Hydraulic control system

Abstract

The utility model relates to a hydraulic control system in the technical field of sweeper trucks, which comprises a main engine and an auxiliary engine, the main engine is connected with a first duplex gear pump, and the first duplex gear pump is respectively connected with a box body control oil way and a water pump control oil way; the auxiliary engine is connected with the second duplex gear pump and the axial plunger variable pump, the second duplex gear pump is connected with the sweeping brush control oil way and the sweeping brush angle oil way, and the axial plunger variable pump is connected with the rolling brush control oil way. The main engine drives the first duplicate gear pump to work, the auxiliary engine drives the second duplicate gear pump and the axial plunger variable pump to work, the sweeping brush control oil way controls sweeping brushes on the two sides of the sweeping vehicle to operate, the sweeping brush angle oil way controls the positions and the adjusting angles of the sweeping brushes on the two sides, and the rolling brush control oil way controls sweeping rollers to sweep below the vehicle. And missing sweeping is reduced.

Description

Technical Field

[0001] This utility model relates to the field of road sweeper technology, and in particular to a hydraulic control system. Background Technology

[0002] Sweeper trucks are a new type of high-efficiency cleaning equipment that integrates road sweeping, garbage collection, and transportation. When a sweeper truck is operating, it sweeps road garbage to the area in front of the suction nozzle through the sweeping disc. As the suction nozzle passes by, the garbage is sucked into the garbage bin by the suction force provided by the fan. The sweeping process usually uses the sweeping disc to sweep the road surface, but the sweeping angle of the sweeping disc creates a cleaning dead angle on the road surface under the vehicle, resulting in missed areas. To address this issue, multiple sweeping rollers were developed under the sweeper truck to clean the area under the sweeper truck. However, the entire sweeper truck requires a corresponding hydraulic system for control.

[0003] Therefore, a hydraulic control system is proposed to address the aforementioned problems. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by developing a hydraulic control system that enables hydraulic control of road sweepers.

[0005] The technical solution of this utility model to solve the technical problem is as follows: a hydraulic control system, including a main engine and an auxiliary engine, the main engine is connected to a first double gear pump, the first double gear pump is connected to the housing control oil circuit and the water pump control oil circuit respectively; the auxiliary engine is connected to a second double gear pump and an axial piston variable pump, the second double gear pump is connected to the brush control oil circuit and the brush angle oil circuit respectively, and the axial piston variable pump is connected to the roller brush control oil circuit.

[0006] The main engine drives the first double gear pump, and the auxiliary engine drives the second double gear pump and the axial piston variable pump. The sweeping brush control oil circuit controls the operation of the sweeping brushes on both sides of the sweeper. The sweeping brush angle oil circuit controls the position and adjustment angle of the sweeping brushes on both sides. The roller brush control oil circuit controls the sweeping roller to sweep under the vehicle to reduce missed areas.

[0007] Preferably, the sweeping brush angle oil circuit includes a first unloading overflow valve, which is connected to a second double gear pump. After the first unloading overflow valve, the sweeping brush angle oil circuit is connected to a first, second, third, fourth, fifth, and sixth electromagnetic directional valve. The first electromagnetic directional valve is connected to the right sweeping brush swing cylinder via a bidirectional hydraulic check valve. The second electromagnetic directional valve is connected to the right sweeping brush lifting cylinder via a bidirectional hydraulic check valve. The third electromagnetic directional valve is connected to the left sweeping brush lifting cylinder via a bidirectional hydraulic check valve. The fourth electromagnetic directional valve is connected to the left sweeping brush swing cylinder via a bidirectional hydraulic check valve. The fifth electromagnetic directional valve is connected to the left sweeping brush cylinder via a bidirectional hydraulic check valve. The sixth electromagnetic directional valve is connected to the right sweeping brush cylinder via a bidirectional hydraulic check valve.

[0008] The sweeping brush angle oil circuit unloads and adjusts the oil circuit pressure through the first unloading overflow valve. The right sweeping brush swing angle oil cylinder controls the angle of the right sweeping brush, the right sweeping brush lifting oil cylinder controls the height of the right sweeping brush, and the right sweeping brush cylinder controls the extension distance of the right sweeping brush. The left sweeping brush lifting oil cylinder controls the height of the left sweeping brush, the left sweeping brush swing angle oil cylinder controls the angle of the left sweeping brush, and the left sweeping brush cylinder controls the extension distance of the left sweeping brush.

[0009] Preferably, the brush control oil circuit includes a brush motor control valve, which is connected to the left brush motor and the right brush motor respectively.

[0010] The left sweeping brush motor drives the left sweeping brush, and the right sweeping brush motor drives the right sweeping brush.

[0011] Preferably, a roller brush motor control valve is installed on the roller brush control oil circuit. The roller brush motor control valve is connected to the front roller brush motor and the rear roller brush motor, and the roller brush motor control valve is also connected to the first water pump motor.

[0012] The roller brush motor control valve controls the operation of the front roller brush motor and the rear roller brush motor, which in turn drives the front roller brush and the rear roller brush to work, while the first water pump motor sprays clean water under the vehicle body.

[0013] Preferably, the housing control oil circuit also includes a second unloading overflow valve, which is connected to the first double gear pump. The housing control oil circuit is connected to the seventh, eighth, ninth, and tenth solenoid directional valves after the second unloading overflow valve. The seventh solenoid directional valve is connected to the housing lifting cylinder through the first balance valve. The eighth solenoid directional valve is connected to the rear door cylinder through the bidirectional hydraulic check valve. The ninth solenoid directional valve is connected to the anti-collision bag lifting cylinder through the second balance valve. The tenth solenoid directional valve is connected to the anti-collision bag locking pin cylinder through the bidirectional hydraulic check valve.

[0014] The container control oil circuit unloads and adjusts the oil circuit pressure through the second unloading overflow valve. The container lifting cylinder drives the container to lift, which facilitates the dumping of garbage inside the container. The rear door cylinder controls the opening and closing of the rear door of the container. The anti-collision bag lifting cylinder controls the position and height of the anti-collision bag. The anti-collision bag locking pin cylinder controls the locking pin to fix the anti-collision bag.

[0015] Preferably, the water pump control oil circuit includes a motor control valve group, and the first double gear pump is connected to the second water pump motor through the motor control valve group.

[0016] The second water pump motor sprays clean water onto both sides of the vehicle body for road cleaning.

[0017] Preferably, the first double gear pump is connected to the oil tank through the first filter, the second double gear pump is connected to the oil tank through the second filter, and the oil tank is also equipped with a third filter connected to the return oil line.

[0018] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0019] The main engine drives the first double gear pump, the auxiliary engine drives the second double gear pump and the axial piston variable pump. The sweeping brush control oil circuit controls the operation of the sweeping brushes on both sides of the sweeper. The sweeping brush angle oil circuit controls the position and adjustment angle of the sweeping brushes on both sides. The roller brush control oil circuit controls the sweeping roller to sweep under the vehicle to reduce missed sweeping.

[0020] The sweeping brush angle oil circuit unloads and adjusts the oil circuit pressure through the first unloading overflow valve. The right sweeping brush swing angle oil cylinder controls the angle of the right sweeping brush, the right sweeping brush lifting oil cylinder controls the height of the right sweeping brush, and the right sweeping brush oil cylinder controls the extension distance of the right sweeping brush. The left sweeping brush lifting oil cylinder controls the height of the left sweeping brush, the left sweeping brush swing angle oil cylinder controls the angle of the left sweeping brush, and the left sweeping brush oil cylinder controls the extension distance of the left sweeping brush.

[0021] The container control oil circuit unloads and adjusts the oil circuit pressure through the second unloading overflow valve. The container lifting cylinder drives the container to lift, which facilitates the dumping of garbage inside the container. The rear door cylinder controls the opening and closing of the rear door of the container. The anti-collision bag lifting cylinder controls the position and height of the anti-collision bag. The anti-collision bag locking pin cylinder controls the locking pin to fix the anti-collision bag. Attached Figure Description

[0022] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a schematic diagram of the oil circuit part of the sweeping brush angle of this utility model.

[0025] Figure 3 This is a schematic diagram of the oil circuit for controlling the sweeping brush of this utility model.

[0026] Figure 4 This is a schematic diagram of the oil circuit for controlling the roller brush in this utility model.

[0027] Figure 5 This is a schematic diagram of the control oil circuit of the housing of this utility model.

[0028] Figure 6 This is a schematic diagram of the water pump control oil circuit of this utility model.

[0029] In the diagram: 1. Main engine; 2. Auxiliary engine; 3. First double gear pump; 4. Second double gear pump; 5. Axial piston variable pump; 6. First unloading relief valve; 7. First solenoid directional valve; 8. Second solenoid directional valve; 9. Third solenoid directional valve; 10. Fourth solenoid directional valve; 11. Fifth solenoid directional valve; 12. Sixth solenoid directional valve; 13. Right sweeping brush tilting cylinder; 14. Right sweeping brush lifting cylinder; 15. Left sweeping brush lifting cylinder; 16. Left sweeping brush tilting cylinder; 17. Left sweeping brush cylinder; 18. Right sweeping brush cylinder; 19. Sweeping brush motor control valve; 20. Left sweeping brush motor; 21. Right sweeping brush. 21. Motor; 22. Roller brush motor control valve; 23. Front roller brush motor; 24. Rear roller brush motor; 25. First water pump motor; 26. Second unloading overflow valve; 27. Seventh solenoid directional valve; 28. Eighth solenoid directional valve; 29. ​​Ninth solenoid directional valve; 30. Tenth solenoid directional valve; 31. First balance valve; 32. Box lifting cylinder; 33. Rear door cylinder; 34. Second balance valve; 35. Anti-collision bag lifting cylinder; 36. Anti-collision bag locking pin cylinder; 37. Motor control valve assembly; 38. Second water pump motor; 39. First filter; 40. Oil tank; 41. Second filter; 42. Third filter. Detailed Implementation

[0030] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present invention omits descriptions of well-known components and processing techniques and processes to avoid unnecessarily limiting the present invention. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] like Figures 1 to 6 As shown, a hydraulic control system includes a main engine 1 and an auxiliary engine 2. The main engine 1 is connected to a first double gear pump 3, which is connected to both a housing control oil circuit and a water pump control oil circuit. The auxiliary engine 2 is connected to a second double gear pump 4 and an axial piston variable pump 5. The second double gear pump 4 is connected to both a sweeping brush control oil circuit and a sweeping brush angle oil circuit. The axial piston variable pump 5 is connected to a roller brush control oil circuit. The main engine 1 drives the first double gear pump 3, and the auxiliary engine 2 drives the second double gear pump 4 and the axial piston variable pump 5. The sweeping brush control oil circuit controls the operation of the sweeping brushes on both sides of the sweeper, the sweeping brush angle oil circuit controls the position and adjustment angle of the sweeping brushes on both sides, and the roller brush control oil circuit controls the sweeping rollers to sweep under the vehicle, reducing missed areas.

[0032] The sweeping brush angle oil circuit includes a first unloading overflow valve 6, which is connected to a second double gear pump 4. After the first unloading overflow valve 6, the sweeping brush angle oil circuit is connected to a first solenoid directional valve 7, a second solenoid directional valve 8, a third solenoid directional valve 9, a fourth solenoid directional valve 10, a fifth solenoid directional valve 11, and a sixth solenoid directional valve 12. The first solenoid directional valve 7 is connected to the right sweeping brush swing cylinder 13 through a bidirectional hydraulic check valve. The second solenoid directional valve 8 is connected to the right sweeping brush lifting cylinder 14 through a bidirectional hydraulic check valve. The third solenoid directional valve 9 is connected to the left sweeping brush lifting cylinder 15 through a bidirectional hydraulic check valve. The fourth solenoid directional valve 10 is connected to the left sweeping brush swing cylinder 16 through a bidirectional hydraulic check valve. The fifth solenoid directional valve 11 is connected to the left sweeping brush cylinder 17 through a bidirectional hydraulic check valve. The sixth solenoid directional valve 12 is connected to the right sweeping brush cylinder 18 through a bidirectional hydraulic check valve. The sweeping brush angle oil circuit unloads and adjusts the oil circuit pressure through the first unloading overflow valve 6. The right sweeping brush swing angle oil cylinder 13 controls the angle of the right sweeping brush, the right sweeping brush lifting oil cylinder 14 controls the height of the right sweeping brush, the right sweeping brush oil cylinder 18 controls the extension distance of the right sweeping brush, the left sweeping brush lifting oil cylinder 15 controls the height of the left sweeping brush, the left sweeping brush swing angle oil cylinder 16 controls the angle of the left sweeping brush, and the left sweeping brush oil cylinder 17 controls the extension distance of the left sweeping brush.

[0033] The sweeping brush control oil circuit includes a sweeping brush motor control valve 19, which is connected to the left sweeping brush motor 20 and the right sweeping brush motor 21. The left sweeping brush motor 20 drives the left sweeping brush, and the right sweeping brush motor 21 drives the right sweeping brush.

[0034] A roller brush motor control valve 22 is installed in the roller brush control oil circuit. The roller brush motor control valve 22 is connected to the front roller brush motor 23 and the rear roller brush motor 24, and is also connected to the first water pump motor 25. The roller brush motor control valve 22 controls the operation of the front roller brush motor 23 and the rear roller brush motor 24, thereby driving the front and rear roller brushes to work. The first water pump motor 25 sprays clean water downwards from the vehicle body.

[0035] The housing control oil circuit also includes a second unloading overflow valve 26, which is connected to the first double gear pump 3. The housing control oil circuit is connected to the seventh solenoid directional valve 27, the eighth solenoid directional valve 28, the ninth solenoid directional valve 29, and the tenth solenoid directional valve 30 after the second unloading overflow valve 26. The seventh solenoid directional valve 27 is connected to the housing lifting cylinder 32 through the first balance valve 31. The eighth solenoid directional valve 28 is connected to the rear door cylinder 33 through the bidirectional hydraulic check valve. The ninth solenoid directional valve 29 is connected to the anti-collision bag lifting cylinder 35 through the second balance valve 34. The tenth solenoid directional valve 30 is connected to the anti-collision bag locking pin cylinder 36 through the bidirectional hydraulic check valve. The container control oil circuit unloads and adjusts the oil circuit pressure through the second unloading overflow valve 26. The container lifting cylinder 32 drives the container to lift, which facilitates the dumping of garbage inside the container. The rear door cylinder 33 controls the opening and closing of the rear door of the container. The anti-collision bag lifting cylinder 35 controls the position and height of the anti-collision bag. The anti-collision bag locking pin cylinder 36 controls the locking pin to fix the anti-collision bag.

[0036] The water pump control circuit includes a motor control valve assembly 37. The first double gear pump 3 is connected to the second water pump motor 38 via the motor control valve assembly 37. The second water pump motor 38 sprays clean water to both sides of the vehicle body for road cleaning.

[0037] The first double gear pump 3 is connected to the oil tank 40 through the first filter 39, and the second double gear pump 4 is connected to the oil tank 40 through the second filter 41. The oil tank 40 is also equipped with a third filter 42 connected to the return oil line.

[0038] Working principle: When cleaning is required, the sweeping brush angle hydraulic circuit is activated. The right sweeping brush swing cylinder 13 controls the angle of the right sweeping brush, the right sweeping brush lifting cylinder 14 controls the height of the right sweeping brush, and the right sweeping brush cylinder 18 controls the extension distance of the right sweeping brush. The left sweeping brush lifting cylinder 15 controls the height of the left sweeping brush, the left sweeping brush swing cylinder 16 controls the angle of the left sweeping brush, and the left sweeping brush cylinder 17 controls the extension distance of the left sweeping brush. The left sweeping brush motor 20 drives the left sweeping brush to work, and the right sweeping brush motor 21 drives the right sweeping brush to work to clean both sides of the vehicle body. The roller brush motor control valve 22 controls the front roller brush motor 23 and the rear roller brush motor 24 to work, thereby driving the front and rear roller brushes to work and clean the lower part of the vehicle body.

[0039] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. A hydraulic control system, characterized in that: It includes a main engine (1) and an auxiliary engine (2), wherein the main engine (1) is connected to a first double gear pump (3), and the first double gear pump (3) is connected to the housing control oil circuit and the water pump control oil circuit respectively; The auxiliary engine (2) is connected to the second double gear pump (4) and the axial piston variable pump (5). The second double gear pump (4) is connected to the brush control oil circuit and the brush angle oil circuit respectively. The axial piston variable pump (5) is connected to the roller brush control oil circuit.

2. A hydraulic control system according to claim 1, characterized in that: The sweeping brush angle oil circuit includes a first unloading overflow valve (6), which is connected to a second double gear pump (4). The sweeping brush angle oil circuit is connected after the first unloading overflow valve (6) to a first electromagnetic directional valve (7), a second electromagnetic directional valve (8), a third electromagnetic directional valve (9), a fourth electromagnetic directional valve (10), a fifth electromagnetic directional valve (11), and a sixth electromagnetic directional valve (12). The first electromagnetic directional valve (7) is connected to the right sweeping brush swing angle cylinder (13) via a bidirectional hydraulic check valve. The second electromagnetic reversing valve (8) is connected to the right sweeping brush lifting cylinder (14) through a bidirectional hydraulic check valve. The third electromagnetic reversing valve (9) is connected to the left sweeping brush lifting cylinder (15) through a bidirectional hydraulic check valve. The fourth electromagnetic reversing valve (10) is connected to the left sweeping brush swing cylinder (16) through a bidirectional hydraulic check valve. The fifth electromagnetic reversing valve (11) is connected to the left sweeping brush cylinder (17) through a bidirectional hydraulic check valve. The sixth electromagnetic reversing valve (12) is connected to the right sweeping brush cylinder (18) through a bidirectional hydraulic check valve.

3. A hydraulic control system according to claim 1, characterized in that: The brush control circuit includes a brush motor control valve (19), which is connected to the left brush motor (20) and the right brush motor (21) respectively.

4. A hydraulic control system according to claim 1, characterized in that: A roller brush motor control valve (22) is provided on the roller brush control oil circuit. The roller brush motor control valve (22) is connected to the front roller brush motor (23) and the rear roller brush motor (24). The roller brush motor control valve (22) is also connected to the first water pump motor (25).

5. A hydraulic control system according to claim 1, characterized in that: The housing control oil circuit also includes a second unloading overflow valve (26), which is connected to the first double gear pump (3). The housing control oil circuit is connected to the seventh electromagnetic reversing valve (27), the eighth electromagnetic reversing valve (28), the ninth electromagnetic reversing valve (29), and the tenth electromagnetic reversing valve (30) after the second unloading overflow valve (26). The seventh electromagnetic reversing valve (27) is connected to the housing lifting cylinder (32) through the first balance valve (31). The eighth electromagnetic reversing valve (28) is connected to the rear door cylinder (33) through the bidirectional hydraulic check valve. The ninth electromagnetic reversing valve (29) is connected to the anti-collision bag lifting cylinder (35) through the second balance valve (34). The tenth electromagnetic reversing valve (30) is connected to the anti-collision bag locking pin cylinder (36) through the bidirectional hydraulic check valve.

6. A hydraulic control system according to claim 1, characterized in that: The water pump control circuit includes a motor control valve group (37), and the first double gear pump (3) is connected to the second water pump motor (38) through the motor control valve group (37).

7. A hydraulic control system according to claim 1, characterized in that: The first double gear pump (3) is connected to the oil tank (40) through the first filter (39), and the second double gear pump (4) is connected to the oil tank (40) through the second filter (41). The oil tank (40) is also provided with a third filter (42) connected to the return oil line.

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