Underground coal mine hydraulic hammering type controllable vibrator vehicle device

Abstract

The invention belongs to the technical field of seismic exploration, and particularly relates to a coal mine underground hydraulic hammering type controllable seismic source vehicle device. The device comprises a crawler, a rotating platform and a hydraulic hammering system, the rotating platform, a four-column type lifting hydraulic support installed on the rotating platform and a hydraulic support in the hydraulic hammering system are hydraulically controlled, and the hydraulic hammering system can conduct 360-degree horizontal rotation, height stepless adjustment and horizontal stretching and retracting. And meanwhile, the crawler-type vehicle body and remote control operation are adopted, so that the crawler-type underground coal mine hammering vehicle is suitable for a complex walking environment in an underground coal mine, and the construction efficiency and the safety are improved.

Description

Technical Field

[0001] This invention belongs to the field of seismic exploration technology, specifically relating to a hydraulic hammer-type controllable seismic source vehicle device for underground coal mines. Background Technology

[0002] Geophysical exploration technology is widely used in coal mine face detection due to its high efficiency, accuracy, and ease of construction. Seismic exploration is one of the main methods of geophysical exploration in mines. Its principle is to generate seismic waves in coal seams or rock strata. When the seismic waves pass through lithological anomaly areas during propagation, the corresponding parameters such as seismic wave velocity and amplitude will change. By analyzing the changes in these parameters, the location and distribution of lithological anomaly areas can be deduced. Currently, generating seismic waves usually requires artificial seismic sources. Traditional artificial seismic sources include explosive seismic sources and carbon dioxide seismic sources. Explosive seismic sources have complex construction procedures and low efficiency. Under the "one blast, three inspections" safety measures, the single-blast activation construction time is long, and explosive seismic sources pose an explosion risk in gas environments, which can easily lead to safety accidents. Carbon dioxide seismic sources have high construction costs, and liquid carbon dioxide poses a high-pressure gas leakage risk during storage and transportation. In addition, the detonation system relies on electric heating rods to break through the safety membrane, resulting in insufficient equipment stability. Therefore, replacing explosive or carbon dioxide seismic sources has become an industry consensus, and mechanical seismic sources such as hammer impact or drop weight seismic sources are receiving increasing attention.

[0003] Chinese patent CN 116609822 A discloses a hammer-driven seismic source device and a shallow seismic exploration method. This device uses a pulley system and a traction rope to lift or release a falling hammer. The pulley system is mounted on a mobile vehicle, offering good flexibility and facilitating the survey of multiple points. The device includes a vehicle body, pulley system, drive module, and traction rope. The drive module controls the winding and unwinding of the traction rope via a hydraulic motor and a winding drum, realizing the lifting and releasing of the falling hammer. Chinese patent CN213780389U discloses a vehicle-mounted seismic source device. This device includes a vehicle body, a cargo compartment, a hammer-driven unit, and a controller. The hammer-driven unit is installed inside the cargo compartment and controls the lifting, lowering, and hammering action of the hammer via a steel wire rope and a drive wheel. These devices reduce the height and size of the vehicle-mounted seismic source device, minimizing the possibility of personal injury during transportation and use. The hammer-driven falling weight seismic source devices designed in the aforementioned existing technical solutions are well-suited for surface seismic exploration, but they have significant drawbacks for underground seismic exploration. The hammer-driven seismic source in these solutions is a falling weight source, only providing a vertically downward hammering direction. However, the hammering direction of an underground hammer-driven seismic source needs to be adaptively adjusted under specific geological conditions or exploration requirements. For example, if the shaft has an inclination angle (such as in directional or horizontal shafts), the hammer's posture needs to be adjusted so that it can still impact the target layer in the inclined section. Alternatively, to improve seismic wave coverage, the underground hammer-driven seismic source needs to employ multi-directional hammering, meaning the hammer periodically impacts different locations on the shaft wall during rotation to generate multi-directional seismic waves. Furthermore, the existing source vehicle is not suitable for the underground coal mine environment, easily tipping over or sinking in complex terrain such as roadway slopes or soft soil, resulting in low mobility and deployment efficiency. Finally, the existing solutions require manual operation to lift the hammer, posing risks such as falls from heights and hammer slippage, leading to a high accident rate. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical problem to be solved by this invention is to provide a hydraulic hammer-type controllable vibration source vehicle device for underground coal mines, which can freely adjust the hammer direction to meet the exploration needs under different working conditions, while adapting to the complex walking environment underground in coal mines, thereby improving construction efficiency and safety.

[0005] The present invention adopts the following technical solution:

[0006] A controllable vibration source vehicle device for hydraulic hammering in coal mines includes a tracked vehicle, a rotating platform, and a hydraulic hammering system. The rotating platform is located on top of the tracked vehicle, and the tracked vehicle and the rotating platform are connected by a gear rotation mechanism. The hydraulic hammering system is located on top of the rotating platform and is held by a fixed plate. The fixed plate is connected to a four-column hydraulic support by fixing bolts, and the four-column hydraulic support is fixed on the rotating platform.

[0007] The tracked vehicle is equipped with hydraulic cylinders, and an electronic control integrated unit is arranged on the rotating platform. The left end of the hydraulic hammering system is connected to the upper end of the hydraulic stabilizing bracket, and the lower end of the hydraulic stabilizing bracket is connected to the rotating platform via a pin. The lower part of the hydraulic hammering system is connected to the upper end of the telescopic guide mechanism, and the lower end of the telescopic guide mechanism is connected to the central rotary joint. The central rotary joint is fixed on the rotating platform, and the hydraulic hammering system is connected to the hydraulic cylinders located inside the tracked vehicle through the telescopic guide mechanism and the central rotary joint.

[0008] The hydraulic hammering system includes an outer cylinder, a piston cylinder, a chisel, a chisel tip, a three-position four-way solenoid directional valve, an accumulator, a proportional relief valve, an oil inlet, and an oil return port. The piston cylinder is inside the outer cylinder. A hollow pipe section is formed between the right end of the piston cylinder and the right end of the outer cylinder. The piston head inside the piston cylinder and the chisel connected to the right side of the piston head divide the piston cylinder into a rodless chamber on the left and a rod chamber on the right. The chisel passes sequentially through the rod chamber, the hollow pipe section formed between the right end of the piston cylinder and the right end of the outer cylinder, and the right end of the outer cylinder, until it exits at the right end of the outer cylinder to form a protruding chisel tip. The accumulator is connected to the oil inlet, the oil return port, and the three-position four-way solenoid directional valve. The three-position four-way solenoid directional valve is connected to the piston cylinder, the outer cylinder, the accumulator, the oil inlet, and the oil return port.

[0009] Preferably, the piston cylinder of the hydraulic hammering system is provided with a hydraulic support at the left end, which can push out and pull back the piston cylinder to realize the horizontal extension and retraction function of the hydraulic hammering system.

[0010] Preferably, a limiter is provided on the inner wall of the rod chamber of the piston cylinder. When the left end of the rod reaches the limiter position during the excitation operation, the hydraulic circuit is closed and reopened after the excitation operation is completed to perform a reset operation.

[0011] The working principle of this technical solution is as follows:

[0012] The device of this invention consists of three parts: a tracked vehicle, a rotating platform, and a hydraulic hammering system. The tracked vehicle houses a hydraulic motor, a power battery, and a hydraulic oil tank, and its drive wheels are powered by electricity. The rotating platform is mounted on the tracked vehicle and connected to it via a slewing mechanism, rotating as driven by the hydraulic motor. An integrated electronic control unit is located on the rotating platform, controlling the power and hydraulic systems of the entire vibratory source vehicle. The hydraulic hammering system is fixed to the rotating platform via a top plate and a four-post hydraulic support. A hydraulic stabilizing support is also installed at the left end of the hydraulic hammering system and connected to the rotating platform to ensure the stability of the hammering system during the excitation process.

[0013] The explosion-proof motor, remotely controlled by the electronic control integrated unit, can drive the tracked vehicle. Utilizing hydraulic linkage, the rotating platform can rotate 360° horizontally to achieve free adjustment of the hammering direction. The four-column lifting hydraulic support installed on the rotating platform can achieve stepless height adjustment of the hydraulic hammering system. Combined with the precise control of the horizontal extension and retraction of the drill rod by the hydraulic support at the left end of the piston cylinder, a three-dimensional adjustment capability is formed that can adapt to the excitation position in the middle of the coal seam on the side of the roadway.

[0014] The beneficial effects obtained by adopting the above technical solution are as follows:

[0015] (1) The present invention provides a hydraulic hammer-type controllable vibration source vehicle device for underground coal mines. Through hydraulic control, the hammer system can perform 360° horizontal rotation, stepless height adjustment and horizontal extension, realizing free control of hammer direction and position, and meeting the needs of underground exploration under different working conditions.

[0016] (2) The present invention provides a hydraulic hammer-type controllable seismic source vehicle device for underground coal mines. It adopts a tracked vehicle body and can operate stably on slopes or soft soil terrain. It is adapted to the complex walking environment in underground coal mines. After the construction of a single artificial seismic source is completed, it can be quickly transferred to the next target point to continue construction, which greatly improves the construction efficiency.

[0017] (3) The present invention provides a hydraulic hammer-type controllable vibration source vehicle device for underground coal mines, which uses an electronic control integrated unit to control the power system and hydraulic system of the whole vehicle, receives remote control signals, realizes the remote control operation function of the whole vehicle, and improves the safety of personnel during construction. Attached Figure Description

[0018] Figure 1 This is a front view of the hydraulic hammer-type controllable vibration source vehicle of the present invention.

[0019] Figure 2 This is a side view of the hydraulic hammer-type controllable vibration source vehicle of the present invention.

[0020] Figure 3 This is a schematic diagram of the hydraulic oil circuit of the hydraulic hammering system of the present invention.

[0021] Figure 4 This is a schematic diagram of the three-position four-way solenoid directional valve used in this invention.

[0022] Labels in the diagram: 1. Tracked vehicle; 2. Rotating platform; 3. Hydraulic hammering system; 4. Four-post hydraulic support; 5. Electrical control integrated unit; 6. Central rotary joint; 7. Telescopic guide mechanism; 8. Hydraulic stabilizing support; 9. Pin shaft; 10. Hammer head; 11. Fixing plate; 12. Fixing bolt; 13. Electric drive wheel; 21. Outer cylinder; 22. Piston cylinder; 23. Hydraulic support; 24. Chisel rod; 25. Chisel tip; 26. Rodless chamber; 27. Rod chamber; 28. Three-position four-way solenoid directional valve; 29. ​​Accumulator; 30. Proportional relief valve; 31. Oil inlet; 32. Oil return port; 33. Limit switch. Detailed Implementation

[0023] The technical solution of the present invention will now be described more clearly and completely with reference to the accompanying drawings.

[0024] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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 invention and simplifying the description, and do not indicate or imply that the device, component or structure referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this invention.

[0025] The hydraulic hammering system in this embodiment operates in three states: pressure holding state, activation state, and reset state. Figure 3 and Figure 4 As shown, when in the pressure-holding state, the three-position four-way solenoid directional valve 28 is in the neutral position. At this time, all four ports of the three-position four-way solenoid directional valve 28 are closed, and hydraulic oil enters the accumulator 29 from the inlet 31. After meeting a certain oil pressure, it flows out from the return port 32 through the proportional relief valve 30, forming a circuit. When in the ignition state, the three-position four-way solenoid directional valve 28 is in the left position. At this time, port A-P and port B-T are open circuits. Hydraulic oil enters the hydraulic hammering system 3 from the inlet 31, passes through the accumulator 29 to the three-position four-way solenoid directional valve 28, and the hydraulic oil flows from port P to port A to the ignition system 3. The rodless chamber 26 of piston cylinder 22 pushes the chisel 24 to hammer. The return oil path goes from the rod chamber 27 of piston cylinder 22 through port B of three-position four-way solenoid valve 28, out through port T, and into the hydraulic oil tank through return port 32. When in the reset state, three-position four-way solenoid valve 28 is in the right position. At this time, port A-T and port B-P are open. The hydraulic oil inlet path goes from port P to port B and into the rod chamber 27 of piston cylinder 22, pushing the chisel 24 to reset. The return oil path goes from the rodless chamber 26 to port A and port T of three-position four-way solenoid valve 28 and into the hydraulic cylinder to form a circuit.

[0026] The specific implementation process of the hydraulic hammer-type controllable vibration source vehicle device in underground coal mines in this embodiment is as follows: Figure 1, Figure 2 and Figure 3 The hydraulic hammer-type controllable vibration source vehicle device shown includes a tracked vehicle 1, a rotating platform 2, and a hydraulic hammering system 3. The tracked vehicle 1 is electrically driven. After reaching the designated position, it drives the rotating platform 2 to rotate the upper hydraulic hammering system 3 to the set hammering direction. The four-column hydraulic support 4 on the rotating platform 2 is raised and lowered to the set hammering height. At this time, there is an appropriate gap between the hammer head 10 and the excitation point. The three-position four-way solenoid valve 28 is in the neutral position, the hydraulic system is in a pressure-holding state, and energy storage begins. After reaching the pressure, the three-position four-way solenoid valve 28... With the directional valve in the left position, the hydraulic hammering system is in the activated state. The drill rod 24 of the hydraulic hammering system 3 is pushed by hydraulic oil, and the hammer head 10 at the end of the drill rod 24 is pushed to hammer the coal wall, realizing the activation of the artificial mechanical vibration source in the coal mine on the coal wall. After the activation process is completed, the three-position four-way solenoid directional valve 28 is in the right position, and the hydraulic hammering system is in the reset state. The hydraulic oil pushes the drill rod 24 to reset. After the reset process is completed, the hydraulic hammering system is adjusted to the appropriate direction and height, and the vibration source vehicle is driven to the next mark point to prepare for the construction of the next vibration source.

Claims

1. A hydraulic hammer-type controllable vibration source vehicle device for underground coal mines, characterized in that, The system includes a tracked vehicle (1), a rotating platform (2), and a hydraulic hammering system (3). The rotating platform (2) is located on top of the tracked vehicle (1). The tracked vehicle (1) and the rotating platform (2) are connected by a gear rotation mechanism. The hydraulic hammering system (3) is located on top of the rotating platform (2). The hydraulic hammering system (3) is held by a fixing plate (11). The fixing plate (11) is connected to a four-column hydraulic support (4) by fixing bolts (12). The four-column hydraulic support (4) is fixed on the rotating platform (2). The tracked vehicle (1) is equipped with a hydraulic cylinder, and the rotating platform (2) is equipped with an electronic control integrated unit (5). The left end of the hydraulic hammering system (3) is connected to the upper end of the hydraulic stabilizing bracket (8), and the lower end of the hydraulic stabilizing bracket (8) is connected to the rotating platform (2) through a pin (9). The lower part of the hydraulic hammering system (3) is connected to the upper end of the telescopic guide mechanism (7), and the lower end of the telescopic guide mechanism (7) is connected to the central rotary joint (6). The central rotary joint (6) is fixed on the rotating platform (2). The hydraulic hammering system (3) passes through the rotating platform (2) through the telescopic guide mechanism (7) and the central rotary joint (6) and is connected to the hydraulic cylinder located inside the tracked vehicle (1). The hydraulic hammering system (3) includes an outer cylinder (21), a piston cylinder (22), a chisel (24), a chisel tip (25), a three-position four-way solenoid directional valve (28), an accumulator (29), a proportional relief valve (30), an oil inlet (31), and an oil return port (32). The piston cylinder (22) is inside the outer cylinder (21). A hollow pipe section is formed between the right end of the piston cylinder (22) and the right end of the outer cylinder (21). The piston head inside the piston cylinder (22) and the chisel (24) connected to the right side of the piston head divide the piston cylinder (22) into a rodless chamber (26) on the left and a rodless chamber (26) on the right. The rod chamber (27) is formed by the drill bit (24) passing through the rod chamber (27), the right end of the piston cylinder (22) and the right end of the outer cylinder (21) to form an empty pipe section and the right end of the outer cylinder (21) until it passes through the right end of the outer cylinder (21) to form a protruding drill bit (25). The accumulator (29) is connected to the oil inlet (31), the oil return port (32) and the three-position four-way solenoid valve (28). The three-position four-way solenoid valve (28) is connected to the piston cylinder (22), the outer cylinder (21), the accumulator (29), the oil inlet (31) and the oil return port (32).

2. The controllable vibration source vehicle device for underground hydraulic hammering in coal mines according to claim 1, characterized in that, The piston cylinder (22) of the hydraulic hammering system (3) is provided with a hydraulic support (23) at the left end, which can push out and pull back the piston cylinder (22) to realize the horizontal extension and retraction function of the hydraulic hammering system (3).

3. The controllable vibration source vehicle device for underground hydraulic hammering in coal mines according to claim 1, characterized in that, The piston cylinder (22) has a limiter (33) installed on the inner wall of the rod chamber (27). When the left end of the rod (24) in the excitation operation reaches the limiter (33), the hydraulic circuit is closed. After the excitation operation is completed, it is reopened to perform the reset operation.

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