CN109859982B - Combined explosion-proof switch of mining vacuum electromagnetic starter - Google Patents
Combined explosion-proof switch of mining vacuum electromagnetic starter Download PDFInfo
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- CN109859982B CN109859982B CN201910145523.8A CN201910145523A CN109859982B CN 109859982 B CN109859982 B CN 109859982B CN 201910145523 A CN201910145523 A CN 201910145523A CN 109859982 B CN109859982 B CN 109859982B
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Abstract
The invention discloses a combined explosion-proof switch of a mining vacuum electromagnetic starter, wherein a plurality of vacuum contactors are arranged in a main cavity, an electrical insulating plate is arranged behind the main cavity, a static contact matched with a moving contact of the vacuum contactors is arranged on the electrical insulating plate, the static contact on the other side of the electrical insulating plate is used for connecting an incoming line and an outgoing line on a power supply side and a load side, and the vacuum contactors can move back and forth under the driving of a moving mechanism; the electrician insulating plate is connected with the fixed contacts of the same phase of the vacuum contactor in parallel through a copper strip respectively, the copper strip is connected with a vacuum isolation reversing switch arranged in an isolation cavity in series respectively, a PLC controller and an intrinsically safe communication interface which are connected are arranged in the intrinsically safe cavity, and the PLC controller can control the action of the moving mechanism. The invention can simultaneously control a plurality of motors, is provided with double isolation fractures, can realize automatic and intelligent operation, and is suitable for a control system of automatic unattended tunneling equipment in a coal mine.
Description
Technical Field
The invention relates to the technical field of high, medium and low voltage switches in a control system of coal mine explosion-proof automatic unattended tunneling equipment, in particular to a combined explosion-proof switch of a mine vacuum electromagnetic starter.
Background
In the existing coal mine explosion-proof equipment control system, a high-voltage, a medium-voltage and a low-voltage explosion-proof switch are generally vacuum electromagnetic starters which are composed of an explosion-proof shell provided with a vacuum contactor and an isolation reversing switch, and only one motor can be controlled. And the connection of each conductive point is realized by using braided wires to complete the conductive function. Therefore, too much resistance of the connecting point of the whole switch is increased, the temperature rise inside the switch is too high, and the service life of the switch is greatly reduced. And the large size and the disordered layout of the explosion-proof shell bring inconvenience to maintenance and the like. Only one isolation fracture exists, and potential safety hazards exist.
Disclosure of Invention
The invention aims to provide a combined explosion-proof switch of a mining vacuum electromagnetic starter, which has higher safety and wider application range and solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a combined explosion-proof switch of a mining vacuum electromagnetic starter, which comprises an explosion-proof shell, wherein the explosion-proof shell is divided into a main cavity, an isolation cavity and an intrinsic safety cavity, a plurality of vacuum contactors are arranged in the main cavity, the vacuum contactors are arranged in parallel in a sliding manner, an explosion-proof door is hinged to the front of the main cavity, an electrician insulating plate is arranged behind the main cavity, a plurality of static contacts matched with moving contacts of the vacuum contactors are arranged on the electrician insulating plate, the static contacts on the other side of the electrician insulating plate are used for connecting incoming and outgoing lines on a power supply side and a load side, and the vacuum contactors can move back and forth under the driving of a moving mechanism; the electrical insulating plate is connected with the fixed contacts of the same phase of the vacuum contactor in parallel through a copper strip, one end of the copper strip is connected with a vacuum isolation reversing switch arranged in the isolation cavity in series, a PLC controller and an intrinsic safety communication interface which are connected are arranged in the intrinsic safety cavity, and the PLC controller can control the movement of the moving mechanism.
Preferably, the main cavity, the isolation cavity and the intrinsic safety cavity are separated by a metal support plate, and the vacuum contactors are separated by epoxy insulating partition plates.
Preferably, the moving mechanism comprises a speed reduction motor, a lead screw and a ball screw, the lead screw is rotatably arranged on the metal supporting plate, the speed reduction motor is fixedly arranged on the metal supporting plate and is in transmission connection with one end of the lead screw, the ball screw is fixedly connected with the vacuum contactor through a moving plate, and the ball screw is matched with the lead screw.
Preferably, the other end of the lead screw is connected with a manual tool.
Preferably, the speed reducing motor is a synchronous motor and is electrically connected with the PLC controller.
Preferably, a travel switch is arranged on the metal supporting plate on one side of the moving plate.
Preferably, the moving plate is hinged with a buckle.
Preferably, a sliding rail is arranged between the main cavity and the vacuum contactor.
Preferably, each vacuum contactor has six moving contacts, and the fixed contacts are all in the same plane.
Preferably, the vacuum isolation reversing switch is provided with an isolation fracture, and an observation window for observing the isolation fracture is arranged on the isolation cavity.
Compared with the prior art, the invention has the following technical effects:
the invention forms a multi-loop by installing a plurality of vacuum contactors in an explosion-proof shell, and can control a plurality of motors simultaneously; the vacuum isolating reversing switch is provided with the double isolating fractures, the first stage is the position where the vacuum isolating reversing switch is driven to be isolated, and the second stage is the separation of the moving contact and the static contact, so that the maintenance of equipment is facilitated and the safety performance is improved; the invention is also provided with a moving mechanism for respectively controlling the on-off of the moving contact and the static contact of the vacuum contactor, and the action of the moving mechanism is controlled by the PLC controller, so that the automatic and intelligent operation can be realized, and the invention can be suitable for the control system of the automatic unattended tunneling equipment for the coal mine.
The combined explosion-proof switch of the mining vacuum electromagnetic starter has the advantages of wide application range, simple structure, reliable performance and low cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of a combined explosion-proof switch of a mining vacuum electromagnetic starter;
FIG. 2 is a schematic front view of a main chamber according to the present invention;
FIG. 3 is a schematic view of the back side of the main chamber according to the present invention;
FIG. 4 is a partial schematic view of a main chamber according to the present invention;
FIG. 5 is a schematic view of a part of the structure of the main chamber in the present invention;
FIG. 6 is a third schematic view of a part of the main chamber according to the present invention;
FIG. 7 is a fourth schematic view of a portion of the main chamber of the present invention;
wherein: the device comprises a main cavity, a 2-isolation cavity, a 3-intrinsic safety cavity, a 4-vacuum contactor, a 5-electrical insulating plate, a 6-static contact, a 7-copper strip, an 8-vacuum isolation reversing switch, a 9-epoxy insulating partition plate, a 10-speed reducing motor, a 11-lead screw, a 12-moving plate, a 13-travel switch, a 14-handle and a 15-sliding track.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1-7: the embodiment provides a mining vacuum electromagnetic starter combination explosion-proof switch, including explosion-proof housing, explosion-proof housing passes through the metal support plate to be separated for main cavity 1, keeps apart chamber 2 and this ampere of chamber 3 setting in main cavity 1 top.
Be equipped with four vacuum contactor 4 in the main cavity 1, a plurality of vacuum contactor 4 slides side by side and sets up, is equipped with slip track 15 between main cavity 1 and the vacuum contactor 4, separates through epoxy insulation baffle 9 between the vacuum contactor 4. The front of main cavity 1 articulates there is the explosion vent, and the back of main cavity 1 is equipped with an electrician's insulation board 5, and every vacuum contactor 4's moving contact is six, is equipped with twenty four static contacts 6 with vacuum contactor 4's moving contact matched with on the electrician's insulation board 5, and six static contacts 6 (female head) on the electrician's insulation board 5 are used for forming the electrically conductive return circuit with six moving contacts (public head) on the vacuum contactor 4 to inserting, have formed the second when separately and have kept apart the fracture. The vacuum contactor 4 is driven to move back and forth by a moving mechanism.
The static contacts 6 on two sides of the electrical insulating plate 5 are respectively in the same plane. The static contact 6 on the other side of the electrical insulating plate 5 is used for connecting an incoming line and an outgoing line on a power supply side and a load side, the static contacts 6 connected with the same phase of the vacuum contactor 4 on the electrical insulating plate 5 are respectively connected in parallel through a copper strip 7, one end of the copper strip 7 is respectively connected in series with a vacuum isolation reversing switch 8 arranged in the isolation cavity 2, and a cable on the power supply side is connected with the static contacts 6 after passing through the isolation reversing switch 8. The vacuum isolation reversing switch 8 is provided with an obvious isolation fracture, and the isolation cavity 2 is provided with an observation window for observing the isolation fracture. The vacuum isolation reversing switch 8 is used for the previous-stage protection of the intelligent vacuum contactor 4, the safety and the convenience of the maintenance of the intelligent vacuum contactor 4, other elements and switches are protected, and a first isolation fracture can be formed when the vacuum isolation reversing switch 8 is driven to an isolation position.
The intrinsic safety cavity 3 is internally provided with a PLC controller and an intrinsic safety communication interface which are connected, the PLC controller can communicate with the upper-level controller through the intrinsic safety communication interface, and the PLC controller can control the action of the moving mechanism.
Specifically, the moving mechanism includes a reduction motor 10, a lead screw 11, and a ball screw, the lead screw 11 is rotatably disposed on the metal support plate, and the ball screw is matched with the lead screw 11. The speed reducing motor 10 is preferably a synchronous motor, the speed reducing motor 10 is fixedly arranged on the metal supporting plate and is in transmission connection with one end of the lead screw 11, and the other end of the lead screw 11 is connected with a manual tool for driving the vacuum contactor 4 to move back and forth, so that electric and manual integrated operation is realized. The ball screw is fixedly connected with the vacuum contactor 4 through the moving plate 12, and the rotation of the speed reducing motor 10 is converted into the movement of the ball screw through the screw 11, so that the vacuum contactor 4 can be driven to move back and forth. The moving plate 12 is also hinged with a catch 14 for fixing the vacuum contactor 4. Two travel switches 13 are arranged on a metal supporting plate on one side of the moving plate 12, and the moving plate 12 can trigger the travel switches 13 and is used for feeding back an in-place signal of the vacuum contactor 4 to the PLC to control the speed reducing motor 10 to stop.
The main difference of the combined explosion-proof switch of the mining vacuum electromagnetic starter of the embodiment from the traditional high, medium and low voltage explosion-proof switch in the use method is as follows: the moving contact of the vacuum contactor 4 of the embodiment can be separated from or closed on the fixed contact 6 on the electrical insulating plate 5 under the driving of the moving mechanism, and the separation or the closing is controlled by the PLC, so that the controllability is realized, and the intelligent automation can be realized; in addition, a plurality of vacuum contactors 4 are arranged in one explosion-proof shell to form a multi-loop, and a plurality of motors can be controlled simultaneously, so that the mining vacuum electromagnetic starter combined explosion-proof switch can be applied to a control system of automatic unattended tunneling equipment in a coal mine.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The utility model provides a mining vacuum electromagnetic starter combination explosion-proof switch which characterized in that: the explosion-proof device comprises an explosion-proof shell, wherein the explosion-proof shell is divided into a main cavity, an isolation cavity and an intrinsic safety cavity, the isolation cavity and the intrinsic safety cavity are arranged above the main cavity, a plurality of vacuum contactors are arranged in the main cavity, the vacuum contactors are arranged in parallel in a sliding mode, an explosion-proof door is hinged to the front of the main cavity, an electrician insulating plate is arranged behind the main cavity, a plurality of static contacts matched with moving contacts of the vacuum contactors are arranged on the electrician insulating plate, the static contacts on the other side of the electrician insulating plate are used for connecting incoming and outgoing lines on a power supply side and a load side, and the vacuum contactors can move back and forth under the driving of a moving; the electrical insulating plate is connected with the fixed contacts of the same phase of the vacuum contactor in parallel through a copper strip, one end of the copper strip is connected with a vacuum isolation reversing switch arranged in the isolation cavity in series, a PLC controller and an intrinsic safety communication interface which are connected are arranged in the intrinsic safety cavity, and the PLC controller can control the movement of the moving mechanism.
2. The mining vacuum electromagnetic starter combined explosion-proof switch according to claim 1, characterized in that: the main cavity, keep apart the chamber with separate through the metal backup pad between the ann chamber, separate through epoxy insulation baffle between the vacuum contactor.
3. The mining vacuum electromagnetic starter combined explosion-proof switch according to claim 2, characterized in that: the moving mechanism comprises a speed reducing motor, a lead screw and a ball screw, the lead screw is rotatably arranged on the metal supporting plate, the speed reducing motor is fixedly arranged on the metal supporting plate and is in transmission connection with one end of the lead screw, the ball screw is fixedly connected with the vacuum contactor through a moving plate, and the ball screw is matched with the lead screw.
4. The mining vacuum electromagnetic starter combined explosion-proof switch according to claim 3, characterized in that: the other end of the lead screw is connected with a manual tool.
5. The mining vacuum electromagnetic starter combined explosion-proof switch according to claim 3, characterized in that: the speed reducing motor is a synchronous motor and is electrically connected with the PLC.
6. The mining vacuum electromagnetic starter combined explosion-proof switch according to claim 3, characterized in that: and a travel switch is arranged on the metal supporting plate on one side of the moving plate.
7. The mining vacuum electromagnetic starter combined explosion-proof switch according to claim 3, characterized in that: the moving plate is hinged with a buckle.
8. The mining vacuum electromagnetic starter combined explosion-proof switch according to claim 1, characterized in that: and a sliding track is arranged between the main cavity and the vacuum contactor.
9. The mining vacuum electromagnetic starter combined explosion-proof switch according to claim 1, characterized in that: the vacuum contactor comprises six movable contacts and the fixed contacts are all in the same plane.
10. The mining vacuum electromagnetic starter combined explosion-proof switch according to claim 1, characterized in that: the vacuum isolation reversing switch is provided with an isolation fracture, and an observation window for observing the isolation fracture is arranged on the isolation cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145523.8A CN109859982B (en) | 2019-02-27 | 2019-02-27 | Combined explosion-proof switch of mining vacuum electromagnetic starter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145523.8A CN109859982B (en) | 2019-02-27 | 2019-02-27 | Combined explosion-proof switch of mining vacuum electromagnetic starter |
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| Publication Number | Publication Date |
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| CN109859982A CN109859982A (en) | 2019-06-07 |
| CN109859982B true CN109859982B (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910145523.8A Active CN109859982B (en) | 2019-02-27 | 2019-02-27 | Combined explosion-proof switch of mining vacuum electromagnetic starter |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571095B (en) * | 2019-09-22 | 2024-04-26 | 甘肃容和矿用设备集团有限公司 | Isolated reversing switch door electric interlocking mechanism |
| CN110957175B (en) * | 2019-12-12 | 2021-10-22 | 中煤张家口煤矿机械有限责任公司 | Quick-insertion type mounting mechanism and mounting method for mining switch vacuum contactor module |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203522585U (en) * | 2013-10-09 | 2014-04-02 | 合肥开关厂有限公司 | Explosion-proof and intrinsically safe multiloop high-voltage vacuum electromagnetic starter for mining use |
| KR101680965B1 (en) * | 2015-04-20 | 2016-11-30 | 엘에스산전 주식회사 | Front cover assembly of fuse combination vacuum contactor |
| CN207425704U (en) * | 2017-09-21 | 2018-05-29 | 江苏南瑞帕威尔电气有限公司 | SF on column6On-load switch |
| CN207800414U (en) * | 2018-01-31 | 2018-08-31 | 徐州矿务集团有限公司 | The high mine explosion-suppression vacuum electromagnetic starting device of safety coefficient |
| CN208922933U (en) * | 2019-02-27 | 2019-05-31 | 安徽宇腾真空电气有限责任公司 | A kind of mine vacuum electromagnetic starters combination flame-proof switch |
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