CN220873426U

CN220873426U - Cable joint fixing mechanism, operating mechanism box and circuit breaker

Info

Publication number: CN220873426U
Application number: CN202322094233.XU
Authority: CN
Inventors: 纪存栋; 马飞; 孙洁雨
Original assignee: Siemens Energy High Voltage Switch Hangzhou Co ltd
Current assignee: Siemens Energy High Voltage Switch Hangzhou Co ltd
Priority date: 2023-08-04
Filing date: 2023-08-04
Publication date: 2024-04-30
Anticipated expiration: 2033-08-04

Abstract

The utility model provides a cable joint fixing mechanism, an operating mechanism box and a circuit breaker, wherein the cable joint fixing mechanism comprises a connecting part and a fixing bracket, the connecting part is used for being connected with a first side wall of the operating mechanism box in the circuit breaker, and the first side wall is a side wall which is arranged opposite to a second side wall of the operating mechanism box, in which an operating mechanism is arranged. The fixed bolster is provided with the mounting hole with connecting portion fixed connection, and the mounting hole is used for installing cable joint. When the connecting portion is connected with the first side wall of the operating mechanism box, the insertion direction of the cable connector installed in the installation hole is parallel to the first side wall, so that the insertion direction of the power cable is parallel to the first side wall when the power cable is inserted into the cable connector, the position of the power cable is not interfered with the position of the operating mechanism, the risk of collision with the operating mechanism is avoided, the power cable connection is stable and reliable, and a user can conveniently insert or extract the power cable.

Description

Cable joint fixing mechanism, operating mechanism box and circuit breaker

Technical Field

The application relates to the technical field of circuit breakers, in particular to a cable joint fixing mechanism, an operating mechanism box and a circuit breaker.

Background

The circuit breaker is a switching device capable of carrying, closing and opening a normal current of an operation line and carrying, closing and opening a specified abnormal current (such as a short-circuit current) within a specified time, and is an important electrical device for protecting and operating an electric power system. The circuit breaker comprises a high-voltage circuit breaker and a low-voltage circuit breaker which are respectively applied to circuit systems with different voltages. The high-voltage circuit breaker can comprise an on-off element, an operating mechanism box, a transmission mechanism, a supporting base and the like.

In the prior art, a fixing frame for installing a cable joint is arranged in an operating mechanism box of a circuit breaker. The fixing frame is usually arranged on the other side wall of the operating mechanism box, which is opposite to the side wall of the box body for fixing the operating mechanism, and the cable connector on the fixing frame faces the direction of the operating mechanism. Because the operating mechanism box inner space is smaller, when the cable is connected on the joint, the space between the cable and the operating mechanism is smaller, and the risk of unstable cable connection caused by collision with a moving part of the operating mechanism and the problem of inconvenient operation when the cable is connected or pulled out exist.

Disclosure of utility model

In order to solve the above technical problems, embodiments of the present application provide a cable joint fixing mechanism, an operating mechanism box and a circuit breaker, so as to at least partially solve the above problems.

According to a first aspect of an embodiment of the present application, there is provided a cable joint fixing mechanism, including a connection portion and a fixing bracket, wherein the connection portion is used for being connected with a first side wall of an operating mechanism box in a circuit breaker, and the first side wall is a side wall opposite to a second side wall in the operating mechanism box, in which an operating mechanism is installed; the fixed bolster is provided with the mounting hole with connecting portion fixed connection, and the mounting hole is used for installing cable joint, and when connecting portion and the first side wall of operating device case were connected, the direction of insertion of cable joint installed in the mounting hole was parallel with first side wall, and cable joint is used for pegging graft power cable, and power cable is used for supplying power and transmission control signal to the electrical component in the operating device case, and electrical component is used for carrying out opening brake or closing brake operation according to control signal control operating device to realize opening and shutting of circuit breaker.

In an alternative implementation manner, the fixing support comprises a plurality of fixing portions, each fixing portion is provided with a mounting hole, the fixing support is in a ladder shape, and the fixing portions on the fixing support are arranged in parallel.

In an alternative implementation, the plurality of fixing portions on the fixing bracket are perpendicular to the bottom plate of the operating mechanism box when the connecting portion is connected to the first side wall of the operating mechanism box.

In an alternative implementation, the connection portion includes at least a first connection portion and a second connection portion, the fixing support is vertically connected with the connection portion, the first connection portion is connected with the fixing portion located at one end of the fixing support, and the second connection portion is connected with the fixing portion located at the other end of the fixing support.

In an alternative implementation, the first connection portion includes a first connection surface, and the second connection portion includes a second connection surface, the second connection surface having an area smaller than an area of the first connection surface.

In an alternative implementation, the plurality of fixing portions on the fixing bracket are disposed at equal intervals in a direction parallel to the first sidewall.

In an alternative implementation manner, when the connecting portion is connected with the first side wall of the operating mechanism box, the length of the fixing support in the direction perpendicular to the first side wall of the operating mechanism box falls into a preset length interval, and the preset length interval is a length interval greater than or equal to 75mm and less than or equal to 90 mm.

In an alternative implementation, the fixing support comprises an avoidance hole, and the avoidance hole is arranged on the surface perpendicular to the fixing part in the stepped fixing support.

According to a second aspect of the embodiment of the present application, there is provided an operation mechanism box, at least comprising a box body, an operation mechanism, a cable connector electrically connected to the operation mechanism, a power cable, and the cable connector fixing mechanism according to the first aspect, wherein the cable connector fixing mechanism is mounted on a first side wall of the box body, the operation mechanism is mounted on a second side wall of the box body, the first side wall is disposed opposite to the second side wall, the cable connector is fixed on the cable connector fixing mechanism through a mounting hole, and the cable connector is used for inserting the power cable.

In an alternative implementation, the cable connector includes a plurality of cable connectors, the plurality of cable connectors are respectively fixed at a plurality of fixing portions of the cable connector fixing mechanism, the power cable includes a plurality of power cables, and the plurality of power cables are respectively inserted into the plurality of cable connectors.

In an alternative implementation, a cable access is provided on the base plate of the housing, and the power cable extends into the housing from the cable access, and when the power cable is inserted into the fixing portion of the cable joint fixing mechanism, the position of the power cable and the cable access are aligned in a direction perpendicular to the base plate.

According to a third aspect of the embodiment of the application, there is provided a circuit breaker, at least comprising an on-off element, a transmission mechanism, a supporting base and the operating mechanism box in the second aspect, wherein the operating mechanism box is installed on the supporting base, the operating mechanism box is connected with the transmission mechanism, the transmission mechanism is connected with the on-off element, the transmission mechanism is driven to move by the operating mechanism in the operating mechanism box, the transmission mechanism drives the on-off element to be turned on or off, and the circuit breaker is applied to a high-voltage circuit of 72.5 kv or more and 800 kv or less.

The application provides a cable joint fixing mechanism, an operating mechanism box and a circuit breaker, wherein the cable joint fixing mechanism comprises a connecting part and a fixing bracket, wherein the connecting part is used for being connected with a first side wall of the operating mechanism box in the circuit breaker, and the first side wall is a side wall which is arranged opposite to a second side wall of the operating mechanism box, in which an operating mechanism is arranged. The fixed bolster is provided with the mounting hole with connecting portion fixed connection, and the mounting hole is used for installing cable joint. When the connecting part is connected with the first side wall of the operating mechanism box, the inserting direction of the cable connector arranged in the mounting hole is parallel to the first side wall, so that the inserting direction of the power cable is also parallel to the first side wall when the power cable is inserted into the cable connector, the power cable is used for supplying power to and transmitting control signals to electric elements in an operating mechanism in the operating mechanism box, and the electric elements are used for controlling the operating mechanism to perform opening or closing operation according to the control signals so as to realize opening or closing of the circuit breaker. When the power cable is spliced on the cable connector, the position of the power cable is not interfered with the position of the operating mechanism, so that the risk of collision with the operating mechanism is avoided, and the power cable connection is stable and reliable; meanwhile, the power cable is more convenient for a user to insert or pull out, and the operation space is not limited by the operation mechanism arranged on the second side wall.

Drawings

Fig. 1 is a schematic structural view of a cable joint fixing mechanism according to an exemplary embodiment of the present application;

fig. 2 is a front view of a cable tie securing mechanism according to an exemplary embodiment of the present application;

FIG. 3 is a left side view of a cable connector securing mechanism according to an exemplary embodiment of the present application;

FIG. 4 is a schematic view of the internal structure of an operator box according to an exemplary embodiment of the present application;

FIG. 5 is a cross-sectional view of an operator station housing according to an exemplary embodiment of the present application;

FIG. 6 is a schematic view of the structure of the floor of the operator station enclosure of an exemplary embodiment of the present application;

list of reference numerals:

1. an operating mechanism box; 11. a cable joint fixing mechanism; 1111. a first connection portion; 1112. a second connecting portion; 1121. a fixing part; 1122. a mounting hole; 1123. avoidance holes; 12. an operating mechanism; 13. a first sidewall; 14. a second sidewall; 15. a bottom plate; 151. a cable access port; 2. a cable joint; 21. a ground wire bolt; 3. a power cable.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Before explaining the cable connector fixing mechanism, the operating mechanism box and the circuit breaker according to the embodiment of the application, application scenes of the cable connector fixing mechanism, the operating mechanism box and the circuit breaker are briefly described so as to facilitate understanding.

In the prior art, a fixing frame for installing a cable joint is arranged in an operating mechanism box of a circuit breaker. The fixing frame is usually arranged on the other side wall of the operating mechanism box, which is opposite to the side wall of the box body for fixing the operating mechanism, and the cable connector on the fixing frame faces the direction of the operating mechanism. Because the operating mechanism box inner space is smaller, when the cable is connected on the joint, the space between the cable and the operating mechanism is smaller, and the risk of unstable cable connection caused by collision with a moving part of the operating mechanism and the problem of inconvenient operation when the cable is connected or pulled out exist. Accordingly, the present application provides a cable connector fixing mechanism, an operating mechanism box and a circuit breaker, which can solve the above problems in the prior art.

Specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 5, the present embodiment provides a cable joint fixing mechanism 11, and the cable joint fixing mechanism 11 may include a connection portion and a fixing bracket.

Wherein the connection portion is used for being connected with a first side wall 13 of the operating mechanism box 1 in the circuit breaker, and the first side wall 13 is a side wall which is arranged opposite to a second side wall 14 in which the operating mechanism 12 is installed in the operating mechanism box 1. Specifically, the connection portion may be detachably connected to the first side wall 13 of the operating mechanism box 1, for example, by bolting, and may be provided with a plurality of threaded holes, and the connection portion is mounted on the first side wall 13 of the operating mechanism box 1 by matching the screws with the threaded holes, so as to be convenient to mount and dismount. The connection portion may be a connection plate, the shape of the connection plate may be rectangular or the like, which is not limited in this embodiment.

The fixed bolster is provided with mounting hole 1122 on the fixed bolster with connecting portion fixed connection, and mounting hole 1122 is used for installing cable joint 2, and when connecting portion and operating mechanism case 1's first side wall 13 were connected, the direction of inserting of cable joint 2 installed in mounting hole 1122 was parallel with first side wall 13, and cable joint 2 is used for pegging graft power cable 3, and power cable 3 is used for supplying power and transmission control signal to the electrical component in the operating mechanism 12 in operating mechanism case 1, and electrical component is used for carrying out opening or closing operation according to control signal control operating mechanism 12 to realize opening or closing of circuit breaker. Specifically, the fixing support and the connecting portion may be integrally formed, or may be connected by a fixed connection manner such as welding, and an included angle formed by the fixing support and the fixed connection of the connecting portion may be a right angle, so that when the connecting portion is connected with the first side wall 13 of the operating mechanism box 1, the fixing support is perpendicular to the first side wall 13 of the operating mechanism box 1, an axis of the mounting hole 1122 on the fixing support is parallel to the first side wall 13 of the operating mechanism box 1, and when the cable connector 2 is mounted in the mounting hole 1122, an insertion direction of the cable connector 2 is also parallel to the first side wall 13. In addition, the connection mode of the cable connector 2 and the mounting hole 1122 is detachable connection, so that the electrical connector can be conveniently detached, replaced and mounted if the cable connector 2 fails. The power cable 3 can be a low-temperature-resistant flame-retardant 47-core cable, and is used for supplying power to and transmitting control signals to electric elements in the operating mechanism box 1 where the cable joint fixing mechanism 11 is located, and the electric elements control the operating mechanism 12 to perform opening or closing operation according to the received control signals so as to drive a transmission mechanism connected with the operating mechanism 12 to move and further drive an on-off element connected with the transmission mechanism to be opened or closed, so that the opening or closing of the circuit breaker is realized. The circuit breaker in this embodiment may be adapted for use in a high voltage circuit of 72.5 to 800 kv.

The cable joint fixing mechanism 11 of the present embodiment includes a connecting portion for connecting with a first side wall 13 of the operating mechanism case 1, the first side wall 13 being a side wall disposed opposite to a second side wall 14 in the operating mechanism case 1 in which the operating mechanism 12 is mounted, and a fixing bracket. The fixing bracket is fixedly connected with the connecting portion, and is provided with a mounting hole 1122, and the mounting hole 1122 is used for mounting the cable joint 2. When the connecting part is connected with the first side wall 13 of the operating mechanism box 1, the inserting direction of the cable connector 2 arranged in the mounting hole 1122 is parallel to the first side wall 13, so that the inserting direction of the power cable is also parallel to the first side wall 13 when the power cable is inserted into the cable connector 2, when the power cable is plugged into the cable connector 2, the position of the power cable is not interfered with the position of the operating mechanism 12, the risk of collision with the operating mechanism 12 is avoided, and the power cable connection is stable and reliable; at the same time, it is easier for the user to perform the insertion or extraction operation of the power cable without the operation space being limited by the operating mechanism 12 mounted on the second side wall 14.

In an alternative implementation, the fixing bracket includes a plurality of fixing portions 1121, and each fixing portion 1121 is provided with a mounting hole 1122, and the fixing bracket is in a step shape, and the plurality of fixing portions 1121 on the fixing bracket are arranged in parallel. For example, referring to fig. 1, 3 and 5, the circuit breaker needs to access a plurality of power cables, and thus, a plurality of cable joints 2 need to be fixed on a fixed bracket to cooperatively connect the plurality of power cables. Accordingly, the fixing bracket may be configured to have a stepped shape, and includes a plurality of fixing portions 1121, for example, three fixing portions 1121 may be configured, and one mounting hole 1122 may be formed in each fixing portion 1121, so that one cable connector 2 may be mounted to each fixing portion 1121. The fixing support is in a ladder shape, and a plurality of fixing portions 1121 on the fixing support are arranged in parallel, namely, the plurality of fixing portions 1121 are distributed on planes parallel to each other on the ladder, and no situation that any two fixing portions 1121 are perpendicular to each other exists. In the present embodiment, the angle of the angle between the plane on the stepped fixing bracket and the bottom plate 15 of the operating mechanism case 1 is not limited, and the bottom plate 15 of the operating mechanism case 1 and the operating mechanism case 1 are perpendicular to both the first side wall 13 and the second side wall 14.

In the present embodiment, referring to fig. 5, the fixing bracket includes a plurality of fixing portions 1121, so that a plurality of cable joints 2 can be fixed, and the fixing bracket can be applied to a circuit breaker having a plurality of power cables. In order to ensure that the power cables are not interfered when being inserted into the cable connector 2 on the fixing support, and enough operation space is maintained, the fixing support is arranged in a stepped shape, and the fixing portions 1121 are arranged in parallel on the fixing support, so that the power cables are arranged in staggered layers on the fixing support, and the power cables are ensured to have proper intervals when being inserted into the cable connector 2.

In an alternative implementation, the plurality of securing portions 1121 on the securing bracket are perpendicular to the floor 15 of the operator station housing 1 when the connecting portion is connected to the first side wall 13 of the operator station housing 1. Illustratively, referring to fig. 4 and 5, the floor 15 of the operator compartment 1 is perpendicular to both the first side wall 13 and the second side wall 14 in the operator compartment 1. When the connection portion of the cable joint fixing mechanism 11 is connected to the first side wall 13 of the operating mechanism box 1, the fixing portions 1121 on the fixing support are perpendicular to the bottom plate 15 of the operating mechanism box 1, that is, the included angle between the plane on the stepped fixing support and the bottom plate 15 of the operating mechanism box 1 is 0 degree or 90 degrees, respectively, it may be understood that the plane on the stepped fixing support is parallel to or perpendicular to the bottom plate 15 of the operating mechanism box 1, and the fixing portions 1121 are distributed on the plane perpendicular to the operating mechanism box 1 in the stepped fixing support, but not on the plane parallel to the bottom plate 15 of the operating mechanism box 1 in the stepped fixing support.

In the present embodiment, when the connecting portion of the cable joint fixing mechanism 11 is connected to the first side wall 13 of the operating mechanism case 1, the plurality of fixing portions 1121 on the fixing bracket are perpendicular to the bottom plate 15 of the operating mechanism case 1. By disposing the plurality of fixing portions 1121 on the plane perpendicular to the operating mechanism case 1 in the stepped fixing bracket, the arrangement of the cable joints 2 on the fixing portions 1121 can be made more compact, and the insertion positions of the plurality of power cables are also made more compact and space-saving when the plurality of power cables are inserted into the cable joints 2 on the fixing portions 1121.

In an alternative implementation, the fixing bracket includes a relief hole 1123, and the relief hole 1123 is disposed on a surface perpendicular to the fixing portion 1121 in the stepped fixing bracket. Illustratively, referring to fig. 1 and 5, the fixing bracket includes avoidance holes 1123, where the avoidance holes 1123 are correspondingly disposed on surfaces of the stepped fixing bracket perpendicular to the fixing portion 1121, and one avoidance hole 1123 is disposed on each surface of the fixing bracket perpendicular to the fixing portion 1121, and the number of the avoidance holes 1123 corresponds to the number of the mounting holes 1122. When the cable joint 2 is mounted on the fixing portion 1121, the ground wire bolt 21 on the cable joint 2 is aligned with the escape hole 1123, and when the ground wire bolt 21 needs to be fastened or detached, an operating tool can directly pass through the escape hole 1123 to operate, so that the operation is facilitated.

In an alternative implementation, the connection portion includes at least a first connection portion 1111 and a second connection portion 1112, the fixing bracket is vertically connected to the connection portion, the first connection portion 1111 is connected to a fixing portion 1121 located at one end of the fixing bracket, and the second connection portion 1112 is connected to a fixing portion 1121 located at the other end of the fixing bracket. For example, referring to fig. 1 to 3, the connection part may include a first connection part 1111 and a second connection part 1112, and the fixing bracket is vertically connected to both the first connection part 1111 and the second connection part 1112, wherein the first connection part 1111 may be connected to a fixing part 1121 located at one end of the fixing bracket, and the second connection part 1112 may be connected to a fixing part 1121 located at the other end of the fixing bracket. The first connection portion 1111, the second connection portion 1112, and the fixing bracket may be integrally formed, or may be fixedly connected by welding or the like, which is not limited in this embodiment.

In this embodiment, the fixing bracket of the cable connector fixing mechanism 11 is vertically connected to the connecting portion, so that a space between the connecting portion and the fixing bracket can be ensured to be sufficient for accommodating the power cable inserted into the cable connector 2. The connection part may include a first connection part 1111 and a second connection part 1112, the first connection part 1111 is connected with a fixing part 1121 located at one end of the fixing bracket, the second connection part 1112 is connected with a fixing part 1121 located at the other end of the fixing bracket, and both ends of the fixing bracket may be connected through the first connection part 1111 and the second connection part 1112, respectively, so that the fixing bracket is more stable and reliable when being connected to the first sidewall 13 of the operating mechanism box 1 through the connection part.

In an alternative implementation, the first connection 1111 includes a first connection surface and the second connection 1112 includes a second connection surface having an area smaller than an area of the first connection surface. For example, referring to fig. 1 and 3, the first connection portion 1111 and the second connection portion 1112 may be connection plates, the first connection portion 1111 includes a first connection surface, the second connection portion 1112 includes a second connection surface, and when the first connection portion 1111 and the second connection portion 1112 are connected with the first side wall 13 of the operating mechanism case 1, the first connection surface and the second connection surface are respectively connected with the first side wall 13 of the operating mechanism case 1, and an area of the second connection surface of the second connection portion 1112 may be smaller than an area of the first connection surface of the first connection portion 1111. In this implementation manner, the area of the second connection surface of the second connection portion 1112 is smaller than the area of the first connection surface of the first connection portion 1111, so that the material consumption of the connection portion can be reduced and the production cost of the cable connector fixing mechanism 11 can be reduced under the condition that the connection stability of the first connection portion 1111 and the second connection portion 1112 and the first side wall 13 of the operating mechanism box 1 is ensured.

In an alternative implementation, the plurality of fixing portions 1121 on the fixing bracket are disposed at equal intervals in a direction parallel to the first sidewall 13. Illustratively, referring to fig. 3 and 5, the plurality of fixing portions 1121 on the fixing bracket may be disposed at equal intervals in a direction parallel to the first sidewall 13, i.e., the lengths of L1 and L2 illustrated as being equal, for example, the lengths of L1 and L2 may be greater than or equal to 60mm, where the lengths of LI and L2 may be flexibly set by one skilled in the art according to the size of the cable joint 2, the space in which the power cable is inserted, etc., which is not limited in this embodiment. In this implementation manner, the fixing portions 1121 on the fixing support are arranged at equal intervals along the direction parallel to the first side wall 13, so that the stress of the whole fixing support is more balanced, and the whole structure is more compact and attractive.

In an alternative embodiment, the length of the fixing bracket in the direction perpendicular to the first side wall 13 of the operating mechanism box 1 falls within a preset length interval when the connecting portion is connected to the first side wall 13 of the operating mechanism box 1. For example, referring to fig. 2 and 4, when the connection portion of the cable joint fixing mechanism 11 is connected to the first side wall 13 of the operating mechanism case 1, the length of the fixing bracket in the direction perpendicular to the first side wall 13 of the operating mechanism case 1 (i.e., L3 shown in the drawing) falls within a preset length interval, the lower limit value of which may be determined according to the size of the cable joint 2 to be installed, and the upper limit value of which may be set by one skilled in the art according to the interval between the first side wall 13 of the operating mechanism case 1 and the operating mechanism 12, and the safety interval that should be maintained between the operating mechanism 12 and the cable joint fixing mechanism 11. Preferably, the preset length interval may be a length interval greater than or equal to 75mm and less than or equal to 90mm, and it should be noted that the length of the fixing bracket in the direction perpendicular to the first sidewall 13 of the operating mechanism box 1 may be an upper limit value 90mm or a lower limit value 75mm of the preset length interval.

In this embodiment, when the connection portion is connected to the first side wall 13 of the operating mechanism box 1, the length of the fixing bracket in the direction perpendicular to the first side wall 13 of the operating mechanism box 1 falls within the preset length interval. When the power cable is inserted into the cable joint 2 on the fixed support, the safety distance between the power cable and the moving part of the operating mechanism 12 in the operating mechanism box 1 is ensured, so that the connection of the power cable is ensured to be stable and reliable.

According to a second aspect of the embodiment of the present application, there is provided an operating mechanism box 1, wherein the operating mechanism box 1 may include at least a box body, an operating mechanism 12, a cable connector 2 electrically connected to the operating mechanism 12, a power cable, and the cable connector fixing mechanism 11 described in the foregoing embodiment, wherein the cable connector fixing mechanism 11 may be detachably mounted on a first side wall 13 of the box body, the operating mechanism 12 is mounted on a second side wall 14 of the box body, and the first side wall 13 is disposed opposite to the second side wall 14. The cable connector 2 can be detachably fixed on the cable connector fixing mechanism 11 through the mounting hole 1122, and the power cable can enter the box through the opening at the bottom of the box and be plugged on the cable connector 2. The cable connector 2 is electrically connected to an electric element in the operating mechanism 12 in the case, and after the cable connector 2 is connected to the power cable, the operating mechanism 12 can be electrically connected to an external electric device.

In the operating mechanism box 1 in the embodiment, the cable connector fixing mechanism 11 described in the embodiment is installed on the first side wall 13, which is opposite to the second side wall 14 where the operating mechanism 12 is installed, in the operating mechanism box 1, when an externally connected power cable is plugged into the cable connector 2 fixed on the cable connector fixing mechanism 11, the position of the power cable is not interfered with the position of the operating mechanism 12, and the risk of collision with the operating mechanism 12 is avoided, so that the power cable connection is stable and reliable; at the same time, it is easier for the user to perform the insertion or extraction operation of the power cable without the operation space being limited by the operating mechanism 12 mounted on the second side wall 14.

In an alternative implementation, the bottom plate 15 of the box is provided with a cable inlet 151, the power cable 3 extends into the box from the cable inlet 151, and when the power cable 3 is inserted into the fixing portion 1121 of the cable joint fixing mechanism 11, the power cable 3 is aligned with the position of the cable inlet 151 in a direction perpendicular to the bottom plate 15. Illustratively, referring to fig. 5 and 6, the bottom plate 15 of the case is provided with cable access ports 151, and the number of cable access ports 151 may be set according to the number of power cables 3. The power cable 3 can stretch into the box from cable access port 151, can set up the glan head on the cable access port 151, and the glan head is used for fixed power cable 3, guarantees that power cable 3's connection is stable. The installation position of the cable joint fixing mechanism 11 on the first side wall 13 may be determined according to the position of the cable inlet 151 on the bottom plate 15, and the installation position of the cable joint fixing mechanism 11 on the first side wall 13 needs to be satisfied, when the power cable 3 is inserted into the fixing portion 1121 of the cable joint fixing mechanism 11, the power cable 3 is aligned with the position of the cable inlet 151 along the direction perpendicular to the bottom plate 15, that is, the cable of the power cable 3 may vertically extend into the cable inlet 151 under the action of gravity thereof. Without bending, the service life of the power cable 3 can be prolonged.

In an alternative implementation, the cable connector 2 includes a plurality of the plurality of cable connectors 2 respectively fixed to the plurality of fixing portions 1121 of the cable connector fixing mechanism 11, and the power cable includes a plurality of the plurality of power cables respectively inserted into the plurality of cable connectors 2. Illustratively, referring to fig. 4 and 5, the cable joint 2 includes a plurality of cable joints 2 respectively fixed to a plurality of fixing portions 1121 of the cable joint fixing mechanism 11, the plurality of cable joints 2 are in one-to-one correspondence with the plurality of fixing portions 1121, the power cable 3 also includes a plurality of power cables 3 respectively inserted into the plurality of cable joints 2 fixed to the cable joint fixing mechanism 11, and the plurality of power cables 3 are in one-to-one correspondence with the plurality of cable joints 2.

In this embodiment, the plurality of cable joints 2 can be fixed by the plurality of fixing portions 1121 of the cable joint fixing mechanism 11, so that a plurality of power cables can be connected in a matching manner, so that the operating mechanism box 1 of this embodiment can be applied to a circuit breaker in which electrical connection between electrical components is required to be performed by using a plurality of power cables, and the application range is wider.

According to a third aspect of the embodiment of the present application, there is provided a circuit breaker, at least comprising an on-off element, a transmission mechanism, a support base and the operating mechanism box 1 according to the second aspect, wherein the operating mechanism box 1 is mounted on the support base, the operating mechanism box 1 is connected with the transmission mechanism, the transmission mechanism is connected with the on-off element, the transmission mechanism is driven to move by the operating mechanism 12 in the operating mechanism box 1, the transmission mechanism drives the on-off element to be turned on or off, and the circuit breaker is applied to a high-voltage circuit of 72.5 kv or more and 800 kv or less.

Illustratively, the circuit breaker may include an on-off element, a transmission mechanism, a supporting base, and the operating mechanism box 1 described in the foregoing embodiments, where the operating mechanism box 1 is mounted on the supporting base, the operating mechanism box 1 is connected with the transmission mechanism, the transmission mechanism is connected with the on-off element, and a user may perform an opening operation or a closing operation on the operating mechanism 12 in the operating mechanism box 1, and drive the transmission mechanism to move through the operating mechanism 12, so that the on-off element is driven to be opened or closed by using the transmission mechanism, so as to implement a function of closing the circuit breaker or opening a current of a circuit system connected with the circuit breaker.

The circuit breaker of the present embodiment is a high-voltage circuit breaker, and may be applied to a high-voltage circuit of 72.5 to 800 kv. The circuit breaker of this embodiment may also be a circuit breaker of three-phase independent operating mechanism 12, may be that three groups of on-off mechanisms are set up on three independent support bases, and each group of on-off mechanisms may include an on-off element, a transmission mechanism and an operating mechanism box 1 described in the foregoing embodiment, and meanwhile, the circuit breaker further includes a junction box, where the junction box is connected with each operating mechanism box 1 through a power cable 3, and the junction box transmits a control signal to an electrical element in an operating mechanism of each operating mechanism box 1 through the power cable 3, so that each group of on-off mechanisms may be controlled through the junction box.

In the circuit breaker of the embodiment, by using the operating mechanism box 1 of the embodiment in the circuit breaker, the cable connector fixing mechanism 11 described in the embodiment is installed on the first side wall 13, which is opposite to the second side wall 14 on which the operating mechanism 12 is installed, in the operating mechanism box 1, when the power cable is plugged into the cable connector 2 fixed on the cable connector fixing mechanism 11, the position of the power cable and the position of the operating mechanism 12 do not interfere with each other, so that the risk of collision with the operating mechanism 12 does not exist, and the power cable connection can be stable and reliable; at the same time, it is easier for the user to perform the insertion or extraction operation of the power cable without the operation space being limited by the operating mechanism 12 mounted on the second side wall 14.

It should be noted that not all the steps and modules in the above flowcharts and the system configuration diagrams are necessary, and some steps or modules may be omitted according to actual needs. The execution sequence of the steps is not fixed and can be adjusted as required. The system structure described in the above embodiments may be a physical structure or a logical structure, that is, some modules may be implemented by the same physical entity, or some modules may be implemented by multiple physical entities, or may be implemented jointly by some components in multiple independent devices.

In the above embodiments, the hardware module may be mechanically or electrically implemented. For example, a hardware module may include permanently dedicated circuitry or logic (e.g., a dedicated processor, FPGA, or ASIC) to perform the corresponding operations. The hardware modules may also include programmable logic or circuitry (e.g., a general-purpose processor or other programmable processor) that may be temporarily configured by software to perform the corresponding operations. The particular implementation (mechanical, or dedicated permanent, or temporarily set) may be determined based on cost and time considerations.

While the application has been illustrated and described in detail in the drawings and in the preferred embodiments, the application is not limited to the disclosed embodiments, and it will be appreciated by those skilled in the art that many other embodiments of the application can be made by combining the technical means of the various embodiments described above, which are also within the scope of the application.

Claims

1. A cable joint fixing mechanism, comprising:

The connecting part is used for being connected with a first side wall (13) of an operating mechanism box (1) in the circuit breaker, and the first side wall (13) is a side wall which is arranged opposite to a second side wall (14) of the operating mechanism box (1) in which an operating mechanism (12) is arranged;

The fixed bolster, the fixed bolster with connecting portion fixed connection, the fixed bolster is provided with mounting hole (1122), mounting hole (1122) are used for installing cable joint (2), connecting portion with when first lateral wall (13) of operating mechanism case (1) are connected, install the direction of insertion of cable joint (2) in mounting hole (1122) with first lateral wall (13) are parallel, cable joint (2) are used for pegging graft power cable (3), power cable (3) be used for to electric element in operating mechanism (12) in operating mechanism case (1) power supply and transmission control signal, electric element is used for according to control signal control operating mechanism (12) carries out opening or closing operation, in order to realize opening or closing of circuit breaker.

2. The cable joint fixing mechanism according to claim 1, wherein the fixing bracket comprises a plurality of fixing portions (1121), the mounting hole (1122) is provided in each fixing portion (1121), the fixing bracket is stepped, and the plurality of fixing portions (1121) on the fixing bracket are arranged in parallel.

3. The cable joint fixing mechanism according to claim 2, wherein a plurality of the fixing portions (1121) on the fixing bracket are perpendicular to a bottom plate (15) of the operating mechanism case (1) when the connecting portion is connected to a first side wall (13) of the operating mechanism case (1).

4. A cable joint fixing mechanism according to claim 2 or 3, wherein the connection portion comprises at least a first connection portion (1111) and a second connection portion (1112), the fixing bracket is vertically connected to the connection portion, the first connection portion (1111) is connected to the fixing portion (1121) located at one end of the fixing bracket, and the second connection portion (1112) is connected to the fixing portion (1121) located at the other end of the fixing bracket.

5. The cable fitting securement mechanism of claim 4, wherein the first connection (1111) includes a first connection surface and the second connection (1112) includes a second connection surface having an area that is smaller than an area of the first connection surface.

6. The cable joint fixing mechanism according to claim 2, wherein a plurality of the fixing portions (1121) on the fixing bracket are arranged at equal intervals in a direction parallel to the first side wall (13).

7. The cable joint fixing mechanism according to claim 1, wherein when the connecting portion is connected with the first side wall (13) of the operating mechanism box (1), the length of the fixing bracket in the direction perpendicular to the first side wall (13) of the operating mechanism box (1) falls within a preset length section, the preset length section being a length section of greater than or equal to 75mm and less than or equal to 90 mm.

8. The cable joint fixing mechanism according to claim 2, wherein the fixing bracket includes a relief hole (1123), the relief hole (1123) being provided in the stepped fixing bracket on a surface perpendicular to the fixing portion (1121).

9. An operating mechanism box for a circuit breaker, characterized in that the operating mechanism box at least comprises a box body, an operating mechanism (12), a cable connector (2) electrically connected with the operating mechanism (12) and a cable connector fixing mechanism (11) according to any one of claims 1-8, wherein the cable connector fixing mechanism (11) is installed on a first side wall (13) of the box body, the operating mechanism (12) is installed on a second side wall (14) of the box body, the first side wall (13) is arranged opposite to the second side wall (14), the cable connector (2) is fixed on the cable connector fixing mechanism (11) through the mounting hole (1122), and the cable connector (2) is used for plugging a power cable (3).

10. The operating mechanism box according to claim 9, characterized in that a cable access port (151) is provided on a bottom plate (15) of the box body, the power cable (3) extends into the box body from the cable access port (151), and when the power cable (3) is inserted into a fixing portion (1121) of the cable joint fixing mechanism (11), the power cable (3) is aligned with a position of the cable access port (151) in a direction perpendicular to the bottom plate (15).

11. The operation mechanism box according to claim 10, wherein the cable connector (2) includes a plurality of, a plurality of the cable connectors (2) are respectively fixed to a plurality of the fixing portions (1121) of the cable connector fixing mechanism (11), the power cable includes a plurality of, and the plurality of power cables are respectively inserted into a plurality of the cable connectors (2).

12. A circuit breaker, characterized by comprising at least an on-off element, a transmission mechanism, a supporting base and an operating mechanism box (1) according to any one of claims 9-11, wherein the operating mechanism box (1) is installed on the supporting base, the operating mechanism box (1) is connected with the transmission mechanism, the transmission mechanism is connected with the on-off element, the transmission mechanism is driven to move by the operating mechanism (12) in the operating mechanism box (1), the transmission mechanism drives the on-off element to be opened or closed, and the circuit breaker is applied to a high-voltage circuit which is greater than or equal to 72.5 kv and less than or equal to 800 kv.