A power control device for the air compressor of a rock drilling rig

Abstract

This invention belongs to the field of drilling rig air compressor control technology, and relates to a power control device for an air compressor of a rock drilling rig. It includes a clutch, a detection unit, and a control unit. The drilling rig engine is connected to the clutch via a coupling, and the air compressor is connected to the drilling rig engine via the clutch. Both the air compressor and the drilling rig engine have detection units, and the control unit is connected to the clutch. This invention allows the air compressor to disengage and depressurize during non-drilling operations such as vehicle movement or rod unloading, preventing unnecessary energy consumption and achieving energy saving. The reduced engagement time between the air compressor and the coupling significantly improves system reliability. The detection unit allows for real-time monitoring of the operating status of the air compressor and the drilling rig engine. Combined with the control unit, intelligent control can be achieved, automatically adjusting the air compressor's operating status and protecting the safety of equipment and operators.

Description

Technical Field

[0001] This invention relates to the field of air compressor control technology for drilling rigs, and more particularly to a power control device for an air compressor of a rock drilling rig. Background Technology

[0002] In the operation of rock drilling rigs in metal mines, the air compressor, as a key power device, plays a vital role in ensuring the efficiency and continuity of rock drilling operations. However, in the actual use of rock drilling rigs, due to the diversity of working environments and operational needs, the continuous operation of the air compressor is not always necessary and may bring a series of problems.

[0003] When the rock drilling rig is moving vehicles or unloading rods, the dust collection system does not need to work because these operations do not involve the rock drilling process. However, the air compressor is often still running at this time, which not only leads to unnecessary energy waste and increased fuel consumption, but also increases the load on the drilling rig engine and affects the overall energy efficiency of the machine.

[0004] When the vehicle is started, the air compressor is directly connected to the drilling rig engine via a coupling, which increases the starting load on the drilling rig engine. Especially in winter when the ambient temperature is low, the drilling rig engine is already difficult to start, and the extra load of the air compressor will further exacerbate this problem, affecting the normal start-up and use of the rock drilling rig. This will lead to a reduction in the lifespan of these components and increase the cost of maintenance and replacement. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a power control device for the air compressor of a rock drilling rig.

[0006] The technical solution of the present invention is achieved through the following scheme: a power control device for an air compressor of a rock drilling rig, comprising a rock drilling rig, wherein a drilling rig engine, a coupling and an air compressor are installed inside the rock drilling rig, the air compressor is connected to the air treatment unit of the rock drilling rig, and further comprising a clutch, a detection unit and a control unit, wherein the drilling rig engine is connected to the clutch through the coupling, the air compressor is connected to the drilling rig engine through the clutch, both the air compressor and the drilling rig engine are provided with a detection unit, the control unit is connected to the clutch, and the detection unit is communicatively connected to the control unit;

[0007] The clutch includes a drive hub and a pneumatic drive disc. The drive hub is connected to the output shaft of the drilling rig engine via a coupling. The pneumatic drive disc pressurizes and connects to the drive hub to drive the air compressor spindle. The pneumatic drive disc depressurizes and separates from the drive hub to stop the rotation of the pneumatic drive disc and the air compressor spindle. The pneumatic drive disc is connected to an external air source and the air treatment unit of the rock drilling rig via a control unit.

[0008] Through the above technical solutions, when the air compressor is not needed for non-drilling operations such as vehicle movement and rod unloading, the control unit can release the clutch and stop the air compressor spindle from rotating, avoiding unnecessary energy consumption and achieving energy saving and consumption reduction. The engagement time between the air compressor and the coupling is reduced, greatly improving the system reliability. The detection unit allows the working status of the air compressor and the drilling rig engine to be monitored in real time. Combined with the control unit, intelligent control can be achieved, automatically adjusting the operating status of the air compressor and protecting the safety of equipment and operators.

[0009] Preferably, the detection unit includes a pressure sensor and several temperature sensors. The pressure sensor is connected to the gas output port of the air compressor, and temperature sensors are installed at both the gas output port and the gas input port of the air compressor.

[0010] Preferably, the detection unit further includes a speed sensor, and the drilling engine is equipped with a speed sensor to detect the working status of the drilling engine.

[0011] Preferably, the control unit includes a control valve and a manual controller. The control valve is equipped with a manual controller, the control valve is communicatively connected to a detection unit, the control valve is connected to a pressure block, and the control valve is externally connected to the air treatment unit of the rock drilling rig and an external air source.

[0012] Preferably, the control valve includes a signal receiving port, a gas input port, and an output control port. The signal receiving port is communicatively connected to a detection unit to receive electrical signals from the detection unit. The gas input port is externally connected to the air handling unit of the rock drilling rig and an external air source. The output control port is connected to a pneumatic drive disc.

[0013] Preferably, the air compressor further includes a main shaft, a driven shaft, and a connecting cover. The main shaft drives the driven shaft to compress air. The connecting cover is located between the clutch and the air compressor. One end of the connecting cover is fixedly installed on the air compressor, and the other end of the connecting cover is assembled with the clutch by screws.

[0014] Preferably, the air handling unit of the rock drilling rig is connected to an external air source via a pneumatic valve.

[0015] The specific steps of the power control method for the air compressor of the rock drilling rig are as follows:

[0016] Step A: The detection unit sends a feedback signal, and the control unit controls the clutch engagement and disengagement;

[0017] Step B: The air compressor stops or starts as the clutch engages or disengages.

[0018] Preferably, step A includes the following specific control steps:

[0019] a1, The control unit has two modes: manual and automatic;

[0020] a2, the control unit uses an external air source and the air handling unit of the rock drilling rig as its drive.

[0021] Preferably, in step a2, when the air compressor is not started, the control unit uses an external air source to control the engagement and disengagement of the clutch. When the air compressor is started, the air compressor provides compressed air to the air treatment unit of the rock drilling rig. At this time, the driving source is the air treatment unit of the rock drilling rig.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. This invention relates to a system where, when the air compressor is not needed for non-drilling operations such as vehicle movement or rod unloading on a rock drilling rig, the control unit releases pressure and disengages the clutch, stopping the air compressor spindle from rotating. This avoids unnecessary energy consumption, achieving energy saving and consumption reduction. The engagement time between the air compressor and the coupling is reduced, greatly improving system reliability. The detection unit allows for real-time monitoring of the operating status of the air compressor and the drilling rig engine. Combined with the control unit, intelligent control can be achieved, automatically adjusting the operating status of the air compressor and protecting the safety of equipment and operators.

[0024] 2. The pressure sensor, temperature sensor, and speed sensor integrated in the detection unit can monitor the air pressure at the air compressor's gas output port, the overall temperature of the air compressor, and the working status of the drilling rig engine in real time. They convert physical signals into electrical signals and transmit them to the control unit in real time, enabling the control unit to make accurate judgments and responses based on real-time operating data.

[0025] 3. A manual controller has been added to the control unit, allowing operators to flexibly choose the operating mode according to the actual situation. In emergency situations, the system can be quickly switched to manual mode for intervention.

[0026] 4. When the air compressor is not started, an external air source is used as the drive source for the control unit. When it is started, it is converted into compressed air generated by the air compressor, which can effectively increase the energy utilization rate and reduce the external energy consumption. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the system structure of the present invention;

[0028] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 3 This is a three-dimensional structural schematic diagram of the clutch of the present invention;

[0030] Figure 4 This is a three-dimensional structural diagram of the air compressor of the present invention.

[0031] Explanation of reference numerals in the attached drawings: 1. Drilling rig engine; 2. Coupling; 3. Clutch; 4. Air compressor; 5. Connecting cover. Detailed Implementation

[0032] To better understand the above-mentioned objectives, features and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein. Therefore, the invention is not limited to the specific embodiments disclosed in the following specification. The invention will be further described in detail below with reference to the accompanying drawings.

[0034] A power control method for the air compressor of a rock drilling rig, such as Figures 1-4 As shown, the system includes a rock drilling rig, which houses a drilling engine 1, a coupling 2, and an air compressor 4. The air compressor 4 is connected to the rock drilling rig's air treatment unit to provide compressed air for the rig. The system pneumatically controls the rock drilling rig and also includes a clutch 3, a detection unit, and a control unit. The drilling engine 1 is connected to the clutch 3 via the coupling 2, and the air compressor 4 is connected to the drilling engine 1 via the clutch 3. Both the air compressor 4 and the drilling engine 1 contain a detection unit. By connecting the air compressor 4 to the clutch 3, the engagement time between the air compressor 4 and the coupling 2 is reduced by 40%, significantly improving the overall system reliability. The clutch 3 is a pneumatic clutch, comprising a drive hub and a pneumatic drive disc. The drive hub is connected to the output shaft of the drilling engine 1 via the coupling 2. The pneumatic drive disc pressurizes and connects to the drive hub to drive the air compressor spindle. Depressurizing the pneumatic drive disc separates it from the drive hub, allowing the air pressure to return to normal. The drive disc and the air compressor spindle stop rotating. The pneumatic drive disc is connected to an external air source and the air treatment unit of the rock drilling rig through the control unit. The pneumatic drive disc is equipped with a pressure boosting port. Through the control unit, the air compressor 4 is pushed and the pressure is released to separate, thus completing the separation of the air compressor 4 from the drilling rig engine 1. This reduces the unnecessary load on the drilling rig engine 1. The engagement time between the drilling rig engine 1 and the air compressor 4 is shortened by 40%, oil consumption is reduced, economy is improved, the working life of the device is increased, and downtime and maintenance costs caused by equipment failure are reduced. The air compressor 4 provides compressed air to the air treatment unit of the rock drilling rig, ensuring that the rock drill maintains its optimal condition during operation, thereby ensuring the quality of the borehole. When the drilling rig engine 1 starts, it no longer bears the additional load of the air compressor 4. Especially in low-temperature environments such as winter, it can significantly reduce the difficulty of starting and improve the starting performance of the drilling rig engine 1. The detection unit is connected to the control unit.

[0035] The detection unit includes a pressure sensor and several temperature sensors. The pressure sensor is connected to the air compressor's gas output port to convert the air pressure signal from the air compressor's gas output port into an electrical signal and output this electrical signal to the control unit. Temperature sensors are installed at both the air compressor's gas output port and air compressor's gas input port to convert the overall temperature signal of the air compressor 4 into an electrical signal and output this electrical signal to the control unit. The detection unit also includes a speed sensor. The drilling engine 1 is equipped with a speed sensor to detect the operating status of the drilling engine 1. During the initial stage of vehicle startup, since the drilling engine 1 rotates at a relatively slow speed, connecting the air compressor 4 at this time would increase the starting load. Through the detection of the speed sensor, the control unit can intelligently determine the engine's operating status and disconnect the air compressor 4 when necessary, thus avoiding potential problems caused by connecting the air compressor 4 at the initial stage of engine startup. When the air compressor 4 is working normally, the pressure sensor and temperature sensor detect the pressure generated by the air compressor 4 and the overall temperature of the air compressor 4 to ensure that the output air pressure is within a safe and stable range. Through the detection of the pressure sensor and temperature sensor, the control unit can monitor the operating status of the air compressor 4 in real time, promptly detect potential faults or abnormalities in the air compressor 4, such as overheating or overpressure, and control the clutch 3 to disconnect the air compressor 4 to prevent the fault from escalating further.

[0036] The control unit includes a control valve and a manual controller. The control valve is equipped with a manual controller and is connected to a detection unit via communication. The control valve is also connected to a pressure block and externally to the rock drilling rig's air treatment unit and an external air source. The control valve includes a signal receiver, a gas inlet, and an output control port. The signal receiver is connected to the detection unit to receive electrical signals from it. The gas inlet is connected to the rock drilling rig's air treatment unit and the external air source. The output control port is connected to a pneumatic drive plate. The rock drilling rig's air treatment unit is connected to the external air source via a pneumatic valve. When the pneumatic valve is normally open, the control valve is closed, and the external air source does not flow directly to the output control port. When manual control is activated, the gas supply... Air is introduced at the inlet and pressurized by the output control port to the clutch 3. At this time, the drive hub and the pneumatic drive disc are connected. Once the air compressor 4 starts working and generates compressed air, the pneumatic valve is driven to close, disconnecting the pipeline between the external air source and the control valve. The automatic closing of the pneumatic valve reduces the continuous consumption of the external air source and lowers operating costs. When the vehicle starts, moves, or unloads the rod, the speed of the drilling rig engine 1 is low and does not reach the driving value of the air compressor 4. At this time, the air compressor 4 or the control valve will not be started, avoiding unnecessary energy consumption. When the drilling rig is ready to drill, the engine speed is increased to a stable value, and the control valve receives a signal to open. Only then does it start to use the compressed air generated by the air compressor 4, improving energy utilization efficiency.

[0037] When the air compressor 4 starts running, the signal receiving port of the control valve begins to receive feedback signals from the temperature sensor and pressure sensor, and monitors key parameters such as temperature and pressure of the air compressor 4 in real time to ensure the stable operation of the air compressor 4. Through the manual controller, the operator can conveniently and subjectively control the connection and disconnection of the clutch 3 to realize the rapid start and stop of the rock drilling rig.

[0038] The air compressor 4 also includes a main shaft, a driven shaft, and a connecting cover 5. The main shaft drives the driven shaft to compress air. The connecting cover 5 is located between the clutch 3 and the air compressor 4. One end of the connecting cover 5 is fixedly installed on the air compressor 4, and the other end of the connecting cover 5 is assembled with the clutch 3 by screws. The connecting cover 5 can also protect the clutch 3 and other key components from external impacts and damage.

[0039] Example 2: A power control method for the air compressor of a rock drilling rig, such as... Figures 1-4 As shown, the operation steps are as follows:

[0040] Step A: The detection unit sends a feedback signal, and the control unit controls the clutch to engage or disengage in step 3;

[0041] a1, The control unit has two modes: manual and automatic;

[0042] a2, the control unit uses an external air source and the air handling unit of the rock drilling rig as its drive;

[0043] In step a2, when the air compressor 4 is not started, the control unit uses an external air source to control the engagement and disengagement of the clutch 3. When the air compressor 4 starts, it provides compressed air to the rock drilling rig's air treatment unit. At this time, the driving source is the rock drilling rig's air treatment unit. When starting with a manual controller, since the air compressor 4 is not working, there is no compressed air in the rock drilling rig's air treatment unit. Only an external air source can provide compressed air to supply air pressure to the clutch 3, enabling it to engage. The power generated by the drilling rig's engine 1 is transmitted to the air compressor 4, driving the air compressor 4 to generate compressed air. A pneumatic valve is installed on the pipeline between the external air source and the gas inlet of the control valve. This pneumatic valve is connected to the rock drilling rig's air treatment unit. When compressed air is injected into the rock drilling rig's air treatment unit, the compressed air drives this pneumatic valve, disconnecting the pipeline between the external air source and the control valve, saving resources. When the subsequent detection unit detects a problem and the control valve is automatically triggered, or when the operator discovers a problem and uses manual control, the driving source is the compressed air in the rock drilling rig's air treatment unit.

[0044] Step B: The air compressor 4 stops or starts as the clutch 3 engages or disengages.

[0045] Based on the actual operational needs of the rock drilling rig, the start and stop of the air compressor 4 are controlled to avoid unnecessary energy waste and increased load on the drilling rig engine 1, while extending the service life of the drilling rig engine 1, coupling 2 and air compressor 4, thereby improving the overall performance and economic benefits of the rock drilling rig.

[0046] All parts and equipment use conventional models from existing technologies, and the circuit connections use conventional connection methods from existing technologies, which will not be described in detail here. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A power control device for an air compressor of a rock drilling rig, comprising a rock drilling rig, wherein a drilling engine (1), a coupling (2), and an air compressor (4) are installed inside the rock drilling rig, and the air compressor (4) is connected to the air handling unit of the rock drilling rig, characterized in that: It also includes a clutch (3), a detection unit and a control unit. The drilling engine (1) is connected to the clutch (3) via a coupling (2). The air compressor (4) is connected to the drilling engine (1) via the clutch (3). Both the air compressor (4) and the drilling engine (1) are equipped with detection units. The control unit is connected to the clutch (3). The detection unit is communicatively connected to the control unit. The clutch (3) includes an active hub and a pneumatic drive disc. The active hub is connected to the output shaft of the drilling engine (1) via a coupling (2). The pneumatic drive disc pressurizes and connects to the active hub to drive the air compressor spindle. The pneumatic drive disc depressurizes and separates from the active hub to stop the pneumatic drive disc from rotating with the air compressor spindle. The pneumatic drive disc is connected to an external air source and the air treatment unit of the rock drilling rig via a control unit. The control unit includes a control valve and a manual controller. The control valve is equipped with a manual controller. The control valve is communicatively connected to a detection unit. The control valve is connected to a pressure block. The control valve is externally connected to the air handling unit of a rock drilling rig and an external air source. The control valve includes a signal receiving port, a gas input port, and an output control port. The signal receiving port is connected to the detection unit. The gas input port is connected to the air processing unit of the rock drilling rig and an external air source. The output control port is connected to the air pressure drive plate. The air handling unit of the rock drilling rig is connected to an external air source via a pneumatic valve.

2. The power control device for the air compressor of a rock drilling rig according to claim 1, characterized in that: The detection unit includes a pressure sensor and several temperature sensors. The pressure sensor is connected to the gas output port of the air compressor, and temperature sensors are installed at both the gas output port and the gas input port of the air compressor.

3. The power control device for the air compressor of a rock drilling rig according to claim 2, characterized in that: The detection unit also includes a speed sensor. The drilling engine (1) is equipped with a speed sensor to detect the working status of the drilling engine (1).

4. The power control device for the air compressor of a rock drilling rig according to claim 2, characterized in that: The air compressor (4) also includes a main shaft, a driven shaft and a connecting cover (5). The main shaft drives the driven shaft to compress air. The connecting cover (5) is located between the clutch (3) and the air compressor (4). One end of the connecting cover (5) is fixedly installed on the air compressor (4), and the other end of the connecting cover (5) is assembled with the clutch (3) by screws.

5. A method for controlling the power of an air compressor in a rock drilling rig, characterized in that, Controlling the air compressor (4) using the control device described in claim 3 includes the following steps: Step A: The detection unit sends a feedback signal, and the control unit controls the clutch (3) to engage or disengage; Step B: The air compressor (4) stops or starts as the clutch (3) engages or disengages.

6. The power control method for the air compressor of a rock drilling rig according to claim 5, characterized in that: Step A includes the following specific control steps: a1, The control unit has two modes: manual and automatic; a2, the control unit uses an external air source and the air handling unit of the rock drilling rig as its drive.

7. The power control method for the air compressor of a rock drilling rig according to claim 6, characterized in that: In step a2, when the air compressor (4) is not started, the control unit uses an external air source to control the engagement and disengagement of the clutch (3). When the air compressor (4) is started, the air compressor (4) provides compressed air to the rock drilling machine air treatment unit. At this time, the driving source is the rock drilling machine air treatment unit.

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