CN2763341Y - Floating and sinking-resisting device for ironing-levelling board of spreader - Google Patents
Floating and sinking-resisting device for ironing-levelling board of spreader Download PDFInfo
- Publication number
- CN2763341Y CN2763341Y CN 200420054151 CN200420054151U CN2763341Y CN 2763341 Y CN2763341 Y CN 2763341Y CN 200420054151 CN200420054151 CN 200420054151 CN 200420054151 U CN200420054151 U CN 200420054151U CN 2763341 Y CN2763341 Y CN 2763341Y
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- valve
- oil
- lift cylinder
- screed
- lift
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Abstract
The utility model relates to a floating sinking preventing device for an ironing board of a paver. The utility model comprises a lifting oil cylinder which is hinged at two sides of the ironing board and a vehicle frame, and a lifting valve and is also provided with a settling preventing valve and a floating valve. The settling preventing valve is a reversing valve with a one-way valve, and high pressure oil is communicated with a lower oil cavity of the lifting oil cylinder through the lifting valve and the settling preventing valve. An upper oil cavity of the lifting oil cylinder is connected with an oil returning tank through an oil outlet of the lifting valve, and the floating valve is composed of the reversing valve with the one-way valve, and a pressure reducing valve. The high pressure oil respectively enters the lower oil cavity and a lifting ironing board of the lifting oil cylinder through the pressure reducing valve, the reversing valve and a working oil path of the settling preventing valve. Regulated and changed oil pressure is provided in order to enhance or lower the ironing board. When the one-way valve of the settling preventing valve and the one-way valve of the reversing valve are communicated with the lower oil cavity of the lifting oil cylinder, the high pressure oil is communicated with the oil returning tank. The pressure of the lower oil cavity of the lifting oil cylinder keeps unchanged to prevent the ironing board from sinking and solve the problem which the paver encounters in the process of construction.
Description
Technical field
The utility model relates to a kind of ironing machine of sub-base grader, especially relates to a kind of unsteady, anti-sinking device of paver screed.
Background technology
Paver is in work progress, and the ironing process on road surface is directly connected to whole workmanship of building the road, and therefore, is the prerequisite function of paver to the control of paver ironing machine.But when paver was shut down, because the oil pressure in the lift cylinder reduces, under screed deadweight effect, screed sank to causing the variation of flooring layer thickness, and directly has influence on the work quality of paver.In addition, when the medium that paves (compound) when density is relatively low, in the construction that paves,, also make screed be easy to, and have influence on the quality of building the road because screed is difficult for free floating.
Summary of the invention
The purpose of this utility model provides a kind of when paver is shut down; can prevent that screed from sinking, and in the construction that paves, can make the screed free floating; the medium influence that do not paved effectively improves the floating of paver screed, the anti-sinking device of pavement spread quality.
The utility model is achieved in that floating of a kind of paver screed, anti-sinking device, comprise the lift cylinder and the lift valve that are hinged on screed and vehicle frame both sides, also have antisettle valve and float trap, described antisettle valve is the reversal valve that has one way valve, hydraulic oil passes through lift valve, antisettle valve communicates with the lower oil cavitie of lift cylinder, and the upper oil cavitie of lift cylinder takes back fuel tank by the oil-out of lift valve, described float trap is made up of reversal valve that has one way valve and reducing valve, the reducing valve that communicates with hydraulic oil communicates with the lower oil cavitie of lift cylinder by reversal valve, hydraulic oil is leaded up to the lower oil cavitie that the working oil path of antisettle valve enters lift cylinder and is promoted screed, another road enters the lower oil cavitie of lift cylinder through the working oil path of reducing valve connection reversal valve, provide the oil pressure of regulating variation to promote or the decline screed, when the one way valve of antisettle valve and the one way valve of reversal valve communicate with the lower oil cavitie of lift cylinder, hydraulic oil communicates with oil sump tank, the lower oil cavitie pressure of lift cylinder remains unchanged, and prevents that screed from sinking.
The utility model operating principle is: when the paver operate as normal, the oil circuit of two antisettle valves of hydraulic oil connection enters the lower oil cavitie of two lift cylinders simultaneously, at this moment, because the pressure of the lower oil cavitie of lift cylinder greater than the pressure of upper oil cavitie, promotes screed.In the time will handling " float/anti-fall into " gauge tap on the console and remove to " anti-falling into " position; hydraulic oil communicates with oil sump tank; this moment, antisettle valve and reversal valve were under the effect of one way valve; make the pressure oil of lift cylinder keep stable; prevent that effectively screed from sinking, thereby prevent the sinking of screed after realizing shutting down.In the auxilliary construction in stand, need screed to float, " floating/anti-falling into " gauge tap of handling on the console is removed to " floating " position, and the control crank that the travels direction of pushing forward, at this moment hydraulic oil enters the lower oil cavitie of lift cylinder by the working oil path of antisettle valve, and another road hydraulic oil is by the reducing valve on the float trap, the working oil path of reversal valve enters the lower oil cavitie of lift cylinder, obtain being fit to the required operating pressure of different material spreaders by regulating reducing valve, the pressure oil of supplying with lift cylinder reaches suitable operating pressure, regulate on the lift cylinder, the pressure of lower oil cavitie reaches balance, thereby realize the control of floating when making the paver screed operation, be suitable for the different media that paves, and can realize the Load Alleviation Function of screed, to improve the traction situation of paver.
The utility model adopts the advantage of technique scheme to be: the utility model is supplied with the lower chamber of lift cylinder respectively by antisettle valve and float trap two-way pressure oil, owing to need not to set up new oil circuit, simple in structure, compact, reach the upper and lower oil pocket pressure balance of lift cylinder by antisettle valve and float trap, when making the operation of paver ironing machine, screed is realized free floating control, and screed is difficult for sinking, and improves the quality of building the road.And when connecting the one way valve of antisettle valve and float trap, the oil pressure of lift cylinder lower oil cavitie is remained unchanged, prevent that effectively screed from sinking, and solves the above-mentioned difficult problem that paver runs in work progress.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the left TV structure schematic diagram of Fig. 1.
Fig. 3 is a hydraulic schematic diagram of the present utility model.
The specific embodiment
See shown in Fig. 1～3, unsteady, the anti-sinking device of paver screed of the present utility model, comprise two lift cylinders 2, lift valve 6, antisettle valve 7 and float trap 8, the both sides of screed 3 are hinged on the piston of two lift cylinders 2 by bearing pin respectively, and the other end of lift cylinder 2 also is connected on the vehicle frame 1 by bearing pin, antisettle valve 7 usefulness bolton are on the anti-settling valve seat, the float trap 8 that reversal valve 8-1 and reducing valve 8-2 form is superimposed, and fastens as one with anti-settling valve seat and end cover.The upper oil cavitie 2-1 of lift cylinder 2 takes back fuel tank by the oil-out that oil pipe connects lift valve 6, high-pressure oil pump communicates with Monostable valve 5 by pipeline, Monostable valve 5 of the present utility model is made up of choke valve and overflow valve, and hydraulic oil is delivered to the oil-in of lift valve 6, this lift valve 6 is four position three-way valves, the oil-out of lift valve 6 is taken over control the oil-in of sedimentation valve 7, antisettle valve 7 is the bi-bit bi-pass reversal valve of band one way valve, the oil-out of antisettle valve 7 communicates with the lower oil cavitie 2-2 of lift cylinder 2 by oil pipe, and the operating pressure of lift cylinder 2 is provided.Float trap 8 of the present utility model is made up of the bi-bit bi-pass reversal valve 8-1 and the reducing valve 8-2 of band one way valve, the oil-in of reducing valve 8-2 connects hydraulic oil, the oil-out of reducing valve 8-2 meets reversal valve 8-1, the reducing valve 8-2 that communicates with hydraulic oil reads valve 8-1 by commutation and communicates with the lower oil cavitie 2-2 of lift cylinder 2, make the lifting of lift cylinder 2 rely on the variation of lower oil cavitie 2-2 oil pressure to control, lead up to the lower oil cavitie 2-2 that the working oil path of antisettle valve 7 enters lift cylinder 2 when hydraulic oil and promote screed 3, another road hydraulic oil then enters the lower oil cavitie 2-2 of lift cylinder 2 through the working oil path of reducing valve 8-2 decompression back connection reversal valve 8-1, hydraulic oil is regulated by reducing valve 8-2 decompression and is obtained being fit to the required operating pressure of different material spreader 4, in the adjusting, the pressure of lower oil cavitie changes with lifting or decline screed 3, thereby realizes screed 3 unsteady controls.When preventing sunken working, the two-way hydraulic oil communicates with oil sump tank through unloader and overflow valve respectively, the one way valve of antisettle valve 7 and the one way valve of reversal valve 8-1 communicate with the lower oil cavitie 2-2 of lift cylinder 2 simultaneously, under the effect of two one way valves, keep the lower oil cavitie 2-2 pressure of lift cylinder 2 constant, pin lift valve 6, prevent that screed 3 from sinking.
Claims (5)
1, a kind of unsteady, anti-sinking device of paver screed, comprise the lift cylinder (2) and the lift valve (6) that are hinged on screed (3) and vehicle frame (1) both sides, it is characterized in that: also have antisettle valve (7) and float trap (8), described antisettle valve (7) is for having the reversal valve of one way valve, hydraulic oil communicates with the lower oil cavitie (2-2) of lift cylinder (2) by lift valve (6), antisettle valve (7), and the oil-out of the upper oil cavitie (2-1) of lift cylinder (2) by lift valve (6) takes back fuel tank; Described float trap (8) is made up of reversal valve that has one way valve (8-1) and reducing valve (8-2), hydraulic oil communicates with the lower oil cavitie (2-2) of lift cylinder (2) by reducing valve (8-2) and reversal valve (8-1), hydraulic oil is leaded up to the lower oil cavitie (2-2) that the working oil path of antisettle valve (7) enters lift cylinder (2) and is promoted screed (3), the working oil path that reversal valve (8-1) is connected through reducing valve (8-2) in another road enters the lower oil cavitie (2-2) of lift cylinder (2), provides to regulate the oil pressure that changes to promote or decline screed (3); Communicate with the lower oil cavitie (2-2) of lift cylinder (2) at the one way valve of antisettle valve (7) and the one way valve of reversal valve (8-1), hydraulic oil communicates with oil sump tank, and lower oil cavitie (2-2) pressure of lift cylinder (2) remains unchanged, and prevents that screed (3) from sinking.
2, unsteady, the anti-sinking device of paver screed according to claim 1, it is characterized in that: described lift valve (6) is a three position four-way directional control valve, and the oil-in of lift valve (6) communicates with Monostable valve (5).
3, unsteady, the anti-sinking device of paver screed according to claim 1, it is characterized in that: described Monostable valve (5) is made up of choke valve and overflow valve.
4, unsteady, the anti-sinking device of paver screed according to claim 1, it is characterized in that: described antisettle valve (7) is the bi-bit bi-pass reversal valve.
5, unsteady, the anti-sinking device of paver screed according to claim 1, it is characterized in that: described reversal valve (8-1) is the bi-bit bi-pass reversal valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420054151 CN2763341Y (en) | 2004-12-08 | 2004-12-08 | Floating and sinking-resisting device for ironing-levelling board of spreader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420054151 CN2763341Y (en) | 2004-12-08 | 2004-12-08 | Floating and sinking-resisting device for ironing-levelling board of spreader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2763341Y true CN2763341Y (en) | 2006-03-08 |
Family
ID=36140888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420054151 Expired - Fee Related CN2763341Y (en) | 2004-12-08 | 2004-12-08 | Floating and sinking-resisting device for ironing-levelling board of spreader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2763341Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047914A (en) * | 2014-07-03 | 2014-09-17 | 戴纳派克（中国）压实摊铺设备有限公司 | Floating screed control system of paver and 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 |
| CN106337352A (en) * | 2015-07-08 | 2017-01-18 | 中联重科股份有限公司 | Paver and paving control system thereof |
| CN106523446A (en) * | 2015-09-11 | 2017-03-22 | 徐工集团工程机械股份有限公司 | Hydraulic control system and paver |
| CN111601929A (en) * | 2018-01-03 | 2020-08-28 | 沃尔沃建筑设备公司 | Paver and method for height calibration of a screed of a paver |
| CN113585003A (en) * | 2021-07-28 | 2021-11-02 | 徐工集团工程机械股份有限公司道路机械分公司 | Spreading machine and spreading method thereof |
-
2004
- 2004-12-08 CN CN 200420054151 patent/CN2763341Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047914A (en) * | 2014-07-03 | 2014-09-17 | 戴纳派克（中国）压实摊铺设备有限公司 | Floating screed control system of paver and paver |
| CN104047914B (en) * | 2014-07-03 | 2016-03-09 | 戴纳派克（中国）压实摊铺设备有限公司 | A kind of paver control of floating ironer system and 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 |
| CN106337352A (en) * | 2015-07-08 | 2017-01-18 | 中联重科股份有限公司 | Paver and paving control system thereof |
| CN106337352B (en) * | 2015-07-08 | 2019-01-08 | 中联重科股份有限公司 | Paver and its control system that paves |
| CN106523446A (en) * | 2015-09-11 | 2017-03-22 | 徐工集团工程机械股份有限公司 | Hydraulic control system and paver |
| CN111601929A (en) * | 2018-01-03 | 2020-08-28 | 沃尔沃建筑设备公司 | Paver and method for height calibration of a screed of a paver |
| CN113585003A (en) * | 2021-07-28 | 2021-11-02 | 徐工集团工程机械股份有限公司道路机械分公司 | Spreading machine and spreading method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060308 Termination date: 20100108 |