CN108625263B - Road pavement preassembling device and using method thereof - Google Patents
Road pavement preassembling device and using method thereof Download PDFInfo
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- CN108625263B CN108625263B CN201810455394.8A CN201810455394A CN108625263B CN 108625263 B CN108625263 B CN 108625263B CN 201810455394 A CN201810455394 A CN 201810455394A CN 108625263 B CN108625263 B CN 108625263B
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- controller
- hoist
- prefabricated
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- road
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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
- E01C19/52—Apparatus for laying individual preformed surfacing elements, e.g. kerbstones
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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
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
Abstract
The invention discloses a road pavement preassembly device and a using method thereof, wherein the device comprises: a main body; hoisting the assembly; the alignment assembly comprises a clamping head and a connecting rod mechanism; the detection assembly comprises a seam width detection device and a camera; the console comprises a power device and a central controller. In the use method, the central controller controls the hoisting assembly to hoist the prefabricated part to a specified range through the first controller, then controls the seam width detection device and the camera to be started, controls the clamping head to move through the second controller, enables the horizontal direction and the vertical direction of the prefabricated part to be aligned with other prefabricated parts, and enables the width of the splicing seam detected in real time to be within a first preset range. The road pavement preassembling device can finish hoisting and assembling work, has high degree of mechanization and simple use method, and simultaneously improves the construction quality by monitoring the seam width in real time, so that the construction pavement has longer service life.
Description
Technical Field
The invention relates to the field of construction devices. More particularly, the present invention relates to a road pavement preassembly apparatus and method of use thereof.
Background
Traditional cast-in-place concrete requires site molding, site pouring and site curing. The concrete prefabricated member is widely applied to the fields of buildings, traffic, water conservancy and the like, and plays an important role in national economy. Compared with cast-in-place concrete, the prefabricated concrete member produced in factory has many advantages: safety: for construction workers, the relatively stable working environment in a factory is higher than the safety factor of complex site operation; quality: the quality and the process of the building components are better controlled through mechanized production; speed: the standardization of the size and the characteristics of the prefabricated member can obviously accelerate the installation speed and the construction project progress; cost: compared with the traditional on-site molding, the mold in a factory can be repeatedly recycled, and the comprehensive cost is lower; less manual demands are required for mechanized production, and with the continuous rise of labor cost, the cost advantage of the prefabricated member produced in large scale is more and more obvious. Environment: the field operation amount of the building site adopting the prefabricated member is obviously reduced, and the dust pollution and the noise pollution are obviously reduced. The advantages of pavement prefabrication and assembly are that the prefabricated and assembled concrete can meet the requirement of the strength of the concrete pavement, has the characteristics of low cost of repair materials and quick traffic, is an ideal technology for quickly repairing the cement concrete pavement, but the existing device for road pavement preassembly is short, is generally finished manually, has high labor cost and has good and uneven construction quality. Therefore, a road pavement preassembly device and a using method thereof are needed to be found, so that the mechanization degree is improved, the construction quality is ensured to be good, and the service life of the road pavement is longer.
Disclosure of Invention
An object of the present invention is to solve the above-described problems and provide advantages which will be described later.
The invention also aims to provide a road surface preassembling device, which has high mechanization degree by arranging the hoisting assembly, the alignment assembly and the seam width detection device on the main body, can complete hoisting and assembling work simultaneously, and can improve the quality of road surface construction by monitoring the seam width in real time.
It is still another object of the present invention to provide a method of using a road pavement preassembly apparatus, which is simple to use, mechanically performs assembly by real-time monitoring of seam width and alignment position, reduces errors, improves construction quality, and provides a construction pavement with a longer service life.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a road surface preassembly apparatus including:
a movable body;
the hoisting assembly is arranged on the main body and can hoist the prefabricated part and adjust the hoisting direction, and the moving direction and the displacement of the hoisting assembly can be controlled by the first controller;
the alignment assembly is arranged on the main body and used for hoisting the prefabricated member to a specified range of a pre-paved road surface and then clamping the prefabricated member and adjusting the splicing position to a specified position, and comprises a clamping head capable of clamping the prefabricated member and a connecting rod mechanism connected with the clamping head, wherein the second controller can control the connecting rod mechanism to adjust the moving direction and displacement of the clamping head;
the detection assembly is arranged on the main body and comprises a seam width detection device and a rotatable camera, wherein the seam width detection device is used for detecting the widths of splicing seams of the prefabricated parts and the adjacent prefabricated parts in real time, the rotatable camera is used for monitoring the positions of the prefabricated parts, and the seam width detection device comprises a capacitance displacement sensor;
locate control cabinet in the main part, its inside drive including hoist and mount subassembly and alignment subassembly's power device with be connected to power device central controller, central controller is connected to respectively first controller the second controller and detection component, central controller is used for first through first controller control hoist and mount subassembly hoist and mount prefab to appointed scope, then control wide detection device of seam and camera are launched, control through the second controller the holding head removes, makes prefab horizontal direction and vertical direction all align with other prefabs, and the concatenation seam width of real-time detection is in first preset scope.
Preferably, the clamping head comprises an angle fixing piece sleeved on a corner of the prefabricated part, which is not in contact with other prefabricated parts, for fixing the clamping piece, and a piezoelectric ceramic brake controlled by the second controller is arranged in the fixing piece.
Preferably, the fixing member has a double-layer structure including a fixing rim of an inner layer accommodating a corner of the preform and a pair of extending rims extending from the vertical corner to be perpendicular to each other outside the fixing rim, respectively, and the piezoelectric ceramic stopper is provided in the fixing rim.
Preferably, the fixing piece is made of transparent materials, and a telescopic graduated scale is arranged in the extending edge.
Preferably, the detection assembly further comprises:
road flatness detection device and be connected to road flatness detection device's roughness detection control ware, the roughness detection control ware is connected to central controller, central controller before control hoist and mount subassembly hoist and mount prefab, earlier by roughness detection control ware control road flatness detects the road flatness of laying the road surface in advance, if the road flatness of laying the road surface in advance is in the second and predetermines the scope, again by control through first controller hoist and mount subassembly hoist and mount prefab.
Preferably, the main body comprises an openable central control room, the hoisting assembly, the aligning assembly and the console are arranged on one side of the central control room, and the console is arranged in the central control room.
Preferably, the method further comprises the following steps:
and the cleaning assembly is arranged on one side of the central control room, can be controlled and started by a third controller connected to the central controller, and is used for opening the cleaning assembly to clean the pre-paved road surface before the central controller controls the hoisting assembly to hoist the prefabricated member.
The invention also provides a use method of the road pavement preassembly device, which comprises the following steps:
step one, a central controller in a console on a main body is used for controlling a hoisting assembly to hoist a prefabricated part to a specified range through a first controller;
secondly, starting the seam width detection device for detecting the widths of splicing seams of the prefabricated parts and the adjacent prefabricated parts in real time and a camera for monitoring the positions of the prefabricated parts;
and step three, the central controller controls the clamping head in the alignment assembly to move through the second controller, the clamping head moves until the horizontal direction and the vertical direction of the prefabricated part are aligned with other prefabricated parts, and the width of the splicing seam detected in real time is within a first preset range.
Preferably, in the first step, the central controller controls the cleaning assembly to clean the pre-paved road through the second controller, the flatness detection controller controls the road flatness to detect the road flatness of the pre-paved road, and the hoisting assembly is controlled by the first controller to hoist the prefabricated member to the specified range if the road flatness of the pre-paved road is in the second preset range.
The invention at least comprises the following beneficial effects:
according to the road pavement preassembling device, the hoisting assembly, the aligning assembly and the seam width detection device are arranged on the main body, so that the road pavement preassembling device is high in mechanization degree, can complete hoisting and assembling work at the same time, and can improve the quality of road construction by monitoring the seam width in real time. During the use, operating personnel earlier through hoist and mount subassembly operation hoist and mount prefab to the appointed scope of waiting to assemble, can carry out the convenient follow-up fine setting of adjustment of certain hoist and mount direction, then control seam width detection device and camera and launch, detection components further can set up near the subassembly that aligns, conveniently detects and detects the position of prefab, still can adjust the camera direction and aim at prefab and adjacent prefab. Then, the clamping head is controlled to move through the second controller for fine adjustment, so that the horizontal direction and the vertical direction of the prefabricated part are aligned to other prefabricated parts, and the width of the splicing seam detected in real time is within a first preset range. The use method of the road pavement preassembly device is simple, the gap width and the alignment position are monitored in real time, the road pavement preassembly device is mechanically assembled, the error is reduced, the construction quality is improved, and the construction pavement has longer service life.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural view of a road pavement preassembly apparatus of the present invention;
FIG. 2 is a schematic flow diagram of a method of using the road pavement preassembly apparatus of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the invention with reference to the description.
It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Example 1
A road pavement preassembly apparatus, as shown in fig. 1, comprising: a movable body 1; the main body 1 includes an openable and closable center control room 110 and a console 120 in the center control room. In specific use, at least one pair of rolling wheels can be arranged at the bottom of the main body 1 to move, and the central controller can respectively control the rolling wheels to move or stop through a power device connected with the rolling wheels and used for driving the rolling wheels to move and a braking device connected with the rolling wheels.
Locate hoist and mount subassembly 2 in the main part, it can hoist the prefab and adjust the hoist and mount direction, hoist and mount subassembly 2 can be by its moving direction and displacement of first controller control. The hoisting assembly can comprise conventional hoisting components such as a crane boom, a lifting hook, a hoisting rope, a hoisting tackle and the like.
Locate alignment subassembly 3 in the main part, it is used for with the prefab hoist and mount to the prefab and adjust concatenation position to the assigned position after the assigned range on the road surface of laying in advance, but its clamping head 310 of centre gripping prefab, with link mechanism 320 that clamping head 310 links to each other, it can be by the second controller through control link mechanism 320 adjustment clamping head 310's moving direction and displacement. The clamping head 310 comprises an angle fixing piece which is sleeved on a corner fixing clamping piece of the prefabricated member which is not contacted with other prefabricated members, and can also comprise a claw-shaped component which can grasp and fix the prefabricated member, wherein a piezoelectric ceramic brake controlled by the second controller is arranged in the fixing piece.
The fixing piece is of a double-layer structure and comprises a fixing wrapping edge and a pair of mutually perpendicular telescopic extending edges, wherein one corner of the inner layer, which is used for accommodating the prefabricated part, and the accessory range of the fixing wrapping edge are arranged, the pair of mutually perpendicular telescopic extending edges extend from the perpendicular corner outside the fixing wrapping edge respectively, and the piezoelectric ceramic brake is arranged in the fixing wrapping edge. The mounting is transparent material, just be equipped with the telescopic scale in the extension limit. The connecting rod mechanism is fixedly connected with the fixing piece, and the connecting rod mechanism is connected with the extending edge and can support the prefabricated part to move. The concrete link mechanism structure can be similar to a hoisting arm of a hoisting assembly, but does not need to work at a high place, and only supports the clamping head to drive the prefabricated member to move front and back and left and right on a plane. The fixed edge of the fixing piece is provided with the piezoelectric ceramic brake controlled by the second controller, so that the control of the fine displacement of the clamping head is realized, and the width of the splicing seam between the prefabricated member and the adjacent prefabricated member can be conveniently and accurately controlled within a first preset range.
Locate detection subassembly 4 in the main part, it is including the rotatable camera that is used for the seam width detection device of real-time detection prefab and adjacent prefab's concatenation seam width and the position of monitoring prefab, can correspond and set up the controller, by its switching of central controller control, also can artificially control its switching, seam width detection device includes capacitance displacement sensor. The capacitance displacement sensor has better detection precision for tiny displacement, so that the measurement result is more accurate, and the error is reduced.
And the cleaning assembly is arranged on one side of the central control room, can be controlled and started by a third controller connected to the central controller, and is used for opening the cleaning assembly to clean the pre-paved road surface before the central controller controls the hoisting assembly to hoist the prefabricated member. The cleaning assembly can clean the road surface in advance by a purging device, so that the construction quality is improved, and the influence of sundries on construction is avoided.
Locate control cabinet 120 in the main part, it is inside including the drive hoist and mount subassembly and the power device who aligns the subassembly with be connected to power device central controller, central controller is connected to respectively first controller the second controller and detection module, central controller is used for first through first controller control hoist and mount subassembly hoist and mount prefab to appointed scope, then control wide detection device of seam and camera are launched, control through the second controller the holding head removes, makes prefab horizontal direction and vertical direction all align with other prefabs, and the concatenation seam width that detects in real time is in first preset scope. The main part 1 includes open and close central control room 110 that can hold operating personnel, hoist and mount subassembly 2 align the subassembly 3, locate one side of central control room 110, control cabinet 120 locates in the central control room, improve the security performance of device, reduce accident's emergence.
The detection assembly further comprises:
road flatness detection device including the road flatness detector and be connected to road flatness detection device's roughness detects the controller, the roughness detects the controller and is connected to central controller, central controller is before control hoist and mount subassembly hoist and mount prefab, earlier by roughness detection controller control road flatness detects the road flatness of laying the road surface in advance, if the road flatness of laying the road surface in advance is in the second and predetermines the scope, again by control through first controller hoist and mount subassembly hoist and mount prefab.
The use method of the road pavement preassembly device disclosed by the invention comprises the following steps as shown in figure 2:
firstly, a central controller controls a cleaning assembly to clean a pre-paved road through a second controller, then a flatness detection controller controls road flatness to detect the road flatness of the pre-paved road, if the road flatness of the pre-paved road is in a second preset range, then a hoisting assembly is controlled to hoist a prefabricated part to a specified range through the first controller according to the step S110, namely, the central controller in a control console on a main body controls the hoisting assembly to hoist the prefabricated part to the specified range through the first controller, such as the square range of the ground to be paved.
Step two, step 120 the central controller controls the starting of the seam width detection device and the camera, namely the starting of the seam width detection device for detecting the width of the splicing seam between the prefabricated member and the adjacent prefabricated member in real time and the camera for monitoring the position of the prefabricated member.
Step three, step 130, the clamping head is controlled to move to the alignment of the prefabricated member, the width of the splicing seam is in a first preset range, namely the central controller controls the clamping head in the alignment assembly to move through the second controller, the clamping head moves until the camera monitors that the horizontal direction and the vertical direction of the prefabricated member are aligned with other prefabricated members, and the width of the splicing seam detected by the seam width detection device in real time is in the first preset range.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details shown and described herein without departing from the generic concept as defined by the claims and their equivalents.
Claims (9)
1. A road pavement preassembly apparatus, comprising:
a movable body;
the hoisting assembly is arranged on the main body and can hoist the prefabricated part and adjust the hoisting direction, and the moving direction and the displacement of the hoisting assembly are controlled by the first controller;
the alignment assembly is arranged on the main body and used for hoisting the prefabricated member to a specified range of a pre-paved road surface and then clamping the prefabricated member and adjusting the splicing position to a specified position, the alignment assembly comprises a clamping head capable of clamping the prefabricated member and a connecting rod mechanism connected with the clamping head, and a second controller is used for controlling the connecting rod mechanism to adjust the moving direction and displacement of the clamping head;
the detection assembly is arranged on the main body and comprises a seam width detection device and a rotatable camera, wherein the seam width detection device is used for detecting the widths of splicing seams of the prefabricated parts and the adjacent prefabricated parts in real time, the rotatable camera is used for monitoring the positions of the prefabricated parts, and the seam width detection device comprises a capacitance displacement sensor;
locate control cabinet in the main part, its inside drive including hoist and mount subassembly and alignment subassembly's power device and the central controller who is connected to power device, central controller is connected to respectively first controller the second controller and detection module, central controller is used for first through first controller control hoist and mount subassembly hoist and mount prefab to appointed scope, then control wide detection device of seam and camera are launched, control through the second controller the holding head removes, makes prefab horizontal direction and vertical direction all align with other prefabs, and the splice seam width that real-time detection detected is in first preset range.
2. The road pavement preassembly device according to claim 1, wherein the clamping head comprises an angle fixing piece which is sleeved on one corner of the prefabricated member and is not in contact with other prefabricated members, and a piezoelectric ceramic brake controlled by the second controller is arranged in the angle fixing piece.
3. The road pavement preassembly device of claim 2, wherein the fixing member is a double-layer structure including a fixing flange of the inner layer for receiving a corner of the preform and a pair of mutually perpendicular extending flanges extending from the perpendicular corners respectively outside the fixing flange, the piezoceramic brake being disposed in the fixing flange.
4. The road pavement preassembly device of claim 3, wherein the fixing member is made of a transparent material, and a retractable scale is arranged in the extending edge.
5. The road pavement preassembly apparatus of claim 1, wherein the detection assembly further comprises:
road flatness detection device and be connected to road flatness detection device's roughness detection control ware, the roughness detection control ware is connected to central controller, central controller before control hoist and mount subassembly hoist and mount prefab, earlier by roughness detection control ware control road flatness detects the road flatness of laying the road surface in advance, if the road flatness of laying the road surface in advance is in the second and predetermines the scope, again by control through first controller hoist and mount subassembly hoist and mount prefab.
6. The road pavement preassembly device of claim 5, wherein the body comprises an openable and closable central control room, the hoisting assembly and the alignment assembly are arranged on one side of the central control room, and the console is arranged in the central control room.
7. The road pavement preassembly apparatus of claim 6, further comprising:
and the cleaning assembly is arranged on one side of the central control room, is controlled to be started by a third controller connected to the central controller, and is used for opening the cleaning assembly to clean the pre-paved road surface before the central controller controls the hoisting assembly to hoist the prefabricated member.
8. Use of a road pavement preassembly apparatus according to claim 5, comprising the steps of:
step one, a central controller in a console on a main body is used for controlling a hoisting assembly to hoist a prefabricated part to a specified range through a first controller;
secondly, starting the seam width detection device for detecting the widths of splicing seams of the prefabricated parts and the adjacent prefabricated parts in real time and a camera for monitoring the positions of the prefabricated parts;
and step three, the central controller controls the clamping head in the alignment assembly to move through the second controller, the clamping head moves until the horizontal direction and the vertical direction of the prefabricated part are aligned with other prefabricated parts, and the width of the splicing seam detected in real time is within a first preset range.
9. The method for using the road surface preassembly device according to claim 8, wherein in the first step, the central controller controls the cleaning assembly to clean the pre-paved road surface through the third controller, then the flatness detection controller controls the road surface flatness to detect the road surface flatness of the pre-paved road surface, and if the road surface flatness of the pre-paved road surface is within the second preset range, the first controller controls the hoisting assembly to hoist the prefabricated member to the specified range.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010781159.7A CN111893845B (en) | 2018-05-14 | 2018-05-14 | Road pre-assembling device |
| CN201810455394.8A CN108625263B (en) | 2018-05-14 | 2018-05-14 | Road pavement preassembling device and using method thereof |
| CN202010781150.6A CN111893844B (en) | 2018-05-14 | 2018-05-14 | Use method of road pavement preassembly device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810455394.8A CN108625263B (en) | 2018-05-14 | 2018-05-14 | Road pavement preassembling device and using method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010781159.7A Division CN111893845B (en) | 2018-05-14 | 2018-05-14 | Road pre-assembling device |
| CN202010781150.6A Division CN111893844B (en) | 2018-05-14 | 2018-05-14 | Use method of road pavement preassembly device |
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| Publication Number | Publication Date |
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| CN108625263A CN108625263A (en) | 2018-10-09 |
| CN108625263B true CN108625263B (en) | 2020-11-03 |
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| CN201810455394.8A Active CN108625263B (en) | 2018-05-14 | 2018-05-14 | Road pavement preassembling device and using method thereof |
| CN202010781150.6A Active CN111893844B (en) | 2018-05-14 | 2018-05-14 | Use method of road pavement preassembly device |
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| CN206368016U (en) * | 2017-01-03 | 2017-08-01 | 湖南联智桥隧技术有限公司 | A kind of concrete guardrail quick-assembling equipment |
| CN106677036A (en) * | 2017-02-23 | 2017-05-17 | 湖南品智工程技术有限公司 | Automatic paving construction equipment for bricks for walkway |
| CN106906722A (en) * | 2017-03-15 | 2017-06-30 | 中交第三公路工程局有限公司 | Bituminous paving slope control system |
| CN107022938A (en) * | 2017-04-26 | 2017-08-08 | 中国十九冶集团有限公司 | Precast concrete road system and construction method |
| CN107245927B (en) * | 2017-07-07 | 2019-07-19 | 中国十五冶金建设集团有限公司 | Pavement of road pre-installs constructing structure and its construction method |
| CN107244620B (en) * | 2017-07-31 | 2019-07-16 | 中国五冶集团有限公司 | Spliced road deck hoisting structure |
| CN107542017A (en) * | 2017-08-28 | 2018-01-05 | 上海路港建设工程有限公司 | A kind of assembled road construction method |
-
2018
- 2018-05-14 CN CN202010781159.7A patent/CN111893845B/en active Active
- 2018-05-14 CN CN201810455394.8A patent/CN108625263B/en active Active
- 2018-05-14 CN CN202010781150.6A patent/CN111893844B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111893844B (en) | 2022-11-08 |
| CN111893844A (en) | 2020-11-06 |
| CN111893845A (en) | 2020-11-06 |
| CN111893845B (en) | 2022-10-28 |
| CN108625263A (en) | 2018-10-09 |
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