CN101775774B - Device for adaptive control of ground clearance of front discharge door of pavement milling machine - Google Patents
Device for adaptive control of ground clearance of front discharge door of pavement milling machine Download PDFInfo
- Publication number
- CN101775774B CN101775774B CN2009100362745A CN200910036274A CN101775774B CN 101775774 B CN101775774 B CN 101775774B CN 2009100362745 A CN2009100362745 A CN 2009100362745A CN 200910036274 A CN200910036274 A CN 200910036274A CN 101775774 B CN101775774 B CN 101775774B
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- discharge door
- controller
- milling machine
- position sensor
- control signal
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Abstract
The invention relates to a device for adaptive control of the ground clearance of a front discharge door of a pavement milling machine, which comprises a conveyer bracket connected with the front discharge door of the milling machine, a hydraulic cylinder capable of driving the front discharge door and the conveyer bracket to ascend and descend, and an electromagnetic valve capable of controlling lifting actions of the hydraulic cylinder, wherein the bottom of the conveyer bracket is provided with a position sensor; the device also comprises a controller capable of outputting ascending and descending control commands to the electromagnetic valve; the position sensor can input part of the output ascending or descending control signals to the control signals of the controller; a control signal input part of the controller is also connected with a manual option switch capable of inputting ascending or descending control signals; and the controller is also connected with the position sensor through a state switch. The device can automatically adjust the heights of the front discharge door and a conveyer of the pavement milling machine, and simultaneously has the advantages of high detection accuracy, high use reliability and long service life.
Description
Technical field
The invention belongs to field of road engineering machinery, the structure of output pavement milling machine specifically is a kind of device for adaptive control of ground clearance of front discharge door of pavement milling machine before relating to.
Background technology
The preceding output pavement milling machine of taking back material collecting device is when carrying out milling work, and the waste material that milling is got off comes out by the discharging opening impelling of milling and planing drum the past earlier, falls on the defeated material belt, is transported in the truck by defeated material belt and transports.Because milling machine output bin gate and conveyer are at the front end of milling and planing drum, under the situation of the corrupted road surface of complexity, the terrain clearance of output bin gate and conveyer is control in real time, bin gate and conveying function are with road surface situation lifting when meeting the road surface sudden change with assurance, avoid itself and pavement friction to cause conveyer belt to damage or the bin gate resistance excessive, simultaneously terrain clearance again can not be excessive, otherwise waste material impelling quantity not sufficient can occur or overflow from the bottom.Existing milling machine control system still can't realize this requirement preferably.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of milling machine that can detect in real time to treat work pavement behavior and adjust bin gate and conveyer height automatically, simultaneously accuracy of detection height, dependability height, long preceding discharge door of pavement milling machine and conveyer terrain clearance adaptive controller of life-span according to testing result.
Ground clearance of front discharge door of pavement milling machine automaton of the present invention includes conveyer bridge, the hydraulic cylinder that can drive preceding discharge door and conveyer bridge lifting that is connected with the preceding discharge door of milling machine, the electromagnetic valve that can control the lifting action of hydraulic cylinder, it is characterized in that: in the conveyer bridge bottom position sensor that is used for detecting the road surface is installed; Also including one in apparatus of the present invention can be to the controller of above-mentioned electromagnetic valve output rising and decline control instruction; Described position sensor can rise or the decline control signal to the output of the control signal importation of controller; The control signal importation of controller also is connected with the manual selection switch that can import rising or decline control signal; Controller also is connected with position sensor through a state switch, is used for control position working sensor or quit work.
The present invention can just change according to the road surface when work, by position sensor the ground level information conveyance is arrived controller, give electromagnetic valve through output order after the logical process, discharge door and conveyer terrain clearance can monitor and adjust in real time before making, effectively having avoided conveyer belt to contact with earth bulging with ground friction damage or preceding bin gate increases resistance, has prolonged its application life of parts; Its control accuracy height of while, good operating stability.
Description of drawings
Fig. 1 is the frame for movement schematic diagram of the embodiment of the invention;
Fig. 2 is the control principle figure of the embodiment of the invention.
The specific embodiment
As shown in the figure, this device includes conveyer bridge 2, the hydraulic cylinder 3 that can drive preceding discharge door and conveyer bridge lifting that is connected with the preceding discharge door 1 of milling machine, the electromagnetic valve YV1 that can control the lifting action of hydraulic cylinder, in the conveyer bridge bottom position sensor SQ1 that is used for detecting the road surface is installed; Also including one in the device can be to the controller 4 of electromagnetic valve YV1 output rising and decline control instruction; Position sensor SQ1 can rise or the decline control signal to the output of the control signal importation of controller; The control signal importation of controller also is connected with a manual selection switch SA2 that can import rising or decline control signal; Controller also is connected with position sensor SQ1 through a state switch SA1, is used for control position working sensor or quit work.State switch SA1 is used for switching manual work state, automatic mode or halted state, and only can effectively exporting when automatic mode of position sensor SQ1 risen or the decline control signal; No matter automatically still during the manual work state, manual selection switch SA2 all can effectively export and rise or the decline control signal, has guaranteed the emergency processing of special circumstances.
Claims (1)
1. ground clearance of front discharge door of pavement milling machine automaton, include conveyer bridge (2), the hydraulic cylinder (3) that can drive preceding discharge door and conveyer bridge lifting that is connected with the preceding discharge door (1) of milling machine, the electromagnetic valve (YV1) that can control the lifting action of hydraulic cylinder, it is characterized in that: position sensor (SQ1) is installed in the conveyer bridge bottom; Also including one in the device can be to the controller (4) of electromagnetic valve (YV1) output rising and decline control instruction; Position sensor (SQ1) can rise or the decline control signal to the output of the control signal importation of controller; The control signal importation of controller also is connected with the manual selection switch (SA2) that can import rising or decline control signal; Controller also is connected with position sensor (SQ1) through a state switch (SA1), be used for control position working sensor or quit work, state switch (SA1) is used for switching manual work state, automatic mode or halted state, and position sensor (SQ1) only can effectively be exported when automatic mode and rise or the decline control signal; No matter automatically still during the manual work state, manual selection switch (SA2) all can effectively be exported and rise or the decline control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100362745A CN101775774B (en) | 2009-10-28 | 2009-10-28 | Device for adaptive control of ground clearance of front discharge door of pavement milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100362745A CN101775774B (en) | 2009-10-28 | 2009-10-28 | Device for adaptive control of ground clearance of front discharge door of pavement milling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101775774A CN101775774A (en) | 2010-07-14 |
| CN101775774B true CN101775774B (en) | 2011-07-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100362745A Expired - Fee Related CN101775774B (en) | 2009-10-28 | 2009-10-28 | Device for adaptive control of ground clearance of front discharge door of pavement milling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101775774B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168401B (en) * | 2011-05-27 | 2012-10-24 | 长安大学 | Constant-pressure ground-connection control method for rear door of pavement planer |
| CN102644232B (en) * | 2012-05-09 | 2014-12-10 | 中联重科股份有限公司 | Control method and control device of milling machine and milling machine |
| DE102012012397A1 (en) * | 2012-06-25 | 2014-04-24 | Wirtgen Gmbh | Self-propelled construction machine |
| CN102776827B (en) * | 2012-08-09 | 2015-04-22 | 三一重工股份有限公司 | Milling machine and milling depth monitoring device thereof |
| CN107642023B (en) * | 2017-08-12 | 2020-10-09 | 芜湖习科控制***有限公司 | Multifunctional conveying device for milling machine |
| CN111979874B (en) * | 2020-07-17 | 2022-01-18 | 江苏集萃道路工程技术与装备研究所有限公司 | Material adding control system and method for in-situ remixer |
-
2009
- 2009-10-28 CN CN2009100362745A patent/CN101775774B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101775774A (en) | 2010-07-14 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20171028 |