Time-delay auxiliary switch with opening and closing angle indication
The delay auxiliary switch with integrated angle indicators addresses the issue of incorrect alignment by providing visual confirmation of split and close positions, enhancing installation accuracy and short-circuit breaking precision.
Patent Information
- Application Number
- CN202422535214.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The existing delay auxiliary switch lacks the angle indication of the split-combination angle, which increases assembly difficulty and affects the accuracy of gold for a short time.
A delay auxiliary switch with angle indication of the split-close angle is designed. By setting indicators and observation windows on the shaft, the split-close marks and angle scales are displayed to ensure the accuracy of assembly.
Through the design of signs and observation windows, the correct assembly of delay auxiliary switches and the accuracy of gold and short-term time are achieved.
Smart Images
Figure CN223108715U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of switching electrical appliances, and particularly relates to a time-delay auxiliary switch with an opening / closing angle indication. Background Technique
[0002] With the rapid development of China's power industry, the requirements for the breaking capacity and reliability of circuit breakers are getting higher and higher. According to the power industry standard DL / T755 "Guide for Power System Security and Stability", the short-circuit making time of high-voltage circuit breakers should not be greater than 60 ms, and 40 - 55 ms is recommended, which can enable the working conditions of the arc extinguishing chamber to have sufficient time to change from the closing process to the state required before opening. The opening / closing angle position of the time-delay auxiliary switch directly affects the accuracy of the short-circuit making time. However, at present, the time-delay auxiliary switch itself does not have an opening / closing angle indication, and it is very difficult to ensure the correctness of the opening / closing angle position of the time-delay auxiliary switch during on-site assembly. This not only increases the assembly difficulty, but more importantly, affects the accuracy of the short-circuit making time. Content of the Utility Model
[0003] Aiming at the above problems and making up for the deficiencies of the prior art, the utility model provides a time-delay auxiliary switch with an opening / closing angle indication; the utility model can display the opening / closing state through a new structure, and can also set specific angle scales, and ensure the correctness of on-site assembly and short-circuit making time by observing the opening / closing state.
[0004] To achieve the above object, the utility model adopts the following technical solutions.
[0005] The utility model provides a time-delay auxiliary switch with an opening / closing angle indication, including a time-delay auxiliary switch body. The middle part of the time-delay auxiliary switch is a rotating shaft and screws are arranged at the four corners. A cover plate is arranged outside the time-delay auxiliary switch. It is characterized in that a threaded hole and a boss are arranged at the end of the rotating shaft. A transition block is sleeved on the boss. An indicating plate is sleeved outside the transition block. The indicating plate can rotate synchronously with the rotating shaft and the transition block. A flat washer is arranged on the end face of the rotating shaft. The inner end face of the flat washer contacts the outer end face of the transition block, and the transition block and the flat washer are pressed tightly by a screw connected to the threaded hole of the rotating shaft. An indicating protection cover with an observation window is also sleeved on the screw of the time-delay auxiliary switch body, and the indicating plate can be observed through the observation window.
[0006] Further, a tripping mark and a closing mark are arranged on the indicating plate.
[0007] Furthermore, angle scales are also arranged on the indicating plate.
[0008] Advantages of the Utility Model
[0009] The utility model observes the opening and closing marks and specific angle scales of the indicating plate through the observation window arranged on the indicating protection cover, which can ensure the correctness of on-site assembly and short time of gold short circuit. Brief Description of the Drawings
[0010] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clearly understood, the following further details the utility model in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.
[0011] Figure 1 is an exploded structural schematic diagram of the utility model.
[0012] Figure 2 is an overall external structural schematic diagram of the utility model.
[0013] Figure 3 is a structural schematic diagram of the cover plate of the utility model.
[0014] Figure 4 is a structural schematic diagram of the indicating plate of the utility model.
[0015] Figure 5 is a schematic diagram of the display state of the observation window when the utility model is in the opening position.
[0016] Figure 6 is a schematic diagram of the display state of the observation window when the utility model is in the closing position.
[0017] Markings in the figure: 1 is the body of the time-delay auxiliary switch, 2 is the rotating shaft, 3 is the screw, 4 is the cover plate, 5 is the threaded hole, 6 is the convex platform, 7 is the transition block, 8 is the indicating plate, 9 is the flat washer, 10 is the screw, 11 is the observation window, 12 is the indicating protection cover, 13 is the opening mark, and 14 is the closing mark. Specific Embodiments
[0018] As shown in the drawings, this embodiment provides a time-delay auxiliary switch with opening and closing angle indication, including the body 1 of the time-delay auxiliary switch. The middle part of the time-delay auxiliary switch is the rotating shaft 2 and screws 3 are arranged at the four corners. The end of the screw 3 is sleeved with the cover plate 4 and the rotating shaft 2 passes through the cover plate 4. The overall structure of the time-delay auxiliary switch is the prior art and its specific structure will not be described in detail here.
[0019] The end of the rotating shaft 2 is provided with a threaded hole 5 and a convex platform 6. A transition block 7 is sleeved on the convex platform 6, and an indicating plate 8 is sleeved outside the transition block 7. The indicating plate 8 can rotate synchronously with the rotating shaft 2 and the transition block 7. The indicating plate 8 is provided with an opening mark 13 and a closing mark 14, and angle scales can also be provided.
[0020] A flat washer 9 is provided on the end face of the rotating shaft 2. The inner end face of the flat washer 9 contacts the outer end face of the transition block 7, and the transition block 7 and the flat washer 9 are pressed tightly by a screw 10 connected to the threaded hole 5 of the rotating shaft 2. An indicating protection cover 12 with an observation window 11 is also sleeved on the screw rod 3 of the time-delay auxiliary switch body 1, and the indicating plate 8 can be observed through the observation window 11.
[0021] The starting position for installing the time-delay auxiliary switch is the opening position. The rotation of the rotating shaft 2 drives the moving contact piece and the small fork of the time-delay auxiliary switch body 1 to rotate. When it rotates to a certain angle, the moving contact piece contacts the static contact piece of the time-delay auxiliary switch body 1 to achieve the connection of the ordinary contact. At this time, the small fork contacts the large fork block of the time-delay auxiliary switch body 1 and pulls the large fork block out of the time-delay plate of the time-delay auxiliary switch body 1. Affected by the torsion spring of the time-delay auxiliary switch body 1, the large fork drives the return block to rotate. The return block is connected to the transition bushing of the time-delay auxiliary switch body 1 and drives the transition bushing to rotate. The transition bushing drives the insulating piece of the time-delay auxiliary switch body 1 to rotate, and the insulating piece drives the moving contact piece to rotate and contact the static contact piece to achieve the connection of the time-delay contact.
[0022] At the same time, during this process, the rotating shaft 2 drives the transition block 7 to rotate, and the rotation of the transition block 7 drives the indicating plate 8 to rotate. When the rotating shaft 2 rotates to the opening position, the opening mark 13 set on the indicating plate 8 can be observed at the observation window 11 provided on the end face of the protection cover.
[0023] The assembly can adjust the opening position of the rotating shaft 2 of the time-delay auxiliary switch according to the actual angle of the opening mark 13 displayed at the observation window 11. Similarly, when the rotating shaft 2 rotates to the closing position, the closing mark 14 set on the indicating plate 8 can be observed at the observation window 11 provided on the end face of the protection cover.
[0024] It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those of ordinary skill in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effect; as long as it meets the use requirements, it is within the protection scope of the present invention.
Claims
1. A time-delay auxiliary switch with an opening / closing angle indicator, comprising a time-delay auxiliary switch body (1), a rotating shaft (2) in the middle of the time-delay auxiliary switch, and screws (3) arranged at four corners thereof. A cover plate (4) is arranged outside the time-delay auxiliary switch. It is characterized in that, A threaded hole (5) and a boss (6) are provided at the end of the rotating shaft (2). A transition block (7) is sleeved on the boss (6), and an indicator plate (8) is sleeved outside the transition block (7). The indicator plate (8) can rotate synchronously with the rotating shaft (2) and the transition block (7). A flat washer (9) is provided on the end face of the rotating shaft (2). The inner end face of the flat washer (9) contacts the outer end face of the transition block (7), and the transition block (7) and the flat washer (9) are pressed tightly by a screw (10) connected to the threaded hole (5) of the rotating shaft (2). An indicator protection cover (12) with an observation window (11) is also sleeved on the screw (3) of the time-delay auxiliary switch body (1). The indicator plate (8) can be observed through the observation window (11).
2. The delay auxiliary switch with an indication of the opening / closing angle according to claim 1, characterized in that, A tripping mark (13) and a closing mark (14) are provided on the indicator plate (8).
3. The time-delay auxiliary switch with a split and combined angle indication according to claim 2, characterized in that, Angle scales are also provided on the indicator plate (8).