Push-pull type power switch actuating mechanism
By designing a combined structure of steel balls and stepped grooves, the problem of sudden tripping of the vacuum circuit breaker actuator during current fluctuations was solved, achieving the effect of preventing sudden tripping after closing and improving the stability of the switch.
Patent Information
- Application Number
- CN202520054534.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-10
AI Technical Summary
The actuators of existing vacuum circuit breakers are prone to tripping unexpectedly when the current fluctuates.
Design a push-pull power switch actuator that uses a combination of steel balls and stepped grooves to limit the downward movement of the moving block under electromagnetic force, ensuring that the switch does not trip unexpectedly after closing.
It effectively prevents the vacuum circuit breaker from tripping unexpectedly when the current fluctuates, thus improving the stability and reliability of the switch.
Smart Images
Figure CN223785078U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to power switch technical field more specifically, relate to a kind of push-pull type power switch actuator. BACKGROUND
[0002] Vacuum circuit breaker is the abbreviation of vacuum arc-extinguishing circuit breaker, also known as arc-extinguishing circuit breaker that can occur in vacuum medium. Its working principle is: when the moving and static contacts of vacuum circuit breaker are opened under the action of operating mechanism, electric arc is generated between the contacts, and steam is emitted from the contact surface under high temperature. Due to the special shape of the contact, a magnetic field is generated when the current passes through, and the electric arc moves rapidly along the tangent direction of the contact surface under the action of this magnetic field, and part of the metal vapor condenses on the metal cylinder. When the electric arc naturally crosses zero, it is extinguished, and the dielectric strength between the contacts is quickly restored.
[0003] At present, the actuator of vacuum circuit breaker is mainly driven by electromagnetic operating mechanism to complete the closing and opening actions of circuit breaker. However, the prerequisite for stable closing and opening of electromagnetic operating mechanism is the stable and continuous output of current to form a stable magnetic field to maintain the closing and opening actions. When the current fluctuates, the switch is prone to jump. In view of this, we propose a push-pull type power switch actuator. UTILITY MODEL CONTENTS
[0004] The utility model aims to overcome the shortcomings of the prior art, meet the needs of reality, and provide a push-pull type power switch actuator to solve the technical problem of easy jump of switch when current fluctuates in the current existing actuator.
[0005] To solve the above technical problems, the utility model provides the following technical scheme: a push-pull type power switch actuator, comprising an electromagnetic mechanism with a sliding sleeve detachably and movably installed outside;
[0006] The electromagnetic mechanism comprises an electromagnet a with a support column formed in the center of the top, a moving block connected to the top end of the support column, an electromagnet b movably arranged on the top of the electromagnet a, a support sleeve fixedly connected to the top of the electromagnet b, at least two side holes symmetrically opened on the outer edge surface of the support sleeve, and a steel ball arranged in the side hole.
[0007] The sliding sleeve comprises a sliding seat movably arranged outside the support sleeve, a through hole formed in the middle of the sliding seat for the support sleeve to pass through, and a stepped groove formed in the inner edge surface of the bottom of the sliding seat, wherein the inner walls of the through hole and the stepped groove are in movable abutment with the steel ball.
[0008] The utility model discloses a steel ball and ladder groove are designed, when vacuum circuit breaker executes the closing action, it makes electromagnet b and electromagnet a attract by electromagnetic force, at this moment, the movable block is moved up under the attraction of electromagnetic force, and can be through the pull -up sliding seat, because the ladder groove is ladder shape, so the inner diameter of the contact surface of ladder groove and steel ball reduces after pulling up, make the steel ball that contacts the inner edge surface of ladder groove shrink inwards and be extruded by the extrusion of the inner edge surface of ladder groove and project on the inner edge surface of support sleeve, can limit movable block, limit the movable block and move down, thereby realize the effect that vacuum circuit breaker closes and prevents the jump of stealing, solved the problem that existing actuating mechanism is easy to jump of stealing when current fluctuation appears.
[0009] Preferably, the bottom end of the movable block is configured to form a circular truncated cone structure, and the outer surface of the steel ball is movably abutted against the outer edge surface of the movable block and the inclined surface of the bottom end circular truncated cone structure.
[0010] Preferably, a linear bearing is arranged between the top of the inner edge surface of the sliding seat and the outer edge surface of the support sleeve, and the inner ring and the outer ring of the linear bearing are fixed to the outer edge surface of the support sleeve and the inner edge surface of the rotary sliding seat, respectively.
[0011] Preferably, the electromagnet b is in a ring structure with an inner hollow for the support column and the movable block to pass through, and a slot hole is formed in the middle of the bottom end of the support sleeve for the support column to pass through.
[0012] Preferably, a spring is sleeved on the outer edge surface of the support column, the bottom end of the spring is fixedly connected to the electromagnet a, and the top end of the spring is movably abutted against the bottom of the support sleeve.
[0013] Preferably, the side hole is in a ball hole structure, and the steel ball is movably arranged in the side hole.
[0014] Compared with the prior art, the utility model has the beneficial effects that:
[0015] The utility model discloses a steel ball and ladder groove are designed, when vacuum circuit breaker executes the closing action, it makes electromagnet b and electromagnet a attract by electromagnetic force, at this moment, the movable block is moved up under the attraction of electromagnetic force, and can be through the pull -up sliding seat, because the ladder groove is ladder shape, so the inner diameter of the contact surface of ladder groove and steel ball reduces after pulling up, make the steel ball that contacts the inner edge surface of ladder groove shrink inwards and be extruded by the extrusion of the inner edge surface of ladder groove and project on the inner edge surface of support sleeve, can limit movable block, limit the movable block and move down, thereby realize the effect that vacuum circuit breaker closes and prevents the jump of stealing, solved the problem that existing actuating mechanism is easy to jump of stealing when current fluctuation appears. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is the structural schematic diagram of the utility model;
[0017] Figure 2 It is the utility modelFigure 1 a sectional view of the utility model;
[0018] Figure 3 the utility model Figure 1 a split schematic diagram;
[0019] Figure 4 a sectional view of the utility model sliding sleeve.
[0020] Figure label explanation:
[0021] 1, electromagnetic mechanism; 101, electromagnet a; 102, support column; 103, moving block; 104, spring; 2, electromagnet b; 3, support sleeve; 4, side hole; 5, steel ball; 6, linear bearing; 7, sliding sleeve; 701, sliding seat; 702, stepped groove. Specific embodiments
[0022] As Figures 1-4 shown, the utility model relates to a kind of push-pull type electric power switch executing mechanism, including the electromagnetic mechanism 1 of detachable external movable installation sliding sleeve 7, the electromagnetic mechanism 1 includes the electromagnet a 101 of top center configuration formed with support column 102, the top end of the support column 102 is connected with moving block 103, the top of the electromagnet a 101 movably is provided with electromagnet b 2, the top of the electromagnet b 2 is fixedly connected with support sleeve 3, at least two side holes 4 are symmetrically provided on the outer edge surface of support sleeve 3, steel ball 5 is arranged in side hole 4, sliding sleeve 7 includes the sliding seat 701 of movable cover in the external of support sleeve 3, the middle part of sliding seat 701 is formed with the through hole for the support sleeve 3 to go out, and the inner edge surface bottom of sliding seat 701 is formed with stepped groove 702, and the inner wall of through hole and stepped groove 702 is movably contacted with steel ball 5.
[0023] In the embodiment of the utility model, the bottom end of the moving block 103 is formed into a circular truncated cone structure, the outer surface of the steel ball 5 is movably contacted with the outer edge surface of the moving block 103 and the inclined surface of the bottom end circular truncated cone structure, the linear bearing 6 is arranged between the top of the inner edge surface of the sliding seat 701 and the outer edge surface of the support sleeve 3, and the inner ring and outer ring of the linear bearing 6 are fixed on the outer edge surface of the support sleeve 3 and the inner edge surface of the rotating sliding seat 701 respectively.
[0024] In the embodiment of the utility model, the electromagnet b 2 is hollow ring structure for the support column 102 and moving block 103 to go out, the bottom end of the support sleeve 3 is formed with the slot hole for the support column 102 to go out, the spring 104 is sleeved on the outer edge surface of the support column 102, the bottom end of the spring 104 is fixedly connected to the electromagnet a 101, and the top end of the spring 104 is movably contacted with the bottom of the support sleeve 3.
[0025] In the embodiment of the utility model, the side hole 4 is in a ball hole structure, and the steel ball 5 is movably arranged in the side hole 4.
[0026] Working principle: the embodiment provides a push-pull type electric power switch executing mechanism, when in use, when the vacuum circuit breaker performs the closing action, the electromagnet b2 and the electromagnet a101 are attracted by electromagnetic force, at this time, the moving block 103 is moved up under the attraction of the electromagnetic force, and can pass through the pull-up sliding seat 701, since the stepped groove 702 is in a stepped shape, the inner diameter of the contact surface of the stepped groove 702 and the steel ball 5 is reduced after being pulled up, so that the steel ball 5 in contact with the inner edge surface of the stepped groove 702 is inwards contracted and is extruded by the inner edge surface of the stepped groove 702 and protrudes from the inner edge surface of the supporting sleeve 3, that is, the moving block 103 can be limited, and the downward movement of the moving block 103 is limited, when opening, the sliding seat 701 is pressed down, so that the steel ball 5 is retracted from the inner edge surface of the supporting sleeve 3, the limitation of the downward movement of the moving block 103 is contacted, and the subsequent opening action can be completed.
[0027] The embodiment of the utility model discloses the better embodiment, but is not limited to this, the ordinary skill in the art, the spirit of the utility model is easily understood according to the above-mentioned embodiment, and different extension and change are made, but as long as not departing from the spirit of the utility model, all are within the protection scope of the utility model.
Claims
1. A push-pull power switch actuator, characterized by, The electromagnetic mechanism (1) is detachably mounted with a sliding sleeve (7) outside; The electromagnetic mechanism (1) comprises an electromagnet a (101) with a support column (102) centrally arranged on the top of the electromagnet a (101), a moving block (103) connected to the top end of the support column (102), an electromagnet b (2) movably arranged on the top of the electromagnet a (101), a support sleeve (3) fixedly connected to the top of the electromagnet b (2), at least two side holes (4) symmetrically arranged on the outer edge surface of the support sleeve (3), and a steel ball (5) arranged in the side hole (4). The sliding sleeve (7) comprises a sliding seat (701) movably arranged outside the support sleeve (3), a through hole formed in the middle of the sliding seat (701) for the support sleeve (3) to pass through, and a stepped groove (702) formed in the inner edge surface of the sliding seat (701), wherein the inner walls of the through hole and the stepped groove (702) are in movable abutment with the steel ball (5).
2. A push-pull electric power switch actuator according to claim 1, characterized in that The bottom end of the moving block (103) is configured in a circular truncated cone structure, and the outer surface of the steel ball (5) is in movable abutment with the outer edge surface of the moving block (103) and the inclined surface of the bottom end circular truncated cone structure.
3. A push-pull electric power switch actuator according to claim 1, wherein A linear bearing (6) is arranged between the top of the inner edge surface of the sliding seat (701) and the outer edge surface of the support sleeve (3), and the inner ring and the outer ring of the linear bearing (6) are fixedly arranged on the outer edge surface of the support sleeve (3) and the inner edge surface of the sliding seat (701), respectively.
4. A push-pull electric power switch actuator according to claim 1, wherein The electromagnet b (2) is in an annular structure with an inner hollow for the support column (102) and the moving block (103) to pass through, and a slot hole is centrally formed in the bottom end of the support sleeve (3) for the support column (102) to pass through.
5. A push-pull electric power switch actuator according to claim 1, wherein A spring (104) is sleeved on the outer edge surface of the support column (102), the bottom end of the spring (104) is fixedly connected to the electromagnet a (101), and the top end of the spring (104) is in movable abutment with the bottom of the support sleeve (3).
6. A push-pull electric power switch actuator according to claim 1, wherein, The side hole (4) is in a ball hole structure, and the steel ball (5) is movably arranged in the side hole (4).