Buffer reset device
By designing a buffer reset device, the combination of buffered top rod, compression plate and contact reset spring is used to solve the problem of contact damage during mechanical start of the AC contactor, and the contact is protected while maintaining good contact. The reliability of the starter device.
Patent Information
- Application Number
- CN202420266734.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-04
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-02-04
AI Technical Summary
When the AC contactor is manually started, due to the large mechanical stroke, it is easy to cause mechanical damage to the contacts, and there is a lack of effective buffering components to protect the contacts.
A buffer reset device is designed, including a buffered top rod, a compression plate and a contact return spring. It is fixed by auxiliary fixing blocks and nuts, adjusts the distance between the top rod and the top plate, and uses the contact return spring and the compression plate to tighten. Ensure the correct position and contactability of the contacts.
Effectively protect the contacts of the AC contactor from damage, while maintaining good contact, ensuring the reliability and stability of the starting device.
Smart Images
Figure CN222146100U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an AC contactor, in particular to a buffer resetting device. Background Art
[0002] AC contactors are widely used in the starting devices of emergency equipment such as fire hydrants. When the manual mechanical start is performed, the contacts of the AC contactor are easily damaged due to the large mechanical stroke. Therefore, a buffer component is urgently needed to be installed at the contact part of the AC contactor. Summary of the invention
[0003] In view of the problems existing in the prior art, the utility model provides a buffer reset device which can ensure that the contacts of an AC contactor are not damaged and has good contact performance.
[0004] The purpose of the utility model is achieved through the following technical solutions.
[0005] A buffer reset device comprises a buffer push rod and a clamping plate, wherein the buffer push rod is sleeved with a contact reset spring, the contact reset spring is located between the clamping plate and the contact bracket, the buffer push rod is inserted into a guide hole of the contact bracket, an auxiliary fixing block is provided on the contact of the AC contactor, and the auxiliary fixing block is mounted with a push plate through a nut.
[0006] The distance between the top rod and the top plate is no more than 0.5 mm.
[0007] The auxiliary fixing block is fixed to the AC contactor by a nut through an auxiliary push rod.
[0008] The contact return spring is fastened to the pressing plate by a fastening screw.
[0009] The electric shock bracket is installed on the contact bracket mounting base through an external hexagon screw.
[0010] Compared with the prior art, the utility model has the advantages that: the utility model can ensure that the contacts of the AC contactor are not damaged and have good contact performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of the utility model.
[0012] In the figure: 1 contact bracket mounting base 2 contact bracket 3 buffer push rod 4 clamping plate 5 top plate 6 auxiliary fixing block 18 contact return spring 27 M4 cross flat head cone hole screw 29 external hexagon screw 38 AC contactor. Implementation
[0013] The utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0014] like Figure 1 As shown, a buffer reset device, the buffer reset assembly includes a buffer push rod 3 and a clamping plate 4, the buffer push rod 3 is sleeved with a contact reset spring 18, the contact reset spring 18 is located between the clamping plate 4 and the contact bracket 2, the buffer push rod 3 is inserted into the guide hole of the contact bracket 2, and the contact of the AC contactor is provided with an auxiliary fixing block 6, and the auxiliary fixing block 6 is installed with a top plate 5 through a nut. Before the contact bracket mounting base 1 and the contact bracket 2 are fastened by the fastening screw assembly 29, the distance between the push rod 3 and the top plate 5 can be adjusted to be no more than 0.5mm. The auxiliary fixing block 6 is directly fixed to the auxiliary push rod of the AC contactor with a nut 30, and the top plate 5 and the auxiliary fixing block 6 nut 30 are screwed into place. The push rod 3 is inserted into the guide hole of the contact bracket 2, and the contact reset spring 18 is sleeved into the periphery of the buffer push rod 3 and fastened with the fastening screw M427 of the clamping plate 4. The electric shock bracket is mounted on the contact bracket mounting base by an external hexagonal screw. Accurately adjust the position of the clamping plate 4 and the push rod 3 on the installation position of the auxiliary contact of the AC contactor 38, so as to ensure that the distance between the stroke component of the starting device and the clamping plate 4 is 0 mm. Under the buffering effect of the contact return spring, the AC contactor contact is correctly and reliably sent to the position to connect the fire pump motor.
Claims
1. A buffer reset device, characterized in that It includes a buffer push rod and a clamping plate, the buffer push rod is sleeved with a contact reset spring, the contact reset spring is located between the clamping plate and the contact bracket, the buffer push rod is inserted into the guide hole of the contact bracket, and an auxiliary fixing block is provided on the contact of the AC contactor, and the auxiliary fixing block is installed with a push plate through a nut.
2. A buffer reset device according to claim 1, characterized in that The distance between the buffer push rod and the top plate is no more than 0.5 mm.
3. A buffer reset device according to claim 1, characterized in that The auxiliary fixing block is fixed to the AC contactor by a nut through an auxiliary push rod.
4. A buffer reset device according to claim 1, characterized in that The contact return spring is fastened to the pressing plate by a fastening screw.
5. A buffer reset device according to claim 1, characterized in that The contact bracket is mounted on the contact bracket mounting base by means of external hexagonal screws.