Energy absorption digital display and danger early warning integrated roadway support anti-impact device

Abstract

An energy absorption digital display and danger early warning integrated roadway support anti-impact device comprises a ball head base, a guide supporting outer cylinder, a guide supporting inner cylinder, an energy absorption block, a flange top plate and an energy absorption digital display and danger early warning unit located on the guide supporting inner cylinder. The energy absorption quantity digital display and danger early warning unit comprises a pressure sensor, a controller, a warning lamp, a buzzer alarm, a display screen and a laser displacement sensor; the pressure sensor is fixedly arranged at the bottom of the guide supporting inner cylinder; the lower end of the energy absorption block abuts against the ball head base, and the upper end of the energy absorption block abuts against the pressure sensor. The controller is fixedly arranged on the upper portion in the guiding and supporting inner cylinder, and the pressure sensor is electrically connected with the controller through a wire. The warning lamp, the buzzer alarm, the display screen and the laser displacement sensor are all installed on the portion, adjacent to the flange top plate, of the guide supporting inner cylinder body and are all electrically connected with the controller through wires. The measuring end of the laser displacement sensor directly faces the upper end face of the guide supporting outer cylinder; the controller power line is connected with an external power supply.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine support and rock burst hazard warning, and in particular relates to an energy absorbing digital display and hazard warning integrated tunnel support anti-bumping device. Background Art

[0002] Rock burst is a complex dynamic phenomenon in mines and one of the difficulties in the study of rock mechanics and mine prevention. In recent years, with the increase in the depth of coal mining, the number of mines with rock burst has increased significantly. Rock burst can cause a large amount of rock collapse and produce horizontal and vertical impacts, which can not only destroy the mine, but also endanger the workers in the mine, posing a great threat to mine production and safety. Therefore, it is necessary to conduct in-depth research on the prevention and control of rock burst.

[0003] At present, traditional tunnel support has become increasingly difficult to cope with rock bursts, and tunnel energy-absorbing and anti-shock hydraulic supports are the most effective support equipment to resist rock bursts. When rock bursts occur, tunnel energy-absorbing and anti-shock hydraulic supports can instantly and spontaneously adapt to the surrounding rock impact process, and absorb energy in the process of adaptive yielding, thereby stopping the impact and achieving an anti-shock effect. Therefore, tunnel energy-absorbing and anti-shock hydraulic supports have become an inevitable choice for rock burst mines.

[0004] However, the existing tunnel energy-absorbing and anti-collision hydraulic supports do not have energy-absorbing prompts and dangerous situation warning functions, which leads to cases where tunnel energy-absorbing and anti-collision hydraulic supports are damaged in advance due to unsatisfactory support conditions during actual use and cannot play a normal anti-collision role. Although some mines have installed pressure monitoring instruments on tunnel energy-absorbing and anti-collision hydraulic supports, they can only monitor the pressure in the hydraulic cylinder. The energy-absorbing device cannot directly reflect the deformation and energy-absorbing situation, let alone provide dangerous warnings. At the same time, there are also problems such as large size and the pressure monitoring instrument being easily damaged by bumps and collisions when installed externally.

[0005] Therefore, it is necessary to develop a built-in energy absorption device that can display absorbed energy and provide danger warning. It does not need to be hung on the column or beam of the tunnel energy-absorbing and anti-impact hydraulic support, and can serve as a "black box" to record the impact at the moment of impact. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention provides a tunnel support anti-impact device with integrated energy absorption digital display and danger warning, which can be used in conjunction with the existing tunnel energy absorption and anti-impact hydraulic support. It can not only absorb the impact energy when impact ground pressure occurs, but also monitor the pressure value in real time and simultaneously realize the digital display of energy absorption; when the pressure value exceeds the safety threshold, it can simultaneously realize sound and light danger warning to remind underground workers to evacuate the dangerous area in time and improve work safety; the overall device is convenient to connect with the tunnel energy absorption and anti-impact hydraulic support without taking up extra space, and is easy to install and maintain.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an energy absorption digital display and danger warning integrated tunnel support anti-collision device, including a ball head base, a guide support outer tube, a guide support inner tube, an energy absorption block, a flange top plate and an energy absorption digital display and danger warning unit; the bottom end of the guide support outer tube is fixedly connected to the ball head base; the bottom end of the guide support inner tube is coaxially inserted into the top end of the guide support outer tube; the energy absorption block is located inside the guide support outer tube; the flange top plate is fixedly set on the top end of the guide support inner tube; the energy absorption digital display and danger warning unit are set on the guide support inner tube.

[0008] The energy absorption digital display and danger warning unit includes a pressure sensor, a controller, a warning light, a buzzer alarm, a display screen and a laser displacement sensor; the pressure sensor is fixedly arranged at the bottom of the guide support inner cylinder; the lower end of the energy absorption block is in contact with the ball head base, and the upper end of the energy absorption block is in contact with the pressure sensor; the controller is fixedly arranged on the upper part of the inner cylinder of the guide support, and the pressure sensor is electrically connected to the controller through a wire; the warning light, buzzer alarm, display screen and laser displacement sensor are all installed on the inner cylinder body of the guide support adjacent to the flange top plate, and the warning light, buzzer alarm, display screen and laser displacement sensor are all electrically connected to the controller through a wire; the measuring end of the laser displacement sensor faces downward and faces the upper end surface of the outer cylinder of the guide support; the power cord of the controller passes through the inner cylinder body of the guide support and is connected to an external power supply, an explosion-proof power supply battery is embedded in the controller, and the controller is powered by an external power supply and an internal explosion-proof power supply battery in dual mode, and the explosion-proof power supply battery is charged by an external power supply.

[0009] Beneficial effects of the present invention:

[0010] The energy-absorbing digital display and danger warning integrated tunnel support anti-impact device of the present invention can be used in conjunction with the existing tunnel energy-absorbing anti-impact hydraulic support. It can not only absorb the impact energy when impact ground pressure occurs, but also monitor the pressure value in real time and simultaneously realize the digital display of energy absorption; when the pressure value exceeds the safety threshold, it can simultaneously realize sound and light danger warning to remind underground workers to evacuate the dangerous area in time and improve work safety; the overall device is conveniently connected to the tunnel energy-absorbing anti-impact hydraulic support and does not occupy additional space, and is easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of an energy absorption digital display and danger warning integrated tunnel support anti-collision device of the present invention;

[0012] In the figure, 1 is a ball head base, 2 is a guide support outer cylinder, 3 is a guide support inner cylinder, 4 is an energy absorbing block, 5 is a flange top plate, 6 is a pressure sensor, 7 is a controller, 8 is a warning light, 9 is a buzzer alarm, 10 is a display screen, and 11 is a laser displacement sensor. DETAILED DESCRIPTION

[0013] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1 As shown, a tunnel support anti-collision device with integrated energy absorption digital display and danger warning includes a ball head base 1, a guide support outer tube 2, a guide support inner tube 3, an energy absorption block 4, a flange top plate 5 and an energy absorption digital display and danger warning unit; the bottom end of the guide support outer tube 2 is fixedly connected to the ball head base 1; the bottom end of the guide support inner tube 3 is coaxially inserted into the top of the guide support outer tube 2; the energy absorption block 4 is located inside the guide support outer tube 2; the flange top plate 5 is fixedly arranged on the top of the guide support inner tube 3; the energy absorption digital display and danger warning unit are arranged on the guide support inner tube 3.

[0015] The energy absorption digital display and danger warning unit includes a pressure sensor 6, a controller 7, a warning light 8, a buzzer alarm 9, a display screen 10 and a laser displacement sensor 11; the pressure sensor 6 is fixedly arranged at the bottom of the guide support inner tube 3; the lower end of the energy absorption block 4 is in contact with the ball head base 1, and the upper end of the energy absorption block 4 is in contact with the pressure sensor 6; the controller 7 is fixedly arranged above the inner part of the guide support inner tube 3, and the pressure sensor 6 is electrically connected to the controller 7 through a wire; the warning light 8, buzzer alarm 9, display screen 10 and laser displacement sensor 11 are all installed on the On the body of the guide support inner cylinder 3 adjacent to the flange top plate 5, the warning light 8, buzzer alarm 9, display screen 10 and laser displacement sensor 11 are all electrically connected to the controller 7 through wires; the measuring end of the laser displacement sensor 11 faces downward and is directly opposite to the upper end surface of the guide support outer cylinder 2; the power cord of the controller 7 passes through the body of the guide support inner cylinder 3 and is connected to an external power supply, and an explosion-proof power supply battery is embedded in the controller 7. The controller 7 is powered by a dual-mode power supply by an external power supply and an internal explosion-proof power supply battery, and the explosion-proof power supply battery is charged by an external power supply.

[0016] The following describes a one-time use process of the present invention in conjunction with the accompanying drawings:

[0017] In this embodiment, the controller 7 adopts the STC89C52 development board and is powered by an external power supply; the warning light 8 adopts an LED light that can switch between a green light and a red light; and the display screen 10 adopts a digital tube display screen.

[0018] When the tunnel energy-absorbing and anti-collision hydraulic support is used in conjunction with the energy-absorbing, digitally displayed and hazard-warning integrated tunnel support anti-collision device of the present invention, the flange top plate 5 is coaxially connected in series with the hydraulic column in the tunnel energy-absorbing and anti-collision hydraulic support, making the present application an integral part of the hydraulic column in the axial direction.

[0019] During the use of the tunnel energy-absorbing and anti-impact hydraulic support, the pressure sensor 6 monitors the pressure on the tunnel energy-absorbing and anti-impact hydraulic support in real time, and the laser displacement sensor 11 monitors the compression deformation of the energy-absorbing block 4 in real time. When the monitored real-time pressure value is within the set safety threshold range, the controller 7 sends a green light signal to the warning light 8, indicating that the working status is safe. At the same time, the display screen 10 digitally displays the monitored real-time pressure value, and underground workers can intuitively obtain the digital pressure value.

[0020] When impact ground pressure occurs, the energy absorbing block 4 and the hydraulic column work together to prevent impact and absorb energy. If the real-time pressure value monitored by the pressure sensor 6 exceeds the set safety threshold range, the controller 7 sends a red light signal to the warning light 8, indicating that the working state is unsafe. At the same time, the controller 7 sends a buzzer alarm signal to the buzzer alarm 9. By lighting the red light and the buzzer alarm, the underground workers are given the first-time danger warning, reminding them to quickly evacuate the dangerous area and improve the safety of the operation.

Claims

1. An energy absorption digital display and danger warning integrated tunnel support anti-collision device, characterized by: It includes a ball head base, a guide support outer tube, a guide support inner tube, an energy absorbing block, a flange top plate and an energy absorbing digital display and a danger warning unit; the bottom end of the guide support outer tube is fixedly connected to the ball head base; the bottom end of the guide support inner tube is coaxially inserted into the top end of the guide support outer tube; the energy absorbing block is located inside the guide support outer tube; the flange top plate is fixedly arranged on the top end of the guide support inner tube; the energy absorbing digital display and the danger warning unit are arranged on the guide support inner tube.

2. According to claim 1, the energy absorption digital display and danger warning integrated tunnel support anti-collision device is characterized by: The energy absorption digital display and danger warning unit includes a pressure sensor, a controller, a warning light, a buzzer alarm, a display screen and a laser displacement sensor; the pressure sensor is fixedly arranged at the bottom of the guide support inner cylinder; the lower end of the energy absorption block is in contact with the ball head base, and the upper end of the energy absorption block is in contact with the pressure sensor; the controller is fixedly arranged on the upper part of the inner cylinder of the guide support, and the pressure sensor is electrically connected to the controller through a wire; the warning light, buzzer alarm, display screen and laser displacement sensor are all installed on the inner cylinder body of the guide support adjacent to the flange top plate, and the warning light, buzzer alarm, display screen and laser displacement sensor are all electrically connected to the controller through a wire; the measuring end of the laser displacement sensor faces downward and faces the upper end surface of the outer cylinder of the guide support; the power cord of the controller passes through the inner cylinder body of the guide support and is connected to an external power supply, an explosion-proof power supply battery is embedded in the controller, and the controller is powered by an external power supply and an internal explosion-proof power supply battery in dual mode, and the explosion-proof power supply battery is charged by an external power supply.

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