Down-the-hole drilling rig

Abstract

This application discloses a down-the-hole drill rig, including: a control device for the down-the-hole drill rig's air compressor system and an air compressor system connected to the control device; the control device includes: a first solenoid valve installed on the down-the-hole drill rig and a controller; the input terminal of the controller is connected to the first solenoid valve, and the output terminal of the controller is connected to the air compressor system. Thus, the state of the solenoid valve of the down-the-hole drill rig can be linked with the air compressor system through the controller, enabling real-time, accurate, and reliable use of the down-the-hole drill rig.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology, and in particular to down-the-hole drilling rigs. Background Technology

[0002] Down-the-hole (DH) drills are highly efficient medium-to-deep hole drilling devices, primarily used for drilling large-diameter, deep holes in rock. These rigs typically include auxiliary equipment such as an air compressor system, which uses compressed air to drive the drill's impactor for drilling operations. During operation, the air compressor system usually consumes a relatively high amount of power. The power adjustment is typically controlled manually by the operator based on experience, or by simple program-triggered control. However, relying on manual operation or simple program triggering results in low real-time performance and accuracy, affecting the reliability of the DH drill. Therefore, how to use DH drills in a real-time, accurate, and reliable manner has become a pressing technical problem to be solved. Utility Model Content

[0003] The purpose of this application is to provide a down-the-hole drilling rig that can be used in real time, accurately and reliably.

[0004] To achieve the above objectives:

[0005] In a first aspect, embodiments of this application provide a down-the-hole drill rig, including: a down-the-hole drill rig air compressor system control device and an air compressor system connected to the control device; the control device includes: a first solenoid valve installed on the down-the-hole drill rig and a controller; the input terminal of the controller is connected to the first solenoid valve, and the output terminal of the controller is connected to the air compressor system.

[0006] In one embodiment, the air compressor system includes an engine and / or an air compressor.

[0007] In one embodiment, the down-the-hole drill further includes: a drilling operation motor and an impactor, wherein the drilling operation motor is connected to the impactor of the down-the-hole drill and is used to drive the impactor of the down-the-hole drill to rotate; the first solenoid valve includes: an operation solenoid valve connected to the drilling operation motor, wherein when the operation solenoid valve is energized, the drilling operation motor operates, and when the operation solenoid valve is de-energized, the drilling operation motor stops.

[0008] In one embodiment, the down-the-hole drill further includes: an air circuit system connected to an air compressor for supplying gas to the air compressor; the first solenoid valve further includes: a gas supply solenoid valve connected to the air circuit system, wherein when the gas supply solenoid valve is energized, the air circuit system opens to supply gas to the air compressor, and when the gas supply solenoid valve is de-energized, the air circuit system closes to stop supplying gas to the air compressor.

[0009] In one embodiment, the down-the-hole drill further includes a non-operation execution device, and the first solenoid valve further includes a non-operation solenoid valve connected to the non-operation execution device. When the non-operation solenoid valve is energized, the non-operation device operates, and when the non-operation solenoid valve is de-energized, the non-operation device stops operating.

[0010] In one embodiment, the air compressor is connected to the impactor of the down-the-hole drill, and the air compressor can provide downward air pressure to the impactor; the air compressor is also provided with a second solenoid valve, in which the air compressor is in a loaded state when the second solenoid valve is energized, and in which the air compressor is in an unloaded state when the second solenoid valve is de-energized.

[0011] In one embodiment, the non-operation execution device further includes at least one of the following:

[0012] The unloading rod actuating cylinder and the unloading rod device connected to the unloading rod actuating cylinder, wherein the unloading rod actuating cylinder is used to drive the unloading rod device to enable the down-the-hole drilling rig to perform unloading rod operations;

[0013] The travel motor and the travel device connected to the travel motor are used to drive the travel device so that the down-the-hole drill can perform travel operations.

[0014] Adjustment cylinder and attitude adjustment device connected to adjustment cylinder, the adjustment cylinder is used to drive attitude adjustment device so that down-the-hole drill rig can perform attitude adjustment operation;

[0015] Non-operating solenoid valves include at least one of the following:

[0016] The unloading rod solenoid valve is connected to the unloading rod actuation cylinder. When the unloading rod solenoid valve is energized, the unloading rod actuation cylinder moves; when the unloading rod solenoid valve is de-energized, the unloading rod actuation cylinder stops moving.

[0017] The solenoid valve connected to the travel motor operates when the solenoid valve is energized and stops when the solenoid valve is de-energized.

[0018] The attitude adjustment solenoid valve is connected to the adjustment cylinder. When the attitude adjustment solenoid valve is energized, the adjustment cylinder moves; when the attitude adjustment solenoid valve is de-energized, the adjustment cylinder stops moving.

[0019] The down-the-hole drill also includes: a main pump; one end of which is connected to the engine and the other end is connected to the drilling operation actuator motor; used to drive the drilling operation actuator motor to rotate under the drive of the engine, so that the impactor connected to the drilling operation actuator motor rotates to perform drilling operations;

[0020] The main pump is also connected to the walking device at the other end, and is used to drive the walking motor to rotate under the drive of the engine so that the walking device connected to the walking motor can work to perform walking operations.

[0021] In one embodiment, the down-the-hole drill further includes: a compression power mechanism; one end of the compression power mechanism is connected to an engine, and the other end is connected to an air compressor, for providing pressure to the air compressor under the drive of the engine to generate air pressure in the air compressor to drive an impactor connected to the air compressor to drill downwards; the impactor is connected to a drilling operation motor and the air compressor respectively, and is driven to rotate by the driving force provided by the drilling operation motor and driven to drill downwards by the air pressure provided by the air compressor.

[0022] In one embodiment, the air compressor is further provided with a lower limit pressure valve, which is used to provide a lower limit air pressure to the air compressor so that the air compressor can operate at least at the lower limit air pressure.

[0023] The down-the-hole drill rig provided in this application includes a down-the-hole drill air compressor system control device and an air compressor system connected to the control device. The control device includes a first solenoid valve and a controller. One end of the controller is connected to the first solenoid valve of the down-the-hole drill, and the other end is connected to the air compressor system of the down-the-hole drill, thereby enabling the first solenoid valve of the down-the-hole drill and the air compressor system to work together. This reduces the problems of high energy consumption and rapid wear caused by manually starting or maintaining the air compressor system when it is needed, or manually stopping or reducing the operation of the air compressor system when it is not needed. Therefore, the down-the-hole drill rig provided in this application can be used in real-time, accurately, and reliably. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of a down-the-hole drill provided for some embodiments of this application.

[0025] Figure 2 Another structural schematic diagram of a down-the-hole drill provided for some embodiments of this application.

[0026] Figure 3 This is yet another structural schematic diagram of a down-the-hole drill provided for some embodiments of this application.

[0027] Figure 4 This is another structural schematic diagram of a down-the-hole drill provided for some embodiments of this application.

[0028] Figure 5 This is another structural schematic diagram of a down-the-hole drill provided for some embodiments of this application.

[0029] Figure 6A schematic diagram of the specific structure of a down-the-hole drill provided for some embodiments of this application.

[0030] Figure 7 The diagram shows the structure of a down-the-hole drill rig provided for some specific embodiments of this application.

[0031] Figure 8 This is a schematic diagram of the controller control logic of a down-the-hole drill provided for some embodiments of this application. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] It should be noted that if the embodiments of this application involve directional indications (such as up, down, left, right, front, back, etc.), these directional indications are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures). If the specific posture changes, the directional indications will also change accordingly. Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0034] The solutions in this application are for down-the-hole (DH) drilling rigs, which are engineering machinery specifically designed for drilling medium-deep or deep holes in hard rock formations. They are commonly used in mining, water conservancy projects, building foundation construction, and geological exploration. It should be noted that the air compressor system of the DH drilling rig is its core power source, and its intelligent control is crucial for energy saving and reliability.

[0035] Based on this, please refer to the figure. Figure 1 This application provides structural schematic diagrams of down-the-hole drills for some embodiments, such as... Figure 1As shown, the down-the-hole drill rig 1 includes: a down-the-hole drill air compressor system control device 10 and an air compressor system 11 connected to the control device 10; the control device 10 includes: a first solenoid valve 101 installed on the down-the-hole drill rig 1 and a controller 102; the input end of the controller 102 is connected to the first solenoid valve 101, and the output end of the controller 102 is connected to the air compressor system 11.

[0036] It is understood that the controller 102 is capable of receiving the electrical signal status of the first solenoid valve 101; determining the current working mode of the down-the-hole drill 1 based on the electrical signal status of the first solenoid valve 101; and controlling the working state of the air compressor system 11 based on the current working mode of the down-the-hole drill 1, so that the air compressor system 11 works based on the working state.

[0037] It should be noted that the first solenoid valve 101 is installed on the down-the-hole drill 1 and is used to determine the current operating mode of the down-the-hole drill 1. In some embodiments, the first solenoid valve 101 can be a general solenoid valve, which can output different electrical signal states to the controller 102 according to the different operating modes of the current down-the-hole drill 1. Of course, in other embodiments, the first solenoid valve 101 can also be a combination of multiple solenoid valves, each of which corresponds to a certain operating mode, so that the controller 102 receives the electrical signal states corresponding to multiple solenoid valves to determine the current operating mode of the down-the-hole drill 1. For example, the first solenoid valve 101 includes multiple solenoid valves that can represent multiple operating modes. When the electrical signal state of the first solenoid valve indicates that it is energized, it indicates that the down-the-hole drill 1 is currently executing the first operating mode. When the electrical signal state of the second solenoid valve 1121 indicates that it is energized, it indicates that the down-the-hole drill 1 is currently executing the second operating mode, and so on. It is understood that different solenoid valves correspond to different operating modes, and the electrical signal state of the solenoid valve can be used to characterize whether the down-the-hole drill 1 is currently in the operating mode corresponding to the solenoid valve. The energized state of the corresponding solenoid valve characterizes the opening of the corresponding operating mode, or the de-energized state of the corresponding solenoid valve characterizes the closing of the corresponding operating mode.

[0038] It should be understood that the electrical signal state of the first solenoid valve 101 can reflect the current working mode of the down-the-hole drill 1, thereby controlling the working state of the air compressor system 11, so that the air compressor system 11 has different working states in different working modes.

[0039] Therefore, the down-the-hole drill provided in this application embodiment links the first solenoid valve that reflects the current working mode of the down-the-hole drill with the air compressor system of the down-the-hole drill through a controller. It can automatically determine the current working mode of the down-the-hole drill 1 and automatically adjust the working state of the air compressor system 11 based on the current working mode. This allows the air compressor system 11 of the down-the-hole drill 1 to work on demand, reducing unnecessary energy consumption of the air compressor system 11. Moreover, it does not require manual intervention, reducing problems such as wear and tear on manual buttons. Thus, the down-the-hole drill 1 can be used in real time, accurately and reliably while reducing energy consumption.

[0040] Please see Figure 2 , Figure 2 This is another structural schematic diagram of a down-the-hole drill rig provided in some embodiments of this application, such as... Figure 2 As shown, the air compressor system 11 includes: an engine 111 and / or an air compressor 112.

[0041] It should be understood that the controller 102 can be used to control the air pressure state of the air compressor 112 according to the current working mode of the down-the-hole drill 1, so that the air compressor 112 can work based on the air pressure state; the controller 102 can also be used to control the speed of the engine 111 according to the current working mode of the down-the-hole drill 1, so that the engine 111 can rotate based on that speed.

[0042] It is important to understand that the engine 111 in the air compressor system 11 of the down-the-hole drill rig 1 is the core component of the down-the-hole drill rig 1, driving not only the air compressor 112 but also the movement of the entire machine. The air compressor 112 in the air compressor system 11 of the down-the-hole drill rig 1 generates high-pressure gas to perform drilling and slag removal.

[0043] In this embodiment, the down-the-hole drill rig, through a controller, links the first solenoid valve that reacts to the operating mode to the air compressor, thereby enabling the down-the-hole drill rig to control the air pressure state of the air compressor 112 according to the current operating mode. This control of the air pressure of the air compressor 112 eliminates ineffective output. Furthermore, the down-the-hole drill rig, through a controller, connects the first solenoid valve that reacts to the operating mode to the engine, thereby enabling the down-the-hole drill rig to control the engine speed according to the current operating mode, thus reducing excessive engine input.

[0044] Furthermore, because the controller connects to both the engine and the air compressor, the dual-control linkage solves the energy consumption coupling dilemma of high pressure requiring high speed in traditional solutions. Therefore, the separate control of air pressure and rotation speed in the embodiment of this application can effectively save energy consumption of the down-the-hole drill rig 1.

[0045] Please see Figure 3 , Figure 3 Another structural schematic diagram of a down-the-hole drill rig provided for some embodiments of this application, such as... Figure 3 As shown, the down-the-hole drill rig 1 also includes: a drilling operation motor and an impactor 15. The drilling operation motor is connected to the impactor 15 of the down-the-hole drill rig 1 and is used to drive the impactor 15 of the down-the-hole drill rig 1 to rotate. The first solenoid valve 101 includes: an operation solenoid valve 1012 connected to the drilling operation motor 13. When the operation solenoid valve 1012 is energized, the drilling operation motor 13 operates. When the operation solenoid valve 1012 is de-energized, the drilling operation motor 13 stops.

[0046] Please refer to the following: Figure 3 ,like Figure 3 As shown, the down-the-hole drill rig 1 also includes: an air circuit system 12, which is connected to an air compressor 112 and is used to supply gas to the air compressor 112; the first solenoid valve 101 also includes: an air supply solenoid valve 1011 connected to the air circuit system 12. When the air supply solenoid valve 1011 is energized, the air circuit system 12 is open, and when the air supply solenoid valve 1011 is de-energized, the air circuit system 12 is closed.

[0047] Please refer to the following: Figure 3 ,like Figure 3 As shown, the down-the-hole drill rig 1 also includes a non-operating device 14, and the first solenoid valve 101 further includes a non-operating solenoid valve 1013 connected to the non-operating device 14. When the non-operating solenoid valve 1013 is energized, the non-operating device 14 operates, and when the non-operating solenoid valve 1013 is de-energized, the non-operating device 14 stops operating.

[0048] It should be noted that the controller 102 is also used to receive the first electrical signal state of the working solenoid valve 1012, the second electrical signal state of the air supply solenoid valve 1011, and the third electrical signal state of the non-working solenoid valve 1013; and to determine the current working mode of the down-the-hole drill rig 1 based on the first electrical signal state of the working solenoid valve 1012, the second electrical signal state of the air supply solenoid valve 1011, and the third electrical signal state of the non-working solenoid valve 1013. Here, the first, second, and third electrical signal states all include: energized state and / or de-energized state.

[0049] It should be noted that the electrical signal status usually refers to the open or closed state of the solenoid valve, or in other words, the energized or de-energized state. For example, the electrical signal status corresponding to the open state of the solenoid valve is usually the energized state, while the electrical signal status corresponding to the closed state of the solenoid valve is usually the de-energized state.

[0050] Here, one end of the drilling rig's operating motor 13 is connected to the operating solenoid valve 1012 in the first solenoid valve 101, and the other end of the drilling rig's operating motor 13 is connected to the impactor 15, which is used to provide feedback to the controller 102 from the first solenoid valve 101 when the drilling rig's operating motor is running. Exemplarily, the drilling rig's operating motor 13 is connected to the spindle of the impactor 15, driving the impactor 15 to rotate and advance. Exemplarily, the down-the-hole drill rig 1 also includes a working device connected between the drilling rig's operating motor 13 and the impactor 15. The drilling rig's operating motor 13 drives the working device, thereby causing the impactor 15 to rotate and advance simultaneously. The impactor 15 is the core component of the down-the-hole drill rig 1, capable of converting the high-pressure gas provided by the air compressor 112 into high-frequency piston impact to perform drilling operations. The air circuit system 12 has its input end connected to the air compressor 112, and its output is divided into two paths: one for driving the impactor 15, and the other for bottom hole slag removal. The air supply solenoid valve 1011 is installed at the input end of the air circuit system 12. When the air supply solenoid valve 1011 is open, that is, when the air supply solenoid valve 1011 is energized, it supplies gas to the air compressor 112. When the air supply solenoid valve 1011 is closed, that is, when the air supply solenoid valve 1011 is de-energized, it stops supplying gas to the air compressor 112, thereby reducing the gas content in the air compressor 112 and thus reducing the air pressure in the air compressor 112.

[0051] For example, the air circuit system 12 includes a main air circuit and a control air circuit. An air filter and an intake valve are installed on the main air circuit. The main air circuit enters the air compressor 112 through the air filter and intake valve. The air compressor 112 compresses the air to form a high-temperature and high-pressure oil-gas mixture. This oil-gas mixture is then separated by an oil separator. A portion of the oil-free high-pressure gas is supplied to the air supply end as the main air circuit to provide a power source for the impactor 15. The other portion is used as the control air circuit to control the opening and closing of the intake valve through a filter. Here, the air supply solenoid valve 1011 can be installed on the main air circuit to instruct the intake valve to open when the air supply solenoid valve 1011 is energized, allowing air to enter the air compressor 112. When the air supply solenoid valve 1011 is de-energized, it instructs the intake valve to close, stopping air from entering the air compressor 112.

[0052] In this embodiment, the solenoid valve includes at least three types of solenoid valves, all of which are connected to the controller. By combining the states of the three solenoid valves, different working modes can be accurately identified, thereby reducing mode misjudgment caused by identifying only one type of solenoid valve and improving the accuracy of automatic identification of the current working mode of the down-the-hole drill 1.

[0053] It should be added that the controller 102 is also used to determine the current working mode of the down-the-hole drill rig 1 as the drilling operation mode based on the energized state of the working solenoid valve 1012, the energized state of the air supply solenoid valve 1011, and the de-energized state of the non-working solenoid valve 1013; or, it is used to determine the current working mode of the down-the-hole drill rig 1 as the non-drilling operation mode based on the de-energized state of the working solenoid valve 1012, the de-energized state of the air supply solenoid valve 1011, and the energized state of the non-working solenoid valve 1013.

[0054] Thus, the current working mode of the down-the-hole drill is considered to be the drilling operation mode only when it is determined that both the working solenoid valve 1012 and the air supply solenoid valve 1011 are energized and the non-working solenoid valve 1013 is de-energized. At the same time, the current working mode of the down-the-hole drill is considered to be the non-working mode only when it is determined that both the working solenoid valve 1012 and the air supply solenoid valve 1011 are de-energized and the non-working solenoid valve 1013 is energized. This can reduce problems such as incomplete drilling or excessive energy consumption caused by misjudgment leading to incorrect control of the engine or air compressor 112.

[0055] It should be noted that the controller 102 can also be used to: control the speed of the engine 111 to a first speed according to the current working mode of the down-the-hole drill 1 being the drilling operation mode, so that the engine 111 rotates based on the first speed; or, the controller 102 can also be used to: control the speed of the engine 111 to a second speed according to the current working mode of the down-the-hole drill 1 being the non-drilling operation mode, so that the engine 111 rotates based on the second speed, where the first speed is greater than the second speed.

[0056] It should be noted that the engine 111 is typically connected to the drilling rig's operating motor 14 via the main pump 16. The faster the engine 111 rotates, the faster the drilling rig's operating motor 14 rotates. Since the drilling rig's operating motor 14 is also connected to the impactor 15, it also drives the impactor 15 to rotate faster. Conversely, the slower the engine 111 rotates, the slower the drilling rig's operating motor 14 rotates. Therefore, when the down-the-hole drill is currently operating in non-drilling mode, the engine does not need to run at high speed. Thus, by controlling the engine speed to reduce excess energy consumption from engine operation, this unnecessary energy consumption can be minimized.

[0057] Thus, when the down-the-hole drill rig 1 is in non-working mode, the engine speed is reduced, thereby reducing energy consumption in non-working mode.

[0058] In some implementations, please refer to Figure 4 , Figure 4 Another structural schematic diagram of the down-the-hole drill rig provided in some embodiments of this application, such as... Figure 4As shown, the air compressor 112 is connected to the impactor 15 of the down-the-hole drill 1. The air compressor 112 can provide downward air pressure to the impactor 15. The air compressor 112 is also equipped with a second solenoid valve 1121. When the second solenoid valve 1121 is energized, the air pressure state of the air compressor 112 is in the loading state. When the second solenoid valve 1121 is de-energized, the air pressure state of the air compressor 112 is in the unloading and loading state.

[0059] It should be added that the controller 102 is used to: control the second solenoid valve 1121 to open when the current working mode of the down-the-hole drill 1 is the drilling operation mode, so that the second solenoid valve 1121 enters the energized state and the air pressure state in the air compressor 112 is the loaded state, so as to provide a downward air pressure thrust to the impactor 15 of the down-the-hole drill 1 connected to the air compressor 112; or, the controller 102 is used to: control the second solenoid valve 1121 to close when the current working mode of the down-the-hole drill 1 is the non-drilling operation mode, so that the second solenoid valve 1121 enters the de-energized state and the air pressure state of the air compressor 112 is the unloaded state.

[0060] The second solenoid valve 1121 here can be an loading / unloading solenoid valve installed in the air compressor 112. When the loading / unloading solenoid valve is open, that is, when the loading / unloading solenoid valve is energized, it pressurizes the air compressor 112 to put the air compressor 112 into a pneumatic loading state. When the loading / unloading solenoid valve is closed, that is, when the loading / unloading solenoid valve is de-energized, it stops pressurizing the air compressor 112 to put the air compressor 112 into an unloading state, thereby reducing the internal pressure of the air compressor 112 and saving energy consumption of the air compressor 112.

[0061] Thus, in this embodiment, by installing a second solenoid valve on the air compressor and connecting it to the controller, the first solenoid valve connected to the other end of the controller, which represents the working mode of the down-the-hole drill, can be linked with the second solenoid valve that controls the loading and unloading state of the air compressor. When the down-the-hole drill is in a non-working mode, the air pressure of the air compressor is in an unloading state, thereby reducing the pressure inside the air compressor and further reducing the energy consumption of the whole machine, thereby further achieving energy saving and efficiency improvement.

[0062] In some embodiments, the non-operating device 14 further includes at least one of the following:

[0063] The unloading rod actuating cylinder and the unloading rod device connected to the unloading rod actuating cylinder are used to drive the unloading rod device so that the down-the-hole drill 1 can perform the unloading rod device operation.

[0064] The travel motor and the travel device connected to the travel motor are used to drive the travel device so that the down-the-hole drill 1 can perform travel operations.

[0065] Adjustment cylinder and attitude adjustment device connected to adjustment cylinder, the adjustment cylinder is used to drive attitude adjustment device so that down-the-hole drill rig can perform attitude adjustment operation;

[0066] Non-operating solenoid valves include at least one of the following:

[0067] The unloading rod solenoid valve is connected to the unloading rod actuation cylinder. When the unloading rod solenoid valve is energized, the unloading rod actuation cylinder moves; when the unloading rod solenoid valve is de-energized, the unloading rod actuation cylinder stops moving.

[0068] The solenoid valve connected to the walking motor operates when the solenoid valve is energized and stops when the solenoid valve is de-energized.

[0069] The attitude adjustment solenoid valve is connected to the adjustment cylinder. When the attitude adjustment solenoid valve is energized, the adjustment cylinder moves; when the attitude adjustment solenoid valve is de-energized, the adjustment cylinder stops working.

[0070] It should be added that the non-operation mode may include at least one of the following: rod unloading mode, walking mode, and attitude adjustment mode; the controller is also used to determine the current working mode of the down-the-hole drill as rod unloading mode based on the de-energized state of the air supply solenoid valve 1011, the energized state of the rod unloading solenoid valve, and the de-energized state of the operating solenoid valve, walking solenoid valve, and attitude adjustment solenoid valve; or, to determine the current working mode of the down-the-hole drill as walking mode based on the de-energized state of the air supply solenoid valve, the energized state of the walking solenoid valve, and the de-energized state of the operating solenoid valve, rod unloading solenoid valve, and attitude adjustment solenoid valve; or, to determine the current working mode of the down-the-hole drill as attitude adjustment mode based on the de-energized state of the air supply solenoid valve, the energized state of the attitude adjustment solenoid valve, and the de-energized state of the operating solenoid valve, rod unloading solenoid valve, and walking solenoid valve.

[0071] It should be noted that the devices that perform various auxiliary functions on a down-the-hole (DH) drilling rig when not in drilling operation include the drill rod connection / unloading device, which is a mechanical device on the DH rig specifically designed for automatically connecting and unloading drill rods. Its main function is to address the issue that when drilling with a DH rig, the hole depth often exceeds the length of a single drill rod, requiring multiple drill rods to be connected end-to-end to reach the desired depth. After drilling is completed or when drill rods need to be replaced, the drill rods must be unloaded one by one, which is time-consuming and dangerous if done manually. This connection / unloading device typically includes a robotic arm driven by a hydraulic cylinder. This robotic arm can grasp the drill rod and precisely move it in front of the drilling rig spindle to connect it to the drill rod on the spindle or inside the hole to perform a connection / unloading operation. For example, this connection method can be a threaded connection; alternatively, the robotic arm can unscrew the connected drill rod from the spindle and store it for unloading.

[0072] The traveling mechanism refers to the chassis structure that supports the overall weight of the down-the-hole drill rig and enables it to move around the work site. Its function is to allow the down-the-hole drill rig to move between drilling positions or adjust the drilling points on the same working surface, facilitating the equipment's entry and exit from the work area. This traveling mechanism is typically driven by a traveling motor, which can be a hydraulic motor. The traveling mechanism can include, but is not limited to, tracked traveling mechanisms and wheeled traveling mechanisms.

[0073] An attitude adjustment device is a mechanism used to adjust and stabilize the attitude of the down-the-hole drill rig relative to the ground, such as its angle and level. Its function is to ensure that the drill rod of the down-the-hole drill rig is kept as vertical as possible during down-the-hole drilling operations. The working ground is often uneven. The attitude adjustment device can ensure that the down-the-hole drill rig remains stable during drilling, even on sloping ground, and prevent it from shaking or tipping over.

[0074] In this embodiment, each non-operating device is independently equipped with a solenoid valve. By controlling the energization and de-energization of each independent solenoid valve, the current working mode of the down-the-hole drill can be accurately determined, reducing misjudgments of the current working mode of the down-the-hole drill. This reduces the possibility of misoperation of the engine or air compressor caused by misjudgments and improves the reliability of the down-the-hole drill control.

[0075] In some implementations, please refer to Figure 5 , Figure 5 Another structural schematic diagram of the down-the-hole drill provided in some embodiments of this application is shown below. Figure 5 As shown, the down-the-hole drill rig 1 also includes: a main pump 16; one end of the main pump 16 is connected to the engine 111, and the other end is connected to the drill rig operation execution motor 14. The main pump 16 is used to drive the drill rig operation execution motor 14 to rotate under the drive of the engine 111, so that the impactor 15 connected to the drill rig operation execution motor 14 rotates to perform drilling operations.

[0076] The other end of the main pump 16 is also connected to the traveling device. The main pump 16 is also used to drive the traveling motor to rotate under the drive of the engine 111 so that the traveling device connected to the traveling motor can operate to perform traveling operations.

[0077] It should be noted that the main pump 16 is the core power source of the down-the-hole drill rig 1. The main pump 16 mainly includes a hydraulic pump, which is usually directly driven by the engine 111. Here, the engine 111 can be a diesel engine, and the drive method can be through a coupling or a gearbox. The main pump 16 can convert the mechanical potential energy output by the engine 111 into hydraulic energy, that is, convert the rotational power of the engine 111 into a high-pressure oil flow, and is the pusher of hydraulic oil. The pressure and flow rate generated by the main pump 16 determine the amount of force and speed that the entire down-the-hole drill rig 1 can output, and is the basic power source for the down-the-hole drill rig 1 to perform various working modes.

[0078] The connection between the main pump 16 and the drilling rig's operating motor 14 is as follows: the output end of the main pump 16 is connected to a hydraulic valve group that controls the drilling operation via a hydraulic pipeline, such as the valve group containing the operating solenoid valve 1012. This valve group is then connected to the drilling operating motor. The engine 111 drives the main pump 16 to rotate. The main pump 16 rotates and draws in hydraulic oil from the oil tank, pressurizes it, and outputs a high-pressure hydraulic oil flow. When the drilling rig is in drilling operation mode, i.e., when the operating solenoid valve 1012 is energized, the high-pressure oil flow is guided through the operating solenoid valve 1012 and its valve group to the drilling rig's operating motor 14. The high-pressure hydraulic flow drives the drilling rig's operating motor 14 to rotate. The rotation output of the drilling rig's operating motor 14 drives the connected impactor 15 to rotate, thereby realizing the drilling operation.

[0079] The main pump 16 is connected to the travel motor as follows: the output end of the main pump 16 is also connected to the hydraulic valve group controlling travel, such as the travel solenoid valve, through a hydraulic pipeline. This valve group is connected to the travel motor. The engine 111 drives the main pump 16 to rotate, and the main pump 16 outputs high-pressure hydraulic oil. When the down-the-hole drill rig 1 is in travel mode, that is, when the travel solenoid valve is energized, the high-pressure oil flow is guided to the travel motor through the travel solenoid valve and its valve group. The high-pressure hydraulic oil drives the travel motor to rotate, and the rotation output of the travel motor drives the travel device connected to it, such as a track or tire drive mechanism, thereby moving the entire down-the-hole drill rig 1 and realizing travel operation.

[0080] In this embodiment, by using a single main pump 16 with multiple output connections, one main pump 16 can simultaneously provide hydraulic power for drilling and traveling operations, simplifying the overall structure and reducing the cost, weight, and complexity of the down-the-hole drill. Furthermore, since the two working modes are independent of each other and do not work simultaneously, the stability and safety of the down-the-hole drill system are further guaranteed.

[0081] In some implementations, please refer to Figure 5 , Figure 5 Another structural schematic diagram of the down-the-hole drill provided in some embodiments of this application is shown below. Figure 5 As shown, the down-the-hole drill rig 1 also includes: a compression power mechanism 17; one end of the compression power mechanism 17 is connected to the engine 111, and the other end is connected to the air compressor 112, for providing pressure to the air compressor 112 under the drive of the engine 111 to generate air pressure in the air compressor 112, so as to drive the impactor 15 connected to the air compressor 112 to drill downwards to perform drilling operations; the impactor 15 is connected to the drilling operation execution motor and the air compressor 112 respectively, and is driven to rotate by the driving force provided by the drilling operation execution motor and driven to drill downwards by the air pressure provided by the air compressor 112 to perform drilling operations.

[0082] Here, the compression power mechanism 17 can be an air compression power mechanism. For example, the compression power mechanism 17 includes a screw compression power mechanism. The function of the compression power mechanism 17 is to convert the mechanical potential energy output by the engine 111 into air pressure potential energy, that is, to convert the rotational power output by the engine 111 into the power to compress air. The compression power mechanism 17 draws in atmospheric pressure air and compresses it mechanically, reducing its volume and increasing its pressure. This mechanical method can be, for example, piston reciprocating motion, screw rotation, etc., without any limitation. The compression power mechanism 17 outputs a high-pressure compressed air flow.

[0083] The input shaft of the compression power mechanism 17 is directly connected to the output shaft of the engine 111 through a mechanical transmission device, which can be a coupling, pulley, or gearbox, etc. The rotation of the engine 111 generates rotational power, which directly drives the input shaft of the compression power mechanism 17 to rotate, and the rotation of the compression power mechanism 17 performs its function of compressing air.

[0084] For example, the compression power mechanism 17 is also connected to the air compressor 112. The compression power mechanism 17 delivers compressed air generated by compressing the gas in the air compressor 112 to the impactor 15 connected to the air compressor 112, providing a power source for the impactor 15. The impactor 15 also has a specific chamber capable of containing high-pressure air. When the high-pressure air enters the specific chamber inside the impactor 15, it generates a powerful, high-frequency, downward air pressure thrust or impact force, thereby realizing the downward drilling action in the drilling operation.

[0085] In this embodiment, by requiring only one engine to simultaneously drive the main pump and the compression power mechanism, the overall structure is simplified, reducing the cost, weight, and complexity of the down-the-hole drill rig. Simultaneously, by using the engine to drive both the main pump and the compression power mechanism, the impactor can receive both hydraulic and pneumatic power sources. Then, by controlling their respective solenoid valves (the operating solenoid valve controls the flow of hydraulic oil to the rotary motor, and the air supply solenoid valve controls the flow of compressed air to the impactor), the rotation and impact actions can be easily started and stopped. Mechanically driven compression power mechanisms are generally more reliable and have higher power density in engineering machinery than independently driven electric compression power mechanisms. This design ensures that the rotational and impact powers are perfectly matched and work in tandem, providing optimal working conditions for the impactor, thereby achieving efficient and rapid rock drilling. Furthermore, the absence of an additional electric motor or independent power source to drive the compression power mechanism improves the equipment's self-sufficiency and convenience in field operations.

[0086] In some implementations, please refer to Figure 6 , Figure 6 Another structural schematic diagram of the down-the-hole drill provided in some embodiments of this application is shown below. Figure 6As shown, the air compressor 112 is also provided with a lower limit pressure valve 1123, which is used to provide a lower limit air pressure to the air compressor 112 so that the air compressor 112 can operate at least at the lower limit air pressure.

[0087] It should be noted that the lower limit pressure valve 1123 here is a pressure control valve, whose core function is to ensure that the air pressure inside the air compressor 112 does not fall below a certain set minimum safe pressure. Thus, the lower limit pressure valve can maintain the flow of oil inside the air compressor to ensure sufficient lubrication, and also ensure that the air compressor can be loaded and pressurized smoothly.

[0088] For example, the lower limit pressure valve 1123 is installed in the main gas circuit, specifically between the oil separator and the gas supply solenoid valve 1011, and supplies a portion of the high-pressure gas, which contains almost no oil, to the gas supply end through the lower limit pressure valve 1123. The lower limit pressure valve 1123 here can be referred to as the minimum pressure valve.

[0089] Thus, in this embodiment, by setting a lower limit pressure valve, the down-the-hole drill can maintain a minimum air pressure reserve even in non-drilling operation mode. When there is a sudden large demand for air downstream, it can provide a buffer for pressure fluctuations, so that the system pressure will not drop to a dangerous low point instantly, allowing the air compressor to react time to increase the air supply, thereby improving the stability and efficiency of the entire down-the-hole drill operation process, and extending the service life of the down-the-hole drill.

[0090] Based on the same inventive concept as the foregoing embodiments, the method provided by the foregoing embodiments will be illustrated by a specific example below, in which the example is taken as an example.

[0091] As a key component of integrated down-the-hole drills, the air compressor system provides pressurized air for rock drilling operations, drives the impactor to break up the rock, and blows the rock debris out of the hole. Its shaft power accounts for more than 50% of the total engine power; therefore, energy conservation and consumption reduction of the air compressor system have a significant impact on the energy consumption of down-the-hole drills.

[0092] For example, a down-the-hole (DH) drill rig includes an air compressor system and a control device. The control device detects the operating mode of the DH drill rig and then controls the operating state of the air compressor system based on the operating mode, thereby reducing the energy consumption of the air compressor system during non-drilling operation modes of the DH drill rig. For example, the air compressor system of the DH drill rig further includes an air compressor and an engine. For example, the air compressor of the DH drill rig is driven by the engine, such as the flywheel end of an engine. For example, the air compressor and the flywheel are connected by a flexible coupling. When the DH drill rig starts, it directly drives the air compressor system. The other end of the engine drives the main pump or hydraulic pump, providing a power source to various actuators.

[0093] Please see Figure 7 , Figure 7 Specific structural schematic diagrams of down-the-hole drills provided for some embodiments of this application, such as... Figure 7 As shown, the air compressor's air circuit system consists of a main air circuit and a control air circuit. The main air circuit enters the screw compressor through the intake valve via an air filter, mixes with the screw oil, and is compressed by the screw rotor to form a high-temperature, high-pressure oil-gas mixture. The mixture is discharged from the air compressor into an oil separator. After filtration by the oil separator core, a portion of the almost oil-free high-pressure gas is supplied to the intake or supply end through a minimum pressure valve (which can be understood as the lower limit pressure valve mentioned above). The other portion serves as control air pressure, passing through a filter, a loading / unloading solenoid valve, and a proportional valve to control the opening of the intake valve and regulate the system's air consumption. The screw compressor can be understood as the compression power mechanism described in the above embodiment.

[0094] The oil circuit from the main pump to the actuator is controlled by various solenoid valves, whose on / off signals are transmitted to the controller. The controller uses these signals to make logical judgments and automatically adjusts the engine's output speed. During normal drilling operations, the air compressor system provides compressed gas to power the impactor for rock drilling, ensuring the exhaust pressure reaches the rated value to guarantee operational efficiency. However, during boom connection, attitude adjustment, and machine movement, the air compressor system is not required to provide compressed gas. Therefore, in these auxiliary operating conditions, the controller detects the real-time status of the entire machine to automatically control the engine speed and switch the air compressor to unloaded mode, maintaining the air compressor system at a lower pressure. This significantly reduces the engine's output power, thereby lowering the overall fuel consumption.

[0095] Here, the signals received by the controller refer to the gain / loss electrical signals from the working solenoid valve, the unloading solenoid valve, the traveling solenoid valve, the attitude adjustment solenoid valve, and the air supply solenoid valve. Based on the gain / loss electrical signals from these valves, as described in the above embodiments, the operating mode of the down-the-hole drill is determined, and the air compressor pressure and engine speed are adjusted according to different operating modes. Therefore, this embodiment of the application links the first solenoid valve at the front end of the down-the-hole drill, which can reflect the operating mode, with the air compressor system at the back end, such as the engine and air compressor, through the controller, thereby reducing manual experience-based control and achieving real-time, accurate, and reliable use of the down-the-hole drill. Specifically, in the drilling operation mode of the down-the-hole drill, the engine speed can be adjusted to 1800 rpm, the loading / unloading solenoid valve is energized, and the air compressor loads and exhausts air; in the unloading mode, traveling mode, and attitude adjustment mode, the engine speed is 1400 rpm, the loading / unloading solenoid valve is de-energized, and the air compressor unloads and does not exhaust air. Furthermore, by automatically detecting the working mode of the down-the-hole drill, the opening and closing of the air compressor loading and unloading solenoid valves are switched, reducing the engine speed and system pressure, thereby reducing the overall energy consumption of the machine and achieving the goal of energy saving and efficiency improvement.

[0096] Here, the controller performs logical judgments based on the received signals. The specific judgment logic is as follows:

[0097] Specifically, please refer to Figure 8 , Figure 8 A schematic diagram of the controller control logic of a down-the-hole drill rig provided in some embodiments of this application is shown below. Figure 8 As shown:

[0098] Drilling operation mode: When the air supply solenoid valve of the drilling rig is energized and the air supply valve is opened, and the working solenoid valve is energized at the same time, the air compressor starts to supply air to the whole machine, and the drilling rig starts to work.

[0099] Rod connection / unconnection mode: When the drilling rig's air supply solenoid valve is de-energized and the air supply ball valve is closed, and the rod connection / unconnection solenoid valve is simultaneously energized, the rod connection / unconnection action oil circuit is opened, and this is the rod connection / unconnection mode;

[0100] Travel mode: When the drilling rig's air supply solenoid valve is de-energized and the air supply ball valve is closed, and at the same time the travel solenoid valve is energized and the travel oil circuit is opened, this is the travel mode;

[0101] Attitude Adjustment Mode: When the air supply solenoid valve of the drilling rig is de-energized and the air supply ball valve is closed, and the attitude adjustment solenoid valve is energized at the same time, the adjustment action oil circuit is opened, and this is the attitude adjustment mode.

[0102] Thus, during the operation of the down-the-hole drill, in order to prevent misoperation, the above four working modes are independent of each other, thereby ensuring that the down-the-hole drill only works in one working mode, thus ensuring the reliability of adjusting energy consumption based on the working mode, and thus ensuring both energy saving and reliability of the down-the-hole drill.

[0103] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A down-the-hole drill, characterized in that, include: A control device for the air compressor system of a down-the-hole drilling rig and an air compressor system connected to the control device; The control device includes: a first solenoid valve installed on the down-the-hole drill rig, and a controller; The input terminal of the controller is connected to the first solenoid valve, and the output terminal of the controller is connected to the air compressor system.

2. The down-the-hole drill rig according to claim 1, characterized in that, The air compressor system includes: an engine and / or an air compressor.

3. The down-the-hole drill rig according to claim 2, characterized in that, The down-the-hole drill rig also includes: a drilling operation execution motor and an impactor, wherein the drilling operation execution motor is connected to the impactor of the down-the-hole drill rig and is used to drive the impactor of the down-the-hole drill rig to rotate and move forward; The first solenoid valve includes: a working solenoid valve connected to the drilling rig's working motor. When the working solenoid valve is energized, the drilling rig's working motor operates; when the working solenoid valve is de-energized, the drilling working motor stops.

4. The down-the-hole drill rig according to claim 2, characterized in that, The down-the-hole drill also includes: an air supply system connected to an air compressor for supplying gas to the air compressor; The first solenoid valve further includes: an air supply solenoid valve connected to the air circuit system. When the air supply solenoid valve is energized, the air circuit system opens to supply air to the air compressor. When the air supply solenoid valve is de-energized, the air circuit system closes to stop supplying air to the air compressor.

5. The down-the-hole drill rig according to claim 2, characterized in that, The down-the-hole drill rig also includes: a non-operating device; The first solenoid valve further includes: a non-operating solenoid valve connected to the non-operating device. When the non-operating solenoid valve is energized, the non-operating device operates; when the non-operating solenoid valve is de-energized, the non-operating device stops operating.

6. The down-the-hole drill rig according to claim 2, characterized in that, The air compressor is connected to the impactor of the down-the-hole drill, and the air compressor can provide the impactor with a downward air pressure thrust. The air compressor is also equipped with a second solenoid valve. When the second solenoid valve is energized, the air pressure of the air compressor is in a loaded state. When the second solenoid valve is de-energized, the air pressure of the air compressor is in an unloaded state.

7. The down-the-hole drill rig according to claim 5, characterized in that, The non-operating device also includes at least one of the following: The unloading rod actuating cylinder and the unloading rod device connected to the unloading rod actuating cylinder, wherein the unloading rod actuating cylinder is used to drive the unloading rod device to enable the down-the-hole drill to perform the unloading rod operation; A travel motor and a travel device connected to the travel motor, wherein the travel motor is used to drive the travel device to enable the down-the-hole drill to perform travel operations; The adjustment cylinder is used to drive the attitude adjustment device to enable the down-the-hole drill to perform attitude adjustment operations. The non-operating solenoid valve includes at least one of the following: The unloading rod solenoid valve is connected to the unloading rod actuating cylinder. When the unloading rod solenoid valve is energized, the unloading rod actuating cylinder moves; when the unloading rod solenoid valve is de-energized, the unloading rod actuating cylinder stops moving. The solenoid valve connected to the walking motor operates when the solenoid valve is energized and stops when the solenoid valve is de-energized. The attitude adjustment solenoid valve is connected to the adjustment cylinder. When the attitude adjustment solenoid valve is energized, the adjustment cylinder moves; when the attitude adjustment solenoid valve is de-energized, the adjustment cylinder stops working.

8. The down-the-hole drill rig according to claim 7, characterized in that, The down-the-hole drill rig also includes: a main pump; The main pump is connected to the engine at one end and to the drilling operation execution motor at the other end, and is used to drive the drilling operation execution motor to rotate under the drive of the engine so that the impactor connected to the drilling operation execution motor can rotate. The main pump is also connected to the walking device at one end, and is used to drive the walking motor to rotate under the drive of the engine so that the walking device connected to the walking motor can work.

9. The down-the-hole drill rig according to claim 7, characterized in that, The down-the-hole drill rig also includes: a compression power mechanism; The compression power mechanism is connected to the engine at one end and to the air compressor at the other end. It is used to provide pressure to the air compressor under the drive of the engine so that air pressure is generated inside the air compressor to drive the impactor connected to the air compressor to drill downward. The impactor is connected to the drilling operation motor and the air compressor respectively. The driving force provided by the drilling operation motor drives the impactor to rotate and the air pressure provided by the air compressor drives the impactor to drill downwards.

10. The down-the-hole drill rig according to claim 2, characterized in that, The air compressor is also equipped with a lower limit pressure valve, which is used to provide a lower limit air pressure to the air compressor so that the air compressor can operate at least at the lower limit air pressure.

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