CN103132436A - Hydraulic system for lifting paver screed plate - Google Patents
Hydraulic system for lifting paver screed plate Download PDFInfo
- Publication number
- CN103132436A CN103132436A CN 201110377702 CN201110377702A CN103132436A CN 103132436 A CN103132436 A CN 103132436A CN 201110377702 CN201110377702 CN 201110377702 CN 201110377702 A CN201110377702 A CN 201110377702A CN 103132436 A CN103132436 A CN 103132436A
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- pipeline
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- valve
- electronic
- lift cylinder
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- 238000013016 damping Methods 0.000 claims description 15
- 239000002828 fuel tank Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 description 5
- 230000001737 promoting effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention discloses a hydraulic system for lifting a paver screed plate. The hydraulic system is characterized in that the hydraulic system comprises a valve block; one end of a pipe 1 is communicated with a main oil inlet P of the valve block and the other end of the pipe 1 is communicated with an oil inlet P1 of a lifting magnetic valve; one end of a pipe 2 is communicated with a main oil return opening T of the valve block and the other end of the pipe 2 is communicated with an oil return opening T1 of the lifting magnetic valve; one end of a pipe 3 is communicated with an oil outlet A1 of the lifting magnetic valve and the other end of the pipe 3 is communicated with one end of a pipe 4 and one end of a pipe 5; the other end of the pipe 4 is communicated with a rod-free chamber of a lifting oil cylinder 1; the other end of the pipe 5 is communicated with a rod-free chamber of a lifting oil cylinder 2; one end of a pipe 6 is communicated with an oil outlet B1 of the lifting magnetic valve and the other end of the pipe 6 is communicated with one end of a pipe 7 and one end of a pipe 8; the other end of the pipe 7 is communicated with a rod chamber of the lifting oil cylinder 1; and the other end of the pipe 8 is communicated with a rod chamber of the lifting oil cylinder 2. The hydraulic system has the advantages of simple structure, reliable performances, low production cost and high efficiency.
Description
Technical field
The present invention relates to a kind of hydraulic system, particularly relate to a kind of hydraulic system promoted for paver screed.
Background technology
It is of a great variety that paver screed promotes hydraulic means at present, control valve group structural redundancy complexity and cost are high, exist the throttle orifice position unreasonable more, cause system reliability low, time response is slow, have a strong impact on the performance of auto leveling system of paver, irrational throttle orifice position causes lift cylinder high pressure grade to bring unnecessary cost to increase.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency of the prior art, a kind of hydraulic system promoted for paver screed is provided.This hydraulic system structure is simple, dependable performance, cost of production is low, efficiency is high, is convenient to promote the use of.
For achieving the above object, the technical solution used in the present invention is: the hydraulic system promoted for paver screed, it is characterized in that: comprise electronic one way valve one, electronic one way valve two, electronic one way valve three, electronic one way valve four, lift cylinder one and lift cylinder two and the valve piece be communicated with fuel tank, be provided with in described valve piece and promote electromagnetic valve, pipeline one and pipeline two, one end of described pipeline one is communicated with valve piece master oil inlet P, the other end of described pipeline one and the oil inlet P that promotes electromagnetic valve
1be communicated with, an end of described pipeline two is communicated with valve piece master oil return inlet T, the other end of described pipeline two and the oil return inlet T that promotes electromagnetic valve
1be communicated with, described lifting electromagnetic valve is connected with pipeline three, an end of described pipeline three and the oil-out A that promotes electromagnetic valve
1be communicated with, the other end of described pipeline three is communicated with an end of pipeline parallel with one another four and pipeline five, the other end of described pipeline four is communicated with the rodless cavity of lift cylinder one by electronic one way valve one, the other end of described pipeline five is communicated with the rodless cavity of lift cylinder two by electronic one way valve three, described lifting electromagnetic valve is connected with pipeline six, an end of described pipeline six and the oil-out B that promotes electromagnetic valve
1be communicated with, the other end of described pipeline six is communicated with an end of pipeline parallel with one another seven and pipeline eight, the other end of pipeline seven is communicated with the rod chamber of lift cylinder one by electronic one way valve two, and the other end of described pipeline eight is communicated with the rod chamber of lift cylinder two by electronic one way valve four.
The above-mentioned hydraulic system promoted for paver screed, is characterized in that: on described pipeline six, the damping electromagnetic valve is installed, the oil return inlet T of described damping electromagnetic valve
2by pipeline nine, with valve piece master oil return inlet T, be communicated with.
The above-mentioned hydraulic system promoted for paver screed is characterized in that: described valve piece master oil inlet P is communicated with valve piece master oil return inlet T by pipeline ten, on described pipeline ten, vacuum solenoid valve is installed.
The above-mentioned hydraulic system promoted for paver screed, is characterized in that: on described pipeline ten, the overflow valve be in series with vacuum solenoid valve is installed.
The above-mentioned hydraulic system promoted for paver screed, is characterized in that: on described pipeline nine, the throttling joint is installed.
The present invention compared with prior art has the following advantages:
1, of the present invention simple in structure, rationally novel in design, be easy to install.
2, the present invention uses more convenient, effectively reduced the response time of Automatic Levelling, the back pressure that screed produces 4-5MPa by the oil return of damping solenoid control by the throttling joint while descending makes the screed smooth decreasing, and it is steady that the impact that the very stable back pressure of thin-wall hole generation on the throttling joint is changed by hydraulic fluid temperature has hardly effectively guaranteed that screed descends.
3, of the present inventionly realize that cost is low, result of use is good, is convenient to promote the use of.
In sum, the present invention is simple in structure, and novel in design rationally functional reliability is high, long service life, and this hydraulic system structure is simple, dependable performance, cost of production is low, efficiency is high, is convenient to promote the use of.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Description of reference numerals:
1-promotes electromagnetic valve; 2-pipeline one; The 3-vacuum solenoid valve;
4-pipeline ten; The 5-overflow valve; 6-pipeline two;
7-pipeline nine; 8-throttling joint; 9-damping electromagnetic valve;
10-pipeline six; 11-pipeline five; The electronic one way valve four of 12-;
13-lift cylinder two; The electronic one way valve three of 14-; 15-pipeline eight;
16-pipeline seven; The electronic one way valve two of 17-; 18-lift cylinder one;
The electronic one way valve one of 19-; 20-pipeline four; 21-pipeline three.
The specific embodiment
A kind of hydraulic system promoted for paver screed as shown in Figure 1, comprise electronic one way valve 1, electronic one way valve 2 17, electronic one way valve 3 14, electronic one way valve 4 12, lift cylinder 1 and lift cylinder 2 13 and the valve piece be communicated with fuel tank, be provided with in described valve piece and promote electromagnetic valve 1, pipeline 1 and pipeline 26, one end of described pipeline 1 is communicated with valve piece master oil inlet P, the other end of described pipeline 1 and the oil inlet P that promotes electromagnetic valve 1
1be communicated with, an end of described pipeline 26 is communicated with valve piece master oil return inlet T, the other end of described pipeline 26 and the oil return inlet T that promotes electromagnetic valve 1
1be communicated with, described lifting electromagnetic valve 1 is connected with pipeline 3 21, an end of described pipeline 3 21 and the oil-out A that promotes electromagnetic valve 1
1be communicated with, the other end of described pipeline 3 21 is communicated with an end of pipeline parallel with one another 4 20 and pipeline 5 11, the other end of described pipeline 4 20 is communicated with the rodless cavity of lift cylinder 1 by electronic one way valve 1, the other end of described pipeline 5 11 is communicated with the rodless cavity of lift cylinder 2 13 by electronic one way valve 3 14, described lifting electromagnetic valve 1 is connected with pipeline 6 10, an end of described pipeline 6 10 and the oil-out B that promotes electromagnetic valve 1
1be communicated with, the other end of described pipeline 6 10 is communicated with an end of pipeline parallel with one another 7 16 and pipeline 8 15, the other end of pipeline 7 16 is communicated with the rod chamber of lift cylinder 1 by electronic one way valve 2 17, and the other end of described pipeline 8 15 is communicated with the rod chamber of lift cylinder 2 13 by electronic one way valve 4 12.
As shown in Figure 1, on described pipeline 6 10, damping electromagnetic valve 9 is installed, the oil inlet P of described damping electromagnetic valve 9
2with its oil-out A
2be communicated with the oil return inlet T of described damping electromagnetic valve 9
2by pipeline 97, with valve piece master oil return inlet T, be communicated with.
As shown in Figure 1, described valve piece master oil inlet P is communicated with valve piece master oil return inlet T by pipeline 10, on described pipeline 10, vacuum solenoid valve 3 is installed.The overflow valve 5 be in series with vacuum solenoid valve 3 is installed on described pipeline 10.On described pipeline 97, throttling joint 8 is installed.
During use, when paver paves under operating mode normal floating, vacuum solenoid valve 3, promote electromagnetic valve 1 and damping electromagnetic valve 9 no powers, electronic one way valve 1, electronic one way valve 2 17, electronic one way valve 3 14 and electronic one way valve 4 12 are all switched on, now each electronic one way valve is two-way admittance, the rod chamber of lift cylinder 1 and lift cylinder 2 13 is communicated with pipeline 6 10 by pipeline 7 16 and pipeline 8 15 respectively, the rodless cavity of lift cylinder 1 and lift cylinder 2 13 is communicated with pipeline 3 21 by pipeline 4 20 and pipeline 5 11 respectively, pipeline 6 10 and pipeline 3 21 all are communicated with fuel tank by the valve piece, pressure oil in lift cylinder 1 and lift cylinder 2 13 is by promoting electromagnetic valve 1 and the direct drain charge of pipeline 26, lift cylinder 1 and lift cylinder 2 13 are all in quick condition, when paver is forced to pave, vacuum solenoid valve 3, promote electromagnetic valve 1, damping electromagnetic valve 9, electronic one way valve 1, electronic one way valve 2 17, electronic one way valve 3 14 and electronic one way valve 4 12 be no power all, after the equal no power of each electronic one way valve, now, electronic one way valve 1 is shut the fluid in lift cylinder one 18 rodless cavities, electronic one way valve 2 17 is shut the interior rod chamber inner fluid of lift cylinder 1, electronic one way valve 3 14 is shut the fluid in lift cylinder 2 13 rodless cavities, electronic one way valve 4 12 is shut the fluid in lift cylinder 2 13 rod chambers, now in the rod chamber of lift cylinder 1 and lift cylinder 2 13 and rodless cavity, all without pressure oil, enter, when decompression paves, vacuum solenoid valve 3 and 1 energising of lifting electromagnetic valve, damping electromagnetic valve 9 no powers, electronic one way valve 1, electronic one way valve 2 17, electronic one way valve 3 14 and 4 12 energisings of electronic one way valve, the rodless cavity of lift cylinder 1 and lift cylinder 2 13 is connected with pipeline 3 21 with pipeline 5 11 by pipeline 4 20 respectively, and pipeline 3 21 is by promoting the oil-out A of electromagnetic valve 1
1with the oil return inlet T that promotes electromagnetic valve 1
1be communicated with, thereby the pressure oil in lift cylinder 1 and lift cylinder 2 13 rodless cavities is refluxed, the pressure in lift cylinder 1 and lift cylinder 2 13 rodless cavities is reduced, simultaneously, a part of pressure off-load by vacuum solenoid valve 3 by the pressure oil of valve piece master oil inlet P input, guarantee that the rod chamber of lift cylinder 1 and lift cylinder 2 13 is subject to the pressure of 5MPa always, when manually screed promotes, promote electromagnetic valve 1 energising, vacuum solenoid valve 3 and damping electromagnetic valve 9 no powers, electronic one way valve 2 17 and electronic one way valve 4 12 no powers, electronic one way valve 1 and 3 14 energisings of electronic one way valve, the rodless cavity of lift cylinder 1 and lift cylinder 2 13 is connected with pipeline 3 21 with pipeline 5 11 by pipeline 4 20 respectively, and pipeline 3 21 is by promoting the oil-out A of electromagnetic valve 1
1with the oil return inlet T that promotes electromagnetic valve 1
1be communicated with, thereby the pressure oil in lift cylinder 1 and lift cylinder 2 13 rodless cavities is refluxed, make lift cylinder 1 and lift cylinder 2 13 rodless cavity pressure oil off-loads, pressure oil enters the rod chamber of lift cylinder 1 and lift cylinder 2 13 by 6 10 rear minutes two-way of pipeline by pipeline 7 16 and pipeline 8 15, drive paver screed by the pressure differential between lift cylinder 1 and lift cylinder 2 13 rodless cavities and rod chamber and upwards promote,
When manually screed descends, vacuum solenoid valve 3, lifting electromagnetic valve 1 no power, 9 energisings of damping electromagnetic valve, electronic one way valve 1 and electronic one way valve 3 14 no powers, electronic one way valve 2 17 and electronic one way valve 4 12 are all switched on, and the rod chamber of lift cylinder 1 and lift cylinder 2 13 is the oil return inlet T with damping electromagnetic valve 9 by pipeline 6 10
2be communicated with, thereby make the pressure oil of lift cylinder 1 and lift cylinder 2 13 rod chambers get back to fuel tank by valve piece master oil return inlet T, lift cylinder 1 and lift cylinder 2 13 are because the deadweight that is subject to screed starts to descend, and the throttling joint 8 on pipeline 6 10 produces back pressure steadily descends screed.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification, change and equivalent structure transformation of above embodiment being done according to the technology of the present invention essence, all still belong in the protection domain of technical solution of the present invention.
Claims (5)
1. the hydraulic system promoted for paver screed, it is characterized in that: comprise electronic one way valve one (19), electronic one way valve two (17), electronic one way valve three (14), electronic one way valve four (12), lift cylinder one (18) and lift cylinder two (13) and the valve piece be communicated with fuel tank, be provided with in described valve piece and promote electromagnetic valve (1), pipeline one (2) and pipeline two (6), one end of described pipeline one (2) is communicated with valve piece master oil inlet P, the other end of described pipeline one (2) and the oil inlet P that promotes electromagnetic valve (1)
1be communicated with, an end of described pipeline two (6) is communicated with valve piece master oil return inlet T, the other end of described pipeline two (6) and the oil return inlet T that promotes electromagnetic valve (1)
1be communicated with, described lifting electromagnetic valve (1) is connected with pipeline three (21), an end of described pipeline three (21) and the oil-out A that promotes electromagnetic valve (1)
1be communicated with, the other end of described pipeline three (21) is communicated with an end of pipeline parallel with one another four (20) and pipeline five (11), the other end of described pipeline four (20) is communicated with the rodless cavity of lift cylinder one (18) by electronic one way valve one (19), the other end of described pipeline five (11) is communicated with the rodless cavity of lift cylinder two (13) by electronic one way valve three (14), described lifting electromagnetic valve (1) is connected with pipeline six (10), an end of described pipeline six (10) and the oil-out B that promotes electromagnetic valve (1)
1be communicated with, the other end of described pipeline six (10) is communicated with an end of pipeline parallel with one another seven (16) and pipeline eight (15), the other end of pipeline seven (16) is communicated with the rod chamber of lift cylinder one (18) by electronic one way valve two (17), and the other end of described pipeline eight (15) is communicated with the rod chamber of lift cylinder two (13) by electronic one way valve four (12).
2. the hydraulic system promoted for paver screed according to claim 1, is characterized in that: on described pipeline six (10), damping electromagnetic valve (9) is installed, the oil return inlet T of described damping electromagnetic valve (9)
2by pipeline nine (7), with valve piece master oil return inlet T, be communicated with.
3. the hydraulic system promoted for paver screed according to claim 1 and 2, it is characterized in that: described valve piece master oil inlet P is communicated with valve piece master oil return inlet T by pipeline ten (4), on described pipeline ten (4), vacuum solenoid valve (3) is installed.
4. the hydraulic system promoted for paver screed according to claim 3, is characterized in that: the overflow valve (5) be in series with vacuum solenoid valve (3) is installed on described pipeline ten (4).
5. the hydraulic system promoted for paver screed according to claim 2, is characterized in that: on described pipeline nine (7), throttling joint (8) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110377702 CN103132436A (en) | 2011-11-24 | 2011-11-24 | Hydraulic system for lifting paver screed plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110377702 CN103132436A (en) | 2011-11-24 | 2011-11-24 | Hydraulic system for lifting paver screed plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103132436A true CN103132436A (en) | 2013-06-05 |
Family
ID=48492849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110377702 Pending CN103132436A (en) | 2011-11-24 | 2011-11-24 | Hydraulic system for lifting paver screed plate |
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| Country | Link |
|---|---|
| CN (1) | CN103132436A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805758A (en) * | 2015-03-16 | 2015-07-29 | 徐工集团工程机械股份有限公司道路机械分公司 | Multifunctional hydraulic system for controlling actions of screed of paver |
| CN105626611A (en) * | 2014-11-08 | 2016-06-01 | 陕西中大机械集团有限责任公司 | Hydraulic control loop for wholly hoisting iron of paver |
| CN105626604A (en) * | 2014-11-05 | 2016-06-01 | 陕西中大机械集团有限责任公司 | Hydraulic control circuit for extension ironing and inverted arching prevention of paver |
| CN107366648A (en) * | 2017-09-11 | 2017-11-21 | 徐工集团工程机械股份有限公司 | A kind of hydraulic control system of paver screed |
-
2011
- 2011-11-24 CN CN 201110377702 patent/CN103132436A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626604A (en) * | 2014-11-05 | 2016-06-01 | 陕西中大机械集团有限责任公司 | Hydraulic control circuit for extension ironing and inverted arching prevention of paver |
| CN105626611A (en) * | 2014-11-08 | 2016-06-01 | 陕西中大机械集团有限责任公司 | Hydraulic control loop for wholly hoisting iron of paver |
| CN104805758A (en) * | 2015-03-16 | 2015-07-29 | 徐工集团工程机械股份有限公司道路机械分公司 | Multifunctional hydraulic system for controlling actions of screed of paver |
| CN107366648A (en) * | 2017-09-11 | 2017-11-21 | 徐工集团工程机械股份有限公司 | A kind of hydraulic control system of paver screed |
| CN107366648B (en) * | 2017-09-11 | 2023-08-29 | 徐工集团工程机械股份有限公司 | A hydraulic control system for paver screed |
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Application publication date: 20130605 |