CN214797305U - Clutch structure of electric operating mechanism for circuit breaker - Google Patents
Clutch structure of electric operating mechanism for circuit breaker Download PDFInfo
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- CN214797305U CN214797305U CN202120528247.6U CN202120528247U CN214797305U CN 214797305 U CN214797305 U CN 214797305U CN 202120528247 U CN202120528247 U CN 202120528247U CN 214797305 U CN214797305 U CN 214797305U
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- star wheel
- gear
- stop pin
- push rod
- circuit breaker
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Abstract
The utility model provides a clutch structure of an electric operating mechanism for a circuit breaker, which comprises a gear, a star wheel, push rods and a top plate, wherein the star wheel is coaxially arranged in a central hole of the gear, and the push rods which can do reciprocating motion along the radial direction of the star wheel are sleeved on two sides of the star wheel; a spring is arranged in the star wheel, the other end of the spring is telescopically provided with a stop pin, and two ends of the stop pin are fixedly arranged with the push rod; the outer edge of the central hole is annularly provided with a plurality of rabbets matched with the stop pin, and the stop pin can be switched between the central hole and the rabbets; the top plate is arranged outside the gear and is fixed in position. The utility model discloses simple structure does not occupy the exterior space, and the action uniformity is good, is fit for batch production more, realizes the separation and reunion under the prerequisite that does not increase axial and radial dimension, and the cost of manufacture is low.
Description
Technical Field
The utility model relates to a circuit breaker accessory, especially an electric operating mechanism's clutch structure for circuit breaker.
Background
The circuit breaker is a key element in the processes of power grid output, power transformation and power distribution; when the circuit breaker works, the circuit can be opened and closed through manual operation or electric operation; the electric operating mechanism is a core component for realizing the operation of the circuit breaker.
The circuit breaker has the advantages that the circuit breaker is generally high in operating force, and an independent motor is difficult to realize the function of electric operation, so that the electric operating mechanism generally consists of the motor and a speed reducing mechanism, and the circuit breaker with the electric operating mechanism can realize the electric and manual functions; for example, in manual operation, the resistance of the speed reduction mechanism needs to be overcome in addition to the elastic force of the breaker mechanism itself; during electric operation, electric operating mechanism drive circuit breaker work, and the motor outage when the circuit breaker main shaft rotates to the particular position, motor and reduction gears can not stall immediately under inertia, will cause certain impact to the circuit breaker to probably cause certain influence to the performance and the mechanical life of circuit breaker.
In order to solve the problems, a clutch structure is added in a speed reducing mechanism on the basis of an electric operating mechanism, the conventional clutch structure is large in size, needs to occupy a large space, is complex in structure, has more transmission relations among parts and causes poor action accuracy.
Disclosure of Invention
To exist not enough among the prior art, the utility model provides a clutch structure of electric operating mechanism for circuit breaker reaches the separation and reunion effect under the condition that does not change external dimension, simple structure and the action is accurate, and each part is connected the uniformity and is good, and the cost of manufacture is low. The utility model adopts the technical proposal that:
a clutch structure of an electric operating mechanism for a circuit breaker comprises a gear, a star wheel, push rods and a top plate, wherein the star wheel is coaxially arranged in a central hole of the gear, and the push rods capable of doing reciprocating motion along the radial direction of the star wheel are sleeved on two sides of the star wheel;
a spring is arranged in the star wheel, the other end of the spring is telescopically provided with a stop pin, and two ends of the stop pin are fixedly arranged with the push rod;
the outer edge of the central hole is annularly provided with a plurality of rabbets matched with the stop pin, and the stop pin can be switched between the central hole and the rabbets;
the top plate is arranged outside the gear and is fixed in position, and under the free state of the spring, the distance between the farthest end of the side face of the push rod close to the top plate and the axis of the star wheel is greater than the minimum distance between the top plate and the axis of the star wheel, and the distance between the two ends of the side face of the push rod close to the top plate and the axis of the star wheel is smaller than the minimum distance between the top plate and the axis of the star wheel.
Furthermore, a pin hole is arranged on the push rod, and the stop pin is fixed in the pin hole.
Furthermore, two step surfaces are symmetrically arranged on the outer peripheral surface of the star wheel, a long circular hole is machined in the push rod, the push rod is sleeved on the star wheel through the long circular hole, and the step surfaces are parallel to the inner wall of the long circular hole.
Further, one end of the push rod far away from the star wheel is configured to be an asymmetric arc edge.
Furthermore, a groove is formed in the outer peripheral surface of the star wheel, and the spring is elastically arranged in the groove.
Further, when the stop pin is pressed into the stop opening by the spring, the gear rotates clockwise to drive the star wheel to rotate.
The utility model has the advantages that: utilize the inside spring of star gear and the tang on the stop pin cooperation gear to drive the push rod and do the reciprocating motion for the main shaft step face to reach the separation and reunion effect, realize the separation and reunion under the prerequisite that does not increase axial and radial dimension, do not change the external dimension, not only small, the action is accurate reliable, and the structural consistency is good moreover, is fit for batch production more, reduces the cost of manufacture.
Drawings
Fig. 1 is an assembly view of the present invention.
Fig. 2 is a structural diagram of the present invention.
Fig. 3 is a structural diagram of the present invention with one side of the frame removed.
Fig. 4 is a structural diagram of the present invention without a side frame and a push rod.
Fig. 5 is a top view of the present invention.
In the figure: 1-gear, 2-star wheel, 3-main shaft, 4-groove, 5-frame, 6-stop pin, 7-push rod, 8-top plate, 9-spring, 10-spigot, 101-center hole, 301-step surface, 501-positioning hole, 701-long hole, 702-pin hole and 703-arc edge.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1-5, the present invention provides a clutch structure of an electric operating mechanism for a circuit breaker, the whole structure is assembled in a frame 5, and includes a gear 1, a star wheel 2, a push rod 7 and a top plate 8, the star wheel 2 is coaxially disposed in a central hole 101 of the gear 1, a spindle 3 is fixed on the star wheel 2 in a penetrating manner, and when the star wheel 2 rotates, the spindle 3 is driven to rotate; push rods 7 capable of doing reciprocating motion along the radial direction of the star wheel 2 are sleeved on the two sides of the star wheel 2; a positioning hole 501 for inserting the spindle 3 is formed in the frame 5, and the spindle 3 penetrates through the positioning hole 501;
a spring 9 is arranged in the star wheel 2, the other end of the spring 9 is telescopically provided with a stop pin 6, and two ends of the stop pin 6 are fixedly arranged with a push rod 7; specifically, the spring 9 is fixed on the side surface of the stop pin 6, and two push rods 7 are respectively fixed at two ends of the stop pin 6; a groove 4 is formed in the outer peripheral surface of the star wheel 2, and the spring 9 is elastically arranged in the groove 4; the groove 4 is used for hiding the spring 9, namely the space outside the star wheel 2 is not occupied; the stop pin 6 is parallel to the axis of the star wheel 2 and is positioned in the groove 4 of the star wheel 2;
specifically, a pin hole 702 is arranged on the push rod 7, and the stop pin 6 is fixed in the pin hole 702; the stop pin 6 drives the two push rods 7 at the two ends to synchronously move while moving; two step surfaces 301 are symmetrically arranged on the outer peripheral surface of the star wheel 2, a long circular hole 701 is machined in the push rod 7, the push rod 7 is sleeved on the star wheel 2 through the long circular hole 701, and the step surfaces 301 are parallel to the inner wall of the long circular hole 701; in the process that the stop pin 6 drives the push rod 7 to move, the main shaft 3 slides in the long circular hole 701 relative to the push rod 7, and the step surface 301 is in sliding fit with the inner wall of the long circular hole 701.
A plurality of spigots 10 matched with the stop pin 6 are annularly arranged on the outer edge of the central hole 101, and the stop pin 6 can be switched between the central hole 101 and the spigots 10; in practice, both ends of the seam allowance 10 are asymmetric surfaces, when the stop pin 6 is pressed into the seam allowance 10 by the spring 9, the stop pin 6 cannot slide out of the seam allowance 10, and then the gear 1 rotates clockwise to drive the star wheel 2 to rotate.
The top plate 8 is arranged outside the gear 1 and fixed on the frame 5, and one end of the push rod 7 far away from the star wheel 2 is arranged as an asymmetric arc edge 703; under the free state of the spring 9, the distance between the farthest end of the side surface of the push rod 7 close to the top plate 8 and the axis of the star wheel 2 is greater than the minimum distance between the top plate 8 and the axis of the star wheel 2, and the distance between the two ends of the side surface of the push rod 7 close to the top plate 8 and the axis of the star wheel 2 is smaller than the minimum distance between the top plate 8 and the axis of the star wheel 2.
The working principle is as follows:
before the electric operating mechanism starts to work, the stop pin 6 is in contact with the inner wall of the central hole 101 of the gear 1 under the action of the thrust of the spring 9, after the gear 1 rotates clockwise, the stop pin 6 enters the spigot 10 under the thrust of the spring 9, at the moment, the spigot 10 clamps the stop pin 6, and the gear 1 pushes the star wheel 2 to rotate;
when the electric operating mechanism drives the spindle 3 to a specific position, the spindle 3 starts to actively and rapidly rotate clockwise, so that the star wheel 2 rotates, the star wheel 2 drives the stop pin 6 to do smooth motion in the central hole 101 and the spigot 10 in the gear 1, and meanwhile, the push rod 7 rotates clockwise under the action of the stop pin 6;
when the push rod 7 rotates to a specific position, the arc edge 703 at the top end of the push rod 7 is contacted with the top plate 8, and moves towards the star wheel 2 along the central connection line of the stop pin 6 and the star wheel 2 under the reaction force of the top plate 8, and the spring 9 is compressed at the moment until the stop pin 6 is separated from the spigot 10 and enters the groove 4;
when the main shaft 3 rotates to a specific position and stops rotating, the push rod 7 is always in contact with the top plate 8, the stop pin 6 is in the groove 4 of the star wheel 2, the radial direction does not exceed the maximum excircle of the star wheel 2, the star wheel 2 and the main shaft 3 are both in a static state, the gear 1 and the star wheel 2 do not synchronously rotate any more, and the separation function is realized; when star wheel 2 and main shaft 3 are in the quiescent condition, if electric operating mechanism is in the outage state, can manual clockwise rotation main shaft 3, carry out manual operation.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a circuit breaker is with electric operating mechanism's separation and reunion structure, includes gear (1), star gear (2), push rod (7) and roof (8), its characterized in that: the star wheel (2) is coaxially arranged in a center hole (101) of the gear (1), and push rods (7) capable of doing reciprocating motion along the radial direction of the star wheel (2) are sleeved on two sides of the star wheel (2);
a spring (9) is arranged in the star wheel (2), the other end of the spring (9) is telescopically provided with a stop pin (6), and two ends of the stop pin (6) are fixedly arranged with a push rod (7);
the outer edge of the central hole (101) is annularly provided with a plurality of spigots (10) matched with the stop pin (6), and the stop pin (6) can be switched between the central hole (101) and the spigots (10);
roof (8) configuration is in gear (1) outside and rigidity under spring (9) free state, the distance that side furthest and star gear (2) axle center that push rod (7) are close to roof (8) is greater than the minimum distance in roof (8) and star gear (2) axle center, the distance that push rod (7) are close to side both ends and star gear (2) axle center of roof (8) are less than the minimum distance in roof (8) and star gear (2) axle center.
2. The clutch structure of an electric operating mechanism for a circuit breaker according to claim 1, wherein: the push rod (7) is provided with a pin hole (702), and the stop pin (6) is fixed in the pin hole (702).
3. The clutch structure of an electric operating mechanism for a circuit breaker according to claim 1, wherein: two step surfaces (301) are symmetrically arranged on the outer peripheral surface of the star wheel (2), a long circular hole (701) is machined in the push rod (7), the push rod (7) is sleeved on the star wheel (2) through the long circular hole (701), and the step surfaces (301) are parallel to the inner wall of the long circular hole (701).
4. The clutch structure of an electric operating mechanism for a circuit breaker according to claim 1, wherein: one end of the push rod (7) far away from the star wheel (2) is configured into an asymmetric arc edge (703).
5. The clutch structure of an electric operating mechanism for a circuit breaker according to claim 1, wherein: a groove (4) is formed in the outer peripheral surface of the star wheel (2), and the spring (9) is elastically arranged in the groove (4).
6. The clutch structure of an electric operating mechanism for a circuit breaker according to claim 1, wherein: when the stop pin (6) is pressed into the spigot (10) by the spring (9), the gear (1) rotates clockwise to drive the star wheel (2) to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120528247.6U CN214797305U (en) | 2021-03-12 | 2021-03-12 | Clutch structure of electric operating mechanism for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120528247.6U CN214797305U (en) | 2021-03-12 | 2021-03-12 | Clutch structure of electric operating mechanism for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214797305U true CN214797305U (en) | 2021-11-19 |
Family
ID=78665250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120528247.6U Active CN214797305U (en) | 2021-03-12 | 2021-03-12 | Clutch structure of electric operating mechanism for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214797305U (en) |
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2021
- 2021-03-12 CN CN202120528247.6U patent/CN214797305U/en active Active
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