Combined switch of mining vacuum power distribution device

Abstract

The utility model relates to a combination switch, and provides a mining vacuum power distribution device combination switch, which comprises a shell, vacuum circuit breakers, an electric trolley, a driving mechanism and a copper bar, a main cavity, an auxiliary cavity and an intrinsic safety cavity are arranged in the shell, and the vacuum circuit breakers are arranged in each main cavity. A circuit breaker movable contact on the side face of the vacuum circuit breaker is connected with a circuit breaker movable contact in an inserted mode to form a unit loop, the electric trolley is arranged in the main cavity and moves along with the vacuum circuit breaker under driving of a driving mechanism or manual operation, and the copper bars are arranged in the auxiliary cavity in parallel and further connected with a static end binding post. According to the utility model, the fault problems of large multi-point connection resistance, high temperature rise and the like are solved, connection is carried out by adopting a quick plug mode, the problem of difficult wiring under a mine is solved, each intrinsically safe cavity is internally provided with a PLC controller and an intrinsically safe communication interface, the action of a driving mechanism can be controlled, and the functions of electric leakage, overload, locking, video monitoring and the like can be realized. And the main switch is in communication connection with a main switch upper computer, so that automatic and intelligent operation can be realized.

Description

Technical Field

[0001] The utility model relates to a combination switch, in particular to a combination switch of a vacuum power distribution device for mines. Background Art

[0002] At present, in the control system of coal mine explosion-proof equipment, high, medium and low voltage explosion-proof switches are generally vacuum distribution devices consisting of a vacuum circuit breaker installed in a shell. They can only control one power supply, and the connection of each conductive point uses braided wire to complete the conductive function.

[0003] However, since there are many contacts for connection inside the entire switch, it will not only seriously increase the resistance, but also cause fault problems such as excessive temperature rise inside the switch, reducing the service life of the switch. In addition, due to the large number of contacts, it is not convenient to make quick connections in the mine. At the same time, the degree of automation when the switch is working is low, and intelligent operation cannot be achieved. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a combination switch of a vacuum power distribution device for mining, aiming to solve the problems existing in the above-mentioned background technology.

[0005] The utility model is implemented as follows: a mine vacuum power distribution device combination switch, including a housing, a vacuum circuit breaker, an electric trolley, a driving mechanism and a copper busbar;

[0006] The housing is provided with a main cavity, a secondary cavity and an intrinsically safe cavity;

[0007] The vacuum circuit breaker is arranged in each main cavity, and a circuit breaker moving contact is installed on the side of the vacuum circuit breaker. A static terminal connecting post cooperating with the circuit breaker moving contact is also arranged inside the main cavity. The static terminal connecting post and the circuit breaker moving contact are plugged into each other to form a unit circuit.

[0008] The electric trolley is arranged in the main chamber, a travel switch is arranged on the electric trolley, the electric trolley contacts the track in the main chamber, and the electric trolley is also connected to the vacuum circuit breaker, and moves with the drive mechanism or manual drive;

[0009] The copper bars are installed in the auxiliary cavity, and the copper bars are arranged in parallel and connected to the static terminal terminals.

[0010] Preferably, the main cavity, the auxiliary cavity and the intrinsically safe cavity are separated and welded into independent cavities by metal plate supports, so as to ensure that the normal operation of other circuits is not affected when a single circuit fails.

[0011] Preferably, the driving mechanism comprises a servo reduction motor, a lead screw and a ball screw nut;

[0012] The lead screw is rotatably arranged on the metal bottom plate of the electric trolley;

[0013] The servo reduction motor is fixedly arranged on the metal frame of the electric trolley and is transmission-connected to one end of the lead screw;

[0014] The lead screw is matched with the ball screw nut.

[0015] Preferably, the other end of the lead screw is connected to a manual tool.

[0016] Preferably, the servo reduction motor is preferably a synchronous motor, and is electrically connected to a PLC controller arranged in the intrinsically safe cavity.

[0017] Preferably, a side door is installed on the main chamber, and a mechanical locking structure is provided between the side door and the cover plate of the auxiliary chamber.

[0018] Preferably, each of the vacuum circuit breakers has six circuit breaker moving contacts, and each group of circuit breaker moving contacts and the static terminal terminals are located in the same plane.

[0019] Preferably, a video camera is installed in the main cavity to monitor the plugging and unplugging process of the moving contact and the static terminal of the circuit breaker.

[0020] The utility model provides a combination switch for a mine vacuum power distribution device, which has the following technical effects:

[0021] (1) The static terminal terminals on the power supply side and the load side and the parallel copper busbars set in the auxiliary cavity solve the fault problems such as high resistance and high temperature rise caused by multi-point connection;

[0022] (2) The power supply side input line and the load side output are connected by quick plug-in, which effectively solves the problem of difficult wiring in the mine;

[0023] (3) Each intrinsically safe cavity is equipped with a PLC controller and an intrinsically safe communication interface, which can control the action of the drive mechanism or functions such as leakage, overload, locking, video monitoring, etc., and communicate with the main switch host computer to realize automated and intelligent operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional structural diagram of a combination switch of a vacuum power distribution device for mining provided in an embodiment of the utility model;

[0025] Figure 2 A schematic diagram of the structure of a main chamber in a combination switch of a vacuum power distribution device for mining provided in an embodiment of the utility model Figure 1 ;

[0026] Figure 3 A schematic diagram of the structure of a main chamber in a combination switch of a vacuum power distribution device for mining provided by the embodiment of the utility model Figure 2 ;

[0027] Figure 4 A schematic diagram of the partial structure of a sub-cavity in a combination switch of a vacuum power distribution device for mining provided by the embodiment of the utility model Figure 1 ;

[0028] Figure 5 A schematic diagram of the partial structure of a sub-cavity in a combination switch of a vacuum power distribution device for mining provided by the embodiment of the utility model Figure 2 ;

[0029] In the attached figure: 1-main chamber; 2-auxiliary chamber; 3-intrinsically safe chamber; 4-vacuum circuit breaker; 5-circuit breaker moving contact; 6-static terminal; 7-copper busbar; 8-video camera; 9-hook; 10-servo reduction motor; 11-screw; 12-electric trolley; 13-travel switch; 14-handle; 15-track. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0032] like Figures 1 to 5 As shown, a structural diagram of a combination switch of a vacuum power distribution device for mining provided by an embodiment of the utility model comprises a housing, a vacuum circuit breaker 4, an electric trolley 12, a driving mechanism and a copper bar 7; a main chamber 1, a sub-chamber 2 and an intrinsically safe chamber 3 are arranged in the housing; the vacuum circuit breaker 4 is arranged in each main chamber 1, a circuit breaker moving contact 5 is installed on the side of the vacuum circuit breaker 4, and a static terminal terminal 6 cooperating with the circuit breaker moving contact 5 is arranged inside the main chamber 1, and the static terminal terminal 6 is plugged with the circuit breaker moving contact 5 to form a unit circuit; the electric trolley 12 is arranged in the main chamber 1, a travel switch 13 and a buckle 14 are arranged on the side of the electric trolley 12, the electric trolley 12 contacts with the track 15 in the main chamber 1, and the electric trolley 12 is also connected to the vacuum circuit breaker 4, and moves therewith under the drive of the driving mechanism or manual operation; the copper bar 7 is installed in the sub-chamber 2, and the copper bar 7 is arranged in parallel and connected to the static terminal terminal 6.

[0033] The utility model provides a combination switch for a vacuum power distribution device for mining. The static terminal terminals 6 on the power supply side and the load side and the parallel copper busbar 7 arranged in the auxiliary chamber 2 solve the fault problems such as large resistance and high temperature rise caused by multi-point connection. The power supply side input line and the load side output are connected in a quick-plug manner, which effectively solves the problem of difficult wiring in the mine. A PLC controller and an intrinsically safe communication interface are arranged in each intrinsically safe chamber 3, which can control the action of the drive mechanism or the functions of leakage, overload, locking, video monitoring, etc., and communicate with the main switch host computer to realize automatic and intelligent operation.

[0034] In an example of the utility model, the main chamber 1, the auxiliary chamber 2 and the intrinsically safe chamber 3 are separated and welded into independent chambers through metal plate supports, so as to ensure that the normal operation of other circuits is not affected when a single circuit fails; at the same time, each of the vacuum circuit breakers 4 has six circuit breaker moving contacts 5, and each group of circuit breaker moving contacts 5 and the static end terminal 6 are located in the same plane. The circuit breaker moving contacts 5 on each vacuum circuit breaker 4 cooperate with the static end terminal 6 to form a conductive circuit when plugged in, and to form an isolation break when separated.

[0035] like Figure 2 and Figure 3 As shown, as a preferred embodiment of the utility model, the driving mechanism includes a servo reduction motor 10, a lead screw 11 and a ball screw nut;

[0036] The lead screw 11 is rotatably arranged on the metal bottom plate of the electric trolley 12;

[0037] The servo reduction motor 10 is fixedly mounted on the metal frame of the electric trolley 12 and is transmission-connected to one end of the lead screw 11;

[0038] The lead screw 11 matches the ball screw nut.

[0039] In one example of the present invention, the servo reduction motor 10 is preferably a synchronous motor, and a PLC controller and an intrinsically safe communication interface are provided in the intrinsically safe cavity 3. The PLC controller is electrically connected to the servo reduction motor 10, and can control the action of the drive mechanism or the leakage, overload, locking, video monitoring and other functions and communicate with the main switch host computer.

[0040] The other end of the lead screw 11 is connected to a manual tool, so that the present application can have both electric and manual driving modes.

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, as another preferred embodiment of the utility model, a side door is installed on the main chamber, and a mechanical locking structure is provided between the side door and the cover plate of the auxiliary chamber 2.

[0042] In one example of the utility model, the mechanical locking structure includes a locking buckle and a hook 9, wherein the locking buckle is arranged on the side door, and the hook 9 is arranged on the electric trolley 12, and the hook 9 is cut into and connected with the locking buckle to form a set of mechanical locking.

[0043] like Figure 2 As shown, as another preferred embodiment of the utility model, a video camera 8 is installed in the main cavity 1 to monitor the plugging and unplugging process of the moving contact 5 and the static terminal 6 of the circuit breaker.

[0044] In one example of the utility model, the circuit breaker moving contact 5 and the static terminal 6 are designed to be plug-in, which can form an isolation fracture, completely isolate the circuit breaker moving contact 5 from the static terminal 6, and monitor the insertion, extraction and formation process of the circuit breaker moving contact 5 and the static terminal 6 through a video camera 8.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A combination switch for a vacuum power distribution device for mining, characterized in that: It includes a housing, a vacuum circuit breaker, an electric trolley, a driving mechanism and a copper busbar; The housing is provided with a main cavity, a secondary cavity and an intrinsically safe cavity; The vacuum circuit breaker is arranged in each main cavity, and a circuit breaker moving contact is installed on the side of the vacuum circuit breaker. A static terminal connecting post cooperating with the circuit breaker moving contact is also arranged inside the main cavity. The static terminal connecting post and the circuit breaker moving contact are plugged into each other to form a unit circuit. The electric trolley is arranged in the main chamber, a travel switch is arranged on the electric trolley, the electric trolley contacts the track in the main chamber, and the electric trolley is also connected to the vacuum circuit breaker, and moves with the drive mechanism or manual drive; The copper bars are installed in the auxiliary cavity, and the copper bars are arranged in parallel and connected to the static terminal terminals.

2. A combination switch for a vacuum power distribution device for mining according to claim 1, characterized in that: The main cavity, the auxiliary cavity and the intrinsically safe cavity are separated and welded into independent cavities by metal plate support, so as to ensure that the normal operation of other circuits is not affected when a single circuit fails.

3. A combination switch for a vacuum power distribution device for mining according to claim 1, characterized in that: The driving mechanism comprises a servo reduction motor, a lead screw and a ball screw nut; The lead screw is rotatably arranged on the metal bottom plate of the electric trolley; The servo reduction motor is fixedly arranged on the metal frame of the electric trolley and is transmission-connected to one end of the lead screw; The lead screw is matched with the ball screw nut.

4. A combination switch for a vacuum power distribution device for mining according to claim 3, characterized in that: The other end of the lead screw is connected with a manual tool.

5. A combination switch for a vacuum power distribution device for mining according to claim 3, characterized in that: The servo reduction motor is preferably a synchronous motor and is electrically connected to a PLC controller arranged in the intrinsically safe cavity.

6. A combination switch for a vacuum power distribution device for mining according to claim 1, characterized in that: A side door is installed on the main cavity, and a mechanical locking structure is provided between the side door and the cover plate of the auxiliary cavity.

7. A combination switch for a vacuum power distribution device for mining according to claim 1, characterized in that: Each of the vacuum circuit breakers has six circuit breaker moving contacts, and each group of circuit breaker moving contacts and the static terminal terminals are located in the same plane.

8. A combination switch for a vacuum power distribution device for mining according to claim 1, characterized in that: A video camera is installed in the main cavity to monitor the plugging and unplugging process of the moving contact and the static terminal of the circuit breaker.

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