A flushing water quantity control system and control method applied to a rock drilling jumbo

Abstract

The application discloses a kind of flushing water quantity control system and control method applied to rock drilling jumbo, system includes: a variety of sensors, controller, display, solenoid valve, flushing water pump installed on rock drilling jumbo and flushing equipment;Method is: obtaining drilling state, drilling displacement value, the angle value of drilling and horizontal plane, flushing water quantity data, flushing water pressure data, display setting data control solenoid valve and flushing water pump open or close, obtain the real-time drilling speed of rock drilling machine and predict drill bit jam;And after controlling solenoid valve opens, according to the required flushing water quantity of setting data and real-time acquisition data accurate calculation of flushing equipment, and according to the required flushing water quantity generates the control instruction of flushing water pump adjustment rotating speed;When judging drill bit jam, flushing water pump rotating speed is adjusted in time or closed;The application adjusts flushing water quantity in real time according to the operation state of rock drilling jumbo, guarantees flushing effect, rock debris is discharged in time, reduces drill bit wear, sticking, drilling jamming phenomenon.

Description

Technical Field

[0001] This invention belongs to the field of drilling technology for rock drilling rigs, specifically relating to a flushing water volume control system and control method applied to rock drilling rigs. Background Technology

[0002] Rock drilling rigs are mainly used in tunnel and underground engineering. In drill-and-blast construction, they can improve drilling efficiency, save labor, reduce production costs, and improve working conditions and reduce labor intensity for workers. During drilling, the flushing system continuously washes the borehole to remove broken rock debris. If flushing is insufficient, the rock debris cannot be completely removed from the bottom of the hole, causing the drill bit to repeatedly grind against it, resulting in unnecessary power loss, reduced drilling speed, accelerated drill bit wear, reduced lifespan, and even drill jamming, affecting construction efficiency. Secondly, the water provided by the flushing system cools the drill bit, reducing wear and friction between the drill bit and the rock. The flushing system also reduces dust during rock drilling operations, effectively improving the working environment. However, more water from the flushing system is not necessarily better. Excessive water not only causes water accumulation at the construction site but also wastes water resources. Therefore, providing an appropriate amount of flushing water is crucial.

[0003] Traditional flushing systems typically have fixed water volume settings, which operators manually adjust based on site conditions and experience. However, due to human control, there is significant subjectivity, making precise water volume control difficult. Furthermore, operators cannot adjust the water volume in real time, resulting in a lag and failing to fundamentally solve the flushing problem. This leads to rock cuttings not being discharged from the borehole in a timely manner or water accumulation at the construction site, wasting water resources and increasing the operator's workload. Current technologies have improved flushing systems by connecting the flushing system to a main water solenoid valve, allowing for on / off water supply and significantly reducing water waste. However, this only achieves water conservation and does not improve cuttings removal efficiency. Existing cuttings removal devices use high-pressure water delivery for rock cuttings flushing. This device cannot be used for borehole cleaning when drilling rigs are in operation. When the drill bit becomes clogged, none of these technologies can provide timely feedback, potentially leading to pump failure or pipe bursts. Summary of the Invention

[0004] Purpose of the invention: To overcome the shortcomings of the prior art, this invention provides a flushing water volume control system and method for rock drilling rigs. Based on data monitored by various sensors on the rock drilling rig, the flushing flow rate is accurately calculated, and the pump speed is dynamically adjusted to achieve automatic control of the flushing water volume. This fully removes rock cuttings from the borehole, prevents repeated grinding of rock cuttings, reduces drill bit jamming, improves the utilization rate of flushing water, reduces water area in the work area, and saves water resources. No manual adjustment is required during operation, achieving intelligent control of the flushing water volume and reducing labor intensity. When the drill bit becomes clogged, the controller automatically starts / stops the flushing water pump operation according to the flushing water pressure, preventing pump damage or pipe bursts.

[0005] Technical Solution: Firstly, this invention provides a flushing water volume control system for rock drilling rigs, comprising:

[0006] The proximity switch, displacement sensor, and tilt sensor are respectively installed on the drilling arm mechanism of the rock drilling rig; the flushing water volume sensor and flushing water pressure sensor, controller, display, solenoid valve, and flushing water pump are respectively installed on the flushing equipment.

[0007] The proximity switch, displacement sensor, and tilt sensor are used to collect the drilling status, drilling displacement value, and the angle between the borehole and the horizontal plane of the drilling rig's drilling arm mechanism in real time, respectively.

[0008] The flushing water volume sensor and the flushing water pressure sensor are used to collect flushing water volume data and flushing water pressure data of the flushing equipment in real time, respectively.

[0009] The controller is electrically connected to a proximity switch, displacement sensor, tilt sensor, flushing water volume sensor, flushing water pressure sensor, solenoid valve, flushing water pump, and display to receive drilling status, drilling displacement value, the angle between the borehole and the horizontal plane, flushing water volume data, flushing water pressure data, and display settings data. Based on the received data, it generates corresponding control commands for the solenoid valve and flushing water pump in real time to control the opening and closing status of the solenoid valve and water pump, as well as the water pump speed, thereby adjusting the flushing water volume in a timely manner. It also monitors drill bit blockage in real time based on the received data and outputs the results to the display.

[0010] The display is used to manually input relevant settings data for drilling and flushing, and to output drill bit blockage prompts;

[0011] The solenoid valve is installed on the flushing water circuit of the flushing equipment to control the flow of flushing water.

[0012] The flushing water pump is installed at the outlet of the solenoid valve to control the flushing water pressure and volume.

[0013] In a further embodiment, the proximity switch is mounted on the push beam of the drilling arm mechanism of the rock drilling rig and faces the tail of the rock drill, and is used to collect distance data of the rock drill relative to the proximity switch.

[0014] The displacement sensor is installed at the rock drill support of the rock drilling rig's drill arm mechanism to collect displacement data of the rock drill relative to the rock drill support and determine the drilling displacement value.

[0015] The tilt sensor is installed at the bottom of the propulsion beam of the drilling rig arm mechanism to collect the angle between the propulsion beam and the horizontal plane, and obtain the angle value between the borehole and the horizontal plane.

[0016] In a second aspect, the present invention provides a method for controlling the flushing water volume of a rock drilling rig, comprising:

[0017] The drilling status, drilling displacement value, the angle between the borehole and the horizontal plane, flushing water volume data, flushing water pressure data, and display settings data are acquired in real time.

[0018] Based on the drilling status, determine whether the solenoid valve and flushing water pump are open or closed; based on the drilling displacement value, obtain the real-time drilling speed of the rock drill; and based on the flushing water volume data and flushing water pressure data, determine whether the drill bit is blocked.

[0019] After the control solenoid valve is opened, the required flushing water volume for the flushing equipment is calculated based on the display settings, the angle between the borehole and the horizontal plane, and the real-time drilling speed. Then, a control command to adjust the speed of the flushing water pump is generated based on the required flushing water volume.

[0020] When a blockage is detected in the drill bit, a control command is generated to adjust the speed or shut down the flushing water pump based on the flushing water volume and flushing water pressure data.

[0021] In a further embodiment, the method for acquiring drilling status, drilling displacement value, the angle between the borehole and the horizontal plane, flushing water volume data, flushing water pressure data, and display setting data in real time includes:

[0022] The drilling status of the rock drill is obtained by collecting data on the distance between the rock drill and the proximity switch. The drilling status includes the start of drilling and the end of drilling. When the rock drill moves away from the proximity switch, it is determined to be the start of drilling. When the rock drill moves back to the sensing position of the proximity switch, it is determined to be the end of drilling.

[0023] The drilling displacement value is obtained by collecting displacement data of the rock drill relative to the rock drill support.

[0024] By collecting the angle between the propulsion beam and the horizontal plane, it is determined whether the borehole is at an angle of elevation or depression relative to the horizontal plane, and the angle value between the borehole and the horizontal plane is determined. The angle value of the elevation angle is displayed as positive, and the angle value of the depression angle is displayed as negative.

[0025] The flushing water volume and flushing water pressure data are determined by collecting real-time data on the water volume and water pressure of the flushing equipment's flushing water path.

[0026] The display settings include borehole diameter, flushing water loss coefficient, and basic flushing flow rate during horizontal drilling, and can be set and saved via the display input keys.

[0027] In a further embodiment, the method for determining whether the solenoid valve and flushing water pump are turned on or off based on the obtained drilling status is as follows:

[0028] When the drilling state is in the start drilling state, both the control solenoid valve and the flushing water pump are turned on;

[0029] When the drilling state is the drilling end state, both the control solenoid valve and the flushing water pump are turned off.

[0030] In a further embodiment, the method for obtaining the real-time drilling speed of the rock drill based on the drilling displacement value is as follows:

[0031] The real-time drilling speed is calculated based on the drilling displacement value and the time of displacement.

[0032] In a further embodiment, the method for determining whether the drill bit is blocked based on flushing water volume data and flushing water pressure data is as follows:

[0033] When the flushing water volume decreases and the flushing water pressure increases, it is determined that the drill bit is blocked. When the flushing water pressure rises to a critical value, it is determined that the drill bit is severely blocked.

[0034] If both the flushing water volume and flushing water pressure data are within the normal range, it can be determined that the drill bit is not blocked.

[0035] In a further embodiment, after the solenoid valve is opened, the method for calculating the required flushing water volume for the flushing equipment based on the display settings, the angle between the borehole and the horizontal plane, and the real-time drilling speed is as follows:

[0036] The required flushing water volume for the flushing equipment is calculated based on the borehole diameter, flushing water loss coefficient, foundation flushing flow rate during horizontal drilling, the angle between the borehole and the horizontal plane, and the real-time drilling speed.

[0037] The formula for calculating the required flushing water volume for the flushing equipment is as follows:

[0038]

[0039] In the formula, Q is the real-time flushing water volume, D is the borehole diameter, K is the flushing water loss coefficient, Q0 is the basic flushing flow rate during horizontal drilling, which is determined according to the size of the drilled rock cuttings and is calibrated in the early stage of formal drilling, v is the real-time drilling speed, and θ is the angle between the borehole and the horizontal plane, with the elevation angle being positive and the depression angle being negative.

[0040] In a further embodiment, the method for generating control commands to adjust the rotation speed of the flushing water pump based on the required flushing water volume is as follows:

[0041] Compare the obtained flushing water volume data with the required flushing water volume to determine whether the flushing water volume has increased;

[0042] When it is determined that the flushing water volume needs to be increased, a control command to speed up the flushing water pump is generated to increase the speed of the flushing water pump.

[0043] When it is determined that the flushing water volume should be reduced, a control command to reduce the speed of the flushing water pump is generated to reduce the speed of the flushing water pump in real time.

[0044] In a further embodiment, when it is determined that the drill bit is blocked, the method for generating a control command to adjust the speed or shut down the flushing water pump based on the flushing water volume data and flushing water pressure data is as follows:

[0045] When a blockage is detected in the drill bit, the speed of the flushing water pump is automatically increased to attempt to flush out the blockage.

[0046] If the flushing water pressure continues to increase and reaches the critical value set by the controller, it is determined that the drill bit is severely blocked. The water pump is then turned off, and a blockage warning is displayed on the screen to inform the user to arrange for manual handling in a timely manner.

[0047] If the flushing water pressure decreases to within the normal threshold, it indicates that the drill bit is not blocked. Adjust the flushing water pump speed according to the required flushing water volume.

[0048] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0049] (1) Adjust the flushing water volume in real time according to the working status of the rock drilling rig to ensure the flushing effect, timely discharge of rock debris, and reduce drill bit wear and stuck drill phenomenon.

[0050] (2) Accurately control the amount of flushing water, improve the utilization rate of flushing water, reduce water accumulation at the construction site, and save water resources.

[0051] (3) No manual adjustment is required, reducing the labor intensity of operators and realizing intelligent control of flushing water volume.

[0052] (4) The feedback data from multiple sensors on the flushing equipment are analyzed and judged to determine the trend of water pressure and water volume changes, obtain the automatic sensing results of drill bit blockage, monitor the drill bit blockage in real time, and automatically shut down the flushing water pump according to the flushing water pressure to prevent the water pump from being damaged or the pipe from bursting. Attached Figure Description

[0053] Figure 1 This is a hardware embodiment diagram of the flushing water volume control system of the present invention applied to a rock drilling rig;

[0054] Figure 2 This is a topology diagram of the flushing water volume control system of the present invention;

[0055] Figure 3 This is a flowchart of the flushing water volume control method of the present invention.

[0056] In the attached diagram: rock drill 11, rock drill support 12, propulsion beam 13, drill bit 14, proximity switch 21, displacement sensor 22, tilt sensor 23, flushing water volume sensor 24, flushing water pressure sensor 25, flushing water pump 31, solenoid valve 32, flushing water path 33. Detailed Implementation

[0057] To better understand the technical content of the present invention, the technical solution of the present invention will be further introduced and explained below with reference to specific embodiments, but is not limited thereto.

[0058] Existing rock drilling rig flushing systems, in order to address water conservation, connect the water-saving system to the main water solenoid valve 32 to allow for on-demand opening and closing of the water supply, thus reducing water waste. However, this method cannot achieve efficient slag removal. Therefore, existing rock drilling rigs have also been optimized and improved from the perspective of slag removal, employing a water-air mixing method for slag removal and incorporating a slag removal device. During drilling, high-pressure water is delivered to the bottom of the hole through the hollow drill rod and drill bit 14 to flush out the rock cuttings, solving the slag removal efficiency problem. However, this improvement has limitations in practical application; it cannot perform slag removal during drilling, thus still not fundamentally solving the problem of rock drilling rig flushing efficiency.

[0059] The following is combined with Figure 1 Further explanation of the present invention: A flushing water control system for a rock drilling rig. Based on data monitored by various sensors on the rock drilling rig, the flushing flow rate is accurately calculated, and the water pump speed is dynamically adjusted to achieve automatic control of the flushing water volume. This fully removes rock cuttings from the borehole, prevents repeated grinding of rock cuttings, reduces drill bit jamming, and improves the utilization rate of flushing water. The flushing water control system includes:

[0060] The controller, display, solenoid valve 32, flushing water pump 31, proximity switch 21, displacement sensor 22, tilt sensor 23, flushing water volume sensor 24 and flushing water pressure sensor 25 are respectively installed on the flushing equipment;

[0061] The proximity switch 21, displacement sensor 22, and tilt sensor 23 are used to collect the drilling status, drilling displacement value, and the angle between the borehole and the horizontal plane of the drilling rig in real time, respectively.

[0062] The flushing water volume sensor 24 and the flushing water pressure sensor 25 are used to collect flushing water volume data and flushing water pressure data of the flushing equipment in real time, respectively.

[0063] The controller is electrically connected to proximity switch 21, displacement sensor 22, tilt sensor 23, flushing water volume sensor 24, flushing water pressure sensor 25, solenoid valve 32, flushing water pump 31, and display to receive drilling status, drilling displacement value, the angle between the borehole and the horizontal plane, flushing water volume data, flushing water pressure data, and display setting data. Based on the received data, it generates corresponding control commands for solenoid valve 32 and flushing water pump 31 in real time to control the opening and closing status of solenoid valve 32 and water pump, and the speed of water pump, thereby adjusting the flushing water volume in a timely manner; and monitors the blockage of drill bit 14 in real time based on the received data and outputs the results to the display.

[0064] The display is used for manually inputting relevant settings data for drilling and flushing, and outputs a blockage warning for drill bit 14;

[0065] Solenoid valve 32 is installed on the flushing water circuit 33 of the flushing equipment to control the flow of flushing water;

[0066] The flushing water pump 31 is installed at the inlet of the solenoid valve 32 to control the flushing water pressure and volume;

[0067] In this embodiment, the flushing water volume during drilling is mainly related to the borehole diameter, the angle between the borehole and the horizontal plane, the drilling speed of the rock drill 11, the integrity of the rock, and the size of the drilled cuttings. To further illustrate the precise monitoring of the drilling rig's operation by the proximity switch 21, displacement sensor 22, and tilt sensor 23, the preferred installation positions of the proximity switch 21, displacement sensor 22, and tilt sensor 23 on the drilling arm mechanism of the drilling rig are as follows:

[0068] The proximity switch 21 is installed on the push beam 13 of the drilling arm mechanism of the rock drilling rig and faces the tail of the rock drill 11. It is used to collect distance data of the rock drill 11 relative to the proximity switch 21.

[0069] The displacement sensor 22 is installed at the rock drill 11 support of the rock drill arm mechanism of the rock drilling rig, and is used to collect the displacement data of the rock drill 11 relative to the rock drill 11 support to determine the drilling displacement value.

[0070] The tilt sensor 23 is installed at the bottom of the push beam 13 of the drilling arm mechanism of the rock drilling rig. It is used to collect the angle between the push beam 13 and the horizontal plane to obtain the angle value between the borehole and the horizontal plane.

[0071] Combination Figures 2 to 3 To further explain, the flushing water volume control system is based on the accurate calculation of flushing water volume and the dynamic adjustment of the water pump speed to achieve automatic control of flushing water volume. The steps of the method are as follows:

[0072] The drilling status, drilling displacement value, the angle between the borehole and the horizontal plane, flushing water volume data, flushing water pressure data, and display settings data are acquired in real time.

[0073] Based on the drilling status, determine whether the solenoid valve 32 and the flushing water pump 31 are open or closed; based on the drilling displacement value, obtain the real-time drilling speed of the rock drill 11; and based on the flushing water volume data and flushing water pressure data, determine whether the drill bit 14 is blocked.

[0074] After the control solenoid valve 32 is opened, the required flushing water volume of the flushing equipment is calculated based on the display settings, the angle between the borehole and the horizontal plane, and the real-time drilling speed. Then, a control command is generated to adjust the speed of the flushing water pump 31 according to the required flushing water volume.

[0075] When it is determined that the drill bit 14 is blocked, a control command is generated to adjust the speed or shut down the flushing water pump 31 based on the flushing water volume data and flushing water pressure data.

[0076] The method in this embodiment can accurately calculate based on the operation monitoring data of the rock drilling rig, thereby adjusting the flushing water volume in real time, ensuring the flushing effect, timely removal of rock cuttings, and reducing drill bit wear and stuck drill phenomena.

[0077] When monitoring the operation of the rock drilling rig, the drilling status, drilling displacement value, the angle between the borehole and the horizontal plane, flushing water volume data, flushing water pressure data, and display settings data are acquired in real time. The steps are as follows:

[0078] The drilling status of the rock drill 11 is obtained by collecting distance data of the rock drill 11 relative to the proximity switch 21. The drilling status includes the start of drilling and the end of drilling. When the rock drill 11 moves away from the proximity switch 21, it is determined to be the start of drilling. When the rock drill 11 retracts to the sensing position of the proximity switch 21, it is determined to be the end of drilling.

[0079] The drilling displacement value is obtained by collecting the displacement data of the rock drill 11 relative to the rock drill support 12.

[0080] By collecting the angle between the propulsion beam 13 and the horizontal plane, it is determined whether the borehole is at an angle of elevation or depression relative to the horizontal plane, thus determining the angle value between the borehole and the horizontal plane. The angle value of the elevation angle is displayed as positive, and the angle value of the depression angle is displayed as negative. In practical applications, the applicant found that when the borehole diameter is large, more cuttings are produced during drilling, requiring an increase in the flushing water volume. When the angle between the borehole and the horizontal plane is an elevation angle (positive), the cuttings are more easily flushed out under the action of gravity, and the flushing water volume can be appropriately reduced. However, when the angle is a depression angle (negative), the cuttings are more likely to settle at the bottom of the hole under the action of gravity, requiring an increase in the flushing water volume to flush out the cuttings.

[0081] The flushing water volume and flushing water pressure data are determined by collecting real-time water volume and water pressure data of the flushing equipment flushing water channel 33.

[0082] The display settings include borehole diameter, flushing water loss coefficient, and basic flushing flow rate during horizontal drilling, and can be set and saved via the display input keys.

[0083] In this embodiment, before the drilling operation begins, the rock drill 11 manually inputs the borehole diameter, flushing water loss coefficient, and basic flushing flow rate during horizontal drilling via the display, and then clicks "confirm" to save the settings successfully.

[0084] Existing technologies use a water-air mixture for slag removal and employ a slag removal device. During drilling, the rock drilling rig delivers high-pressure water to the bottom of the hole via the hollow drill rod and drill bit 14 to flush out the rock cuttings. Therefore, this device cannot perform drilling slag removal while the rock drilling rig is drilling. Furthermore, existing fixed-volume flushing methods cannot adapt to the flushing requirements of different working conditions. Sometimes, to achieve better slag removal, the flushing system uses excessive water, causing water accumulation and water waste at the construction site. However, water conservation often reduces slag removal efficiency. Therefore, only by combining the control of flushing water volume with the drilling operation of the rock drill 11 in a functional logic design can the water-saving effect and slag removal efficiency of the flushing system be maximized while meeting the drilling efficiency requirements of the rock drill 11, and reducing the operator's workload. The preferred method is to determine whether the solenoid valve 32 and the flushing water pump 31 are open or closed based on the obtained drilling status. The specific steps are as follows:

[0085] When the drilling state is the start drilling state, both the control solenoid valve 32 and the flushing water pump 31 are turned on.

[0086] When the drilling state is the drilling end state, both the control solenoid valve 32 and the flushing water pump 31 are closed.

[0087] In practical applications, the applicant found that when the rock drill 11 drills at a high speed, a large amount of rock debris is generated, requiring an increase in the flushing water volume to remove the rock debris in a timely manner, preventing the drill bit 14 from repeatedly grinding the rock debris, reducing the drilling speed, accelerating the wear of the drill bit 14, and causing the drill to get stuck. Therefore, the preferred method for obtaining the real-time drilling speed of the rock drill 11 based on the drilling displacement value is as follows:

[0088] The real-time drilling speed is calculated based on the drilling displacement value and the time of displacement.

[0089] The applicant also found that when the rock integrity is poor, the flushing water volume will be somewhat reduced, so the flushing water volume needs to be increased appropriately; when the rock fragments under drilling have a large particle size, the flushing water volume also needs to be increased. Therefore, the preferred method for calculating the required flushing water volume of the flushing equipment after controlling the solenoid valve 32 to open, based on the display settings, the angle between the borehole and the horizontal plane, and the real-time drilling speed, is as follows:

[0090] The required flushing water volume for the flushing equipment is calculated based on the borehole diameter, flushing water loss coefficient, foundation flushing flow rate during horizontal drilling, the angle between the borehole and the horizontal plane, and the real-time drilling speed.

[0091] The formula for calculating the required flushing water volume for the flushing equipment is as follows:

[0092]

[0093] In the formula, Q is the real-time flushing water volume, D is the borehole diameter, K is the flushing water loss coefficient, Q0 is the basic flushing flow rate during horizontal drilling, which is determined according to the size of the drilled rock cuttings and is calibrated in the early stage of formal drilling, v is the real-time drilling speed, and θ is the angle between the borehole and the horizontal plane, with the elevation angle being positive and the depression angle being negative.

[0094] Preferably, the method for generating control commands to adjust the rotation speed of the flushing water pump 31 according to the required flushing water volume is as follows:

[0095] Compare the obtained flushing water volume data with the required flushing water volume to determine whether the flushing water volume has increased;

[0096] When it is determined that the flushing water volume needs to be increased, a control command is generated to speed up the flushing water pump 31 to increase the speed of the flushing water pump 31.

[0097] When it is determined that the flushing water volume should be reduced, a control command for reducing the speed of the flushing water pump 31 is generated to reduce the speed of the flushing water pump 31 in real time.

[0098] This embodiment can accurately calculate the flushing water volume through the monitoring data received by the controller, automatically adjust the speed of the water pump, realize the real-time adjustment of the flushing water volume, ensure sufficient flushing water flow, and prevent insufficient flushing water from failing to flush out rock debris, or excessive flushing water from accumulating on site, resulting in water waste.

[0099] Existing flushing systems and slag removal devices do not have corresponding measures designed for borehole blockage. This invention, based on actual conditions, incorporates a predictive and intervention function for the common problem of drill bit 14 blockage during rock drilling by the rock drill 11. The preferred design determines whether drill bit 14 is blocked based on flushing water volume and pressure data, as detailed below:

[0100] When the flushing water volume data decreases and the flushing water pressure data increases, it is determined that the drill bit 14 is blocked. When the flushing water pressure data rises to the critical value, it is determined that the drill bit 14 is severely blocked.

[0101] When the flushing water volume and flushing water pressure data are both within the normal trend, it is determined that the drill bit 14 is not blocked.

[0102] Preferably, when it is determined that the drill bit 14 is blocked, the method for generating a control command to adjust the speed or shut down the flushing water pump 31 based on the flushing water volume data and flushing water pressure data is as follows:

[0103] When it is determined that the drill bit 14 is blocked, the speed of the flushing water pump 31 is automatically increased to try to flush out the blockage;

[0104] If the flushing water pressure continues to increase and reaches the critical value set by the controller, it is determined that the drill bit 14 is severely blocked. The water pump is turned off, and a blockage warning is output on the display to inform the user to arrange for manual handling in a timely manner.

[0105] If the flushing water pressure decreases to within the normal threshold, and it is confirmed that the drill bit 14 is not blocked, adjust the speed of the flushing water pump 31 according to the required flushing water volume.

[0106] This embodiment analyzes and judges the changing trends of water pressure and water volume by using feedback data from multiple sensors on the flushing equipment to obtain the automatic sensing results of the blockage of drill bit 14. In the early stage of blockage of drill bit 14, the water pressure is automatically increased and the speed of flushing water pump 31 is increased to try to flush out the blockage. If the flushing water pressure continues to increase and reaches the critical value set in the controller, it indicates that the outlet of drill bit 14 is severely blocked and manual handling is required. In order to avoid damage to the water pump and pipe bursting, the controller will automatically shut down flushing water pump 31, and the display will show that drill bit 14 is blocked, promptly reminding relevant personnel to clean drill bit 14.

[0107] In summary, this invention adjusts the flushing water volume in real time according to the operating status of the drilling rig, ensuring flushing effect, timely removal of rock cuttings, and reducing wear and jamming of the drill bit 14. It improves the utilization rate of flushing water while precisely controlling the flushing water volume, reducing on-site water accumulation and saving water resources. It eliminates the need for manual adjustment, achieving intelligent control of the flushing water volume and reducing the labor intensity of operators. Furthermore, it can monitor the blockage of the drill bit 14 in real time and automatically shut down the flushing water pump 31 according to the flushing water pressure, preventing pump damage or pipe bursts. Compared with existing technologies, this invention achieves water conservation while ensuring effective cuttings removal and drilling efficiency.

[0108] Embodiments of this application may be provided as methods, systems, or computer program products. Therefore, this application may take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0109] Embodiments of this application may be provided as methods, systems, or computer program products. Therefore, this application may take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0110] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0111] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1The function specified in one or more boxes.

[0112] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0113] The above description is only a preferred embodiment of the present invention. Without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A flush water volume control system for an underground drill jumbo, characterized in that include: The proximity switch, displacement sensor, and tilt sensor are respectively installed on the drilling arm mechanism of the rock drilling rig; the flushing water volume sensor and flushing water pressure sensor, controller, display, solenoid valve, and flushing water pump are respectively installed on the flushing equipment. The proximity switch, displacement sensor, and tilt sensor are used to collect the drilling status, drilling displacement value, and the angle between the borehole and the horizontal plane of the drilling rig's drilling arm mechanism in real time, respectively. The flushing water volume sensor and the flushing water pressure sensor are used to collect flushing water volume data and flushing water pressure data of the flushing equipment in real time, respectively. The controller is electrically connected to a proximity switch, displacement sensor, tilt sensor, flushing water volume sensor, flushing water pressure sensor, solenoid valve, flushing water pump, and display to receive drilling status, drilling displacement value, the angle between the borehole and the horizontal plane, flushing water volume data, flushing water pressure data, and display settings data. Based on the received data, it generates corresponding control commands for the solenoid valve and flushing water pump in real time to control the opening and closing status of the solenoid valve and water pump, as well as the water pump speed, thereby adjusting the flushing water volume in a timely manner. It also monitors drill bit blockage in real time based on the received data and outputs the results to the display. The display is used to manually input relevant settings data for drilling and flushing, and to output drill bit blockage prompts; The solenoid valve is installed on the flushing water circuit of the flushing equipment to control the flow of flushing water. The flushing water pump is installed at the inlet of the solenoid valve to control the flushing water pressure and volume; Based on the drilling displacement value, the real-time drilling speed of the rock drill is obtained; after the control solenoid valve is opened, the required flushing water volume of the flushing equipment is calculated based on the display settings, the angle between the borehole and the horizontal plane, and the real-time drilling speed, and a control command to adjust the speed of the flushing water pump is generated based on the required flushing water volume.

2. The flush water volume control system for a drill jumbo according to claim 1, characterized in that, The proximity switch is installed on the push beam of the drilling arm mechanism of the rock drilling rig and faces the tail of the rock drill, and is used to collect the distance data of the rock drill relative to the proximity switch. The displacement sensor is installed at the rock drill support of the rock drilling rig's drill arm mechanism to collect displacement data of the rock drill relative to the rock drill support and determine the drilling displacement value. The tilt sensor is installed at the bottom of the propulsion beam of the drilling rig arm mechanism to collect the angle between the propulsion beam and the horizontal plane, and obtain the angle value between the borehole and the horizontal plane.

3. A method of controlling the amount of flushing water applied to a drill jumbo, characterized by The flushing water control system for rock drilling rigs according to claim 1 includes: The drilling status, drilling displacement value, the angle between the borehole and the horizontal plane, flushing water volume data, flushing water pressure data, and display settings data are acquired in real time. Based on the drilling status, determine whether the solenoid valve and flushing water pump are open or closed; based on the drilling displacement value, obtain the real-time drilling speed of the rock drill; and based on the flushing water volume data and flushing water pressure data, determine whether the drill bit is blocked. After the control solenoid valve is opened, the required flushing water volume for the flushing equipment is calculated based on the display settings, the angle between the borehole and the horizontal plane, and the real-time drilling speed. Then, a control command to adjust the speed of the flushing water pump is generated based on the required flushing water volume. When a blockage is detected in the drill bit, a control command is generated to adjust the speed or shut down the flushing water pump based on the flushing water volume and flushing water pressure data.

4. The flush water volume control method for a drill jumbo according to claim 3, characterized in that, Methods for acquiring drilling status, drilling displacement value, borehole angle with the horizontal plane, flushing water volume data, flushing water pressure data, and display settings data in real time include: The drilling status of the rock drill is obtained by collecting data on the distance between the rock drill and the proximity switch. The drilling status includes the start of drilling and the end of drilling. When the rock drill moves away from the proximity switch, it is determined to be the start of drilling. When the rock drill moves back to the sensing position of the proximity switch, it is determined to be the end of drilling. The drilling displacement value is obtained by collecting displacement data of the rock drill relative to the rock drill support. By collecting the angle between the propulsion beam and the horizontal plane, it is determined whether the borehole is at an angle of elevation or depression relative to the horizontal plane, and the angle value between the borehole and the horizontal plane is determined. The angle value of the elevation angle is displayed as positive, and the angle value of the depression angle is displayed as negative. The flushing water volume and flushing water pressure data are determined by collecting real-time data on the water volume and water pressure of the flushing equipment's flushing water path. The display settings include borehole diameter, flushing water loss coefficient, and basic flushing flow rate during horizontal drilling, and can be set and saved via the display input keys.

5. The flush water volume control method for a drill jumbo according to claim 3, characterized in that, The method for determining whether to open or close the solenoid valve and flushing water pump based on the drilling status is as follows: When the drilling state is in the start drilling state, both the control solenoid valve and the flushing water pump are turned on; When the drilling state is the drilling end state, both the control solenoid valve and the flushing water pump are turned off.

6. The flush water volume control method for a drill jumbo according to claim 3, characterized in that, The method for obtaining the real-time drilling speed of the rock drill based on the drilling displacement value is as follows: The real-time drilling speed is calculated based on the drilling displacement value and the time of displacement.

7. The flush water volume control method for a drill jumbo according to claim 3, characterized in that, The method for determining whether the drill bit is blocked based on flushing water volume and flushing water pressure data is as follows: When the flushing water volume decreases and the flushing water pressure increases, it is determined that the drill bit is blocked. When the flushing water pressure rises to a critical value, it is confirmed that the drill bit is blocked. If both the flushing water volume and flushing water pressure data are within the normal range, it can be determined that the drill bit is not blocked.

8. The flush water volume control method for a drill jumbo according to claim 3, characterized in that, After the solenoid valve is opened, the method for calculating the required flushing water volume for the flushing equipment based on the display settings, the angle between the borehole and the horizontal plane, and the real-time drilling speed is as follows: The required flushing water volume for the flushing equipment is calculated based on the borehole diameter, flushing water loss coefficient, foundation flushing flow rate during horizontal drilling, the angle between the borehole and the horizontal plane, and the real-time drilling speed. The formula for calculating the required flushing water volume for the flushing equipment is as follows: （1） In the formula, Q is the required flushing water volume for the flushing equipment, D is the borehole diameter, and K is the flushing water loss coefficient. This is the basic flushing flow rate during horizontal drilling, determined based on the size of the drilled rock cuttings, and calibrated in the early stages of formal drilling. For real-time drilling speed, This is the angle between the borehole and the horizontal plane, with the elevation angle being positive and the depression angle being negative.

9. The flush water volume control method for a drill jumbo according to claim 3, characterized in that, The method for generating control commands to adjust the speed of the flushing water pump based on the required flushing water volume is as follows: Compare the obtained flushing water volume data with the required flushing water volume to determine whether the flushing water volume has increased; When it is determined that the flushing water volume needs to be increased, a control command to speed up the flushing water pump is generated to increase the speed of the flushing water pump. When it is determined that the flushing water volume should be reduced, a control command to reduce the speed of the flushing water pump is generated to reduce the speed of the flushing water pump in real time.

10. The flush water volume control method for a drill jumbo according to claim 3, characterized in that, When a blockage is detected in the drill bit, the method for generating control commands to adjust the speed or shut down the flushing water pump based on flushing water volume and pressure data is as follows: When a blockage is detected in the drill bit, the speed of the flushing water pump is automatically increased to attempt to flush out the blockage. If the flushing water pressure continues to increase and reaches the critical value set by the controller, it is determined that the drill bit is severely blocked. The water pump is then turned off, and a blockage warning is displayed on the screen to inform the user to arrange for manual handling in a timely manner. If the flushing water pressure decreases to within the normal threshold, it indicates that the drill bit is not blocked. Adjust the flushing water pump speed according to the required flushing water volume.

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