Anchor rod machine water gas deslagging automatic switching control protection system and excavating anchor complete equipment

Abstract

The application discloses an anchor rod machine water-gas slagging automatic switching control protection system and a complete set of tunneling and anchoring equipment, which comprises a water-gas switching valve group, an air inlet supply system, a water inlet supply system and an alarm display device. The water-gas switching valve group is used for switching between two working positions according to the air inlet pressure, the water inlet pressure and the cooling water pressure, so as to individually connect the water inlet supply system to make the on-board anchor rod machine carry out water slagging, simultaneously connect the water inlet supply system and the air inlet supply system to make the on-board anchor rod machine carry out water-gas mixed slagging, or individually connect the air inlet supply system to make the on-board anchor rod machine carry out gas slagging. The alarm display device is used for displaying and alarming different abnormalities under the action of the total control system according to the air inlet pressure, the water inlet pressure, the cooling water pressure, the cooling water temperature, the backwater pressure and the backwater temperature. The system has wide application range, high construction efficiency, simple and flexible operation and comprehensive monitoring and protection system.

Description

Technical Field

[0001] This invention relates to the field of coal mine construction technology, and in particular, to an automatic switching control and protection system for water-air-muck discharge of a rock bolting machine. Furthermore, this invention also relates to a complete set of tunneling and anchoring equipment including the aforementioned automatic switching control and protection system for water-air-muck discharge of a rock bolting machine. Background Technology

[0002] The rapid tunneling and anchoring equipment includes a tunneling and anchoring machine, a hydraulic anchor bolt trolley for coal mines, and a belt conveyor for coal mines. The tunneling and anchoring machine handles coal breaking and loading, and also supports roof and sidewall anchor bolts. The hydraulic anchor bolt trolley provides support for the remaining roof anchor bolts, anchor cables, and uniform transfer. The belt conveyor transfers coal to the belt conveyor for continuous transport. During coal mine operations, this rapid tunneling and anchoring equipment allows for simultaneous tunneling, anchoring, and transfer in the working roadway, reducing the labor intensity and manpower requirements of the workers and improving the efficiency of coal mining operations.

[0003] Currently, all tunneling and anchoring equipment sets are equipped with onboard anchor bolting machines. These machines significantly improve the efficiency of underground anchor bolting support and reduce the labor intensity of support workers. Currently, the onboard anchor bolting machines on tunneling and anchoring equipment remove dust and residue generated during the anchor bolting process by supplying water to the roadway. This method has the following shortcomings: First, it consumes a large amount of groundwater: when multiple airborne anchor bolting machines are used at the same time, a flow rate of several hundred liters per minute is required, while mine wastewater often lacks recycling and treatment measures, resulting in a large amount of water resources being used or even wasted. Secondly, there are safety hazards: the slag discharge water flows directly to the ground, causing water accumulation in the work area, affecting the movement of equipment and personnel, and in severe cases, it may even cause equipment to be damaged by water. Third, poor dust removal effect: A large amount of dust is scattered everywhere under the impact of water flow, and the water splashing from the tunnel will also wet the operators; Fourth, not entirely applicable: In some mines with special geological conditions, the floor conditions are not suitable for large amounts of water, and other slag removal methods need to be considered. Fifth, there is no real-time monitoring and alarm: the high-speed tunneling equipment has a fast advance rate, and personnel cannot pay attention to the water intake behind the equipment during tunneling. When the water supply in the tunnel stops or the water intake conditions fluctuate, it can easily cause the equipment to overheat or even be damaged due to failure to stop the machine in time. At the same time, the complex water circuit of the equipment often has many maintenance points when problems occur, and troubleshooting takes a lot of time. Summary of the Invention

[0004] This invention provides an automatic switching control and protection system for water and air muck discharge of anchor bolting machines and a complete set of excavation and anchoring equipment, to solve the technical problems of existing equipment with only water muck discharge, such as narrow applicability, low construction efficiency, and lack of real-time monitoring and alarm.

[0005] The technical solution adopted in this invention is as follows: An automatic water-air slag removal switching control and protection system for a rock bolting machine includes: multiple sets of water-air switching valve groups for corresponding connection to multiple sets of onboard rock bolting machines; an air supply system for supplying compressed air; a water supply system for supplying water to the roadway; and an alarm display device connected to the main control system of the rock bolting equipment. The water-air switching valve groups, air supply system, and water supply system are also respectively connected to the main control system. The air supply system is also used to provide real-time feedback of the compressed air intake pressure to the main control system. The water supply system is also used to monitor the water pressure after water is introduced into the roadway, the cooling water pressure and temperature formed after the cooling water cools the high-temperature fluid medium inside the rock bolting equipment, and the cooling water's effect on the various drive motors inside the rock bolting equipment after further cooling. The return water pressure and temperature are fed back to the central control system in real time. Each water-air switching valve group is also connected to the air supply system and the water supply system. The water-air switching valve group is used to switch between its two working positions according to the air pressure, water pressure and cooling water pressure under the action of the central control system. It can connect to the water supply system alone to make the air-mounted anchor bolting machine perform water discharge, or connect to the water supply system and the air supply system at the same time to make the air-mounted anchor bolting machine perform water-air mixed discharge, or connect to the air supply system alone to make the air-mounted anchor bolting machine perform air discharge. The alarm display device is used to display and alarm for different abnormalities according to the air pressure, water pressure, cooling water pressure, cooling water temperature, return water pressure and return water temperature under the action of the central control system.

[0006] Furthermore, each group of water-air switching valves includes an electromagnetic directional valve connected to the main control system, and a hydraulically controlled three-way ball valve connected to the electromagnetic directional valve. The electromagnetic directional valve is used to switch its working position under the action of the main control system to control the flow of oil entering the control chamber of the hydraulically controlled three-way ball valve, thereby controlling the switching of the hydraulically controlled three-way ball valve accordingly. The P, A, and B positions of the hydraulically controlled three-way ball valve are respectively connected to the airborne anchor bolt machine, the water supply system, and the air supply system, and the water supply system and the air supply system are connected before being connected to the A and B positions of the hydraulically controlled three-way ball valve, respectively.

[0007] Furthermore, a water inlet check valve is also installed in the pipeline connecting the hydraulic three-way ball valve to the water supply system, and an air inlet check valve is also installed in the pipeline connecting the hydraulic three-way ball valve to the air supply system; the P position of the hydraulic three-way ball valve is connected to the machine-mounted anchor bolting machine through two parallel pipelines, one of which is equipped with a hydraulic check valve, which provides control for its S port to connect to the oil supply circuit of the tunneling and anchoring equipment, and the other pipeline is equipped with a manual water balloon valve.

[0008] Furthermore, the water supply system includes a main water inlet pipe for introducing water into the roadway, a cooler installed in the main water inlet pipe, a water distribution multi-port block connected to the outlet of the main water inlet pipe for water distribution, multiple cooling branches for cooling multiple sets of drive motors respectively, a bypass branch, and a return water multi-port block for connecting the cooling water of each cooling branch; the cooler is used to exchange heat between the roadway water and the high-temperature fluid medium in the tunneling and anchoring equipment to cool the high-temperature fluid medium; multiple cooling branches and bypass branches are connected in parallel between the water distribution multi-port block and the return water multi-port block; the return water multi-port block is connected to multiple sets of water-air switching valve groups through multiple water inlet branches respectively.

[0009] Furthermore, the air supply system includes an air intake manifold for introducing compressed air, and the air outlet of the air intake manifold is connected to multiple sets of water-air switching valve groups through multiple air intake branches; the alarm display device includes a main electrical control cabinet installed in the central control room of the tunneling and anchoring equipment, and a remote control connected to the main electrical control cabinet for synchronous display and alarm.

[0010] Furthermore, the water supply system also includes a water inlet pressure detector connected to the water inlet main pipe and a cooling pressure detector connected to the water distribution multi-channel block, with the water inlet pressure detector located upstream of the cooler. The water inlet pressure detector and the cooling pressure detector are also connected to the main control system. The air supply system also includes an air intake pressure detector connected to the air intake main pipe, which is connected to the main control system.

[0011] Furthermore, when the data collected by the inlet water pressure detector or cooling pressure detector is not within the normal inlet water pressure range stored in the main control system, the main control system will display "Abnormal inlet water pressure" on both the main electrical control cabinet and the remote control screen and broadcast an alarm. If the abnormality is not resolved within a set time after the alarm is broadcast, the tunneling and anchoring equipment will be automatically powered off. When the data collected by the inlet air pressure detector is not within the normal compressed air pressure range stored in the main control system, the main control system will display "Abnormal inlet air pressure" on both the remote control and the main electrical control cabinet screen and broadcast an alarm. At the same time, the electromagnetic reversing valve in the water-air switching valve group will also be energized. When the water-air switching valve group is in the "water-air mixing" state, if the abnormality is not handled within a set time after the abnormality is reported, the tunneling and anchoring equipment will automatically shut off power. When the data collected by the water inlet pressure detector is in the low pressure range of the normal water inlet pressure range of the roadway and the data collected by the air inlet pressure detector is in the normal compressed air pressure range, the remote control and the main electrical control cabinet screen will display a "water-air mixing recommended" pop-up window. At this time, clicking "confirm" on the remote control and the main electrical control cabinet will automatically switch the water-air switching valve group to water-air mixing for slag discharge. If "confirm" is not clicked, it will continue to work normally, and clicking "reset" will clear the pop-up window.

[0012] Furthermore, the water supply system also includes a cooling temperature detector connected to the water distribution multi-channel block and a return water temperature detector connected to the return water multi-channel block, and the cooling temperature detector and the return water temperature detector are respectively connected to the main control system; when the data collected by the cooling pressure detector is greater than that of the water inlet pressure detector, the main control system causes the remote control and the main electrical control cabinet to display "cooling water pressure abnormal" and broadcast an alarm; when the data collected by the return water temperature detector is less than that of the cooling temperature detector, the main control system causes the remote control and the main electrical control cabinet to display "drive cooling abnormal" and broadcast an alarm.

[0013] Furthermore, the water supply system also includes a water inlet manual valve, a water inlet filter, a water inlet visual pressure gauge, a water circuit pressure reducing valve, and a water circuit overflow valve, all sequentially arranged in the main water inlet pipe and located upstream of the cooler; the water supply system also includes a cooling visual pressure gauge connected to the water distribution multi-pass block; the water supply system also includes a drive motor cooling shut-off valve and a drive motor cooling check valve, all sequentially arranged in each cooling branch; the water supply system also includes a bypass manual shut-off valve and a bypass check valve, all sequentially arranged in the bypass branch; the water supply system also includes a return water branch connected to the return water multi-pass block, and a return water check valve and a return water manual valve, all sequentially arranged in the return water branch; the water supply system also includes a bolting machine manual shut-off valve, located in the water inlet branch between the return water multi-pass block and each water-air switching valve group; and the air supply system also includes an air intake manual valve and an air intake filter, all sequentially arranged in the main air intake pipe.

[0014] According to another aspect of the present invention, a complete set of anchor bolting equipment is also provided, having an automatic switching control and protection system for water-air-muck discharge of the anchor bolting machine as described in any of the above.

[0015] The present invention has the following beneficial effects: This invention analyzes the functional characteristics and construction methods of the machine-mounted anchor bolting machine, a complete set of tunneling and anchoring equipment. Based on coal mine roadway construction experience, it proposes an automatic water-air slag discharge switching control and protection system for the anchor bolting machine. This system addresses the shortcomings of existing technologies by modifying the existing water-only slag discharge method to three slag discharge methods: water-only slag discharge, air-only slag discharge, and a mixed water-air slag discharge. Through a water-air switching valve group and hydraulic logic control, the switching between water and air is fully automated. Simultaneously, pressure and temperature monitoring alarms enable real-time monitoring of changes in water and air circuit conditions. Different alarms are issued for different anomalies in complex water circuits, providing prompts and assistance to maintenance personnel, thereby significantly improving the efficiency of troubleshooting water circuit faults. Specifically: 1. Increased Applicability: The system of this invention, through the coordination of water-air switching valve group, water supply system, air supply system and main control system, can realize three different muck discharge methods: water muck discharge, air muck discharge, and water-air mixed muck discharge. That is, it can meet the muck discharge medium requirements under different roadway conditions and different construction needs. Moreover, the tunneling and anchoring complete set of equipment (hereinafter referred to as the complete set of equipment) can adapt to various actual needs without upgrading and modification, thereby greatly improving the applicability of the complete set of equipment. 2. Improved construction efficiency: The system of this invention can switch between three slag discharge states of the machine-mounted anchor bolting machine: water, air, and water-air mixture. This allows for the selection of a drilling method that matches different coal seams, significantly improving work efficiency and greatly reducing work intensity. 3. Simple and flexible operation: The system of this invention only requires a simple switch. The automatic switching of the slag discharge mode can be achieved through the water-air switching valve group of the on-board anchor bolt machine. The entire operation process is simple and flexible. 4. Comprehensive monitoring and protection system: The system of this invention can collect and monitor the pressure and temperature data of water intake, air intake, cooling water and return water in real time, so as to provide comprehensive protection for the water and air circuits of the complete set of equipment. At the same time, it can display and broadcast different faults, provide fault prompts and handling suggestions for equipment maintenance personnel, thereby effectively improving the efficiency of maintenance and repair.

[0016] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the automatic switching control and protection system for water and air slag discharge of the anchor bolting machine according to a preferred embodiment of the present invention; Figure 2 yes Figure 1 Schematic diagram of the water-gas switching valve assembly.

[0018] Legend: 1. Manual inlet valve; 2. Inlet filter; 3. Visual inlet pressure gauge; 4. Inlet pressure sensor; 5. Water circuit pressure reducing valve; 6. Water circuit overflow valve; 7. Cooler; 8. Visual cooling pressure gauge; 9. Cooling pressure sensor; 10. Cooling temperature sensor; 11. Diverter multi-way valve; 12. Bypass manual shut-off valve; 13. Bypass check valve; 14. Drive motor cooling shut-off valve; 15. Drive motor; 16. Drive motor cooling check valve; 17. Return water multi-way valve; 18. Return water temperature sensor; 19. Anchor bolt machine manual shut-off valve; 21. Return water check valve; 22. Return water manual valve; 23. Manual intake valve; 24. Intake filter; 25. Intake pressure sensor; 26. Water-gas switching valve assembly; 261. Solenoid directional valve; 262. Hydraulic three-way ball valve; 263. Water inlet check valve; 264. Air inlet check valve; 265. Hydraulic check valve; 266. Manual water balloon valve; 27. Airborne anchor bolt machine. Detailed Implementation

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] Those skilled in the art will understand that, unless specifically stated otherwise, the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, components, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, components, and / or combinations thereof. It should be understood that when we say a component is "connected" to another component, it can be directly connected to the other component or connected via an intermediate component. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items. The terms "first" and "second," etc., in this specification and claims are used to distinguish different objects, not to describe a particular order.

[0021] Reference Figure 1A preferred embodiment of the present invention provides an automatic switching control and protection system for water-air slag discharge of a rock bolting machine, comprising: multiple sets of water-air switching valve groups 26 for one-to-one connection with multiple sets of onboard rock bolting machines 27; an air supply system for supplying compressed air; a water supply system for supplying water to the roadway; and an alarm display device connected to the main control system of the rock bolting equipment. The water-air switching valve groups 26, the air supply system, and the water supply system are also connected to the main control system. The air supply system is also used to provide real-time feedback of the compressed air intake pressure to the main control system. The water supply system is also used to provide real-time feedback of the intake pressure of the filtered water in the roadway, the cooling water pressure and temperature formed after the roadway water cools the high-temperature fluid medium in the rock bolting equipment, and the return water pressure and temperature formed after the cooling water continues to cool the various drive motors 15 in the rock bolting equipment to the main control system. Each water-air switching valve group 26 is also connected to the air supply system and the water supply system, respectively. Under the control of the central control system, the water-air switching valve group 26 switches between its two operating positions based on the air intake pressure, water intake pressure, and cooling water pressure. This allows it to connect independently to the water supply system for water-based slag removal by the onboard anchor bolting machine 27, or simultaneously connect to both the water supply system and the air supply system for water-air mixed slag removal, or connect independently to the air supply system for air-based slag removal. An alarm display device, under the control of the central control system, displays and alarms for different abnormalities based on the air intake pressure, water intake pressure, cooling water pressure, cooling water temperature, return water pressure, and return water temperature.

[0022] This invention analyzes the functional characteristics and construction methods of the machine-mounted anchor bolting machine, a complete set of tunneling and anchoring equipment. Based on coal mine roadway construction experience, it proposes an automatic water-air slag discharge switching control and protection system for the anchor bolting machine. This system addresses the shortcomings of existing technologies by modifying the existing water-only slag discharge method to three slag discharge methods: water-only slag discharge, air-only slag discharge, and a mixed water-air slag discharge. Through a water-air switching valve group 26, hydraulic logic control enables fully automatic switching between water and air. Simultaneously, pressure and temperature monitoring alarms enable real-time monitoring of changes in water and air circuit conditions. Different alarms are triggered for different anomalies in complex water circuits, providing prompts and assistance to maintenance personnel, thereby significantly improving the efficiency of troubleshooting water circuit faults. Specifically: 1. Increased Applicability: The system of this invention, through the coordination of the water-air switching valve group 26, the water supply system, the air supply system and the main control system, can realize three different slag discharge methods: water slag discharge, air slag discharge, and water-air mixed slag discharge. That is, it can meet the slag discharge medium requirements under different roadway conditions and different construction needs. Moreover, the tunneling and anchoring complete set of equipment (hereinafter referred to as the complete set of equipment) can adapt to various actual needs without upgrading and modification, thereby greatly improving the applicability of the complete set of equipment. 2. Improved construction efficiency: The system of this invention can switch between three slag discharge states of the machine-mounted anchor bolt machine 27: water, air, and water-air mixture. This allows for the selection of a drilling method that matches different coal seams, significantly improving work efficiency and greatly reducing work intensity. 3. Simple and flexible operation: The system of this invention only requires a simple switch. The automatic switching of the slag discharge mode can be achieved through the water-air switching valve group 26 of the on-board anchor bolt machine 27. The entire operation process is simple and flexible. 4. Comprehensive monitoring and protection system: The system of this invention can collect and monitor the pressure and temperature data of water intake, air intake, cooling water and return water in real time, so as to provide comprehensive protection for the water and air circuits of the complete set of equipment. At the same time, it can display and broadcast different faults, provide fault prompts and handling suggestions for equipment maintenance personnel, thereby effectively improving the efficiency of maintenance and repair.

[0023] Optionally, such as Figure 1 and Figure 2 As shown, each group of water-air switching valves includes an electromagnetic directional valve 261 connected to the main control system, and a hydraulically controlled three-way ball valve 262 connected to the electromagnetic directional valve 261. The electromagnetic directional valve 261 is used to switch its working position under the action of the main control system to control the flow of oil into the control chamber of the hydraulically controlled three-way ball valve 262, thereby correspondingly controlling the switching of the hydraulically controlled three-way ball valve 262. Preferably, the switching of the electromagnetic directional valve 261 is also provided by a dedicated controller on the operating platform of the onboard anchor bolting machine 27 for manual operation. The P, A, and B positions of the hydraulically controlled three-way ball valve 262 are respectively connected to the onboard anchor bolting machine 27, the water supply system, and the air supply system, and the water supply system and the air supply system are connected before being connected to the A and B positions of the hydraulically controlled three-way ball valve 262, respectively. The function of the hydraulically controlled three-way ball valve 262 is to control the flow and switching of the fluid medium used for slag discharge. Figure 2 As shown, when operating in the initial position, the inlet of the hydraulic three-way ball valve 262 remains connected to the water supply system to ensure that water is used for slag discharge under normal operating conditions. This is in line with the current underground roadway construction conditions of most coal mines. When the hydraulic three-way ball valve 262 is in the right position, the slag discharge medium of L1 flows directly out from port L2. When the hydraulic three-way ball valve 262 is in the left position, the slag discharge medium of L1 and the slag discharge medium of port G are mixed and then flow out from port L2.

[0024] Preferably, such as Figure 2As shown, a water inlet check valve 263 is also provided in the pipeline connecting the hydraulic three-way ball valve 262 to the water supply system, and an air inlet check valve 264 is also provided in the pipeline connecting the hydraulic three-way ball valve 262 to the air supply system. In this preferred embodiment, the function of the air inlet check valve 264 is to ensure that the direction of the compressed air entering the water-air switching valve group 26 is constant, and that no water flows in reverse through the air inlet circuit; the function of the water inlet check valve 263 is to ensure that the direction of the water flow entering the water-air switching valve group 26 is constant, and that no compressed air flows in reverse through the water inlet circuit. The P position of the hydraulically controlled three-way ball valve 262 is connected to the onboard anchor bolting machine 27 via two parallel pipelines. One pipeline is equipped with a hydraulically controlled check valve 265, which provides a controller S port for connecting to the oil supply circuit of the anchor bolting equipment. The other pipeline is equipped with a manual water balloon valve 266. In this preferred embodiment, the manual water balloon valve 266 provides a manual switch to turn on and off the slag discharge medium when the onboard anchor bolting machine 27 is drilling manually, realizing the function of switching between automatic and manual slag discharge of the onboard anchor bolting machine 27. The hydraulically controlled check valve 265 provides an automatic switch to turn on and off the slag discharge medium when the onboard anchor bolting machine 27 is drilling automatically. The onboard anchor bolting machine 27 with automatic drilling function can provide an oil source from its working oil circuit to connect to the S port of the water-air switching valve group 26, realizing the function of switching between automatic and manual slag discharge of the onboard anchor bolting machine 27.

[0025] Optionally, such as Figure 1 As shown, the water supply system includes a main water inlet pipe for introducing water into the roadway, a cooler 7 installed in the main water inlet pipe, a water distribution multi-port block 11 connected to the outlet of the main water inlet pipe for water distribution, multiple cooling branches for cooling multiple sets of drive motors 15 respectively, a bypass branch, and a return water multi-port block 17 for connecting the cooling water of each cooling branch. The cooler 7 is used to exchange heat between the roadway water and the high-temperature fluid medium in the tunneling and anchoring equipment to cool the high-temperature fluid medium. Multiple cooling branches and bypass branches are connected in parallel between the water distribution multi-port block 11 and the return water multi-port block 17. The return water multi-port block 17 is connected to multiple sets of water-air switching valve groups 26 through multiple water inlet branches. During operation, water is introduced into the tunnel through the main inlet pipe, and after heat exchange with the high-temperature fluid medium inside the complete set of equipment via the cooler 7, it enters the water distribution multi-pass block 11. Then, it passes through multiple cooling branches and one bypass branch before entering the return water multi-pass block 17. In the cooling branches, the drive motor inside the complete set of equipment is cooled. Finally, the water from the return water multi-pass block 17 flows into each water-air switching valve group 26. In this optional scheme, the function of the water distribution multi-pass block 11 is to divert the inlet water, and the function of the return water multi-pass block 17 is to collect the water after cooling the drive motor.

[0026] Optionally, such as Figure 1As shown, the air supply system includes an air intake manifold for introducing compressed air, and the air outlet of the air intake manifold is connected to multiple sets of water-air switching valve groups 26 through multiple air intake branches. The alarm display device includes a main electrical control cabinet installed in the central control room of the tunneling and anchoring equipment, and a remote control connected to the main electrical control cabinet for synchronous display and alarm.

[0027] Optionally, such as Figure 1 As shown, the water supply system also includes an inlet pressure detector 4 connected to the main inlet pipe and a cooling pressure detector 9 connected to the multi-channel water distribution block 11. The inlet pressure detector 4 is located upstream of the cooler 7. The inlet pressure detector 4 and the cooling pressure detector 9 are also connected to the main control system. In this optional scheme, the inlet pressure detector 4 is used to monitor and record the inlet pressure; the cooling pressure detector 9 is used to monitor and record the inlet pressure after the cooler 7. The air supply system also includes an air pressure detector 25 connected to the main air intake pipe and connected to the main control system. In this optional scheme, the air pressure detector 25 is used to monitor and record the air intake pressure.

[0028] In this optional solution, the system of the present invention can also provide automatic pop-up windows and alarm protection for abnormal water and air intake, as detailed below: 1. Water Pressure High / Low Abnormality Protection: When the data collected by the inlet water pressure detector 4 or the cooling pressure detector 9 is not within the normal inlet water pressure range stored in the main control system, the main control system will display "Inlet Water Pressure Abnormal" in a pop-up window on both the main control cabinet and the remote control, and announce the abnormality. If the abnormality is not resolved within a set time after the announcement, the entire tunneling and anchoring equipment will be automatically powered off. Specifically, when the data collected by the inlet water pressure detector 4 and the cooling pressure detector 9 is lower than 8 bar or higher than 25 bar, the main control cabinet and the remote control will display "Inlet Water Pressure Abnormal" in a pop-up window and announce the abnormality. The entire equipment will be automatically powered off 30 seconds after the abnormality announcement. 2. High / Low Pressure Abnormal Protection: When the data collected by the inlet pressure detector 25 is not within the normal compressed air pressure range stored in the main control system, the main control system will display "Abnormal Inlet Pressure" on both the remote control and the main electrical control cabinet screens and broadcast an alarm. Simultaneously, if the solenoid directional valve 261 in the water-air switching valve group 26 is also energized (i.e., the water-air switching valve group 26 is in a "water-air mixed" state), and the abnormality is not resolved within the set time after the alarm broadcast, the entire tunneling and anchoring equipment will automatically shut off power. Specifically, when the data collected by the inlet pressure detector 25 is below 5 bar or above 15 bar, both the remote control and the main electrical control cabinet screens will display "Abnormal Inlet Pressure" and broadcast an alarm. When the solenoid directional valve 261 in the water-air switching valve group 26 is not energized, it is considered that no compressed air is being used, and only the remote control and the main electrical control cabinet display will alarm. When the solenoid directional valve 261 in the water-air switching valve group 26 is energized, the entire equipment will automatically shut off power 30 seconds after the alarm. 3. Automatic Switching: When the data collected by the inlet water pressure detector 4 is in the low pressure range within the normal pressure range of the roadway water intake and the data collected by the air intake pressure detector 25 is in the normal pressure range of compressed air, a pop-up window will appear on both the remote control and the main electrical control cabinet screens, displaying "Recommended Water-Air Mixing". Clicking "Confirm" on both the remote control and the main electrical control cabinet will automatically switch the water-air switching valve group 26 to water-air mixed slag discharge. If "Confirm" is not clicked, normal operation will continue. Clicking "Reset" will clear the pop-up window. Specifically, when the data collected by the inlet water pressure detector 4 is between 8-10 bar and the data collected by the air intake pressure detector 25 is between 5-15 bar, a pop-up window will appear on both the remote control and the main electrical control cabinet screens, displaying "Recommended Water-Air Mixing". Clicking "Confirm" on both the remote control and the main electrical control cabinet will automatically switch to water-air mixed slag discharge. If not clicked, normal operation will continue. Clicking "Reset" will clear the pop-up window.

[0029] In this optional solution, such as Figure 1 As shown, the water supply system also includes a cooling temperature detector 10 connected to the water distribution multi-channel block 11 and a return water temperature detector 18 connected to the return water multi-channel block 17, and the cooling temperature detector 10 and the return water temperature detector 18 are respectively connected to the main control system. In this optional scheme, the cooling temperature detector 10 is used to monitor and record the inlet water temperature after the cooler 7; the return water temperature detector 18 is used to monitor and record the cooling water temperature after the cooling drive motor 15.

[0030] In this optional solution, such as Figure 1As shown, the water supply system also includes a manual water inlet valve 1, a water inlet filter 2, a visual pressure gauge 3, a water pressure reducing valve 5, and a water overflow valve 6, which are sequentially arranged in the main water inlet pipe and upstream of the cooler 7. In this optional scheme, the manual water inlet valve 1 controls the opening and closing of the main water inlet, the water inlet filter 2 filters the water supplied to the tunnel, the visual pressure gauge 3 facilitates visual observation of the water inlet pressure, and the water pressure reducing valve 5 and the water overflow valve 6 limit the maximum pressure of the water inlet to the tunnel to prevent damage to the water circuit components. The water supply system also includes a cooling visual pressure gauge 8 connected to the water distribution multi-channel block 11, which facilitates visual observation of the water inlet pressure after the cooler. The water supply system also includes a drive motor cooling shut-off valve 14 and a drive motor cooling check valve 16, which are sequentially arranged in each cooling branch. The drive motor cooling shut-off valve 14, the drive motor 15, and the drive motor cooling check valve 16 form a one-way cooling water channel for cooling the drive motor. The water supply system also includes a bypass manual shut-off valve 12 and a bypass check valve 13 sequentially arranged in the bypass branch. The function of the bypass manual shut-off valve 12 and the bypass check valve 13 is to ensure that the water flow from the water distribution multi-pass block 11 can bypass into the return water multi-pass block 17, preventing blockage of other cooling branches and thus preventing water flow obstruction. The water supply system also includes a return water branch connecting to the return water multi-pass block 17, and a return water check valve 21 and a return water manual valve 22 sequentially arranged in the return water branch. The function of the return water check valve 21 and the return water manual valve 22 is to centrally process the cooled roadway water so that the cooling water can be discharged when the onboard anchor bolt machine 27 does not need water intake. The water supply system also includes an anchor bolt machine manual shut-off valve 19 arranged in the water intake branch between the return water multi-pass block 17 and each water-air switching valve group 26. The function of the anchor bolt machine manual shut-off valve 19 is to manually control the water intake to the onboard anchor bolt machine 27. The air supply system also includes an air intake manual valve 23 and an air intake filter 24 arranged sequentially in the air intake main pipe. The function of the air intake manual valve 23 and the air intake filter 24 is to provide filtered compressed air for the equipment.

[0031] In this optional solution, the system of the present invention can also provide automatic pop-up windows and alarm protection for abnormal water and air intake, specifically including: Cooling anomaly alarm: When the data collected by cooling pressure detector 9 is greater than that of inlet water pressure detector 4, the central control system will display "Cooling water pressure abnormal" on both the remote control and the main electrical control cabinet screens and broadcast an alarm. When the data collected by return water temperature detector 18 is less than that of cooling temperature detector 10, the central control system will display "Driver 15 cooling abnormal" on both the remote control and the main electrical control cabinet screens and broadcast an alarm. Specifically, when the data collected by the cooling pressure detector 9 is greater than that of the inlet water pressure detector 4, both the remote control and the main control cabinet screens will display a pop-up window showing "Abnormal cooling water pressure" and broadcast an alarm. At this time, the water path between the inlet manual valve 1 and the water distribution multi-channel block 11 needs to be checked. When the data collected by the return water temperature detector 18 is less than that of the cooling temperature detector 10, both the remote control and the main control cabinet screens will display a pop-up window showing "Abnormal drive cooling" and broadcast an alarm. At this time, the water path between the water distribution multi-channel block 11 and the return water multi-channel block 17 needs to be checked. This allows for segmented and area-specific monitoring, and different alarms are broadcast for different faults, providing fault prompts and handling suggestions for equipment maintenance personnel, effectively improving maintenance efficiency. In addition, the system of this invention can comprehensively protect the equipment's water and air paths by collecting and monitoring data of inlet water, inlet air, and cooling water in real time.

[0032] The system of this invention mainly divides the selection and automatic switching of slag discharge medium and method during drilling by the airborne anchor bolting machine 27 into three modes: 1. Water discharge of slag: When the solenoid directional valve 261 of the water-gas switching valve group 26 is in the initial position, the hydraulic three-way ball valve 262 is in the right position, and the water in L1 flows directly out from the L2 port, ensuring that water is used to discharge slag under normal working conditions, which meets the current underground roadway construction conditions of most coal mines. II. Water-Air Mixed Slag Discharge: When the solenoid directional valve 261 in the water-air switching valve group 26 is energized, the hydraulically controlled three-way ball valve 262 operates in the left position. The slag discharge medium water at L1 and the slag discharge medium air at G port will mix and flow out from L2 port. When the water pressure or flow rate is low, using air to atomize the water flow can improve the slag discharge and dust suppression effect, which is suitable for use in some coal mine roadways that require relatively dry conditions or are not suitable for large amounts of water accumulation. III. Gas-driven Slag Removal: After closing the manual shut-off valve 19 of the anchor bolting machine, when the solenoid directional valve 261 in the water-gas switching valve group 26 is energized, the hydraulic three-way ball valve 262 operates in the left position. Only the slag removal medium gas from port G will mix and flow out from port L2, which is suitable for some coal mine roadways that require complete drying or are not suitable for water accumulation. For these less common construction conditions, the manual shut-off valve 19 of the anchor bolting machine needs to be closed manually. Manual confirmation can avoid misoperation.

[0033] A preferred embodiment of the present invention also provides a complete set of tunneling and anchoring equipment, which has an automatic switching control and protection system for water, air and slag discharge of the anchoring machine as described above. Thus, the complete set of tunneling and anchoring equipment of the present invention has a wide range of applications, high construction efficiency, simple and flexible operation, and comprehensive detection and protection.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An automatic switching control and protection system for water-air slag discharge in an anchor bolting machine, characterized in that, include: Multiple sets of water-air switching valve groups (26) are used to connect to multiple sets of airborne anchor bolt machines (27), an air supply system for supplying compressed air, a water supply system for supplying water into the roadway, and an alarm display device connected to the main control system of the tunneling and anchoring equipment. The water-air switching valve groups (26), the air supply system and the water supply system are also connected to the main control system. The air supply system is also used to feed back the intake pressure of the compressed air inside to the central control system in real time; The water supply system is also used to feed back the pressure of the water after the water in the inner tunnel is filtered, the pressure and temperature of the cooling water formed after the water in the tunnel cools the high temperature fluid medium in the tunnel anchoring equipment, and the return water pressure and temperature of the return water formed after the cooling water continues to cool the various drive motors (15) in the tunnel anchoring equipment to the main control system in real time. Each water-air switching valve group (26) is also connected to the air supply system and the water supply system respectively. The water-air switching valve group (26) is used to switch between its two working positions according to the air pressure, water pressure and cooling water pressure under the action of the main control system. It can connect to the water supply system alone to make the airborne anchor bolt machine (27) perform water discharge, or connect to the water supply system and the air supply system at the same time to make the airborne anchor bolt machine (27) perform water-air mixed discharge, or connect to the air supply system alone to make the airborne anchor bolt machine (27) perform air discharge. The alarm display device is used to display and alarm for different abnormalities based on the intake pressure, intake water pressure, cooling water pressure, cooling water temperature, return water pressure, and return water temperature under the control of the central control system.

2. The automatic switching control and protection system for water-air slag discharge of the anchor bolting machine according to claim 1, characterized in that, Each water-gas switching valve group includes a solenoid directional valve (261) connected to the main control system, and a hydraulic three-way ball valve (262) connected to the solenoid directional valve (261). The electromagnetic reversing valve (261) is used to switch its working position under the action of the main control system to control the flow of oil entering the control chamber of the hydraulic three-way ball valve (262), thereby controlling the reversing of the hydraulic three-way ball valve (262) accordingly. The P, A, and B positions of the hydraulic control three-way ball valve (262) are respectively connected to the airborne anchor bolt machine (27), the water supply system, and the air supply system. The water supply system and the air supply system are connected before being connected to the A and B positions of the hydraulic control three-way ball valve (262).

3. The automatic switching control and protection system for water-air slag discharge of the anchor bolting machine according to claim 2, characterized in that, A water inlet check valve (263) is also provided in the pipeline connecting the hydraulic three-way ball valve (262) to the water supply system, and an air inlet check valve (264) is also provided in the pipeline connecting the hydraulic three-way ball valve (262) to the air supply system. The P position of the hydraulic three-way ball valve (262) is connected to the airborne anchor bolt machine (27) through two parallel pipelines, one of which is equipped with a hydraulic check valve (265). The hydraulic check valve (265) provides control over its S port for connecting the oil supply circuit of the drilling and anchoring equipment. The other pipeline is equipped with a manual water balloon valve (266).

4. The automatic switching control and protection system for water-air slag discharge of the anchor bolting machine according to claim 1, characterized in that, The water supply system includes a main water inlet pipe for introducing water into the roadway, a cooler (7) installed in the main water inlet pipe, a water distribution multi-pass block (11) connected to the outlet of the main water inlet pipe and used for water distribution, multiple cooling branches for cooling multiple sets of drive motors (15) respectively, a bypass branch, and a return water multi-pass block (17) for connecting the cooling water of each cooling branch. The cooler (7) is used to exchange heat between the water entering the roadway and the high-temperature fluid medium in the tunneling and anchoring equipment in order to cool the high-temperature fluid medium. Multiple cooling branches and bypass branches are connected in parallel between the water distribution multi-pass block (11) and the return water multi-pass block (17); The return water multi-channel block (17) is connected to multiple water-air switching valve groups (26) through multiple water inlet branches.

5. The automatic switching control and protection system for water-air slag discharge of the anchor bolting machine according to claim 4, characterized in that, The air supply system includes an air intake manifold for introducing compressed air, and the air outlet of the air intake manifold is connected to multiple sets of water-air switching valve groups (26) through multiple air intake branches. The alarm display device includes a main electrical control cabinet installed in the central control room of the tunneling and anchoring equipment, and a remote control connected to the main electrical control cabinet for synchronous display and alarm.

6. The automatic switching control and protection system for water-air slag discharge of the anchor bolting machine according to claim 5, characterized in that, The water supply system also includes a water pressure detector (4) connected to the main water inlet pipe and a cooling pressure detector (9) connected to the water distribution multi-channel block (11). The water pressure detector (4) is located upstream of the cooler (7). The water pressure detector (4) and the cooling pressure detector (9) are also connected to the main control system. The intake supply system also includes an intake pressure detector (25) connected to the intake manifold, and the intake pressure detector (25) is connected to the main control system.

7. The automatic switching control and protection system for water-air slag discharge of the anchor bolting machine according to claim 6, characterized in that, When the data collected by the inlet pressure detector (4) or the cooling pressure detector (9) is not within the normal pressure range of the roadway inlet stored in the main control system, the main control system will make the screen of the main power control cabinet and the remote control display "abnormal inlet pressure" and broadcast it. If the abnormality is not handled within a set time after the abnormality is broadcast, the tunneling and anchoring equipment will be automatically powered off. When the data collected by the intake pressure detector (25) is not within the normal compressed air pressure range stored in the main control system, the main control system will display "abnormal intake pressure" on the screens of both the remote control and the main control cabinet and broadcast it. At the same time, when the electromagnetic reversing valve in the water-air switching valve group (26) is also energized, that is, when the water-air switching valve group (26) is in the "water-air mixing" state, if the abnormality is not handled within a set time after the abnormality is broadcast, the tunneling and anchoring equipment will be automatically powered off. When the data collected by the water inlet pressure detector (4) is in the low pressure range within the normal pressure range of the roadway water inlet and the data collected by the air inlet pressure detector (25) is in the normal pressure range of compressed air, the remote control and the main control cabinet will both display a pop-up window that says "Water-air mixing is recommended". At this time, clicking "Confirm" on the remote control and the main control cabinet will automatically switch the water-air switching valve group (26) to mix water and air to discharge slag. If "Confirm" is not clicked, the system will continue to work normally. Clicking "Reset" will clear the pop-up window.

8. The automatic switching control and protection system for water-air slag discharge of the anchor bolting machine according to claim 6, characterized in that, The water supply system also includes a cooling temperature detector (10) connected to the water distribution multi-channel block (11) and a return water temperature detector (18) connected to the return water multi-channel block (17), and the cooling temperature detector (10) and the return water temperature detector (18) are respectively connected to the main control system; When the data collected by the cooling pressure detector (9) is greater than that of the inlet water pressure detector (4), the main control system will display "cooling water pressure abnormal" on the screens of both the remote control and the main control cabinet and broadcast the announcement. When the data collected by the return water temperature detector (18) is less than that of the cooling temperature detector (10), the main control system will display "Driver (15) cooling abnormal" in the pop-up window on the remote control and the main control cabinet screen and broadcast the message.

9. The automatic switching control and protection system for water-air slag discharge of the anchor bolting machine according to claim 6, characterized in that, The water supply system also includes a water inlet manual valve (1), a water inlet filter (2), a water inlet visual pressure gauge (3), a water circuit pressure reducing valve (5), and a water circuit overflow valve (6), which are sequentially installed in the water inlet main pipe and located upstream of the cooler (7). The water supply system also includes a cooling visual pressure gauge (8) that connects to the water distribution multi-channel block (11); The water supply system also includes a motor cooling shut-off valve (14) and a motor cooling check valve (16) arranged sequentially in each cooling branch. The water supply system also includes a bypass manual shut-off valve (12) and a bypass check valve (13) arranged sequentially in the bypass branch. The water supply system also includes a return water branch connected to the return water multi-channel block (17), and a return water check valve (21) and a return water manual valve (22) arranged in sequence in the return water branch. The water supply system also includes a manual shut-off valve (19) for the anchor bolt machine in the water supply branch between the return water multi-pass block (17) and each water-air switching valve group (26). The intake supply system also includes an intake manual valve (23) and an intake filter (24) arranged sequentially in the intake main pipe.

10. A complete set of tunneling and anchoring equipment, characterized in that, It has an automatic switching control and protection system for water and air slag discharge of the anchor bolting machine as described in any one of claims 1-9.

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