Off-road dumper drive-by-wire brake spraying system and off-road dumper

Abstract

The utility model discloses an off-highway dumper drive-by-wire brake spraying system and an off-highway dumper, and the off-highway dumper drive-by-wire brake spraying system comprises a gas path consisting of a gas tank, a one-way valve, a pressure reducing valve, a first electric ball valve and a water spraying tank which are connected in sequence, the water path consists of the water spraying tank, a filter, a second electric ball valve, an electromagnetic valve and a high-precision nozzle which are connected in sequence; the system further comprises an integrated electronic control unit, a controller local area network bus and a temperature sensor; the temperature sensor is in communication connection with the integrated electronic control unit through the controller local area network bus. The integrated electronic control unit is in communication connection with the first electric ball valve, the second electric ball valve and the electromagnetic valve. The high-precision nozzle and the temperature sensor are arranged at the positions right opposite to the friction face of the brake drum. The temperature of the brake drum is obtained in real time, the spraying water amount and the spraying time of the nozzle are controlled, the spraying opportunity is more accurate, and the water spraying amount meets the actual requirement.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile brake cooling system, more specifically, the utility model relates to a non -highway dump truck line -controlled brake spraying system and non -highway dump truck. BACKGROUND

[0002] The non-highway dump truck is the key equipment in the open -pit coal mine, cement building material, sand aggregate, metal and nonmetal mine and water conservancy and hydropower and large -scale engineering exploitation and construction, and has the working characteristics of loading and unloading much, bearing heavy, short haul, long continuous working time. The non-highway dump truck travels on the road that is winding and has some slope, and the road condition is worse than that of the highway dump truck, so the brake is frequently used during the vehicle transportation and travel, and therefore the service life of the brake drum is particularly important. The brake drum of the non-highway dump truck often appears high-temperature wear phenomenon during long-term use, which is a major quality and safety problem, and therefore the protection of the brake drum is very important for the service life of the dump truck.

[0003] At present, the non-highway dump truck brake water spraying device is mainly manually operated by the driver, and the driver needs to determine when to spray the brake drum and the spraying time according to the driving experience. SUMMARY

[0004] The utility model discloses a kind of non-highway dump truck line-controlled brake spraying system and non-highway dump truck, to solve the problems of existing technology, such as not timely spraying operation, poor cooling effect and water resource waste.

[0005] In order to achieve these purposes and other advantages according to the utility model, a non-highway dump truck line-controlled brake spraying system is provided, which includes a gas circuit composed of a gas tank, a one-way valve, a pressure reducing valve, a first electric ball valve and a water spraying tank connected in sequence, a water circuit composed of the water spraying tank, a filter, a second electric ball valve, a solenoid valve and a high-precision nozzle connected in sequence, and further includes an integrated electronic control unit, a controller area network bus and a temperature sensor.

[0006] The temperature sensor is communicatively connected to the integrated electronic control unit through the controller area network bus, and the integrated electronic control unit is communicatively connected to the first electric ball valve, the second electric ball valve and the solenoid valve respectively.

[0007] The high-precision nozzle and the temperature sensor are arranged at positions directly opposite the friction surface of the brake drum.

[0008] Preferably, a liquid level sensor is installed in the water spraying tank, and the liquid level sensor is in communication with the integrated electronic control unit through the CAN bus, and the integrated electronic control unit is in communication with the indicator light.

[0009] Preferably, the indicator light comprises at least a red indicator light, a yellow indicator light and a green indicator light, and the integrated electronic control unit is in communication with the red indicator light, the yellow indicator light and the green indicator light respectively.

[0010] Preferably, the water spraying tank is provided with a water inlet, a water overflow outlet and a pressure relief valve.

[0011] Preferably, the water spraying tank is further provided with a water outlet, and a tee joint is arranged at the water outlet, and the first electric ball valve and the filter are connected to different ports of the tee joint respectively.

[0012] Preferably, the pipeline downstream of the second electric ball valve is provided with six branches, and an electromagnetic valve and a high-precision nozzle are sequentially connected to each branch, and the six high-precision nozzles are arranged at the left front axle, the right front axle, the left middle axle, the right middle axle, the left rear axle and the right rear axle respectively.

[0013] Preferably, the temperature sensor is also provided with six temperature sensors, and the six temperature sensors are arranged at the left front axle, the right front axle, the left middle axle, the right middle axle, the left rear axle and the right rear axle respectively.

[0014] Preferably, the high-precision nozzle is an adjustable-angle nozzle.

[0015] The utility model also provides a non -highway dump truck, non -highway dump truck is provided with above -mentioned non -highway dump truck line control brake spray system.

[0016] The utility model has at least the following beneficial effects: by real -time acquisition brake drum's temperature, control nozzle's spray water quantity and spray time, make the spray timing more accurate, and the water quantity meets the actual demand, thereby solve the existing non -highway dump truck, and the problem that spray is not in time, and spray effect is poor and waste water resource.

[0017] Other advantages, objects and features of the utility model will be partly embodied through the following description, and some will be understood by the skilled in the art through the research and practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1This is a schematic diagram of the air and water circuit connection structure of the off-highway dump truck drive-controlled brake spray system according to an embodiment of the present invention;

[0019] Figure 2 This is a flowchart of the spray control process of the off-highway dump truck wire-controlled brake spray system described in this embodiment of the utility model.

[0020] In the diagram: 1-Gas tank, 2-One-way valve, 3-Pressure reducing valve, 4-First electric ball valve, 5-Water tank, 6-Level sensor, 7-Filter, 8-Second electric ball valve, 9-Solenoid valve, 10-High-precision nozzle. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0022] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this utility model, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] like Figure 1 As shown, this utility model provides a non-highway dump truck wire-controlled brake spray system, including an air circuit consisting of an air tank 1, a one-way valve 2, a pressure reducing valve 3, a first electric ball valve 4, and a water tank 5 connected in sequence, and a water circuit consisting of the water tank 5, a filter 7, a second electric ball valve 8, a solenoid valve 9, and a high-precision nozzle 10 connected in sequence. It also includes an integrated electronic control unit (ECU), a controller area network bus (CAN), and a temperature sensor.

[0024] The temperature sensor is communicatively connected to the integrated electronic control unit via the controller local area network bus, and the integrated electronic control unit is communicatively connected to the first electric ball valve 4, the second electric ball valve 8, and the solenoid valve 9, respectively.

[0025] The high-precision nozzle 10 and the temperature sensor are positioned directly opposite the friction surface of the brake drum.

[0026] The one-way valve 2 is used to prevent water in the water tank 5 from flowing back into the gas tank 1, the pressure reducing valve 3 is used to ensure pressure balance in the gas circuit, and the first electric ball valve 4 is used to control the opening and closing of the gas circuit.

[0027] The filter 7 is used to filter impurities in the water to prevent impurities from clogging the nozzles. The second electric ball valve 8 is used to control the opening and closing of the entire water circuit. The solenoid valve 9 is used to control the opening and closing of the high-precision nozzle 10.

[0028] The temperature sensor is used to acquire the temperature signal of the brake drum, and the controller local area network bus is used to transmit the temperature signal to the integrated electronic control unit. The integrated electronic control unit, based on the acquired temperature signal, outputs action signals for the first electric ball valve 4, the second electric ball valve 8, and the solenoid valve 9, respectively. High-pressure gas in the gas tank 1 is pressurized into the water spray tank 5, and then water in the water spray tank 5 is sprayed out from nozzles through pipes, thereby achieving a cooling effect. This process, applied during heavy-load, long-distance downhill driving, solves the problem of reduced braking force caused by high brake drum temperature due to frequent braking, ensuring vehicle safety.

[0029] For example: Figure 2 As shown, after the ECU acquires the temperature signal, it determines whether the brake drum temperature is less than 120℃. If it is, the ECU repeatedly acquires the temperature signal. If not, the ECU sends a command to sequentially open the first electric ball valve 4, the second electric ball valve 8, and the solenoid valve 9, causing the high-precision nozzle 10 to spray for 5 seconds to cool the brake drum. The ECU acquires the temperature signal again and determines whether the brake drum temperature is less than 120℃. If it is, the ECU closes the solenoid valve 9 to stop spraying. If not, the ECU continues to open the solenoid valve 9, causing the high-precision nozzle 10 to continue spraying for 5 seconds, and repeats the process of acquiring the temperature signal and determining the temperature.

[0030] The above embodiments obtain the temperature of the brake drum in real time and control the spray volume and spray time of the nozzle, so that the spray timing is more accurate and the spray volume meets the actual needs, thereby solving the problems of untimely spraying, poor spraying effect and waste of water resources existing in existing off-highway dump trucks.

[0031] Furthermore, the off-highway dump truck drive-controlled brake spray system also includes a liquid level sensor 6 and an indicator light. The liquid level sensor 6 is installed in the spray tank 5 and is communicatively connected to the integrated electronic control unit via the controller local area network bus. The integrated electronic control unit is communicatively connected to the indicator light.

[0032] The liquid level sensor 6 is used to acquire the liquid level signal in the water tank 5. The controller local area network bus is also used to transmit the liquid level signal to the integrated electronic control unit. The integrated electronic control unit is also used to output the control signal of the indicator light according to the acquired liquid level signal.

[0033] Furthermore, the indicator lights include at least a red indicator light, a yellow indicator light, and a green indicator light, and the integrated electronic control unit is communicatively connected to the red indicator light, the yellow indicator light, and the green indicator light, respectively.

[0034] The integrated electronic control unit can control the indicator lights of different colors to illuminate based on different water level signals. For example, the green light illuminates when the water level in the tank is ≥80%, the yellow light illuminates when the water level is <80% but ≥30%, and the red light illuminates when the water level is <30%.

[0035] The above embodiments provide a clear indication to drivers or maintenance personnel to replenish water in a timely manner, ensuring that the spray system always has sufficient water to effectively cool the brake drums and avoid overheating of the brake drums or spray failure due to insufficient water.

[0036] Furthermore, the water tank 5 is equipped with a water inlet, an overflow outlet, and a pressure relief valve.

[0037] The inlet is used to inject water into the water tank 5, the overflow outlet is used to overflow when the water entering the water tank 5 through the inlet exceeds the limit, and the pressure relief valve is used to ensure pressure balance in the water tank 5.

[0038] The above embodiments prevent structural damage or pipeline leakage to the water tank due to overpressure or overflow by setting an overflow outlet. Real-time pressure regulation of the water tank's internal pressure prevents pressure anomalies caused by air pressure fluctuations or water temperature changes, ensuring the safety of the water tank and connecting pipelines. The overflow outlet and pressure relief valve work together to maintain pressure balance within the water tank, ensuring a stable water flow to the spray pipeline and preventing uneven or interrupted spraying due to sudden pressure changes. The passive protection mechanism of the overflow outlet and pressure relief valve reduces the risk of failure due to operational errors (such as overfilling) or environmental factors (such as high-temperature expansion), lowering maintenance frequency.

[0039] Furthermore, the water tank 5 is also provided with a water outlet, and a three-way connector is provided at the water outlet. The first electric ball valve 4 and the filter 7 are respectively connected to different ports of the three-way connector.

[0040] The above embodiment uses a T-joint to achieve the diversion function of the water outlet of the water tank 5, allowing the water path (spray system) and the air path (air pressure control) to share the same outlet while maintaining independent control of the two paths, thus optimizing the system structure. The T-joint replaces the traditional multi-branch pipes, reducing the number of welding or connection points and lowering the complexity of the piping. The first electric ball valve 4 (air path control) and the filter 7 (water path filtration) are directly integrated into the outlet, saving space and improving the system's compactness, making it particularly suitable for scenarios where the chassis space of off-highway dump trucks is limited.

[0041] Furthermore, the pipeline downstream of the second electric ball valve 8 is provided with six branches, each of which is connected in sequence to a solenoid valve 9 and a high-precision nozzle 10. The six high-precision nozzles 10 are respectively located on the left front axle, right front axle, left middle axle, right middle axle, left rear axle, and right rear axle.

[0042] Six temperature sensors are also provided, and the six temperature sensors are respectively located on the left front axle, right front axle, left middle axle, right middle axle, left rear axle, and right rear axle.

[0043] In the above embodiment, the six branches correspond to six key wheel positions, such as the left front axle and right front axle. Each branch is equipped with an independent solenoid valve 9 and a high-precision nozzle 10. Combined with the temperature sensor at the corresponding position, independent monitoring and spray control of the temperature of each brake drum are achieved. For example, when the temperature of the left front axle brake drum is too high, only the solenoid valve 9 and nozzle of the left front axle branch are triggered to spray, avoiding ineffective spraying of other brake drums that are not overheated, significantly reducing water waste. On off-highway dump trucks, the braking frequency and load of different wheels vary greatly under rough road conditions (e.g., the rear axle load is higher when driving on slopes). Branch control can dynamically adjust the spray strategy according to the actual temperature of each wheel. The solenoid valve 9 of each branch is independently controlled, so even if one branch fails (e.g., the nozzle is blocked), the other branches can still operate normally, ensuring the redundancy and safety of the overall spray system. The multi-point layout of temperature sensors can avoid global misjudgment due to the failure of a single sensor, improving the accuracy of data acquisition. Automated branch control requires no manual intervention, which is especially suitable for autonomous driving scenarios. The ECU autonomously makes decisions on the spraying logic based on real-time temperature data to ensure the stability and safety of the braking system under complex road conditions.

[0044] Furthermore, the high-precision nozzle 10 is a nozzle with an adjustable spray angle.

[0045] In the above embodiments, the high-precision nozzle 10 is designed with an adjustable spray angle. By flexibly adjusting the spray direction and coverage area, the water flow landing point can be optimized according to the actual shape and position of the brake drum friction surface, ensuring that the spray water accurately covers the high-temperature area, avoiding insufficient local cooling or water waste caused by spray angle deviation, and significantly improving the adaptability and efficiency of the off-highway dump truck drive-controlled brake spray system.

[0046] This utility model also provides an off-highway dump truck, which is equipped with the aforementioned off-highway dump truck drive-controlled brake spray system. Therefore, the off-highway mining dump truck has the same advantages as the off-highway dump truck drive-controlled brake spray system described in the above embodiments.

[0047] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A drive-by-wire brake spray system for off-highway dump trucks, characterized in that, It includes an air circuit consisting of an air tank, a one-way valve, a pressure reducing valve, a first electric ball valve, and a water spray tank connected in sequence; a water circuit consisting of the water spray tank, a filter, a second electric ball valve, a solenoid valve, and a high-precision nozzle connected in sequence; and also includes an integrated electronic control unit, a controller local area network bus, and a temperature sensor. The temperature sensor is communicatively connected to the integrated electronic control unit via the controller local area network bus, and the integrated electronic control unit is communicatively connected to the first electric ball valve, the second electric ball valve, and the solenoid valve, respectively. The high-precision nozzle and the temperature sensor are positioned directly opposite the friction surface of the brake drum.

2. The off-highway dump truck drive-controlled brake spray system as described in claim 1, characterized in that, It also includes a liquid level sensor and an indicator light. The liquid level sensor is installed in the water tank and is connected to the integrated electronic control unit via the controller local area network bus. The integrated electronic control unit is connected to the indicator light.

3. The off-highway dump truck drive-controlled brake spray system as described in claim 2, characterized in that, The indicator lights include at least a red indicator light, a yellow indicator light, and a green indicator light, and the integrated electronic control unit is communicatively connected to the red indicator light, the yellow indicator light, and the green indicator light, respectively.

4. The off-highway dump truck drive-controlled brake spray system as described in claim 1, characterized in that, The water tank is equipped with an inlet, an overflow outlet, and a pressure relief valve.

5. The off-highway dump truck drive-controlled brake spray system as described in claim 4, characterized in that, The water tank is also provided with a water outlet, and a three-way connector is provided at the water outlet. The first electric ball valve and the filter are respectively connected to different ports of the three-way connector.

6. The off-highway dump truck drive-controlled brake spray system as described in claim 1, characterized in that, The pipeline downstream of the second electric ball valve is provided with six branches, each of which is connected in sequence to a solenoid valve and a high-precision nozzle. The six high-precision nozzles are respectively located on the left front axle, right front axle, left middle axle, right middle axle, left rear axle, and right rear axle. Six temperature sensors are also provided, and the six temperature sensors are respectively located on the left front axle, right front axle, left middle axle, right middle axle, left rear axle, and right rear axle.

7. The off-highway dump truck drive-controlled brake spray system as described in claim 1, characterized in that, The high-precision nozzle is a nozzle with an adjustable spray angle.

8. An off-highway dump truck, characterized in that, The off-highway dump truck is equipped with an off-highway dump truck drive-controlled brake spray system as described in any one of claims 1 to 7.

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