Brake linkage spraying system of drum brake and mining dump truck

Abstract

The utility model discloses a brake linkage spraying system of a drum brake and a mining dump truck. The brake linkage spraying system comprises an air supply system, a water supply system and a brake pedal linkage system, the gas supply system is used for outputting compressed gas; the water supply system is communicated with the air supply source system on one hand and is communicated with the axle spray head on the other hand, and the water supply system is controlled to drain water to the axle spray head through compressed air input by the air supply source system to the water supply system; the brake pedal linkage system is connected between the air supply source system and the water supply system in series, and the air inflow of the air supply source system to the water supply system is controlled by treading a brake pedal, so that the water spraying amount of the axle nozzle is adjusted. According to the technical scheme, on one hand, installation of a manual valve in a cab is avoided, and attractiveness is improved; on the other hand, manual operation is not needed, and the driving safety is improved; the water spraying amount is related to the brake pedal, water consumption is reduced, and the water supplementing period is prolonged.

Description

Technical Field

[0001] The utility model relates to a drum brake linkage spraying system, belonging to the technical field of mine car brakes. Background Art

[0002] The temperature of drum brakes tends to rise when used for a long time, and the braking performance drops sharply with the increase in temperature. Therefore, it is necessary to reduce the temperature of drum brakes by spraying water to ensure continuous and reliable braking force. The existing spray systems are mainly divided into two categories. One is that the spray system will always work as long as there is water in the water tank regardless of whether the vehicle's braking system is working. The other is that a manual valve is installed in the cab, and the driver controls the spray system by manual switch. Both of the above solutions have problems such as water waste, short water replenishment cycle, poor automation, poor cooling effect, and poor driving safety. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a brake linkage spraying system for a drum brake, that is, within a certain range, the deeper the driver steps on the brake pedal, the greater the amount of water sprayed.

[0004] The utility model is implemented according to the following technical solutions:

[0005] In a first aspect, the utility model provides a drum brake linkage spray system, comprising:

[0006] A gas supply source system for outputting compressed gas;

[0007] The water supply system is connected to the air supply source system on the one hand, and is connected to the axle nozzle on the other hand, and the compressed gas input to the water supply system by the air supply source system controls the water supply system to discharge water to the axle nozzle;

[0008] The brake pedal linkage system is connected in series between the air supply source system and the water supply system. By stepping on the brake pedal, the air intake of the air supply source system to the water supply system is controlled, thereby adjusting the water spraying amount of the axle nozzle.

[0009] In some embodiments, the air supply source system is composed of compressed gas generated by an engine, which enters the water supply system through a pipeline.

[0010] In some embodiments, a relief valve is connected in series to the pipeline at the air outlet of the air supply source system. When the pressure of the compressed air exceeds the set value of the relief valve, the compressed air is directly discharged from the pipeline.

[0011] In some embodiments, the brake pedal linkage system includes:

[0012] Brake pedal;

[0013] A control system, an input end of which is connected to the brake pedal;

[0014] The electromagnetic pneumatic valve is connected to the output end of the control system. The control system receives the brake signal from the brake pedal and outputs the control signal of the electromagnetic pneumatic valve after processing, thereby controlling the air intake of the air supply source system into the water supply system.

[0015] In some embodiments, the control system includes:

[0016] A distance sensor, used to detect the depression depth of the brake pedal;

[0017] The controller is connected to the distance sensor and is used to receive the input signal of the distance sensor and output a control signal of the electromagnetic pneumatic valve after processing. When the brake pedal is stepped deeper, the controller controls the electromagnetic pneumatic valve to open more.

[0018] In some embodiments, the control system includes:

[0019] a timing sensor to monitor how long the brake pedal is depressed;

[0020] The controller is connected to the timing sensor and is used to receive the input signal of the timing sensor and output the control signal of the electromagnetic pneumatic valve after processing. The longer the brake pedal is pressed, the larger the opening of the electromagnetic pneumatic valve controlled by the controller.

[0021] In some embodiments, the water supply system includes a water storage tank, and the water storage tank is provided with:

[0022] At least one air supply hole, connected to the air supply source system through a pipeline;

[0023] At least one water outlet hole, connected to the axle nozzle through a pipeline;

[0024] At least one water supply hole is used to supply water from an external source into the box.

[0025] In some embodiments, a filter is serially connected in the pipeline between the water supply system and the axle nozzle to filter the water entering the axle nozzle.

[0026] In some embodiments, a pressure regulating valve is serially connected in the pipeline at the water inlet end of the water supply system to adjust the pressure of gas entering the water supply system, thereby indirectly adjusting the water spray volume of the axle nozzle.

[0027] In a second aspect, the utility model provides a mining dump truck equipped with the above-mentioned drum brake linkage spray system.

[0028] Compared with the prior art, the utility model has the following beneficial effects:

[0029] 1. Avoid installing manual valves in the cab to improve aesthetics.

[0030] 2. No manual operation is required, which improves driving safety.

[0031] 3. The amount of water sprayed is related to the brake pedal, which reduces water consumption and extends the water replenishment cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0033] In the attached picture:

[0034] Figure 1 The utility model is a schematic diagram of a drum brake linkage spray system.

[0035] Figure symbols: 10 - air supply source system, 20 - overflow valve, 30 - brake pedal linkage system, 40 - pressure regulating valve, 50 - water supply system, 60 - filter, 70 - axle nozzle.

[0036] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0038] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] like Figure 1 As shown, a drum brake linkage spray system includes an air supply source system 10, a water supply system 50 and a brake pedal linkage system 30; the air supply source system 10 is used to output compressed gas; the water supply system 50 is connected to the air supply source system on the one hand, and is connected to the axle nozzle 70 on the other hand, and the compressed gas input to the water supply system 50 by the air supply source system 10 is used to control the water supply system 50 to drain water to the axle nozzle 70; the brake pedal linkage system 30 is connected in series between the air supply source system 10 and the water supply system 50, and the air intake of the air supply source system 10 to the water supply system 50 is controlled by stepping on the brake pedal, thereby adjusting the water spraying amount of the axle nozzle 70.

[0041] The above-mentioned gas supply source system is further described below.

[0042] Continue to refer to Figure 1 As shown, the air supply source system 10 is composed of compressed gas generated by the engine, which enters the water supply system 50 through a pipeline.

[0043] For further solutions, please refer to Figure 1 As shown, a relief valve 20 is connected in series to the pipeline at the air outlet of the air supply source system 10. When the pressure of the compressed air exceeds the set value of the relief valve 20, the compressed air is directly discharged from the pipeline.

[0044] The above-mentioned brake pedal linkage system is further explained below.

[0045] Continue to refer to Figure 1 As shown, the brake pedal linkage system 30 includes a brake pedal, a control system and an electromagnetic pneumatic valve; the input end of the control system is connected to the brake pedal; the electromagnetic pneumatic valve is connected to the output end of the control system, and the control system receives the brake signal of the brake pedal and outputs the control signal of the electromagnetic pneumatic valve after processing, thereby controlling the air intake of the air supply source system 10 entering the water supply system 50.

[0046] The above control system is further described below.

[0047] Embodiment 1: The control system includes a distance sensor and a controller; the distance sensor is used to detect the depression depth of the brake pedal; the controller is connected to the distance sensor, and is used to receive the input signal of the distance sensor and output the control signal of the electromagnetic pneumatic valve after processing. The deeper the brake pedal is depressed, the greater the opening of the electromagnetic pneumatic valve controlled by the controller.

[0048] Embodiment 2: The control system includes a timing sensor and a controller; the timing sensor is used to monitor the time when the brake pedal is depressed; the controller is connected to the timing sensor, and is used to receive the input signal of the timing sensor and output the control signal of the electromagnetic pneumatic valve after processing. The longer the brake pedal is depressed, the greater the opening of the electromagnetic pneumatic valve controlled by the controller.

[0049] The above-mentioned water supply system is further described below.

[0050] Continue to refer to Figure 1 As shown, the water supply system 50 includes a water tank, which is provided with at least one air filling hole, at least one water outlet hole and at least one water replenishment hole; the air filling hole is connected to the air supply source system 10 through a pipeline; the water outlet hole is connected to the axle nozzle 70 through a pipeline; the water replenishment hole is used to replenish external water source into the tank.

[0051] For further solutions, please refer to Figure 1 As shown, a filter 60 is serially connected in the pipeline between the water supply system 50 and the axle nozzle 70 for filtering the water entering the axle nozzle 70 .

[0052] For further solutions, please refer to Figure 1 As shown, a pressure regulating valve 40 is serially connected in the pipeline at the water inlet end of the water supply system 50 , which is used to adjust the pressure of the gas entering the water supply system 50 , thereby indirectly adjusting the water spraying amount of the axle nozzle 70 .

[0053] Working process: Figure 1As shown, the compressed gas generated by the engine enters the overflow valve 20 through the pipeline (the function of the overflow valve is to protect the water supply system 50. When the pressure of the compressed air exceeds the set value of the overflow valve 20, the compressed air is directly discharged from the pipeline), and the appropriate pressure air passes through the overflow valve 20 and enters the electromagnetic pneumatic valve (which is in a normally closed state when not in operation). When the brake pedal is stepped on, the brake pedal will input a signal to the controller, and the signal will be different when the brake pedal is stepped on to different depths. The controller receives the signal from the brake pedal and outputs a control signal for the electromagnetic pneumatic valve after analysis and processing, thereby achieving the goal that the deeper the brake pedal is stepped on within a certain range, the larger the opening of the electromagnetic pneumatic valve will be. The compressed air discharged through the electromagnetic pneumatic valve enters the pressure regulating valve 40 (the gas pressure entering the water tank can be adjusted as needed to indirectly adjust the water spraying amount of the axle nozzle 70), adjusts the compressed air pressure, and the compressed air enters the water storage tank. Under the action of compressed air and gravity, the water in the water storage tank is discharged from the water outlet, and the discharged water enters the filter 60 (to filter foreign matter in the water and prevent clogging of the nozzle), and the water discharged from the filter 60 enters the nozzle in the middle and rear axles to achieve cooling of the drum brakes.

[0054] The utility model also provides a mining dump truck, which is equipped with the above-mentioned drum brake linkage spraying system.

[0055] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0056] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.

[0057] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A drum brake linkage spray system, characterized in that: include: A gas supply source system for outputting compressed gas; The water supply system is connected to the air supply source system on the one hand, and is connected to the axle nozzle on the other hand, and the compressed gas input to the water supply system by the air supply source system controls the water supply system to discharge water to the axle nozzle; The brake pedal linkage system is connected in series between the air supply source system and the water supply system. By stepping on the brake pedal, the air intake of the air supply source system to the water supply system is controlled, thereby adjusting the water spraying amount of the axle nozzle.

2. A drum brake linkage spray system according to claim 1, characterized in that: The air supply source system is composed of compressed gas generated by the engine and enters the water supply system through a pipeline.

3. A drum brake linkage spray system according to claim 2, characterized in that: An overflow valve is serially connected to the pipeline at the air outlet end of the air supply source system. When the pressure of the compressed air exceeds the set value of the overflow valve, the compressed air is directly discharged from the pipeline.

4. A drum brake linkage spray system according to claim 1, characterized in that: The brake pedal linkage system comprises: Brake pedal; A control system, an input end of which is connected to the brake pedal; The electromagnetic pneumatic valve is connected to the output end of the control system. The control system receives the brake signal from the brake pedal and outputs the control signal of the electromagnetic pneumatic valve after processing, thereby controlling the air intake of the air supply source system into the water supply system.

5. A drum brake linkage spray system according to claim 4, characterized in that: The control system comprises: A distance sensor, used to detect the depression depth of the brake pedal; The controller is connected to the distance sensor and is used to receive the input signal of the distance sensor and output a control signal of the electromagnetic pneumatic valve after processing. When the brake pedal is stepped deeper, the controller controls the electromagnetic pneumatic valve to open more.

6. A drum brake linkage spray system according to claim 4, characterized in that: The control system comprises: a timing sensor to monitor how long the brake pedal is depressed; The controller is connected to the timing sensor and is used to receive the input signal of the timing sensor and output the control signal of the electromagnetic pneumatic valve after processing. The longer the brake pedal is pressed, the larger the opening of the electromagnetic pneumatic valve controlled by the controller.

7. The drum brake linkage spray system according to claim 1, characterized in that: The water supply system comprises a water storage tank, and the water storage tank is provided with: At least one air supply hole, connected to the air supply source system through a pipeline; At least one water outlet hole, connected to the axle nozzle through a pipeline; At least one water supply hole is used to supply water from an external source into the box.

8. The drum brake linkage spray system according to claim 1, characterized in that: A filter is serially connected in the pipeline between the water supply system and the axle nozzle, which is used to filter the water entering the axle nozzle.

9. The drum brake linkage spray system according to claim 1, characterized in that: A pressure regulating valve is serially connected in the pipeline at the water inlet end of the water supply system to adjust the pressure of the gas entering the water supply system, thereby indirectly adjusting the water spray volume of the axle nozzle.

10. A mining dump truck, characterized in that: A drum brake linkage spray system according to any one of claims 1 to 9 is installed.

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