阅读说明：本技术 一种矿用隔爆兼本质安全型多回路真空电磁起动器 (Mining explosion-proof and intrinsically safe multi-loop vacuum electromagnetic starter ) 是由 李友亮 于 2019-08-28 设计创作，主要内容包括：本发明公开一种高精度以及维护更加方便的矿用隔爆兼本质安全型多回路真空电磁起动器。采用的技术方案包括：隔爆箱体,设有独立隔爆间隔的进线腔、出线腔、变压器腔和功率单元安装腔,所述功率单元安装腔通过绝缘板隔成有功率单元安装腔前腔和功率单元安装腔后腔,所述功率单元安装腔前腔后端通过绝缘板设有一组插套、重载插座,所述插套后端与设在所述功率单元安装腔后腔内的接线铜排连接,所述重载插座后端与设在所述功率单元安装腔后腔内的导线连接；功率单元模块,主要由壳体和设在壳体内的电气元器件组成,所述壳体底部设有一组并排设置的导向轮,所述电气元器件通过接线排、导线分别与设在所述壳体背面的柱状触头、重载插头连接,所述功率单元模块通过柱状触头、重载插头分别与所述插套、重载插座插接配合。(The invention discloses a mining explosion-proof and intrinsically safe multi-loop vacuum electromagnetic starter which is high in precision and more convenient to maintain. The technical scheme adopted comprises the following steps: the power unit installation cavity is divided into a power unit installation cavity front cavity and a power unit installation cavity rear cavity through an insulation board, the rear end of the power unit installation cavity front cavity is provided with a group of plug bushes and heavy-load sockets through the insulation board, the rear end of each plug bush is connected with a wiring copper bar arranged in the power unit installation cavity rear cavity, and the rear end of each heavy-load socket is connected with a wire arranged in the power unit installation cavity rear cavity; the power unit module mainly comprises a shell and an electric component arranged in the shell, wherein a group of guide wheels arranged side by side are arranged at the bottom of the shell, the electric component is connected with a columnar contact and a heavy-load plug at the back of the shell through a wiring bar and a wire respectively, and the power unit module is matched with the plug bush and the heavy-load socket in a plugging mode through the columnar contact and the heavy-load plug respectively.)

1. A mining flame-proof and intrinsically safe multi-loop vacuum electromagnetic starter is characterized by comprising:

the explosion-proof box body (1) is provided with an independent explosion-proof spaced wire inlet cavity (101), a wire outlet cavity (102), a transformer cavity (103) and a power unit installation cavity (104), the power unit installation cavity (104) is partitioned into a power unit installation cavity front cavity (108) and a power unit installation cavity rear cavity (109) through an insulation plate (107), the rear end of the power unit installation cavity front cavity (108) is provided with a group of plug bushes (106) and a heavy-load socket (110) through the insulation plate (107), the rear end of each plug bush (106) is connected with a wiring copper bar (105) arranged in the power unit installation cavity rear cavity (109), and the rear end of each heavy-load socket (110) is connected with a wire arranged in the power unit installation cavity rear cavity (109);

the power unit module (2) mainly comprises a shell (201) and an electric component (202) arranged in the shell (201), a group of guide wheels (303) arranged side by side are arranged at the bottom of the shell (201), the electric component (202) is respectively connected with a columnar contact (203) and a heavy-load plug (206) which are arranged on the back of the shell (201) through a wiring bar and a wire, and the power unit module (2) is respectively in plug-in fit with the plug bush (106) and the heavy-load socket (110) through the columnar contact (203) and the heavy-load plug (206);

the pushing device (3) mainly comprises a bottom plate (301), a guide rail (302), a screw rod (304) and a sliding block (305), wherein the guide rail (302) is arranged at the rear end of the bottom plate (301) and is matched with a guide wheel (303) of the power unit module (2), the sliding block (305) is arranged at the bottom of the bottom plate (301), and the sliding block (305) and the power unit module (2) are rotationally driven by the screw rod (304) to move back and forth, so that the columnar contact (203) and the heavy-load plug (206) are respectively contacted with or separated from the plug bush (106) and the heavy-load socket (110).

2. The mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter according to claim 1, characterized in that: sliding grooves (308) are formed in two sides of the front end of the bottom plate (301), a buckling plate (309) is arranged on each sliding groove (308), one end of each buckling plate (309) is rotatably connected with the corresponding sliding block (305) through a connecting piece (314), a buckling part (313) is arranged on each buckling plate (309), and the front end of the bottom of each power unit module (2) is arranged on a corresponding clamping plate (311); when the power unit module is installed, the buckle plate (309) is separated towards the left side and the right side respectively by taking the connecting piece (314) as a fulcrum, and then the power unit module (2) is put in, so that the guide wheel (303) at the bottom of the power unit module (2) is in guide fit with the guide rail (302) on the bottom plate (301); when a clamping plate (311) at the bottom of the power unit module (2) is in contact with a connecting piece (314) on a buckling plate (309), the buckling plate (309) is pulled back to the middle respectively, and a buckling part (313) arranged on the buckling plate (309) clamps the rear end of the clamping plate (311); and finally, the screw rod (304) rotates to drive the sliding block (305), the buckle plate (309) and the power unit module (2) clamped on the sliding block to move back and forth.

3. The mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter according to claim 2, characterized in that: the clamping plate (311) is provided with a buckling groove (312), a gap (318) is reserved between the connecting piece (314) and the buckling plate (309), and when the clamping plate (311) is in contact with the connecting piece (314) at the front end of the buckling plate (309), the connecting piece (314) is clamped in the buckling groove (312).

4. The mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter according to claim 2, characterized in that: the front end of the sliding groove (308) is provided with an arc-shaped guide groove (310), and the bottom of the buckling part (313) is matched with the arc-shaped guide groove (310) in a guiding manner.

5. The mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter according to claim 2, characterized in that: the buckling part (313) is a first bolt, and the connecting piece (314) is a second bolt.

6. The mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter according to claim 2, characterized in that: and a third bolt (317) is arranged at the other end of the buckle plate (309).

7. The mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter according to claim 1, characterized in that: the upper end and/or the front end of the shell (201) of the power unit module (2) is/are provided with a handle (204).

8. The mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter according to claim 1, characterized in that: the guide wheel (303) is a concave bearing, and flanges (3201) matched with the concave bearing are arranged on two sides of the guide rail (302).

9. The mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter according to claim 1, characterized in that: the sliding block (305) is slidably arranged at the bottom of the bottom plate (301) through two guide posts (306), and two ends of each guide post (306) are fixed at the bottom of the bottom plate (301) through fixing blocks (307).

10. The mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter according to claim 1, characterized in that: the front end of the screw rod (304) is connected with the rotating shaft (315), and the rear end is connected with the motor (316).

Technical Field

The invention relates to a mining explosion-proof and intrinsically safe multi-loop vacuum electromagnetic starter.

Background

The mining explosion-proof and intrinsically safe multi-loop vacuum electromagnetic starter is an explosion-proof combined switch commonly used in mines, is mainly used for controlling and protecting a motor, and is an important electrical equipment in the mining industry. The traditional structure has the following defects: the vacuum contacts adopted by each loop are connected by conductive belts, so that the installation and the replacement are complicated, and the maintenance is inconvenient.

In order to solve the problems, some combination switches with drawer type structures appear in the market at present, but the situations of inaccurate positioning and poor contact can occur after long-time use. In order to solve the problem, the invention discloses a mine explosion-proof and safety multi-loop vacuum electromagnetic starter drawer type combined box which is mainly realized by strengthening the strength of a shell and changing the structural mode of a contact, and the invention is a Chinese invention patent with the application publication number of CN 104426089A. The duckbill socket can be plugged in a larger error range, but the contact performance of the duckbill socket is far lower than that of the traditional plug bush structure. And no matter which drawer type combination switch, its power unit module's integration degree is lower, and the dismouting is comparatively inconvenient, and can not get the whole dress of power unit module, can only maintain in the drawer, brings inconvenience for the maintenance.

Disclosure of Invention

The invention aims to solve the technical problem of providing a mining explosion-proof and intrinsic safety type multi-loop vacuum electromagnetic starter which is high in precision and more convenient to maintain.

In order to solve the above problems, the technical scheme adopted by the invention comprises:

the power unit installation cavity is divided into a power unit installation cavity front cavity and a power unit installation cavity rear cavity through an insulation board, the rear end of the power unit installation cavity front cavity is provided with a group of plug bushes and heavy-load sockets through the insulation board, the rear end of each plug bush is connected with a wiring copper bar arranged in the power unit installation cavity rear cavity, and the rear end of each heavy-load socket is connected with a wire arranged in the power unit installation cavity rear cavity;

the power unit module mainly comprises a shell and an electric component arranged in the shell, wherein a group of guide wheels arranged side by side are arranged at the bottom of the shell, the electric component is respectively connected with a columnar contact and a heavy-load plug arranged on the back of the shell through a wiring bar and a lead, and the power unit module is respectively in plug-in fit with the plug bush and the heavy-load socket through the columnar contact and the heavy-load plug;

the pushing device mainly comprises a bottom plate, a guide rail, a screw rod, a sliding block and a pushing device, wherein the guide rail is arranged at the rear end of the bottom plate, the sliding block is arranged at the bottom of the bottom plate and matched with a guide wheel of the power unit module, and the sliding block and the power unit module are driven to move back and forth through the rotation of the screw rod, so that the columnar contact and the heavy-load plug are respectively contacted with or separated from the plug bush and the heavy-load socket.

Sliding grooves are formed in two sides of the front end of the bottom plate, a buckling plate is arranged on each sliding groove, one end of each buckling plate is rotatably connected with the corresponding sliding block through a connecting piece, a buckling part is arranged on each buckling plate, and the front end of the bottom of each power unit module is arranged on the corresponding clamping plate; when the power unit module is installed, the pinch plates are separated towards the left side and the right side respectively by taking the connecting piece as a fulcrum, and then the power unit module is put in, so that a guide wheel at the bottom of the power unit module is in guide fit with a guide rail on the bottom plate; when the clamping plate at the bottom of the power unit module is in contact with the connecting piece on the clamping plate, the clamping plates are respectively pulled back to the middle, and the buckling parts arranged on the clamping plates clamp the rear ends of the clamping plates; and finally, the screw rod rotates to drive the sliding block, the pinch plate and the power unit module clamped on the sliding block to move back and forth.

The mining explosion-proof and intrinsically safe multi-loop vacuum electromagnetic starter is characterized in that: the clamping plate is provided with a buckling groove, a gap exists between the connecting piece and the buckling plate, and when the clamping plate is in contact with the connecting piece at the front end of the buckling plate, the connecting piece is clamped into the buckling groove.

The mining explosion-proof and intrinsically safe multi-loop vacuum electromagnetic starter is characterized in that: the front end of the sliding groove is provided with an arc-shaped guide groove, and the bottom of the second bolt is matched with the arc-shaped guide groove in a guiding mode.

The mining explosion-proof and intrinsically safe multi-loop vacuum electromagnetic starter is characterized in that: the buckling part is a first bolt, and the connecting piece is a second bolt.

The mining explosion-proof and intrinsically safe multi-loop vacuum electromagnetic starter is characterized in that: and the other end of the pinch plate is provided with a third bolt.

The mining explosion-proof and intrinsically safe multi-loop vacuum electromagnetic starter is characterized in that: and a handle is arranged at the upper end and/or the front end of the shell of the power unit module.

The mining explosion-proof and intrinsically safe multi-loop vacuum electromagnetic starter is characterized in that: the guide wheel is a concave bearing, and flanges matched with the concave bearing are arranged on two sides of the guide rail.

The mining explosion-proof and intrinsically safe multi-loop vacuum electromagnetic starter is characterized in that: the sliding block is slidably arranged at the bottom of the bottom plate through two guide posts, and two ends of each guide post are fixed at the bottom of the bottom plate through fixing blocks.

The mining explosion-proof and intrinsically safe multi-loop vacuum electromagnetic starter is characterized in that: the front end of the screw rod is connected with the rotating shaft, and the rear end of the screw rod is connected with the motor.

The mining explosion-proof and intrinsically safe multi-loop vacuum electromagnetic starter has the advantages that:

1. each loop adopts a power unit module, so that the installation and the replacement are simple and convenient, the modules are universal, and the delivery period is greatly shortened;

2. the main loop plug is plugged with the columnar contact of the power unit module by adopting a plug bush device, so that the contact is more stable;

3. adopt neotype pusher to carry out accurate location and removal to power unit module to ensure that the column contact can accurately insert in the plug bush device.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic structural diagram of a mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter of the invention;

FIG. 2 is a front cross-sectional view of the mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter of the present invention;

FIG. 3 is a back sectional view of the mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter of the present invention;

FIG. 4 is a side sectional view of the mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter of the present invention;

FIG. 5 is a schematic structural view of the power cell module and pusher assembly of the present invention, showing a front configuration;

FIG. 6 is a schematic diagram of the power cell module and pusher assembly of the present invention, showing the back side configuration;

FIG. 7 is a schematic structural view of the power cell module and pusher assembly of the present invention, showing a cross-sectional configuration;

FIG. 8 is a schematic diagram of a power cell module according to the present invention;

FIG. 9 is a schematic structural diagram of a pushing device according to the present invention, showing a front structure;

FIG. 10 is a schematic structural diagram of a pushing device of the present invention, showing a back structure;

FIG. 11 is a schematic structural diagram of the pushing device of the present invention, showing the changing status of the card.

Detailed Description

As shown in fig. 1 to 11, the mining flameproof and intrinsically safe multi-loop vacuum electromagnetic starter of the invention, taking 6 loops as an example, comprises a flameproof box body 1 and 6 power unit modules 2 arranged in the flameproof box body 1, wherein each power unit module 2 is controlled by a pushing device 3 to move back and forth in the flameproof box body 1.

On the installation base 4 of the explosion-proof box body 1, an independent explosion-proof interval wire inlet cavity 101, a wire outlet cavity 102, a transformer cavity 103 and a power unit installation cavity 104 are arranged, and the power unit installation cavity 104 is divided into a power unit installation cavity front cavity 108 and a power unit installation cavity rear cavity 109 through an insulation board 107. The rear end of the power unit installation cavity front cavity 108 is provided with a group of plug bushes 106 and heavy-load sockets 110 through an insulation board 107. The rear end of the plug bush 106 is connected with a wiring copper bar 105 arranged in the rear cavity 109 of the power unit installation cavity, and the rear end of the heavy-duty socket 110 is connected with a lead arranged in the rear cavity 109 of the power unit installation cavity. An external power line is connected into the wire inlet cavity 101, passes through a transformer in the transformer cavity 103, and is connected with a wiring copper bar 105 in the rear cavity 109 of the power unit installation cavity.

The power unit module 2 mainly comprises a housing 201 and an electrical component 202 arranged in the housing 201. The electric component 202 is a vacuum contactor or the like. The bottom of the shell 201 is provided with a group of guide wheels 303 arranged side by side, the electrical component 202 is respectively connected with the columnar contact 203 and the heavy-load plug 206 arranged on the back of the shell 201 through a wiring bar and a wire, the wiring mode of the wiring bar and the wire is conventional, and the description is omitted here. The power unit module 2 is respectively matched with the plug bush 106 and the heavy-duty socket 110 in a plugging way through the columnar contact 203 and the heavy-duty plug 206.

The pushing device 3 mainly comprises a bottom plate 301, a guide rail 302, a screw rod 304 and a sliding block 305. The bottom plate 301 is fixed in the power unit installation cavity front cavity 108 through screws at two ends. The guide rail 302 is arranged at the rear end of the bottom plate 301 and is matched with the guide wheel 303 of the power unit module 2, and the sliding block 305 is arranged at the bottom of the bottom plate 301 and is connected with the power unit module 2. The screw rod 304 rotates to drive the sliding block 305 and the power unit module 2 to move back and forth, so that the columnar contact 203 and the heavy-duty plug 206 are respectively contacted with or separated from the plug bush 106 and the heavy-duty socket 110. The mating of the column contact 203 and the plug bush 106 is used for the plugging of a main circuit (i.e. a high current), and the mating of the heavy duty plug 206 and the heavy duty socket 110 is used for the plugging of a control circuit.

Furthermore, the two sides of the front end of the bottom plate 301 are provided with sliding grooves 308, the sliding grooves 308 are provided with buckling plates 309, one end parts of the buckling plates 309 are rotatably connected with the sliding block 305 through connecting pieces 314, and the middle parts of the buckling plates 309 are provided with buckling parts 313. The front end of the bottom of the power unit module 2 is arranged on the clamping plate 311. The distance between the buckling part 313 and the connecting part 314 is equal to or slightly larger than the width of the clamping plate 311. When the power unit module 2 is installed, the buckle plate 309 is separated towards the left side and the right side respectively by taking the connecting piece 314 as a fulcrum, and then the power unit module 2 is put in, so that the guide wheels 303 at the bottom of the power unit module 2 are in guide fit with the guide rails 302 on the bottom plate 301. When the clamping plate 311 at the bottom of the power unit module 2 contacts with the connecting piece 314 at the front end of the buckling plate 309, the buckling plate 309 is pulled back towards the middle respectively, so that the buckling part 313 arranged on the buckling plate 309 clamps the rear end of the clamping plate 311. And finally, the screw rod 304 rotates to drive the sliding block 305, the buckle plate 309 and the power unit module 2 clamped on the sliding block to move back and forth. The connecting member 314 and the fastening portion 313 are preferably a first bolt and a second bolt, respectively. The structure has the advantages of convenience in disassembly and assembly and accuracy in positioning.

Furthermore, a fastening groove 312 is formed in the fastening plate 311, a gap 318 is formed between the connecting member 314 and the fastening plate 309, and when the fastening plate 311 contacts the connecting member 314 at the front end of the fastening plate 309, the connecting member 314 is fastened in the fastening groove 312. So as to play a role in positioning, and make the connection between the power unit module 2 and the buckle 309 more stable, so as to facilitate the loading and unloading of the power unit module 2.

Further, an arc-shaped guide groove 310 is formed in the front end of the sliding groove 308, and the bottom of the second bolt 313 is in guiding fit with the arc-shaped guide groove 310. The buckle plate 309 can rotate more stably, so that the buckling part 313 on the buckle plate 309 can be accurately buckled into the buckling groove 312 of the clamping plate 311.

Further, the other end of the pinch plate 309 is provided with a third bolt 317. The third bolt 317 is used for the operator to grasp with his hand to facilitate the opening and closing of the pinch plate 309.

Further, handles 204 are arranged at the upper end and the front end of the shell 201 of the power unit module 2. So as to facilitate the transportation and disassembly of the power unit module 2.

Further, leading wheel 303 is concave type bearing, specifically is the concave type bearing of high accuracy, guide rail 302 both sides are equipped with flange 3201 that concave type bearing suits to ensure power unit module 2 can very smooth and easy and accurate removal, improves its wearability again simultaneously.

Further, the sliding block 305 is slidably disposed at the bottom of the bottom plate 301 through two guiding posts 306, and two ends of the guiding posts 306 are fixed at the bottom of the bottom plate 301 through fixing blocks 307. So as to ensure that the sliding block 305 can move very smoothly and precisely, and finally realize that the power unit module 2 can move more smoothly and precisely.

Further, the front end of the screw rod 304 is connected with the rotating shaft 315, and the rear end of the screw rod 304 is connected with the motor 316. The shaft 315 and the lead screw 304 may be integrally formed. The motor 316 is preferably a stepping motor, and the motor 316 normally drives the slider 305 and the power unit module 2 to move back and forth, and when the power is off, the slider 305 and the power unit module 2 can be driven to move back and forth by the cooperation of the rocking handle and the rotating shaft 315.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are included in the scope of the present invention.