CN203384148U - Positive backpressure independent adjusting hydraulic circuit for garbage truck - Google Patents
Positive backpressure independent adjusting hydraulic circuit for garbage truck Download PDFInfo
- Publication number
- CN203384148U CN203384148U CN201320430748.6U CN201320430748U CN203384148U CN 203384148 U CN203384148 U CN 203384148U CN 201320430748 U CN201320430748 U CN 201320430748U CN 203384148 U CN203384148 U CN 203384148U
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- valve
- backpressure
- hydraulic cylinder
- oil hydraulic
- oil
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Abstract
The utility model discloses a positive backpressure independent adjusting hydraulic circuit for a garbage truck. The positive backpressure independent adjusting hydraulic circuit comprises an oil tank, an oil pump, a multiway valve system and a push plate hydraulic cylinder, which form a hydraulic circuit; a backpressure adjusting branch circuit is connected in parallel with a push oil way of the push plate hydraulic cylinder; a throttle valve and a backpressure valve are connected in series with the backpressure adjusting branch circuit. During garbage charging, a push head of a compressor moves to push the garbage in a carriage to be extruded, when the backpressure is greater than a set pressure of the backpressure valve, the backpressure valve is opened, the push plate hydraulic cylinder moves back, after the system pressure drops, the backpressure valve is closed, and the push plate hydraulic cylinder stops moving, so that a piece of manually-driven positioning valve block is eliminated according to the structure of the backpressure valve; during garbage discharging, the throttle valve can enable the system flow rate to be much larger than the maximum through flow amount of the backpressure adjusting branch circuit during out pushing, so that the maximum pressure can meet the utilization requirements of garbage discharging during out pushing.
Description
Technical field
The utility model relates to a kind of oil hydraulic circuit, particularly relates to a kind of positive back pressure independent regulation oil hydraulic circuit for refuse collection vehicle.
Background technique
Refuse collection vehicle is the cram packer used at the supporting trash compactor of garbage compression station.Its push pedal is placed in railway carriage inside, and disposes the push pedal oil hydraulic cylinder.By controlling the flexible of push pedal oil hydraulic cylinder, carried out the effect of two aspects: the first is when filling rubbish, the push pedal oil hydraulic cylinder is set up to certain back pressure, reach further compacting rubbish, rubbish is uniformly distributed, realize large useful load with little volume, thereby solved the non-utilized cargo dead weight problem of refuse collection vehicle for a long time; It two is when rubbish is transported to landfill yard, opens tail-gate, is shirked rubbish.
As shown in Figure 1, at present, in the oil circuit of controlling this push pedal, be provided with the one-way balance valve 6 that can set back pressure pressure.During work, compression system pressure increase along with rubbish, when system pressure reaches the pressure of this one-way balance valve 6, this valve is opened, push pedal oil hydraulic cylinder 4 retreats (push pedal oil hydraulic cylinder 4 another chambeies are by one-way valve 7 oil suctions in multi-way valve), now system pressure descends, and one-way balance valve 6 is closed, 4 stop motions of push pedal oil hydraulic cylinder, along with the compression of rubbish repeats above-mentioned action, thereby rubbish is realized compression under this back pressure.But there are following two problems in it: 1, when rubbish is shirked in refuse landfill, when working pressure reaches the pressure of push pedal oil hydraulic cylinder 4 settings, one-way balance valve 6 is opened, and now the pressure of system can not increase and further improve according to load, therefore there will be the situation of shirking the rubbish difficulty.2, because refuse collection vehicle one-way balance valve 6 is controlled by system pressure, therefore, when using with the supporting trash compactor of garbage compression station, just need to draw from the hydraulic power unit of compressors the open and close that a system pressure is controlled one-way balance valve 6, again due to multi-way valve system 3 when the meta, the oil inlet and oil return road of system is in communicate (can't set up pressure), therefore, while using back pressure, need on multi-way valve system 3, add again a slice manually with the valve block 8 of location.During use, it need to be pulled from meta, otherwise be easy to damage push pedal oil hydraulic cylinder 4.
The model utility content
For addressing the above problem, the utility model provides a kind of and meets rubbish and shirk usage requirement, saves a slice manually with the positive back pressure independent regulation oil hydraulic circuit for refuse collection vehicle of location valve block simultaneously.
The utility model solves the technological scheme that its technical problem adopts: a kind of positive back pressure independent regulation oil hydraulic circuit for refuse collection vehicle, comprise fuel tank, oil pump, multi-way valve system and push pedal oil hydraulic cylinder, fuel tank, oil pump, multi-way valve system and push pedal oil hydraulic cylinder form oil hydraulic circuit, be parallel with the backpressure regulation branch road on the release oil circuit of push pedal oil hydraulic cylinder, be serially connected with throttle valve and back pressure valve on the backpressure regulation branch road.
Be further used as the improvement of technical solutions of the utility model, multi-way valve system comprises that being located at the push pedal oil hydraulic cylinder releases the overload relief valve on oil circuit, the selector valve that is located at the Fill valve on push pedal oil hydraulic cylinder withdrawal oil circuit and controls the hydraulic oil flow direction in oil hydraulic circuit.
Be further used as the improvement of technical solutions of the utility model, the setting pressure of overload relief valve is greater than the setting pressure of back pressure valve.
The beneficial effects of the utility model: this positive back pressure independent regulation oil hydraulic circuit for refuse collection vehicle is when filling rubbish, cutting somebody's hair of compressor moved and advances compartment to be pushed in rubbish, when counterpressure is greater than the setting pressure of back pressure valve, back pressure valve is opened, and the push pedal oil hydraulic cylinder retreats, after system pressure descends, back pressure valve cuts out, the stop motion of push pedal oil hydraulic cylinder, thus when meeting filling rubbish, save a slice by the function of backpressure regulation branch road and manually be with the location valve block; When shirking rubbish, the maximum through-current capacity that throttle valve makes the flow of system can flow through when releasing much larger than the backpressure regulation branch road, therefore, pressure maximum during release can meet the usage requirement that rubbish is shirked.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is the positive back pressure independent regulation hydraulic loop structure schematic diagram of conventional garbage car;
Fig. 2 is the utility model example structure schematic diagram.
Embodiment
With reference to Fig. 1, Fig. 2, the utility model provides a kind of positive back pressure independent regulation oil hydraulic circuit for refuse collection vehicle, it is characterized in that: comprise fuel tank 1, oil pump 2, multi-way valve system 3 and push pedal oil hydraulic cylinder 4, described fuel tank 1, oil pump 2, multi-way valve system 3 and push pedal oil hydraulic cylinder 4 form oil hydraulic circuit, be parallel with backpressure regulation branch road 5 on the release oil circuit of described push pedal oil hydraulic cylinder 4, be serially connected with throttle valve 51 and back pressure valve 52 on described backpressure regulation branch road 5.
This positive back pressure independent regulation oil hydraulic circuit for refuse collection vehicle is when filling rubbish, cutting somebody's hair of compressor moved and advances compartment to be pushed in rubbish, when counterpressure is greater than the setting pressure of back pressure valve 52, back pressure valve 52 is opened, and push pedal oil hydraulic cylinder 4 retreats, after system pressure descends, back pressure valve 52 cuts out, 4 stop motions of push pedal oil hydraulic cylinder, thus when meeting filling rubbish, save a slice by the function of backpressure regulation branch road 5 and manually be with location valve block 8; When in compartment to while shirking rubbish, the maximum through-current capacity that throttle valve 51 makes the flow of system can flow through when releasing much larger than backpressure regulation branch road 5, therefore, pressure maximum during release can reach the set pressure of overload relief valve 31, thereby meet rubbish, shirks usage requirement.
As the utility model preferred embodiment, multi-way valve system 3 comprises that being located at push pedal oil hydraulic cylinder 4 releases overload relief valve 31 on oil circuits, is located at push pedal oil hydraulic cylinder 4 and regains the Fill valve 32 on oil circuits and control the selector valve 33 that in oil hydraulic circuit, hydraulic oil flows to.
As the utility model preferred embodiment, the setting pressure of overload relief valve 31 is greater than the setting pressure of back pressure valve 52.
Working principle is as follows: dispose a Fill valve 32 and an overload relief valve 31 on multi-way valve system 3, Fill valve 32 connects with the rod chamber of push pedal oil hydraulic cylinder 4, overload relief valve 31 is connected with the rodless cavity of push pedal oil hydraulic cylinder 4, and the setting pressure of overload relief valve 31 is higher than the setting pressure of back pressure valve 52.During work, cutting somebody's hair of compressor advances compartment by rubbish, the counterpressure that rubbish overcomes push pedal oil hydraulic cylinder 4 retreats, because the setting pressure of overload relief valve 31 is higher than the setting pressure of back pressure valve 52, the rubbish that at every turn is pressed into compartment only can make push pedal retreat a little simultaneously, therefore, when push pedal oil hydraulic cylinder 4 retreats, hydraulic oil major part in push pedal oil hydraulic cylinder 4 rodless cavities is flowed through after back pressure valve 52 while flowing back to fuel tank 1(temporary impact, can partly from overload relief valve 31, flow through), the rod chamber of the oil hydraulic cylinder of push pedal simultaneously 4 is by Fill valve 32 oil suctions in multi-way valve system 3.When shirking rubbish, due to the maximum through-current capacity that the flow of system can flow through when releasing much larger than the throttling pore of throttle valve 51, therefore, pressure maximum during release can reach the set pressure of overload relief valve 31, satisfied use needs of shirking rubbish.
Certainly, the invention is not limited to above-mentioned mode of execution, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and the modification that these are equal to or replacement all are included in the application's claim limited range.
Claims (3)
1. the positive back pressure independent regulation oil hydraulic circuit for refuse collection vehicle, it is characterized in that: comprise fuel tank, oil pump, multi-way valve system and push pedal oil hydraulic cylinder, described fuel tank, oil pump, multi-way valve system and push pedal oil hydraulic cylinder form oil hydraulic circuit, be parallel with the backpressure regulation branch road on the release oil circuit of described push pedal oil hydraulic cylinder, on described backpressure regulation branch road, be serially connected with throttle valve and back pressure valve.
2. the positive back pressure independent regulation oil hydraulic circuit for refuse collection vehicle according to claim 1 is characterized in that: described multi-way valve system comprises that being located at the push pedal oil hydraulic cylinder releases overload relief valve on oil circuit, is located at the push pedal oil hydraulic cylinder and regains the Fill valve on oil circuit and control the selector valve that in described oil hydraulic circuit, hydraulic oil flows to.
3. the positive back pressure independent regulation oil hydraulic circuit for refuse collection vehicle according to claim 2, it is characterized in that: the setting pressure of described overload relief valve is greater than the setting pressure of described back pressure valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320430748.6U CN203384148U (en) | 2013-07-18 | 2013-07-18 | Positive backpressure independent adjusting hydraulic circuit for garbage truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320430748.6U CN203384148U (en) | 2013-07-18 | 2013-07-18 | Positive backpressure independent adjusting hydraulic circuit for garbage truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203384148U true CN203384148U (en) | 2014-01-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320430748.6U Expired - Lifetime CN203384148U (en) | 2013-07-18 | 2013-07-18 | Positive backpressure independent adjusting hydraulic circuit for garbage truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203384148U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958674A (en) * | 2017-12-25 | 2019-07-02 | 陕西汽车集团有限责任公司 | Compression type garbage truck shoveling back pressure automatic compensation controller and its method |
| CN111283673A (en) * | 2020-02-17 | 2020-06-16 | 广东博智林机器人有限公司 | Hydraulic system and mechanical arm |
-
2013
- 2013-07-18 CN CN201320430748.6U patent/CN203384148U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958674A (en) * | 2017-12-25 | 2019-07-02 | 陕西汽车集团有限责任公司 | Compression type garbage truck shoveling back pressure automatic compensation controller and its method |
| CN109958674B (en) * | 2017-12-25 | 2020-12-29 | 陕西汽车集团有限责任公司 | Automatic compensation control device and method for back pressure of push shovel of compression type garbage truck |
| CN111283673A (en) * | 2020-02-17 | 2020-06-16 | 广东博智林机器人有限公司 | Hydraulic system and mechanical arm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140108 |
|
| CX01 | Expiry of patent term |