Personnel protection alarm device for roadheader

Abstract

The utility model relates to the technical field of emergency protection of a roadheader, and discloses a personnel protection alarm device of the roadheader, which comprises a control box, an audible and visual alarm and a pyroelectric infrared sensor, a transverse partition plate is arranged in a box body and divides the interior of the box body into an upper cavity and a lower cavity, and the upper cavity and the lower cavity are arranged in the box body. A PLC and a wiring terminal are arranged in the upper cavity, the PLC is electrically connected with the wiring terminal, a power source and a fuse protector are arranged in the lower cavity, the power source is electrically connected with the PLC through the fuse protector, and the audible and visual alarm and the pyroelectric infrared sensor are electrically connected with the PLC. According to the utility model, the pyroelectric infrared sensor is used for detecting the activity condition of personnel in a target range, and when a person is in an alarm area, the pyroelectric infrared sensor sends a signal to the audible and visual alarm, so that the audible and visual alarm gives a voice alarm, and the alarm lamp flickers to give an early warning prompt to the person, thereby avoiding the occurrence of safety accidents.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency protection of a tunnel boring machine, in particular to a personnel protection alarm device for a tunnel boring machine. Background Art

[0002] Comprehensive tunnel boring machine is the abbreviation of comprehensive mechanized tunnel boring machine. It is a comprehensive mechanized equipment that integrates multiple functions such as tunneling, rock loading, coal transportation, and even support and road nailing. It is suitable for various complex underground working environments, such as coal mines and tunnels. Through mechanization, it realizes fast and efficient tunnel excavation.

[0003] During tunneling machine operation, the air inside the tunnel is filled with various dust and dirt, visibility is low, and the surrounding environment is complex. Therefore, the operation must be carried out by an operator, a supervisor, and a safety officer. However, relying solely on the naked eye of these personnel cannot guarantee absolute safety. Misperception or human negligence can still lead to safety accidents such as casualties. Therefore, it is necessary to design a protective device to address these issues. Utility Model Content

[0004] In order to solve the above technical problems, the utility model discloses a personnel protection alarm device for a comprehensive tunneling machine, including a control box, an audible and visual alarm and a pyroelectric infrared sensor. The control box includes a box body, an upper cover plate and a lower cover plate. A cross partition is provided inside the box body, and the cross partition divides the interior of the box body into an upper cavity and a lower cavity. The upper cover plate is arranged on the outside of the upper cavity, and the lower cover plate is arranged on the outside of the lower cavity. A PLC controller and wiring terminals are provided in the upper cavity, and the PLC controller is electrically connected to the wiring terminals. A power supply and a fuse are provided in the lower cavity, and the power supply is electrically connected to the PLC controller through the fuse. The audible and visual alarm and the pyroelectric infrared sensor are electrically connected to the PLC controller respectively.

[0005] Furthermore, a display is provided on the outer side of the upper cover, and the display is electrically connected to the PLC controller.

[0006] Furthermore, a plurality of waterproof connectors are provided on both sides of the box body. The waterproof connectors located on both sides of the upper cavity are connected to the PLC controller through wiring terminals, and the waterproof connectors located on both sides of the lower cavity are connected to the power supply through fuses.

[0007] Furthermore, the PLC controller is electrically connected to the sound and light alarm via a driver.

[0008] Furthermore, the PLC controller and the pyroelectric infrared sensor are electrically connected via an amplifier.

[0009] Furthermore, the PLC controller is a mine-use explosion-proof and intrinsically safe programmable controller.

[0010] Furthermore, the sound and light alarm is a mining explosion-proof and intrinsically safe sound and light alarm.

[0011] Furthermore, the display is an intrinsically safe display for mining.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The personnel protection alarm device of the utility model for a tunnel boring machine detects the activity status of personnel within the target range through a pyroelectric infrared sensor. When a person is in the alarm area, the pyroelectric infrared sensor sends a signal to the sound and light alarm, causing it to issue a voice alarm and the alarm light to flash, giving an early warning to the personnel, thereby avoiding the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces 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 labor.

[0015] Figure 1 This is a schematic diagram of the external structure of the control box in the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the control box in the present utility model;

[0017] Figure 3 This is a circuit diagram of the utility model.

[0018] Reference numerals:

[0019] 1- Sound and light alarm, 2- Pyroelectric infrared sensor, 3- Control box, 4- Upper cover, 5- Lower cover, 6- Cross partition, 7- Upper cavity, 8- Lower cavity, 9- PLC controller, 10- Terminal block, 11- Power supply, 12- Fuse, 13- Display, 14- Waterproof connector, 15- Driver, 16- Amplifier. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below 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, rather than all the embodiments.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In the description of the embodiments, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections, connections through an intermediary medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on their specific circumstances.

[0023] The personnel protection alarm device of the tunnel boring machine in this embodiment includes a control box, an audible and visual alarm 1 and a pyroelectric infrared sensor 2.

[0024] like Figures 1-2 As shown, the control box includes a box body 3, an upper cover plate 4 and a lower cover plate 5. A transverse partition plate 6 is provided inside the box body 3, and the transverse partition plate 6 divides the inside of the box body 3 into an upper cavity 7 and a lower cavity 8. The upper cover plate 4 is arranged on the outside of the upper cavity 7, and the lower cover plate 5 is arranged on the outside of the lower cavity 8. A PLC controller 9 and a wiring terminal 10 are provided in the upper cavity 7, and the PLC controller 9 is electrically connected to the wiring terminal 10. A power supply 11 and a fuse 12 are provided in the lower cavity 8.

[0025] A display 13 is provided on the outside of the upper cover 4, and multiple waterproof connectors 14 are provided on both sides of the box 3. The waterproof connectors 14 located on both sides of the upper cavity 7 are connected to the PLC controller 9 through the wiring terminals 10, and the waterproof connectors 14 located on both sides of the lower cavity 8 are connected to the power supply 11 through the fuse 12.

[0026] like Figure 3 As shown, the sound and light alarm 1 is electrically connected to the PLC controller 9 through the driver 15, the pyroelectric infrared sensor 2 is electrically connected to the PLC controller 9 through the amplifier 16, the power supply 11 is electrically connected to the PLC controller 9 through the fuse 12, and the display 13 is electrically connected to the PLC controller 9.

[0027] The PLC controller 9 is the control center of the entire system, and the display 13 is used to display the system's operating status and related parameters in real time; the fuse 12 protects the system and can disconnect the circuit in time when a short circuit or overcurrent occurs in the system to prevent the system from overloading.

[0028] The sound-light alarm 1 is a mine-used explosion-proof and intrinsic safety type sound-light alarm, the PLC controller 9 is a mine-used explosion-proof and intrinsic safety type programmable controller, the display 13 is a mine-used intrinsic safety type display, and the driver 15 can adopt a LIS9452U driving chip.

[0029] In use, the control box is installed on the roadheader, and the sound-light alarm 1 is installed on a prominent position of the roadheader for observation; the pyroelectric infrared sensor 2 is installed on the front and rear sides of the roadheader for detecting nearby personnel.

[0030] When the pyroelectric infrared sensor 2 detects that personnel are in the alarm area, the pyroelectric infrared sensor 2 generates a corresponding voltage signal after detecting the personnel information and sends the signal to the PLC controller 9; the PLC controller 9 analyzes and processes the signal and sends the signal to the sound-light alarm 1, so that the sound-light alarm 1 issues a voice alarm and the alarm light flashes to pre-warn the personnel and avoid safety accidents.

[0031] When the personnel leave the dangerous area, the sound-light alarm 1 stops alarming; however, the PLC controller 9 is still in the locking state and needs to be manually reset to release the locking, and the equipment can be started again after the locking is released.

[0032] The above is only a preferred embodiment of the utility model and does not limit the utility model; any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model. In addition, the technical solutions of the various embodiments can be combined with each other, but must be based on the realization of ordinary personnel in the art; when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the utility model.

Claims

1. A personnel protection alarm device for a fully-mechanized tunnel boring machine, characterized in that: It includes a control box, an audible and visual alarm, and a pyroelectric infrared sensor. The control box includes a box body, an upper cover plate, and a lower cover plate. A transverse partition is provided inside the box body, and the transverse partition divides the inside of the box body into an upper cavity and a lower cavity. The upper cover plate is arranged on the outside of the upper cavity, and the lower cover plate is arranged on the outside of the lower cavity. A PLC controller and wiring terminals are provided in the upper cavity, and the PLC controller is electrically connected to the wiring terminals. A power supply and a fuse are provided in the lower cavity, and the power supply is electrically connected to the PLC controller through the fuse. The audible and visual alarm and the pyroelectric infrared sensor are electrically connected to the PLC controller respectively.

2. The personnel protection alarm device for a tunnel boring machine according to claim 1 is characterized in that: A display is provided on the outer side of the upper cover plate, and the display is electrically connected to the PLC controller.

3. The personnel protection alarm device for a tunnel boring machine according to claim 1 is characterized in that: A plurality of waterproof connectors are provided on both sides of the box body. The waterproof connectors on both sides of the upper cavity are connected to the PLC controller through wiring terminals, and the waterproof connectors on both sides of the lower cavity are connected to the power supply through fuses.

4. The personnel protection alarm device for a tunnel boring machine according to claim 1 is characterized in that: The PLC controller is electrically connected to the sound and light alarm via a driver.

5. The personnel protection alarm device for a tunnel boring machine according to claim 1 is characterized in that: The PLC controller and the pyroelectric infrared sensor are electrically connected via an amplifier.

6. The personnel protection alarm device for a tunnel boring machine according to claim 1 is characterized in that: The PLC controller is a mine-use explosion-proof and intrinsically safe programmable controller.

7. The personnel protection alarm device for a tunnel boring machine according to claim 1 is characterized in that: The sound and light alarm is a mine-use explosion-proof and intrinsically safe sound and light alarm.

8. The personnel protection alarm device for a tunnel boring machine according to claim 2 is characterized in that: The display is an intrinsically safe display for mining.

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