CN205331083U - Cold recycling machine hoisting device's hydraulic system - Google Patents
Cold recycling machine hoisting device's hydraulic system Download PDFInfo
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- CN205331083U CN205331083U CN201521040466.0U CN201521040466U CN205331083U CN 205331083 U CN205331083 U CN 205331083U CN 201521040466 U CN201521040466 U CN 201521040466U CN 205331083 U CN205331083 U CN 205331083U
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Abstract
The utility model provides a cold recycling machine hoisting device's hydraulic system, mainly solved present cold recycling machine hoisting device descend not steady, the problem of the unable normal work of hydraulic pressure lock. This cold recycling machine hoisting device's hydraulic system can mend oil to the no pole chamber of hydro -cylinder owing to add uniform -pressure -drop valve and check valve, has effectively avoided hoisting device because the dead weight of load often causes decompression in the twinkling of an eye in no pole chamber when descending, produces the vacuum, and makes the check valve close, then continue the fuel feeding for the working chamber overpressure reopens and opens the check valve. Because the hydraulic pressure lock takes place to open the closing motion frequently, the hydro -cylinder is creeped when resulting in descending, not steady phenomenon.
Description
Technical field
This utility model relates to the hydraulic system of a kind of cold regenerative machine lifting device, is mainly used in cold regenerative machine lifting device。
Background technology
Cold regenerative machine is a kind of high efficiency, multiduty construction machinery。Can be continuously finished on the spot at natural environment temperature and old asphalt pavement is carried out Spot Cooling milling, broken, mix simultaneously a number of newly gather materials, emulsified asphalt or foamed asphalt, cement, Calx and water, be continuously finished material milling, crush, add, mix and stir, pave, the operation such as leveling, the disposable special equipment realizing old asphalt pavement regeneration。
The lifting device of current cold regenerative machine is when declining, and due to the deadweight of load, often causes instantaneous loss of pressure at rodless cavity, produces vacuum, and make closed check valve, then proceed to fuel feeding so that working chamber pressure rises and is then turned on check valve。Either on or off action occurring continually due to hydraulic lock, and lifting device can be made to produce bigger shock and vibration in the process fallen, when causing declining, oil cylinder is creeped, unstable phenomenon。Meanwhile, lifting device is when rising, and often generation hydraulic lock can not the normally-open phenomenon that cannot rise。The generation of above two problem, comprehensively result in the hydraulic system of current cold regenerative machine lifting device and cannot realize steadily declining at a slow speed and zooming problem。
Therefore, it is badly in need of providing a kind of smooth decreasing, the hydraulic system of the cold regenerative machine lifting device of hydraulic lock normal operation。
Summary of the invention
This utility model provides the hydraulic system of a kind of cold regenerative machine lifting device, mainly solves existing cold regenerative machine lifting device and declines unstable, and hydraulic lock cannot the problem of normal operation。
Concrete technical solution of the present utility model is as follows:
The hydraulic system of this cold regenerative machine lifting device, including N number of hydraulic lock, N is equal to lift cylinder quantity, also includes three-position four-way electromagnetic directional valve, fixed pressure reducing valve, N number of check valve and 2N one-way throttle valve；Hydraulic oil is divided into two-way, and a road hydraulic oil is divided into 2N road, every two-way to be one group after three-position four-way electromagnetic directional valve, and in group, two-way flows to rod chamber and the rodless cavity of a lift cylinder respectively after a hydraulic lock and two one-way throttle valves；Another road hydraulic oil is divided into N road after fixed pressure reducing valve and flows into the rodless cavity of each lift cylinder。
The hydraulic system of general cold regenerative machine lifting device includes two lift cylinders, and namely N is 2, but the hydraulic system that this utility model provides is not limited to 2 lift cylinders, and can be applicable to multiple lift cylinders according to different operating modes；The quantity of lift cylinder and three-position four-way electromagnetic directional valve, the quantity of fixed pressure reducing valve is unrelated, namely the output of three-position four-way electromagnetic directional valve is divided into two classes, one class is for providing hydraulic oil to rod chamber, another kind of for providing hydraulic oil to rodless cavity, according to the quantity of lift cylinder, above two type can be carried out matching branch, fixed pressure reducing valve is identical with the quantitative requirement of three-position four-way electromagnetic directional valve, the output of fixed pressure reducing valve is only rodless cavity and provides hydraulic oil, its branch also only needs to meet to be delivered in the rodless cavity of each lift cylinder by the hydraulic oil of output。
The rodless cavity of described lift cylinder is connected with system by the pipe joint with throttle orifice。
The utility model has the advantage of:
The hydraulic system of this cold regenerative machine lifting device is owing to being additionally arranged uniform-pressure-drop valve and check valve, can to the rodless cavity repairing of oil cylinder, effectively prevent lifting device when declining due to the deadweight of load, often cause instantaneous loss of pressure at rodless cavity, produce vacuum, and make closed check valve, then proceed to fuel feeding so that working chamber pressure rises and is then turned on check valve。Either on or off action occurs continually due to hydraulic lock, and when causing declining, oil cylinder is creeped, unstable phenomenon。
The hydraulic system of this cold regenerative machine lifting device can effectively control the decrease speed of lifting device by regulating the flow of one-way throttle valve, is conducive to the unlatching of hydraulic lock, the problem that before solving, hydraulic lock often cannot be opened。
The rodless cavity of lift cylinder is connected with system by the pipe joint with throttle orifice can realize lifting device rapid increase。
The hydraulic system of this cold regenerative machine lifting device can realize lifting device descending at slow speed, rapid increase。
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
Accompanying drawing is detailed as follows: 1-three-position four-way electromagnetic directional valve；2-hydraulic lock；3-one-way throttle valve；Lift cylinder on the left of 4-；5-check valve；Lift cylinder on the right side of 6-；7-fixed pressure reducing valve。
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is described in detail:
This lifting device hydraulic system for lifting includes 5, two, 7, two hydraulic lock of 1, fixed pressure reducing valve of a three-position four-way electromagnetic directional valve, 3, two check valves of 2, four one-way throttle valves with the pipe joint of throttle orifice, left side lift cylinder 4 and right side lift cylinder 6；
The hydraulic oil of system divides two-way, one tunnel connects the oil-in of a three-position four-way electromagnetic directional valve 1, oil-out A, B of three position four-way directional control valve 1 connect the oil-in of two hydraulic lock respectively, the outlet of each hydraulic lock 2 connects an one-way throttle valve 3 respectively, and one-way throttle valve 3B1 outlet connects the rod chamber of left side lift cylinder 4 and right side lift cylinder 6 respectively。One-way throttle valve 3A1 outlet connects the rodless cavity of left side lift cylinder 4 and right side lift cylinder 6 respectively。
Another road hydraulic oil connects a fixed pressure reducing valve 7, and fixed pressure reducing valve 7 exports the rodless cavity being connect left and right side lift cylinder by two check valves 5 respectively。The rodless cavity of lift cylinder is connected with system by the pipe joint with throttle orifice。
Owing to have employed technique scheme, it is ensured that lifting device, downslide will not occur because of external causes such as deadweights, exceed the speed limit or vibration, and the speed that lifting device rises, declines can be controlled, and be effectively improved the stationarity that lifting device declines。
Claims (3)
1. a hydraulic system for cold regenerative machine lifting device, including N number of hydraulic lock, N is equal to lift cylinder quantity, it is characterised in that: also include three-position four-way electromagnetic directional valve, fixed pressure reducing valve, N number of check valve and 2N one-way throttle valve；Hydraulic oil is divided into two-way, and a road hydraulic oil is divided into 2N road, every two-way to be one group after three-position four-way electromagnetic directional valve, and in group, two-way flows to rod chamber and the rodless cavity of a lift cylinder respectively after a hydraulic lock and two one-way throttle valves；Another road hydraulic oil is divided into N road after fixed pressure reducing valve and flows into the rodless cavity of each lift cylinder。
2. the hydraulic system of cold regenerative machine lifting device according to claim 1, it is characterized in that: described N is 2, namely the hydraulic system of cold regenerative machine lifting device includes two hydraulic lock, a three-position four-way electromagnetic directional valve, a fixed pressure reducing valve, two check valves and four one-way throttle valves；Hydraulic oil is divided into two-way, one road hydraulic oil is divided into four tunnels after three-position four-way electromagnetic directional valve, every two-way be one group for controlling a lift cylinder, in group, two-way flows to respectively after a hydraulic lock and two one-way throttle valves and is controlled rod chamber and the rodless cavity of lift cylinder, arranges an one-way throttle valve on the way；Another road hydraulic oil is divided into two-way after fixed pressure reducing valve and flows into the rodless cavity of each lift cylinder。
3. the hydraulic system of cold regenerative machine lifting device according to claim 1 and 2, it is characterised in that: the rodless cavity of described lift cylinder is connected with system by the pipe joint with throttle orifice。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521040466.0U CN205331083U (en) | 2015-12-12 | 2015-12-12 | Cold recycling machine hoisting device's hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521040466.0U CN205331083U (en) | 2015-12-12 | 2015-12-12 | Cold recycling machine hoisting device's hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205331083U true CN205331083U (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521040466.0U Active CN205331083U (en) | 2015-12-12 | 2015-12-12 | Cold recycling machine hoisting device's hydraulic system |
Country Status (1)
| Country | Link |
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| CN (1) | CN205331083U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762884A (en) * | 2017-03-13 | 2017-05-31 | 浙江大学 | Based on the vertical tuning hydraulic systems of pressure compensated TBM |
| CN111530699A (en) * | 2020-05-08 | 2020-08-14 | 济南悉通液压设备配套有限公司 | Rectification hydraulic system for butyl rubber coating machine and integrated valve block thereof |
-
2015
- 2015-12-12 CN CN201521040466.0U patent/CN205331083U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762884A (en) * | 2017-03-13 | 2017-05-31 | 浙江大学 | Based on the vertical tuning hydraulic systems of pressure compensated TBM |
| CN111530699A (en) * | 2020-05-08 | 2020-08-14 | 济南悉通液压设备配套有限公司 | Rectification hydraulic system for butyl rubber coating machine and integrated valve block thereof |
| CN111530699B (en) * | 2020-05-08 | 2021-04-09 | 济南悉通液压设备配套有限公司 | Rectification hydraulic system for butyl rubber coating machine and integrated valve block thereof |
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| GR01 | Patent grant |