Locking assembly of electric operating mechanism
Through the electric operating mechanism designed with a multi-interlocking structure, the complexity and safety risks of existing locking components are solved, and higher safety performance and convenient operation are achieved, ensuring the safety of the circuit breaker.
Patent Information
- Application Number
- CN202420095644.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-15
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-15
AI Technical Summary
The locking components of the existing circuit breaker electric operating mechanism have complex structure design, unstable performance, safety hazards, and inconvenient operation.
The structure design adopts multiple interlocking, including mechanism frame, safety lock, lock wheel, tripping member, slider lock plate, micro switch, hand automatic switching slide plate and reset spring, locking the electric operating mechanism through the linkage mechanism to prevent non- Authorize the switch-closing operation.
It improves the safety performance of the locking components, ensures simple structure, stable and reliable performance, convenient operation and high safety, and avoids others operating the circuit breaker at will.
Smart Images
Figure CN222146027U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit breakers, in particular to a locking assembly for an electric operating mechanism of a circuit breaker. Background Art
[0002] A circuit breaker is a distribution device used in a power grid. It can connect, carry and disconnect current under normal circuit conditions, and can also connect, carry and disconnect current for a certain period of time under specified abnormal conditions (such as overload, short circuit, undervoltage and single-phase grounding fault). The electric operating mechanism is a special accessory for molded case circuit breakers. When used in conjunction with the circuit breaker, it can remotely close, disconnect and re-lock the circuit breaker to achieve centralized and automatic control of the transmission and distribution network. With the development of the power industry, the operating mechanism of molded case circuit breakers has gradually become the mainstream of current development, and the design is developing towards miniaturization and intelligence. In order to ensure the personal safety of maintenance personnel, the existing electric operating mechanism of circuit breakers is equipped with a locking component. During maintenance, the locking component can lock the manual opening and closing and electric opening and closing functions of the electric operating mechanism to prevent others from opening or closing the circuit breaker at will. However, the structural design of the existing locking assembly is unreasonable, the locking assembly is complex, the locking is unreliable, and there are even safety hazards. Therefore, the locking assembly of the electric operating mechanism has the defects of complex structure, unstable performance, low safety, and inconvenient operation. Summary of the invention
[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a locking assembly of an electric operating mechanism with simple structure, stable and reliable performance, convenient operation and high safety.
[0004] To achieve the above-mentioned purpose, the utility model adopts a locking assembly of an electric operating mechanism, including a mechanism frame, a safety lock arranged on the mechanism frame, a locking wheel cooperating with the safety lock, a release member arranged on the mechanism frame, a slider locking piece rotatably arranged on the mechanism frame and used to lock the slider and the release member, a tension spring arranged between the slider locking piece and the mechanism frame, a first micro switch arranged on the mechanism frame and cooperating with the locking wheel, a manual-automatic switching slide plate slidably arranged on the mechanism frame, a second micro switch arranged on the mechanism frame and cooperating with the manual-automatic switching slide plate, a manual-automatic locking piece rotatably arranged on the mechanism frame and cooperating with the locking wheel, and a reset tension spring arranged between the mechanism frame and the manual-automatic locking piece, wherein the locking wheel is provided with a reset spring which is movable with the first micro switch The cam portion cooperates with each other, the cam portion moves with the locking wheel and triggers the first microswitch to realize the connection or disconnection of the first microswitch, the cam portion is provided with a lever portion for driving the manual-automatic locking plate to move, the manual-automatic locking plate moves with the lever portion and abuts on the manual-automatic switching slide, and constitutes a limiting cooperation between the manual-automatic locking plate and the manual-automatic switching slide, the locking wheel is provided with a convex strip cooperating with the slider locking plate, the convex strip is inserted in the toggle groove of the slider locking plate, the convex strip moves with the locking wheel and reciprocates in the toggle groove, and constitutes a linkage cooperation between the slider locking plate and the convex strip, the slider locking plate moves with the convex strip and abuts on the slider and the release member respectively, and constitutes a limiting cooperation between the slider locking plate and the slider and the release member.
[0005] The beneficial effect of the above structure is that the locking component of the electric operating mechanism adopts a multi-interlocking structural design, which effectively improves the safety performance of the locking component. During maintenance, the user first turns the manual automatic switching slide to the electric position, and the manual automatic switching slide blocks the manual operation hole, and the manual operation function of the electric operating mechanism is locked; the user then turns the lock core in the safety lock with the key, and the lock core drives the lock wheel to move, and the lock wheel can trigger the first micro switch, and the first micro switch cuts off the power supply of the motor of the electric operating mechanism, so that the electric function of the electric operating mechanism can be locked; and the convex strip of the lock wheel drives the slider lock piece to move, and the slider lock piece can lock the release part in the release position, and the user cannot press the release part; and the slider lock piece can contact the slider to realize the locking of the slider lock piece and the slider, and the user cannot manually open and close the switch, thereby preventing others from arbitrarily opening or closing the circuit breaker, which is beneficial to improve the safety performance of the locking component of the electric operating mechanism of the circuit breaker. Therefore, the locking component of the electric operating mechanism has the advantages of simple structure, stable and reliable performance, convenient operation and high safety.
[0006] In particular, the manual-automatic locking plate is provided with a limiting convex block that cooperates with the manual-automatic switching slide plate, and the limiting convex block moves with the manual-automatic locking plate and contacts the manual-automatic switching slide plate, and forms a limiting cooperation between the limiting convex block and the manual-automatic switching slide plate. The manual-automatic locking plate contacts the manual-automatic switching slide plate through the limiting convex block, thereby ensuring reliable locking of the manual-automatic locking plate and the manual-automatic switching slide plate.
[0007] In particular, one end of the slider locking piece has a limiting column matched with the slider, and the slider is provided with a limiting groove matched with the limiting column, and the limiting column moves with the slider locking piece and abuts in the limiting groove, and forms a limiting match between the limiting column and the slider. The slider locking piece is engaged in the limiting groove of the slider through the limiting column, thereby ensuring reliable locking of the slider locking piece and the slider.
[0008] In particular, the other end of the slider locking piece has a limiting piece, and the release member is provided with a locking piece that matches the limiting piece, and the limiting piece moves with the slider locking piece and contacts the locking piece, and forms a limiting match between the limiting piece and the locking piece. The slider locking piece contacts the locking piece of the release member through the limiting piece, thereby ensuring that the slider locking piece and the release member can be reliably locked.
[0009] In particular, the slider lock piece has a shaft portion in the middle, the mechanism frame is provided with a positioning hole matched with the shaft portion, and the shaft portion is rotatably arranged in the positioning hole. The slider lock piece is rotatably arranged on the mechanism frame through the shaft portion, thereby ensuring that the slider lock piece can be reliably rotated on the mechanism frame, and facilitating the assembly of the slider lock piece and the mechanism frame, and achieving higher assembly efficiency.
[0010] In particular, the manual-automatic switching slide is provided with a driving block that cooperates with the second micro switch, and the driving block triggers the second micro switch along with the manual-automatic switching slide to realize the connection or disconnection of the second micro switch. The manual-automatic switching slide triggers the second micro switch through the driving block, thereby ensuring that the manual-automatic switching slide can reliably trigger the second micro switch. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a three-dimensional diagram of the electric operating mechanism of the embodiment of the utility model.
[0012] Figure 2 It is an exploded view of the electric operating mechanism of the embodiment of the utility model.
[0013] Figure 3 This is a diagram of the internal structure of the electric operating mechanism of an embodiment of the utility model. DETAILED DESCRIPTION
[0014] like Figures 1 to 3As shown, the embodiment of the utility model is a locking assembly of an electric operating mechanism, including a mechanism frame 10, a safety lock 11 arranged on the mechanism frame 10, a lock wheel 12 linked with the safety lock 11, a release member 13 arranged on the mechanism frame 10, a slider lock piece 15 rotatably arranged on the mechanism frame 10 and used to lock a slider 14 and the release member 13, a tension spring 16 arranged between the slider lock piece 15 and the mechanism frame 10, a first micro switch 17 arranged on the mechanism frame 10 and matched with the lock wheel 12, a manual-automatic switching slide plate 18 slidably arranged on the mechanism frame 10, a second micro switch 19 arranged on the mechanism frame 10 and matched with the manual-automatic switching slide plate 18, a manual-automatic locking piece 20 rotatably arranged on the mechanism frame 10 and matched with the lock wheel 12, and a reset tension spring 21 arranged between the mechanism frame 10 and the manual-automatic locking piece 20, wherein the lock wheel 12 is provided with a cam portion 12 matched with the first micro switch 17 1, the cam portion 121 moves with the lock wheel 12 and triggers the first micro switch 17 to realize the connection or disconnection of the first micro switch 17, the cam portion 121 is provided with a lever portion 122 for driving the manual automatic lock plate 20 to move, the manual automatic lock plate 20 moves with the lever portion 122 and abuts against the manual automatic switching slide plate 18, and constitutes a limit fit between the manual automatic lock plate 20 and the manual automatic switching slide plate 18, and the lock wheel 12 is provided with a lever portion 122 for driving the manual automatic lock plate 20 to move. The protrusion 123 that matches the slider lock piece 15 is inserted into the toggle groove 151 of the slider lock piece 15. The protrusion 123 moves with the lock wheel 12 and reciprocates in the toggle groove 151, and constitutes the linkage cooperation between the slider lock piece 15 and the protrusion 123. The slider lock piece 15 moves with the protrusion 123 and respectively contacts the slider 14 and the release piece 13, and constitutes the limiting cooperation between the slider lock piece 15 and the slider 14 and the release piece 13. The manual automatic lock piece 20 is provided with a limiting convex block 201 that matches the manual automatic switching slide plate 18. The limiting convex block 201 moves with the manual automatic lock piece 20 and contacts the manual automatic switching slide plate 18, and constitutes the limiting cooperation between the limiting convex block 201 and the manual automatic switching slide plate 18. The manual automatic lock piece contacts the manual automatic switching slide plate through the limiting convex block, thereby ensuring the reliable locking of the manual automatic lock piece and the manual automatic switching slide plate.
[0015] like Figure 2 and 3As shown, the slider lock piece 15 has a limiting column 152 matched with the slider 14 at one end, and the slider 14 is provided with a limiting groove 141 matched with the limiting column 152. The limiting column 152 moves with the slider lock piece 15 and contacts the limiting groove 141, and forms a limiting match between the limiting column 152 and the slider 14. The slider lock piece is engaged in the limiting groove of the slider through the limiting column, so that the slider lock piece and the slider can be reliably locked. The slider lock piece 15 has a limiting piece 153 at the other end, and the release member 13 is provided with a locking piece 131 matched with the limiting piece 153. The limiting piece 153 moves with the slider lock piece 15 and contacts the locking piece 131, and forms a limiting match between the limiting piece 153 and the locking piece 131. The slider lock piece contacts the locking piece of the release member through the limiting piece, so that the slider lock piece and the release member can be reliably locked. The slider lock piece 15 has a rotating shaft 154 in the middle, and the mechanism frame 10 is provided with a positioning hole 101 matched with the rotating shaft 154, and the rotating shaft 154 is rotatably arranged in the positioning hole 101. The slider lock piece is rotatably arranged on the mechanism frame through the rotating shaft, so that it can be ensured that the slider lock piece can be reliably rotated on the mechanism frame, and it is convenient to assemble the slider lock piece and the mechanism frame, and the assembly efficiency is higher. The manual automatic switching slide plate 18 is provided with a driving block 181 matched with the second micro switch 19, and the driving block 181 automatically switches the slide plate 18 with the manual operation and triggers the second micro switch 19 to realize the connection or disconnection of the second micro switch 19. The manual automatic switching slide plate triggers the second micro switch through the driving block, so that it can be ensured that the manual automatic switching slide plate can reliably trigger the second micro switch.
[0016] The locking assembly of the electric operating mechanism adopts a multi-interlocking structural design, which effectively improves the safety performance of the locking assembly. During maintenance, the user first moves the manual automatic switch slide to the electric position, and the manual automatic switch slide blocks the manual operation hole, and the manual operation function of the electric operating mechanism is locked; the user then turns the lock core in the safety lock with the key, and the lock core drives the lock wheel to move, and the lock wheel can trigger the first micro switch, and the first micro switch cuts off the power supply of the motor of the electric operating mechanism, thereby locking the electric function of the electric operating mechanism; and the convex strip of the lock wheel drives the slider lock piece to move, and the slider lock piece can lock the release part in the release position, and the user cannot press the release part; and the slider lock piece can contact the slider, so that the slider lock piece and the slider are locked, and the user cannot manually open or close the switch, thereby preventing others from arbitrarily opening or closing the circuit breaker, which is beneficial to improving the safety performance of the locking assembly of the electric operating mechanism of the circuit breaker. Therefore, the locking assembly of the electric operating mechanism has the advantages of simple structure, stable and reliable performance, convenient operation, and high safety.
Claims
1. A locking assembly for an electric operating mechanism, characterized in that: The invention comprises a mechanism frame, a safety lock arranged on the mechanism frame, a lock wheel cooperating with the safety lock, a release member arranged on the mechanism frame, a slider lock piece rotatably arranged on the mechanism frame and used to lock the slider and the release member, a tension spring arranged between the slider lock piece and the mechanism frame, a first micro switch arranged on the mechanism frame and cooperating with the lock wheel, a manual-automatic switching slide plate slidably arranged on the mechanism frame, a second micro switch arranged on the mechanism frame and cooperating with the manual-automatic switching slide plate, a manual-automatic locking piece rotatably arranged on the mechanism frame and cooperating with the lock wheel, and a reset tension spring arranged between the mechanism frame and the manual-automatic locking piece, wherein a cam portion cooperating with the first micro switch is arranged on the lock wheel, and the cam portion moves with the movement of the cam portion. The locking wheel moves and triggers the first microswitch to achieve the connection or disconnection of the first microswitch. The cam portion is provided with a lever portion for driving the manual-automatic locking plate to move. The manual-automatic locking plate moves with the lever portion and contacts the manual-automatic switching slide, and constitutes a limit cooperation between the manual-automatic locking plate and the manual-automatic switching slide. The locking wheel is provided with a convex strip that cooperates with the slider locking plate. The convex strip is inserted in the toggle groove of the slider locking plate. The convex strip moves with the locking wheel and reciprocates in the toggle groove, and constitutes a linkage cooperation between the slider locking plate and the convex strip. The slider locking plate moves with the convex strip and contacts the slider and the release member respectively, and constitutes a limit cooperation between the slider locking plate and the slider and the release member.
2. The locking assembly of the electric operating mechanism according to claim 1, characterized in that: The manual automatic locking plate is provided with a limiting convex block matched with the manual automatic switching slide plate. The limiting convex block moves with the manual automatic locking plate and contacts the manual automatic switching slide plate, and forms a limiting match between the limiting convex block and the manual automatic switching slide plate.
3. The locking assembly of the electric operating mechanism according to claim 1 or 2, characterized in that: One end of the slider locking piece has a limiting column matched with the slider, and the slider is provided with a limiting groove matched with the limiting column. The limiting column moves with the slider locking piece and abuts in the limiting groove, and constitutes the limiting cooperation between the limiting column and the slider.
4. The locking assembly of the electric operating mechanism according to claim 1 or 2, characterized in that: The other end of the slider locking piece has a limiting piece, and the release member is provided with a locking piece that matches the limiting piece. The limiting piece moves with the slider locking piece and abuts against the locking piece, and forms a limiting match between the limiting piece and the locking piece.
5. The locking assembly of the electric operating mechanism according to claim 1 or 2, characterized in that: The middle part of the slider lock piece is provided with a rotating shaft part, the mechanism frame is provided with a positioning hole matched with the rotating shaft part, and the rotating shaft part is rotatably arranged in the positioning hole.
6. The locking assembly of the electric operating mechanism according to claim 1 or 2, characterized in that: The manual-automatic switching slide is provided with a driving block that cooperates with the second microswitch. The driving block automatically switches the slide and triggers the second microswitch to achieve the connection or disconnection of the second microswitch. The manual-automatic switching slide triggers the second microswitch through the driving block, thereby ensuring that the manual-automatic switching slide can reliably trigger the second microswitch.