Water pump driving system and water pump driving method for electric transmission mine watering cart

Abstract

The invention discloses a water pump driving system of an electric transmission mine sprinkler. A whole vehicle high-voltage power supply is connected with a power supply input end of a controller through a cable and is used for outputting a high-voltage alternating current power supply; the controller is connected with the motor through a cable and used for driving the motor to operate and controlling the rotating speed of the motor. A rotating shaft of the motor is connected with a rotating shaft of the water pump through a transmission shaft; the water pump is connected with the nozzle and the water tank through pipelines and used for conveying water in the water tank to the nozzle; the nozzle is used for spraying water to a road surface; the water tank is used for storing water. The invention further discloses a driving method of the water pump of the electric transmission mine watering cart. The water pump rotating speed is stable and controllable, water pump work is prevented from being affected by engine rotating speed changes, the efficiency of the watering cart is improved, and meanwhile the dust environment is effectively improved.

Description

Technical Field

[0001] The invention belongs to the field of electric drive mining sprinkler trucks, and in particular relates to a water pump driving system and a water pump driving method for an electric drive mining sprinkler truck. Background Art

[0002] Electric drive mining sprinkler truck is a non-road sprinkler truck, mainly used for sprinkling water to reduce dust, fire fighting, etc. in large open-pit mines. Electric drive mining sprinkler truck is mainly composed of frame, engine, generator, wheel motor, cab assembly, water tank, water system, etc., among which the water system is an important component of electric wheel mining sprinkler truck.

[0003] At present, the water system of electric transmission mining sprinkler trucks is generally composed of hydraulic pumps, hydraulic motors, water pumps, pipelines, nozzles, etc. The hydraulic motor provides power for the water pump under the drive of the hydraulic pump. The water pump draws water from the water tank and sprinkles water through the nozzle. Since the power of the hydraulic pump comes from the engine, the engine speed is related to the speed of the hydraulic pump and the throttle. Therefore, the change of the engine speed will directly cause the speed of the hydraulic pump, hydraulic motor and water pump, thereby affecting the watering effect. The mine road is rugged and there are often continuous downhill road conditions. When the sprinkler truck goes downhill continuously, the engine speed is low, the watering effect is poor, and it cannot play a good dust reduction role. Summary of the invention

[0004] The purpose of the present invention is to provide an electric transmission mining sprinkler water pump driving system and a water pump driving method, so as to achieve stable and controllable water pump speed, avoid the influence of engine speed change on water pump operation, improve the efficiency of the sprinkler truck, and effectively improve the dust environment.

[0005] To achieve the above purpose, the technical solution used in the present invention is:

[0006] Electric transmission mining sprinkler water pump drive system, including:

[0007] The vehicle high-voltage power supply is connected to the power input terminal of the controller through a cable and is used to output high-voltage AC power;

[0008] A controller is connected to the motor through a cable and is used to drive the motor and control the motor speed;

[0009] The motor is used to drive the water pump to rotate, and the rotating shaft of the motor is connected to the rotating shaft of the water pump through a transmission shaft;

[0010] A water pump is connected to the nozzle and the water tank through pipelines, and is used to transport water in the water tank to the nozzle;

[0011] sprinkler heads, used to spray water onto the road surface;

[0012] Water tank, used to store water.

[0013] Furthermore, the high-voltage power supply, controller, motor, water pump and water tank of the whole vehicle are fixed on the chassis of the electric transmission mine car.

[0014] Furthermore, the vehicle cab is provided with an operation screen, and the signal transmission port of the controller is connected to the operation screen via a signal line.

[0015] Furthermore, the water pump adopts a centrifugal water pump, and water is pressed into the pipeline through a high-speed rotating impeller, providing a stable power source for the pipeline; the controller transforms and rectifies the high-voltage AC power, outputs AC power of a set frequency, and powers the motor.

[0016] Furthermore, the controller uses a motor control unit to control the speed of the motor.

[0017] The electric transmission mining sprinkler water pump driving method includes:

[0018] The vehicle's high-voltage power supply outputs high-voltage AC power, and the controller transforms and rectifies the high-voltage AC power and outputs it to the motor for power supply;

[0019] The water pump generates water pressure under the drive of the motor, and the water in the water tank is pressurized by the water pump and then sprayed through the nozzle.

[0020] Preferably, the motor speed is adjusted through human-computer interaction on the operating screen, and at the same time, the operating screen displays the motor speed and water pressure parameters.

[0021] The technical effects of the present invention include:

[0022] 1. The present invention changes the power source of the water pump and adopts the form of a motor driving the water pump to provide a stable speed for the water pump, thereby ensuring the stable speed of the water pump and the stable water pressure, so that the spraying of the water truck during the watering process is more stable and the dust reduction efficiency is higher.

[0023] It avoids the problem of unstable water pressure caused by the water pump of traditional sprinkler trucks being affected by the engine speed, can effectively solve the problem of low spraying efficiency, improves the sprinkler efficiency, and effectively improves the dust environment.

[0024] 2. The present invention only needs to add a motor controller and a motor to replace the original hydraulic pump, hydraulic motor, etc., which simplifies the existing control method, pipelines, etc. and is simple and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural principle diagram of the electric transmission mining sprinkler water pump driving system of the present invention. DETAILED DESCRIPTION

[0026] The following description sufficiently illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce the invention.

[0027] like Figure 1The figure shows the structural principle diagram of the electric transmission mining sprinkler water pump driving system of the present invention.

[0028] The water pump driving system of the electric transmission mining sprinkler truck includes: a vehicle high-voltage power supply 1, a controller 2, a motor 3, a water pump 4, a nozzle 5, and a water tank 6. The vehicle high-voltage power supply 1, the controller 2, the motor 3, the water pump 4, and the water tank 6 are fixed on the chassis of the electric transmission mining truck, and the water pump 4 is connected to the nozzle 5 and the water tank 6 through pipelines.

[0029] The vehicle high-voltage power supply 1 is connected to the power input terminal of the controller 2 through a cable and is used to output high-voltage AC power;

[0030] The controller 2 is connected to the motor 3 via a cable and is used to drive the motor 3 to run and control the speed of the motor 3;

[0031] The controller 2 transforms and rectifies the high voltage AC power, outputs AC power of a set frequency, and supplies power to the motor 3.

[0032] If the electric drive mining sprinkler truck adopts an electric car, the controller 2 adopts a motor control unit (MCU), which is located between the high-voltage power supply 1 of the whole vehicle and the motor 3 to control the rotation speed of the motor 3.

[0033] The controller 2 may also be a motor controller alone.

[0034] In this preferred embodiment, the signal transmission port of the controller 2 is connected to the operation screen 7 via a signal line.

[0035] The motor 3 is used to drive the water pump 4 to rotate, and the rotating shaft of the motor 4 is connected to the rotating shaft of the water pump 5 through a transmission shaft;

[0036] The water pump 4 is connected to the nozzle 5 and the water tank 6 through pipelines, and is used to transport water in the water tank 6 to the nozzle 5. The water pump 4 is a centrifugal water pump, and water is pressed into the pipeline through a high-speed rotating impeller, providing a stable power source for the pipeline;

[0037] The nozzle 5 is used to spray water onto the road surface; the nozzle 5 ensures that the high-pressure water forms a certain shape when spraying, thereby improving the spraying efficiency.

[0038] The water tank 6, as a water storage device, is used to store water.

[0039] Since the water pump 4 is driven by the motor 3 , the motor 3 can be set to a fixed speed through the operation panel 7 , so that the speed of the water pump 4 is stable and the water pressure is also stable.

[0040] The electric transmission mining sprinkler water pump driving method includes:

[0041] Step 1: The vehicle high-voltage power supply 1 outputs high-voltage AC power, and the controller 2 transforms and rectifies the high-voltage AC power and outputs it to the motor 3 for power supply;

[0042] Step 2: The water pump 4 generates water pressure under the drive of the motor 3 , and the water in the water tank 6 is pressurized by the water pump 4 and then sprayed through the nozzle 5 .

[0043] An operation screen 7 is provided in the vehicle cab, through which the driver can adjust the speed of the motor 3, conduct human-machine interaction, and control the speed of the motor 3. The operation screen 7 displays relevant parameters such as the motor speed and water pressure.

[0044] The terms used in the present invention are illustrative and exemplary, rather than restrictive. Since the present invention can be implemented in various forms without departing from the spirit or essence of the technical solution, it should be understood that the above embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. An electric transmission mining sprinkler water pump drive system, characterized in that: include: The vehicle high-voltage power supply is connected to the power input terminal of the controller through a cable and is used to output high-voltage AC power; A controller is connected to the motor through a cable and is used to drive the motor and control the motor speed; The motor is used to drive the water pump to rotate, and the rotating shaft of the motor is connected to the rotating shaft of the water pump through a transmission shaft; A water pump is connected to the nozzle and the water tank through pipelines, and is used to transport water in the water tank to the nozzle; sprinkler heads, used to spray water onto the road surface; Water tank, used to store water.

2. The electric drive mining sprinkler water pump drive system according to claim 1, characterized in that: The vehicle's high-voltage power supply, controller, motor, water pump and water tank are fixed on the chassis of the electric transmission mine car.

3. The electric drive mining sprinkler water pump drive system according to claim 1, characterized in that: An operation screen is provided in the vehicle cab, and a signal transmission port of the controller is connected to the operation screen via a signal line.

4. The electric drive mining sprinkler water pump drive system according to claim 1, characterized in that: The water pump uses a centrifugal water pump. Water is pressed into the pipeline through the high-speed rotating impeller, providing a stable power source for the pipeline; the controller transforms and rectifies the high-voltage AC power, outputs AC power of a set frequency, and powers the motor.

5. The electric drive mining sprinkler water pump drive system according to claim 1, characterized in that: The controller uses a motor control unit to control the speed of the motor.

6. A method for driving a water pump for an electric-driven mining sprinkler truck using the water pump driving system for an electric-driven mining sprinkler truck according to any one of claims 1 to 5, characterized in that: include: The vehicle's high-voltage power supply outputs high-voltage AC power, and the controller transforms and rectifies the high-voltage AC power and outputs it to the motor for power supply; The water pump generates water pressure under the drive of the motor, and the water in the water tank is pressurized by the water pump and then sprayed through the nozzle.

7. The method for driving a water pump of an electric transmission mining sprinkler truck as claimed in claim 6, characterized in that: The motor speed is adjusted through human-computer interaction on the operation screen. At the same time, the operation screen displays the motor speed and water pressure parameters.

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