CN113293679A - Concrete curing means is used in road construction - Google Patents

Concrete curing means is used in road construction Download PDF

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Publication number
CN113293679A
CN113293679A CN202110464850.7A CN202110464850A CN113293679A CN 113293679 A CN113293679 A CN 113293679A CN 202110464850 A CN202110464850 A CN 202110464850A CN 113293679 A CN113293679 A CN 113293679A
Authority
CN
China
Prior art keywords
wind
fixedly connected
roll
road construction
concrete curing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110464850.7A
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Chinese (zh)
Inventor
李胜
刘建雄
江志义
谢志方
唐丝雨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Jiaojian Engineering Group Co ltd
Original Assignee
Hunan Jiaojian Engineering Group Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Jiaojian Engineering Group Co ltd filed Critical Hunan Jiaojian Engineering Group Co ltd
Priority to CN202110464850.7A priority Critical patent/CN113293679A/en
Publication of CN113293679A publication Critical patent/CN113293679A/en
Pending legal-status Critical Current

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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
    • E01C23/00Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/03Arrangements for curing paving; Devices for applying curing means; Devices for laying prefabricated underlay, e.g. sheets, membranes; Protecting paving under construction or while curing, e.g. use of tents
    • 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
    • E01C23/00Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces

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

Abstract

The utility model relates to a concrete curing means for road construction, which comprises a carriage body, be equipped with the mounting panel on the automobile body, it is connected with two wind-up rolls to rotate on the mounting panel, the winding is connected with maintenance membrane on the wind-up roll, wind-up roll length direction and axis of rotation all set up, two along automobile body width direction the one end that the wind-up roll is close to each other is crisscross setting in order to supply one of them maintenance membrane part on the wind-up roll covers another on the maintenance membrane on the wind-up roll, this application has the effect of being convenient for lay the maintenance membrane.

Description

Concrete curing means is used in road construction
Technical Field
The application relates to the field of concrete road maintenance, especially, relate to a concrete curing means for road construction.
Background
At present, after concrete road construction, concrete needs to be cured, and during curing, a curing film needs to be laid on a road surface to cover the concrete road surface, so that the phenomenon that the water in the concrete is evaporated too fast to influence the performance of the concrete road is prevented.
In the related art, when the maintenance film is laid, the maintenance film is generally laid manually.
To the correlation technique among the above-mentioned, because the road is longer, it is more time-consuming and laboursome to lay the maintenance membrane through the manual work.
Disclosure of Invention
In order to facilitate laying of the maintenance membrane, the application provides a concrete curing means for road construction.
The application provides a pair of concrete curing means for road construction adopts following technical scheme:
the utility model provides a concrete curing means for road construction, includes the automobile body, be equipped with the mounting panel on the automobile body, it is connected with two wind-up rolls to rotate on the mounting panel, the winding is connected with maintenance membrane on the wind-up roll, wind-up roll length direction and axis of rotation all set up along automobile body width direction, two the one end that the wind-up roll is close to each other is crisscross setting in order to supply one of them maintenance membrane part on the wind-up roll covers another maintenance membrane on the wind-up roll.
Through adopting above-mentioned technical scheme, when needing maintenance road, open the automobile body to the road on, then pull out the maintenance membrane on the wind-up roll, and fix the maintenance membrane on the road surface, then start the car, the wind-up roll is opened a book, thereby can cover the maintenance membrane on the road surface, and the one end that two wind-up rolls are close to each other is crisscross setting, thereby can control the maintenance membrane on one of them wind-up roll and cover on the maintenance membrane of another wind-up roll, then can guarantee that the maintenance membrane can cover completely on the road surface, reinforcing maintenance effect.
Optionally, be equipped with on the mounting panel and be used for the centre gripping subassembly of wind-up roll, the centre gripping subassembly includes fixed plate and fly leaf, fixed plate fixed connection be in on the mounting panel, two the centre gripping subassembly the fixed plate is close to each other, fly leaf sliding connection be in on the mounting panel, be equipped with on the fly leaf and be used for the location the locating component of fly leaf.
Through adopting above-mentioned technical scheme, conveniently change the wind-up roll, after the maintenance film finishes using on the wind-up roll, take off the restriction of locating component to the fly leaf, then slide the fly leaf, control fly leaf fixed plate and keep away from each other, can take off the wind-up roll.
Optionally, a guide rod is fixedly connected to the mounting plate, a slider is sleeved on the guide rod, the movable plate is fixedly connected to the slider, an air bag is fixedly attached to the inner wall of the slider, the air bag is communicated and fixedly connected with a communicating pipe, the positioning assembly includes a piston and a push rod, the piston is arranged in the communicating pipe, the push rod is used for pushing the piston to move so as to inflate the air bag, and a handle is fixedly connected to the push rod; the sliding block is fixedly connected with a fixing block, the side wall of the fixing block is provided with a abdicating groove, a clamping block is inserted in the abdicating groove, a first spring is fixedly connected in the abdicating groove along the inserting direction of the clamping block, the other end of the first spring is fixedly connected with the clamping block, and when the spring is not deformed, the clamping block is partially clamped in the abdicating groove; when the air bag abuts against the guide rod, the clamping block abuts against the handle to limit the movement of the handle.
Through adopting above-mentioned technical scheme, during the location slider, press the fixture block, control the fixture block and enter into the groove of stepping down completely, then press the handle, drive the piston and remove, cross the fixture block until the handle, then the fixture block resets and the butt handle under the effect of spring to can aerify the gasbag, the gasbag is aerifyd and is produced the inflation and support tightly on the guide bar, thereby increase the frictional force of slider and guide bar, in order to reach the purpose of location slider.
Optionally, one surface of the fixture block, which is far away from the communicating pipe, is an arc convex surface.
Through adopting above-mentioned technical scheme, the cambered surface setting of fixture block receives the effort of card at the handle to decompose into the power of pushing forward the fixture block in the groove of stepping down completely with the fixture block to need not the manual fixture block of pressing, reduce the operating procedure, make things convenient for operating personnel to operate.
Optionally, be equipped with the bin on the automobile body, the bin is used for saving the grit, bin lower extreme intercommunication and fixedly connected with conveyer pipe, the conveyer pipe other end is located two maintenance membrane crossing position departments directly over.
Through adopting above-mentioned technical scheme, the back is laid on the road to the maintenance membrane, and the grit in the storage box passes through the conveyer pipe and falls in the crossing position department of two maintenance membranes to can compress tightly two maintenance membranes on the road.
Optionally, a screw conveyor for conveying sand into the water conveying pipe is arranged in the storage box.
Through adopting above-mentioned technical scheme, be convenient for the transport of grit in the storage box.
Optionally, a water tank is arranged on the vehicle body, the lower end of the water tank is communicated with a water pump fixedly connected with, a water outlet of the water pump is communicated with a water pipe fixedly connected with, the other end of the water pipe is communicated with a spray head, and the spray head is located in front of the winding roller.
Through adopting above-mentioned technical scheme, because the shower nozzle is in wind-up roll the place ahead to when laying the maintenance membrane, open the water pump, pass through the shower nozzle with the water in the water tank and spray on the road, thereby can be convenient for following maintenance membrane cover on the road, through the suction of water, strengthened the stability of maintenance membrane.
Optionally, an exhaust fan is installed on the vehicle body, an air inlet of the exhaust fan is communicated with an air inlet pipe, the other end of the air inlet pipe is communicated with a dust absorption hopper, an air outlet of the exhaust fan is communicated with an air outlet pipe, the other end of the air outlet pipe is communicated with an exhaust hopper, the dust absorption hopper is located in front of the winding roller, and the exhaust hopper is located behind the winding roller.
Through adopting above-mentioned technical scheme, when laying the maintenance membrane, the air exhauster is held away the debris on the road surface through dust absorption fill to be convenient for maintenance membrane to lay on the road, meanwhile, the exhaust fill is discharged gas, and causes the impact to the maintenance membrane of laying on the road, thereby can press the maintenance membrane on the road.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when a road needs to be maintained, the vehicle body is driven to the road, the maintenance film on the winding rollers is pulled out and fixed on the road surface, then the vehicle is started, the winding rollers are unwound, so that the maintenance film can be covered on the road surface, and the ends, close to each other, of the two winding rollers are arranged in a staggered mode, so that the maintenance film on one winding roller can be controlled to be covered on the maintenance film of the other winding roller, the maintenance film can be completely covered on the road surface, and the maintenance effect is enhanced;
2. this application is when laying the maintenance membrane, and the air exhauster is through the debris uptake on the dust absorption fill with the road surface away to be convenient for maintenance membrane to lay on the road, meanwhile, the exhaust fill is gas outgoing, and cause the impact to the maintenance membrane of laying on the road, thereby can press the maintenance membrane on the road.
Drawings
FIG. 1 is a schematic view of the overall structure of a concrete curing device for road construction according to an embodiment of the present application;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the slider of FIG. 1;
fig. 4 is a top view of fig. 1.
Description of reference numerals: 1. a vehicle body; 2. mounting a plate; 3. a mounting frame; 4. a first cylinder; 5. a fixing plate; 6. a movable plate; 7. a wind-up roll; 8. curing the film; 9. a guide bar; 10. a slider; 11. an air bag; 12. a rubber pad; 13. a communicating pipe; 14. a piston; 15. a push rod; 16. a handle; 17. a second spring; 18. a fixed block; 19. a yielding groove; 20. a clamping block; 21. a first spring; 22. a storage tank; 23. a delivery pipe; 24. a screw conveyor; 25. a diversion trench; 26. a water tank; 27. a water pump; 28. a water pipe; 29. a flow guide pipe; 30. a spray head; 31. an exhaust fan; 32. an air inlet pipe; 33. a dust suction hopper; 34. an air outlet pipe; 35. an exhaust hopper; 36. and a second air cylinder.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses concrete curing means for road construction. Referring to fig. 1 and 2, the maintenance device comprises a vehicle body 1, wherein the tail end of the vehicle body 1 is rotatably connected with a mounting plate 2, the rotating axis of the mounting plate 2 is arranged along the width direction of the vehicle body 1, the mounting plate 2 is fixedly connected with a mounting frame 3, a first cylinder 4 is hinged on the vehicle body 1, and the other end of the first cylinder 4 is hinged with the mounting frame 3.
Be equipped with two centre gripping subassemblies on the mounting panel 2, the centre gripping subassembly includes fixed plate 5 and fly leaf 6, and fixed plate 5 fixed connection is on mounting panel 2, and the fixed plate 5 of two centre gripping subassemblies is close to each other and the dislocation, and it has wind-up roll 7 to peg graft between fly leaf 6 and the fixed plate 5, and the winding has maintenance membrane 8 on the wind-up roll 7.
When the winding roller 7 is not needed, the first cylinder 4 is opened to drive the mounting frame 3 to rotate so that the mounting frame 3 can be attached to the tail end of the vehicle body 1.
Referring to fig. 1 and 3, a guide rod 9 is fixedly connected to the mounting plate 2, the guide rod 9 is arranged along the length direction of the mounting plate 2 in the length direction, a slider 10 is fixedly connected to one end of the movable plate 6, which is far away from the wind-up roll 7, the slider 10 is slidably sleeved on the mounting plate 2, the movable plate 6 slides to separate the wind-up roll 7 from the movable plate 6, and a positioning assembly for positioning the slider 10 is arranged on the slider 10.
10 inner wall laminating fixedly connected with gasbag 11 of slider, gasbag 11 is the ring shape, 11 inner wall laminating fixedly connected with rubber pads 12 of gasbag, 11 intercommunication of gasbag and fixedly connected with communicating pipe 13, communicating pipe 13 other end is worn out slider 10 and is flushed with 10 outer walls of slider, the locating component includes piston 14 and push rod 15, piston 14 sets up in communicating pipe 13, 14 outer walls of piston and 13 inner wall butt of communicating pipe, 15 fixed connection of push rod is in the one side that gasbag 11 was kept away from to piston 14, 15 length direction of push rod sets up along 13 length direction of communicating pipe, 15 other ends of push rod extend and communicate 13 outside fixedly connected with handle 16, the pot head that slider 10 was worn out to push rod 15 is equipped with spring two 17, two 17 both ends of spring are fixed connection handle 16 and slider 10 respectively, when gasbag 11 aerifys in order to support tight guide bar 9, spring two 17 produce deformation.
A fixed block 18 is fixedly connected to the side of the handle 16 on the slider 10, an abdicating groove 19 is formed in the side wall of the fixed block 18, a fixture block 20 is inserted in the abdicating groove 19, a first spring 21 is fixedly connected to the inside of the abdicating groove 19 along the insertion direction of the fixture block 20, the other end of the first spring 21 is fixedly connected with the fixture block 20, when the spring is not deformed, the fixture block 20 is partially clamped in the abdicating groove 19, the part of one surface of the fixture block 20, which is far away from the slider 10, on the outer side of the abdicating groove 19 is an arc-shaped convex surface, and the fixture block 20 is positioned on the movement path of the handle 16; when the latch 20 abuts on one surface of the handle 16 far away from the push rod 15, the air bag 11 abuts against the guide rod 9.
Referring to fig. 2 and 4, a storage box 22 is fixedly connected to the vehicle body 1, the storage box 22 is used for storing gravel, a conveying pipe 23 is fixedly connected to the lower end of the storage box 22 and communicated with the lower end of the storage box 22, the conveying pipe 23 is a hose, and the other end of the conveying pipe 23 is located right above the intersection position of the two maintenance films 8 and fixedly connected to the mounting frame 3.
The bottom surface of the storage box 22 is provided with a diversion trench 25, the diversion trench 25 is communicated with the conveying pipe 23, a bolt conveyor is arranged in the diversion trench 25, and the sandstone in the storage box 22 is conveyed to the conveying pipe 23 through the bolt conveyor.
Fixedly connected with water tank 26 on automobile body 1, water tank 26 lower extreme intercommunication and fixedly connected with water pump 27, water pump 27 passes through screw fixed connection on automobile body 1, water pump 27 delivery port intercommunication and fixedly connected with water pipe 28, water pipe 28 other end intercommunication and fixedly connected with honeycomb duct 29, honeycomb duct 29 length direction sets up along automobile body 1 width direction, along a plurality of shower nozzles 30 of its length direction equidistance intercommunication and fixedly connected with on the honeycomb duct 29, shower nozzle 30 is located wind-up roll 7 the place ahead.
Go up through screw fixedly connected with air exhauster 31 on automobile body 1, air exhauster 31 air inlet intercommunication has intake pipe 32, intake pipe 32 is the hose, intake pipe 32 other end intercommunication has dust absorption fill 33, dust absorption fill 33 length direction sets up along 1 length direction of automobile body, 31 air outlet intercommunication of air exhauster and fixedly connected with outlet duct 34, outlet duct 34 is the hose, 34 other ends of outlet duct fixed connection just the intercommunication has exhaust fill 35 on mounting bracket 3, exhaust fill 35 length direction sets up along 1 width direction of automobile body, dust absorption fill 33 is located wind-up roll 7 the place ahead, exhaust fill 35 is located wind-up roll 7 rear.
A second air cylinder 36 is fixedly connected to the vehicle body 1 through a screw, the second air cylinder 36 is arranged in the vertical direction along the length direction, and a piston 14 of the second air cylinder 36 is fixedly connected with a dust suction hopper 33.
When the dust absorption hopper 33 is not needed, the second cylinder 36 is started to drive the dust absorption hopper 33 to move upwards.
The implementation principle of concrete curing means for road construction of this application embodiment is: during the use, open cylinder 4, drive mounting bracket 3 and rotate until exhaust hopper 35 rotates to suitable position, then install wind-up roll 7 between fly leaf 6 and fixed plate 5 to fix a position fly leaf 6, then open cylinder 36, drive dust absorption hopper 33 and remove, install dust absorption hopper 33 and remove to suitable position, then remove automobile body 1, open water pump 27 and bolt conveyer simultaneously to can lay maintenance membrane 8 on the road.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a concrete curing means for road construction, includes automobile body (1), its characterized in that: be equipped with mounting panel (2) on automobile body (1), it is connected with two wind-up rolls (7) to rotate on mounting panel (2), the winding is connected with maintenance membrane (8) on wind-up roll (7), wind-up roll (7) length direction and axis of rotation all set up, two along automobile body (1) width direction the one end that wind-up roll (7) are close to each other is crisscross setting in order to supply one of them maintenance membrane (8) part on wind-up roll (7) covers another on maintenance membrane (8) on wind-up roll (7).
2. The concrete curing device for road construction according to claim 1, characterized in that: be equipped with on mounting panel (2) dual-purpose in the centre gripping subassembly of wind-up roll (7), the centre gripping subassembly includes fixed plate (5) and fly leaf (6), fixed plate (5) fixed connection be in on mounting panel (2), two the centre gripping subassembly fixed plate (5) are close to each other, fly leaf (6) sliding connection be in on mounting panel (2), be equipped with on fly leaf (6) and be used for the location the locating component of fly leaf (6).
3. The concrete curing device for road construction according to claim 2, characterized in that: the positioning device is characterized in that a guide rod (9) is fixedly connected to the mounting plate (2), a sliding block (10) is sleeved on the guide rod (9), the movable plate (6) is fixedly connected to the sliding block (10), an air bag (11) is fixedly connected to the inner wall of the sliding block (10) in a fit mode, the air bag (11) is communicated and fixedly connected with a communicating pipe (13), the positioning assembly comprises a piston (14) and a push rod (15), the piston (14) is arranged in the communicating pipe (13), the push rod (15) is used for pushing the piston (14) to move so as to inflate the air bag (11), and a handle (16) is fixedly connected to the push rod (15); the sliding block (10) is fixedly connected with a fixing block (18), the side wall of the fixing block (18) is provided with a yielding groove (19), a clamping block (20) is inserted in the yielding groove (19), a first spring (21) is fixedly connected in the yielding groove (19) along the inserting direction of the clamping block (20), the other end of the first spring (21) is fixedly connected with the clamping block (20), and when the spring is not deformed, the clamping block (20) is partially clamped in the yielding groove (19); when the air bag (11) abuts against the guide rod (9), the clamping block (20) abuts against the handle (16) to limit the movement of the handle (16).
4. The concrete curing device for road construction according to claim 3, characterized in that: one surface of the clamping block (20) far away from the communicating pipe (13) is an arc convex surface.
5. The concrete curing device for road construction according to claim 1, characterized in that: be equipped with bin (22) on automobile body (1), bin (22) are used for storing the grit, bin (22) lower extreme intercommunication and fixedly connected with conveyer pipe (23), conveyer pipe (23) other end is located two maintenance membrane (8) crossing position department directly over.
6. The concrete curing device for road construction according to claim 5, characterized in that: a screw conveyor (24) used for conveying sand into the water conveying pipe (28) is arranged in the storage box (22).
7. The concrete curing device for road construction according to claim 1, characterized in that: be equipped with water tank (26) on automobile body (1), water tank (26) lower extreme intercommunication and fixedly connected with water pump (27), water pump (27) delivery port intercommunication and fixedly connected with water pipe (28), water pipe (28) other end intercommunication has shower nozzle (30), shower nozzle (30) are located wind-up roll (7) the place ahead.
8. The concrete curing device for road construction according to claim 1, characterized in that: install air exhauster (31) on automobile body (1), air exhauster (31) air inlet intercommunication has intake pipe (32), intake pipe (32) other end intercommunication has dust absorption fill (33), air exhauster (31) air outlet intercommunication has outlet duct (34), outlet duct (34) other end intercommunication has exhaust fill (35), dust absorption fill (33) are located wind-up roll (7) the place ahead, exhaust fill (35) are located wind-up roll (7) rear.
CN202110464850.7A 2021-04-28 2021-04-28 Concrete curing means is used in road construction Pending CN113293679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110464850.7A CN113293679A (en) 2021-04-28 2021-04-28 Concrete curing means is used in road construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110464850.7A CN113293679A (en) 2021-04-28 2021-04-28 Concrete curing means is used in road construction

Publications (1)

Publication Number Publication Date
CN113293679A true CN113293679A (en) 2021-08-24

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CN202110464850.7A Pending CN113293679A (en) 2021-04-28 2021-04-28 Concrete curing means is used in road construction

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0348364A1 (en) * 1988-06-22 1989-12-27 DERBIT- DERIVATI BITUMINOSI ED AFFINI- S.p.A. A self-propelled machine for laying membranes of waterproof or insulating sheet material supplied in rolls
CN204715180U (en) * 2015-06-05 2015-10-21 哈尔滨职业技术学院 Road construction special-purpose vehicle
CN107902139A (en) * 2017-12-27 2018-04-13 芜湖凌梦电子商务有限公司 A kind of jet-powered car film sticking apparatus
CN207826653U (en) * 2017-12-22 2018-09-07 广州市同悦电子科技有限公司 A kind of film covering device of PCB circuit board
CN209128858U (en) * 2018-11-10 2019-07-19 广东泽森建设有限公司 A kind of municipal works road maintenance device
CN211806873U (en) * 2020-02-13 2020-10-30 张璇 Concrete curing means for construction
CN211848798U (en) * 2019-12-21 2020-11-03 张建军 Cement highway maintenance membrane device that paves
CN112211076A (en) * 2020-11-11 2021-01-12 杨帮乐 Road surface curing means is used in road construction
CN112208096A (en) * 2020-09-22 2021-01-12 安徽省萧县黄河故道园艺场 Curved surface screen pad pasting device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0348364A1 (en) * 1988-06-22 1989-12-27 DERBIT- DERIVATI BITUMINOSI ED AFFINI- S.p.A. A self-propelled machine for laying membranes of waterproof or insulating sheet material supplied in rolls
CN204715180U (en) * 2015-06-05 2015-10-21 哈尔滨职业技术学院 Road construction special-purpose vehicle
CN207826653U (en) * 2017-12-22 2018-09-07 广州市同悦电子科技有限公司 A kind of film covering device of PCB circuit board
CN107902139A (en) * 2017-12-27 2018-04-13 芜湖凌梦电子商务有限公司 A kind of jet-powered car film sticking apparatus
CN209128858U (en) * 2018-11-10 2019-07-19 广东泽森建设有限公司 A kind of municipal works road maintenance device
CN211848798U (en) * 2019-12-21 2020-11-03 张建军 Cement highway maintenance membrane device that paves
CN211806873U (en) * 2020-02-13 2020-10-30 张璇 Concrete curing means for construction
CN112208096A (en) * 2020-09-22 2021-01-12 安徽省萧县黄河故道园艺场 Curved surface screen pad pasting device
CN112211076A (en) * 2020-11-11 2021-01-12 杨帮乐 Road surface curing means is used in road construction

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Application publication date: 20210824