CN213331830U - Hydraulic system capable of adjusting ground contact pressure of suction and sweeping device - Google Patents
Hydraulic system capable of adjusting ground contact pressure of suction and sweeping device Download PDFInfo
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- CN213331830U CN213331830U CN202022039372.9U CN202022039372U CN213331830U CN 213331830 U CN213331830 U CN 213331830U CN 202022039372 U CN202022039372 U CN 202022039372U CN 213331830 U CN213331830 U CN 213331830U
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Abstract
The invention relates to a hydraulic system capable of adjusting the ground contact pressure of a suction and sweeping device, and belongs to the technical field of environmental sanitation machinery. The invention comprises a hydraulic oil tank, a filter, a hydraulic pump and a one-way valve which are connected in sequence, wherein an outlet of the one-way valve is respectively connected with an electromagnetic pressure relief valve, a first electric proportional pressure reducing valve, a first electromagnetic directional valve, a second electric proportional pressure reducing valve and a second electromagnetic directional valve, the first electric proportional pressure reducing valve, the first electromagnetic directional valve and the first electromagnetic seat valve are connected with a rod cavity of a lifting oil cylinder of a sweeping device, and the second electric proportional pressure reducing valve, the second electromagnetic directional valve and the second electromagnetic seat valve are connected with a rod cavity of a lifting oil cylinder of a sucker device. The electric proportional pressure reducing valve forms a certain back pressure in a rod cavity of the oil cylinder, an upward force is formed on the suction and sweeping device, a certain ground contact pressure is reduced, the ground contact pressure of the suction and sweeping device is adjusted by changing the current of a coil of the electric proportional pressure reducing valve, the larger the current is, the smaller the ground contact pressure of the suction and sweeping device is, the service life of the device is prolonged, and the operation performance of the cleaning device is enhanced.
Description
Technical Field
The invention relates to a hydraulic system capable of adjusting the ground contact pressure of a suction and sweeping device, and belongs to the technical field of environmental sanitation machinery. .
Background
Along with the development of urbanization in China, the road cleaning also gradually meets the requirements of mechanized operation. At present, urban road cleaning operation is mainly completed by a washing and sweeping vehicle and a sweeping vehicle, but the existing suction and sweeping device has the following defects: the brush hair in the brushing device and the roller in the sucker device are abraded quickly, the service life is short, frequent replacement is needed, and the working efficiency is affected. The ground contact pressure of the sweeper cannot be adjusted according to the actual working road condition, and the ground contact pressure of the sweeper is small in a clean road section so as to avoid excessive abrasion of the sweeper; when the road is in a dirty road section, the pressure of the sweeping brush on the ground is large, so that the road surface can be swept more cleanly. In order to solve the above-mentioned problems and defects, prolong the service life of the working device and enhance the working performance of the cleaning device, it is necessary to provide a hydraulic control system capable of adjusting the ground contact pressure.
Disclosure of Invention
The invention aims to provide a hydraulic control system which prolongs the service life and enhances the operation performance of a cleaning device aiming at the defects of the prior art.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows: the utility model provides an adjustable hydraulic system who inhales pressure of sweeping device to earth, includes consecutive hydraulic tank, filter, hydraulic pump and check valve, the export of check valve is connected with electromagnetic relief valve, first electric proportional pressure reducing valve, first electromagnetic directional valve, second electric proportional pressure reducing valve and second electromagnetic directional valve respectively, first electric proportional pressure reducing valve, first electromagnetic directional valve and first electromagnetic base valve are connected the pole chamber that has of brush device lift cylinder, second electric proportional pressure reducing valve, second electromagnetic directional valve and second electromagnetic base valve are connected the pole chamber that has of sucking disc device lift cylinder.
The scheme is further improved in that: the hydraulic pump is driven by an electric motor.
The scheme is further improved in that: and the inlet and the outlet of the hydraulic pump are connected with overflow valves.
The invention has the beneficial effects that: the size of the ground contact pressure of the suction sweeping device is adjusted by changing the size of the coil current of the electric proportional pressure reducing valve, and the larger the current is, the smaller the ground contact pressure of the suction sweeping device is; the service life of the device can be prolonged, and the operation performance of the cleaning device is enhanced.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
the examples in the figure are:
the device comprises a hydraulic oil tank 1, a filter 2, a motor 3, a hydraulic pump 4, a one-way valve 5, an electromagnetic pressure relief valve 6, a first electric proportional pressure reducing valve 7, a first electromagnetic directional valve 8, a first electromagnetic seat valve 9, a sweeper device lifting oil cylinder 10, a second electric proportional pressure reducing valve 11, a second electromagnetic directional valve 12, a second electromagnetic seat valve 13, a sucker device lifting oil cylinder 14 and an overflow valve 15.
Detailed Description
The hydraulic system for adjusting the ground contact pressure of the suction sweeping device according to the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.
Examples
As shown in fig. 1, a hydraulic system capable of adjusting the ground contact pressure of a suction and sweeping device comprises a hydraulic oil tank 1, a filter 2, a hydraulic pump 4 and a check valve 5 which are connected in sequence, wherein an outlet of the check valve 5 is respectively connected with an electromagnetic pressure relief valve 6, a first electric proportional pressure reducing valve 7, a first electromagnetic directional valve 8, a second electric proportional pressure reducing valve 11 and a second electromagnetic directional valve 12, the first electric proportional pressure reducing valve 7, the first electromagnetic directional valve 8 and a first electromagnetic seat valve 9 are connected with a rod cavity of a lifting oil cylinder 10 of the suction and sweeping device, and the second electric proportional pressure reducing valve 11, the second electromagnetic directional valve 12 and a second electromagnetic seat valve 13 are connected with a rod cavity of a lifting oil cylinder 14 of the suction and sweeping device.
The hydraulic pump 4 is driven by the electric motor 1.
In the initial state, the coil of the electromagnetic pressure relief valve 6 is not electrified, the port I and the port II of the electromagnetic pressure relief valve 6 are connected, and hydraulic oil returns to the hydraulic oil tank 1 through the electromagnetic pressure relief valve 6.
When the sweeper works, the electromagnetic pressure relief valve 6 is electrified, and the port I and the port II of the electromagnetic pressure relief valve 6 are disconnected; a coil of the first electric proportional pressure reducing valve 7 is electrified, the valve core is positioned on the left side, and a port I and a port III of the electric proportional pressure reducing valve 7 are connected; the coil of the first electromagnetic directional valve 8 is not electrified, the valve core is positioned at the right side under the action of the spring, and the second port and the third port of the first electromagnetic directional valve 8 are connected; the coil of the first electromagnetic seat valve 9 is electrified, the valve core is positioned at the right side, and the port I and the port II of the first electromagnetic seat valve 9 are connected. At this time, the outlet pressure of the third port of the first electric proportional pressure reducing valve 7 is changed in proportion to the change of the coil current, so that the ground contact pressure of the sweeping device is adjusted.
When the sucker device works, the coil of the electromagnetic pressure relief valve 6 is electrified, the valve core is positioned on the left side, and the port I and the port II of the electromagnetic pressure relief valve 6 are disconnected; a coil of the second electric proportional pressure reducing valve 11 is electrified, the valve core is positioned on the left side, and a port I of the second electric proportional pressure reducing valve 11 is connected with a port III; the coil of the second electromagnetic directional valve 12 is not electrified, the valve core is positioned at the right side under the action of the spring, and the second port and the third port of the second electromagnetic directional valve 12 are connected; the coil of the second electromagnetic seat valve 13 is electrified, the valve core is positioned on the right side, and the port I of the second electromagnetic seat valve 13 is connected with the port II. At this time, the outlet pressure of the third port of the second electro-proportional pressure reducing valve 11 is changed in proportion to the change of the magnitude of the coil current, thereby adjusting the magnitude of the ground contact pressure of the suction cup device.
The larger the coil current of the first and second electro-proportional pressure reducing valves 7 and 11 is, the larger the outlet pressure of the valves is, and at this time, the smaller the ground contact pressure of the wiper device and the suction cup device is.
When the sweeping device needs to be lifted, a coil of the electromagnetic pressure relief valve 6 is electrified, the valve core is positioned on the left side, and a port I and a port II of the electromagnetic pressure relief valve 6 are disconnected; the coil of the first electric proportional pressure reducing valve 7 is not electrified, the valve core is positioned on the right side, and the port I of the first electric proportional pressure reducing valve 7 is cut off; the coil of the first electromagnetic directional valve 8 is electrified, the valve core is positioned on the left side, and the port I of the first electromagnetic directional valve 8 is connected with the port III; the coil of the first electromagnetic seat valve 9 is electrified, the valve core is positioned at the right side, and the port I and the port II of the first electromagnetic seat valve 9 are connected. At the moment, hydraulic oil passes through the first electromagnetic directional valve 8 and the first electromagnetic seat valve 9 and reaches a rod cavity of the sweeper lifting oil cylinder 10, the oil cylinder is shortened, and the sweeper device is lifted.
When the sucker device needs to be lifted, a coil of the electromagnetic pressure relief valve 6 is electrified, the valve core is positioned on the left side, and a port I and a port II of the electromagnetic pressure relief valve 6 are disconnected; the coil of the second electric proportional pressure reducing valve 11 is not electrified, the valve core is positioned on the right side, and the port I of the second electric proportional pressure reducing valve 11 is cut off; the coil of the second electromagnetic directional valve 12 is electrified, the valve core is positioned on the left side, and the port I of the second electromagnetic directional valve 12 is connected with the port III; the coil of the second electromagnetic seat valve 13 is electrified, the valve core is positioned on the right side, and the port I of the second electromagnetic seat valve 13 is connected with the port II. At this time, the hydraulic oil passes through the second electromagnetic directional valve 12 and the second electromagnetic seat valve 13 to the rod cavity of the suction cup lifting oil cylinder 14, the oil cylinder is shortened, and the suction cup device is lifted.
After the operation is finished, on the way of return or during operation transition, after the sweeping device and the sucker device are lifted, all the electromagnetic valves are powered off, the first electromagnetic seat valve 9 and the second electromagnetic seat valve 10 are under the action of the springs, and the valve cores are positioned on the left side, so that hydraulic oil in the sweeping lifting oil cylinder and the sucker lifting oil cylinder is locked, a certain pressure is kept, the floating and shaking of the sweeping device in the driving process can be prevented, and the operation device and the vehicle are effectively protected from driving safety.
When the coil of the first electromagnetic seat valve 9 is electrified and the coils of the first electric proportional pressure reducing valve 7 and the first reversing valve 8 are not electrified, the rod cavity of the sweeper lifting oil cylinder 10 is directly connected with the hydraulic oil tank 1, and the ground contact pressure of the sweeper device is the maximum; similarly, when the coil of the second electromagnetic seat valve 13 is electrified and the coils of the second electro-proportional pressure reducing valve 11 and the second reversing valve 12 are not electrified, the rod cavity of the suction cup lifting cylinder 14 is directly connected with the hydraulic oil tank 1, and the ground contact pressure of the suction cup device is maximum.
The present invention is not limited to the specific technical solutions of the above embodiments, and other embodiments of the present invention are possible in addition to the above embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (3)
1. The utility model provides a hydraulic system of pressure that touches ground of adjustable suction device, its characterized in that: including consecutive hydraulic tank, filter, hydraulic pump and check valve, the export of check valve is connected with electromagnetic relief valve, first electric proportional pressure reducing valve, first electromagnetic directional valve, second electric proportional pressure reducing valve and second electromagnetic directional valve respectively, first electric proportional pressure reducing valve, first electromagnetic directional valve and first electromagnetic seat valve are connected and are brushed the pole chamber that has of device lift cylinder, second electric proportional pressure reducing valve, second electromagnetic directional valve and second electromagnetic seat valve are connected and are had the pole chamber of sucking disc device lift cylinder.
2. The hydraulic system for adjusting ground contact pressure of a suction sweeper of claim 1, wherein: the hydraulic pump is driven by an electric motor.
3. The hydraulic system for adjusting ground contact pressure of a suction sweeper of claim 1, wherein: and the inlet and the outlet of the hydraulic pump are connected with overflow valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022039372.9U CN213331830U (en) | 2020-09-17 | 2020-09-17 | Hydraulic system capable of adjusting ground contact pressure of suction and sweeping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022039372.9U CN213331830U (en) | 2020-09-17 | 2020-09-17 | Hydraulic system capable of adjusting ground contact pressure of suction and sweeping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213331830U true CN213331830U (en) | 2021-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022039372.9U Active CN213331830U (en) | 2020-09-17 | 2020-09-17 | Hydraulic system capable of adjusting ground contact pressure of suction and sweeping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213331830U (en) |
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2020
- 2020-09-17 CN CN202022039372.9U patent/CN213331830U/en active Active
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