Air suction prevention device for oil pump of new energy cleaning and sweeping vehicle

Abstract

The utility model discloses a new energy cleaning and sweeping vehicle oil pump air suction prevention device which comprises an oil tank (1), an oil suction pipeline (7) is arranged on the oil tank (1), a stop valve (3) is arranged between the oil tank (1) and the oil suction pipeline (7), a detection structure is arranged on the stop valve (3), an oil pump (4) is connected with the oil suction pipeline (7), and a control structure is arranged on the oil pump (4). The detection structure comprises a travel switch (2) arranged on the stop valve (3), the control structure comprises a motor (5) arranged on the oil pump (4) and a controller (10) arranged on the motor (5), the detection structure is used for detecting opening and closing of the stop valve (3), so that a signal is transmitted to the control structure to control the oil pump (4), the oil pump (4) can be opened only when the stop valve (3) is in an open state, and the oil pump (4) can be opened only when the stop valve (3) is in an open state. And the condition that equipment is damaged due to the fact that the oil pump (4) is started when the stop valve (3) is not opened is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicles, and specifically relates to an anti-air suction device for an oil pump of a new energy washing and sweeping vehicle. Background Art

[0002] With the rapid development of social economy, urbanization is accelerating, people's quality of life is constantly improving, and higher requirements are put forward for urban road environmental sanitation. At present, new energy washing and sweeping vehicles have become the mainstream configuration in the market. The hydraulic oil pump of this configuration is driven by an independent motor. Compared with the traditional fuel engine drive system, the motor drive system control method is more flexible. In order to facilitate the maintenance and replacement of hydraulic components, the oil pump suction port is usually equipped with a stop valve. In addition, when repairing or replacing parts, the stop valve needs to be closed; when restarting the oil pump, the stop valve needs to be opened.

[0003] Patent No. 201620005814.9, published on June 15, 2016, discloses an anti-air suction device for an engine oil pump. The device consists of a wave-breaking plate, a gravity flap, a counterweight limit block, a pin shaft, an oil passage, and a pin shaft support. The wave-breaking plate separates the vehicle engine oil pan into two parts, the lower part where the oil pump suction port is located is filled with oil; the wave-breaking plate is arranged with multiple oil passages and a gravity flap, and the gravity flap is installed on the lower surface of the wave-breaking plate through a pin shaft. When the oil pump is working, the oil suction port sucks oil from the lower part of the wave-breaking plate, and the oil in the upper part of the wave-breaking plate flows downward through the oil through the oil port and the gravity flap to fill the lower space; when the car tilts or bumps and causes the oil in the oil pan to fluctuate, the oil in the lower part of the wave-breaking plate cannot flow to the upper part through the gravity flap, so that the lower part of the wave-breaking plate remains full of oil, ensuring that the oil pump suction port is always below the oil level and there will be no emptying phenomenon.

[0004] When the maintenance personnel test the vehicle after the maintenance is completed, they often forget to open the stop valve due to negligence, causing the oil pump to be damaged by air suction. This seriously affects the vehicle maintenance progress, maintenance costs, and attendance rate, causing strong dissatisfaction among customers. Utility Model Content

[0005] The utility model aims to provide an anti-air suction device for an oil pump of a new energy washing and sweeping vehicle, which can prevent the oil pump from being damaged due to air suction.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a new energy washing and sweeping vehicle oil pump anti-air suction device, including a fuel tank, an oil suction pipeline is provided on the fuel tank, a stop valve is provided between the fuel tank and the oil suction pipeline, a detection structure is provided on the stop valve, the oil pump is connected to the oil suction pipeline, and a control structure is provided on the oil pump.

[0007] The detection structure includes a travel switch arranged on the stop valve, and the control structure includes a motor arranged on the oil pump and a controller arranged on the motor.

[0008] The controller is connected with the travel switch signal.

[0009] The travel switch is connected with the stop valve signal.

[0010] The oil pump is provided with an oil pressure pipeline, the end of the oil pressure pipeline is connected to a main valve group, and an oil return pipeline is provided between the main valve group and the oil tank.

[0011] The motor is controlled by a controller.

[0012] The main valve group is composed of more than one valve connected together.

[0013] The technical effect of the utility model is: using the detection structure to detect the opening and closing of the stop valve, thereby transmitting a signal to the control structure to control the oil pump, so that the oil pump can be opened only when the stop valve is in an open state, avoiding the situation where equipment damage occurs due to opening the oil pump when the stop valve is not opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] This specification includes the following drawings, which show the following contents:

[0015] Figure 1 This is a structural schematic diagram of a new energy washing and sweeping vehicle oil pump anti-air suction device of the utility model.

[0016] The markings in the figure are: 1. Oil tank; 2. Travel switch; 3. Stop valve; 4. Oil pump; 5. Motor; 6. Main valve group; 7. Oil suction pipeline; 8. Oil pressure pipeline; 9. Oil return pipeline; 10. Controller. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the specific implementation methods of the utility model through the description of the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0018] See also Figure 1 A new energy washing and sweeping vehicle oil pump anti-air suction device comprises an oil tank 1, an oil suction pipeline 7 is arranged on the oil tank 1, a stop valve 3 is arranged between the oil tank 1 and the oil suction pipeline 7, a detection structure is arranged on the stop valve 3, an oil pump 4 is connected to the oil suction pipeline 7, and a control structure is arranged on the oil pump 4.

[0019] The detection structure is used to detect the opening and closing of the stop valve 3, and then transmit a signal to the control structure to control the oil pump 4, so that the oil pump 4 can be opened only when the stop valve 3 is in the open state, avoiding the situation where the oil pump 4 is opened when the stop valve 3 is not opened and causing damage to the equipment.

[0020] The detection structure includes a travel switch 2 arranged on the stop valve 3, and the control structure includes a motor 5 arranged on the oil pump 4 and a controller 10 arranged on the motor 5; the travel switch 2 is used to detect whether the stop valve 3 is open, the oil pump 4 is driven by the motor 5, and the controller 10 is used to control the opening and closing of the motor 5.

[0021] The controller 10 is connected to the travel switch 2 by signal; the travel switch 2 gives a signal to the controller 10 to determine whether to turn on the motor 5.

[0022] The travel switch 2 is connected to the stop valve 3 by signal; the travel switch 2 is used to detect the open or closed state of the stop valve 3.

[0023] An oil pressure pipeline 8 is provided on the oil pump 4, and the end of the oil pressure pipeline 8 is connected to the main valve group 6, and an oil return pipeline 9 is provided between the main valve group 6 and the oil tank 1; the oil pump 4 sucks oil from the oil tank 1 through the oil suction pipeline 7 and the stop valve 3, and the high-pressure oil of the oil pump 4 is transported to the main valve group through the oil pressure pipeline 8, and the action and reversing of each hydraulic actuator are controlled by the main valve group, and the system return oil returns to the oil tank 1 through the oil return pipeline 9.

[0024] The motor 5 is controlled by the controller 10 ; the controller 10 controls the opening and closing of the motor 5 , thereby driving the opening and closing of the oil pump 4 .

[0025] The main valve group 6 is composed of more than one valve connected together; the main valve group controls the action and switching of each hydraulic actuator.

[0026] Under normal operating conditions, the stop valve 3 is in the open state, and the oil pump 4 sucks oil from the oil tank 1 through the oil suction pipeline 7 and the stop valve 3. The high-pressure oil of the oil pump 4 is delivered to the main valve group through the pressure oil pipeline 8, and the action and reversing of each hydraulic actuator are controlled by the main valve group. The system return oil returns to the oil tank 1 through the return oil pipeline 9; if the oil pump 4 is damaged and needs to be replaced, first, turn off the main power of the vehicle; then, close the stop valve 3; finally, replace the oil pump 4. After replacing the oil pump 4, it is necessary to restart the vehicle to observe whether it can work normally. First, turn on the main power supply and high voltage power on. When the travel switch 2 detects that the stop valve 3 is in the open state, the travel switch 2 generates a detection signal and sends it to the controller 10. The controller 10 generates a start signal according to the detection signal and sends it to the motor 5. The motor 5 starts normally according to the start signal and drives the oil pump 4. At this time, the hydraulic system can work normally; when the stop valve 3 is in the closed state, the travel switch 2 cannot generate a detection signal to the controller 10, and the controller 10 cannot generate a start signal to the motor 5. The motor 5 is prohibited from starting. At this time, the hydraulic system cannot work.

[0027] In summary, the oil pump 4 can be driven by the motor 5 only when the stop valve 3 is in the open state. Therefore, the device can reliably prevent the oil pump 4 from being damaged due to air suction caused by human negligence or misoperation.

[0028] The technical effect of the utility model is: using the detection structure to detect the opening and closing of the stop valve 3, thereby transmitting a signal to the control structure to control the oil pump 4, so that the oil pump 4 can be opened only when the stop valve 3 is in an open state, avoiding the situation where the oil pump 4 is opened when the stop valve 3 is not opened and causing damage to the equipment.

[0029] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A new energy washing and sweeping vehicle oil pump anti-air suction device, comprising an oil tank (1), characterized in that: The oil tank (1) is provided with an oil suction pipeline (7), a stop valve (3) is provided between the oil tank (1) and the oil suction pipeline (7), a detection structure is provided on the stop valve (3), the oil pump (4) is connected to the oil suction pipeline (7), and a control structure is provided on the oil pump (4).

2. According to claim 1, a new energy washing and sweeping vehicle oil pump anti-air suction device is characterized by: The detection structure comprises a travel switch (2) arranged on a stop valve (3), and the control structure comprises a motor (5) arranged on an oil pump (4) and a controller (10) arranged on the motor (5).

3. The anti-air suction device for the oil pump of a new energy washing and sweeping vehicle according to claim 2 is characterized in that: The controller (10) is connected to the travel switch (2) by signal.

4. A new energy washing and sweeping vehicle oil pump anti-air suction device according to claim 2 or 3, characterized in that: The travel switch (2) is signal-connected to the stop valve (3).

5. The anti-air suction device for the oil pump of a new energy washing and sweeping vehicle according to claim 1 or 2 is characterized in that: The oil pump (4) is provided with an oil pressure pipeline (8), the end of which is connected to a main valve group (6), and an oil return pipeline (9) is provided between the main valve group (6) and the oil tank (1).

6. The anti-air suction device for the oil pump of a new energy washing and sweeping vehicle according to claim 2 or 3 is characterized in that: The motor (5) is controlled by a controller (10).

7. The anti-air suction device for the oil pump of a new energy washing and sweeping vehicle according to claim 5 is characterized in that: The main valve group (6) is composed of more than one valve connected together.

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