CN106087667A - Triangle disposition freely-moving mangle section difference automatic regulating and controlling device and method thereof - Google Patents
Triangle disposition freely-moving mangle section difference automatic regulating and controlling device and method thereof Download PDFInfo
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- CN106087667A CN106087667A CN201610672242.4A CN201610672242A CN106087667A CN 106087667 A CN106087667 A CN 106087667A CN 201610672242 A CN201610672242 A CN 201610672242A CN 106087667 A CN106087667 A CN 106087667A
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- base plate
- screed
- section
- telescopic section
- side telescopic
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
- E01C19/4866—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely non-vibratory or non-percussive pressing or smoothing means for consolidating or finishing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
Abstract
The invention discloses a kind of triangle disposition freely-moving mangle section difference automatic regulating and controlling device and method thereof, wherein control device and include controller, it is connected with the input of controller respectively and is installed on the obliquity sensor on triangle disposition freely-moving mangle, left lateral position displacement sensor and right lateral position displacement sensor, and display, left side drive and the right driver being connected with the outfan of controller respectively；Triangle disposition freely-moving mangle includes section of foundation screed, is separately mounted to left side telescopic section screed and the right side telescopic section screed of the both sides tail end of the width of section of foundation screed；Obliquity sensor is arranged on section of foundation screed, left lateral position displacement sensor and right lateral position displacement sensor and is separately mounted to left side telescopic section screed and right side telescopic section screed.Poor the automatically controlling in real time and adjust of the section of realization, it is ensured that the paving concrete pavement of telescopic section screed and section of foundation screed is in same plane all the time, reduces labor intensity and also improves construction quality and precision.
Description
Technical field
The present invention relates to a kind of screed automatic regulating and controlling device and method, particularly relate to a kind of triangle disposition and stretch
Screed section difference automatic regulating and controlling device and control method thereof, belong to technical field of paver control.
Background technology
Paver is a kind of to stablize soil material, roller-compacting concrete material etc. for the asphalt that paves, basic unit and build the road material
The special construction apparatus of material.
At present, when the paver of triangle disposition freely-moving mangle carries out paving work, in terms of the direction that paver advances,
Section of foundation is front, and left and right telescopic section is rear, owing to floating on material spreader, and low and ground formation after height before the base plate of screed
One 1 °～the elevation angle of 3 °, this elevation angle makes telescopic section screed base plate tailing edge and section of foundation screed base plate tailing edge not same
Plane, forms section poor, causes the road surface that telescopic section base plate paves out, the road paving out less than section of foundation screed base plate
Face, not at same plane, causes surface evenness to be arrived requirement.For eliminating this phenomenon, it is necessary for telescopic section screed
Move on base plate, make the road surface paving out at same plane.
In actual floating paving process, the screed elevation angle is made to exist in rough basic unit owing to paver travels
Constantly changing, it is poor that this is accomplished by the constantly section of adjustment, so that the road surface paving out is at same plane.But when dispatching from the factory, paver
Freely-moving mangle, the base plate of its section of foundation and telescopic section is in same level plane, and the section of not having is poor；Therefore pave work time,
Need operator according to the constantly section of the carrying out difference adjustment of elevation angle situation, labor intensity big and exist personal error and adjust less than
The situation of position, is all not carried out automatically controlling.
Summary of the invention
Present invention is primarily targeted at, overcome deficiency of the prior art, it is provided that a kind of triangle disposition freely-moving mangle
Section difference automatic regulating and controlling device and control method thereof, it is achieved between telescopic section screed and section of foundation screed, section difference is real-time
Automatically control and adjust, it is ensured that the paving concrete pavement of telescopic section screed and section of foundation screed is in same plane all the time, has
Value in industry.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of triangle disposition freely-moving mangle section difference automatic regulating and controlling device, including controller, respectively with the input of controller
End is connected and is installed on the obliquity sensor on paver triangle disposition freely-moving mangle, left lateral position displacement sensor and right side displacement
Sensor, and display, left side drive and the right driver being connected with the outfan of controller respectively.
Wherein, described triangle disposition freely-moving mangle includes section of foundation screed, is separately mounted to section of foundation screed
The left side telescopic section screed of the both sides tail end of width and right side telescopic section screed；The end of described section of foundation screed
The base plate of plate, the base plate of left side telescopic section screed and right side telescopic section screed the most at grade, and in isosceles triangle before
Rear arrangement；Described left side telescopic section screed and right side telescopic section screed are driven by left side drive and right driver respectively
Move and move up and down；Described obliquity sensor is arranged on section of foundation screed, described left lateral position displacement sensor and right side displacement
Sensor is separately mounted to left side telescopic section screed and right side telescopic section screed.
And, described obliquity sensor, for detecting the base plate inclination angle of section of foundation screed, it is thus achieved that base plate elevation value, and
Base plate elevation value is transmitted to controller；Described left lateral position displacement sensor, for detecting the base plate of left side telescopic section screed
Bottom offset, it is thus achieved that left side telescopic section base plate upper and lower displacement value, and transmit it to controller；Described right lateral position displacement sensor, uses
The base plate upper and lower displacement of telescopic section screed on the right side of detection, it is thus achieved that right side telescopic section base plate upper and lower displacement value, and transmitted
To controller；Described controller, for receiving and store the base plate elevation value of section of foundation, left side telescopic section base plate upper and lower displacement value
With right side telescopic section base plate upper and lower displacement value, and it is shown in display, it is judged that whether base plate elevation value changes, by calculating base plate
Elevation value changes the upper and lower displacement value needed for corresponding left side telescopic section screed and right side telescopic section screed base plate, from
And control left side drive and right driver drives on left side telescopic section screed and right side telescopic section screed carry out respectively
Bottom offset until left side telescopic section base plate upper and lower displacement value and right side telescopic section base plate upper and lower displacement value all with calculate upper bottom
Shifting value is equal, realize action displacement puts in place.
The present invention is further arranged to: described left side telescopic section screed and right side telescopic section screed are all by connecting machine
Structure is connected with section of foundation screed.
The present invention is further arranged to: described left side drive and right driver are respectively left side lift motor and right side
Lift motor, described left side lift motor is connected with left side telescopic section screed by left side drive mechanism, and described right side lifts
Motor is connected with right side telescopic section screed by right side drive mechanism.
The present invention is further arranged to: described left lateral position displacement sensor and right lateral position displacement sensor are separately mounted to left side and pass
On motivation structure and right side drive mechanism.
The present invention is further arranged to: described controller uses PLC.
The present invention is further arranged to: described display is LCDs.
The present invention also provides for the control method of triangle disposition freely-moving mangle section difference automatic regulating and controlling device, including with
Lower step:
1) its base plate inclination angle is detected by being installed on the obliquity sensor of section of foundation screed, it is thus achieved that base plate elevation value, and the end of by
Plate elevation value is transmitted to controller；
Its base plate upper and lower displacement is detected, it is thus achieved that stretch in left side by being installed on the left lateral position displacement sensor of left side telescopic section screed
Section base plate upper and lower displacement value, and transmit it to controller；
Its base plate upper and lower displacement is detected, it is thus achieved that stretch in right side by being installed on the right lateral position displacement sensor of right side telescopic section screed
Section base plate upper and lower displacement value, and transmit it to controller；
2) by controller, the base plate elevation value stored before the base plate elevation value of reception and the time of reception is compared, it is judged that the end
Whether plate elevation value changes；
If base plate elevation value does not change, then return step 1)；
If base plate elevation value changes, then perform next step；
3) controller calculating base plate elevation value changes at the bottom of corresponding left side telescopic section screed and right side telescopic section screed
Upper and lower displacement value needed for plate；
4) controller controls left side drive and right driver drives left side telescopic section screed and right side telescopic section to press respectively
The base plate of flat board carries out upper and lower displacement；
5) after left lateral position displacement sensor and right lateral position displacement sensor detect in real time, telescopic section base plate upper and lower displacement on the left of acquisition respectively
Value and right side telescopic section base plate upper and lower displacement value, controller is by the left side of Real-time Feedback, right side telescopic section base plate upper and lower displacement value
Compare with the upper and lower displacement value calculated, and then judge whether action displacement puts in place；
If the left side telescopic section base plate upper and lower displacement value of Real-time Feedback and right side telescopic section base plate upper and lower displacement value are upper with calculating
Bottom offset value is unequal, then action displacement does not puts in place, returns step 4)；
If left side telescopic section base plate upper and lower displacement value and right side telescopic section base plate upper and lower displacement value are equal with the upper and lower displacement value of calculating
Equal, then action displacement puts in place, returns step 1).
The control method of the present invention is further arranged to: described base plate elevation value is in the range of 1 °～3 °.
Compared with prior art, the invention have the advantages that:
Realize poor the automatically controlling in real time and adjust of section between telescopic section screed and section of foundation screed, it is ensured that telescopic section presses
The paving concrete pavement of plate and section of foundation screed is in same plane all the time, reduces labor intensity of operating staff significantly improving and executes
Working medium amount and construction precision, remarkable in economical benefits；Can intuitively be shown the change of real time data by display simultaneously.
Foregoing is only the general introduction of technical solution of the present invention, in order to be better understood upon the technological means of the present invention, under
Face combines accompanying drawing, and the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of triangle disposition freely-moving mangle section difference automatic regulating and controlling device of the present invention；
Fig. 2 is the flow chart of the control method of triangle disposition freely-moving mangle section difference automatic regulating and controlling device of the present invention.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is further illustrated.
A kind of triangle disposition freely-moving mangle section difference automatic regulating and controlling device as shown in Figure 1, including controller, respectively
Be connected with the input of controller and be installed on the obliquity sensor on paver triangle disposition freely-moving mangle, left side displacement passes
Sensor and right lateral position displacement sensor, and the display, left side drive and the right side that are connected with the outfan of controller respectively drive
Dynamic device；Described controller can use PLC, and described display can be LCDs.
Described triangle disposition freely-moving mangle includes section of foundation screed, is separately mounted to the width side of section of foundation screed
To the left side telescopic section screed of both sides tail end and right side telescopic section screed；Described left side telescopic section screed and right side are stretched
Contracting section screed is all connected with section of foundation screed by bindiny mechanism.
The base plate of described section of foundation screed, the base plate of left side telescopic section screed and the base plate of right side telescopic section screed
The most at grade, and in isosceles triangle in tandem；Described left side telescopic section screed and right side telescopic section screed are respectively
Drive by left side drive and right driver and move up and down；Described left side drive and right driver are respectively a left side
Side lift motor and right side lift motor, described left side lift motor passes through left side drive mechanism and left side telescopic section screed phase
Even, described right side lift motor is connected with right side telescopic section screed by right side drive mechanism.
Described obliquity sensor is arranged on section of foundation screed, and described left lateral position displacement sensor and right lateral position displacement sensor divide
It is not arranged on left side telescopic section screed and right side telescopic section screed, or on left side drive mechanism and right side drive mechanism.
Described obliquity sensor, for detecting the base plate inclination angle of section of foundation screed, it is thus achieved that base plate elevation value, and by base plate
Elevation value is transmitted to controller；Described left lateral position displacement sensor, for detecting the base plate upper and lower displacement of left side telescopic section screed,
Telescopic section base plate upper and lower displacement value on the left of acquisition, and transmit it to controller；Described right lateral position displacement sensor, is used for detecting the right side
The base plate upper and lower displacement of side telescopic section screed, it is thus achieved that right side telescopic section base plate upper and lower displacement value, and transmit it to controller.
Described controller, for receiving and store the base plate elevation value of section of foundation, left side telescopic section base plate upper and lower displacement value
With right side telescopic section base plate upper and lower displacement value, and it is shown in display, it is judged that whether base plate elevation value changes, by calculating base plate
Elevation value changes the upper and lower displacement value needed for corresponding left side telescopic section screed and right side telescopic section screed base plate, from
And control left side drive and right driver drives on left side telescopic section screed and right side telescopic section screed carry out respectively
Bottom offset until left side telescopic section base plate upper and lower displacement value and right side telescopic section base plate upper and lower displacement value all with calculate upper bottom
Shifting value is equal, realize action displacement puts in place.
The present invention also provides for the control method of triangle disposition freely-moving mangle section difference automatic regulating and controlling device, such as Fig. 2 institute
Show, comprise the following steps:
1) its base plate inclination angle is detected by being installed on the obliquity sensor of section of foundation screed, it is thus achieved that base plate elevation value, and the end of by
Plate elevation value is transmitted to controller；
Its base plate upper and lower displacement is detected, it is thus achieved that stretch in left side by being installed on the left lateral position displacement sensor of left side telescopic section screed
Section base plate upper and lower displacement value, and transmit it to controller；
Its base plate upper and lower displacement is detected, it is thus achieved that stretch in right side by being installed on the right lateral position displacement sensor of right side telescopic section screed
Section base plate upper and lower displacement value, and transmit it to controller；
2) by controller, the base plate elevation value stored before the base plate elevation value of reception and the time of reception is compared, it is judged that the end
Whether plate elevation value changes；
If base plate elevation value does not change, then return step 1)；
If base plate elevation value changes, then perform next step；
3) controller calculating base plate elevation value changes at the bottom of corresponding left side telescopic section screed and right side telescopic section screed
Upper and lower displacement value needed for plate；
4) controller controls left side drive and right driver drives left side telescopic section screed and right side telescopic section to press respectively
The base plate of flat board carries out upper and lower displacement；
5) after left lateral position displacement sensor and right lateral position displacement sensor detect in real time, telescopic section base plate upper and lower displacement on the left of acquisition respectively
Value and right side telescopic section base plate upper and lower displacement value, controller is by the left side of Real-time Feedback, right side telescopic section base plate upper and lower displacement value
Compare with the upper and lower displacement value calculated, and then judge whether action displacement puts in place；
If the left side telescopic section base plate upper and lower displacement value of Real-time Feedback and right side telescopic section base plate upper and lower displacement value are upper with calculating
Bottom offset value is unequal, then action displacement does not puts in place, returns step 4)；
If left side telescopic section base plate upper and lower displacement value and right side telescopic section base plate upper and lower displacement value are equal with the upper and lower displacement value of calculating
Equal, then action displacement puts in place, returns step 1).
The innovative point of the present invention is, it is achieved poor the automatically controlling in real time and adjust of section, it is ensured that telescopic section screed and base
The road surface that plinth section screed paves is in same plane all the time.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology people being familiar with this specialty
Member, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above makes a little change or modification
For the Equivalent embodiments of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit of the foundation present invention
Any simple modification, equivalent variations and the modification being made above example, all still falls within the scope of technical solution of the present invention
In.
Claims (8)
1. a triangle disposition freely-moving mangle section difference automatic regulating and controlling device, it is characterised in that: include controller, respectively with
The input of controller is connected and is installed on the obliquity sensor on paver triangle disposition freely-moving mangle, left side displacement sensing
Device and right lateral position displacement sensor, and display, left side drive and the right side driving being connected with the outfan of controller respectively
Device；
Described triangle disposition freely-moving mangle includes section of foundation screed, is separately mounted to the width of section of foundation screed
The left side telescopic section screed of both sides tail end and right side telescopic section screed；Stretch in the base plate of described section of foundation screed, left side
The base plate of the section base plate of screed and right side telescopic section screed the most at grade, and in isosceles triangle in tandem；Described
Left side telescopic section screed and right side telescopic section screed are driven by left side drive and right driver and are done up and down respectively
Motion；
Described obliquity sensor is arranged on section of foundation screed, and described left lateral position displacement sensor and right lateral position displacement sensor are pacified respectively
It is contained in left side telescopic section screed and right side telescopic section screed；
Described obliquity sensor, for detecting the base plate inclination angle of section of foundation screed, it is thus achieved that base plate elevation value, and by the base plate elevation angle
Value transmission is to controller；
Described left lateral position displacement sensor, for detecting the base plate upper and lower displacement of left side telescopic section screed, it is thus achieved that left side telescopic section
Base plate upper and lower displacement value, and transmit it to controller；
Described right lateral position displacement sensor, for detecting the base plate upper and lower displacement of right side telescopic section screed, it is thus achieved that right side telescopic section
Base plate upper and lower displacement value, and transmit it to controller；
Described controller, for receiving and store the base plate elevation value of section of foundation, left side telescopic section base plate upper and lower displacement value and the right side
Side telescopic section base plate upper and lower displacement value, and it is shown in display, it is judged that whether base plate elevation value changes, by calculating the base plate elevation angle
Value changes the upper and lower displacement value needed for corresponding left side telescopic section screed and right side telescopic section screed base plate, thus controls
Left side drive processed and right driver drive left side telescopic section screed and right side telescopic section screed to carry out upper bottom respectively
Move until left side telescopic section base plate upper and lower displacement value and right side telescopic section base plate upper and lower displacement value all with calculating upper and lower displacement value
Equal, realize action displacement and put in place.
Triangle disposition freely-moving mangle section difference automatic regulating and controlling device the most according to claim 1, it is characterised in that: institute
State left side telescopic section screed to be all connected with section of foundation screed by bindiny mechanism with right side telescopic section screed.
Triangle disposition freely-moving mangle section difference automatic regulating and controlling device the most according to claim 1, it is characterised in that: institute
Stating left side drive and right driver is respectively left side lift motor and right side lift motor, described left side lift motor passes through
Left side drive mechanism is connected with left side telescopic section screed, and described right side lift motor is stretched with right side by right side drive mechanism
Section screed is connected.
Triangle disposition freely-moving mangle section difference automatic regulating and controlling device the most according to claim 3, it is characterised in that: institute
State left lateral position displacement sensor and right lateral position displacement sensor is separately mounted on left side drive mechanism and right side drive mechanism.
Triangle disposition freely-moving mangle section difference automatic regulating and controlling device the most according to claim 1, it is characterised in that: institute
State controller and use PLC.
Triangle disposition freely-moving mangle section difference automatic regulating and controlling device the most according to claim 1, it is characterised in that: institute
Stating display is LCDs.
7. according to the control of the triangle disposition freely-moving mangle section difference automatic regulating and controlling device described in any one of claim 1～6
Method processed, it is characterised in that comprise the following steps:
1) its base plate inclination angle is detected by being installed on the obliquity sensor of section of foundation screed, it is thus achieved that base plate elevation value, and the end of by
Plate elevation value is transmitted to controller；
Its base plate upper and lower displacement is detected, it is thus achieved that stretch in left side by being installed on the left lateral position displacement sensor of left side telescopic section screed
Section base plate upper and lower displacement value, and transmit it to controller；
Its base plate upper and lower displacement is detected, it is thus achieved that stretch in right side by being installed on the right lateral position displacement sensor of right side telescopic section screed
Section base plate upper and lower displacement value, and transmit it to controller；
2) by controller, the base plate elevation value stored before the base plate elevation value of reception and the time of reception is compared, it is judged that the end
Whether plate elevation value changes；
If base plate elevation value does not change, then return step 1)；
If base plate elevation value changes, then perform next step；
3) controller calculating base plate elevation value changes at the bottom of corresponding left side telescopic section screed and right side telescopic section screed
Upper and lower displacement value needed for plate；
4) controller controls left side drive and right driver drives left side telescopic section screed and right side telescopic section to press respectively
The base plate of flat board carries out upper and lower displacement；
5) after left lateral position displacement sensor and right lateral position displacement sensor detect in real time, telescopic section base plate upper and lower displacement on the left of acquisition respectively
Value and right side telescopic section base plate upper and lower displacement value, controller is by the left side of Real-time Feedback, right side telescopic section base plate upper and lower displacement value
Compare with the upper and lower displacement value calculated, and then judge whether action displacement puts in place；
If the left side telescopic section base plate upper and lower displacement value of Real-time Feedback and right side telescopic section base plate upper and lower displacement value are upper with calculating
Bottom offset value is unequal, then action displacement does not puts in place, returns step 4)；
If left side telescopic section base plate upper and lower displacement value and right side telescopic section base plate upper and lower displacement value are equal with the upper and lower displacement value of calculating
Equal, then action displacement puts in place, returns step 1).
The control method of triangle disposition freely-moving mangle section difference automatic regulating and controlling device the most according to claim 7, its
It is characterised by: described base plate elevation value is in the range of 1 °～3 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610672242.4A CN106087667A (en) | 2016-08-15 | 2016-08-15 | Triangle disposition freely-moving mangle section difference automatic regulating and controlling device and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610672242.4A CN106087667A (en) | 2016-08-15 | 2016-08-15 | Triangle disposition freely-moving mangle section difference automatic regulating and controlling device and method thereof |
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| CN201610672242.4A Pending CN106087667A (en) | 2016-08-15 | 2016-08-15 | Triangle disposition freely-moving mangle section difference automatic regulating and controlling device and method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113924395A (en) * | 2019-03-29 | 2022-01-11 | 住友建机株式会社 | Asphalt rolling and leveling machine |
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| CN201358433Y (en) * | 2009-02-16 | 2009-12-09 | 朱存玉 | Segment difference automatic adjustment mechanism of telescopic ironing board of spreading machine |
| CN102926313A (en) * | 2012-11-20 | 2013-02-13 | 中联重科股份有限公司 | Screed height-difference adjusting device, paver and screed high-difference adjusting method |
| CN103015301A (en) * | 2013-01-17 | 2013-04-03 | 徐工集团工程机械股份有限公司道路机械分公司 | Method and system for controlling position of leveling cylinder piston at stating stage of paver |
| CN204703045U (en) * | 2015-05-25 | 2015-10-14 | 徐工集团工程机械股份有限公司道路机械分公司 | A kind of freely-moving mangle section difference synchronizing controls |
| CN205954458U (en) * | 2016-08-15 | 2017-02-15 | 徐工集团工程机械股份有限公司道路机械分公司 | Poor automatic adjustment controlling means of flexible screed section of " article " font |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10317317A (en) * | 1997-05-16 | 1998-12-02 | Sumitomo Constr Mach Co Ltd | Automatic step adjustment device of asphalt finisher and the like |
| CN1743552A (en) * | 2004-08-31 | 2006-03-08 | 卡特彼勒铺筑材料产品股份有限公司 | Paving machine output monitoring system |
| CN201358433Y (en) * | 2009-02-16 | 2009-12-09 | 朱存玉 | Segment difference automatic adjustment mechanism of telescopic ironing board of spreading machine |
| CN102926313A (en) * | 2012-11-20 | 2013-02-13 | 中联重科股份有限公司 | Screed height-difference adjusting device, paver and screed high-difference adjusting method |
| CN103015301A (en) * | 2013-01-17 | 2013-04-03 | 徐工集团工程机械股份有限公司道路机械分公司 | Method and system for controlling position of leveling cylinder piston at stating stage of paver |
| CN204703045U (en) * | 2015-05-25 | 2015-10-14 | 徐工集团工程机械股份有限公司道路机械分公司 | A kind of freely-moving mangle section difference synchronizing controls |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113924395A (en) * | 2019-03-29 | 2022-01-11 | 住友建机株式会社 | Asphalt rolling and leveling machine |
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Application publication date: 20161109 |
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