CN110273348A - A kind of asphalt pavement of highway leveling unit - Google Patents

A kind of asphalt pavement of highway leveling unit Download PDF

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Publication number
CN110273348A
CN110273348A CN201910602891.0A CN201910602891A CN110273348A CN 110273348 A CN110273348 A CN 110273348A CN 201910602891 A CN201910602891 A CN 201910602891A CN 110273348 A CN110273348 A CN 110273348A
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China
Prior art keywords
wall
asphalt pavement
highway
bolted
roller
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CN201910602891.0A
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CN110273348B (en
Inventor
王康杰
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Anhui Fengyuan Construction Engineering Co ltd
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Individual
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/23Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/26Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C2301/00Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/02Feeding devices for pavers

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)

Abstract

The invention belongs to highway construction technical fields, especially a kind of asphalt pavement of highway leveling unit, for the problem of existing apparatus manually levelling low efficiency and levelling norm controlling deficiency, now propose following scheme, including road roller, it is fixed on the side mounting disc of road roller two sides and the rear adjusting hanger of rear side, mounting disc described in two sides has been bolted side oscillation leveling mechanism, adjusts hanger after described and has been bolted rear dragging leveling mechanism.The present invention passes through road roller driving device, side oscillation leveling mechanism can control push-and-pull and several swings, make two sides road surface can realize synchronize it is levelling, rear dragging leveling mechanism guarantees that track has uneven or recess that can be added, feed supplement mechanism is by high-definition probe record path and rangefinder distance measurement feedback landform, and to asphalt filler at hollow, the indices after keeping bituminous pavement levelling are complied with standard, manpower is liberated simultaneously, improves highway construction efficiency.

Description

A kind of asphalt pavement of highway leveling unit
Technical field
The present invention relates to highway construction technical field more particularly to a kind of asphalt pavement of highway leveling units.
Background technique
Traditional asphalt mixture making construction usage " bamboo rake ", this rake are the bamboo bars for selecting about 15 centimetres of diameter, are cut 60 centimetres of length are taken, then is amputated the 1/3 of round thick bamboo tube section along thick bamboo tube direction with hacksaw, retains the 2/3 of thick bamboo tube, among thick bamboo tube At thick bamboo tube, about 3 centimetres of length of trapezoid-shaped openings are cut, wooden stock is connected with.Operate the wooden stock of human hand held It pushes and pulls asphalt and carries out the levelling construction of making." bamboo rake " service failure rate is high, and cannot heat, and glues glutinous pitch mixing It after material, can not remove, user is very laborious, causes construction labor intensity and construction quality all by extreme influence.After use " triangle creeper " can remove viscous glutinous sharp asphalt with burning, pollute environment although this rake is made of ferrous material, And weight is larger, and operation is laborious, and operator consumes one's strength larger, and levelling mixture is not smooth easy to operate, causes the construction that paves Mixture pavement elevation and flatness it is very poor, seriously affect asphaltic road-mix surface course presentation quality and using function
Through retrieving, Chinese Patent Application No. is the patent of CN201520366049.9, discloses a kind of road asphalt mixing material tube Surface construction screeder, including work department and push rod, work department are closed metal case, and the bottom surface of work department is working face, work It is acute angle that the leading flank for making portion, which tilts backwards setting and the angle of bottom surface, and push rod entirety extends towards back upper place and its lower end is connected to In work department, box body built-in electric heating element.
Screeder in above-mentioned patent has the disadvantage that screeder needs are manually controlled, while carrying out stone It needs to heat in the process, manual temperature controls deficiency, and after asphalt paving, temperature is higher, and operation easy damaged works on pitch Personnel, while levelling amount treatment effeciency is lower, levelling effect of some road surfaces after temperature reduction is poor.
Summary of the invention
The technical problem of artificial levelling low efficiency and levelling norm controlling deficiency based on existing screeder, the present invention mention A kind of asphalt pavement of highway leveling unit is gone out.
A kind of asphalt pavement of highway leveling unit proposed by the present invention, including road roller, it is fixed on road roller two sides Side mounting disc and rear side rear adjusting hanger, mounting disc described in two sides has been bolted side oscillation leveling mechanism, described Hanger is adjusted afterwards and has been bolted rear dragging leveling mechanism, and the side oscillation leveling mechanism and rear dragging leveling mechanism include liquid Piston rod one end of cylinder pressure, feed supplement mechanism, horizontal ruler frame, roller set and driving mechanism, the hydraulic cylinder is connected with attachment base, and The inner wall of attachment base has been bolted rotary electric machine, and the output shaft of the rotary electric machine is connected with horizontal ruler frame, and roller For wheel group through axis connection on the inner wall of horizontal ruler frame, the two sides inner wall of the horizontal ruler frame is provided with axis hole, and shaft hole inner wall It is connected with roller bearing by bearing, the end of the roller bearing is socketed with sprocket wheel, and driving chain is socketed between sprocket wheel, the drive By being connected at roller bearing and the axle center of roller set, the horizontal ruler frame is logical close to the side outer wall of hydraulic cylinder for the end of motivation structure It crosses bolt and is fixed with swinging frame, and the outer wall of swinging frame is rotatablely connected by bearing and feed supplement mechanism, the side oscillation levelling machine The non-piston rod one end of the hydraulic cylinder of structure is welded with mounting rack and bend pipe, and the bottom end of mounting rack is connected to the top outer wall of bend pipe On.
Further, the feed supplement mechanism includes striker plate, pressure plate, binder attachment strap and hopper, and striker plate is welded on The top side of hopper, the binder attachment strap is fixed on the top other side of hopper by damp hinge, and pressure plate is connected to On the bottom end two sides outer wall of binder attachment strap.
Further, the pressure plate includes intermediate plate, pressure sensor and temperature sensor, and pressure sensor setting exists On the two sides inner wall of intermediate plate, the detection probe of the temperature sensor is bolted on the inner wall of hopper.
Further, same tension spring is mounted between the hopper and the outer wall of swinging frame, and the bottom end of hopper passes through hinge Chain is fixed with turnover panel, and the two sides outer wall of turnover panel is connected with the end outer wall of tension spring.
Further, the hopper has been bolted ranging disk far from the side outer wall of swinging frame, and ranging disk The equidistant distribution gradient of outer wall has five to eight rangefinders, and the signal end of rangefinder is connected with PLC controller by signal wire.
Further, the two sides inner wall of the hopper is provided with card slot, and card slot inner wall has been threadably secured insulation board, institute Stating insulation board includes thermally conductive plate body, copper pipe and electric heating wire, and electric heating wire is interspersed on copper pipe inner wall, and copper pipe is in folded fin When structure be laid on the inner wall of thermally conductive plate body.
Further, the driving mechanism includes motor rack, decelerating motor and high-definition probe, and outside the top of decelerating motor Wall is bolted on the outer wall of motor rack, and the output shaft of decelerating motor is plugged on the inner wall of roller bearing by bearing, institute High-definition probe is stated to be fixed on the outer wall of motor rack side.
Further, the roller set includes two levelling rollers and clean-up frame, and clean-up frame is in y-type structure, and clean-up frame is logical It crosses bolt to be fixed in the bottom outer wall of horizontal ruler frame, the outer wall of one of them levelling roller is equipped with closely knit convex block, and another The outer wall of a levelling roller is provided with wedge shape and pushes away slot.
Further, the hydraulic cylinder, rotary electric machine, electric heating wire, decelerating motor, high-definition probe and decelerating motor connect It is connected to switch, and switch is connected by conducting wire with PLC controller.
Having the beneficial effect that in the present invention
1, this asphalt pavement of highway leveling unit drives leveling mechanism, the side oscillation levelling machine of two sides setting by road roller Structure can control push-and-pull and several swings, make to realize with the two sides road surface of road roller axis and synchronize levelling, rear dragging leveling mechanism Road surface after guaranteeing road roller traveling has uneven or recess to be supplemented, and guaranteeing that treated, road surface integrally can be at one On horizontal plane, the levelling effect that highway asphalt is laid with is improved, liberates manpower;
2, the leveling mechanism of this asphalt pavement of highway leveling unit is compacted and is pushed and pulled by being provided with one group of roller, Guarantee the uniform laying of the asphalt material in leveling procedures, roller group is independently rotated, and can also be linked, be guaranteed in leveling procedures In, the processing status of different location is able to satisfy, and improves whole working efficiency;
3, feed supplement mechanism in the leveling mechanism of this asphalt pavement of highway leveling unit, passes through high-definition probe record path and survey Distance meter distance measurement feedback landform guarantees that the temperature during filler will not be too low, filler mistake to asphalt filler is carried out at some hollows Whole levelling operation can be achieved in Cheng Zhong, the pressing effect by roller group, and the indices after keeping bituminous pavement levelling meet mark It is quasi-.
Detailed description of the invention
Fig. 1 is a kind of overlooking structure diagram of asphalt pavement of highway leveling unit proposed by the present invention;
Fig. 2 is a kind of leveling mechanism overlooking structure diagram of asphalt pavement of highway leveling unit proposed by the present invention;
Fig. 3 is a kind of leveling mechanism side structure schematic view of asphalt pavement of highway leveling unit proposed by the present invention;
Fig. 4 is a kind of feed supplement mechanism structural schematic diagram of asphalt pavement of highway leveling unit proposed by the present invention;
Fig. 5 is a kind of ranging disk operation schematic diagram of asphalt pavement of highway leveling unit proposed by the present invention.
In figure: adjusting hanger, 5 rear dragging leveling mechanisms, 6 peaces behind 1 road roller, 2 side mounting discs, 3 side oscillation leveling mechanisms, 4 It shelves, 7 hydraulic cylinders, 8 feed supplement mechanisms, 81 striker plates, 82 pressure plates, 83 binder attachment straps, 84 hoppers, 9 swinging frames, 10 roller bearings, 11 Driving chain, 12 decelerating motors, 13 motor racks, 14 levelling rollers, 15 rotary electric machines, 16 horizontal ruler framves, 17 high-definition probes, 18 are drawn Spring, 19 turnover panels, 20 ranging disks, 21 attachment bases, 22 rangefinders.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-5, a kind of asphalt pavement of highway leveling unit, including road roller 1, it is fixed on 1 two sides of road roller Side mounting disc 2 and rear side rear adjusting hanger 4, two sides mounting disc 2 has been bolted side oscillation leveling mechanism 3, rear to adjust Section hanger 4 has been bolted rear dragging leveling mechanism 5, and side oscillation leveling mechanism 3 and rear dragging leveling mechanism 5 include hydraulic cylinder 7, feed supplement mechanism 8, horizontal ruler frame 16, roller set and driving mechanism, feed supplement mechanism 8 take including striker plate 81, pressure plate 82, binder Plate 83 and hopper 84, and striker plate 81 is welded on the top side of hopper 84, binder attachment strap 83 is fixed on material by damp hinge The top other side of bucket 84, and pressure plate 82 is connected on the bottom end two sides outer wall of binder attachment strap 83, pressure plate 82 include intermediate plate, Pressure sensor and temperature sensor, and pressure sensor is arranged on the two sides inner wall of intermediate plate, the detection of temperature sensor is visited Head is bolted on the inner wall of hopper 84, and the model of pressure sensor and temperature sensor is respectively JYB-KB- CW2000 and WEST P6100 is mounted with same tension spring 18 between hopper 84 and the outer wall of swinging frame 9, and the bottom end of hopper 84 is logical It crosses hinge and is fixed with turnover panel 19, the two sides outer wall of turnover panel 19 is connected with the end outer wall of tension spring 18, and hopper 84 is far from swing The side outer wall of frame 9 has been bolted ranging disk 20, and the equidistant distribution gradient of outer wall of ranging disk 20 has five to eight A rangefinder 22, the signal end of rangefinder 22 are connected with PLC controller by signal wire, the model SW-Q80 of rangefinder 22, The model LV-S31 of PLC controller, the two sides inner wall of hopper 84 is provided with card slot, and card slot inner wall has been threadably secured heat preservation Plate, insulation board includes thermally conductive plate body, copper pipe and electric heating wire, and electric heating wire is interspersed on copper pipe inner wall, and copper pipe is in folding wing Structure is laid on the inner wall of thermally conductive plate body when piece, and piston rod one end of hydraulic cylinder 7 is connected with attachment base 21, and attachment base 21 Inner wall has been bolted rotary electric machine 15, and the output shaft of rotary electric machine 15 is connected with horizontal ruler frame 16, and roller set is logical Axis connection is crossed on the inner wall of horizontal ruler frame 16, the two sides inner wall of horizontal ruler frame 16 is provided with axis hole, and shaft hole inner wall passes through axis It holds and is connected with roller bearing 10, the end of roller bearing 10 is socketed with sprocket wheel, and is socketed with driving chain 11 between sprocket wheel, driving mechanism By being connected at roller bearing 10 and the axle center of roller set, horizontal ruler frame 16 passes through bolt close to the side outer wall of hydraulic cylinder 7 for end It is fixed with swinging frame 9, and the outer wall of swinging frame 9 is rotatablely connected by bearing and feed supplement mechanism 8, the liquid of side oscillation leveling mechanism 3 The non-piston rod one end of cylinder pressure 7 is welded with mounting rack 6 and bend pipe, and the bottom end of mounting rack 6 is connected on the top outer wall of bend pipe, drives Motivation structure includes motor rack 13, decelerating motor 12 and high-definition probe 17, and the top exterior walls of decelerating motor 12 are bolted On the outer wall of motor rack 13, the output shaft of decelerating motor 12 is plugged on the inner wall of roller bearing 10 by bearing, high-definition probe 17 It is fixed on 13 side outer wall of motor rack, roller set includes two levelling rollers 14 and clean-up frame, and clean-up frame is in y-type structure, clearly Reason frame is bolted in the bottom outer wall of horizontal ruler frame 16, and the outer wall of one of them levelling roller 14 is equipped with closely knit convex block, And the outer wall of another levelling roller 14 is provided with wedge shape and pushes away slot, hydraulic cylinder 7, rotary electric machine 15, electric heating wire, decelerating motor 12, height Clear probe 17 and decelerating motor 12 are respectively connected with switch, and switch is connected by conducting wire with PLC controller.
In the present invention, there are following several operating conditions for asphalt pavement of highway leveling unit:
1, asphalt road surface be unidirectional road surface when, the one of side oscillation leveling mechanism 3 in mountable left side or right side into Row operation guarantees the high efficiency of overall operation;
2, when asphalt road surface is two-way road surface, and middle part is the reserved bands such as roadbed isolation strip, the side of left and right side is installed It swings leveling mechanism 3 and carries out operation, road roller rides reserved band operation, guarantees the high efficiency of overall operation;
3, at asphalt road surface road surface accessible for multichannel, then side oscillation leveling mechanism 3 and rear dragging leveling mechanism are installed 5, guarantee whole operation integrality.
After different operating conditions, corresponding component is installed, driver opens the slow row at planned orbit of road roller 1 It sails, when side oscillation 3 operation of leveling mechanism, stops traveling, the two coordinating operation, side oscillation leveling mechanism 3 is in use, be to pass through liquid Cylinder pressure 7 drives operation before and after entire leveling mechanism, while driving mechanism itself is in the independent driving for carrying out levelling roller 14, sprocket wheel and Driving chain 11 makes whole levelling roller 14 that can realize linkage, guarantees that refining and press-fit carry out, in carrying out motion process, High-definition probe 17 records track road conditions, while the rangefinder 22 on ranging disk 20 is being run over according to distance measurement feedback landform Filler is carried out in journey, filler passes through tension spring 18 and the control of turnover panel 19 in feed supplement mechanism 8, while hopper 84 is to the asphalt material of filler It is kept the temperature, levelling convenient for filler at any time, the levelling width of whole pavement asphalt mixes different horizontal rulers according to practical calculating Frame 16 and roller group can be realized, convenient and efficient, it can be achieved that large area batch jobs.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (9)

1. a kind of asphalt pavement of highway leveling unit, including road roller (1), it is fixed on the side installation of road roller (1) two sides The rear adjusting hanger (4) of disk (2) and rear side, which is characterized in that mounting disc described in two sides (2) has been bolted side oscillation and has looked for Flattening mechanism (3) adjusts hanger (4) after described and has been bolted rear dragging leveling mechanism (5), the side oscillation leveling mechanism (3) and rear dragging leveling mechanism (5) includes hydraulic cylinder (7), feed supplement mechanism (8), horizontal ruler frame (16), roller set and driving machine Piston rod one end of structure, the hydraulic cylinder (7) is connected with attachment base (21), and the inner wall of attachment base (21) has been bolted The output shaft of rotary electric machine (15), the rotary electric machine (15) is connected with horizontal ruler frame (16), and roller set passes through axis connection On the inner wall of horizontal ruler frame (16), the two sides inner wall of the horizontal ruler frame (16) is provided with axis hole, and shaft hole inner wall passes through axis It holds and is connected with roller bearing (10), the end of the roller bearing (10) is socketed with sprocket wheel, and driving chain (11) are socketed between sprocket wheel, The end of the driving mechanism at roller bearing (10) and the axle center of roller set by being connected, and the horizontal ruler frame (16) is close to hydraulic The side outer wall of cylinder (7) has been bolted swinging frame (9), and the outer wall of swinging frame (9) passes through bearing and feed supplement mechanism (8) Rotation connection, non-piston rod one end of hydraulic cylinder (7) of the side oscillation leveling mechanism (3) are welded with mounting rack (6) and bend pipe, and The bottom end of mounting rack (6) is connected on the top outer wall of bend pipe.
2. a kind of asphalt pavement of highway leveling unit according to claim 1, which is characterized in that the feed supplement mechanism It (8) include striker plate (81), pressure plate (82), binder attachment strap (83) and hopper (84), and striker plate (81) is welded on hopper (84) top side, the binder attachment strap (83) are fixed on the top other side of hopper (84), and pressure by damp hinge Piece (82) is connected on the bottom end two sides outer wall of binder attachment strap (83).
3. a kind of asphalt pavement of highway leveling unit according to claim 2, which is characterized in that the pressure plate It (82) include intermediate plate, pressure sensor and temperature sensor, and pressure sensor is arranged on the two sides inner wall of intermediate plate, the temperature The detection probe of degree sensor is bolted on the inner wall of hopper (84).
4. a kind of asphalt pavement of highway leveling unit according to claim 2, which is characterized in that the hopper (84) It is mounted between the outer wall of swinging frame (9) same tension spring (18), and the bottom end of hopper (84) is fixed with turnover panel by hinge (19), the two sides outer wall of turnover panel (19) is connected with the end outer wall of tension spring (18).
5. a kind of asphalt pavement of highway leveling unit according to claim 4, which is characterized in that the hopper (84) Side outer wall far from swinging frame (9) has been bolted ranging disk (20), and the outer wall of ranging disk (20) is equidistant in ladder Degree is distributed with five to eight rangefinders (22), and the signal end of rangefinder (22) is connected with PLC controller by signal wire.
6. a kind of asphalt pavement of highway leveling unit according to claim 5, which is characterized in that the hopper (84) Two sides inner wall be provided with card slot, and card slot inner wall has been threadably secured insulation board, and the insulation board includes thermally conductive plate body, copper pipe And electric heating wire, and electric heating wire is interspersed on copper pipe inner wall, structure is laid on the interior of thermally conductive plate body when copper pipe is in folded fin On wall.
7. a kind of asphalt pavement of highway leveling unit according to claim 1, which is characterized in that the driving mechanism Including motor rack (13), decelerating motor (12) and high-definition probe (17), and the top exterior walls of decelerating motor (12) are solid by bolt It is scheduled on the outer wall of motor rack (13), the output shaft of decelerating motor (12) is plugged on the inner wall of roller bearing (10) by bearing, institute High-definition probe (17) is stated to be fixed on the outer wall of motor rack (13) side.
8. a kind of asphalt pavement of highway leveling unit according to claim 1, which is characterized in that the roller set packet Two levelling rollers (14) and clean-up frame are included, and clean-up frame is in y-type structure, clean-up frame is bolted on horizontal ruler frame (16) In bottom outer wall, the outer wall of one of them levelling roller (14) is equipped with closely knit convex block, and the outer wall of another levelling roller (14) It is provided with wedge shape and pushes away slot.
9. a kind of asphalt pavement of highway leveling unit according to claim 1, which is characterized in that the hydraulic cylinder (7), rotary electric machine (15), electric heating wire, decelerating motor (12), high-definition probe (17) and decelerating motor (12) are respectively connected with out It closes, and switch is connected by conducting wire with PLC controller.
CN201910602891.0A 2019-07-05 2019-07-05 Highway bituminous paving leveling device Active CN110273348B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910602891.0A CN110273348B (en) 2019-07-05 2019-07-05 Highway bituminous paving leveling device

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Application Number Priority Date Filing Date Title
CN201910602891.0A CN110273348B (en) 2019-07-05 2019-07-05 Highway bituminous paving leveling device

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CN110273348A true CN110273348A (en) 2019-09-24
CN110273348B CN110273348B (en) 2021-09-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113235369A (en) * 2021-06-17 2021-08-10 河南力大建设有限公司 Asphalt mixture's mixed laying device for road engineering

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006630A3 (en) * 1993-01-18 1994-11-03 Casters Francois Concrete levelling machine
KR20010003529A (en) * 1999-06-23 2001-01-15 왕정환 An apparatus for pressurizing the asphalt
CN204435179U (en) * 2015-01-06 2015-07-01 河北省交通建设监理咨询有限公司 A kind of automatic leveling head of laser and evener
CN104894949A (en) * 2015-06-11 2015-09-09 山东万世机械科技有限公司 Automatic levelling work head for laser levelling machine
CN206581119U (en) * 2017-03-06 2017-10-24 江苏省交通工程集团百润工程检测有限公司 A kind of Road surface level instrument
CN208618231U (en) * 2018-06-27 2019-03-19 武汉市市政路桥有限公司 A kind of road construction concrete leveling machine
CN208649841U (en) * 2018-07-08 2019-03-26 伍明建 A kind of self-level(l)ing device of paving machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006630A3 (en) * 1993-01-18 1994-11-03 Casters Francois Concrete levelling machine
KR20010003529A (en) * 1999-06-23 2001-01-15 왕정환 An apparatus for pressurizing the asphalt
CN204435179U (en) * 2015-01-06 2015-07-01 河北省交通建设监理咨询有限公司 A kind of automatic leveling head of laser and evener
CN104894949A (en) * 2015-06-11 2015-09-09 山东万世机械科技有限公司 Automatic levelling work head for laser levelling machine
CN206581119U (en) * 2017-03-06 2017-10-24 江苏省交通工程集团百润工程检测有限公司 A kind of Road surface level instrument
CN208618231U (en) * 2018-06-27 2019-03-19 武汉市市政路桥有限公司 A kind of road construction concrete leveling machine
CN208649841U (en) * 2018-07-08 2019-03-26 伍明建 A kind of self-level(l)ing device of paving machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113235369A (en) * 2021-06-17 2021-08-10 河南力大建设有限公司 Asphalt mixture's mixed laying device for road engineering

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Effective date of registration: 20240511

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Inventor after: Yu Wangyan

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