Wireless control device for airborne power-off instrument of driving working face unit

Abstract

The utility model belongs to the technical field of safety of coal mine tunneling equipment, and aims to solve the problems of serious hidden dangers such as incapability of normally starting a unit, explosion loss and the like caused by line breakage or extrusion damage due to power failure in a direct connection mode. The wireless control device comprises a gas sensor, a gas power-off instrument host, a remote control assembly and a unit switch, wherein the gas sensor and the gas power-off instrument host are electrically connected and are both installed on a unit, and the gas sensor is used for collecting gas concentration data of a working face; a transmitting device and a receiving device of the remote control assembly are respectively arranged in an intrinsic safety junction box, the transmitting device and the receiving device are in wireless connection, a normally open contact of the gas breaker host is connected with the transmitting device in series, and a normally closed contact of the receiving device is connected with a unit switch in series. The device can reduce the accident rate, save the accident influence time and improve the maintenance efficiency and the tunneling efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine excavation equipment safety, and in particular relates to a wireless control device for an onboard power-off instrument of an excavation working face unit. Background Art

[0002] The original onboard power-off system of the unit cuts off the power by directly connecting to the host of the unit's power-off instrument. During the production process, the line is prone to breakage or compression damage. Even after taking corresponding protective measures, the effect is still poor. It is easy for line failures to cause serious hidden dangers such as the unit's inability to start normally and explosion failure, which have a great impact on production and safety. Utility Model Content

[0003] In order to solve at least one of the above technical problems existing in the prior art, the utility model provides a wireless control device for an onboard power-off instrument of a tunneling working face unit.

[0004] The utility model is implemented by the following technical solution: a wireless control device for an onboard power-off instrument of a tunneling working face unit, comprising a gas sensor, a gas power-off instrument host, a remote control component and a unit switch; wherein the gas sensor and the gas power-off instrument host are electrically connected and both are installed on the unit, and the gas sensor is used to collect gas concentration data of the working face; the transmitting device and the receiving device of the remote control component are respectively arranged in an intrinsically safe junction box, and the transmitting device and the receiving device are wirelessly connected, the normally open contact of the gas power-off instrument host is connected in series with the transmitting device, and the normally closed contact of the receiving device is connected in series with the unit switch.

[0005] Preferably, the intrinsically safe junction box where the transmitting device is located is installed on the side of the gas power cut-off instrument host, and the intrinsically safe junction box where the receiving device is located is installed on the side of the unit switch.

[0006] Preferably, the unit switch is installed on a random switch rack of the unit bearing part.

[0007] Compared with the prior art, the beneficial effects of the present invention are:

[0008] This device utilizes a remote control component, replacing the original onboard power-off system that was directly connected to the power-off instrument host. This reduces the accident rate, saves the time it takes to recover from an accident, and improves maintenance and excavation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0010] Figure 1 Schematic diagram of the connection structure of this embodiment. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present invention are clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

[0012] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the efficacy and purpose that can be achieved by the present invention, should fall within the scope of the technical content disclosed by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0013] The utility model provides an embodiment:

[0014] like Figure 1 As shown, a wireless control device for an onboard power-off instrument of a tunneling working face unit includes a gas sensor, a gas power-off instrument host, a remote control component and a unit switch; wherein the gas sensor and the gas power-off instrument host are electrically connected and both are installed on the unit, and the gas sensor is used to collect gas concentration data of the working face; the transmitting device and the receiving device of the remote control component are respectively arranged in an intrinsically safe junction box, and the transmitting device and the receiving device are wirelessly connected, the normally open contact of the gas power-off instrument host is connected in series with the transmitting device, and the normally closed contact of the receiving device is connected in series with the unit switch.

[0015] In this embodiment, the intrinsically safe junction box housing the transmitter is mounted on the side of the gas cut-off meter, while the intrinsically safe junction box housing the receiver is mounted on the side of the unit's switch. The unit's switch is a 315 type, mounted on the switch rack included with the unit's load-bearing structure. The remote control component is a small relay remote control switch.

[0016] The control logic of this solution is:

[0017] The gas sensor collects the gas concentration data of the working face and transmits it to the gas power-off instrument host;

[0018] The gas-disconnecting device compares the gas concentration with a built-in concentration threshold. If the concentration exceeds the threshold, the device sends a power-off signal to the transmitter of the remote control component. (Specifically, the output of the gas-disconnecting device is connected to a relay. Upon receiving a high-level signal from the device, the relay's coil energizes, closing a normally open contact of the device controlled by the relay. This normally open contact is then connected in series with the transmitter.)

[0019] When the normally open contact closes, the transmitter is powered and activated. The transmitter transmits a power-off command to the receiver using wireless technology (Wi-Fi, Bluetooth, infrared, etc.). Upon receiving the command, the receiver disconnects the power supply to the unit switch, thereby achieving the power-off operation. (Specifically, the output terminal of the receiver may be connected to a relay. Upon receiving a high-level signal output by the receiver, the relay's coil energizes, thereby opening a normally closed contact of the receiver controlled by the relay. This normally closed contact is connected in series with the unit switch.)

[0020] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A wireless control device for an onboard power-off instrument of a tunneling working face unit, characterized by: It includes a gas sensor, a gas power-off instrument host, a remote control component and a unit switch; the gas sensor and the gas power-off instrument host are electrically connected and both are installed on the unit, and the gas sensor is used to collect gas concentration data on the working face; the transmitter and the receiver of the remote control component are respectively arranged in an intrinsically safe junction box, and the transmitter and the receiver are wirelessly connected, the normally open contact of the gas power-off instrument host is connected in series with the transmitter, and the normally closed contact of the receiver is connected in series with the unit switch.

2. The wireless control device for the onboard power-off instrument of the tunneling working face unit according to claim 1 is characterized in that: The intrinsically safe junction box where the transmitter is located is installed on the side of the gas cut-off instrument host, and the intrinsically safe junction box where the receiver is located is installed on the side of the unit switch.

3. The wireless control device for the onboard power-off instrument of the tunneling working face unit according to claim 1 is characterized in that: The unit switch is installed on the switch rack provided with the unit's load-bearing part.

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