CN115125796A - A laser ultrasonic paver and its construction technology - Google Patents

Abstract

The invention discloses a laser ultrasonic paver and a construction process thereof, comprising a traveling car and a traveling wheel installed at the bottom of the traveling wheel, the traveling wheel is rollingly connected on a track, and the top of the traveling car is connected with a lifting seat through a lifting assembly. In the present invention, the length of the above-mentioned components is matched with the width of the road surface by adding the corresponding extension truss, the spiral distribution shaft, the rolling roller and the scraper. The height of the seat and its accessory parts, the traveling car moves forward along the track, the spiral distribution shaft distributes the material from the middle to the two sides, the rolling roller rolls the material body, and the vibrating rod vibrates the material body to improve the compactness of the material body. , and the height of the lower telescopic plate and the vibrating rod on it can be adjusted through the third cylinder to change the vibration depth of the vibrating rod, and finally the material body is smoothed by the scraper, and the paving, vibrating and smoothing are completed at one time. process.

Description

A laser ultrasonic paver and its construction technology

technical field

The invention relates to the technical field of road construction, in particular to a laser ultrasonic paver and a construction process thereof.

Background technique

The rapid development of construction machinery and equipment manufacturing technology has boosted the progress of construction technology, especially in the direction of paving and leveling of highway bridge deck paving, among which the laser ultrasonic paver is unique in the rapid paving and leveling of the whole width. Advantages are more and more widely used in engineering practice.

The bridge deck paving is the part that connects the asphalt concrete pavement layer and the prefabricated beam surface. The concrete leveling layer is used to disperse the concentrated load of the vehicle wheel weight. The existing paving equipment has poor adjustability, a small scope of application, and a large demand for labor.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the shortcomings existing in the prior art, and propose a laser ultrasonic paver and its construction technology. The paver can be paved, vibrated, and leveled at one time. Reduce the use of machinery and labor, and shorten the construction period.

In order to achieve the above object, the present invention adopts the following technical solutions:

A laser ultrasonic paver includes a traveling car and a traveling wheel installed at the bottom of the traveling wheel, the traveling wheel is rollingly connected on a track, the top of the traveling car is connected with a lifting seat through a lifting assembly, and the lifting seat is hinged with an inclination angle adjustable. Adjust the rotating seat, the side of the rotating seat away from the lifting seat is connected with a fixed truss, the fixed truss is detachably connected with a connecting truss, and there are screw distribution shafts, rolling rollers, upper telescopic plates and lower telescopic plates under the elongated truss. , the lengths of the spiral distribution shaft and the grinding roller can be increased or decreased, and the spiral blades on the spiral distribution shaft are arranged symmetrically. The distance between the upper telescopic plate and the lower telescopic plate is adjustable, the bottom of the lower telescopic plate is connected with a plurality of vibrating rods, and the side wall of the rotating seat is hinged with a scraper with adjustable length.

Preferably, the rotating base is hinged with the lifting base through a hinge base, the top of the rotating base is hinged with a second cylinder, and the output end of the second cylinder is hinged with the lifting base.

Preferably, the lift assembly includes a first cylinder connected to the four corners of the top of the traveling vehicle, and the output end of the first cylinder is connected to the lift base.

Preferably, the ends of the two adjacent sections of the spiral distribution shaft and the grinding roller are provided with inner holes, the inner holes are provided with connecting shafts, the outer rings of the connection shafts are connected with raised ribs, and the inner rings of the inner holes are provided with There is a limit groove corresponding to the convex edge.

Preferably, a third cylinder is installed on the upper telescopic plate, the output end of the third cylinder is connected to the lower telescopic plate, the vibrating rods are arranged in multiple rows along the length direction of the lower telescopic plate, and two adjacent rows of vibrating rods intersect set up.

Preferably, both the upper telescopic plate and the lower telescopic plate include plate bodies, and one of the plate bodies is connected with a connecting plate, the connecting plate is inserted into the other plate body, and the side wall of the plate body is threadedly connected with fastening bolts .

Preferably, the scraper is composed of multiple sections of long plates, and the sides of the long plates are connected with connecting ears, the connecting ears are connected by connecting bolts, the upper end of the scraper is rotatably connected with the rotating seat through a hinge shaft, and the hinge shaft is sleeved There is a torsion spring, and the two ends of the torsion spring are respectively connected with the hinge shaft and the rotating seat.

Preferably, the ends of the fixed truss and the extension truss are connected with connecting plates, and the connecting plates are connected by bolts.

Preferably, a lighting device is installed on the fixed truss, and a lidar rangefinder is installed on the rotating base.

A construction technique of a laser ultrasonic paver, the technique comprises the following steps:

Step 1: Bridge deck cleaning: Before the construction of the bridge deck, use a chisel machine to chisel the top surface of the T beam, especially the uneven loose concrete at the junction of the wet joint and the T beam surface. The depth should not be too deep to avoid damaging the structural layer of the T beam. After chiseling, use a hair dryer to blow off the sundries and clean the beam surface;

Step 2: Installation of steel bars, mesh sheets and drain pipes;

Step 3: Measure and stake out: The surveyor conducts track positioning and track elevation measurement on the top of the anti-collision wall. During the measurement, a decoration point is placed every 8m in the straight section, and a pile point is placed every 6m in the curved section, so as to facilitate accurate control during concrete pouring Pour the top surface elevation, each pile point is identified and numbered;

Step 4: Install the paver, and adjust the paver according to the width, thickness and slope of the paving;

Step 5: Concrete pouring;

Step 6: Concrete curing;

Step 7: Cut the seam: After the bridge deck concrete is poured and leveled, the fake seam should be cut in time. The bridge deck should be set with 1 horizontal shrinkage joint at every 10m interval along the line direction. The depth of the seam is 3cm, and the seam is filled with asphalt mastic.

Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention makes the length of the above-mentioned components match the width of the road surface by adding the corresponding extension truss, helical distribution shaft, rolling roller and scraper. The radar range finder measures the height, and adjusts the height of the lift seat and its accessory parts through the first cylinder, the traveling car moves forward along the track, the spiral distribution shaft distributes material from the middle to the two sides, and the rolling rollers roll the material body and vibrate the material. The rod vibrates the material body to improve the density of the material body, and the height of the lower telescopic plate and the vibrating rod on it can be adjusted through the third cylinder to change the vibration depth of the vibrating rod. Smoothing, the process of paving, vibrating and troweling is completed at one time, and the angle between the rotating seat and the lifting seat is changed by the second air cylinder, so that the auger distribution shaft and the rolling roller are inclined, and the paving is carried out on the slope. Has high applicability.

Description of drawings

In order to more specifically and intuitively describe the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that are required in the description of the embodiments or the prior art.

Fig. 1 is the structural representation one proposed by the present invention;

Fig. 2 is the structural representation two proposed by the present invention;

3 is a schematic structural diagram three proposed by the present invention;

Fig. 4 is a schematic diagram of the connection structure of the spiral cloth shaft and the grinding roller;

FIG. 5 is a schematic diagram of the adjustment structure of the upper telescopic plate and the lower telescopic plate.

In the figure: traveling car 1, traveling wheel 2, first cylinder 3, lifting seat 4, second cylinder 5, rotating seat 6, fixed truss 7, connecting truss 8, screw distribution shaft 9, rolling roller 10, hinged seat 11. Connecting plate 12, vibrating rod 13, upper telescopic plate 14, lower telescopic plate 15, third cylinder 16, scraper 17, connecting ear 18, connecting shaft 19, ridge 20, plate body 21, connecting plate 22, tightening Fasten bolts 23.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

1-5, a laser ultrasonic paver includes a traveling car 1 and a traveling wheel 2 installed at the bottom of the traveling wheel 2. The traveling wheel 2 is rollingly connected on the track, and the top of the traveling car 1 is connected with a lifting seat 4 through a lifting assembly. The lifting seat 4 is hinged with a rotating seat 6 with an adjustable inclination angle. The side of the rotating seat 6 away from the lifting seat 4 is connected with a fixed truss 7. The fixed truss 7 is detachably connected with a connecting truss 8. There is a spiral distribution shaft 9, a rolling roller 10, an upper telescopic plate 14 and a lower telescopic plate 15, the lengths of the spiral distribution shaft 9 and the grinding roller 10 can be increased or decreased, and the spiral blades on the spiral distribution shaft 9 are arranged symmetrically, Both the auger shaft 9 and the grinding roller 10 are rotatably connected to the rotating base 6 and driven by the drive assembly. The upper telescopic plate 14 is connected to the rotating base 6, the distance between the upper telescopic plate 14 and the lower telescopic plate 15 is adjustable, and the bottom of the lower telescopic plate 15 is connected. There are a plurality of vibrating rods 13 , a scraper 17 with adjustable length is hinged on the side wall of the rotating base 6 , a lighting device is installed on the fixed truss 7 , and a lidar range finder is installed on the rotating base 6 .

According to the width of the road surface, install the corresponding extension truss 8, helical distribution shaft 9, rolling roller 10 and scraper 17 to make the length of the above components match the width of the road surface, measure the height with a lidar range finder, and Adjust the height of the lift seat 4 and its accessories by the first air cylinder 3, the traveling carriage 1 moves forward along the track, the auger shaft 9 distributes the material from the middle to the two sides, the rolling roller 10 rolls the material body, and the vibrating rods 13 The material body is vibrated to improve the density of the material body, and the height of the lower telescopic plate 15 and the vibrating rod 13 on it can be adjusted through the third air cylinder 16 to change the vibration depth of the vibrating rod 13. The material body is troweled, and the steps of paving, vibrating and troweling are completed at one time, and the angle between the rotating seat 6 and the lifting seat 4 is changed by the second air cylinder 5, so that the auger shaft 9 and the rolling roller 10 are inclined. , Paving on slopes, with high applicability.

In this embodiment, the rotating base 6 is hinged with the lifting base 4 through the hinge base 11 , the top of the rotating base 6 is hinged with the second cylinder 5 , and the output end of the second cylinder 5 is hinged with the lifting base 4 for adjusting the rotation base 6 and the lifting base 4 . The included angle of the lift seat 4 realizes paving on the slope.

In this embodiment, the lifting assembly includes a first cylinder 3 connected to the four corners of the top of the traveling carriage 1, and the output end of the first cylinder 3 is connected to the lifting seat 4 for adjusting the height of the lifting seat 4 and changing the paving thickness.

In this embodiment, the ends of the two adjacent sections of the spiral distribution shaft 9 and the grinding roller 10 are provided with inner holes, and the inner holes are provided with a connecting shaft 19, and the outer ring of the connecting shaft 19 is connected with a convex rib 20, and the inner hole is provided with a connecting shaft 19. The inner ring of the hole is provided with a limit groove corresponding to the rib 20 , and the transmission of torque is realized by connecting the shaft 19 and the rib 20 .

In this embodiment, a third cylinder 16 is installed on the upper telescopic plate 14 , the output end of the third cylinder 16 is connected to the lower telescopic plate 15 , and the vibrating rods 13 are arranged in multiple rows along the length direction of the lower telescopic plate 15 , and two adjacent two The rows of vibrating rods 13 are arranged crosswise to improve the vibrating efficiency.

In this embodiment, both the upper telescopic plate 14 and the lower telescopic plate 15 include plate bodies 21 , and a connecting plate 22 is connected to one of the plate bodies 21 , and the connecting plate 22 is inserted into the other plate body 21 , and the plate body 21 The side wall of the shovel is threadedly connected with fastening bolts 23, which are used to adjust the length of the upper telescopic plate 14 and the lower telescopic plate 15. The scraper 17 is composed of multi-segment long plates, and the sides of the long plates are connected with connecting ears 18. The connecting ears 18 is connected by connecting bolts, and the upper end of the scraper 17 is rotatably connected with the rotating seat 6 through the hinge shaft, and a torsion spring is sleeved on the hinge shaft, and the two ends of the torsion spring are respectively connected with the hinge shaft and the rotating seat 6, using the torsion spring The resilient force provides the pressure of the scraper 17 on the ground, and improves the leveling force of the material body.

In this embodiment, the ends of the fixed truss 7 and the extension truss 8 are connected with connecting plates 12, and the connecting plates 12 are connected by bolts, and the truss is lengthened by the connection of the fixed truss 7 and the elongated truss 8.

A construction technique of a laser ultrasonic paver, the technique comprises the following steps:

Step 1: Bridge deck cleaning: Before the construction of the bridge deck, use a chisel machine to chisel the top surface of the T beam, especially the uneven loose concrete at the junction of the wet joint and the T beam surface. The depth should not be too deep to avoid damaging the structural layer of the T beam. After chiseling, use a hair dryer to blow off the sundries and clean the beam surface;

Step 2: Installation of steel bars, mesh sheets and drain pipes

Before the rebar mesh is laid, the anchoring bars reserved on the T beam surface shall be pryed up, and 2.3m×6m mesh shall be laid, with no less than 4 spacers per square meter to ensure the thickness of the protective layer of the rebar mesh, and Note that the lap length is at least 20cm. After the mesh is laid, the vertical anchoring bars on the T-beam are bent at the second time to avoid displacement of the steel bars during the pouring process, and the joints are securely bound with steel wires. After the mesh is installed, check the thickness of the protective layer of the steel mesh by hanging the horizontal bridge along the lofting height of the anti-collision walls on both sides to prevent the leakage of the reinforcement. For the low-slope side of the negative bending moment area of the bridge deck with continuous structure, a cast iron drain pipe should be installed at the bottom of the anti-collision wall, and one drain pipe should be set at 5m. During installation, the installation elevation of the cast iron pipe should be strictly controlled. The top surface of the concrete installed is slightly lower than about 1cm, which is conducive to the drainage of rainwater in the later stage. After the mesh is laid, the beam surface is cleaned for the second time to ensure that the beam surface is kept clean and moist before the pavement is poured;

Step 3: Measure and stake out: The surveyor conducts track positioning and track elevation measurement on the top of the anti-collision wall. During the measurement, a decoration point is placed every 8m in the straight section, and a pile point is placed every 6m in the curved section, so as to facilitate accurate control during concrete pouring Pour the top surface elevation, each pile point is identified and numbered;

Step 4: Install the paver, and adjust the paver according to the width, thickness and slope of the paving;

Step 5: Concrete pouring

The bridge deck concrete is generally poured with a sky pump, and the workability and slump of the concrete are strictly controlled. By controlling the movement of the sky pump boom, the paving of the concrete is ensured to ensure that the concrete is spread evenly, and the height of the paving material is controlled at a certain ratio. The roller shaft is slightly higher than 1-2cm, and the front corners of the roller shaft are paved and leveled manually with a shovel and iron rake. The concrete falls back and densifies, and then starts the paver operation, and then uses the paver for vibrating and leveling. The length of each paving surface is controlled to be about 5m, and the front and back of each paving are repeatedly vibrated and rolled. 3 to 5 times, until the paving layer is dense and smooth, the outer edge of the paver track and the anti-collision wall are vibrated by the plug-in vibrator until the concrete does not sink, no air bubbles appear, and the surface appears laitance So far, the junction between the bottom of the anti-collision wall and the top surface of the paving is manually smoothed with a trowel. Concrete pouring is completed for about 2-3 hours. Before the concrete strength is initially formed, the matching driving grinder is used to plaster the surface. When grinding the surface, you must grasp the timing. Too early or too late will directly affect the plastering effect. Generally, 1 set The paver is equipped with 2 driving trowels, and the trowels are repeatedly rubbed 3 to 5 times until the paving surface reaches a certain level of flatness and density. According to the thickness of the pavement layer, the plug formwork shall be installed at the construction joint, and the chisel treatment shall be performed at the same time to clean the floating slurry;

Step 6: Concrete Curing

After the concrete paving is completed, shrinkage cracks are prone to occur, especially in high temperature weather. Therefore, the maintenance work after the paving is completed is very important. In summer, it is covered with geotextile, and the sprinkler is regularly sprinkled for maintenance to prevent moisture. A lot of evaporation, resulting in shrinkage cracks, reducing the practical life of the road;

Step 7: Cutting the seam: After the bridge deck concrete is poured and leveled, the fake seam should be cut in time, otherwise, under the action of temperature stress, transverse irregular cracks will soon occur, which will affect the service life of the bridge deck. One horizontal shrinkage joint is set at every 10m interval in the road direction (one shrinkage joint is set at the top of each pier).

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (10)

1. A laser ultrasonic paver comprises a walking vehicle (1) and walking wheels (2) arranged at the bottom of the walking vehicle, wherein the walking wheels (2) are connected on a track in a rolling manner, the top of the walking vehicle (1) is connected with a lifting seat (4) through a lifting assembly, the lifting seat (4) is hinged with a rotating seat (6) with an adjustable inclination angle, one side of the rotating seat (6) far away from the lifting seat (4) is connected with a fixed truss (7), the fixed truss (7) is detachably connected with a lengthening truss (8), a spiral distributing shaft (9), a material grinding roller (10), an upper expansion plate (14) and a lower expansion plate (15) are respectively arranged below the lengthening truss (8), the lengths of the spiral distributing shaft (9) and the material grinding roller (10) can be increased and decreased, helical blades on the spiral distributing shaft (9) are symmetrically arranged, the spiral distributing shaft (9) and the material grinding roller (10) are both rotatably connected with the rotating seat (6) and driven by a driving assembly, go up expansion plate (14) and rotate seat (6), go up expansion plate (14) and lower expansion plate (15) interval adjustable, lower expansion plate (15) bottom is connected with a plurality of vibrting spears (13), and the lateral wall that rotates seat (6) articulates there is length-adjustable scraper blade (17).

2. The laser ultrasonic paver of claim 1, characterized in that the rotating seat (6) is hinged to the lifting seat (4) through a hinge seat (11), the top of the rotating seat (6) is hinged to a second cylinder (5), and the output end of the second cylinder (5) is hinged to the lifting seat (4).

3. The laser ultrasonic paver of claim 2, characterized in that the lifting assembly comprises first cylinders (3) connected to four corners of the top of the walking vehicle (1), and the output ends of the first cylinders (3) are connected with the lifting seats (4).

4. The laser ultrasonic paver of claim 3 characterized in that the ends of two adjacent sections of the spiral distributing shaft (9) and the material grinding roller (10) are provided with inner bores, connecting shafts (19) are arranged in the inner bores, the outer rings of the connecting shafts (19) are connected with convex edges (20), and the inner rings of the inner bores are provided with limiting grooves corresponding to the convex edges (20).

5. The laser ultrasonic paver of claim 4, characterized in that the upper stretching plate (14) is provided with a third cylinder (16), the output end of the third cylinder (16) is connected with the lower stretching plate (15), the vibrating rods (13) are arranged in a plurality of rows along the length direction of the lower stretching plate (15), and two adjacent rows of the vibrating rods (13) are arranged in a cross manner.

6. The laser ultrasonic paver of claim 5, characterized in that the upper retractable plate (14) and the lower retractable plate (15) both comprise plate bodies (21), one of the plate bodies (21) is connected with a connecting plate (22), the connecting plate (22) is inserted into the other plate body (21), and the side wall of the plate body (21) is in threaded connection with a fastening bolt (23).

7. The laser ultrasonic paver of claim 6 characterized in that scraper blade (17) comprises the multistage long slab, and the avris of long slab is connected with engaging lug (18), and engaging lug (18) pass through connecting bolt and connect, and the upper end of scraper blade (17) is passed through the articulated shaft and is rotated seat (6) and rotate and be connected, and has cup jointed the torsional spring on the articulated shaft, and the both ends of torsional spring are connected with the articulated shaft and rotate seat (6) respectively.

8. The laser ultrasonic paver of claim 7, characterized in that the ends of the fixed truss (7) and the elongated truss (8) are connected with connecting plates (12), and the connecting plates (12) are connected through bolts.

9. The laser ultrasonic paver of claim 8, characterized in that the fixed truss (7) is provided with a lighting device, and the rotating seat (6) is provided with a laser radar distance meter.

10. The process for constructing a laser ultrasonic paver of any one of claims 1 to 9 where the process includes the steps of:

the method comprises the following steps: bridge floor cleaning: before bridge deck construction, chiseling floating slurry on the top surface of a T-shaped beam by using a chiseling machine, particularly chiseling and removing uneven loose concrete at the junction of a wet joint and the beam surface of the T-shaped beam, wherein the chiseling depth cannot be too deep, so that the structural layer of the T-shaped beam is prevented from being damaged, blowing sundries clean by using a blower after chiseling, and cleaning the beam surface;

step two: installing reinforcing steel bars, meshes and a water drain pipe;

step three: measuring and lofting: a measurer carries out track positioning and track elevation measurement on the top of the anti-collision wall, 1 installing point is placed at every 8m of a straight line segment and 1 pile point is placed at every 6m of a curve segment during measurement, so that the elevation of a pouring top surface is accurately controlled during concrete pouring, and each pile point is marked and numbered;

step four: installing a paver, and adjusting the paver according to the paving width, thickness and gradient;

step five: pouring concrete;

step six: curing the concrete;

step seven: cutting a seam: after bridge deck pavement concrete pouring is finished, a false seam is cut in time, 1 transverse contraction seam is arranged at the interval of 10m along the bridge deck along the line direction, the contraction seam is a saw cutting false seam, the width of the seam is 5mm, the depth of the seam is 3cm, and asphalt mastic is filled in the seam.

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