CN201924259U - Road roller - Google Patents

Road roller Download PDF

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Publication number
CN201924259U
CN201924259U CN2010206671168U CN201020667116U CN201924259U CN 201924259 U CN201924259 U CN 201924259U CN 2010206671168 U CN2010206671168 U CN 2010206671168U CN 201020667116 U CN201020667116 U CN 201020667116U CN 201924259 U CN201924259 U CN 201924259U
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CN
China
Prior art keywords
wheel
road roller
oil
road
reversal valve
Prior art date
Application number
CN2010206671168U
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Chinese (zh)
Inventor
周保刚
林栋冰
陆昕
Original Assignee
徐工集团工程机械股份有限公司科技分公司
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Priority to CN2010206671168U priority Critical patent/CN201924259U/en
Application granted granted Critical
Publication of CN201924259U publication Critical patent/CN201924259U/en

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Abstract

The utility model discloses a road roller which comprises a pinch roller frame and a vibrating wheel arranged in the pinch roller frame. The road roller is characterized by further comprising wheels and a lifting device for controlling the wheels to lift relative to the vibrating wheel, and the wheels are connected with the pinch roller frame by the lifting device. When the road roller is in a working state, the lifting device can be lifted to retract the wheels and the vibrating wheel works. When the road roller is necessary to transfer and transport, the lifting device descends the wheels and ascends the vibrating wheel away from a road surface so that the wheels and back wheels together achieve the walking of the road roller. Therefore, the automatic driving function is achieved; a special transporting tool for transferring the road roller is not needed; and the time and the cost are saved for a user.

Description

A kind of road roller
Technical field
The utility model relates to technical field of engineering machinery, particularly a kind of road roller.
Background technology
Road roller is a requisite machinery equipment when building highway, and wherein single vibratory road roller is a kind of road roller that is used for the compacted subgrade material.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is a kind of structural representation of typical single vibratory road roller; Fig. 2 is the structural representation of pinch roller framework among Fig. 1.
The single vibratory road roller car load partly is made up of driver's cabin 500, back vehicle frame 300, tire 400, vibrating wheels 200, pinch roller framework 100 etc. usually.Back vehicle frame 300 is positioned at the rear portion of car load, its both sides all are provided with tire 400, back vehicle frame 300 is hinged by jointed shaft with the pinch roller framework 100 that is positioned at the car load front portion, pinch roller framework 100 partly is made up of left plate 101, right plate 104, the back rest 102, front-axle beam 103 etc., vibrating wheels 200 is installed between two side plates of pinch roller framework 100, and vibrating wheels 200 is generally the steel roller.
Back vehicle frame 300 is equipped with motor, and for car load provides power, car load relies on the scrolling realization walking of tire 400 and vibrating wheels 200; During work, produce vibration, to realize to being compacted the compacting of material by vibrating wheels 200.
The vibration of car load, function such as drive and turn to all can realize by hydraulic system.Fluid power system mainly is made up of CD-ROM drive motor, driving pump, and power passes to CD-ROM drive motor by driving pump, and CD-ROM drive motor drives tire 400, realizes that car load travels.Hydraulic vibrating system mainly is made up of oscillating column pump, vibrating motor, and power passes to vibrating motor by oscillating column pump, and vibrating motor drives vibrating wheels 200 inner coupled vibration structures and realizes vibration.Hydraulic steering system mainly by turning to oil cylinder, steering pump, steering gear etc. to form, provides power by steering pump, turns to cylinder action through steering gear control, turns to oil cylinder to drive back vehicle frame 300 and 100 actions of pinch roller framework, realizes turning to.
Because vibrating wheels 200 is steel rollers, steel wheel destroys the road surface when preventing to travel, and pertinent regulations do not allow steel wheel directly to travel on highway, therefore, single vibratory road roller needs the vehicle haul when shifting the building site, the transport process complexity, especially when short distance was transported, transhipment is inconvenience more, and, when using the general wagon transhipment, also need crane to lift road roller, increased construction cost.
Therefore, how to provide that a kind of to transport easy road roller be those skilled in the art's technical issues that need to address.
The utility model content
The purpose of this utility model is for providing a kind of road roller, and this road roller can use the wheel that is installed on the pinch roller framework to travel, thereby realize the transhipment voluntarily of road roller car load easily when shifting the work-yard.
For solving the problems of the technologies described above, the utility model provides a kind of road roller, comprise the pinch roller framework and be installed on the interior vibrating wheels of described pinch roller framework, also comprise wheel and drive the lifting gear of described wheel that described wheel is connected with described pinch roller framework by described lifting gear with respect to the lifting of described vibrating wheels in the vertical direction.
Preferably, the front-axle beam of described pinch roller framework and the back rest all are connected with described wheel.
Preferably, described lifting gear comprises hoist cylinder, and the described front-axle beam and the described back rest all are fixedly connected with described hoist cylinder, and the piston rod of described hoist cylinder is provided with down, and the lower end of described piston rod is connected with described wheel.
Preferably, the front-axle beam of described pinch roller framework and the back rest are respectively equipped with the installing hole that vertically extends, and described hoist cylinder is fixedly installed in the described installing hole.
Preferably, described lifting gear also comprises installing plate, and described installing plate has the through hole that extends along thickness direction, and the cylinder barrel of described hoist cylinder is fixed in the described through hole, and described installing plate is fixedly installed in the described installing hole.
Preferably, described lifting gear also comprises urceolus, and the cylinder barrel suit of described hoist cylinder is fixed in the described urceolus, and the hole wall of described urceolus and described through hole is fixed.
Preferably, the described front-axle beam and the described back rest are installed two described wheels respectively.
Preferably, the oil-feed oil circuit that turns to executive component of described road roller is provided with first reversal valve, and when described first reversal valve was in first operating position, the oil-out of described steering power element was communicated with the described executive component that turns to; When described first reversal valve was in second operating position, the oil-out of described steering power element was communicated with the oil-in of described hoist cylinder.
Preferably, the oil-feed oil circuit of the vibration actuator of described road roller is provided with second reversal valve, and when described second reversal valve was in first operating position, the oil-out of described vibration dynamical element was communicated with described vibration actuator; When described second reversal valve was in second operating position, the oil-out of described vibration dynamical element was communicated with the oil-in of described driving executive component.
Preferably, described first reversal valve and described second reversal valve are solenoid operated directional valve.
Road roller provided by the utility model comprises the wheel that is connected with the pinch roller framework, and wheel can be by lifting gear with respect to the vibrating wheels lifting.When this road roller is in running order, when promptly vibrating wheels needs the vibratory compaction material, make the lifting gear withdrawal wheel that hoists, at this moment, the floor level position of wheel is higher than the floor level position of vibrating wheels, and then wheel does not contact with ground, vibrating wheels work; Road roller need be cut to when transportation, and lifting gear decline wheel makes the floor level position of wheel be lower than the floor level position of vibrating wheels, and then wheel contacts with the road surface, and vibrating wheels is lifted away from the road surface, and wheel and rear wheel are realized the walking of road roller jointly.Therefore, the road roller in this embodiment can be realized driving functions voluntarily by the wheel that is connected in the pinch roller framework, need not special vehicle and shifts road roller, for the user has saved time and cost.
Description of drawings
Fig. 1 is a kind of structural representation of typical single vibratory road roller;
Fig. 2 is the structural representation of pinch roller framework among Fig. 1;
Fig. 3 is the structural representation of first kind of specific embodiment of road roller that the utility model provides
Figure; Fig. 4 is the structural representation of pinch roller framework among Fig. 3;
Fig. 5 is the structural representation of wheel and lifting gear thereof in second kind of specific embodiment of road roller that the utility model provides;
Fig. 6 provides turning to and wheel lifting hydraulic system principle figure of the third specific embodiment of road roller for the utility model;
Fig. 7 is driven and the vibratory hydraulic system schematic diagram by the utility model provides in the 4th kind of specific embodiment of road roller.
The specific embodiment
Core of the present utility model is for providing a kind of road roller, and this road roller can use the wheel that is installed on the pinch roller framework to travel, thereby realize the transhipment voluntarily of road roller car load easily when shifting the work-yard.
In order to make those skilled in the art understand the technical solution of the utility model better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 3, Fig. 3 is the structural representation of first kind of specific embodiment of road roller that the utility model provides; Fig. 4 is the structural representation of pinch roller framework among Fig. 3.
Single vibratory road roller in this embodiment comprises pinch roller framework 1, and pinch roller framework 1 comprises two blocks of side plates, and promptly first side plate 11 and second side plate 14 also comprise the front-axle beam 13 and the back rest 12, and vibrating wheels 2 is installed between first side plate 11 and second side plate 14; Also comprise wheel 3, wheel 3 is connected with pinch roller framework 1 by lifting gear, and lifting gear can drive wheel 3 with respect to vibrating wheels 2 in the vertical direction liftings.
Can be accomplished in several ways the lifting of wheel 3, such as, lifting gear can comprise connecting rod, wheel 3 can be connected with an end of connecting rod, the other end of connecting rod and pinch roller framework 1 are hinged, connecting rod can be rotated along perpendicular, and two pin-and-holes are set on pinch roller framework 1, when connecting rod turns to horizontal level, connecting rod is fixing by the bearing pin and the pinch roller framework 1 that insert respective pin hole, at this moment, wheel 3 is retracted in the pinch roller framework 1, and promptly wheel 3 hoists; When connecting rod turns to vertical position, connecting rod is fixing by bearing pin and pinch roller framework 1, length that can the control connection bar, when making it be in vertical state, wheel 3 can be along ground surface, be that wheel 3 descends, and the floor level position of wheel 3 will be lower than the floor level position of vibrating wheels 2, vibrating wheels 2 is lifted away from ground.
Need to prove, as herein described vertically and notion such as level all be benchmark with the road surface, the parallel level that is with the road surface, be vertically vertical with the road surface.
When this road roller was in running order, promptly vibrating wheels 2 needed the vibratory compaction material, lifting gear is hoisted regain wheel 3, and at this moment, the floor level position of wheel 3 is higher than the floor level position of vibrating wheels 2, and then wheel 3 does not contact with ground, vibrating wheels 2 work; When road roller need be cut to transportation, lifting gear decline wheel 3 makes the floor level position of wheel 3 be lower than the floor level position of vibrating wheels 2, and then wheel 3 contacts with the road surface, and vibrating wheels 2 is lifted away from the road surface, and wheel 3 and rear wheel are realized the walking of road roller jointly.Therefore, the road roller in this embodiment can be realized driving functions voluntarily by the wheel 3 that is connected in pinch roller framework 1, need not special vehicle and shifts road roller, for the user has saved time and cost.
Can on the front-axle beam 13 of pinch roller framework 1 and the back rest 12, wheel 3 be set all.As shown in Figure 3, wheel 3 is arranged on the front-axle beam 13 and the back rest 12 of pinch roller framework 1, can increase the width of car load, thereby keep good road ability; The front-axle beam 13 and the back rest 12 all are provided with wheel 3, the stability of car body in the time of can also improving car load and travel voluntarily; And, since vibrating wheels 2 normally steel material make, weight is bigger, when the wheel 3 of the front-axle beam 13 and the back rest 12 contacts the road surface, can more reposefully the vibrating wheels 2 that mediates be lifted away from ground.
Please refer to Fig. 5, Fig. 5 is the structural representation of wheel and lifting gear thereof in second kind of specific embodiment of road roller that the utility model provides.
Lifting gear can comprise hoist cylinder 4, the cylinder barrel of hoist cylinder 4 can be fixed in the front-axle beam 13 and the back rest 12, the piston rod 41 of hoist cylinder 4 is provided with down, the lower end of piston rod 41 is connected with wheel 3, when piston rod 41 was made stretching motion, wheel 3 moved up and down, certainly, wheel 3 is movable the connection with piston rod 41, can also roll when promptly wheel 3 is connected with piston rod 41; Rationally control the specification and the stroke of hoist cylinder 4, when guaranteeing that piston rod 41 stretches out fully, the floor level position of wheel 3 is lower than the floor level position of vibrating wheels 2, and promptly vibrating wheels 2 will be lifted away from the road surface along with lifting of pinch roller framework 1, and wheel 3 is supported on the road surface, live car body with the rear wheel together support, vibrating wheels 2 breaks away from the road surface, is rolled by wheel 3 and travels, and then the operation of car load is not limited by relevant regulations, at this moment, the lifting gear wheel 3 that hoists; When piston rod 41 was withdrawn fully, the floor level position of wheel 3 was higher than the floor level position of vibrating wheels 2, and then wheel 3 does not contact the road surface, is in off working state, and vibrating wheels 2 contacts with the road surface this moment, can the vibratory compaction material, i.e. and lifting gear decline wheel 3.
Realize the rise of wheels 3 and fall by hoist cylinder 4, easy operating and working control, and the stroke of hoist cylinder 4 has continuity, can accurately piston rod 41 be rested on preposition by parts such as hydraulic lock, thereby accurately controls the operating position of wheel 3; And, hoist cylinder 4 can be according to road conditions and other situations, adjust the flexible distance of piston rod 41 neatly, and then the height of adjustment wheel 3, to adapt to different environment or to remedy the error of assembling, guarantee the wheel 3 of the front-axle beam 13 and the back rest 12 and the uniformity of rear wheel position, thereby cooperate the walking that realizes car load with rear wheel.
Can the installing hole that vertically extends be set respectively at the front-axle beam 13 of pinch roller framework 1 and the back rest 12, first installing hole 121 as shown in Figure 4 and second installing hole 131, and the cylinder barrel of hoist cylinder 4 is fixedly installed in the installing hole.Then hoist cylinder 4 is made stretching motion along the axis of installing hole, and same wheel 3 also is on the axis of installing hole.This kind mounting means can more reliably be fixed on hoist cylinder 4 on the pinch roller framework 1 easily, and the shared space of made full use of front-axle beam 13 and the back rest 12, reduces the restriction to the miscellaneous part installing space; In addition, the front-axle beam 13 and the back rest 12 have certain width, therefore, are connected the installing hole easy operating of lifting gear with processing on the back rest 12 at front-axle beam 13.
Lifting gear can also comprise urceolus 5 and installing plate 6, as shown in Figure 5, the cylinder barrel suit of hoist cylinder 4 can be fixed in the urceolus 5, and the diapire of urceolus 5 has the perforate that passes for piston rod 41, and then piston rod 41 can stretch; On installing plate 6, process through hole, urceolus 5 is fixing with installing plate 6, the inwall of through hole on the outer wall of urceolus 5 and the installing plate 6 can be welded fixing, realization easily on the operation, and weld fixed; Again installing plate 6 is fixed in the installing hole place, hoist cylinder 4 can be fixed in the installing hole.Hoist cylinder 4 is set in the urceolus 5, and urceolus 5 can play the effect of protection to hoist cylinder 4; And with respect to directly the cylinder barrel and the installing hole place of urceolus 5 or hoist cylinder 4 being fixed, the installation procedure of installing plate 6 is easier to practical operation, can easily and reliably hoist cylinder 4 be fixed in the installing hole.
Can two wheels 3 be installed respectively at the front-axle beam 13 and the back rest 12.As shown in Figure 4, on the front-axle beam 13 and the back rest 12, be respectively equipped with two installing holes, the position of two installing holes can be distributed in the two ends of the front-axle beam 13 and the back rest 12, and make of the axial symmetrical distribution of the position of mounting hole of the front-axle beam 13 and the back rest 12 along car body, the wheel 3 that then has four symmetrical distributions on the pinch roller framework 1 can evenly be born the weight of car body, and support more stable, thereby guarantee the stability that car load travels, improve the safety factor of car load operation.
Please refer to Fig. 6, Fig. 6 provides turning to and wheel lifting hydraulic system principle figure of the third specific embodiment of road roller for the utility model.
The steering of road roller generally includes steering gear, steering power element and turns to executive component etc., steering power element and to turn to executive component can be respectively steering pump shown in Figure 69 and turn to oil cylinder 8, provide power by steering pump 9, turn to oil cylinder 8 actions through steering gear 10 controls, thereby turn to oil cylinder 8 to make stretching motion and drive back vehicle frame 15 and 1 action of pinch roller framework, realize turning to.Can turn to when first reversal valve, 7, the first reversal valves 7 being set on the oil-feed oil circuit of executive component being in first operating position, the oil-out of steering power element is communicated with turning to executive component; When first reversal valve 7 was in second operating position, the oil-out of steering power element was communicated with the oil-in of hoist cylinder 4.As shown in Figure 6, when road roller need shift the place, can switch the duty of first reversal valve 7, make first reversal valve 7 be in second operating position, then steering pump 9 can be realized the lifting of hoist cylinder 4 to hoist cylinder 4 fuel feeding, and then wheel 3 is descended, vibrating wheels 2 is lifted away from ground, and wheel 3 can be along road traveling; In the process of moving, again first reversal valve 7 is switched to first operating position, then steering pump 9 is to turning to oil cylinder 8 fuel feeding, thereby realizes turning to normally function.
The power source of hoist cylinder 4 can utilize the steering power element on the former car in this embodiment, only need on former steering loop, to increase by first reversal valve 7, can realize the conversion of power oil-duct, simplified the oil circuit design, control production cost of products effectively, realized the lifting of hoist cylinder 4 easily.
First reversal valve 7 can be solenoid operated directional valve, and then by electrical control system, operating personnel can control the lifting of turning to of car body or hoist cylinder 4 comparatively easily.
Please refer to Fig. 7, Fig. 7 is driven and the vibratory hydraulic system schematic diagram by the utility model provides in the 4th kind of specific embodiment of road roller.
Speed control when road roller travels comprises driving executive component and driving dynamical element mainly by fluid power system control, drives executive component and drive dynamical element to be respectively CD-ROM drive motor 20 and driving pump 19 shown in Figure 7; The vibration of vibrating wheels 2 is mainly controlled by hydraulic vibrating system, involving vibrations executive component and vibration dynamical element, and vibration actuator and vibration dynamical element can be respectively vibrating motor 16 and oscillating column pump 17.Can make when on the oil-feed oil circuit of vibrating motor 16 of road roller second reversal valve, 18, the second reversal valves 18 being set and being in first operating position, the oil-out of vibration dynamical element is communicated with vibration actuator; When second reversal valve 18 was in second operating position, the oil-out of vibration dynamical element was communicated with the oil-in that drives executive component.As shown in Figure 7, when second reversal valve 18 was in first operating position, driving pump 19 and oscillating column pump 17 were worked respectively, and for CD-ROM drive motor 20 and vibrating motor 16 provide hydraulic oil, at this moment, the vibrating wheels 2 of road roller can be carried out compacting to material; When needs travel on highway, vibrating wheels 2 is in off working state, then oscillating column pump 17 need not to provide hydraulic oil to vibrating motor 16, can make second reversal valve 18 be in second operating position, the hydraulic oil input CD-ROM drive motor 20 of oscillating column pump 17, then driving pump 19 is realized the double pump interflow with oscillating column pump 17, provide power for CD-ROM drive motor 20 jointly, hydraulic pressure oil mass by CD-ROM drive motor 20 is the flow sum of oscillating column pump 17 and driving pump 19, the rotating speed of CD-ROM drive motor 20 is improved, thereby realizes running at high speed of car load.Second reversal valve 18 also can be solenoid operated directional valve, realizes the electrified control automatically of car load dynamical system, is convenient to operating personnel and controls.
More than a kind of road roller provided by the utility model is described in detail.Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.

Claims (10)

1. road roller, comprise pinch roller framework (1) and be installed on the interior vibrating wheels (2) of described pinch roller framework (1), it is characterized in that, also comprise wheel (3) and drive the lifting gear of described wheel (3) that described wheel (3) is connected with described pinch roller framework (1) by described lifting gear with respect to described vibrating wheels (2) in the vertical direction lifting.
2. road roller according to claim 1 is characterized in that, the front-axle beam (13) and the back rest (12) of described pinch roller framework (1) all are connected with described wheel (3).
3. road roller according to claim 2, it is characterized in that, described lifting gear comprises hoist cylinder (4), described front-axle beam (13) all is fixedly connected with described hoist cylinder (4) with the described back rest (12), the piston rod (41) of described hoist cylinder (4) is provided with down, and the lower end of described piston rod (41) is connected with described wheel (3).
4. road roller according to claim 3 is characterized in that, the front-axle beam (13) of described pinch roller framework (1) and the back rest (12) are respectively equipped with the installing hole that vertically extends, and described hoist cylinder (4) is fixedly installed in the described installing hole.
5. road roller according to claim 4, it is characterized in that, described lifting gear also comprises installing plate (6), described installing plate (6) has the through hole that extends along thickness direction, the cylinder barrel of described hoist cylinder (4) is fixed in the described through hole, and described installing plate (6) is fixedly installed in the described installing hole.
6. road roller according to claim 5 is characterized in that, described lifting gear also comprises urceolus (5), and the cylinder barrel suit of described hoist cylinder (4) is fixed in the described urceolus (5), and described urceolus (5) is fixed with the hole wall of described through hole.
7. road roller according to claim 6 is characterized in that, the described front-axle beam (13) and the described back rest (12) are installed two described wheels (3) respectively.
8. according to each described road roller of claim 3 to 7, it is characterized in that, the oil-feed oil circuit that turns to executive component of described road roller is provided with first reversal valve (7), when described first reversal valve (7) was in first operating position, the oil-out of described steering power element was communicated with the described executive component that turns to; When described first reversal valve (7) was in second operating position, the oil-out of described steering power element was communicated with the oil-in of described hoist cylinder (4).
9. according to each described road roller of claim 3 to 7, it is characterized in that, the oil-feed oil circuit of the vibration actuator of described road roller is provided with second reversal valve (18), when described second reversal valve (18) was in first operating position, the oil-out of described vibration dynamical element was communicated with described vibration actuator; When described second reversal valve (18) was in second operating position, the oil-out of described vibration dynamical element was communicated with the oil-in that drives executive component.
10. road roller according to claim 9 is characterized in that, described first reversal valve (7) and described second reversal valve (18) are solenoid operated directional valve.
CN2010206671168U 2010-12-17 2010-12-17 Road roller CN201924259U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206671168U CN201924259U (en) 2010-12-17 2010-12-17 Road roller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206671168U CN201924259U (en) 2010-12-17 2010-12-17 Road roller

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Publication Number Publication Date
CN201924259U true CN201924259U (en) 2011-08-10

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CN2010206671168U CN201924259U (en) 2010-12-17 2010-12-17 Road roller

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102086626A (en) * 2010-12-17 2011-06-08 徐工集团工程机械股份有限公司科技分公司 Road roller
CN102673537A (en) * 2012-05-30 2012-09-19 中联重科股份有限公司 Transferring device and transferring method for engineering machinery vehicle
CN102817303A (en) * 2012-08-09 2012-12-12 恒天九五重工有限公司 Consignment-free type single steel wheel vibration roller
CN103498463A (en) * 2013-10-19 2014-01-08 黄肖峰 Rolling equipment
CN104831605A (en) * 2015-02-12 2015-08-12 陈道田 Subgrade and pavement compacted edge vertical-die-free construction assistant mechanical device
CN105297596A (en) * 2015-11-20 2016-02-03 长安大学 Small free steering double-steel wheel vibratory roller
CN109898426A (en) * 2019-04-02 2019-06-18 广西长长路桥建设有限公司 A kind of road and bridge construction road smoothing device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102086626A (en) * 2010-12-17 2011-06-08 徐工集团工程机械股份有限公司科技分公司 Road roller
CN102086626B (en) * 2010-12-17 2012-11-21 徐工集团工程机械股份有限公司科技分公司 Road roller
CN102673537A (en) * 2012-05-30 2012-09-19 中联重科股份有限公司 Transferring device and transferring method for engineering machinery vehicle
CN102817303A (en) * 2012-08-09 2012-12-12 恒天九五重工有限公司 Consignment-free type single steel wheel vibration roller
CN103498463A (en) * 2013-10-19 2014-01-08 黄肖峰 Rolling equipment
CN103498463B (en) * 2013-10-19 2015-04-08 黄肖峰 Rolling equipment
CN104831605A (en) * 2015-02-12 2015-08-12 陈道田 Subgrade and pavement compacted edge vertical-die-free construction assistant mechanical device
CN104831605B (en) * 2015-02-12 2019-05-07 陈道田 Subgrade and pavement is compacted edge and helps mechanical equipment without formwork erection construction paving
CN105297596A (en) * 2015-11-20 2016-02-03 长安大学 Small free steering double-steel wheel vibratory roller
CN109898426A (en) * 2019-04-02 2019-06-18 广西长长路桥建设有限公司 A kind of road and bridge construction road smoothing device

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Granted publication date: 20110810

Effective date of abandoning: 20130306