Hydraulic system for a high-speed sweeper truck

Abstract

The application provides a hydraulic system of a high-speed sweeping vehicle, comprising a working hydraulic system part, a sweeping roller and a sweeping roller emergency lifting hydraulic system part and an auxiliary hydraulic system part. The application has the following beneficial effects: the working hydraulic system part is arranged to drive the waterway hydraulic pump to rotate the waterway hydraulic motor, and then drive the water pump to work; the sweeping roller and the sweeping roller emergency lifting hydraulic system part are arranged to enable the staff to transport hydraulic oil to the sweeping roller motor through the sweeping roller and the sweeping roller emergency lifting hydraulic pump to drive the sweeping roller motor to work, and then drive the sweeping roller to rotate and work when the staff is working; and the auxiliary hydraulic system part is arranged to enable the staff to control the lifting of the garbage box of the sweeping vehicle, the opening and closing of the garbage box door, the lifting of the anti-collision bag and the normal lifting of the sweeping roller through the corresponding buttons of the operation panel in the cab.

Description

TECHNICAL FIELD

[0001] The application relates to a hydraulic system of a high-speed washing and sweeping vehicle and belongs to the field of hydraulic systems. BACKGROUND

[0002] At present, highways develop rapidly, and the traffic flow is large, the speed is fast, and the danger is high, so the washing and sweeping work of the highways is particularly important. The traditional washing and sweeping vehicle or the existing high-speed washing and sweeping vehicle is low in speed and cannot reach 60km / h, far failing to meet the driving speed and cleaning needs of the highways; the working mode is single and cannot be switched according to the actual working conditions, thereby affecting the driving of the side lane; the energy consumption is high; when a large obstacle cannot be washed and swept, the vehicle can only be braked or changed lanes and cannot avoid the obstacle in time during driving on the current lane, and the safety is poor. SUMMARY

[0003] In view of the defects in the prior art, the application aims to provide a hydraulic system of a high-speed washing and sweeping vehicle.

[0004] In order to achieve the above-mentioned purpose, the application is implemented by the following technical scheme:

[0005] The hydraulic system of the high-speed washing and sweeping vehicle comprises a working hydraulic system part, a sweeping roller and a sweeping roller emergency lifting hydraulic system part and an auxiliary hydraulic system part, the working hydraulic system part is in oil return communication with the sweeping roller and the sweeping roller emergency lifting hydraulic system part, the sweeping roller and the sweeping roller emergency lifting hydraulic system part are in oil return communication with the auxiliary hydraulic system part, the oil return port of the working hydraulic system part and the oil return port of the auxiliary hydraulic system part are connected with a radiator, and the radiator is in communication with a hydraulic oil tank.

[0006] Further, the working hydraulic system part comprises a side sweeping hydraulic pump, a waterway hydraulic pump, a side sweeping hydraulic system part and a waterway hydraulic system part, the low-pressure oil suction ports of the side sweeping hydraulic pump and the waterway hydraulic pump are in communication with each other and then in communication with the hydraulic oil tank, the oil outlet of the side sweeping hydraulic pump is in communication with the side sweeping hydraulic system part, and the oil outlet of the waterway hydraulic pump is in communication with the waterway hydraulic system part.

[0007] The side sweeping hydraulic system part comprises a side sweeping filter, a side sweeping check valve, a side sweeping overflow valve, a side sweeping electromagnetic valve group and a side sweeping execution assembly, the oil outlet of the side sweeping hydraulic pump is in series connection with the side sweeping filter and the side sweeping check valve and then divided into two paths, one path is connected with the side sweeping overflow valve, one end of the side sweeping overflow valve is in communication with the oil return port of the side sweeping electromagnetic valve group and connected with the radiator, the radiator is in communication with the hydraulic oil tank through an oil return filter, and the other path is in communication with the oil inlet of the side sweeping electromagnetic valve group.

[0008] The side-scan execution assembly comprises a first side-scan motor, a second side-scan motor, a third side-scan motor and a fourth side-scan motor; the side-scan electromagnetic valve group comprises a side-scan hydraulic valve block and four side-scan electromagnetic directional valves; the four side-scan electromagnetic directional valves are connected to the first side-scan motor, the second side-scan motor, the third side-scan motor and the fourth side-scan motor respectively through the A and B ports of the side-scan hydraulic valve block; and one brush motor superimposed type speed regulating valve is separately superimposed on each of the four side-scan electromagnetic directional valves.

[0009] The waterway hydraulic system part comprises a waterway hydraulic filter, a waterway hydraulic one-way valve, a waterway hydraulic motor, a waterway hydraulic electromagnetic valve group and a waterway hydraulic speed regulating valve group; the waterway hydraulic speed regulating valve group comprises a waterway hydraulic proportional speed regulating valve and a rectifier plate; the waterway hydraulic proportional speed regulating valve is arranged on the rectifier plate; the waterway hydraulic electromagnetic valve group comprises a waterway hydraulic electromagnetic directional valve, a waterway hydraulic overflow valve and a waterway hydraulic valve block; the low-pressure oil suction port of the waterway hydraulic pump is communicated with the hydraulic oil tank; the oil outlet of the waterway hydraulic pump is connected in series with the waterway hydraulic filter and the waterway hydraulic one-way valve, and then is communicated with the oil inlet of the waterway hydraulic valve block; the waterway hydraulic electromagnetic directional valve is communicated with the oil inlet of the waterway hydraulic proportional speed regulating valve through the oil port A of the waterway hydraulic valve block; the oil outlet of the waterway hydraulic proportional speed regulating valve is communicated with one of the oil ports of the waterway hydraulic motor; the other oil port of the waterway hydraulic motor is communicated with the working oil port B of the waterway hydraulic electromagnetic valve group; the oil leakage port of the waterway hydraulic motor is communicated with the hydraulic oil tank; and the oil return port of the waterway hydraulic electromagnetic valve group is communicated with the radiator.

[0010] Further, the sweep roller and sweep roller emergency lifting hydraulic system part comprises a sweep roller and sweep roller emergency lifting hydraulic valve group, a sweep roller and sweep roller emergency lifting hydraulic pump, a sweep roller and sweep roller emergency lifting one-way valve, a sweep roller and sweep roller emergency lifting overflow valve, a sweep roller and sweep roller emergency lifting hydraulic valve block and a sweep roller and sweep roller emergency lifting execution mechanism; the low-pressure oil suction port of the sweep roller and sweep roller emergency lifting hydraulic pump is communicated with the hydraulic oil tank; the high-pressure oil port of the sweep roller and sweep roller emergency lifting hydraulic pump is communicated with the oil inlet of the sweep roller and sweep roller emergency lifting hydraulic valve block; the sweep roller and sweep roller emergency lifting one-way valve is connected in series between the sweep roller and sweep roller emergency lifting hydraulic pump and the sweep roller and sweep roller emergency lifting hydraulic valve block.

[0011] The sweep roller and sweep roller emergency lifting hydraulic valve group comprises a sweep roller hydraulic valve group part and a sweep roller emergency lifting hydraulic valve group part; the sweep roller hydraulic valve group part and the sweep roller emergency lifting hydraulic valve group part are superimposed on the sweep roller and sweep roller emergency lifting hydraulic valve block; the sweep roller hydraulic valve group part comprises a sweep roller electromagnetic directional valve and a sweep roller double one-way throttle valve; the sweep roller execution mechanism comprises a sweep roller motor; the sweep roller electromagnetic directional valve is communicated with the two oil ports of the sweep roller motor through the A and B ports of the sweep roller and sweep roller emergency lifting hydraulic valve block; the sweep roller emergency lifting hydraulic valve group part comprises an emergency lifting electromagnetic directional valve and an emergency lifting double one-way hydraulic control valve; and one sweep roller and sweep roller emergency lifting overflow valve is further superimposed in the sweep roller and sweep roller emergency lifting hydraulic valve group.

[0012] Further, the auxiliary hydraulic system part includes an auxiliary hydraulic pump, a left side sweeping auxiliary hydraulic system part, a right side sweeping auxiliary hydraulic system part, other auxiliary hydraulic system parts, an auxiliary hydraulic filter, and an auxiliary hydraulic check valve. The low-pressure oil suction port of the auxiliary hydraulic pump is in communication with the hydraulic oil tank. The high-pressure oil outlet of the auxiliary hydraulic pump is connected to the oil inlets of the left side sweeping auxiliary hydraulic system part, the right side sweeping auxiliary hydraulic system part, and the other auxiliary hydraulic system parts through the auxiliary hydraulic filter and the auxiliary hydraulic check valve.

[0013] Further, the left side sweeping auxiliary hydraulic system part includes a left front sweeping telescopic oil cylinder, a left front sweeping swing arm oil cylinder, a left front sweeping down pressure oil cylinder, a left rear sweeping swing arm oil cylinder, a left rear sweeping down pressure oil cylinder, and a left side auxiliary electromagnetic valve group. The left side auxiliary electromagnetic valve group further includes five identical left side auxiliary electromagnetic directional valves and five identical left side auxiliary double check valves, and a left side sweeping auxiliary valve block. The left front sweeping telescopic oil cylinder, the left front sweeping swing arm oil cylinder, the left front sweeping down pressure oil cylinder, the left rear sweeping swing arm oil cylinder, and the left rear sweeping down pressure oil cylinder are respectively connected to one left side auxiliary electromagnetic directional valve through the working oil ports of the left side sweeping auxiliary valve block. The five left side auxiliary electromagnetic directional valves are respectively connected to one left side auxiliary double check valve. The right side sweeping auxiliary hydraulic system part includes a right front sweeping telescopic oil cylinder, a right front sweeping swing arm oil cylinder, a right front sweeping down pressure oil cylinder, a right rear sweeping swing arm oil cylinder, a right rear sweeping down pressure oil cylinder, and a right side auxiliary electromagnetic valve group. The right side auxiliary electromagnetic valve group further includes five identical right side auxiliary electromagnetic directional valves and five identical right side auxiliary double check valves, and a right side sweeping auxiliary valve block. The right front sweeping telescopic oil cylinder, the right front sweeping swing arm oil cylinder, the right front sweeping down pressure oil cylinder, the right rear sweeping swing arm oil cylinder, and the right rear sweeping down pressure oil cylinder are respectively connected to one right side auxiliary electromagnetic directional valve through the working oil ports of the right side sweeping auxiliary valve block. The five right side auxiliary electromagnetic directional valves are respectively connected to one right side auxiliary double check valve.

[0014] Further, the other auxiliary hydraulic system part comprises a first tank jacking cylinder, a second tank jacking cylinder, a garbage can door opening and closing cylinder, a first anti-collision bag lifting cylinder, a second anti-collision bag lifting cylinder, an auxiliary hydraulic valve block and other auxiliary hydraulic valve groups, the working oil ports of the auxiliary hydraulic valve block are respectively connected with the rod cavities and the rodless cavities of the first tank jacking cylinder and the second tank jacking cylinder, the garbage can door opening and closing cylinder, the first anti-collision bag lifting cylinder and the second anti-collision bag lifting cylinder, the other auxiliary hydraulic valve groups comprise a tank jacking cylinder electromagnetic reversing valve, a garbage can door opening and closing cylinder electromagnetic reversing valve, an anti-collision bag lifting cylinder electromagnetic reversing valve and a normal lifting electromagnetic reversing valve of a sweeping roller, the tank jacking cylinder electromagnetic reversing valve, the garbage can door opening and closing cylinder electromagnetic reversing valve, the anti-collision bag lifting cylinder electromagnetic reversing valve and the normal lifting electromagnetic reversing valve of the sweeping roller are respectively stacked with an other auxiliary double one-way throttling valve, the rod cavities and the rodless cavities of the first tank jacking cylinder and the second tank jacking cylinder are respectively connected and then connected with the tank jacking cylinder electromagnetic reversing valve, the garbage can door opening and closing cylinder is connected with the garbage can door opening and closing cylinder electromagnetic reversing valve, the rod cavities and the rodless cavities of the first anti-collision bag lifting cylinder and the second anti-collision bag lifting cylinder are respectively connected and then connected with the anti-collision bag lifting cylinder electromagnetic reversing valve, the rod cavities of the first sweeping roller lifting cylinder and the second sweeping roller lifting cylinder are connected with each other and then connected with the working oil port B of the normal lifting electromagnetic reversing valve of the sweeping roller, the rodless cavities of the first sweeping roller lifting cylinder and the second sweeping roller lifting cylinder are connected with each other and then divided into two paths, one path is connected with the working oil port A of the normal lifting electromagnetic reversing valve of the sweeping roller, and the other path is connected with the working oil port B of the emergency lifting electromagnetic reversing valve through a series emergency lifting one-way valve.

[0015] Further, the other auxiliary hydraulic system part further comprises an auxiliary stacked relief valve, an auxiliary stacked unloading valve, a tank jacking cylinder balance valve and a normal lifting electromagnetic one-way valve of a sweeping roller, the auxiliary stacked relief valve and the auxiliary stacked unloading valve are stacked on the auxiliary hydraulic valve block, the normal lifting electromagnetic one-way valve of the sweeping roller is stacked below the normal lifting electromagnetic reversing valve of the sweeping roller, and the tank jacking cylinder balance valve is stacked below the tank jacking cylinder electromagnetic reversing valve.

[0016] Further, the first tank jacking cylinder, the second tank jacking cylinder, the garbage can door opening and closing cylinder, the first anti-collision bag lifting cylinder and the second anti-collision bag lifting cylinder are all provided with double one-way hydraulic locks.

[0017] Further, the oil return of the left side sweeping auxiliary hydraulic system part, the right side sweeping auxiliary hydraulic system part and the other auxiliary hydraulic system part is connected with each other and connected with a radiator.

[0018] Further, the sweeping roller, the sweeping roller emergency lifting hydraulic pump, the side sweeping hydraulic pump and the waterway hydraulic pump are three-gear pumps, the oil suction ports of the three-gear pumps are connected with an oil tank and are connected with a first oil suction filter and a second oil suction filter.

[0019] The present application has the following advantages:

[0020] The present application sets the working hydraulic system part, so that the waterway hydraulic pump drives the waterway hydraulic motor to rotate, and then drives the water pump to work. The operator can adjust the size of the waterway hydraulic proportional speed regulating valve opening according to the actual working condition when performing cleaning operation, through the water output adjusting knob on the cab control panel, and then the size of the water pump water output, so as to achieve the effect of energy saving and water saving. The setting of the middle H function of the waterway hydraulic electromagnetic reversing valve can ensure that the hydraulic oil flows back to the oil tank when the water pump does not work, reduce the heating of the hydraulic oil and the hydraulic components caused by power consumption, and prolong the service life of the hydraulic components. The setting of the side sweeping hydraulic pump and the side sweeping motor, the side sweeping hydraulic pump drives the side sweeping motor to rotate, and then drives the side sweeping brush to work. The four side sweeping brushes are affected by the pipeline, the wear degree of the brush, etc. The four sweeping brush motors rotate at different speeds, which affects the cleaning effect. The sweeping brush motor superposition type speed regulating valve 116 can make the four sweeping brush motors rotate at a stable speed, improve the cleaning effect and cleaning efficiency. The setting of the side sweeping overflow valve can make the oil circuit in the side sweeping hydraulic system part more safe and stable. When the side sweeping brush is stuck and cannot rotate, the side sweeping overflow valve can limit the maximum pressure of the side sweeping hydraulic system, protect the hydraulic components, and improve the safety;

[0021] The present application sets the working hydraulic system part, so that the waterway hydraulic pump drives the waterway hydraulic motor to rotate, and then drives the water pump to work. The operator can adjust the size of the waterway hydraulic proportional speed regulating valve opening according to the actual working condition when performing cleaning operation, through the water output adjusting knob on the cab control panel, and then the size of the water pump water output, so as to achieve the effect of energy saving and water saving. The setting of the middle H function of the waterway hydraulic electromagnetic reversing valve can ensure that the hydraulic oil flows back to the oil tank when the water pump does not work, reduce the heating of the hydraulic oil and the hydraulic components caused by power consumption, and prolong the service life of the hydraulic components. The setting of the side sweeping hydraulic pump and the side sweeping motor, the side sweeping hydraulic pump drives the side sweeping motor to rotate, and then drives the side sweeping brush to work. The four side sweeping brushes are affected by the pipeline, the wear degree of the brush, etc. The four sweeping brush motors rotate at different speeds, which affects the cleaning effect. The sweeping brush motor superposition type speed regulating valve 116 can make the four sweeping brush motors rotate at a stable speed, improve the cleaning effect and cleaning efficiency. The setting of the side sweeping overflow valve can make the oil circuit in the side sweeping hydraulic system part more safe and stable. When the side sweeping brush is stuck and cannot rotate, the side sweeping overflow valve can limit the maximum pressure of the side sweeping hydraulic system, protect the hydraulic components, and improve the safety;

[0022] The present application through the setting of left auxiliary hydraulic system part and right auxiliary hydraulic system part, and through the pre-setting scheme, the operator can select the cleaning mode according to the different road conditions through the button on the operation panel in the cab during the cleaning operation, the cleaning mode is divided into 3.5m single left sweep, 4.1m single left sweep, 3.5m single right sweep, 4.1m single right sweep, 3.5m full sweep and 4.1m full sweep, and the cleaning operation can be carried out in many occasions such as highway, ring road and urban trunk road, and the operation flexibility is greatly improved;

[0023] The present application through the setting of other auxiliary hydraulic system part, so that the staff can control the sweeper garbage box lifting, garbage box door opening and closing, anti-collision bag lifting and normal lifting of the sweeping roller through the corresponding button on the operation panel in the cab. The setting of the box body jacking cylinder balance valve can effectively control the smooth descent of the box body jacking cylinder at the required speed, prevent the action out of control phenomenon due to the influence of the load change of the garbage box, and the setting of the sweeping roller normal lifting cylinder electromagnetic one-way valve can keep the spool in the right position when not electrified, the oil circuit can only be one-way conducted, the sweeping roller lifting cylinder can only retract under the action of hydraulic oil, and the reverse oil circuit is not conducted, so that the sweeping roller lifting cylinder is locked and cannot be extended, thereby locking the sweeping roller and preventing it from descending; after electrification, the spool is switched to the left position, the oil circuit can be controlled to flow forward or reverse through the sweeping roller normal lifting electromagnetic reversing valve, thereby controlling the sweeping roller to rise or descend. The setting of the normal lifting electromagnetic reversing valve Y type function can make the sweeping roller freely move up and down with the ups and downs of the road surface under the condition that the sweeping roller normal lifting cylinder electromagnetic one-way valve is electrified and the oil can flow freely, thereby avoiding the hard impact on the mechanical structure and hydraulic elements, improving the safety, and prolonging the service life of the hydraulic elements and mechanical structure; when the sweeping roller normal lifting cylinder electromagnetic one-way valve is de-energized and the spool remains in the right position to act as a one-way valve, the one-way valve can be back pressure-free, and the working performance of the one-way valve is guaranteed. The setting of the auxiliary superimposed unloading valve can ensure that the auxiliary hydraulic pump is started without load, protect the auxiliary hydraulic pump from damage caused by hydraulic impact, reduce power consumption through unloading when the auxiliary hydraulic system is not working, reduce the heating of hydraulic oil and hydraulic elements, and prolong the service life of the hydraulic elements. The setting of the auxiliary superimposed overflow valve can limit the maximum working pressure of the auxiliary system hydraulic part, avoid the danger caused by excessive pressure or damage to the hydraulic elements, and improve the service life of the auxiliary hydraulic system part.

[0024] The filter can filter the impurities in the oil circuit to improve the reliability of the hydraulic elements and prolong the service life of the hydraulic elements. The radiator can radiate the hydraulic oil in the working hydraulic system part to improve the stability of the hydraulic oil working.

[0025] The triple gear pump in the application can share a driving shaft, improves system efficiency, reduces energy consumption, prolongs the service life of the equipment, and has small overall size, reduces space occupation, and facilitates installation and debugging. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0027] Figure 1 is the overall structure schematic diagram of the hydraulic system in the embodiment of the present application;

[0028] Figure 2 is the overall structure schematic diagram of the side scanning hydraulic system part in the embodiment of the present application;

[0029] Figure 3 is the overall structure schematic diagram of the waterway hydraulic system part in the embodiment of the present application;

[0030] Figure 4 is the overall structure schematic diagram of the scanning roller and scanning roller emergency lifting hydraulic system part in the embodiment of the present application;

[0031] Figure 5 is the overall structure schematic diagram of the left side scanning auxiliary hydraulic system part in the embodiment of the present application;

[0032] Figure 6 is the overall structure schematic diagram of the right side scanning auxiliary hydraulic system part in the embodiment of the present application;

[0033] Figure 7 is the overall structure schematic diagram of the other auxiliary hydraulic system part in the embodiment of the present application.

[0034] 001, triple gear pump; 100, working hydraulic system part; 110, side-scan hydraulic system part; 0012, side-scan hydraulic pump; 111, side-scan filter; 112, side-scan check valve; 113, side-scan overflow valve; 1141, first side-scan motor; 1142, second side-scan motor; 1143, third side-scan motor; 1144, fourth side-scan motor; 115, side-scan hydraulic valve block; 116, brush motor superimposed speed regulating valve; 117, side-scan electromagnetic reversing valve; 120, waterway hydraulic system part; 0013, waterway hydraulic pump; 121, waterway hydraulic filter; 122, waterway hydraulic check valve; 123, waterway hydraulic electromagnetic reversing valve; 124, waterway hydraulic overflow valve; 125, waterway hydraulic valve block; 126, rectifier plate; 127, hydraulic proportional speed regulating valve; 128, waterway hydraulic motor; 200, sweep roller and sweep roller emergency lifting hydraulic system part; 0011, sweep roller and sweep roller emergency lifting hydraulic pump; 210, emergency lifting electromagnetic reversing valve; 211, emergency lifting bidirectional hydraulic control check valve; 212, sweep roller and sweep roller emergency lifting overflow valve; 213, emergency lifting check valve; 220, sweep roller electromagnetic reversing valve; 221, sweep roller double check throttle valve; 222, sweep roller motor; 230, sweep roller and sweep roller emergency lifting hydraulic valve block; 2401, first sweep roller lifting oil cylinder; 2402, second sweep roller lifting oil cylinder; 250, sweep roller and sweep roller emergency lifting check valve; 300, auxiliary hydraulic system part; 002, auxiliary hydraulic pump; 301, auxiliary superimposed overflow valve; 302, auxiliary superimposed unloading valve; 310, left side-scan auxiliary hydraulic system part; 311, left front brush telescopic oil cylinder; 312, left front brush swing arm oil cylinder; 313, left front brush down-pressing oil cylinder; 314, left rear brush swing arm oil cylinder; 315, left rear brush down-pressing oil cylinder; 316, left side-scan auxiliary valve block; 317, left side auxiliary double check throttle valve; 318, left side auxiliary electromagnetic reversing valve; 320, right side-scan auxiliary hydraulic system part; 321, right front brush telescopic oil cylinder; 322, right front brush swing arm oil cylinder; 323, right front brush down-pressing oil cylinder; 324, right rear brush swing arm oil cylinder; 325, right rear brush down-pressing oil cylinder; 326, right side-scan auxiliary valve block; 327, right side auxiliary double check throttle valve; 328, right side auxiliary electromagnetic reversing valve; 330, other auxiliary hydraulic system part; 3301, first box body jacking oil cylinder; 3302, second box body jacking oil cylinder; 3303, dustbin door opening and closing oil cylinder; 3304, first anti-collision bag lifting oil cylinder; 3305, second anti-collision bag lifting oil cylinder; 3306, auxiliary hydraulic valve block; 3307, box body jacking oil cylinder balance valve; 3308, other auxiliary double check throttle valve; 3309, sweep roller normal lifting oil cylinder electromagnetic check valve; 3310, box body jacking oil cylinder electromagnetic reversing valve; 3311, dustbin door opening and closing oil cylinder electromagnetic reversing valve; 3312, anti-collision bag lifting oil cylinder electromagnetic reversing valve; 3313, sweep roller normal lifting electromagnetic reversing valve; 340, auxiliary hydraulic filter;350 auxiliary hydraulic one-way valve; 400 hydraulic oil tank; 410 radiator; 420 liquid temperature gauge; 430 air filter; 440 first oil suction filter; 450 second oil suction filter; 451 oil suction butterfly valve; 460 oil return filter; 470 oil discharge ball valve. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0036] Please refer to Figure 1 The present application provides a hydraulic system of a high-speed washing and sweeping vehicle, which comprises a working hydraulic system part 100, a sweeping roller and sweeping roller emergency lifting hydraulic system part 200, and an auxiliary hydraulic system part 300. The working hydraulic system part 100 is used to drive the sweeping brush motor to rotate for side sweeping work and drive the water pump to rotate for work to provide water source for the whole vehicle. The sweeping roller and sweeping roller emergency lifting hydraulic system part 200 is used to drive the sweeping roller to rotate for rear sweeping roller work and complete the sweeping roller emergency obstacle avoidance lifting action. The auxiliary hydraulic system part 300 is used to assist the high-speed washing and sweeping vehicle work so that the high-speed washing and sweeping vehicle can adapt to various different working conditions.

[0037] Please refer to Figure 2 and Figure 3The working hydraulic system part 100 includes a side-scan hydraulic pump 0012, a waterway hydraulic pump 0013, a side-scan hydraulic system part 110, and a waterway hydraulic system part 120. The side-scan hydraulic system part 110 includes a first side-scan motor 1141, a second side-scan motor 1142, a third side-scan motor 1143, a fourth side-scan motor 1144, a side-scan hydraulic valve block 115, and four identical side-scan electromagnetic reversing valves 117. The side-scan hydraulic pump 0012 is a constant-displacement gear pump, and its low-pressure oil suction port draws oil from the hydraulic oil tank 400 through a second oil suction filter 450. The oil outlet is connected to the oil inlet of the side-scan hydraulic valve block 115 to provide high-pressure oil to the side-scan hydraulic system part 110. The four identical side-scan electromagnetic reversing valves 117 are connected to the two working oil ports of the first side-scan motor 1141, the second side-scan motor 1142, the third side-scan motor 1143, and the fourth side-scan motor 1144 through the A and B ports of the side-scan hydraulic valve block 115, respectively. By switching the side-scan electromagnetic reversing valves 117 to the left or right position, the rotation direction of the first side-scan motor 1141, the second side-scan motor 1142, the third side-scan motor 1143, and the fourth side-scan motor 1144 can be controlled. Each of the four identical side-scan electromagnetic reversing valves 117 is stacked with a brush motor stacking speed regulating valve 116 to adjust the rotation speed of the four side-scan motors. The side of the hydraulic oil tank 400 is equipped with a liquid temperature gauge 420 to monitor the oil level and temperature in the hydraulic system, ensuring that the volume of hydraulic oil in the hydraulic oil tank 400 operates within an appropriate temperature range, thereby prolonging the service life of the equipment and improving the performance of the system. The top of the hydraulic oil tank 400 is equipped with an air filter 430 to prevent particulate contaminants from entering the system through the breathing port of the hydraulic oil tank 400 and to prevent particulate contaminants from mixing during the oiling process, thereby prolonging the working period and service life of the oil and components and ensuring the normal operation of the hydraulic system. In addition, it can also maintain the pressure balance between the oil tank and the atmospheric pressure, avoiding the occurrence of cavitation in the pump.

[0038] A side-scan overflow valve 113 is connected in parallel between the side-scan hydraulic pump 0012 and the side-scan hydraulic valve block 115. The side-scan overflow valve 113 has an unloading function, which can start the side-scan hydraulic pump 0012 without load and prolong its service life. The side-scan overflow valve 113 can establish a working pressure after being energized, with a set pressure value of 100 bar to limit the side-scan hydraulic system to not exceed the set value and protect the side-scan hydraulic system. The high-pressure outlet of the side-scan hydraulic pump 0012 is also connected in series with a side-scan filter 111 and a side-scan check valve 112 to protect the side-scan hydraulic pump 0012 from hydraulic impact and maintain the cleanliness of the side-scan hydraulic system circuit, thereby prolonging the service life of the hydraulic components. The oil return port of the side-scan hydraulic system is connected to the side-scan overflow valve 113 through the oil return port of the side-scan hydraulic valve block 115 and then connected to the radiator 410.

[0039] The waterway hydraulic system part 120 includes a waterway hydraulic motor 128, a waterway hydraulic electromagnetic valve group, and a waterway hydraulic speed regulating valve group. The waterway hydraulic electromagnetic valve group includes a waterway hydraulic electromagnetic reversing valve 123, a waterway hydraulic overflow valve 124, and a waterway hydraulic valve block 125, and the waterway hydraulic speed regulating valve group includes a waterway hydraulic proportional speed regulating valve 127 and a rectifier plate 126. The waterway hydraulic pump 0013 is a constant displacement gear pump, and its low-pressure oil suction port sucks oil from the hydraulic oil tank 400 through the second oil suction filter 450. The high-pressure oil outlet is connected with the oil inlet of the waterway hydraulic valve block 125 to provide power to the waterway hydraulic system. The waterway hydraulic electromagnetic reversing valve 123 is connected with the oil inlet of the waterway hydraulic speed regulating valve group through the oil port A of the waterway hydraulic valve block 125. The oil outlet of the waterway hydraulic speed regulating valve group is connected with one of the oil ports of the waterway hydraulic motor 128. The other oil port of the waterway hydraulic motor 128 is connected with the oil port B of the waterway hydraulic valve block 125. The oil discharge port of the waterway hydraulic motor 128 is connected with the hydraulic oil tank 400.

[0040] The waterway hydraulic electromagnetic reversing valve 123 is an H-type electromagnetic reversing valve. When the waterway system is not working, keeping the waterway hydraulic electromagnetic reversing valve 123 in the neutral position can unload the waterway hydraulic system part 120, start the waterway hydraulic pump 0013 without load, protect the hydraulic pump from hydraulic impact, reduce heat generation, reduce energy consumption, and prolong the service life of the hydraulic components. When the waterway system is working, the waterway hydraulic electromagnetic reversing valve 123 can be directly switched to the right position to drive the waterway hydraulic motor 128 to rotate and work. The operator can adjust the opening size of the waterway hydraulic proportional speed regulating valve 127 through the knob when performing cleaning work, so as to control the rotation speed of the waterway hydraulic motor 128. The rotation speed of the water pump directly connected with the waterway hydraulic motor 128 can be adjusted, and then the water output size is controlled to adapt to different working conditions, so as to achieve the purposes of convenience, energy saving, and high efficiency.

[0041] The waterway hydraulic electromagnetic reversing valve 123 also has the waterway hydraulic overflow valve 124 stacked thereon, and the set pressure of the waterway hydraulic overflow valve 124 is 100 bar. When the waterway hydraulic system is working, the highest pressure of the waterway hydraulic system can be limited to not exceed the set value to protect the safety of the waterway hydraulic system.

[0042] The waterway hydraulic filter 121 and the waterway hydraulic check valve 122 are also connected in series between the waterway hydraulic pump 0013 and the waterway hydraulic valve block 125. The waterway hydraulic pump 0013 can be protected from hydraulic impact, the circuit of the waterway hydraulic system part 120 is kept clean, and the service life of the hydraulic components is prolonged. The oil return of the waterway hydraulic system part 120 is connected with the radiator 410 through the oil return port of the waterway hydraulic valve block 125 and the pipeline.

[0043] Reference Figure 4, the sweep roller and the sweep roller emergency lifting hydraulic system part 200 includes a sweep roller and the sweep roller emergency lifting hydraulic pump 0011, a sweep roller hydraulic valve group part, a sweep roller emergency lifting hydraulic valve group part, a sweep roller and the sweep roller emergency lifting hydraulic valve block 230, a first sweep roller lifting oil cylinder 2401, a second sweep roller lifting oil cylinder 2402, a sweep roller motor 222. The sweep roller and the sweep roller emergency lifting hydraulic pump 0011 is a large displacement gear pump, and the low pressure oil suction port is connected to the hydraulic oil tank 400 through the first oil suction filter 440, and the high pressure oil discharge port is connected to the sweep roller and the sweep roller emergency lifting hydraulic valve block 230 oil inlet, to provide hydraulic power for the sweep roller and the sweep roller emergency lifting hydraulic system part 200. To ensure the safety of the sweep roller and the sweep roller emergency lifting hydraulic pump 0011, a sweep roller and the sweep roller emergency lifting check valve 250 is connected in series between the sweep roller and the sweep roller emergency lifting hydraulic pump 0011 and the sweep roller and the sweep roller emergency lifting hydraulic valve block 230.

[0044] The sweep roller and the sweep roller emergency lifting hydraulic valve block 230 is stacked with the sweep roller hydraulic valve group part and the sweep roller emergency lifting hydraulic valve group part, and the sweep roller hydraulic valve group part includes a sweep roller electromagnetic reversing valve 220 and a sweep roller double check valve 221. The sweep roller electromagnetic reversing valve 220 is connected to the two oil ports of the sweep roller motor 222 through A2 and B2 ports on the sweep roller and the sweep roller emergency lifting hydraulic valve block 230. The sweep roller electromagnetic reversing valve 220 is a Y-type electromagnetic reversing valve, which switches the emergency lifting electromagnetic reversing valve 210 to the right position when working, so that B1 port is a high pressure oil outlet, and the working pressure is established by energizing the sweep roller emergency lifting hydraulic valve group part. At this time, switching the sweep roller electromagnetic reversing valve 220 to the left or right position can control the forward or reverse rotation of the sweep roller motor 222.

[0045] The sweep roller and the sweep roller emergency lifting hydraulic valve block 230 is also stacked with the sweep roller and the sweep roller emergency lifting hydraulic valve group. The sweep roller emergency lifting hydraulic valve group part includes an emergency lifting electromagnetic reversing valve 210 and an emergency lifting double-way hydraulic control check valve 211. The sweep roller emergency lifting action can be realized by energizing the emergency lifting electromagnetic reversing valve 210.

[0046] The sweep roller and the sweep roller emergency lifting hydraulic valve group is also stacked with a sweep roller and the sweep roller emergency lifting overflow valve 212, which can limit the maximum pressure of the sweep roller and the sweep roller emergency lifting hydraulic system. When the sweep roller is stuck by the sundries and cannot rotate, the sweep roller and the sweep roller emergency lifting hydraulic system can be protected, and the set pressure value is 80 bar. The oil return of the sweep roller and the sweep roller emergency lifting hydraulic system is connected to the radiator 410 through the oil return port of the sweep roller and the sweep roller emergency lifting hydraulic valve block 230 through the pipeline.

[0047] Referring to Figure 5 , Figure 6 and Figure 7The auxiliary hydraulic system part 300 includes an auxiliary hydraulic pump 002, a left side sweeping auxiliary hydraulic system part 310, a right side sweeping auxiliary hydraulic system part 320, and other auxiliary hydraulic system parts 330. The auxiliary hydraulic pump 002 is a fixed displacement gear pump, the low pressure oil suction port of which sucks oil from the hydraulic oil tank 400 through the second oil suction filter 450, and the high pressure oil outlet is divided into three paths, which are connected to the oil inlets of the left side sweeping auxiliary hydraulic system part 310, the right side sweeping auxiliary hydraulic system part 320, and the other auxiliary hydraulic system parts 330, respectively.

[0048] The left side sweeping auxiliary hydraulic system part 310 includes a left front sweeping telescopic oil cylinder 311, a left front sweeping swing arm oil cylinder 312, a left front sweeping down pressure oil cylinder 313, a left rear sweeping swing arm oil cylinder 314, a left rear sweeping down pressure oil cylinder 315, a left side sweeping auxiliary valve block 316, and five left side auxiliary electromagnetic directional valves 318. The five left side auxiliary electromagnetic directional valves 318 are connected to the working oil ports of the left front sweeping telescopic oil cylinder 311, the left front sweeping swing arm oil cylinder 312, the left front sweeping down pressure oil cylinder 313, the left rear sweeping swing arm oil cylinder 314, and the left rear sweeping down pressure oil cylinder 315 through the working oil ports of the left side sweeping auxiliary valve block 316. The preset combination control of the five left side auxiliary electromagnetic directional valves can realize different combination actions of the side sweeping oil cylinder. By controlling the energization of the electromagnetic directional valve 318 corresponding to the left front sweeping swing arm oil cylinder 312, the left front sweeping down pressure oil cylinder 313, and the left rear sweeping down pressure oil cylinder 315, 3.5 m cleaning operation condition can be realized. On this basis, by further controlling the energization of the electromagnetic directional valve 318 corresponding to the left front sweeping telescopic oil cylinder 311 and the left rear sweeping swing arm oil cylinder 314, 4.1 m cleaning operation condition can be further realized.

[0049] The five left side auxiliary electromagnetic directional valves 318 are in the O type function, which can lock the oil cylinder when the oil cylinder is in place, and each of the five left side auxiliary electromagnetic directional valves is separately stacked with a left side auxiliary double one-way throttle valve 317, and the adjustment of the left side auxiliary double one-way throttle valve 317 can adjust the extension and retraction speed of the five left side hydraulic auxiliary oil cylinders. The oil return of the left side auxiliary hydraulic system 310 is connected to the radiator 410 through the oil return port of the left side sweeping auxiliary valve block 316 through the pipeline.

[0050] The right side sweeping auxiliary hydraulic system part 320 includes the same hydraulic components as the left side sweeping auxiliary hydraulic system part, which are symmetrically installed. Its working mode also includes 3.5 m cleaning operation and 4.1 m cleaning operation. The operator can select single left side 3.5 m or 4.1 m cleaning operation, single right side 3.5 m or 4.1 m cleaning operation, and left and right side 3.5 m or 4.1 m full sweeping operation according to the actual working condition.

[0051] The other auxiliary hydraulic system part 330 includes a first tank jacking cylinder 3301, a second tank jacking cylinder 3302, a garbage tank door opening and closing cylinder 3303, a first anti-collision bag lifting cylinder 3304, a second anti-collision bag lifting cylinder 3305, an auxiliary hydraulic valve block 3306 and other auxiliary hydraulic valve groups, the other auxiliary hydraulic valve groups including a tank jacking cylinder electromagnetic reversing valve 3310, a garbage tank door opening and closing cylinder electromagnetic reversing valve 3311, an anti-collision bag lifting cylinder electromagnetic reversing valve 3312, and being respectively connected with the rod cavities and the rodless cavities of the first tank jacking cylinder 3301 and the second tank jacking cylinder 3302, the garbage tank door opening and closing cylinder 3303, the first anti-collision bag lifting cylinder 3304 and the second anti-collision bag lifting cylinder 3305 through the working oil ports of the auxiliary hydraulic valve block 3306. The extension and retraction of the first tank jacking cylinder 3301 and the second tank jacking cylinder 3302, the garbage tank door opening and closing cylinder 3303, the first anti-collision bag lifting cylinder 3304 and the second anti-collision bag lifting cylinder 3305 can be respectively controlled by controlling the power supply of the left and right coils of the tank jacking cylinder electromagnetic reversing valve 3310, the garbage tank door opening and closing cylinder electromagnetic reversing valve 3311 and the anti-collision bag lifting cylinder electromagnetic reversing valve 3312, thereby controlling the lifting of the garbage tank body of the sweeper, the opening and closing of the garbage tank door and the lifting of the anti-collision bag.

[0052] The other auxiliary hydraulic valve group further includes a Y-shaped normal sweeping roller lifting electromagnetic reversing valve 3313 with a neutral function, which is connected to the rodless chambers of the first sweeping roller lifting oil cylinder 2401 and the second sweeping roller lifting oil cylinder 2402 through the auxiliary hydraulic valve block 3306 corresponding working oil port A3 and the single-way valve oil outlet after the working oil port B1 of the sweeping roller and sweeping roller emergency lifting hydraulic valve block 230 through a three-way adapter, and is connected to the rod chambers of the first sweeping roller lifting oil cylinder 2401 and the second sweeping roller lifting oil cylinder 2402 through the auxiliary hydraulic valve block 3306 corresponding working oil port B3 and the working oil port A1 of the sweeping roller and sweeping roller emergency lifting hydraulic valve block 230 through a three-way adapter. The normal sweeping roller lifting electromagnetic reversing valve 3313 is further superimposed with a sweeping roller normal lifting oil cylinder electromagnetic single-way valve 3309. When normal sweeping operation is required, the sweeping roller normal lifting oil cylinder electromagnetic single-way valve 3309 is energized to switch to the left position, and the hydraulic oil can flow in the circuit. By energizing the left or right coil of the sweeping roller normal lifting electromagnetic reversing valve 3313, normal lifting control of the first sweeping roller lifting oil cylinder 2401 and the second sweeping roller lifting oil cylinder 2402 can be achieved, and after the emergency obstacle avoidance action is completed, the sweeping roller can be controlled to descend to continue working. When the valve core of the sweeping roller normal lifting electromagnetic reversing valve 3313 is in the neutral position and the coil of the sweeping roller normal lifting oil cylinder electromagnetic single-way valve 3309 is energized to keep it in the left position, the sweeping roller can freely float up and down with the road surface during sweeping operation, ensuring the safety of hydraulic elements and mechanical structures and improving the service life of hydraulic elements. When the sweeping roller does not need to work and has been completely retracted, the coil of the sweeping roller normal lifting oil cylinder electromagnetic single-way valve 3309 is first de-energized to keep the valve core in the right position, and then the sweeping roller normal lifting electromagnetic reversing valve 3313 is de-energized to keep the valve core in the neutral position, which can lock the first sweeping roller lifting oil cylinder 2401 and the second sweeping roller lifting oil cylinder 2402 to ensure that they do not fall and improve the safety of the whole machine. The emergency lifting bidirectional hydraulic control single-way valve 211 can prevent the control oil of the normal sweeping roller lifting from entering the sweeping roller and sweeping roller emergency lifting hydraulic system part 200.

[0053] The box body jacking oil cylinder electromagnetic reversing valve 3310, the garbage box door opening and closing oil cylinder electromagnetic reversing valve 3311, the anti-collision bag lifting oil cylinder electromagnetic reversing valve 3312 and the sweeping roller normal lifting electromagnetic reversing valve 3313 are further superimposed with one other auxiliary double single-way throttle valve 3308 respectively, which can respectively adjust the extension and retraction speed of the first box body jacking oil cylinder 3301 and the second box body jacking oil cylinder 3302, the garbage box door opening and closing oil cylinder 3303, the first anti-collision bag lifting oil cylinder 3304 and the second anti-collision bag lifting oil cylinder 3305, and further control the lifting speed of the sweeping vehicle garbage box, the opening and closing speed of the garbage box door and the lifting speed of the anti-collision bag.

[0054] The first box jacking cylinder 3301, the second box jacking cylinder 3302, the dustbin door opening and closing cylinder 3303, the first anti-collision bag lifting cylinder 3304 and the second anti-collision bag lifting cylinder 3305 are all provided with double one-way hydraulic locks, which ensure the locking state of the box jacking cylinder, the dustbin door opening and closing cylinder 3303 and the anti-collision bag lifting cylinder when they are not in action, preventing the piston from moving due to external force. The center function Y type of the box jacking cylinder electromagnetic reversing valve 3310, the dustbin door opening and closing cylinder electromagnetic reversing valve 3311 and the anti-collision bag lifting cylinder electromagnetic reversing valve 3312 ensures the working effect of the double one-way hydraulic locks.

[0055] The box jacking cylinder electromagnetic reversing valve 3310 is also stacked with the box jacking cylinder balance valve 3307, which can effectively control the stable contraction of the first box jacking cylinder 3301 and the second box jacking cylinder 3302 under the action of the sweeper dustbin, preventing the action from being out of control due to the change of the load center of gravity during the descent of the sweeper dustbin.

[0056] The other auxiliary hydraulic system part 330 also includes the auxiliary stacked relief valve 301 and the auxiliary stacked unloading valve 302 stacked on the auxiliary hydraulic valve block 3306. The auxiliary stacked unloading valve 302 is a three-position four-way electromagnetic reversing valve with a center function H type. The corresponding working oil port of the auxiliary stacked unloading valve 302 on the other auxiliary hydraulic system part 330 is blocked with a plug, which can realize the unloading of the other auxiliary hydraulic system part 330, enable the auxiliary hydraulic pump 002 to start without load, protect the auxiliary hydraulic pump 002 from hydraulic impact, reduce power consumption when the other auxiliary hydraulic system part 330 is not working, reduce the heating of hydraulic oil and hydraulic elements, and prolong the service life of hydraulic elements. When the other auxiliary hydraulic system part 330 is working, the auxiliary stacked unloading valve 302 is energized to establish pressure, and the auxiliary stacked relief valve 301 limits the maximum working pressure of the other auxiliary hydraulic system part 330 to avoid danger or damage to hydraulic elements caused by excessive pressure. The set pressure is 140 bar.

[0057] The high-pressure oil outlet of the auxiliary hydraulic pump 002 is connected in series with the auxiliary hydraulic filter 340 and the auxiliary hydraulic one-way valve 350, which can protect the auxiliary hydraulic pump 002 from hydraulic impact, keep the water auxiliary hydraulic system circuit clean, and prolong the service life of hydraulic elements. The oil return of the auxiliary stacked relief valve 301 and the oil return of the other auxiliary hydraulic system part 330 are connected in communication with the radiator 410 through the oil return port of the auxiliary hydraulic valve block 3306 through the pipeline.

[0058] In order to filter the hydraulic oil in the circuit, improve the working quality of the hydraulic oil in the system and prolong the service life of the elements, the oil return filter 460 is connected in series between the radiator 410 and the hydraulic oil tank 400.

[0059] The implementation principle of the embodiment of the present application is that the side-scan hydraulic pump 0012 works, the valve core positions of the four side-scan electromagnetic reversing valves 117 are controlled respectively, the forward rotation or reverse rotation of the first side-scan motor 1141, the second side-scan motor 1142, the third side-scan motor 1143 and the fourth side-scan motor 1144 can be controlled, and thus the cleaning operation is performed. The waterway hydraulic pump 0013 works, the valve core of the waterway hydraulic electromagnetic reversing valve 123 is switched to the right position, the waterway hydraulic motor 128 can be driven to rotate, and thus the water pump directly connected with the waterway hydraulic motor 128 can perform the water pumping operation, the opening size of the waterway hydraulic proportional speed regulating valve 127 is adjusted, the rotation speed of the water pump is controlled, and thus the water output size is controlled. The sweeping roller and the sweeping roller emergency lifting hydraulic pump 0011 works, the valve core of the emergency lifting electromagnetic reversing valve 210 is controlled to the left position, the valve core position of the sweeping roller electromagnetic reversing valve 220 is kept in the middle position, the first sweeping roller lifting oil cylinder 2401 and the second sweeping roller lifting oil cylinder 2402 can be quickly lifted within 2s. If the valve core of the emergency lifting electromagnetic reversing valve 210 is controlled to the right position, the valve core position of the sweeping roller electromagnetic reversing valve 220 is switched to the left position or the right position, the forward rotation or reverse rotation of the sweeping roller can be controlled. The auxiliary hydraulic pump 002 works, the related electromagnetic reversing valves in the auxiliary hydraulic system part 300 are controlled, the extension and retraction of each auxiliary oil cylinder are correspondingly controlled, the cleaning mechanism positioning, the garbage can door opening and closing, the garbage can lifting, the sweeping roller lifting and the anti-collision bag lifting during the 3.5m or 4.1m cleaning operation are facilitated and efficient.

[0060] Although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydraulic system for a high speed sweeper-sterilizer truck, comprising: The application relates to a hydraulic system for a side-scan sonar, which comprises a working hydraulic system part (100), a side-scan roller and side-scan roller emergency lifting hydraulic system part (200) and an auxiliary hydraulic system part (300), the working hydraulic system part (100) is communicated with the side-scan roller and side-scan roller emergency lifting hydraulic system part (200) for oil return, the side-scan roller and side-scan roller emergency lifting hydraulic system part (200) is communicated with the auxiliary hydraulic system part (300) for oil return, the oil return outlet of the working hydraulic system part (100) and the oil return outlet of the auxiliary hydraulic system part (300) are connected with a radiator (410), the radiator (410) is respectively communicated with a hydraulic oil tank (400), the working hydraulic system part (100) comprises a side-scan hydraulic pump (0012), a waterway hydraulic pump (0013), a side-scan hydraulic system part (110) and a waterway hydraulic system part (120), the low-pressure oil suction outlets of the side-scan hydraulic pump (0012) and the waterway hydraulic pump (0013) are communicated with each other and then communicated with the hydraulic oil tank (400), the oil outlet of the side-scan hydraulic pump (0012) is communicated with the side-scan hydraulic system part (110), and the oil outlet of the waterway hydraulic pump (0013) is communicated with the waterway hydraulic system part (120); The side-scan hydraulic system part (110) comprises a side-scan filter (111), a side-scan check valve (112), a side-scan overflow valve (113), a side-scan electromagnetic valve group and a side-scan execution assembly, the oil outlet of the side-scan hydraulic pump (0012) is connected in series with the side-scan filter (111) and the side-scan check valve (112) and then divided into two paths, one path is connected with the side-scan overflow valve (113), one end of the side-scan overflow valve (113) is communicated with the oil return outlet of the side-scan electromagnetic valve group and connected with the radiator (410), the radiator (410) is communicated with the hydraulic oil tank (400) through an oil return filter (460), and the other path is communicated with the oil inlet of the side-scan electromagnetic valve group; The side-scan execution assembly comprises a first side-scan motor (1141), a second side-scan motor (1142), a third side-scan motor (1143) and a fourth side-scan motor (1144), the side-scan electromagnetic valve group comprises a side-scan hydraulic valve block (115) and four side-scan electromagnetic directional valves (117), the four side-scan electromagnetic directional valves (117) are respectively connected with the first side-scan motor (1141), the second side-scan motor (1142), the third side-scan motor (1143) and the fourth side-scan motor (1144) through the A and B ports of the side-scan hydraulic valve block (115), and one side-scan motor superimposed type speed regulating valve (116) is separately superimposed on each of the four side-scan electromagnetic directional valves (117). The waterway hydraulic system part (120) comprises a waterway hydraulic filter (121), a waterway hydraulic one-way valve (122), a waterway hydraulic motor (128), a waterway hydraulic electromagnetic valve group and a waterway hydraulic speed regulating valve group, the waterway hydraulic speed regulating valve group comprises a waterway hydraulic proportional speed regulating valve (127) and a rectifier plate (126), the waterway hydraulic proportional speed regulating valve (127) is arranged on the rectifier plate (126), the waterway hydraulic electromagnetic valve group comprises a waterway hydraulic electromagnetic reversing valve (123), a waterway hydraulic overflow valve (124) and a waterway hydraulic valve block (125), a low-pressure oil suction port of the waterway hydraulic pump (0013) is communicated with a hydraulic oil tank (400), an oil outlet of the waterway hydraulic pump (0013) is communicated with an oil inlet of the waterway hydraulic valve block (125) in series with the waterway hydraulic filter (121) and the waterway hydraulic one-way valve (122), the waterway hydraulic electromagnetic reversing valve (123) is communicated with an oil inlet of the waterway hydraulic proportional speed regulating valve (127) through an oil port A of the waterway hydraulic valve block (125), an oil outlet of the waterway hydraulic proportional speed regulating valve (127) is communicated with one oil port of the waterway hydraulic motor (128), another oil port of the waterway hydraulic motor (128) is communicated with a working oil port B of the waterway hydraulic electromagnetic valve group, a drain port of the waterway hydraulic motor (128) is communicated with the hydraulic oil tank (400), and a back oil port of the waterway hydraulic electromagnetic valve group is communicated with a radiator (410).

2. A hydraulic system for a high speed road sweeper according to claim 1, wherein, The sweep roller and sweep roller emergency lifting hydraulic system part (200) comprises a sweep roller and sweep roller emergency lifting hydraulic valve group, a sweep roller and sweep roller emergency lifting hydraulic pump (0011), a sweep roller and sweep roller emergency lifting one-way valve (250), a sweep roller and sweep roller emergency lifting overflow valve (212), a sweep roller and sweep roller emergency lifting hydraulic valve block (230) and a sweep roller and sweep roller emergency lifting actuator, a low-pressure oil suction port of the sweep roller and sweep roller emergency lifting hydraulic pump (0011) is communicated with a hydraulic oil tank (400), a high-pressure oil port of the sweep roller and sweep roller emergency lifting hydraulic pump (0011) is communicated with an oil inlet of the sweep roller and sweep roller emergency lifting hydraulic valve block (230), and the sweep roller and sweep roller emergency lifting hydraulic pump (0011) and the sweep roller and sweep roller emergency lifting hydraulic valve block (230) are connected in series with the sweep roller and sweep roller emergency lifting one-way valve (250); The sweep roller and sweep roller emergency lifting hydraulic valve group comprises a sweep roller hydraulic valve group part and a sweep roller emergency lifting hydraulic valve group part, the sweep roller hydraulic valve group part and the sweep roller emergency lifting hydraulic valve group part are stacked on the sweep roller and sweep roller emergency lifting hydraulic valve block (230), the sweep roller hydraulic valve group part comprises a sweep roller electromagnetic reversing valve (220) and a sweep roller double one-way throttle valve (221), the sweep roller actuator comprises a sweep roller motor (222), the sweep roller electromagnetic reversing valve (220) is communicated with two oil ports of the sweep roller motor (222) through A2 and B2 ports on the sweep roller and sweep roller emergency lifting hydraulic valve block (230), the sweep roller emergency lifting hydraulic valve group part comprises an emergency lifting electromagnetic reversing valve (210) and an emergency lifting double-acting hydraulic control one-way valve (211), and the sweep roller and sweep roller emergency lifting hydraulic valve group further stacks a sweep roller and sweep roller emergency lifting overflow valve (212).

3. A hydraulic system for a high speed road sweeper truck as defined in claim 2 wherein, The auxiliary hydraulic system part (300) comprises an auxiliary hydraulic pump (002), a left sweeping auxiliary hydraulic system part (310), a right sweeping auxiliary hydraulic system part (320), other auxiliary hydraulic system parts (330), an auxiliary hydraulic filter (340) and an auxiliary hydraulic check valve (350). The low-pressure oil suction port of the auxiliary hydraulic pump (002) is communicated with the hydraulic oil tank (400), and the high-pressure oil outlet of the auxiliary hydraulic pump (002) is connected with the oil inlet of the left sweeping auxiliary hydraulic system part (310), the right sweeping auxiliary hydraulic system part (320) and the other auxiliary hydraulic system parts (330) through the auxiliary hydraulic filter (340) and the auxiliary hydraulic check valve (350).

4. A hydraulic system for a high speed road sweeper according to claim 3, wherein, The left sweeping auxiliary hydraulic system part (310) comprises a left front sweeping telescopic oil cylinder (311), a left front sweeping swing arm oil cylinder (312), a left front sweeping down pressure oil cylinder (313), a left rear sweeping swing arm oil cylinder (314), a left rear sweeping down pressure oil cylinder (315) and a left auxiliary electromagnetic valve group. The left auxiliary electromagnetic valve group further comprises five identical left auxiliary electromagnetic directional valves (318) and five identical left auxiliary double check valves (317) and a left sweeping auxiliary valve block (316). The left front sweeping telescopic oil cylinder (311), the left front sweeping swing arm oil cylinder (312), the left front sweeping down pressure oil cylinder (313), the left rear sweeping swing arm oil cylinder (314) and the left rear sweeping down pressure oil cylinder (315) are respectively connected with one left auxiliary electromagnetic directional valve (318) through the working oil port of the left sweeping auxiliary valve block (316), and one left auxiliary double check valve (317) is respectively stacked on the five left auxiliary electromagnetic directional valves (318). The right sweeping auxiliary hydraulic system part (320) comprises a right front sweeping telescopic oil cylinder (321), a right front sweeping swing arm oil cylinder (322), a right front sweeping down pressure oil cylinder (323), a right rear sweeping swing arm oil cylinder (324), a right rear sweeping down pressure oil cylinder (325) and a right auxiliary electromagnetic valve group. The right auxiliary electromagnetic valve group further comprises five identical right auxiliary electromagnetic directional valves (328) and five identical right auxiliary double check valves (327) and a right sweeping auxiliary valve block (326). The right front sweeping telescopic oil cylinder (321), the right front sweeping swing arm oil cylinder (322), the right front sweeping down pressure oil cylinder (323), the right rear sweeping swing arm oil cylinder (324) and the right rear sweeping down pressure oil cylinder (325) are respectively connected with one right auxiliary electromagnetic directional valve (328) through the working oil port of the right sweeping auxiliary valve block (326), and one right auxiliary double check valve (327) is respectively stacked on the five right auxiliary electromagnetic directional valves (328).

5. A hydraulic system for a high speed road sweeper according to claim 4, wherein, The other auxiliary hydraulic system part (330) includes a first tank jacking cylinder (3301), a second tank jacking cylinder (3302), a garbage can door opening and closing cylinder (3303), a first anti-collision bag lifting cylinder (3304), a second anti-collision bag lifting cylinder (3305), an auxiliary hydraulic valve block (3306) and other auxiliary hydraulic valve groups. The working oil ports of the auxiliary hydraulic valve block (3306) are respectively connected with the rod cavities and the rodless cavities of the first tank jacking cylinder (3301) and the second tank jacking cylinder (3302), the garbage can door opening and closing cylinder (3303), the first anti-collision bag lifting cylinder (3304) and the second anti-collision bag lifting cylinder (3305). The other auxiliary hydraulic valve groups include a tank jacking cylinder electromagnetic reversing valve (3310), a garbage can door opening and closing cylinder electromagnetic reversing valve (3311), an anti-collision bag lifting cylinder electromagnetic reversing valve (3312) and a normal lifting electromagnetic reversing valve of a sweeping roller (3313). The tank jacking cylinder electromagnetic reversing valve (3310), the garbage can door opening and closing cylinder electromagnetic reversing valve (3311), the anti-collision bag lifting cylinder electromagnetic reversing valve (3312) and the normal lifting electromagnetic reversing valve of the sweeping roller (3313) are respectively stacked with an other auxiliary double one-way throttling valve (3308). The rod cavities and the rodless cavities of the first tank jacking cylinder (3301) and the second tank jacking cylinder (3302) are respectively connected and then communicated with the tank jacking cylinder electromagnetic reversing valve (3310). The garbage can door opening and closing cylinder (3303) is communicated with the garbage can door opening and closing cylinder electromagnetic reversing valve (3311). The rod cavities and the rodless cavities of the first anti-collision bag lifting cylinder (3304) and the second anti-collision bag lifting cylinder (3305) are respectively connected and then communicated with the anti-collision bag lifting cylinder electromagnetic reversing valve (3312). The rod cavities of the first sweeping roller lifting cylinder (2401) and the second sweeping roller lifting cylinder (2402) are mutually communicated and then simultaneously communicated with the working oil port B of the normal lifting electromagnetic reversing valve of the sweeping roller (3313). The rodless cavities of the first sweeping roller lifting cylinder (2401) and the second sweeping roller lifting cylinder (2402) are mutually communicated and then divided into two paths. One path is communicated with the working oil port A of the normal lifting electromagnetic reversing valve of the sweeping roller (3313). The other path is a series connection of an emergency lifting check valve (213) to the working oil port B of an emergency lifting electromagnetic reversing valve (210).

6. A hydraulic system for a high speed road sweeper truck as defined in claim 5 wherein, The other auxiliary hydraulic system part (330) further includes an auxiliary stacked relief valve (301), an auxiliary stacked unloading valve (302), a tank jacking cylinder balance valve (3307) and a normal lifting electromagnetic check valve of a sweeping roller (3309). The auxiliary stacked relief valve (301) and the auxiliary stacked unloading valve (302) are stacked on the auxiliary hydraulic valve block (3306). The normal lifting electromagnetic check valve of the sweeping roller (3309) is stacked below the normal lifting electromagnetic reversing valve of the sweeping roller (3313). The tank jacking cylinder balance valve (3307) is stacked below the tank jacking cylinder electromagnetic reversing valve (3310).

7. A high speed road sweeper hydraulic system according to claim 6 wherein, The first box jacking oil cylinder (3301), the second box jacking oil cylinder (3302), the dustbin door opening and closing oil cylinder (3303), the first anti-collision bag lifting oil cylinder (3304) and the second anti-collision bag lifting oil cylinder (3305) are all provided with double one-way hydraulic locks.

8. A hydraulic system for a high speed road sweeper truck as defined in claim 7 wherein, The left side sweeping auxiliary hydraulic system part (310), the right side sweeping auxiliary hydraulic system part (320) and the other auxiliary hydraulic system part (330) are interconnected in oil return and connected with the radiator (410).

9. A high speed road sweeper hydraulic system according to claim 8 wherein, The sweeping roller and the sweeping roller emergency lifting hydraulic pump (0011), the side sweeping hydraulic pump (0012) and the waterway hydraulic pump (0013) are three gear pumps (001), the oil suction port of the three gear pumps (001) is communicated with an oil tank and connected with a first oil suction filter (440) and a second oil suction filter (450).

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