CN109468922B - Spreading machine - Google Patents
Spreading machine Download PDFInfo
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- CN109468922B CN109468922B CN201811215019.2A CN201811215019A CN109468922B CN 109468922 B CN109468922 B CN 109468922B CN 201811215019 A CN201811215019 A CN 201811215019A CN 109468922 B CN109468922 B CN 109468922B
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- telescopic
- assembly
- basic
- screed
- ironing board
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- 230000007480 spreading Effects 0.000 title description 2
- 238000010409 ironing Methods 0.000 claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
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Classifications
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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 paver, wherein an ironing device of the paver comprises a basic ironing board assembly, a telescopic ironing board assembly and a telescopic mechanism, wherein the telescopic ironing board assembly is telescopically arranged on one side of the basic ironing board assembly; the basic screed plate component is arranged on the vehicle body; the ironing device has a first mode and a second mode, in the first mode, the telescopic ironing board component can be directly arranged on the side wall of the basic ironing board component, so that the front sides of the basic ironing board component and the telescopic ironing board component are in the same plane; in a second mode, the telescoping screed plate assembly is mountable to the basic screed plate assembly by a telescoping mechanism to approach or move away from the basic screed plate assembly upon actuation of the telescoping mechanism. The invention can effectively improve the maximum paving thickness of the screed plate, avoid the seam steps between the basic screed plate and the telescopic screed plate and improve the flatness of the paved road surface. The paving machine can meet various construction conditions and reduce the use cost of equipment.
Description
Technical Field
The invention relates to the technical field of pavers, in particular to a paver.
Background
At present, the existing telescopic paver has the advantages of large real-time paving width adjustment range, short screed disassembly and assembly preparation time and the like. However, in the actual use process, the basic screed and the telescopic screed of the telescopic paver are staggered front and back in the driving direction, so that the maximum paving thickness of the paver is influenced, steps are easily generated at the lap joint of the basic screed and the telescopic screed, and the flatness of a paved road surface is influenced.
Disclosure of Invention
The invention aims to overcome the problems in the prior art, and provides a paver which can effectively improve the maximum paving thickness of a screed, avoid seam steps between a basic screed and a telescopic screed and improve the flatness of a paved road surface. The paving machine can meet various construction conditions and reduce the use cost of equipment.
In order to achieve the purpose, the invention provides a paver which comprises a vehicle body and an ironing device, wherein the ironing device is connected to the vehicle body and comprises a basic ironing board assembly, a telescopic ironing board assembly and a telescopic mechanism, wherein the telescopic ironing board assembly is telescopically arranged on one side of the basic ironing board assembly, and the telescopic mechanism is used for driving the telescopic ironing board assembly to stretch and retract; the basic screed plate component is mounted to the vehicle body; the ironing device has a first mode in which the retractable screed plate assembly is directly mountable to the side wall of the basic screed plate assembly such that the front sides of the basic screed plate assembly and the retractable screed plate assembly are in the same plane; in the second mode, the retractable screed plate assembly is mountable to the basic screed plate assembly by the retractable mechanism to move towards or away from the basic screed plate assembly under the drive of the retractable mechanism.
Preferably, the telescopic mechanism comprises a connecting pin, the telescopic screed plate assembly is provided with a pin hole matched with the connecting pin, and the telescopic screed plate assembly is detachably connected to the telescopic mechanism through matching of the connecting pin and the pin hole.
Preferably, the telescopic mechanism comprises a guide rod, a side plate and a first driving cylinder; one end of the guide rod is fixedly connected with the side plate, and the other end of the guide rod movably penetrates through the basic ironing board assembly along the length direction of the guide rod; the first driving cylinder is installed on the basic ironing board assembly and is parallel to the guide rod, a piston rod of the first driving cylinder is connected to the side plate to drive the side plate and the guide rod to move along the length direction of the guide rod, and the connecting pin is installed on the guide rod to move along with the guide rod.
Preferably, the telescopic mechanism comprises a second driving cylinder, the guide rod comprises a first guide rod and a second guide rod, and the side plate comprises a first side plate and a second side plate; the piston rod of the first driving cylinder is connected to the first side plate; the first guide rod and the second guide rod are parallel to each other and are fixedly arranged on the first side plate; the connecting pin is arranged on the second side plate, and the second side plate is movably arranged on the second guide rod along the length direction of the second guide rod; the second driving cylinder is arranged on the first side plate, and a piston rod of the second driving cylinder is connected to the second side plate to drive the second side plate to move along the length direction of the second guide rod.
Preferably, the pin hole is adjustable in level with respect to a bottom surface of the telescopic screed plate assembly.
Preferably, the telescopic screed plate assembly comprises a height difference adjusting mechanism, the height difference adjusting mechanism comprises a connecting rod and a lead screw, one end of the connecting rod is hinged to a nut of the lead screw, and the other end of the connecting rod is provided with the pin hole; the distance between the pin hole and the bottom surface of the telescopic screed plate assembly is adjusted through the movement of the nut on the lead screw.
Preferably, the connecting rod comprises a first connecting rod and a second connecting rod, and the nut comprises a first nut and a second nut; one end of the first connecting rod and one end of the second connecting rod are hinged to the first screw nut and the second screw nut respectively, and the rotating directions of the threads of the first screw nut and the second screw nut are opposite.
Preferably, the side wall of the basic screed plate assembly is provided with a threaded connection hole, and the telescopic screed plate assembly is connected to the threaded connection hole through a bolt, so that the front sides of the basic screed plate assembly and the telescopic screed plate assembly are in the same plane.
Preferably, the screed means comprises an elongate screed plate assembly connected to an end of the telescopic screed plate assembly which is remote from the basic screed plate assembly in the direction of extension.
Preferably, the two sides of the basic ironing board assembly are respectively and symmetrically provided with the telescopic ironing board assemblies, and each telescopic ironing board assembly is driven to be telescopic by one telescopic mechanism.
Through the technical scheme, the ironing device can be switched between the first mode and the second mode, and in the first mode, because the telescopic ironing board assembly can be directly installed on the side wall of the basic ironing board assembly, the front sides of the basic ironing board assembly and the telescopic ironing board assembly are kept on the same plane, so that the problem that steps are generated at the lap joint of the basic ironing board assembly and the telescopic ironing board assembly can be prevented, and the flatness of a paved road surface is improved. In the second mode, because flexible screed board subassembly can pass through telescopic machanism install in basically screed board subassembly, telescopic machanism can drive flexible screed board subassembly is flexible, consequently, the paver can adapt to the road surface operating mode of different width under the second mode. The paver of the invention can be flexibly switched between the first mode and the second mode, thereby being suitable for different paving working conditions.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment of an ironing device of a paving machine of the present invention;
FIG. 2 is a schematic illustration of the basic screed plate assembly, telescoping screed plate assembly and telescoping mechanism connections of the present invention;
FIG. 3 is a schematic structural view of a preferred embodiment of the telescoping mechanism of the present invention;
FIG. 4 is a schematic structural view of a preferred embodiment of the telescoping screed plate assembly of the present invention;
figure 5 is a schematic view of the basic screed plate assembly and the telescopic screed plate assembly of the present invention, which are connected by bolts.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1 to 5, the paver of the present invention comprises a vehicle body and a screed device, wherein the screed device is connected to the vehicle body, and the screed device comprises a basic screed plate assembly 10, a telescopic screed plate assembly 20 telescopically arranged at one side of the basic screed plate assembly 10, and a telescopic mechanism 30 for driving the telescopic screed plate assembly 20 to extend and retract; the basic screed plate assembly 10 is mounted to the vehicle body; the screed apparatus has a first mode in which the telescopic screed plate assembly 20 is directly mountable to the side walls of the basic screed plate assembly 10 such that the front sides of the basic screed plate assembly 10 and the telescopic screed plate assembly 20 are in the same plane; in a second mode, the telescoping screed plate assembly 20 is mountable to the basic screed plate assembly 10 by the telescoping mechanism 30 to move closer to or away from the basic screed plate assembly 10 upon actuation of the telescoping mechanism 30.
Through above-mentioned technical scheme, the ironing device can switch between first mode and second mode, and in first mode, because flexible screed subassembly 20 can direct mount in the lateral wall of basic screed subassembly 10, this just makes basic screed subassembly 10 and the front side of flexible screed subassembly 20 keep at the coplanar to can prevent that basic screed subassembly 10 and flexible screed subassembly 20's overlap joint from producing the problem of step, improve the roughness of the road surface that paves. In the second mode, since the retractable screed assembly 20 can be mounted to the basic screed assembly 10 through the retractable mechanism 30, the retractable mechanism 30 can drive the retractable screed assembly 20 to retract, and thus, the paver may adapt to road conditions of different widths in the second mode. The paver of the invention can be flexibly switched between the first mode and the second mode, thereby being suitable for different paving working conditions.
In the first mode, the telescoping mechanism 30 needs to be disengaged from the telescoping screed assembly 20 so that the telescoping screed assembly 20 is not affected by the telescoping mechanism 30 and the telescoping mechanism 30 can be fully retracted into the basic screed assembly 10. In order to conveniently and rapidly assemble and disassemble the telescopic mechanism 30 with the telescopic screed plate assembly 20, it is preferable that the telescopic mechanism 30 includes a connecting pin 31, the telescopic screed plate assembly 20 is provided with a pin hole 21 matched with the connecting pin 31, and the telescopic screed plate assembly 20 is detachably connected to the telescopic mechanism 30 through the matching of the connecting pin 31 and the pin hole 21.
It should be understood that the telescoping mechanism 30 may be provided in various forms as long as it can drive the telescoping screed plate assembly 20 to telescope, and in a preferred embodiment of the present invention, the telescoping mechanism 30 includes a guide bar, a side plate, and a first drive cylinder 32; one end of the guide rod is fixedly connected with the side plate, and the other end of the guide rod movably penetrates through the basic ironing board assembly 10 along the length direction of the guide rod; a first driving cylinder 32 is installed at the basic screed assembly 10 and is parallel to the guide bar, a piston rod of the first driving cylinder 32 is connected to the side plate to drive the side plate and the guide bar to move along the length direction of the guide bar, and a connecting pin 31 is installed at the guide bar to be capable of following the guide bar to move. Because the first driving cylinder 32 is installed in the basic screed plate assembly 10, the cylinder body is stationary relative to the basic screed plate assembly 10, the piston rod of the first driving cylinder 32 drives the side plate to reciprocate, the side plate drives the guide rod to reciprocate along the length direction thereof, and finally the connecting pin 31 connected to the guide rod reciprocates relative to the basic screed plate assembly 10, and drives the telescopic screed plate assembly 20 provided with the pin hole 21 matched with the connecting pin 31 to reciprocate, i.e., to be telescopic.
Generally, in the second mode, the telescopic mechanism 30 is required to be fully extended out of the basic screed assembly 10, and then the telescopic adjustment is performed on the telescopic screed assembly 20, and therefore, preferably, the telescopic mechanism 30 includes a second driving cylinder, the guide rods include a first guide rod 33 and a second guide rod 34, and the side plates include a first side plate 35 and a second side plate 36; the piston rod of the first drive cylinder 32 is connected to the first side plate 35; the first guide rod 33 and the second guide rod 34 are parallel to each other and are both fixedly arranged on the first side plate 35; the connecting pin 31 is arranged on the second side plate 36, and the second side plate 36 is movably arranged on the second guide rod 34 along the length direction of the second guide rod 34; a second driving cylinder is provided to the first side plate 35, and a piston rod of the second driving cylinder is connected to the second side plate 36 to drive the second side plate 36 to move along the length direction of the second guide bar 34. That is, the first side plate 35 is driven to extend or retract the basic screed assembly 10 by the first driving cylinder 32, and in the second mode, the first side plate 35 is normally fully extended out of the basic screed assembly 10, and then the second side plate 36 is driven to move along the second guide bar 34 by the second driving cylinder (not shown), so that the connecting pin 31 provided on the second side plate 36 can move along the second guide bar 34, thereby completing the telescopic work.
It should be understood that the first and second driving cylinders 32 and 32 may be provided in the form of a pneumatic cylinder, a hydraulic cylinder, or the like, as long as the piston rod can be driven to extend and contract.
In some conditions, it may be desirable to adjust the level of the bottom surface of the telescoping screed assembly 20 to ensure the flatness of the paving, and therefore, the pin holes 21 are preferably adjustable in level relative to the bottom surface of the telescoping screed assembly 20.
It should be appreciated that the pin holes 21 may be adjusted in various ways with respect to the bottom surface of the telescopic screed plate assembly 20, such as by means of electric, hydraulic cylinders, etc. In a preferred embodiment of the present invention, the telescopic screed plate assembly 20 comprises a height difference adjusting mechanism, the height difference adjusting mechanism comprises a connecting rod and a lead screw 24, one end of the connecting rod is hinged on a nut of the lead screw 24, and the other end of the connecting rod is provided with a pin hole 21; the distance between the pin hole 21 and the bottom surface of the telescopic screed plate assembly 20 is adjusted by the movement of the nut on the lead screw 24. As shown in fig. 4, the height difference adjusting mechanism includes four connecting rods (two first connecting rods 22 and two second connecting rods 23) and two pairs of lead screws 24, each pair of lead screws 24 is provided with a first nut and a second nut, the screw thread directions of the first nut and the second nut are opposite, the first nut on each lead screw 24 is hinged with one first connecting rod 22, and the second nut on each lead screw 24 is hinged with one second connecting rod 23, so that, under the condition that the lead screws 24 rotate, the first nut and the second nut can move oppositely or oppositely, the pin hole 21 at one end of the first connecting rod 22 and the pin hole 21 at one end of the second connecting rod 23 are matched with the connecting pin 31, the connecting pin 31 is limited to move only in the vertical direction, which makes the pin hole 21 at one end of the first connecting rod 22 and the pin hole 21 at one end of the second connecting rod 23 drive the connecting pin 31 to move downwards when the first nut and the second nut move oppositely, thereby reducing the distance between the pin hole 21 and the bottom surface of the telescopic screed plate assembly 20 and achieving the purpose of increasing the distance between the bottom surface of the telescopic screed plate assembly 20 and the ground. Conversely, the goal of reducing the distance between the bottom surface of the telescoping screed plate assembly 20 and the ground can be achieved.
In the first mode, the basic screed plate assembly 10 is required to be fixedly connected with the telescopic screed plate assembly 20 and make the front sides of the two be in the same plane, and the front sides of the two are always kept in the same plane when the paving work is performed, and therefore, it is preferable that the side wall of the basic screed plate assembly 10 is provided with the screw coupling hole 11, and the telescopic screed plate assembly 20 is coupled to the screw coupling hole 11 by the bolt 12, so that the front sides of the basic screed plate assembly 10 and the telescopic screed plate assembly 20 are in the same plane. It should be understood that the basic screed plate assembly 10 and the telescoping screed plate assembly 20 may be disassembled or assembled by other fasteners, which are not described in detail herein.
In some conditions, the extension of the telescopic screed plate assembly 20 may not be sufficient to accommodate the width of the road surface, and therefore, it is preferred that the screed apparatus include an elongate screed plate assembly 40, the elongate screed plate assembly 40 being attached to the end of the telescopic screed plate assembly 20 which is remote from the base screed plate assembly 10 in the direction of extension.
In order to ensure the smoothness and balance of the paver during the driving process, it is preferable that the two sides of the basic screed plate assemblies 10 are symmetrically provided with telescopic screed plate assemblies 20, respectively, and each telescopic screed plate assembly 20 is driven to be telescopic by one telescopic mechanism 30.
The paver of the invention can be flexibly switched between two modes, and in the first mode, the seam steps between the basic screed plate assembly 10 and the telescopic screed plate assembly 20 can be effectively avoided, and the flatness of the paved road surface is improved; in the second mode, the extension of the telescopic screed plate assembly 20 can be adjusted to suit the width of the road surface.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications may be made to the technical solution of the invention, and in order to avoid unnecessary repetition, various possible combinations of the invention will not be described further. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (7)
1. The paver is characterized by comprising a vehicle body and an ironing device, wherein the ironing device is connected to the vehicle body and comprises a basic ironing board assembly (10), a telescopic ironing board assembly (20) telescopically arranged on one side of the basic ironing board assembly (10) and a telescopic mechanism (30) for driving the telescopic ironing board assembly (20) to stretch and retract;
the basic screed plate assembly (10) is mounted to the vehicle body;
the ironing device has a first mode in which the retractable ironing board assembly (20) is directly mountable to a side wall of the basic ironing board assembly (10) such that the front sides of the basic ironing board assembly (10) and the retractable ironing board assembly (20) are in the same plane; in the second mode, the retractable screed plate assembly (20) is mountable to the basic screed plate assembly (10) by the retractable mechanism (30) to move towards or away from the basic screed plate assembly (10) upon actuation of the retractable mechanism (30);
wherein the telescoping mechanism (30) is configured to be retractable into the basic screed assembly (10) in the first mode; the telescopic mechanism (30) comprises a connecting pin (31), the telescopic ironing board component (20) is provided with a pin hole (21) matched with the connecting pin (31), and the telescopic ironing board component (20) is detachably connected to the telescopic mechanism (30) through the matching of the connecting pin (31) and the pin hole (21);
the telescopic mechanism (30) comprises a first guide rod (33), a second guide rod (34), a first side plate (35), a second side plate (36), a first driving cylinder (32) and a second driving cylinder; the first guide rod (33) and the second guide rod (34) are parallel to each other and are fixedly arranged on the first side plate (35); the first driving cylinder (32) is installed on the basic ironing board assembly (10) and is parallel to the first guide rod (33), and a piston rod of the first driving cylinder (32) is connected to the first side plate (35) to drive the first side plate (35) and the first guide rod (33) to move along the length direction of the first guide rod (33); the connecting pin (31) is arranged on the second side plate (36), and the second side plate (36) is movably arranged on the second guide rod (34) along the length direction of the second guide rod (34); the second driving cylinder is arranged on the first side plate (35), and a piston rod of the second driving cylinder is connected to the second side plate (36) to drive the second side plate (36) to move along the length direction of the second guide rod (34).
2. The paver of claim 1, characterized in that the pin holes (21) are adjustable in level relative to the bottom surface of the telescopic screed plate assembly (20).
3. The paver of claim 2, wherein the telescopic screed plate assembly (20) comprises a height difference adjusting mechanism, the height difference adjusting mechanism comprises a connecting rod and a lead screw (24), one end of the connecting rod is hinged to a nut of the lead screw (24), and the other end of the connecting rod is provided with the pin hole (21); the distance between the pin hole (21) and the bottom surface of the telescopic ironing board component (20) is adjusted through the movement of the nut on the lead screw (24).
4. The paver of claim 3, wherein the connecting rods comprise a first connecting rod (22) and a second connecting rod (23), the nuts comprising a first nut and a second nut; one ends of the first connecting rod (22) and the second connecting rod (23) are hinged to the first screw nut and the second screw nut respectively, and the thread turning directions of the first screw nut and the second screw nut are opposite.
5. The paver of claim 1, characterized in that the side walls of the basic screed plate assembly (10) are provided with threaded connection holes (11), the telescopic screed plate assembly (20) being connected to the threaded connection holes (11) by bolts (12) such that the front sides of the basic screed plate assembly (10) and the telescopic screed plate assembly (20) are in the same plane.
6. The paver of claim 1, characterized in that the screed arrangement comprises an elongate screed plate assembly (40), the elongate screed plate assembly (40) being connected to an end of the telescopic screed plate assembly (20) which is remote from the basic screed plate assembly (10) in the direction of extension.
7. The paver according to any one of claims 1 to 6, characterized in that the telescopic screed assemblies (20) are arranged symmetrically on both sides of the basic screed assembly (10), respectively, each telescopic screed assembly (20) being telescopic by actuation of one of the telescopic mechanisms (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811215019.2A CN109468922B (en) | 2018-10-18 | 2018-10-18 | Spreading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811215019.2A CN109468922B (en) | 2018-10-18 | 2018-10-18 | Spreading machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109468922A CN109468922A (en) | 2019-03-15 |
| CN109468922B true CN109468922B (en) | 2020-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811215019.2A Active CN109468922B (en) | 2018-10-18 | 2018-10-18 | Spreading machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN109468922B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468664B (en) * | 2019-07-30 | 2024-08-06 | 天津工程机械研究院有限公司 | Multi-camber adjusting screed and paver thereof |
| CN112064454A (en) * | 2020-09-21 | 2020-12-11 | 三一汽车制造有限公司 | Telescopic baffle, ironing plate and paver |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839592A (en) * | 2012-09-18 | 2012-12-26 | 中联重科股份有限公司 | Leveling device of paver, control method of leveling device and paver |
| CN205975312U (en) * | 2016-06-03 | 2017-02-22 | 中建路桥集团基础工程有限公司 | A paver for highway pavement repairing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2651292Y (en) * | 2003-09-28 | 2004-10-27 | 徐州工程机械科技股份有限公司路面机械分公司 | Mechanically assembled ironing plate with telescopic two ends |
| CN201372401Y (en) * | 2009-01-19 | 2009-12-30 | 中国农业机械化科学研究院 | Splicing mechanism and ironing device of paving machine with same |
| EP2218824B1 (en) * | 2009-02-16 | 2012-12-26 | Joseph Vögele AG | Screed |
| CN203782533U (en) * | 2014-03-12 | 2014-08-20 | 中国十七冶集团有限公司 | Elongated screed of asphalt paver |
| CN205557271U (en) * | 2016-04-07 | 2016-09-07 | 中交西安筑路机械有限公司 | Sub -base grader screed that stretches out and draws back |
-
2018
- 2018-10-18 CN CN201811215019.2A patent/CN109468922B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839592A (en) * | 2012-09-18 | 2012-12-26 | 中联重科股份有限公司 | Leveling device of paver, control method of leveling device and paver |
| CN205975312U (en) * | 2016-06-03 | 2017-02-22 | 中建路桥集团基础工程有限公司 | A paver for highway pavement repairing |
Also Published As
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|---|---|
| CN109468922A (en) | 2019-03-15 |
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