阅读说明：本技术 一种采煤机过位反牵引系统 (Coal mining machine over-position reverse traction system ) 是由 庄明 田明 张建鹏 王友峰 李峰 樊卫阁 秦其智 张强 于 2020-12-03 设计创作，主要内容包括：本发明提供的一种采煤机过位反牵引系统,该系统包括强磁铁、控制电路、采煤机面板；强磁铁,固定安装在矿井工作面溜尾的刮板输送机挡板上；控制电路,安装有磁感应开关,磁感应开关固定安装在采煤机机身上；强磁铁位置与磁感应开关位置在同一水平线；磁感应开关靠近强磁铁时,磁感应开关闭合,控制电路发出反牵引信号；采煤机面板,与控制电路电连接,用于接收反牵引信号,并根据反牵引信号控制采煤机进行反牵引作业。该系统能够使采煤机在切割端头时自动完成反牵引作业,提高了工作效率高,降低了设备故障率。(The invention provides an over-position anti-traction system of a coal mining machine, which comprises a strong magnet, a control circuit and a coal mining machine panel; the strong magnet is fixedly arranged on a baffle plate of the scraper conveyor at the tail of the mine working face; the control circuit is provided with a magnetic induction switch which is fixedly arranged on the body of the coal mining machine; the position of the strong magnet and the position of the magnetic induction switch are on the same horizontal line; when the magnetic induction switch is close to the strong magnet, the magnetic induction switch is closed, and the control circuit sends out an anti-traction signal; and the coal mining machine panel is electrically connected with the control circuit and is used for receiving the reverse traction signal and controlling the coal mining machine to perform reverse traction operation according to the reverse traction signal. The system can enable the coal mining machine to automatically complete the anti-traction operation when cutting the end, improves the working efficiency and reduces the equipment failure rate.)

1. The utility model provides a coal-winning machine anti-traction system that crosses, its characterized in that, coal-winning machine crosses anti-traction system that crosses includes: the device comprises a strong magnet (1), a control circuit and a coal mining machine panel;

the strong magnet (1) is fixedly arranged on a baffle plate (3) of the scraper conveyor at the tail of the mine working face;

the control circuit is provided with a magnetic induction switch (2), and the magnetic induction switch (2) is fixedly arranged on the coal mining machine body (4);

the position of the strong magnet (1) and the position of the magnetic induction switch (2) are on the same horizontal line;

when the magnetic induction switch (2) is close to the strong magnet (1), the magnetic induction switch (2) is closed, and the control circuit sends out an anti-traction signal;

the coal mining machine panel is electrically connected with the control circuit and used for receiving the anti-traction signal and controlling the coal mining machine to perform anti-traction operation according to the anti-traction signal.

2. The coal mining machine over-position anti-traction system according to claim 1, characterized in that a magnetic induction probe (21) is fixedly mounted on the magnetic induction switch (2), and the magnetic induction probe (21) is used for receiving a strong magnetic signal sent by the strong magnet (1) and controlling the magnetic induction switch (2) to be closed when the magnetic induction switch (2) is close to the strong magnet (1).

3. The over-position anti-traction system of the coal mining machine according to claim 1 or 2, characterized in that a fixing frame (5) is fixedly installed on the baffle plate (3) of the scraper conveyor, and the fixing frame (5) is used for fixedly installing the strong magnet (1).

4. The shearer over-position anti-traction system as claimed in claim 1 or 2, wherein the shearer panel is further configured to issue an alert signal in accordance with the anti-traction signal.

Technical Field

The invention belongs to the technical field of coal mine safety, and particularly relates to an over-position reverse traction system of a coal mining machine.

Background

The coal mining machine is one of important devices for realizing mechanization and modernization of coal mine production. The mechanical coal mining can reduce the physical labor and improve the safety, and the purposes of high yield, high efficiency and low consumption are achieved.

During the stoping period of the mine working face, when the coal mining machine cuts coal towards the tail, the risk that the tail sliding cable is cut and damaged by the coal mining machine due to the fact that the coal mining machine is dragged to be over-positioned exists. Therefore, when a driver of the coal mining machine operates the cutting end of the coal mining machine, the speed of the coal mining machine must be slowed down, when the driver finds that the roller cuts the end, the coal mining machine must be immediately reversely pulled, the operation is troublesome, and the reverse traction node is difficult to master.

Therefore, there is a need for an over-position anti-traction system for a coal mining machine, which can intelligently control the anti-traction of the coal mining machine when the coal mining machine penetrates through the end of the barrel.

Disclosure of Invention

The invention provides an over-position reverse traction system of a coal mining machine, which is used for solving the technical problem that a reverse traction node of the coal mining machine is difficult to master.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a coal-winning machine is anti-traction system of dislocation, the coal-winning machine is anti-traction system of dislocation includes: strong magnet, control circuit, coal mining machine panel;

the strong magnet is fixedly arranged on a baffle plate of the scraper conveyor at the tail of the mine working face;

the control circuit is provided with a magnetic induction switch which is fixedly arranged on the body of the coal mining machine;

the position of the strong magnet and the position of the magnetic induction switch are on the same horizontal line;

when the magnetic induction switch is close to the strong magnet, the magnetic induction switch is closed, and the control circuit sends out an anti-traction signal;

the coal mining machine panel is electrically connected with the control circuit and used for receiving the anti-traction signal and controlling the coal mining machine to perform anti-traction operation according to the anti-traction signal. .

Preferably, last fixed mounting of magnetic induction switch has the magnetic induction probe, the magnetic induction probe is used for the magnetic induction switch is close to during the strong magnet, receive the strong magnetic signal that the strong magnet sent, control the magnetic induction switch is closed.

Preferably, a fixing frame is fixedly installed on the baffle plate of the scraper conveyor, and the fixing frame is used for fixedly installing the strong magnet.

Preferably, the shearer panel is further configured to issue a reminder signal in accordance with the anti-tow signal.

Based on the above embodiment, the embodiment of the invention provides an over-position reverse traction system of a coal mining machine. The system comprises a strong magnet, a control circuit and a coal mining machine panel; the strong magnet is fixedly arranged on a baffle plate of the scraper conveyor at the tail of the mine working face; the control circuit is provided with a magnetic induction switch which is fixedly arranged on the body of the coal mining machine; the position of the strong magnet and the position of the magnetic induction switch are on the same horizontal line; when the magnetic induction switch is close to the strong magnet, the magnetic induction switch is closed, and the control circuit sends out an anti-traction signal; the coal mining machine panel is electrically connected with the control circuit and used for receiving the anti-traction signal and controlling the coal mining machine to perform anti-traction operation according to the anti-traction signal. The strong magnet is installed on the baffle plate of the scraper conveyor, the magnetic induction switch is installed on the body of the coal mining machine, when the magnetic induction switch is close to the strong magnet, the magnetic induction switch is closed under the action of the strong magnet, the control circuit sends out a reverse traction signal when the magnetic induction switch is closed, and the control panel controls the coal mining machine to automatically complete reverse traction operation according to the reverse traction signal. The system enables the coal mining machine to automatically complete the anti-traction operation when the end head is cut by the tail slipping of the mine working face, has the characteristics of short reaction time, simplicity in operation and accuracy in mastering of anti-traction nodes, improves the production efficiency and reduces the equipment failure rate.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic composition diagram of an over-position anti-traction system of a coal mining machine according to an embodiment of the present invention.

Description of reference numerals:

1-strong magnet, 2-magnetic induction switch, 3-scraper conveyor baffle, 4-coal cutter body, 5-fixing frame and 21-magnetic induction probe.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 is a schematic composition diagram of an over-position anti-traction system of a coal mining machine according to an embodiment of the present invention, and the over-position anti-traction system of the coal mining machine according to the embodiment of the present invention is described in detail below with reference to fig. 1. A

As shown in fig. 1, the coal mining machine over-position reverse traction system comprises: the strong magnet-type coal mining machine comprises a strong magnet 1, a control circuit and a coal mining machine panel, wherein the control circuit is provided with a magnetic induction switch 2.

Specifically, the strong magnet 1 is fixedly arranged on a baffle 3 of the scraper conveyor at the tail of the mine working face. Because the strong magnet 1 needs to be installed on the baffle 3 of the scraper conveyor in a protruding manner, the embodiment of the application provides an optimal implementation mode, the fixing frame 5 is fixedly installed on the baffle 3 of the scraper conveyor, the fixing frame 5 is in a T shape, one part of the fixing frame 5 is fixed on the baffle 3 of the scraper conveyor, the other part of the fixing frame 5 protrudes out of the baffle 3 of the scraper conveyor, and the strong magnet 1 is fixedly installed on the part of the fixing frame 5 protruding out of the baffle 3 of the scraper conveyor.

The control circuit is provided with a magnetic induction switch 2, and the magnetic induction switch 2 is fixedly arranged on a coal mining machine body 4. The control circuit is a conventional control circuit in the prior art and consists of a power supply loop, a button switch, a protection switch, a relay coil and auxiliary contacts thereof. The magnetic induction switch 2 of the control circuit is fixedly arranged on the coal mining machine body 4, so that the movement of the magnetic induction switch 2 is synchronous with that of the coal mining machine, and the position of the magnetic induction switch 2 can reflect the position of a roller of the coal mining machine laterally.

The position of the strong magnet 1 and the position of the magnetic induction switch 2 are on the same horizontal line. Guarantee that strong magnet 1 position and magnetic induction switch 2 position are in same water flat line so that strong magnet 1 and magnetic induction switch 2 can be close to on the horizontal direction, and both distances can influence magnetic induction's efficiency and accuracy too far away.

When the magnetic induction switch 2 is close to the strong magnet 1, the magnetic induction switch 2 is closed, and the control circuit sends out a reverse traction signal. Magnetic induction switch 2 constantly is close to the scraper conveyor baffle 3 of mine working face swift current tail when the coal-winning machine, and magnetic induction switch 2 can constantly be close to the strong magnet 1 of fixing on the scraper conveyor baffle 3 of mine working face swift current tail, and when magnetic induction switch 2 was close to strong magnet 1, magnetic induction switch 2 was closed under strong magnet 1's effect. By adjusting the position of the magnetic induction switch 2 and the position of the strong magnet 1, the roller of the coal mining machine just cuts through the end of the working surface when the magnetic induction switch 2 is closed. The magnetic induction switch 2 is closed to enable a control circuit where the magnetic induction switch is located to be switched on, the control circuit is closed, and then an anti-traction signal is sent to a panel of the coal mining machine. For magnetic induction switch 2 can be fast accurate when being close to strong magnet 1 sense the magnetic field effect of strong magnet 1, this application embodiment provides an optimal implementation mode, and fixed mounting has magnetic induction probe 21 on the magnetic induction switch 2 again, and magnetic induction probe 21 is used for magnetic induction switch 2 when being close to strong magnet 1, receives the strong magnetic signal that strong magnet 1 sent, and control magnetic induction switch 2 is closed.

And the coal mining machine panel is electrically connected with the control circuit and is used for receiving the reverse traction signal and controlling the coal mining machine to perform reverse traction operation according to the reverse traction signal. The coal mining machine panel is arranged in the coal mining machine operation room and can be combined with the existing control panel of the coal mining machine, so that the operation of operators is facilitated. And the panel of the coal mining machine receives the reverse traction signal sent by the control circuit, and then controls the coal mining machine to perform reverse traction operation according to the reverse traction signal to finish reverse traction operation. As a preferred implementation of the embodiment of the present application, the shearer panel is further configured to send out a warning signal according to the anti-traction signal. The panel of the coal mining machine is configured to send out a reminding signal according to the anti-traction signal, so that the coal mining machine starts to perform anti-traction operation, and an operator can obtain a signal for starting to perform the anti-traction operation, and then the operator can supervise the performance of the anti-traction operation, and the operation safety is ensured.

In addition, as shown in fig. 1, concentric circles in the figure schematically show a connecting shaft of a coal machine body and a rocker arm, and circles with teeth schematically show a cutting drum and a cutting pick, in order to show the relative positions of the strong magnets 1 installed.

The embodiments in this specification are described in a progressive manner. The same and similar parts among the various embodiments can be mutually referred, and each embodiment focuses on the differences from the other embodiments.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It should be noted that, unless otherwise specified and limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, mechanically or electrically connected, or may be communicated between two elements, directly or indirectly through an intermediate medium, and specific meanings of the terms may be understood by those skilled in the relevant art according to specific situations. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a circuit structure, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, the presence of an element identified by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or device comprising the element.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.