Hydraulic system for multifunctional double-sweeping vehicle

Abstract

The utility model is suitable for the technical field of vehicle hydraulic equipment, and provides a multifunctional hydraulic system for a double-sweeping vehicle, which comprises an oil supply module, an oil return module, a hydraulic control valve group and a hydraulic execution module, the oil return module is connected with a main oil return pipeline and used for receiving hydraulic oil of the main oil return pipeline, the oil return module and the oil supply module form a hydraulic oil circulation loop, and the oil supply module supplies the hydraulic oil to the hydraulic execution module through the main oil supply pipeline under the control of the hydraulic control valve set. An oil inlet and an oil return port of the right sweeping motor are communicated through a pipeline and then are communicated with the second electromagnetic directional valve through a pipeline to form differential connection, so that the right sweeping motor can operate at a higher rotating speed compared with the left sweeping motor, and during sweeping operation, positions such as a road shoulder on the right side of a vehicle can be cleaned more thoroughly.

Description

Technical Field

[0001] The utility model is applicable to the technical field of vehicle hydraulic equipment and provides a multifunctional double-sweeping hydraulic system for washing vehicles. Background Art

[0002] A sweeper and washer is a common urban sanitation vehicle. It generally uses a rotating broom to sweep the ground to achieve the purpose of cleaning the road. Conventional rotary brooms are generally driven by electric motors or hydraulic motors. The use of hydraulic motors is lower in cost and can also share valve groups and power sources with the hydraulic system of the entire vehicle. However, during the sweeping and washing process of the sweeper and washer, the sweeping and washing requirements for the left and right sides of the vehicle are actually different. In my country, roads are usually driven on the right, so curbs, shoulders and other places that are easy to accommodate dirt are always on the right side of the sweeper and washer during operation. Therefore, the sweeping brush motor on the right side needs to run at a higher speed than the left side to achieve the same cleaning effect as the left side. Utility Model Content

[0003] To this end, the utility model provides a multifunctional hydraulic system for dual sweeping and washing vehicles. The oil inlet and oil return port of the right sweeping brush motor are connected through a pipeline and then connected to the second electromagnetic reversing valve through a pipeline. Through this connection method, a differential connection is formed with the right sweeping brush motor, so that the right sweeping brush motor can operate at a higher speed, thereby improving the sweeping efficiency of the right side of the sweeping and washing vehicle.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multifunctional double-sweeping car washing hydraulic system, comprising:

[0005] An oil supply module, the oil supply module is connected to the main oil supply pipeline and is used to supply hydraulic oil to the main oil supply pipeline. The oil supply module includes an oil supply tank and an oil pump that are connected in sequence;

[0006] An oil return module, the oil return module is connected to the main oil return pipeline, and is used to receive the hydraulic oil from the main oil return pipeline and form a hydraulic oil circulation loop with the oil supply module. The oil return module includes an oil return tank;

[0007] a hydraulic control valve group, the hydraulic control valve group including a first solenoid reversing valve, a second solenoid reversing valve, a third solenoid reversing valve, a fourth solenoid reversing valve, and a fifth solenoid reversing valve; the main oil supply pipeline is connected to the first solenoid reversing valve, the second solenoid reversing valve, the third solenoid reversing valve, the fourth solenoid reversing valve, and the fifth solenoid reversing valve respectively through pipelines; and the main oil return pipeline is connected to the first solenoid reversing valve, the second solenoid reversing valve, the third solenoid reversing valve, the fourth solenoid reversing valve, and the fifth solenoid reversing valve respectively through pipelines;

[0008] A hydraulic execution module includes a left sweeping brush motor, a left sweeping drive cylinder, a right sweeping brush motor, a right sweeping drive cylinder, and a bucket lifting drive cylinder. The first electromagnetic reversing valve is connected to the left sweeping brush motor through a pipeline to control the operation of the left sweeping brush motor. The second electromagnetic reversing valve is connected to the left sweeping drive cylinder through a pipeline to control the operation of the left sweeping drive cylinder. The third electromagnetic reversing valve is connected to the right sweeping drive cylinder through a pipeline to control the operation of the right sweeping drive cylinder. The second electromagnetic reversing valve and the fourth electromagnetic reversing valve are connected to the right sweeping brush motor through a pipeline to control the operation of the right sweeping brush motor. The oil inlet of the right sweeping brush motor and The return oil port is connected through a pipeline and then connected to the second solenoid reversing valve through a pipeline. The oil inlet of the right sweeping brush motor is connected to the second solenoid reversing valve through a pipeline after passing through the fourth solenoid reversing valve and the one-way valve. The return oil port of the right sweeping brush motor is also connected to the second solenoid reversing valve through a pipeline after passing through the one-way valve. The fifth solenoid reversing valve is connected to the bucket lifting drive cylinder through a pipeline for controlling the operation of the bucket lifting drive cylinder. The bucket lifting drive cylinder is also connected to a manual control pipeline. One end of the manual control pipeline is connected to the bucket lifting drive cylinder, and the other end is connected to the main oil return pipeline. The manual control pipeline is provided with a manual pump.

[0009] Furthermore, the oil supply tank is provided with a liquid level gauge and an air filter, an oil suction filter is provided between the oil supply tank and the oil pump, and a one-way valve is provided between the oil pump and the main oil supply pipeline.

[0010] Furthermore, a shock-resistant pressure gauge is provided on the main oil supply pipeline, and a pressure gauge switch is provided between the main oil supply pipeline and the shock-resistant pressure gauge.

[0011] Furthermore, an oil return filter is provided between the oil return tank and the main oil return pipeline.

[0012] Furthermore, a back pressure valve is provided on the pipeline between the fifth electromagnetic reversing valve and the bucket lifting and lowering drive cylinder.

[0013] Furthermore, the hydraulic control valve group also includes a sixth solenoid reversing valve and a seventh solenoid reversing valve, and the hydraulic execution module also includes a nozzle cylinder and a rear door cylinder. The sixth solenoid reversing valve is connected to the nozzle cylinder through a pipeline for controlling the operation of the nozzle cylinder, and the seventh solenoid reversing valve is connected to the rear door cylinder through a pipeline for controlling the operation of the rear door cylinder.

[0014] Furthermore, a hydraulically controlled single valve is provided between the first solenoid reversing valve and the left sweeping brush motor, a hydraulically controlled single valve is provided between the third solenoid reversing valve and the right sweeping drive cylinder, a hydraulically controlled single valve is provided between the sixth solenoid reversing valve and the suction nozzle cylinder, and a hydraulically controlled single valve is provided between the seventh solenoid reversing valve and the rear door cylinder.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In the solution of the utility model, the oil inlet and oil return port of the right sweeping brush motor are connected by a pipeline and then connected to the second electromagnetic reversing valve through a pipeline to form a differential connection. In this way, the right sweeping brush motor can run at a faster speed than the left sweeping brush motor. This allows for more thorough cleaning of areas such as the right shoulder of the vehicle during cleaning operations. At the same time, there is no need to change the motor model or add additional equipment, saving modification costs.

[0017] 2. A manual control pipeline is also set for the truck bed lifting drive cylinder. Using a manual pump, when the vehicle hydraulic system is not working, the truck bed can be controlled by manual operation to achieve the purpose of temporary maintenance or cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the hydraulic principle of a multifunctional double-sweeping car washing hydraulic system mentioned in the utility model;

[0019] Figure 2 This is a schematic diagram of the hydraulic principle of the oil supply module mentioned in this utility model;

[0020] Figure 3 This is a schematic diagram of the hydraulic principle of the oil return module mentioned in this utility model;

[0021] Figure 4 Schematic diagram of the hydraulic principle between the first electromagnetic reversing valve and the left sweeping brush motor mentioned in the present invention;

[0022] Figure 5 Schematic diagram of the hydraulic principle between the second electromagnetic reversing valve, the fourth electromagnetic reversing valve, the left sweeping drive cylinder and the right sweeping brush motor mentioned in the present utility model;

[0023] Figure 6 Schematic diagram of the hydraulic principle between the third electromagnetic reversing valve and the right sweep drive cylinder mentioned in the present utility model;

[0024] Figure 7 This is a schematic diagram of the hydraulic principle between the fifth electromagnetic reversing valve, the bucket lifting drive cylinder and the manual pump mentioned in the present utility model;

[0025] Figure 8 Schematic diagram of the hydraulic principle between the sixth electromagnetic reversing valve and the nozzle cylinder mentioned in the present utility model;

[0026] Figure 9 This is a schematic diagram of the hydraulic principle between the seventh solenoid reversing valve and the rear door cylinder mentioned in the present utility model.

[0027] In the picture:

[0028] P1, main oil supply pipeline, T1, main oil return pipeline;

[0029] 100, oil supply module, 110, oil supply tank, 120, liquid level gauge, 130, air filter, 140, oil suction filter, 150, oil pump, 160, earthquake-resistant pressure gauge, 170, pressure gauge switch;

[0030] 200, oil return module, 210, oil return filter, 220, oil return tank;

[0031] 300, hydraulic control valve group, 310, first solenoid reversing valve, 320, second solenoid reversing valve, 330, third solenoid reversing valve, 340, fourth solenoid reversing valve, 350, fifth solenoid reversing valve, 360, sixth solenoid reversing valve, 370, seventh solenoid reversing valve;

[0032] 400, hydraulic execution module, 410, left sweeping brush motor, 420, left sweeping drive cylinder, 430, right sweeping brush motor, 440, right sweeping drive cylinder, 450, bucket lift drive cylinder, 460, suction nozzle cylinder, 470, rear door cylinder;

[0033] 500. Hand pump. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0035] For example, see the attached Figure 1 The utility model provides a multifunctional double sweeping and washing hydraulic system for a car, comprising an oil supply module 100, an oil return module 200, a hydraulic control valve group 300 and a hydraulic execution module 400;

[0036] Among them, as attached Figure 2As shown, the oil supply module 100 is connected to the main oil supply pipeline P1, which is used to supply hydraulic oil to the main oil supply pipeline P1. The oil supply module 100 includes an oil supply tank 110 and an oil pump 150 that are connected in sequence. The oil supply tank 110 is provided with a liquid level gauge 120 and an air filter 130. An oil suction filter 140 is also provided between the oil supply tank 110 and the oil pump 150 to filter the oil to ensure that the oil entering the oil pump 150 and the main oil supply pipeline P1 is clean. A one-way valve is provided between the pump 150 and the main oil supply line P1 to prevent oil backflow. At the same time, a shock-resistant pressure gauge 160 is provided on the main oil supply line P1 to monitor the oil pressure of the main oil supply line P1 at any time. A pressure gauge switch 170 is provided between the main oil supply line P1 and the shock-resistant pressure gauge 160. The return oil module 200 is connected to the main return oil line T1 to receive the hydraulic oil from the main return oil line T1 and form a hydraulic oil circulation loop with the oil supply module 100, as shown in the attached figure. Figure 3 As shown, the oil return module 200 includes an oil return tank 220 , and an oil return filter 210 is provided between the oil return tank 220 and the main oil return line T1 to ensure that the return oil is clean;

[0037] In actual use, the oil supply module 100 controls the supply of hydraulic oil to the hydraulic execution module 400 through the main oil supply pipeline P1 through the hydraulic control valve group 300 to drive the various components of the hydraulic execution module 400 to operate. The hydraulic control valve group 300 includes a first solenoid reversing valve 310, a second solenoid reversing valve 320, a third solenoid reversing valve 330, a fourth solenoid reversing valve 340, a fifth solenoid reversing valve 350, a sixth solenoid reversing valve 360 ​​and a seventh solenoid reversing valve 370. The main oil supply pipeline P1 is connected to the first solenoid reversing valve 310, the second solenoid reversing valve 320, the third solenoid reversing valve 330, the fourth solenoid reversing valve 370 through pipelines. 340, the fifth solenoid reversing valve 350, the sixth solenoid reversing valve 360 ​​and the seventh solenoid reversing valve 370 are connected, the main return oil pipeline T1 is connected to the first solenoid reversing valve 310, the second solenoid reversing valve 320, the third solenoid reversing valve 330, the fourth solenoid reversing valve 340, the fifth solenoid reversing valve 350, the sixth solenoid reversing valve 360 ​​and the seventh solenoid reversing valve 370 through pipelines, and the hydraulic execution module 400 includes a left sweeping brush motor 410, a left sweeping drive cylinder 420, a right sweeping brush motor 430, a right sweeping drive cylinder 440, a bucket lifting drive cylinder 450, a nozzle cylinder 460 and a rear door cylinder 470, as shown in the attached Figure 4 As shown, the first electromagnetic reversing valve 310 is connected to the left sweeping brush motor 410 through a pipeline for controlling the operation of the left sweeping brush motor 410. Figure 5 As shown, the second electromagnetic reversing valve 320 is connected to the left sweep driving cylinder 420 through a pipeline to control the operation of the left sweep driving cylinder 420. Figure 6As shown, the third electromagnetic reversing valve 330 is connected to the right sweep driving cylinder 440 through a pipeline to control the operation of the right sweep driving cylinder 440. Figure 5 As shown, the second solenoid reversing valve 320 and the fourth solenoid reversing valve 340 are connected to the right sweeping brush motor 430 through a pipeline to control the operation of the right sweeping brush motor 430. The oil inlet and the oil return port of the right sweeping brush motor 430 are connected through a pipeline and then connected to the second solenoid reversing valve 320 through a pipeline to form a differential connection. In this way, the right sweeping brush motor 430 can run at a faster speed than the left sweeping brush motor 410. In this way, when performing a cleaning operation, the right side shoulder of the vehicle and other locations can be cleaned more thoroughly. In the specific structure, the oil inlet of the right sweeping brush motor 430 is connected to the second solenoid reversing valve 320 through a pipeline through the fourth solenoid reversing valve 340 and a one-way valve. The oil return port of the right sweeping brush motor 430 is also connected to the second solenoid reversing valve 320 through a pipeline through a one-way valve. As shown in the attached figure Figure 7 As shown, the fifth electromagnetic reversing valve 350 is connected to the bucket lifting drive cylinder 450 through a pipeline for controlling the operation of the bucket lifting drive cylinder 450. The bucket lifting drive cylinder 450 is also connected to a manual control pipeline. One end of the manual control pipeline is connected to the bucket lifting drive cylinder 450, and the other end is connected to the main return oil pipeline T1. The manual control pipeline is provided with a manual pump 500. By using the manual pump 500, when the vehicle hydraulic system is not working, the bucket can also be controlled by manual operation to achieve the purpose of temporary maintenance or cleaning, as shown in the attached figure. Figure 8 As shown, the sixth electromagnetic reversing valve 360 ​​is connected to the nozzle cylinder 460 through a pipeline to control the operation of the nozzle cylinder 460. Figure 9 As shown, the seventh electromagnetic reversing valve 370 is connected to the rear door cylinder 470 through a pipeline to control the operation of the rear door cylinder 470.

[0038] In a further solution, a back-pressure valve is provided on the pipeline between the fifth solenoid reversing valve 350 and the truck bed lifting drive cylinder 450. The load of the truck bed lifting drive cylinder 450 is relatively large. The main purpose of adding the back-pressure valve is to maintain a constant pressure, prevent liquid backflow, and ensure the normal operation of the pump. At the same time, it can also be used as a safety valve to protect the system from the harm of overpressure.

[0039] In a further solution, a hydraulically controlled single valve is provided between the first solenoid reversing valve 310 and the left sweeping brush motor 410, a hydraulically controlled single valve is provided between the third solenoid reversing valve 330 and the right sweeping drive cylinder 440, a hydraulically controlled single valve is provided between the sixth solenoid reversing valve 360 ​​and the suction nozzle cylinder 460, and a hydraulically controlled single valve is provided between the seventh solenoid reversing valve 370 and the rear door cylinder 470. The hydraulically controlled single valve is provided between the solenoid reversing valve and the hydraulic actuator mainly to maintain constant pressure by closing the hydraulically controlled single valve when these actuators need to be fixed in a certain state.

[0040] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually 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. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0041] The above are merely preferred embodiments of the present invention. Anyone skilled in the art may utilize the above-described technical solutions to modify the present invention or create equivalent technical solutions. Therefore, any simple modification or equivalent replacement based on the technical solutions of the present invention falls within the scope of protection claimed by the present invention.

Claims

1. A multifunctional double sweeping car washing hydraulic system, characterized in that: include: An oil supply module, the oil supply module is connected to the main oil supply pipeline and is used to supply hydraulic oil to the main oil supply pipeline. The oil supply module includes an oil supply tank and an oil pump that are connected in sequence; An oil return module, the oil return module is connected to the main oil return pipeline, and is used to receive the hydraulic oil from the main oil return pipeline and form a hydraulic oil circulation loop with the oil supply module. The oil return module includes an oil return tank; a hydraulic control valve group, the hydraulic control valve group including a first solenoid reversing valve, a second solenoid reversing valve, a third solenoid reversing valve, a fourth solenoid reversing valve, and a fifth solenoid reversing valve; the main oil supply pipeline is connected to the first solenoid reversing valve, the second solenoid reversing valve, the third solenoid reversing valve, the fourth solenoid reversing valve, and the fifth solenoid reversing valve respectively through pipelines; and the main oil return pipeline is connected to the first solenoid reversing valve, the second solenoid reversing valve, the third solenoid reversing valve, the fourth solenoid reversing valve, and the fifth solenoid reversing valve respectively through pipelines; A hydraulic execution module includes a left sweeping brush motor, a left sweeping drive cylinder, a right sweeping brush motor, a right sweeping drive cylinder, and a bucket lifting drive cylinder. The first electromagnetic reversing valve is connected to the left sweeping brush motor through a pipeline to control the operation of the left sweeping brush motor. The second electromagnetic reversing valve is connected to the left sweeping drive cylinder through a pipeline to control the operation of the left sweeping drive cylinder. The third electromagnetic reversing valve is connected to the right sweeping drive cylinder through a pipeline to control the operation of the right sweeping drive cylinder. The second electromagnetic reversing valve and the fourth electromagnetic reversing valve are connected to the right sweeping brush motor through a pipeline to control the operation of the right sweeping brush motor. The oil inlet of the right sweeping brush motor and The return oil port is connected through a pipeline and then connected to the second solenoid reversing valve through a pipeline. The oil inlet of the right sweeping brush motor is connected to the second solenoid reversing valve through a pipeline after passing through the fourth solenoid reversing valve and the one-way valve. The return oil port of the right sweeping brush motor is also connected to the second solenoid reversing valve through a pipeline after passing through the one-way valve. The fifth solenoid reversing valve is connected to the bucket lifting drive cylinder through a pipeline for controlling the operation of the bucket lifting drive cylinder. The bucket lifting drive cylinder is also connected to a manual control pipeline. One end of the manual control pipeline is connected to the bucket lifting drive cylinder, and the other end is connected to the main oil return pipeline. The manual control pipeline is provided with a manual pump.

2. A multifunctional double sweeping car washing hydraulic system according to claim 1, characterized in that: The oil supply tank is provided with a liquid level gauge and an air filter, an oil suction filter is provided between the oil supply tank and the oil pump, and a one-way valve is provided between the oil pump and the main oil supply pipeline.

3. The multifunctional double-sweeping car washing hydraulic system according to claim 2, characterized in that: A shock-resistant pressure gauge is provided on the main oil supply pipeline, and a pressure gauge switch is provided between the main oil supply pipeline and the shock-resistant pressure gauge.

4. The multifunctional double-sweeping car washing hydraulic system according to claim 3, characterized in that: An oil return filter is provided between the oil return tank and the main oil return pipeline.

5. The multifunctional double-sweeping car washing hydraulic system according to claim 4, characterized in that: A back pressure valve is provided on the pipeline between the fifth electromagnetic reversing valve and the bucket lifting drive cylinder.

6. The multifunctional double-sweeping car washing hydraulic system according to claim 5, characterized in that: The hydraulic control valve group also includes a sixth solenoid reversing valve and a seventh solenoid reversing valve. The hydraulic execution module also includes a nozzle cylinder and a rear door cylinder. The sixth solenoid reversing valve is connected to the nozzle cylinder through a pipeline to control the operation of the nozzle cylinder. The seventh solenoid reversing valve is connected to the rear door cylinder through a pipeline to control the operation of the rear door cylinder.

7. The multifunctional double-sweeping car washing hydraulic system according to claim 6, characterized in that: A hydraulically controlled single valve is arranged between the first solenoid reversing valve and the left sweeping brush motor, a hydraulically controlled single valve is arranged between the third solenoid reversing valve and the right sweeping drive cylinder, a hydraulically controlled single valve is arranged between the sixth solenoid reversing valve and the suction nozzle cylinder, and a hydraulically controlled single valve is arranged between the seventh solenoid reversing valve and the rear door cylinder.

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