Broadcasting system for safety of coal mine wellhead

Abstract

The utility model discloses a broadcasting system for safety of a coal mine wellhead, which comprises a controller arranged in a wellhead waiting room, and an information display screen, an entrance gate and a broadcasting indicating device which are electrically connected with the controller, an infrared counter is arranged at the entrance gate, a cage for riding is arranged behind the entrance gate, and the broadcasting indicating device is electrically connected with the controller. The cage is provided with an elevator winding drum used for controlling lifting, a rotary encoder used for obtaining the lifting speed of the cage is installed on a winding shaft of the elevator winding drum, the cage is further provided with a depth indicator used for obtaining the position where the cage is located, and the infrared counter, the rotary encoder and the depth indicator are all electrically connected with the controller. Personnel queuing time and well entering time can be accurately displayed and broadcasted, the cage condition is broadcasted in advance, a gate is automatically opened and closed to achieve personnel cage entering control, the well entering safety discipline is enhanced, and the well entering efficiency is improved; meanwhile, full rest is achieved before the cage goes down, queuing in advance is not needed, and the situation that the cage going down is full and stays up is prevented.

Description

Technical Field

[0001] This utility model relates to the field of coal mine safety technology, and in particular to a broadcasting system for coal mine shaft safety. Background Technology

[0002] Currently, in coal mines, personnel enter the mine by riding in hoisting cages according to a schedule established by the cage operation system. They plan their descent time according to the schedule and wait at the mine entrance in advance. In order to ensure timely descent, the real-time operation status of the cages is unknown, which leads to congestion at the hoisting cage entrance during peak descent times. In cold winters, personnel waiting in the corridor are directly exposed to the wind from the mine entrance, which compromises the safety and efficiency of the descent process. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a broadcasting system for safety at coal mine shafts, so as to solve the above-mentioned problems.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A broadcasting system for safety at a coal mine entrance includes a controller installed in a waiting room at the entrance, an information display screen electrically connected to the controller, an entrance gate, and a broadcasting indicator. An infrared counter is installed at the entrance gate, and a cage for riding is located behind the entrance gate. A hoist drum for controlling the lifting and lowering of the cage is installed on the cage. A rotary encoder is installed on the shaft of the hoist drum to obtain the lifting speed of the cage. A depth indicator is also installed on the cage to obtain its location. The infrared counter, rotary encoder, and depth indicator are all electrically connected to the controller.

[0006] Furthermore, in the above-mentioned utility model, the broadcast indicator device is provided in at least two parts, which are respectively located on the left and right sides of the information display screen.

[0007] Furthermore, in the above-mentioned utility model, the broadcasting indicator device includes a full crew warning broadcaster and a well entry reminder broadcaster.

[0008] The beneficial effects of this utility model are:

[0009] This utility model's broadcasting system can accurately display and broadcast personnel preparation time, queuing time, and entry time through a display screen and voice broadcasting, achieving intelligent management of personnel going down the mine. It can announce the cage status in advance, allowing personnel to prepare in an orderly manner, and automatically open and close the gates to control personnel entering the cage, strengthening safety discipline and improving entry efficiency. At the same time, it can ensure sufficient rest before going down the mine, eliminating the need to queue in advance, and preventing the situation where personnel who cannot board the cage have to wait at the side of the cage or return to the waiting room at the mine entrance because the cage is full. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the structure of the hoist drum and cage of this utility model;

[0012] Figure 3 This is a schematic diagram of the system control principle of this utility model.

[0013] In the diagram, 1-Waiting room at the wellhead, 2-Hoist drum, 3-Entrance gate, 4-Controller, 5-Information display screen, 6-Broadcast indicator device, 7-Rotary encoder. Detailed Implementation

[0014] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0015] Example:

[0016] Please see the appendix Figure 1 -Appendix Figure 3 As shown, a broadcasting system for safety at a coal mine entrance includes a controller 4 installed in the waiting room 1 at the entrance, an information display screen 5 electrically connected to the controller 4, an entrance gate 3, and a broadcasting indicator 6. The controller 4 can be processed by an MCS-51 microcontroller and is also equipped with a display screen, which has more visualization and automation functions than traditional controllers. The entrance gate 3 is equipped with an infrared counter (not shown in the figure) to count the number of people passing through the gate and to display the number of people entering the cage on the information display screen 5. Behind the entrance gate 3 is a cage for riding in. The cage is equipped with a hoist drum 2 for controlling the lifting and lowering. The cage is driven by a motor to rotate the hoist drum 2, thereby moving the cage up and down to transport the people entering the mine.

[0017] A rotary encoder 7 is installed on the shaft of the hoist drum 2 to obtain the hoisting speed of the cage. A depth indicator is also provided on the cage to obtain the position of the cage. The infrared counter, the rotary encoder 7 and the depth indicator are all electrically connected to the controller 4. The time of the cage's descent or ascent can be calculated based on the hoisting speed of the cage and the descent or ascent height of the cage.

[0018] In the above embodiments, preferably, at least two broadcast indicator devices 6 are provided and are respectively located on the left and right sides of the information display screen 5.

[0019] The broadcasting indicator device 6 includes a full crew warning broadcaster and a well entry reminder broadcaster.

[0020] Specifically, the controller 4 obtains the cage speed through the rotary encoder 7, obtains the position through the depth indicator, and calculates and plans the preparation, queuing, and entry time with reference to the zero speed and zero position set by the constraint correction. The preparation, queuing, and entry time are displayed on the information display screen 5. At the same time, the entry reminder broadcast reminds personnel to enter the cage in an orderly manner. When the entry time is up, the entrance gate 3 is opened to let personnel into the cage. When the number of personnel entering the cage exceeds the prescribed number, the full-capacity warning broadcast reminds personnel to stop entering, and the entrance gate 3 is closed through the controller 4. The information display screen 5 displays the 3D image status of the cage, the cage lifting height, and the operation status in real time, so as to facilitate the observation of the status of personnel entering the cage at any time.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A broadcasting system for safety at coal mine shafts, characterized in that, The system includes a controller (4) installed in the waiting room (1) at the wellhead, an information display screen (5) electrically connected to the controller (4), an entrance gate (3), and a broadcast indicator (6). An infrared counter is provided at the entrance gate (3), and a cage for riding is provided behind the entrance gate (3). A hoist drum (2) for controlling the lifting and lowering is provided on the cage. A rotary encoder (7) for obtaining the lifting speed of the cage is installed on the shaft of the hoist drum (2). A depth indicator for obtaining the location of the cage is also provided on the cage. The infrared counter, the rotary encoder (7), and the depth indicator are all electrically connected to the controller (4).

2. A broadcasting system for safety at coal mine entrances according to claim 1, characterized in that, The broadcast indicator device (6) is provided in at least two parts, and is respectively located on the left and right sides of the information display screen (5).

3. A broadcasting system for safety at coal mine entrances according to claim 1, characterized in that, The broadcasting indicator device (6) includes a full crew warning broadcaster and a well entry reminder broadcaster.

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