CN113216006A - Intelligent vibration and noise reduction concrete paving device for bridge - Google Patents
Intelligent vibration and noise reduction concrete paving device for bridge Download PDFInfo
- Publication number
- CN113216006A CN113216006A CN202110609626.2A CN202110609626A CN113216006A CN 113216006 A CN113216006 A CN 113216006A CN 202110609626 A CN202110609626 A CN 202110609626A CN 113216006 A CN113216006 A CN 113216006A
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- Prior art keywords
- plate
- frame
- concrete paving
- noise reduction
- paving device
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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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
- E01C19/02—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 preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
- E01C19/104—Mixing by means of movable members in a non-rotating mixing enclosure, e.g. stirrers
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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
- E01C19/4833—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 tamping or vibrating means for consolidating or finishing, e.g. immersed vibrators, with or without non-vibratory or non-percussive pressing or smoothing means
- E01C19/4853—Apparatus designed for railless operation, e.g. crawler-mounted, provided with portable trackway arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Road Paving Machines (AREA)
Abstract
The invention belongs to the technical field of concrete paving equipment, and particularly relates to an intelligent vibration and noise reduction bridge concrete paving device. The vibrating tamping machine realizes uniform material distribution by driving the concrete spray pipe to rotate in a reciprocating manner, and simultaneously vibrates the concrete efficiently by driving the vibrating tamping rod to rotate and vibrating up and down, so that the concrete paving efficiency is improved.
Description
Technical Field
The invention relates to the technical field of concrete paving equipment, in particular to an intelligent vibration and noise reduction concrete paving device for a bridge.
Background
The concrete paver is a construction machine which paves the mixed cement concrete along the given thickness, width and road type requirements of a roadbed, and then carries out the operation procedures of compaction, leveling, finishing and the like to finish paving the concrete pavement. The concrete spreader generally comprises a distributor, a pre-leveling mechanism, a vibrator (including a vibrating rod and a vibrating beam), a leveler, a troweling machine and the like, and during construction, the spreader travels on a fixed rail mold and can be paved into a traveling belt, wherein the rail mold is a traveling track of the spreader and a side mold for paving a road surface. The concrete construction process is as follows: the cement concrete which is dumped on the roadbed is uniformly spread on the roadbed according to a certain thickness by a distributing device, then the cement concrete is spread by a pre-leveling structure and compacted by a vibrating device, and finally the cement concrete is smoothed by a smoothing machine. And during the concrete hardening period, the rail mold is kept not to be disassembled, and after the concrete is hardened, the rail mold is disassembled again, and the next section of pavement is continuously paved.
The concrete paving device for the bridge has the advantages that the existing concrete paving device for the bridge has poor material distribution uniformity and poor vibration effect on concrete, the paving work efficiency is influenced, the damping effect is poor, the noise pollution caused by the operation of equipment is large, and therefore the concrete paving device for the bridge with the intelligent vibration and noise reduction function is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the defects that the existing concrete paving device for a bridge has poor distribution uniformity and poor vibrating effect on concrete, the paving work efficiency is influenced, and the vibration absorption effect is poor, so that the noise pollution generated by equipment operation is large, and the concrete paving device for the bridge has the advantages of intelligent vibration absorption and noise reduction.
In order to achieve the purpose, the invention adopts the following technical scheme:
an intelligent vibration-damping noise-reducing concrete paving device for a bridge comprises a frame, wherein a through hole is formed in the top of the frame, a hopper is fixedly arranged in the through hole, a round hole is formed in the bottom of one side of the hopper, the round hole is rotatably and hermetically arranged on a transverse pipe, the bottom of the transverse pipe is communicated with a spray pipe, fixed frames are fixedly arranged on two sides of the bottom of the frame, a support plate is slidably arranged in the fixed frames, a motor is fixedly arranged on one side of one of the two fixed frames, a driving bevel gear, a driving belt wheel and a rotary table are fixedly connected onto an output shaft of the motor, a sliding plate is slidably arranged in the sliding groove, a rack and a movable frame are fixedly arranged at the bottom of the sliding plate, a transmission gear is fixedly arranged at one end of the transverse pipe, the transmission gear is meshed with the rack, a round rod is fixedly arranged on one side of the rotary table and movably abutted against the bottom of the movable frame, the top fixed mounting of frame has the riser, the bottom fixed mounting of riser has the swash plate, the inclined hole has been seted up to one side of swash plate, the (mixing) shaft is installed to the inclined hole internal rotation, the outside fixed mounting of (mixing) shaft has a plurality of poles of vibrating, and fixed mounting has driven bevel gear on the (mixing) shaft, drive bevel gear meshes with driven bevel gear mutually, two fixed frames are close to one side each other and are rotated and install two pivots, driven pulley and two cams have all been cup jointed in the outside of two pivots, the equal fixed mounting in one side that two backup pads are close to each other has the push pedal, four cams respectively with the top roll connection of the push pedal that corresponds, drive pulley and two driven pulley go up the transmission and install same belt.
Preferably, the supports are fixedly mounted on the front side and the rear side of the bottom of the supporting plate, and the same pressing wheel is rotatably mounted on one side, close to each other, of the two supports on the same side, so that the concrete is compacted.
Preferably, a plurality of buffer springs are fixedly connected to the top of the supporting plate, and the top ends of the plurality of buffer springs are respectively and fixedly connected to the inner wall of the top of the corresponding fixing frame to buffer and reset the rack.
Preferably, one end of the stirring shaft is fixedly provided with a limiting plate, and the limiting plate is movably abutted against one side of the inclined plate to limit the stirring shaft.
Preferably, the bottom of frame fixed mounting has the locating plate, and the locating plate rotates to cup joint in the outside of connecting axle, rotates the location to the connecting axle.
Preferably, the outer side of the connecting shaft is fixedly sleeved with a limiting ring, and the limiting ring is movably abutted against one side of the positioning plate to limit the transverse movement of the connecting shaft.
Preferably, one side of the vertical plate is provided with a positioning hole, and the cross shaft is rotatably provided with the positioning hole to be rotatably positioned in the positioning hole.
Preferably, two limiting rods are fixedly connected to the inner walls of the front side and the rear side of the sliding groove, and the sliding plate is slidably sleeved on the outer sides of the two limiting rods to guide and limit the sliding plate.
According to the intelligent vibration-damping noise-reducing bridge concrete paving device, concrete is placed into a hopper, a motor is started, an output shaft of the motor drives a cross shaft to rotate, the cross shaft drives a round rod to rotate through a turntable, the round rod drives a sliding plate to reciprocate back and forth through matching with a moving frame, the sliding plate drives a rack to reciprocate back and forth, the rack drives a connecting shaft to reciprocate through meshing with a transmission gear, the connecting shaft drives a transverse pipe and a spray pipe to reciprocate back and forth, so that the concrete in the hopper is distributed to different positions through the spray pipe, and the distribution uniformity of the concrete is improved;
in the intelligent vibration-damping noise-reduction bridge concrete paving device, the transverse shaft rotates and drives the stirring shaft to rotate through the meshing of the driving bevel gear and the driven bevel gear, the stirring shaft drives the vibrating rod to rotate so as to stir and mix concrete, the transverse shaft rotates and drives the two rotating shafts to rotate through the transmission between the driving belt wheel and the driven belt wheel, the two rotating shafts respectively drive the two cams to rotate, the cams drive the rack to vibrate up and down under the action of the buffer springs through abutting against the push plate, the noise generated by the vibration of the equipment is reduced through the buffering of the buffer springs, the rack drives the vibrating rod to vibrate up and down while rotating, the vibrating extrusion of the concrete is realized, and the pressing wheel is intermittently increased in downward force while the rack vibrates up and down, so that the rack can be better flattened when moving to the concrete above, the compaction effect is enhanced;
the concrete distributor is reasonable in structural design, uniform distribution is achieved by driving the concrete spray pipe to rotate in a reciprocating mode, efficient vibration is carried out on concrete by driving the vibrating rod to rotate and vibrating up and down at the same time, concrete paving efficiency is improved, and reliability is high.
Drawings
FIG. 1 is a schematic perspective view of an intelligent vibration and noise reduction bridge concrete paving device according to the present invention;
FIG. 2 is a schematic structural diagram of part A of an intelligent vibration and noise reduction bridge concrete paving device provided by the invention;
FIG. 3 is a schematic cross-sectional view of an intelligent vibration and noise reduction bridge concrete paving apparatus according to the present invention;
fig. 4 is a schematic structural diagram of a part B of the intelligent vibration and noise reduction bridge concrete paving device provided by the invention;
fig. 5 is a schematic structural diagram of a part C of the intelligent vibration-damping noise-reducing bridge concrete paving device provided by the invention.
In the figure: 1. a frame; 2. a hopper; 3. a pinch roller; 4. a stirring shaft; 5. vibrating a tamping rod; 6. a support plate; 7. a fixing frame; 8. a transverse tube; 9. a nozzle; 10. a transmission gear; 11. a slide plate; 12. a rack; 13. a motor; 14. a horizontal axis; 15. a driving pulley; 16. a driven pulley; 17. a rotating shaft; 18. a cam; 19. pushing the plate; 20. a buffer spring; 21. a driven bevel gear; 22. a drive bevel gear; 23. a turntable; 24. a round bar; 25. moving the frame; 26. a chute; 27. positioning a plate; 28. a connecting shaft; 29. a riser.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, an intelligent vibration-damping noise-reducing concrete paving device for a bridge comprises a frame 1, wherein a through hole is formed in the top of the frame 1, a hopper 2 is fixedly installed in the through hole, a round hole is formed in the bottom of one side of the hopper 2, the round hole is rotatably and hermetically installed on a transverse pipe 8, the bottom of the transverse pipe 8 is communicated with a spray pipe 9, fixed frames 7 are fixedly installed on two sides of the bottom of the frame 1, a support plate 6 is slidably installed in the fixed frames 7, a motor 13 is fixedly installed on one side of one fixed frame 7 of the two fixed frames 7, a driving bevel gear 22, a driving pulley 15 and a rotary table 23 are fixedly connected to an output shaft of the motor 13, a sliding groove 26 is formed in the bottom of the frame 1, a sliding plate 11 is slidably installed in the sliding groove 26, a rack 12 and a movable frame 25 are fixed at the bottom of the sliding plate 11, a transmission gear 10 is fixedly installed at one end of the transverse pipe 8, and the transmission gear 10 is meshed with the rack 12, a round rod 24 is fixedly arranged on one side of the rotary table 23, the round rod 24 is movably abutted against the bottom of the movable frame 25, a vertical plate 29 is fixedly arranged on the top of the frame 1, an inclined plate is fixedly arranged on the bottom of the vertical plate 29, an inclined hole is formed in one side of the inclined plate, a stirring shaft 4 is rotatably arranged in the inclined hole, a plurality of vibrating rods 5 are fixedly arranged on the outer side of the stirring shaft 4, and a driven bevel gear 21 is fixedly installed on the stirring shaft 4, a driving bevel gear 22 is meshed with the driven bevel gear 21, two rotating shafts 17 are rotatably installed on one sides of the two fixing frames 7 close to each other, driven belt wheels 16 and two cams 18 are fixedly sleeved on the outer sides of the two rotating shafts 17, push plates 19 are fixedly installed on one sides of the two supporting plates 6 close to each other, the four cams 18 are respectively in rolling connection with the tops of the corresponding push plates 19, and the same belt is installed on the driving belt wheel 15 and the two driven belt wheels 16 in a transmission manner.
In this embodiment, equal fixed mounting in both sides has the support around the bottom of backup pad 6, and the one side that two supports that lie in same one side are close to each other rotates and installs same pinch roller 3, realizes the compaction to the concrete.
In this embodiment, a plurality of buffer springs 20 are fixedly connected to the top of the supporting plate 6, and the top ends of the plurality of buffer springs 20 are respectively and fixedly connected to the top inner wall of the corresponding fixing frame 7 to buffer and reset the rack 1.
In this embodiment, the one end fixed mounting of (mixing) shaft 4 has the limiting plate, and limiting plate and the one side activity butt of swash plate carry on spacingly to (mixing) shaft 4.
In this embodiment, the bottom of the frame 1 is fixedly provided with a positioning plate 27, and the positioning plate 27 is rotatably sleeved on the outer side of the connecting shaft 28 to rotatably position the connecting shaft 28.
In this embodiment, the outer side of the connecting shaft 28 is fixedly sleeved with a limiting ring, and the limiting ring is movably abutted against one side of the positioning plate 27 to limit the connecting shaft 28 in lateral movement.
In this embodiment, a positioning hole is formed in one side of the vertical plate 29, and the horizontal shaft 14 is rotatably installed in the positioning hole to rotatably position the horizontal shaft 14.
In this embodiment, two limiting rods are fixedly connected to the inner walls of the front and rear sides of the sliding groove 26, and the sliding plate 11 is slidably sleeved on the outer sides of the two limiting rods to guide and limit the sliding plate 11.
In the embodiment, when the concrete mixer is used, concrete is put into the hopper 2, the motor 13 is started, the output shaft of the motor 13 drives the transverse shaft 14 to rotate, the transverse shaft 14 drives the round rod 24 to rotate through the rotary disc 23, the round rod 24 drives the sliding plate 11 to reciprocate back and forth through the matching with the moving frame 25, the sliding plate 11 drives the rack 12 to reciprocate back and forth, the rack 12 drives the connecting shaft 28 to reciprocate through the meshing with the transmission gear 10, the connecting shaft 28 drives the transverse pipe 8 and the spray pipe 9 to reciprocate back and forth, so that concrete in the hopper 2 is distributed to different positions through the spray pipe 9, the distribution uniformity of the concrete is improved, the stirring shaft 4 is driven to rotate through the meshing of the driving bevel gear 22 and the driven bevel gear 21 while the transverse shaft 14 rotates, the stirring shaft 4 drives the vibrating rod 5 to rotate, and the concrete is stirred and mixed, and the cross axle 14 rotates simultaneously with the transmission between driving pulley 15 and the driven pulley 16 drive two pivot 17 and rotate, two pivot 17 drive two cams 18 respectively and rotate, cam 18 drives frame 1 through the butt with push pedal 19 and under buffer spring 20's effect and shakes from top to bottom, and the noise that the vibrations of equipment produced is reduced in the buffering through buffer spring 20, frame 1 drives to shake and shakes pole 5 pivoted simultaneously and shakes from top to bottom, realize the extrusion of vibrating the concrete, and intermittent type nature when frame 1 reciprocates and shakes from top to bottom increases the pressure to pinch roller 3, so that carry out better flattening when frame 1 removes to the concrete top, reinforcing compaction effect.
Claims (8)
1. The utility model provides a concrete paving device for bridge of intelligence damping and making an uproar falls, includes frame (1), its characterized in that, the through-hole has been seted up at the top of frame (1), and fixed mounting has hopper (2) in the through-hole, and the round hole has been seted up to one side bottom of hopper (2), and the round hole internal rotation is sealed to be installed and is violently managed (8), and the bottom intercommunication of violently managing (8) has spray tube (9), the equal fixed mounting in bottom both sides of frame (1) has fixed frame (7), and slidable mounting has backup pad (6) in fixed frame (7), and one side fixed mounting of one fixed frame (7) in two fixed frames (7) has motor (13), fixedly connected with drive bevel gear (22), drive pulley (15) and carousel (23) on the output shaft of motor (13), spout (26) have been seted up to the bottom of frame (1), and slidable mounting has slide (11) in spout (26), the bottom of the sliding plate (11) is fixed to a rack (12) and a moving frame (25), one end of the transverse pipe (8) is fixedly provided with a transmission gear (10), the transmission gear (10) is meshed with the rack (12), one side of the rotary plate (23) is fixedly provided with a round rod (24), the round rod (24) is movably abutted to the bottom of the moving frame (25), the top of the rack (1) is fixedly provided with a vertical plate (29), the bottom of the vertical plate (29) is fixedly provided with an inclined plate, one side of the inclined plate is provided with an inclined hole, a stirring shaft (4) is rotatably arranged in the inclined hole, the outer side of the stirring shaft (4) is fixedly provided with a plurality of vibrating rods (5), a driven bevel gear (21) is fixedly arranged on the stirring shaft (4), the driving bevel gear (22) is meshed with the driven bevel gear (21), and two rotating shafts (17) are rotatably arranged on one side, which the two fixing frames (7) are close to each other, the outside of two pivot (17) is all fixed the cover and is connected with driven pulley (16) and two cam (18), and the equal fixed mounting in one side that two backup pad (6) are close to each other has push pedal (19), four cam (18) respectively with the top roll connection of the push pedal (19) that corresponds, transmission mounting has same belt on driving pulley (15) and two driven pulley (16).
2. The intelligent vibration and noise reduction bridge concrete paving device according to claim 1, wherein brackets are fixedly mounted on the front side and the rear side of the bottom of the supporting plate (6), and the same pressing wheel (3) is rotatably mounted on the side, close to each other, of the two brackets on the same side.
3. The intelligent vibration and noise reduction bridge concrete paving device according to claim 1, wherein a plurality of buffer springs (20) are fixedly connected to the top of the supporting plate (6), and the top ends of the plurality of buffer springs (20) are respectively and fixedly connected to the top inner wall of the corresponding fixing frame (7).
4. The intelligent vibration and noise reduction bridge concrete paving device according to claim 1, wherein a limiting plate is fixedly mounted at one end of the stirring shaft (4), and the limiting plate is movably abutted against one side of the inclined plate.
5. The intelligent vibration and noise reduction bridge concrete paving device according to claim 1, wherein a positioning plate (27) is fixedly mounted at the bottom of the rack (1), and the positioning plate (27) is rotatably sleeved on the outer side of the connecting shaft (28).
6. The intelligent vibration and noise reduction bridge concrete paving device according to claim 1, wherein a limiting ring is fixedly sleeved on the outer side of the connecting shaft (28), and the limiting ring is movably abutted to one side of the positioning plate (27).
7. The intelligent vibration and noise reduction bridge concrete paving device according to claim 1, wherein one side of the vertical plate (29) is provided with a positioning hole, and the transverse shaft (14) is rotatably installed in the positioning hole.
8. The intelligent vibration and noise reduction bridge concrete paving device according to claim 1, wherein two limiting rods are fixedly connected to the inner walls of the front side and the rear side of the sliding groove (26), and the sliding plate (11) is slidably sleeved on the outer sides of the two limiting rods.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202110609626.2A CN113216006A (en) | 2021-06-01 | 2021-06-01 | Intelligent vibration and noise reduction concrete paving device for bridge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202110609626.2A CN113216006A (en) | 2021-06-01 | 2021-06-01 | Intelligent vibration and noise reduction concrete paving device for bridge |
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CN113216006A true CN113216006A (en) | 2021-08-06 |
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CN202110609626.2A Withdrawn CN113216006A (en) | 2021-06-01 | 2021-06-01 | Intelligent vibration and noise reduction concrete paving device for bridge |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114277647A (en) * | 2022-01-14 | 2022-04-05 | 龙建路桥股份有限公司 | Paving equipment for construction of cement stabilized base layer based on road construction |
CN114582218A (en) * | 2022-03-04 | 2022-06-03 | 燕山大学 | Pouring teaching aid |
CN114775373A (en) * | 2022-04-29 | 2022-07-22 | 北京永合立信科技有限公司 | Super early strong cement concrete leveling device that paves |
CN116289429A (en) * | 2023-05-17 | 2023-06-23 | 河南勇威特种设备有限公司 | Concrete road surface paving device for engineering construction |
CN116892157A (en) * | 2023-09-11 | 2023-10-17 | 中铁十二局集团有限公司 | Roadbed slope trimming device with leveling function based on road construction |
-
2021
- 2021-06-01 CN CN202110609626.2A patent/CN113216006A/en not_active Withdrawn
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114277647A (en) * | 2022-01-14 | 2022-04-05 | 龙建路桥股份有限公司 | Paving equipment for construction of cement stabilized base layer based on road construction |
CN114582218A (en) * | 2022-03-04 | 2022-06-03 | 燕山大学 | Pouring teaching aid |
CN114775373A (en) * | 2022-04-29 | 2022-07-22 | 北京永合立信科技有限公司 | Super early strong cement concrete leveling device that paves |
CN116289429A (en) * | 2023-05-17 | 2023-06-23 | 河南勇威特种设备有限公司 | Concrete road surface paving device for engineering construction |
CN116289429B (en) * | 2023-05-17 | 2023-08-11 | 河南勇威特种设备有限公司 | Concrete road surface paving device for engineering construction |
CN116892157A (en) * | 2023-09-11 | 2023-10-17 | 中铁十二局集团有限公司 | Roadbed slope trimming device with leveling function based on road construction |
CN116892157B (en) * | 2023-09-11 | 2023-12-12 | 中铁十二局集团有限公司 | Roadbed slope trimming device with leveling function based on road construction |
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Application publication date: 20210806 |