Molded case circuit breaker electric operating device

Abstract

The utility model relates to an electric operating device for a molded case circuit breaker, which comprises a molded case circuit breaker fixedly arranged on a bottom plate and a handle sleeve arranged on a circuit breaker handle, and the upper end and the lower end of the handle sleeve are respectively connected with a first action armature and a second action armature. The first action armature and the second action armature are respectively attracted through energization of the closing coil and the opening coil, the handle sleeve and the handle are driven to act, and closing and opening of the circuit breaker are achieved. In addition, limiting rods are fixedly installed at the left end and the right end of the handle sleeve and used for triggering corresponding limiting switches and disconnecting a coil power supply loop when opening and closing actions are in place. The molded case circuit breaker is made of polyester resin or epoxy resin and has good insulation performance and heat resistance. A traditional gear transmission mechanism is omitted, the structure of the device is simplified, and the reliability of the device is improved. The device is simple in structure, low in height, small in size and suitable for application scenes with small space and high reliability requirements on the motor train unit.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit electrical equipment field especially, relates to a moulded case circuit breaker electric operating device. BACKGROUND

[0002] In the field of rail transit electrical technology, especially on the motor train unit, some application occasions need to use the moulded case circuit breaker with electric operating device to complete the remote opening and closing action. This is because the motor train unit needs to accurately control its electrical system during operation, and the reliability and convenience of the opening and closing operation of the moulded case circuit breaker as an important component in the electrical system are directly related to the operation safety of the motor train unit.

[0003] The current moulded case circuit breaker electric operating device usually adopts a gear transmission structure. This structure transmits power through the meshing of gears to realize the opening and closing operation of the circuit breaker. These electric operating devices are usually large in size and high in height to adapt to the complex gear transmission mechanism inside.

[0004] However, in the narrow space environment of the motor train unit electrical cabinet, the existing electric operating device with large size and high height is not suitable for the narrow space environment of the motor train unit electrical cabinet. Moreover, the current electric operating mechanism usually adopts a gear transmission structure, which is complex in internal structure and difficult to meet the high reliability requirement of the motor train unit. SUMMARY

[0005] Therefore, it is necessary to provide a moulded case circuit breaker electric operating device to solve the above-mentioned defects of the prior art.

[0006] In order to solve the above-mentioned problems, the utility model provides a moulded case circuit breaker electric operating device, which comprises:

[0007] The moulded case circuit breaker is fixedly installed on the bottom plate.

[0008] The bottom plate is used to bear each component of the electric operating device.

[0009] The handle sleeve is installed on the handle of the moulded case circuit breaker, and the upper and lower ends of the handle sleeve are connected with the first action armature and the second action armature respectively.

[0010] The closing coil is connected with the handle sleeve through the first action armature, and is used to generate suction force to attract the first action armature when the closing coil is powered, so as to drive the handle sleeve and the handle to act and complete the closing of the moulded case circuit breaker.

[0011] The opening coil is connected with the handle sleeve through the second action armature, and is used to generate suction force to attract the second action armature when the opening coil is powered, so as to drive the handle sleeve and the handle to act and complete the opening of the moulded case circuit breaker.

[0012] Preferably, the plastic shell circuit breaker electric operating device further comprises:

[0013] A limiting rod is fixedly installed at the left and right ends of the handle sleeve, and is used to drive the contact of the closing limit switch to act when the opening and closing actions of the handle are in place;

[0014] A closing limit switch is fixedly installed on the bottom plate, and the closing limit switch is installed at the position of the limiting rod when the closing is in place; after the plastic shell circuit breaker is closed in place, the limiting rod triggers the action to break the power supply circuit of the closing coil;

[0015] An opening limit switch is fixedly installed on the bottom plate, and the opening limit switch is installed at the position of the limiting rod when the opening is in place; after the plastic shell circuit breaker is opened in place, the limiting rod triggers the action to break the power supply circuit of the opening coil.

[0016] Preferably, the plastic shell circuit breaker is composed of polyester resin or epoxy resin.

[0017] Compared with the prior art, the plastic shell circuit breaker electric operating device has the following advantages

[0018] Beneficial effects:

[0019] The utility model discloses a plastic shell circuit breaker electric operating device, compared with prior art, has the following BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The utility model provides a plastic shell circuit breaker electric operating device's structure schematic view for embodiment of the utility model;

[0021] Figure 2 The utility model provides a plastic shell circuit breaker electric operating device's main view for embodiment of the utility model;

[0022] In the drawing, 1: plastic shell circuit breaker;2: bottom plate;3: handle sleeve;4: closing coil;5: opening coil;6: closing limit switch;7: opening limit switch;81: first action armature;82: second action armature;9: limiting rod. DETAILED DESCRIPTION

[0023] The preferred embodiments of the utility model will be specifically described below in combination with the drawings, wherein the drawings constitute a part of the present application, and are used together with the embodiments of the utility model to explain the principles of the utility model, and are not used to limit the scope of the utility model.

[0024] Reference to "an embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all referring to a common set of embodiments, although they can. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments described herein. It is, therefore, to be understood that the application can be practiced with modification and alteration, and that the application should not be limited to the details at hand with regard to the particular embodiments.

[0025] The current molded case circuit breaker electric operating device usually adopts a gear transmission structure. The gear transmission structure transmits power through the meshing of gears to realize the opening and closing operation of the circuit breaker. These electric operating devices are often large in size and high in height to adapt to the complex gear transmission mechanism inside. However, in the narrow space environment of the electric cabinet of the motor train unit, the existing electric operating device with large size and high height is not suitable for the narrow space environment of the electric cabinet of the motor train unit. Moreover, the current electric operating mechanism usually adopts a gear transmission structure, which is complex in internal structure and difficult to adapt to the high reliability requirement of the motor train unit.

[0026] Therefore, the utility model designs a molded case circuit breaker electric operating device suitable for the motor train unit, which is high in reliability, low in height and small in size. The following will be described and introduced through multiple embodiments.

[0027] Figure 1 The structure diagram of the molded case circuit breaker electric operating device provided by the utility model embodiment is shown in Figure 1 The molded case circuit breaker electric operating device comprises:

[0028] The molded case circuit breaker 1 is fixedly installed on the bottom plate 2. The molded case circuit breaker 1 can be composed of polyester resin or epoxy resin. The polyester resin and the epoxy resin can provide good mechanical properties, good insulation properties and corrosion resistance, thereby improving the reliability and service life of the circuit breaker.

[0029] The bottom plate 2 is used for bearing various components of the electric operating device.

[0030] The handle sleeve 3 is installed on the handle of the molded case circuit breaker, and the upper and lower ends of the handle sleeve are connected with the first action armature 81 and the second action armature 82 respectively.

[0031] The closing coil 4 is connected with the handle sleeve through the first action armature 81 and is used for generating suction force to attract the first action armature 81 when the closing coil is powered, thereby driving the handle sleeve 3 and the handle to act and completing the closing of the molded case circuit breaker 1.

[0032] The opening coil 5 is connected with the handle sleeve through the second action armature 82 and is used for generating suction force to attract the second action armature 82 when the opening coil is powered, thereby driving the handle sleeve 3 and the handle to act and completing the opening of the molded case circuit breaker 1.

[0033] Specifically, referring to Figure 1 The molded case circuit breaker 1 is responsible for the on-off operation of the electrical system. The base plate 2 serves as a support structure of the electric operating device of the molded case circuit breaker, and is used to bear various components of the electric operating device, and ensures the stability of the device. The handle sleeve 3 is connected to the handle of the molded case circuit breaker and the operating armature of the on-off coil. The handle sleeve 3 is attracted and driven to operate the handle to realize the on or off of the circuit breaker by the suction force generated by the energization of the coil. The on-off of the corresponding operating armature is controlled by the energization and de-energization of the on-coil 4 and the off-coil 5, so as to drive the handle sleeve 3 and the handle of the molded case circuit breaker to operate, thereby realizing the on and off of the molded case circuit breaker.

[0034] The utility model discloses a direct on-line coil and handle sleeve between setting operating armature, realized the on-off operation of circuit breaker, has eliminated the gear transmission mechanism, the structure of simple reduction has reduced the trouble point, improved the reliability of device. Compared with the complex gear transmission structure of traditional scheme, the utility model discloses simple structure, height is low, and the volume is small, and the reliability is high. It is applicable to the application scene of high reliability requirement in the smaller space of motor train unit.

[0035] In one preferred embodiment of the utility model, the molded case circuit breaker electric operating device further comprises:

[0036] The limiting rod 9 is fixedly installed at the left and right ends of the handle sleeve, and is used to drive the contact of the on-off limit switch to operate when the on-off operation of the handle is in place;

[0037] The on-limit switch 6 is fixedly installed on the base plate 2, and the on-limit switch is installed at the position of the limiting rod 9 when the on is in place; after the molded case circuit breaker is on in place, the limiting rod 9 triggers the action to disconnect the power supply circuit of the on-coil;

[0038] The off-limit switch 7 is fixedly installed on the base plate 2, and the off-limit switch is installed at the position of the limiting rod 9 when the off is in place; after the molded case circuit breaker is off in place, the limiting rod 9 triggers the action to disconnect the power supply circuit of the off-coil.

[0039] In the embodiment, through the control of the limit switch, it can be ensured that the circuit breaker will not be damaged due to the continuous energization of the coil during the on-off process.

[0040] In actual operation, when the closing operation is needed, the closing coil 4 is energized, and the closing coil 4 generates suction after being energized, and the first action armature 81 is attracted. After the first action armature 81 is attracted, the handle sleeve 3 and the handle of the plastic shell circuit breaker are driven to act together, so that the plastic shell circuit breaker 1 is closed. After the closing is in place, the limiting rod 9 on the handle sleeve 3 triggers the closing limit switch 6, so that the contact of the closing limit switch 6 is actuated. After the closing limit switch 6 is actuated, the power supply circuit of the closing coil 4 is disconnected, the closing coil 4 stops working, and the first action armature 81 also returns to the free state.

[0041] When the opening operation is needed, the opening coil 5 is energized. The opening coil 5 generates suction after being energized, and the second action armature 82 is attracted. After the second action armature 82 is attracted, the handle sleeve 3 and the handle of the plastic shell circuit breaker are driven to act together, so that the plastic shell circuit breaker 1 is opened. After the opening is in place, the limiting rod 9 on the handle sleeve 3 triggers the opening limit switch 7, so that the contact of the opening limit switch 7 is actuated. After the opening limit switch 7 is actuated, the power supply circuit of the opening coil 5 is disconnected, the opening coil 5 stops working, and the second action armature 82 also returns to the free state.

[0042] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, so that a process, method, article, or apparatus that includes a list of elements not only includes those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus. Unless otherwise explicitly specified and limited, the terms "mounting", "connected", "connected" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0043] Although the preferred embodiments of the utility model have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to cover the preferred embodiments and all changes and modifications falling within the scope of the utility model.

[0044] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalent technologies, the utility model also intends to include these modifications and variations.

Claims

1. An electrically operated device for a molded case circuit breaker, characterized in that, include: A molded case circuit breaker (1) is fixedly installed on a base plate (2); The base plate (2) is used to support the various components of the electric operating device; Handle sleeve (3) is installed on the handle of the molded case circuit breaker. The upper and lower ends of the handle sleeve are respectively connected to the first operating armature (81) and the second operating armature (82). The closing coil (4) is connected to the handle sleeve through the first actuating armature (81) to generate a suction force when the closing coil is energized to attract the first actuating armature (81), thereby driving the handle sleeve (3) and the handle to move and complete the closing of the molded case circuit breaker (1). The tripping coil (5) is connected to the handle sleeve through the second actuating armature (82). When the tripping coil is energized, it generates a suction force to attract the second actuating armature (82), thereby driving the handle sleeve (3) and the handle to move and complete the tripping of the molded case circuit breaker (1).

2. The electrically operated device for a molded case circuit breaker according to claim 1, characterized in that, Also includes: Limit rod (9) is fixedly installed on the left and right ends of the handle sleeve and is used to drive the contacts of the opening and closing limit switch to move when the opening and closing action of the handle is in place. The closing limit switch (6) is fixedly installed on the base plate (2). The closing limit switch is installed on the limit rod (9) when the circuit breaker is closed. After the circuit breaker is closed, the limit rod (9) triggers the action to disconnect the power supply circuit of the closing coil. The trip limit switch (7) is fixedly installed on the base plate (2). The trip limit switch is installed on the limit rod (9) when the trip is in place. After the molded case circuit breaker is tripped, the limit rod (9) triggers the action to disconnect the power supply circuit of the trip coil.

3. The electrically operated device for a molded case circuit breaker according to claim 1, characterized in that, The molded case circuit breaker (1) is made of polyester resin or epoxy resin.

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