Rock drilling device of drilling machine and control system and method of rock drilling device

Abstract

The invention discloses a rock drilling device of a drilling machine and a control system and method thereof, and belongs to the technical field of engineering machinery. Comprising a pressure acquisition device; a pressure applying device; the control device is used for receiving the pressure signal acquired by the pressure acquisition device and then sending a control signal to the pressure applying device so as to apply drilling pressure to a drill bit of the rock drill; the pressure acquisition device comprises a first pressure sensor used for receiving an electric signal and then acquiring a rotation pressure signal of the rock drill; the second pressure sensor is used for receiving the electric signal and then acquiring a propulsion pressure signal of the rock drill; the third pressure sensor is used for receiving the electric signal and then obtaining a buffer pressure signal of the rock drill. Compared with the prior art, the method has the beneficial effects that in the operation process of the drilling machine, the contact condition of the drill bit and the rock can be more accurately judged, the inaccuracy and delay of manual judgment are avoided, and the high efficiency, safety, effectiveness and economical efficiency of the drilling machine in the operation process are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and more specifically, to a rock drilling device of a drilling rig and a control system and method thereof. Background Art

[0002] When the drilling rig is in operation, its rock drill drives the drill bit into the rock through rotational force and thrust. When it is determined that the drill bit is in the rock, the vehicle will drill the rock with higher and different drilling pressures. The drilling rig needs to determine whether the drill bit is actually in contact with the rock before it can apply higher and different drilling pressures.

[0003] If the drill rig starts drilling without accurately judging whether the drill bit is actually in contact with the rock, the following problems may occur: (1) Ineffective operation and waste of time: If the drill bit has not yet contacted the rock or is only slightly in contact with the rock surface, and the drill rig has started drilling at a higher pressure, the operation is ineffective. The drill bit may just rotate in the air or only cause slight scratches on the rock surface without actually entering the rock to drill, resulting in a waste of time and energy; (2) Drill bit damage: In the absence of rock support, the drill bit may be subjected to uneven force or excessive impact force, resulting in damage or increased wear; and long periods of ineffective operation will shorten the service life of the drill bit, which increases the frequency and cost of replacing the drill bit; (3) Equipment failure: If the drill rig performs drilling operations without correctly judging the drill bit contact status, it may also cause failure of other equipment components. For example, the hydraulic system may be damaged due to excessive The load may be damaged, and the transmission parts may loosen or break due to abnormal vibration; (4) Safety risks: Inaccurate drilling operations may also bring safety risks. For example, if the drill bit suddenly contacts the rock and encounters huge resistance, it may cause the drilling rig to lose control or overturn. In addition, the unstable drilling process may also cause accidents such as rock collapse or collapse; (5) Impact on rock drilling effect: Drilling operations without accurate judgment of the drill bit contact status will not guarantee the rock drilling effect. The drill bit may not be able to drill the rock according to the predetermined trajectory and depth, resulting in the drilled holes not meeting the requirements or requiring additional repair work; (6) Increased costs: Due to ineffective operations, drill bit damage, equipment failure and safety risks, inaccurate drilling operations will significantly increase the total cost of rock drilling operations. These costs include the cost of replacing drill bits and equipment parts, the cost of repairing damaged equipment, the cost of handling safety accidents, and the additional costs caused by delays in construction. Therefore, the drilling rig needs to accurately judge whether the drill bit is actually in contact with the rock before operation to ensure the effectiveness, safety and economy of the rock drilling operation. The existing scheme usually adopts hydraulic direct control, which requires the operator to manually observe whether the rock is in contact. When it is determined that the rock is in contact, higher and different drilling pressures are manually applied to start drilling. Because the rock is relatively complex, manual judgment is often inaccurate or delayed.

[0004] In the related technology, for example, Chinese patent CN108643884B provides an anchor drilling rig propulsion and rotation system and its coordinated adaptive control method. In order to suppress the nonlinearity of the drilling rig system and enhance the robustness of the drilling process, the propulsion system and the single loop of the rotary system are self-disturbance control implemented. Secondly, a method for obtaining the rock hardness coefficient based on the drilling rig's drilling information is given. Finally, a composite control method is adopted to determine the optimal propulsion force and optimal rotation speed of the drilling rig at the time of drilling according to the estimated rock hardness coefficient, thereby realizing the coordinated action of the anchor rotation and propulsion system; when there is a difference between the estimated surrounding rock hardness coefficient and the actual value, the optimal propulsion force is adaptively adjusted according to the low-frequency filter value of the rotary pressure. This scheme aims to enhance the adaptive ability of the anchor drilling rig, but it does not solve the problem of determining whether the rock is in contact by combining different working pressures. Summary of the invention

[0005] 1. Technical problems to be solved

[0006] In response to the problem in the prior art of how to accurately judge whether the rock is in contact with the rock in combination with the working pressure before drilling operation, the present invention provides a rock drilling device of a drilling rig and its control system and method, which can identify whether the drill bit of the drilling rig has effectively contacted the rock in combination with different working pressures, thereby realizing coordinated operation with electric-controlled drilling rig products with rock drills.

[0007] 2. Technical solution

[0008] The purpose of the present invention is achieved through the following technical solutions.

[0009] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0010] Some embodiments of the present application propose a system and method for automatic configuration of a controller port and an anti-tampering device thereof to solve the technical problems mentioned in the above background technology section.

[0011] As a first aspect of the present application, some embodiments of the present application provide a rock drilling control system for a drilling rig, comprising: a pressure acquisition device, for acquiring a pressure signal of the rock drill after receiving an electrical signal; a pressure applying device, for applying drilling pressure to the drill bit of the rock drill according to the received electrical signal; a control device, for receiving the pressure signal acquired by the pressure acquisition device and then sending a control signal to the pressure applying device to apply drilling pressure to the drill bit of the rock drill; wherein the pressure acquisition device comprises: a first pressure sensor, for acquiring a rotation pressure signal of the rock drill after receiving an electrical signal; a second pressure sensor, for acquiring a thrust pressure signal of the rock drill after receiving an electrical signal; and a third pressure sensor, for acquiring a buffer pressure signal of the rock drill after receiving an electrical signal.

[0012] Furthermore, the rock drilling control system also includes an input device for user operation to realize the rotation of the rock drilling machine drill bit; wherein the control device realizes the control of the rock drilling machine drill bit after obtaining the electrical signal sent by the input device.

[0013] Furthermore, the rock drilling control system also includes a rock drill rotary solenoid valve, which realizes the rotation of the rock drill bit according to the received electrical signal; wherein, after the control device obtains the electrical signal sent by the input device, it sends an electrical signal to the rock drill rotary solenoid valve to realize the control of the rock drill bit.

[0014] Furthermore, the rock drilling control system further comprises a display for a user to operate to set or display data; wherein the display and the control device constitute data interaction.

[0015] Furthermore, the control device includes a main controller, which is electrically connected to the first pressure sensor, the second pressure sensor, the third pressure sensor and the pressure applying device to receive and / or send electrical signals.

[0016] As a second aspect of the present application, some embodiments of the present application provide a rock drilling control method for a drilling rig implemented according to the rock drilling control system of the above-mentioned drilling rig, comprising the following steps: establishing basic values; obtaining real-time rotational pressure, real-time thrust pressure and real-time buffer pressure of the rock drill during the rock drilling operation; and judging whether the drill bit of the rock drill is in contact with the rock by comparing the real-time rotational pressure, real-time thrust pressure and real-time buffer pressure with the basic values.

[0017] Furthermore, the step of establishing basic values ​​is specifically to rotate the rock drill to the left and maintain it for t time to establish the rotation pressure RP when the rock drill is not drilling, and at the same time obtain the current buffer pressure DP and thrust pressure FP; the rotation pressure RP, thrust pressure FP and buffer pressure DP of the rock drill before the rock drilling operation are used as basic values.

[0018] Furthermore, the step of establishing the basic value includes: starting the left-handed rock drill: making the drill bit of the rock drill rotate at a low speed and maintaining it for t time to establish a rotational pressure RP; while maintaining the rotational pressure, obtaining the current buffer pressure value DP through the third pressure sensor; while maintaining the rotational pressure and obtaining the buffer pressure, obtaining the current propulsion pressure value FP through the second pressure sensor; and using the obtained rotational pressure RP, buffer pressure DP and propulsion pressure FP as basic values.

[0019] Furthermore, it is determined whether the real-time rotation pressure of the rock drill is greater than RP, the real-time thrust pressure is greater than FP, and the real-time buffer pressure is greater than DP; if the rotation pressure signal is greater than RP, the thrust pressure signal is greater than FP, and the buffer pressure signal is greater than DP, the rock drill bit has contacted the rock; if the rotation pressure signal is less than or equal to RP or the thrust pressure signal is less than or equal to FP or the buffer pressure signal is less than or equal to DP, the rock drill bit is not in contact with the rock.

[0020] As a third aspect of the present application, some embodiments of the present application provide a rock drilling device of a drilling rig, including the rock drilling control system of the above-mentioned drilling rig; and also including: a rock drill, a vehicle body, a cab and wheels, the rock drill is used to drill holes in rocks, the rock drill is arranged on the vehicle body, the cab is arranged on one side of the vehicle body, the cab is provided with space for accommodating users, as well as an operating device and a display screen, and a pressure acquisition device is arranged on the rock drill.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] (1) During the drilling operation, the contact between the drill bit and the rock can be judged more accurately, avoiding the inaccuracy and delay of human judgment. This intelligent judgment can ensure the efficiency, safety, effectiveness and economy of the drilling operation;

[0024] (2) Reduce operator intervention and observation work, reduce labor intensity and improve operation safety;

[0025] (3) Through the feedback and adjustment mechanism, the system can continuously learn and optimize the drilling strategy to adapt to more complex rock environments and operational requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a rock drilling control system of a drilling rig in one embodiment of the present invention;

[0027] Figure 2 The figure is a flow chart of a rock drilling control method of a drilling rig in one embodiment of the present invention.

[0028] Explanation of the reference numerals in the figure: 100, pressure acquisition device; 110, first pressure sensor; 120, second pressure sensor; 130, third pressure sensor; 200, input device; 300, control device; 310, main controller; 400, pressure applying device; 500, rock drill rotary solenoid valve; 600, display. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Combination Figure 1 to Figure 2 The present invention discloses a rock drilling control system for a drilling rig, comprising a pressure acquisition device 100, a pressure applying device 400, a control device 300, an input device 200, a rock drilling machine rotary solenoid valve 500 and a display 600. The pressure acquisition device 100 is used to acquire the pressure signal of the rock drilling machine after receiving an electrical signal; the pressure applying device 400 applies drilling pressure to the drill bit of the rock drilling machine according to the received electrical signal; the control device 300 is used to receive the pressure signal acquired by the pressure acquisition device 100 and then send a control signal to the pressure applying device 400 to apply drilling pressure to the drill bit of the rock drilling machine; the input device 200 is used for users to operate to realize the rotation of the rock drilling machine drill bit; the rock drilling machine rotary solenoid valve 500 realizes the rotation of the rock drilling machine drill bit according to the received electrical signal; and the display 600 is used for users to operate to set or display data.

[0031] In a specific embodiment, the pressure acquisition device 100 is installed on the shock absorber of the rock drill, and is used to obtain the pressure signal of the rock drill after receiving the electrical signal. Specifically, it is used to detect and convert the working air pressure or oil pressure signal into a processable electrical signal, and then monitor and adjust it through the display 600 or the control device 300.

[0032] The pressure acquisition device 100 includes a pressure sensor, a signal conversion circuit, a data acquisition and processing system, and a display and communication module. The sensor is used to sense the air pressure or oil pressure inside the rock drill, and usually uses high-precision and high-stability components, such as bridge-type silicon piezoresistive devices, to ensure the accuracy of the measurement results. When the rock drill is working, the air pressure or oil pressure inside it will change with the change of the working state. The pressure acquisition device 100 monitors these changes in real time through the pressure sensor and converts the detected pressure signal into an electrical signal. Subsequently, the signal conversion circuit amplifies and filters the electrical signal to improve the stability and reliability of the signal. The data acquisition and processing system performs operations such as sampling, quantization, and encoding on the processed electrical signal to finally obtain pressure data in digital form.

[0033] In addition, the signal conversion circuit converts the pressure signal detected by the sensor into an electrical signal, and performs necessary amplification, filtering and other processing to eliminate interference signals and improve the signal-to-noise ratio of the signal; the data acquisition and processing system includes an A / D converter and a programmable controller, etc., which are used to convert analog electrical signals into digital signals and perform further data processing and analysis; the display and communication module is used to display the processed data in real time through the display screen, and also supports the transmission of data to the control device 300 through a serial port or other communication methods.

[0034] Specifically, the pressure acquisition device 100 includes a first pressure sensor 110, a second pressure sensor 120, and a third pressure sensor 130. The first pressure sensor 110 is used to obtain the rotation pressure signal of the rock drill after receiving the electrical signal. The first pressure sensor 110 monitors the pressure generated by the rock drill bit during rotation, and converts the monitored pressure value into an electrical signal and sends it to the control device 300. The control device 300 can determine the rotation state of the drill bit based on these signals, such as whether it is overloaded, whether the rotation speed needs to be adjusted, etc.

[0035] The second pressure sensor 120 is used to obtain the propulsion pressure signal of the rock drill after receiving the electrical signal. The second pressure sensor 120 monitors the pressure generated by the rock drill during the propulsion process, converts the monitored pressure value into an electrical signal, and sends it to the control device 300. The control device 300 can adjust the feed speed of the rock drill according to these signals to ensure that the drill bit can stably drill into the rock.

[0036] The third pressure sensor 130 is used to obtain the buffer pressure signal of the rock drill after receiving the electrical signal, monitor the buffer pressure generated by the rock drill during impact or vibration, so as to protect the mechanical structure and extend the service life. It converts the monitored pressure value into an electrical signal and sends it to the control device 300 for processing.

[0037] The first pressure sensor 110, the second pressure sensor 120 and the third pressure sensor 130 enable the working state of the rock drill to be monitored and adjusted in real time, thereby improving the working efficiency and safety of the rock drill.

[0038] In a specific embodiment, the pressure applying device 400 is a key actuator for controlling the drilling action of the rock drill. The pressure applying device 400 may be a rock drill drilling solenoid valve, which adjusts the fluid flow direction and flow rate in the hydraulic or pneumatic system according to the received control signal, thereby controlling the drilling pressure of the drill bit and driving the drill bit of the rock drill to perform the drilling action. By adjusting the opening degree and opening time of the rock drill drilling solenoid valve, the amount of fluid entering the pressure chamber can be controlled, thereby achieving the adjustment of the drilling pressure.

[0039] The control device 300 is used to receive the pressure signal obtained by the pressure acquisition device 100 and then send a control signal to the pressure applying device 400 to apply drilling pressure to the drill bit of the rock drill. The control device 300 receives the pressure signal from the pressure acquisition device 100, and sends a control signal to the pressure applying device 400 according to these signals to achieve accurate control of the drilling pressure of the drill bit of the rock drill. The control device 300 converts the control decision into a control signal and sends it to the pressure applying device 400 through an electrical connection. These control signals control the opening and closing degree of the solenoid valve, thereby adjusting the fluid pressure in the hydraulic or pneumatic system, and then applying the required drilling pressure to the drill bit of the rock drill.

[0040] Specifically, the control device 300 includes a main controller 310, which is electrically connected to the first pressure sensor 110, the second pressure sensor 120, the third pressure sensor 130 and the pressure applying device 400 to receive and / or send electrical signals. The main controller 310 is responsible for processing data from the sensors and making control decisions according to a preset program or algorithm. It has powerful data processing and real-time control capabilities, which can ensure that the rock drill can work stably and efficiently under various working conditions.

[0041] The main controller 310 receives electrical signals from the first pressure sensor 110, the second pressure sensor 120 and the third pressure sensor 130 through electrical connection, thereby realizing real-time monitoring and precise control of the working state of the rock drill. This control method improves the automation level and operating efficiency of the rock drill and reduces the labor intensity and safety risks of the operators.

[0042] In a specific embodiment, the input device 200 is electrically connected to the rock drill rotary solenoid valve 500 and the control device 300. The input device 200 is used for the user to operate to realize the rotation of the rock drill drill bit. The control device 300 controls the rock drill drill bit after acquiring the electrical signal sent by the input device 200. The rock drill rotary solenoid valve 500 realizes the rotation of the rock drill drill bit according to the received electrical signal; wherein, the control device 300 acquires the electrical signal sent by the input device 200 and sends the electrical signal to the rock drill rotary solenoid valve 500 to realize the control of the rock drill drill bit.

[0043] The input device 200 is the main tool for the user to interact with the rock drilling control system, and usually includes multiple control levers or buttons, allowing the user to adjust the rotation speed, feed speed, direction of the drill bit and possible other functions (such as turning on / off the coolant, etc.).

[0044] The electrical signal sent by the input device 200 is transmitted to the control device 300 of the rock drill. During this process, the signal may be transmitted through cables, wireless communication or other means to ensure the accuracy and timeliness of the signal. After receiving the electrical signals from the input device 200, the control device 300 processes and analyzes these signals, and determines the control instructions that need to be sent to the rock drill rotary solenoid valve 500 according to the preset program or algorithm. The control device 300 sends electrical signals to the rock drill rotary solenoid valve 500, and these signals control the opening and closing of the solenoid valve, thereby changing the flow direction and flow rate of the fluid in the hydraulic or pneumatic system.

[0045] The solenoid valve contains components such as an electromagnet and a valve body. When the electromagnet is energized, it generates magnetic force to attract the valve body to move, thereby changing the open and closed state of the valve. This change causes the fluid pressure in the hydraulic or pneumatic system to change, which in turn drives the drill bit of the rock drill to rotate. Under the control of the solenoid valve, the fluid in the hydraulic or pneumatic system is guided to the drive mechanism of the rock drill, and these fluids provide the energy and power required for the drill bit to rotate. The drill bit starts to rotate after receiving sufficient rotational torque, and adjusts the rotation speed and direction according to the control instructions.

[0046] In a specific embodiment, when the input device 200 is moved to the left, the rock drill rotary solenoid valve 500 receives the electrical signal sent from the control device 300 to the input device 200 and realizes the left rotation of the rock drill bit; when the input device 200 is moved to the right, the rock drill rotary solenoid valve 500 receives the electrical signal sent from the control device 300 to the input device 200 and realizes the right rotation of the rock drill bit.

[0047] During this process, the solenoid valve will adjust the fluid flow direction in the hydraulic or pneumatic system according to the instructions of the control signal to drive the drill bit of the rock drill to rotate left.

[0048] In a specific embodiment, the display 600 is used for the user to operate to set or display data, and the display 600 and the control device 300 constitute data interaction. The display 600 can display various working states and parameters of the rock drill in real time, such as the rotation speed of the drill bit, feed pressure, working time, fault information, etc. The display 600 also has fault diagnosis and alarm functions. When the rock drill fails or has an abnormal situation, the display 600 will promptly display the corresponding fault code or alarm information to remind the operator to pay attention and take corresponding measures.

[0049] The display 600 and the control device 300 realize data exchange through a data line or wirelessly. The control device 300 sends various working states and parameter information of the rock drill to the display 600 for display, including the rotation speed of the drill bit, feed pressure, oil temperature and oil pressure. The data and status information on the display 600 will be updated in real time with the working state of the rock drill. This real-time nature ensures that the operator can grasp the latest situation of the rock drill at any time, so as to make timely and accurate judgments and decisions.

[0050] according to Figure 2 As shown, the rock drilling control method of the drilling rig includes the following steps:

[0051] S1. When the rock drill is not drilling, the rock drill is rotated counterclockwise and maintained for t time to establish a rotation pressure RP, and the current buffer pressure DP and propulsion pressure FP are obtained as basic values;

[0052] S2, obtaining the real-time rotation pressure, real-time propulsion pressure and real-time buffer pressure of the rock drill during the rock drilling operation;

[0053] S3, determining whether the real-time rotation pressure of the rock drill is greater than RP;

[0054] If yes, continue to execute S4;

[0055] If not, return to S2;

[0056] S4, determining whether the real-time thrust pressure of the rock drill is greater than FP;

[0057] If yes, continue to execute S5;

[0058] If not, return to S2;

[0059] S5, determining whether the real-time buffer pressure of the rock drill is greater than DP;

[0060] If so, it is determined that the rock drill bit has contacted the rock and the execution ends;

[0061] If not, return to S2.

[0062] In the working process of the rock drill, especially before starting rock drilling, it is very important to carry out preparation work, which can ensure that the rock drill enters the working state smoothly and efficiently. For the rock drill, performing specific operations to establish the rotation pressure (RP) and obtain basic values ​​(such as buffer pressure DP and propulsion pressure FP) when not drilling is a key step in this preparation process. In step S1, the rock drill can establish a stable rotation pressure when not drilling, and obtain accurate buffer pressure and propulsion pressure as basic values. This step can fully prepare for the subsequent rock drilling operation.

[0063] Specifically, the specific process of establishing the basic value in step S1 is as follows:

[0064] S101, start the left-hand rock drill:

[0065] First, start the left-hand rock drill, but do not perform rock drilling operations at this time.

[0066] S102, establish rotation pressure RP:

[0067] The drill bit of the rock drill is rotated at a low speed for a period of time (recorded as time t). During this period of time, the hydraulic system or pneumatic system of the rock drill gradually builds up a stable rotation pressure (RP).

[0068] S103, obtaining the buffer pressure DP:

[0069] While the rotation pressure is maintained, the current buffer pressure value (DP) is acquired through the third pressure sensor.

[0070] S104, obtaining the propulsion pressure FP:

[0071] While maintaining the rotation pressure and acquiring the buffer pressure, the current propulsion pressure value (FP) is acquired through the second pressure sensor.

[0072] S105. Record basic values:

[0073] The acquired rotation pressure RP, buffer pressure DP and thrust pressure FP are used as basic values.

[0074] Specifically, the established basic values ​​will be used as a reference in subsequent rock drilling operations to monitor the working status of the rock drill, adjust control parameters, and promptly detect and handle abnormal situations.

[0075] More specifically, the rotation pressure is the source of power required for the drill bit to rotate. The buffer pressure is a pressure set by the rock drill to protect the mechanical structure and extend the service life during impact or vibration. It reflects the internal pressure state of the rock drill when it is not drilling. The thrust pressure is the pressure required by the rock drill to push the drill bit into the rock. The thrust pressure can affect the feed speed and drilling depth of the drill bit.

[0076] In the existing drilling technology, the judgment method of whether the drill bit is in contact with the rock depends on manual experience, which mainly relies on the operator's experience, feeling and certain operational feedback of the drill, such as vibration, sound, current change, etc. of the drill. However, this method has some limitations, such as strong subjectivity, delayed response, insufficient accuracy, etc. Or some emerging drilling technologies use machine vision, sonar detection and other technologies to assist in judging the contact status between the drill bit and the rock, and the equipment cost, technology integration cost and maintenance equipment cost are relatively high. The rock drilling device of a drilling rig and its control system and method of the present invention can more accurately judge the contact status between the drill bit and the rock during the operation of the drilling rig, reduce the operator's manual intervention and observation work, reduce labor intensity and improve operation safety, and at the same time avoid the inaccuracy and delay of manual judgment, ensuring the efficiency, safety, effectiveness and economy of the drilling rig during the operation.

[0077] The above schematically describes the invention and its implementation methods, which is not restrictive. Without departing from the spirit or basic features of the invention, the invention can be implemented in other specific forms. What is shown in the accompanying drawings is only one of the implementation methods of the invention. The actual structure is not limited to this, and any figure mark in the claims should not limit the claims involved. Therefore, if a person of ordinary skill in the art is inspired by it, without departing from the purpose of the invention, a structural method and an embodiment similar to the technical solution are designed without creativity, which should all fall within the scope of protection of this patent. In addition, the word "including" does not exclude other elements or steps, and the word "one" before the element does not exclude the inclusion of "multiple" elements. The multiple elements stated in the product claim can also be implemented by one element through software or hardware. The words first, second, etc. are used to indicate names, and do not indicate any specific order.

Claims

1. A rock drilling control system for a drilling rig, comprising: A pressure acquisition device, used for acquiring a pressure signal of the rock drill after receiving an electrical signal; A pressure applying device, which applies drilling pressure to the drill bit of the rock drill according to the received electrical signal; Characterized in that the rock drilling control system further comprises: A control device, configured to receive a pressure signal acquired by the pressure acquisition device and then send a control signal to the pressure applying device to apply drilling pressure to the drill bit of the rock drill; Wherein, the pressure acquisition device comprises: A first pressure sensor, used for obtaining a rotation pressure signal of the rock drill after receiving an electrical signal; A second pressure sensor is used to obtain a propulsion pressure signal of the rock drill after receiving the electrical signal; The third pressure sensor is used to obtain a buffer pressure signal of the rock drill after receiving the electrical signal.

2. The rock drilling control system of the drilling rig according to claim 1, characterized in that: The rock drilling control system further comprises an input device for being operated by a user to realize the rotation of the rock drilling machine drill bit; The control device controls the drill bit of the rock drill after acquiring the electrical signal sent by the input device.

3. The rock drilling control system of the drilling rig according to claim 2, characterized in that: The rock drilling control system further comprises a rock drilling machine rotation solenoid valve, wherein the rock drilling machine rotation solenoid valve realizes the rotation of the rock drilling machine drill bit according to the received electrical signal; Wherein, after acquiring the electrical signal sent by the input device, the control device sends an electrical signal to the rotary solenoid valve of the rock drill to realize the control of the drill bit of the rock drill.

4. The rock drilling control system of the drilling rig according to claim 1, characterized in that: The rock drilling control system further comprises a display for a user to operate to set or display data; Wherein, the display and the control device constitute data interaction.

5. The rock drilling control system of the drilling rig according to claim 1, characterized in that: The control device includes a main controller, which is electrically connected to the first pressure sensor, the second pressure sensor, the third pressure sensor and the pressure applying device to receive and / or send electrical signals.

6. A rock drilling control method for a drilling rig implemented by the rock drilling control system of the drilling rig according to any one of claims 1 to 5, characterized in that: The following steps are involved: Establish basic values; Obtaining the real-time rotation pressure, real-time thrust pressure and real-time buffer pressure of the rock drill during the rock drilling operation; By comparing the real-time rotation pressure, real-time propulsion pressure and real-time buffer pressure with the basic values, it is determined whether the rock drill bit is in contact with the rock.

7. The rock drilling control method of a drilling rig according to claim 6, characterized in that: The specific steps of establishing basic values ​​are: when the rock drill is not drilling, rotate the rock drill to the left and maintain it for t time to establish the rotation pressure RP, and at the same time obtain the current buffer pressure DP and thrust pressure FP; the rotation pressure RP, thrust pressure FP and buffer pressure DP of the rock drill before the rock drilling operation are used as basic values.

8. The rock drilling control method of a drilling rig according to claim 7, characterized in that: The steps to establish base values ​​include: Start the left-hand rock drill: The drill bit of the rock drill is rotated at a low speed for a period of time t to establish a rotation pressure RP; While maintaining the rotation pressure, obtaining the current buffer pressure value DP through the third pressure sensor; While maintaining the rotation pressure and obtaining the buffer pressure, obtaining the current propulsion pressure value FP through the second pressure sensor; The acquired rotation pressure RP, buffer pressure DP and thrust pressure FP are used as basic values.

9. The rock drilling control method of a drilling rig according to claim 7, characterized in that: Determine whether the real-time rotation pressure of the rock drill is greater than RP, the real-time thrust pressure is greater than FP, and the real-time buffer pressure is greater than DP; If the rotation pressure signal is greater than RP and the thrust pressure signal is greater than FP and the buffer pressure signal is greater than DP, the rock drill bit is in contact with the rock; If the rotation pressure signal is less than or equal to RP or the thrust pressure signal is less than or equal to FP or the buffer pressure signal is less than or equal to DP, the rock drill bit is not in contact with the rock.

10. A rock drilling device for a drilling rig, characterized in that: A rock drilling control system for a drilling rig comprising any one of claims 1 to 5; The rock drilling device of the drilling rig also includes: a rock drill, a vehicle body, a cab and wheels. The rock drill is used to drill holes in rocks. The rock drill is arranged on the vehicle body, and the cab is arranged on one side of the vehicle body. The cab is provided with space for accommodating users, an operating device and a display screen. The pressure acquisition device is arranged on the rock drill.

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