Operating mechanism and circuit breaker

Abstract

The utility model belongs to the field of electric switches, and particularly relates to an operating mechanism and a circuit breaker. In order to measure the stroke of a moving contact, the utility model provides an operating mechanism. The operating mechanism comprises a connecting rod mechanism and an auxiliary switch, the connecting rod mechanism is used for being in transmission connection with the contact operating rod, the auxiliary switch is provided with an auxiliary switch rotating shaft, the connecting rod mechanism is used for enabling one end of the auxiliary switch rotating shaft to be in transmission connection with the contact operating rod, and the other end of the auxiliary switch rotating shaft is further in transmission connection with a rotary encoder. The rotary encoder is used for measuring the rotation angle of the rotating shaft of the auxiliary switch so as to indirectly measure the stroke of the moving contact, and the rotary encoder is also used for transmitting data measured by the rotary encoder to the upper computer. The utility model also provides a circuit breaker comprising the operating mechanism. As the auxiliary switch rotating shaft is in transmission connection with the connecting rod mechanism, the rotating angle of the auxiliary switch rotating shaft can reflect the movement condition of the connecting rod mechanism, namely, the stroke of the contact operating rod can be reflected, so that the stroke of the moving contact is reflected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of electric switch, especially, a kind of operating mechanism and circuit breaker. BACKGROUND

[0002] Circuit breaker is one of important components of GIS switch device, and it is mainly responsible for the breaking of current.Circuit breaker includes operating mechanism, and operating mechanism is used to drive moving contact to open and close.

[0003] The Chinese invention patent application with application publication number CN118866623A and application publication date October 29, 2024 discloses a kind of operating mechanism and circuit breaker using the operating mechanism, operating mechanism includes connecting rod mechanism, auxiliary switch, opening and closing indicator and counter, wherein, connecting rod mechanism is used to be transmission connection with contact operating lever, auxiliary switch is used to export opening and closing signal to host computer, opening and closing indicator is used to indicate the opening and closing state of circuit breaker, and counter is used to count the breaking number of circuit breaker.

[0004] Connecting rod mechanism is transmission connection with contact operating lever, auxiliary switch, opening and closing indicator and counter, and connecting rod mechanism is used to transmit the action of contact operating lever to auxiliary switch pivot, opening and closing indicator, counter and moving contact, so that contact operating lever can control auxiliary switch, opening and closing indicator and counter to switch state synchronously.

[0005] However, the above-mentioned operating mechanism cannot measure the stroke of moving contact, which is not conducive to more accurately determine the state of circuit breaker. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing an operating mechanism to solve the technical problem that the existing operating mechanism cannot measure the stroke of moving contact.

[0007] The utility model also aims at providing a circuit breaker to solve the same technical problem.

[0008] To achieve the above-mentioned purpose, the technical scheme of the operating mechanism provided by the utility model is as follows:

[0009] An operating mechanism includes a connecting rod mechanism and an auxiliary switch, the connecting rod mechanism is used to be transmission connection with a contact operating lever, the auxiliary switch has an auxiliary switch pivot, the connecting rod mechanism is used to transmission connection with one end of the auxiliary switch pivot and the contact operating lever, the other end of the auxiliary switch pivot is also transmission connection with a rotary encoder, the rotary encoder is used to measure the angle of rotation of the auxiliary switch pivot to indirectly measure the stroke of moving contact, and the rotary encoder is also used to transmit the data measured by itself to a host computer.

[0010] Furthermore, the rotary encoder and the auxiliary switch pivot are transmission connection through an elastic coupling.

[0011] Further, the auxiliary switch shaft extends in the front-rear direction, and the operating mechanism further comprises a support base arranged on one side of the circuit breaker housing, and the front-rear sides of the support base are respectively provided with a front support member and a rear support member, and the front-rear ends of the auxiliary switch are respectively fixed on the front and rear support members.

[0012] Further, the operating mechanism further comprises an opening-closing indicator, and the connecting rod mechanism comprises a contact push rod, a guide connecting rod, a rotary crank arm and an opening-closing indicator connecting rod connected in sequence, wherein the end of the contact push rod away from the guide connecting rod is arranged in transmission connection with the contact operating rod, the rotary crank arm is arranged in transmission connection with the auxiliary switch shaft, the end of the opening-closing indicator connecting rod away from the rotary crank arm is arranged in transmission connection with the opening-closing indicator, and the opening-closing indicator connecting rod is arranged in transmission connection with the rotary crank arm and the opening-closing indicator through universal shaft joints.

[0013] Further, a connecting block is further connected between the guide connecting rod and the contact push rod, and the connecting block is provided with a pin hole, and one end of the guide connecting rod is fixedly connected with the connecting block through a pin.

[0014] Further, the operating mechanism further comprises a counter, and the opening-closing indicator and the counter are arranged in transmission connection through a spring, and the spring is arranged to drive the counter to count when the opening-closing indicator switches states.

[0015] Further, the rotary encoder is a magnetic rotary encoder.

[0016] The operating mechanism has the following beneficial effects: the operating mechanism is an improved invention, and is different from the prior art in that a rotary encoder is arranged in transmission connection with the auxiliary switch shaft, and since the auxiliary switch shaft is arranged in transmission connection with the connecting rod mechanism, the angle of rotation of the auxiliary switch shaft can reflect the movement of the connecting rod mechanism, and thus the stroke of the contact operating rod arranged in transmission connection with the connecting rod mechanism, and thus the stroke of the moving contact can be reflected, the angle of rotation of the auxiliary switch shaft is measured by using the rotary encoder, the stroke of the moving contact can be conveniently measured, and thus the working state of the circuit breaker can be more accurately judged, and the stroke of the moving contact can be conveniently observed by using the upper computer by the staff.

[0017] To achieve the above object, the technical scheme of the circuit breaker provided by the utility model is as follows:

[0018] The application discloses a circuit breaker, which comprises an operating mechanism, a contact operating rod and a movable contact, the contact operating rod is in transmission connection with the movable contact, the operating mechanism comprises a connecting rod mechanism and an auxiliary switch, the connecting rod mechanism is used for being in transmission connection with the contact operating rod, the auxiliary switch has an auxiliary switch rotating shaft, the connecting rod mechanism is used for being in transmission connection between one end of the auxiliary switch rotating shaft and the contact operating rod, the other end of the auxiliary switch rotating shaft is further in transmission connection with a rotary encoder, the rotary encoder is used for measuring the angle of rotation of the auxiliary switch rotating shaft, so as to indirectly measure the stroke of the movable contact, and the rotary encoder is further used for transmitting the measured data to an upper computer.

[0019] Further, the rotary encoder is in transmission connection with the auxiliary switch rotating shaft through an elastic coupling.

[0020] Further, the auxiliary switch rotating shaft extends in the front-back direction, the operating mechanism further comprises a supporting seat arranged on one side of a circuit breaker shell, the supporting seat is provided with a front supporting part and a rear supporting part on the front side and the rear side respectively, and the front end and the rear end of the auxiliary switch are fixed on the front supporting part and the rear supporting part respectively.

[0021] Further, the operating mechanism further comprises a switching indicator, the connecting rod mechanism comprises a contact push rod, a guide connecting rod, a rotary crank arm and a switching indicator connecting rod which are sequentially connected, the contact push rod is in transmission connection with the contact operating rod at the end far away from the guide connecting rod, the rotary crank arm is in transmission connection with the auxiliary switch rotating shaft, the switching indicator connecting rod is in transmission connection with the switching indicator at the end far away from the rotary crank arm, and the switching indicator connecting rod is in transmission connection with the rotary crank arm and the switching indicator through universal couplings.

[0022] Further, the guide connecting rod and the contact push rod are further connected with a connecting block, the connecting block is provided with a pin hole, and the end of the guide connecting rod is fixedly connected with the connecting block through a pin.

[0023] Further, the operating mechanism further comprises a counter, the switching indicator and the counter are in transmission connection through a spring, and the spring is used for driving the counter to count when the switching indicator switches states.

[0024] Further, the rotary encoder is a magnetic rotary encoder.

[0025] The utility model discloses the beneficial effect of circuit breaker is: the utility model discloses the improved invention creation. The utility model discloses the difference with prior art is: the rotation encoder is drivenly connected on the auxiliary switch pivot, because auxiliary switch pivot and connecting rod mechanism transmission connection, so the angle of auxiliary switch pivot rotation can reflect the motion of connecting rod mechanism, also can reflect the stroke of the contact operating rod of connecting rod mechanism transmission connection, to reflect the stroke of moving contact. The rotation encoder is utilized to measure the angle of auxiliary switch pivot rotation, can conveniently measure the stroke of moving contact, also can more accurately judge the working condition of circuit breaker, and the staff can conveniently observe the stroke of moving contact with host computer. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the front view schematic diagram of the utility model operating mechanism when circuit breaker is in the closing state.

[0027] Figure 2 It is the structure schematic diagram of the utility model operating mechanism when circuit breaker is in the closing state.

[0028] Figure 3 It is the structure schematic diagram of the utility model operating mechanism in the opening and closing indicator, spring and counter.

[0029] Figure 4 It is the front view schematic diagram of the utility model operating mechanism when circuit breaker is in the opening state.

[0030] BRIEF DESCRIPTION OF DRAWINGS:

[0031] 1, support seat, 2, front support plate, 3, contact push rod, 4, connecting block, 5, bolt, 6, guide connecting rod, 7, rotary crank, 8, auxiliary switch, 9, auxiliary switch pivot, 10, opening and closing indicator connecting rod, 11, opening and closing indicator, 12, spring, 13, counter, 14, mounting frame, 15, contact operating rod, 16, elastic coupling, 17, magnetic rotary encoder, 18, rear support frame, 19, guide slot. DETAILED DESCRIPTION

[0032] To solve the problems in the background art, the core inventive concept of the utility model is: the stroke of moving contact is indirectly measured by detecting the angle of auxiliary switch pivot rotation.

[0033] The utility model will be further described in detail in combination with embodiments.

[0034] The specific embodiment of the operating mechanism provided by the utility model:

[0035] As Figures 1-4As shown, as a basic embodiment, the operating mechanism includes a linkage mechanism for driving connection with the contact operating rod 15 and an auxiliary switch 8 having an auxiliary switch rotating shaft 9, one end of the auxiliary switch rotating shaft 9 being drivingly connected with the contact operating rod 15, and the other end of the auxiliary switch rotating shaft 9 being further drivingly connected with a rotary encoder for measuring the angle of rotation of the auxiliary switch rotating shaft 9 to indirectly measure the travel of the movable contact, and the rotary encoder is further used to transmit the data measured by itself to the upper computer.

[0036] The upper computer can be a mobile phone, a tablet, a computer or other structures with display function. It should be specially pointed out that the upper computer can be a component of the circuit breaker, for example, the upper computer is a display structure mounted on the housing of the circuit breaker, and the display structure includes a display and a processor, and the worker can observe the travel of the movable contact through the display.

[0037] Preferably, the rotary encoder is a magnetic rotary encoder 17, which is simple and reliable in structure.

[0038] However, in other embodiments, the rotary encoder can also be a mechanical rotary encoder or other rotary encoders.

[0039] Preferably, the rotary encoder is drivingly connected with the auxiliary switch rotating shaft 9 through an elastic coupling 16, so as to compensate for the installation error and make the measurement result more accurate. At the same time, the elastic coupling 16 can also buffer the vibration generated during the opening and closing of the circuit breaker, so as to make the measurement result more accurate.

[0040] However, in other embodiments, the rotary encoder can also be directly fixedly connected with the auxiliary switch rotating shaft 9, in which case, the installation precision of the position of the rotary encoder and the position of the auxiliary switch 8 is required to be higher.

[0041] In the above basic embodiment, the operating mechanism has the auxiliary switch 8 and the rotary encoder, and in use, the worker can observe the travel of the movable contact and the opening and closing state by using the upper computer, that is, the working state of the circuit breaker can be remotely monitored. At this time, the operating mechanism has the auxiliary switch 8 contact point signal output function, the movable contact travel measurement function and the contact travel signal transmission function.

[0042] In the basic embodiment, the linkage mechanism includes the contact push rod 3, the guide linkage 6 and the rotary crank arm 7 connected in sequence, one end of the contact push rod 3 away from the guide linkage 6 being drivingly connected with the contact operating rod 15, and the rotary crank arm 7 being drivingly connected with the auxiliary switch rotating shaft 9.

[0043] In the utility model, the rotation encoder is drivenly connected to the auxiliary switch rotating shaft 9, the auxiliary switch rotating shaft 9 is drivingly connected with the connecting rod mechanism, so the angle of rotation of the auxiliary switch rotating shaft 9 can reflect the movement of the connecting rod mechanism, and the stroke of the contact operating rod 15 drivingly connected with the connecting rod mechanism can be reflected, thereby the stroke of the moving contact can be reflected.The rotation encoder is used to measure the angle of rotation of the auxiliary switch rotating shaft 9, the stroke of the moving contact can be conveniently measured, and the working state of the circuit breaker can be more accurately judged, and the stroke of the moving contact can be conveniently observed by the staff using the upper computer.

[0044] In the preferable embodiment, the operating mechanism further comprises a switching indicator 11, the connecting rod mechanism comprises a contact push rod 3, a guide connecting rod 6, a rotary crank arm 7 and a switching indicator connecting rod 10 connected in sequence, one end of the switching indicator connecting rod 10 away from the rotary crank arm 7 is used for drivingly connecting with the switching indicator 11, and the switching indicator connecting rod 10 is drivingly connected with the rotary crank arm 7 and the switching indicator 11 through universal joints, so that the assembly error can be effectively eliminated.

[0045] At this time, the staff can judge the switching state of the circuit breaker by directly observing the switching indicator 11 on site.

[0046] In the more preferable embodiment, the operating mechanism further comprises a counter 13, the switching indicator 11 and the counter 13 are drivingly connected through a spring 12, and the spring 12 is used for driving the counter 13 to count when the switching indicator 11 switches state. The spring 12 is used for driving the lever of the counter 13 to move, so that the switching counting function can be realized. The spring 12 can buffer the vibration generated when the switching indicator 11 moves, so that the counter 13 is prevented from being damaged, and the counter 13 is also installed on the mounting frame 14.

[0047] In use, the staff can know the number of times of switching of the circuit breaker by observing the counter 13, so that the state of the circuit breaker can be better judged.

[0048] In order to make the structure more stable, the utility model makes the following improvements to the fixing form of the auxiliary switch 8:

[0049] In the preferable embodiment, the auxiliary switch rotating shaft 9 extends along the front-back direction, the operating mechanism further comprises a support base 1 used for being installed on one side of the circuit breaker shell, the front-back two sides of the support base 1 are respectively provided with a front support part and a rear support part, and the front-rear two ends of the auxiliary switch 8 are respectively fixed on the front and rear support parts, so that the structure is stable.

[0050] Wherein, the front support member is preferably a front support plate 2, the front support plate 2 is provided with a guide groove 19 for providing guidance for the contact push rod 3, and the rear support member is preferably a rear support frame 18, the rear support frame 18 is provided with an avoiding hole for avoiding the elastic coupling 16 (or the auxiliary switch rotating shaft 9). Of course, the front support member can also be a support frame or the like structure, the rear support member can also be a support plate or the like structure, and the rear support member can also be provided with no avoiding hole, in which case, the highest part of the rear support member is lower than the elastic coupling 16 (or the auxiliary switch rotating shaft 9) so as to avoid interference between the rear support member and the elastic coupling 16 (or the auxiliary switch rotating shaft 9). In the utility model, the specific structure of the front support member and the rear support member is not limited, as long as the front support member is provided with the guide groove 19 and the front support member and the rear support member are respectively used for supporting the auxiliary switch 8.

[0051] However, in other specific embodiments, the rear support frame 18 can not be provided, and only the front end of the auxiliary switch 8 is fixed on the front support member.

[0052] In order to eliminate installation errors, in the utility model, the following improvements are made to the connecting rod mechanism:

[0053] In a more preferred specific embodiment, the guide connecting rod 6 and the contact push rod 3 are further connected with a connecting block 4, the connecting block 4 is provided with a pin hole, one end of the guide connecting rod 6 is fixedly connected with the connecting block 4 through a pin 5, so as to be able to fine-tune the relative position of the guide connecting rod 6 and the contact push rod 3 in the front-rear direction, thereby eliminating installation errors.

[0054] However, in other specific embodiments, the guide connecting rod 6 and the contact push rod 3 can be directly drivingly connected, in which case, the installation precision of the wire connecting rod position and the contact push rod 3 position is required to be higher.

[0055] As shown in FIG. Figures 1-4 When the circuit breaker is switched from the closed state to the open state (or the circuit breaker is switched from the open state to the closed state), the transmission path of the action is:

[0056] (1) the contact operating rod 15 → the contact push rod 3 → the guide connecting rod 6 → the rotating elbow 7 → the opening-closing indicator connecting rod 10 → the opening-closing indicator 11 → the spring 12 → the counter 13;

[0057] (2) the contact operating rod 15 → the contact push rod 3 → the guide connecting rod 6 → the rotating elbow 7 → the auxiliary switch rotating shaft 9 → the elastic coupling 16 → the rotary encoder.

[0058] The specific embodiments of the circuit breaker provided by the utility model:

[0059] The circuit breaker comprises an operating mechanism, a contact operating rod 15 and a movable contact, the contact operating rod 15 is in transmission connection with the movable contact, and the contact operating rod 15 is used for driving the movable contact to move to open the circuit breaker; the specific structure of the operating mechanism is the same as that of any one of the operating mechanisms in the specific embodiments of the operating mechanism of the utility model, and thus will not be repeated here.

[0060] Finally, it needs to be explained that the above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments without paying the creative labor, or make equivalent replacement to part of the technical features, so as to combine the specific embodiments given in the Figures 1-4 of course, the person skilled in the art can also combine the specific embodiments not given in the remaining description drawings. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An operating mechanism, comprising a linkage mechanism and an auxiliary switch, wherein the linkage mechanism is used for a driving connection with a contact operating rod, the auxiliary switch has an auxiliary switch shaft, and the linkage mechanism is used for a driving connection between one end of the auxiliary switch shaft and the contact operating rod, characterized in that, The other end of the auxiliary switch rotating shaft is also transmissionally connected with a rotary encoder, which is used for measuring the angle of rotation of the auxiliary switch rotating shaft to indirectly measure the stroke of the movable contact, and is also used for transmitting the measured data to an upper computer.

2. The operating mechanism according to claim 1, characterized in that The rotary encoder is transmissionally connected with the auxiliary switch rotating shaft through an elastic coupling.

3. The operating mechanism according to claim 1, wherein The auxiliary switch rotating shaft extends in the front-rear direction, and the operating mechanism further comprises a support seat for being mounted on one side of the circuit breaker housing, the support seat is provided with a front support member and a rear support member on the front and rear sides respectively, and the front and rear ends of the auxiliary switch are fixed on the front and rear support members respectively.

4. An actuator according to any one of claims 1 to 3, wherein The operating mechanism further comprises an opening-closing indicator, and the connecting rod mechanism comprises a contact push rod, a guide connecting rod, a rotary crank arm and an opening-closing indicator connecting rod connected in sequence, wherein the end of the contact push rod away from the guide connecting rod is used for transmissionally connecting with the contact operating rod, the rotary crank arm is transmissionally connected with the auxiliary switch rotating shaft, the end of the opening-closing indicator connecting rod away from the rotary crank arm is used for transmissionally connecting with the opening-closing indicator, and the opening-closing indicator connecting rod is transmissionally connected with the rotary crank arm and the opening-closing indicator through universal couplings.

5. The actuator of claim 4 wherein the cam is a cam plate. The guide connecting rod and the contact push rod are further connected with a connecting block, the connecting block is provided with a pin hole, and the end of the guide connecting rod is fixedly connected with the connecting block through a pin.

6. The operating mechanism according to claim 4, wherein The operating mechanism further comprises a counter, and the opening-closing indicator and the counter are transmissionally connected through a spring, which is used for driving the counter to count when the opening-closing indicator switches states.

7. An actuator according to any one of claims 1 to 3, wherein The rotary encoder is a magnetic rotary encoder.

8. A circuit breaker comprising an operating mechanism, a contact operating lever and a movable contact, the contact operating lever being in driving connection with the movable contact, characterized in that The operating mechanism is the operating mechanism according to any one of claims 1-7.

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