconnecting switch of the permanent magnet circuit breaker through a simple linkage swing arm mechanism. During operation, the operator only needs to rotate the operating rod to complete the opening operation. It has a simple structure, is easy to operate, has high practicality, and has a wide range of applications.

[0021] In this embodiment, the first swing arm 2 has two connecting holes for adjusting the connection position between the first connecting rod 3 and the first swing arm 2. The purpose of providing two connecting holes is for backup; if one connecting hole has an installation problem, the other connecting hole can be used, providing strong adaptability.

[0022] In this embodiment, a straight guide groove is provided at the second end of the first connecting rod 3, and the second swing arm 4 is connected to the second end of the first connecting rod 3 through the guide groove. The second swing arm 4 has mounting holes. The straight guide groove facilitates smoother installation of the first connecting rod 3 and the second swing arm 4, avoiding installation difficulties due to large manufacturing tolerances, and reducing manufacturing difficulty and processing costs.

[0023] In this embodiment, a guide plate 12 and a sliding shaft are also included. The guide plate 12 is mounted on the frame 8, and a second sliding groove 13 matching the sliding shaft is provided on the guide plate 12. A guide hole is correspondingly provided on the isolation interlock plate 11, and the sliding shaft is fixed in the guide hole. The isolation interlock plate 11 is slidably disposed on the guide plate 12 through the cooperation of the sliding shaft and the second sliding groove 13. The above arrangement can make the movement of the isolation interlock plate 11 more stable and reliable, and improve its service life and control accuracy.

[0024] In this embodiment, a limit switch 6 and a limit block 7 are also included. The limit block 7 is fixed on the drive shaft 5, and the limit switch 6 is in contact with the limit block 7. The above arrangement can monitor and control the stroke of the drive shaft 5, avoid overtravel, and improve the reliability of the mechanism operation.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A tripping mechanism for a permanent magnet circuit breaker ring main unit, characterized in that, The device includes a frame, an operating shaft, a drive shaft, a first swing arm, a first connecting rod, a second swing arm, a third swing arm, a closing / opening interlock plate, and an isolation interlock plate. The operating shaft and the drive shaft are hinged to the frame. The first swing arm and the second swing arm are fixedly mounted on the operating shaft and the drive shaft, respectively. The first end of the first connecting rod is hinged to one end of the first swing arm, and the second end of the first connecting rod is hinged to one end of the second swing arm. The third swing arm is fixed to the drive shaft, and one end of the third swing arm is hinged to one end of the closing / opening interlock plate. The closing / opening interlock plate has a first sliding groove, through which it slides on the frame. One part of the isolation interlock plate is hinged to the frame. The upper end of the isolation interlock plate contacts the third swing arm, and the lower end of the isolation interlock plate contacts the disconnecting switch of the permanent magnet circuit breaker. An operating rod is fixed to one end of the operating shaft.

2. The tripping mechanism for a permanent magnet circuit breaker ring main unit according to claim 1, characterized in that, The first swing arm has two connecting holes for adjusting the connection position between the first connecting rod and the first swing arm.

3. The tripping mechanism for a permanent magnet circuit breaker ring main unit according to claim 1, characterized in that, The second end of the first connecting rod has a straight guide groove, and the second swing arm is connected to the second end of the first connecting rod through the guide groove.

4. The tripping mechanism for a permanent magnet circuit breaker ring main unit according to claim 1, characterized in that, It also includes a guide plate and a sliding shaft. The guide plate is mounted on the frame. The guide plate has a second sliding groove that matches the sliding shaft. The isolation interlock plate has a corresponding guide hole. The sliding shaft is fixed in the guide hole. The isolation interlock plate is slidably disposed on the guide plate through the sliding shaft and the second sliding groove.

5. The tripping mechanism for a permanent magnet circuit breaker ring main unit according to claim 1, characterized in that, It also includes a limit switch and a limit block, the limit block being fixed on the drive shaft, and the limit switch being in contact with the limit block.

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