Intelligent control system and method for dust collector and down-the-hole drill

Abstract

The application discloses a dust collector intelligent control system and method and a down-the-hole drill, wherein the electric control system comprises a dust raising sensor, a motor rotating speed sensor, a power device rotating speed sensor and a controller; the dust raising sensor, the motor rotating speed sensor and the power device rotating speed sensor are electrically connected to the controller respectively; the hydraulic control system comprises a power device, a hydraulic oil tank, a hydraulic pump, a dust collector motor control valve and a dust collector; the hydraulic oil tank is connected to the hydraulic pump, the dust collector motor control valve and the dust collector through hydraulic pipelines respectively; the dust collector motor control valve is connected to the hydraulic pump and the dust collector through hydraulic pipelines respectively. The dust collector intelligent control system can realize the accurate control of the matching between the motor rotating speed and the dust removal effect when the dust collector is working, thereby effectively improving the construction site environment; the dust collector motor brake valve is arranged, the motor can be rapidly braked, and the dust removal efficiency of the filter element of the dust collector can be effectively improved.

Description

Technical Field

[0001] This invention relates to an intelligent control system and method for a dust collector and a down-the-hole drill, belonging to the technical field of rock drilling equipment. Background Technology

[0002] Down-the-hole (DH) drills are a type of open-pit rock drilling rig. Their working principle involves using compressed air to drive a DH impactor to break rocks and expel rock cuttings from the hole. Rotation and propulsion are used to achieve the drilling function. They are widely used in mines, quarries, water conservancy projects, and railway and highway construction. During drilling, DH drills use air to remove cuttings, generating a large amount of dust. Dust collectors are used to collect this dust, and their effectiveness directly impacts the on-site working environment. Therefore, developing an intelligent control system for dust collectors that precisely matches the motor speed with the dust collection efficiency is particularly important.

[0003] Currently, existing solutions mainly consist of a hydraulic oil tank, engine, pump, relief valve, check valve, speed control valve, throttle valve, and dust collector. The existing dust collector control system works as follows: When the dust collector is working, pump 3 supplies oil to the dust collector 8 through pipelines. Simultaneously, the speed control valve 6 sets the dust collector speed. Check valve 5 replenishes oil to the motor when the dust collector stops. Throttle valve 7 increases the return oil pressure at port D of the dust collector motor, ensuring sufficient lubrication and heat dissipation of the motor bearings. The relief valve controls the maximum pressure in the oil circuit, protecting the motor.

[0004] Disadvantages of existing technology:

[0005] (1) A fixed speed can only be set at a certain engine speed. As the engine speed changes, the motor speed will also fluctuate, thus affecting the dust removal effect.

[0006] (2) The lack of a motor quick stop device caused the suction and jet airflows to be opposite, resulting in a reduction in the dust removal efficiency of the dust collector filter. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an intelligent control system for a dust collector and a down-the-hole drill.

[0008] To solve the above-mentioned technical problems, the present invention provides an intelligent control system for a dust collector, including an electrical control system and a hydraulic control system;

[0009] The electrical control system includes: a dust sensor, a motor speed sensor, a power unit speed sensor, and a controller; the dust sensor, motor speed sensor, and power unit speed sensor are each electrically connected to the controller.

[0010] The hydraulic control system includes: a power unit, a hydraulic oil tank, a hydraulic pump, a dust collector motor control valve, and a dust collector; the hydraulic oil tank is connected to the hydraulic pump, the dust collector motor control valve, and the dust collector respectively through hydraulic pipelines, and the dust collector motor control valve is connected to the hydraulic pump and the dust collector respectively through hydraulic pipelines.

[0011] The controller is electrically connected to the dust collector motor control valve;

[0012] The dust sensor collects dust data from the construction site, the motor speed sensor collects dust collector motor speed data, and the engine speed sensor collects power unit operating speed data. After the dust data, dust collector motor speed data, and power unit operating speed data from the construction site are processed by the controller, a control signal is output to the dust collector motor control valve. The dust collector motor control valve controls the amount of oil entering the dust collector motor in order to adjust the operating speed of the dust collector motor.

[0013] Furthermore, the power unit is connected to a hydraulic pump, the hydraulic pump's suction port is connected to a hydraulic oil tank, and the hydraulic pump's outlet port is connected to the high-pressure port P of the dust collector motor control valve; the low-pressure port T of the dust collector motor control valve is connected to the hydraulic oil tank, the outlet A of the dust collector motor control valve is connected to the dust collector motor inlet PA, the return port B of the dust collector motor control valve is connected to the dust collector motor return port PB, the return port C of the dust collector motor control valve is connected to the dust collector motor cooling return port PD; and the dust collector motor drain port D is connected to the hydraulic oil tank.

[0014] Furthermore, the dust collector motor control valve includes: an electro-proportional speed control valve, a one-way valve, an overflow valve, a brake valve, and a throttle valve;

[0015] The high-pressure port P of the dust collector motor control valve is connected to the oil inlet of the electro-proportional speed control valve, the oil inlet of the check valve, the oil inlet of the overflow valve, and the pilot oil port of the brake valve, respectively. It is also connected to the pressure test port PM and the oil outlet A of the dust collector motor control valve, respectively.

[0016] The low-pressure port T of the dust collector motor control valve is connected to the oil outlet of the electro-proportional speed control valve, the oil outlet of the throttle valve, the oil outlet of the check valve, the oil outlet of the overflow valve, and the oil outlet of the brake valve, respectively, and is also connected to the pressure test port TM of the dust collector motor control valve; the oil return port C of the dust collector motor control valve is connected to the oil inlet of the throttle valve, and the oil return port B of the dust collector motor control valve is connected to the oil inlet of the brake valve.

[0017] Furthermore, the power unit is an engine or an electric motor.

[0018] A method for intelligent control of a dust collector, comprising:

[0019] Obtain data on dust emissions, dust collector motor speed, and power unit operating speed at the construction site;

[0020] Based on the dust data from the construction site, the following processing steps will be taken:

[0021] When the dust emission data at the construction site is less than or equal to the set value, the dust collector motor maintains its current speed. When the dust emission data at the construction site is greater than the set value, the speed of the dust collector motor is adjusted so that the dust emission data is less than or equal to the set value, and then the dust collector motor maintains its operation at the adjusted speed.

[0022] Furthermore, adjusting the speed of the dust collector motor includes:

[0023] When the dust collector is working, the speed of the dust collector motor is adjusted by a dust collector motor control valve and a controller. The dust collector motor control valve includes: an electro-proportional speed control valve, a check valve, an overflow valve, a brake valve, and a throttle valve.

[0024] The controller receives dust data from the construction site, dust collector motor speed data, and power unit operating speed data, processes the received data, and outputs a control signal to the electro-proportional speed control valve when the dust data at the construction site exceeds the set value.

[0025] By controlling the opening state of the electro-proportional speed control valve through the control signal, a portion of the hydraulic oil is delivered to the dust collector motor through the outlet A of the dust collector motor control valve, and then flows back to the hydraulic oil tank through the opened brake valve; the other portion of the hydraulic oil flows directly back to the hydraulic oil tank through the electro-proportional speed control valve, thus completing the speed regulation of the dust collector motor.

[0026] Furthermore, it also includes: during the dust collector's shutdown process, when the dust collector motor is about to complete braking, replenishing oil to the dust collector motor through a one-way valve so that the dust collector motor can brake quickly.

[0027] Furthermore, the step of adjusting the speed of the dust collector motor when the dust emission data at the construction site exceeds a set value, so that the dust emission data is less than or equal to the set value, includes:

[0028] When the dust data at the construction site exceeds the set value, the speed of the dust collector motor is adjusted. If the dust data collected after adjustment still exceeds the set value, the speed of the dust collector motor is adjusted again until the dust data is less than or equal to the set value.

[0029] A down-the-hole drilling rig includes an intelligent control system for a dust collector.

[0030] A computer-readable storage medium storing one or more programs, said one or more programs including instructions that, when executed by a computing device, cause the computing device to perform any of the methods described.

[0031] The beneficial effects achieved by this invention are as follows:

[0032] (1) Dust collector intelligent control system. Through this control system, the motor speed and dust removal effect are precisely matched when the dust collector is working, thereby effectively improving the construction site environment.

[0033] (2) By setting a brake valve for the dust collector motor, the motor can be braked quickly, which can effectively improve the dust removal efficiency of the dust collector filter element. Attached Figure Description

[0034] Figure 1 Hardware schematic diagram of the electrical control system;

[0035] Figure 2 Electrical control system logic diagram;

[0036] Figure 3 Hydraulic control system schematic diagram;

[0037] Figure 4 Schematic diagram of the motor control valve block for dust collector;

[0038] Figure 1 In the middle: 1-Dust sensor, 2-Motor speed sensor, 3-Engine speed sensor, 4-Controller, 104-1-Electro-proportional speed control valve.

[0039] Figure 3 In the middle: 101-Engine (motor), 102-Hydraulic oil tank, 103-Hydraulic pump, 104-Dust collector motor control valve, 105-Dust collector.

[0040] Figure 4 In Chinese: 104-1-Electro-proportional speed control valve, 104-2-Check valve, 104-3-Relief valve, 104-4-Brake valve, 104-5-Throttle valve. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0042] Example 1: The present invention provides an intelligent control system for a dust collector, including an electrical control system and a hydraulic control system;

[0043] Electrical control systems include, for example Figure 1As shown: Dust sensor 1, motor speed sensor 2, engine speed sensor 3, controller 4, and electro-proportional speed control valve 104-1. When the electrical control system is working, dust sensor 1 collects dust data from the site, motor speed sensor 2 collects dust collector operating speed data, and engine speed sensor 3 collects engine operating speed data. This data is processed by controller 4, and the output signal is sent to electro-proportional speed control valve 104-1, thereby adjusting the dust collector motor operating speed. Specific control details are as follows... Figure 2 As shown: When the dust collector switch is turned on, the dust collector motor starts transporting at the initial speed; when the dust at the construction site is less than or equal to the set value, the dust collector motor maintains the initial speed; when the dust at the construction site is greater than the set value, the speed of the dust collector motor is adjusted according to the signal sent by the electrical control system to make the dust less than or equal to the set value, and the motor maintains the adjusted speed.

[0044] The hydraulic control system includes: engine (motor) 101, hydraulic oil tank 102, hydraulic pump 103, dust collector motor control valve 104, and dust collector 105.

[0045] like Figure 3 As shown, the engine (motor) 101 is connected to the hydraulic pump 103 to provide power; the oil suction port of the hydraulic pump 103 is connected to the hydraulic oil tank 102, and the oil outlet of the hydraulic pump 103 is connected to the high-pressure port P of the dust collector motor control valve 104; the low-pressure port T of the dust collector motor control valve 104 is connected to the hydraulic oil tank 102; the oil outlet A of the dust collector motor control valve 104 is connected to the motor PA port of the dust collector 105; the oil return port B of the dust collector motor control valve 104 is connected to the motor PB port of the dust collector 105; the oil return port C of the dust collector motor control valve 104 is connected to the motor PD port of the dust collector 105; and the motor D port of the dust collector 105 is connected to the hydraulic oil tank 102.

[0046] like Figure 4 As shown, the high-pressure port P of the dust collector motor control valve 104 is connected to the oil inlet 11 of the electro-proportional speed control valve 104-1, the oil inlet 21 of the check valve 104-2, the oil inlet 31 of the overflow valve 104-3, and the pilot oil port 43 of the brake valve 104-4, respectively. It is also connected to the pressure test port PM and the oil outlet A of the dust collector motor control valve 104, respectively. The low-pressure port T of the dust collector motor control valve 104 is connected to the oil outlet 12 of the electro-proportional speed control valve 104-1, respectively. The oil outlet 52 of the throttle valve 104-5, the oil outlet 22 of the check valve 104-2, the oil outlet 32 ​​of the overflow valve 104-3, and the oil outlet 42 of the brake valve 104-4 are connected, and are also connected to the pressure test port TM of the dust collector motor control valve 104 respectively; the oil return port C of the dust collector motor control valve 104 is connected to the oil inlet 51 of the throttle valve 104-5, and the oil return port B of the dust collector motor control valve 104 is connected to the oil inlet 41 of the brake valve 104-4.

[0047] Example 2, based on the same inventive concept as Example 1, introduces an intelligent control method for a dust collector, including:

[0048] Obtain data on dust emissions, dust collector motor speed, and power unit operating speed at the construction site;

[0049] Based on the dust data from the construction site, the following processing steps will be taken:

[0050] When the dust emission data at the construction site is less than or equal to the set value, the dust collector motor maintains its current speed. When the dust emission data at the construction site is greater than the set value, the speed of the dust collector motor is adjusted so that the dust emission data is less than or equal to the set value, and then the dust collector motor maintains its operation at the adjusted speed.

[0051] like Figure 3 , Figure 4As shown, when the dust collector is turned on and the hydraulic system of the dust collector is working, the engine (motor) 101 provides input power to the hydraulic pump 103. The hydraulic pump 103 delivers hydraulic oil through the P port of the integrator motor control valve 104 to the integrator motor control valve 104. Then, through the A port of the integrator motor control valve 104, the hydraulic oil is delivered to the PA port of the dust collector motor 105. The hydraulic oil enters the dust collector motor and drives the motor to rotate. A portion of the hydraulic oil flows back to the B port of the integrator motor control valve 104 through the PB port, and then flows back to the hydraulic oil tank 102 through the T port of the integrator motor control valve 104. A portion of the hydraulic oil flows back to the hydraulic oil tank 102 through the motor discharge port D. A portion of the hydraulic oil flows back to the C port of the integrator motor control valve 104 through the motor housing cooling chamber, and then flows back to the hydraulic oil tank 102 through the T port of the integrator motor control valve 104. When the dust collector 105 is not in operation and is in standby mode, the electro-proportional speed control valve 104-1 receives a signal from the controller and is fully open. Hydraulic oil flows back to the hydraulic oil tank 102 through the electro-proportional speed control valve 104-1, and the dust collector 105 motor does not run. When the dust collector is in operation, the electro-proportional speed control valve 104-1 receives an output signal from the controller to control its opening state. A portion of the hydraulic oil is delivered to the dust collector 105 motor through port A of the integrator motor control valve 104. At this time, under the control of high-pressure oil, port 3 of the brake valve 104-4 opens, and hydraulic oil flows back to the hydraulic oil tank 102 through the brake valve 104-4. A portion of the hydraulic oil flows back to the hydraulic oil tank 102 through the electro-proportional speed control valve 104-1, thereby adjusting the speed of the dust collector 105 motor to control the dust collection effect and ensure that the dust situation on site meets the set requirements. During dust collector operation, the pressure of the main oil circuit is controlled by setting the pressure value of the overflow valve 104-3, which protects the integrator motor. The flow rate of the hydraulic oil is controlled by setting the value of the regulating valve 104-5, ensuring that the hydraulic oil flowing back from the PD port of the dust collector motor achieves optimal heat dissipation for the hydraulic motor. When the dust collector stops working, the electro-proportional speed control valve 104-1 receives a signal from the controller and enters a fully open state. All the hydraulic oil flows back to the hydraulic oil tank 102 through the electro-proportional speed control valve 104-1. At this time, the oil pressure at port 3 of the brake valve 104-4 drops rapidly, the brake valve 104-4 closes, and the dust collector motor 105 quickly stops rotating. During the dust collector's shutdown process, due to inertia, the motor may continue to rotate in the working direction. In this case, oil can be replenished to the motor through the check valve 104-2. When the motor is about to complete braking, there may still be a set braking pressure at the PB port, which could cause the motor to reverse. In this case, oil can be replenished to the motor through the check valve in the brake valve 104-4 to prevent the motor from sucking in cavitation and causing damage.

[0052] Example 3, based on the same inventive concept as other examples, introduces a down-the-hole drill rig, including the aforementioned intelligent control system for the dust collector.

[0053] Example 4, based on the same inventive concept as other examples, describes a computer-readable storage medium storing one or more programs, the one or more programs including instructions that, when executed by a computing device, cause the computing device to perform any of the methods described.

[0054] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0055] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0056] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0057] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0058] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An intelligent control system for a dust collector, characterized in that, Including electrical control systems and hydraulic control systems; The electrical control system includes: a dust sensor, a motor speed sensor, a power unit speed sensor, and a controller; the dust sensor, motor speed sensor, and power unit speed sensor are each electrically connected to the controller. The hydraulic control system includes: a power unit, a hydraulic oil tank, a hydraulic pump, a dust collector motor control valve, and a dust collector; the hydraulic oil tank is connected to the hydraulic pump, the dust collector motor control valve, and the dust collector respectively through hydraulic pipelines, and the dust collector motor control valve is connected to the hydraulic pump and the dust collector respectively through hydraulic pipelines. The controller is electrically connected to the dust collector motor control valve; The dust sensor collects dust data from the construction site, the motor speed sensor collects dust collector motor speed data, and the engine speed sensor collects power unit operating speed data. After the dust data from the construction site, the dust collector motor speed data, and the power unit operating speed data are processed by the controller, a control signal is output to the dust collector motor control valve. The dust collector motor control valve controls the amount of oil entering the dust collector motor in order to adjust the operating speed of the dust collector motor. The dust collector motor control valve includes: an electro-proportional speed control valve, a check valve, an overflow valve, a brake valve, and a throttle valve; The high-pressure port P of the dust collector motor control valve is connected to the oil inlet of the electro-proportional speed control valve, the oil inlet of the check valve, the oil inlet of the overflow valve, and the pilot oil port of the brake valve, respectively. It is also connected to the pressure test port PM and the oil outlet A of the dust collector motor control valve, respectively. The low-pressure port T of the dust collector motor control valve is connected to the oil outlet of the electro-proportional speed control valve, the oil outlet of the throttle valve, the oil outlet of the check valve, the oil outlet of the overflow valve, and the oil outlet of the brake valve, respectively, and is also connected to the pressure test port TM of the dust collector motor control valve; the oil return port C of the dust collector motor control valve is connected to the oil inlet of the throttle valve, and the oil return port B of the dust collector motor control valve is connected to the oil inlet of the brake valve.

2. The intelligent control system for dust collectors according to claim 1, characterized in that, The power unit is connected to a hydraulic pump. The hydraulic pump's suction port is connected to a hydraulic oil tank, and the hydraulic pump's outlet port is connected to the high-pressure port P of the dust collector motor control valve. The low-pressure port T of the dust collector motor control valve is connected to the hydraulic oil tank. The outlet A of the dust collector motor control valve is connected to the motor inlet PA of the dust collector. The return port B of the dust collector motor control valve is connected to the motor return port PB of the dust collector. The return port C of the dust collector motor control valve is connected to the motor cooling return port PD of the dust collector. The motor drain port D of the dust collector is connected to the hydraulic oil tank.

3. The intelligent control system for dust collectors according to claim 1, characterized in that, The power unit is an engine or an electric motor.

4. A control method for a dust collector intelligent control system based on any one of claims 1-3, characterized in that, include: Obtain data on dust emissions, dust collector motor speed, and power unit operating speed at the construction site; Based on the dust data from the construction site, the following processing steps will be taken: When the dust emission data at the construction site is less than or equal to the set value, the dust collector motor maintains its current speed. When the dust emission data at the construction site is greater than the set value, the speed of the dust collector motor is adjusted so that the dust emission data is less than or equal to the set value, and then the dust collector motor maintains its operation at the adjusted speed.

5. The control method according to claim 4, characterized in that, The adjustment of the speed of the dust collector motor includes: When the dust collector is working, the speed of the dust collector motor is adjusted by a dust collector motor control valve and a controller. The dust collector motor control valve includes: an electro-proportional speed control valve, a check valve, an overflow valve, a brake valve, and a throttle valve. The controller receives dust data from the construction site, dust collector motor speed data, and power unit operating speed data, processes the received data, and outputs a control signal to the electro-proportional speed control valve when the dust data at the construction site exceeds the set value. By controlling the opening state of the electro-proportional speed control valve through the control signal, a portion of the hydraulic oil is delivered to the dust collector motor through the outlet A of the dust collector motor control valve, and then flows back to the hydraulic oil tank through the opened brake valve; the other portion of the hydraulic oil flows directly back to the hydraulic oil tank through the electro-proportional speed control valve, thus completing the speed regulation of the dust collector motor.

6. The control method according to claim 5, characterized in that, Also includes: During the process of the dust collector stopping, when the dust collector motor is about to complete braking, oil is added to the dust collector motor through a one-way valve so that the dust collector motor can brake quickly.

7. The control method according to claim 5, characterized in that, When the dust emission data at the construction site exceeds a set value, the speed of the dust collector motor is adjusted to make the dust emission data less than or equal to the set value, including: When the dust data at the construction site exceeds the set value, the speed of the dust collector motor is adjusted. If the dust data collected after adjustment still exceeds the set value, the speed of the dust collector motor is adjusted again until the dust data is less than or equal to the set value.

8. A down-the-hole drill, characterized in that, The intelligent control system for dust collectors as described in any one of claims 1-3.

9. A computer-readable storage medium for storing one or more programs, characterized in that, The one or more programs include instructions that, when executed by a computing device, cause the computing device to perform any of the methods according to claims 4 to 7.

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