JPH10306406A - Finisher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a need for rails, to uniformly lay a pavement material, and to perform compaction and finishing. SOLUTION: A moving base 32 is provided with a screed 33, a damper 36, and a mold plate 42. The left side of the moving base 32 is suspended by front and rear hydraulic cylinders 27 and 28, and the right side is suspended by a hydraulic cylinder 29. The height of the moving base 32 is regulated on a basis of the height of a rope 60. Devices are operated according to the gradient of a paved road H and inclination in the direction of width of the paved road H and leveling in a specified thickness is applied on an existing paved road H.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a finisher which spreads paving materials such as steel fiber concrete, resin concrete, and slurry sheet.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open Publication No.
Japanese Patent Publication No. 02-2003 discloses a hopper fixedly supported by a fuselage and having upper and lower portions opened, a screw spreader for laterally feeding a pavement material fed into the hopper from a central portion to both sides of the fuselage, and a screw spreader. A screed having an inclined surface located behind the screed and vibrated by an exciter, and a two-way damper located behind the screed and alternately repeating up and down movements have been proposed. This spreader is the same as that on page 2, upper right column, Nos. 13-16.
As described in the row, the aircraft was
Traveling on the rails is enabled by the traveling wheels of the place, each traveling wheel can be controlled in the vertical direction by a hydraulic device, and the third page, left column, lines 13 to 15, The paving material charged into the hopper is laterally fed left and right from the central portion by the spiral wings of the screw spreader, and, as described in page 3, left column, lines 9-11,
A finish having a finish surface is connected to the rear of the concrete finisher.

[0003] Furthermore, Japanese Utility Model Publication No. 59-3
No. 8490 proposes an equalizing and compacting device for steel fiber concrete, which is a hopper section, a screw type spreader section and a vibration damper section sequentially from the front of a self-propelled bogie equipped with a crawler. As described in the same publication, page 2, left column, lines 27-28, etc., a vibration damper is mounted between both crawlers behind a screw feeder provided on a self-propelled bogie. As described in the same publication, page 2, right column, lines 8 to 14,
A vibrating screed plate device is provided at the rear of the traveling trolley for traction on the compacted pavement surface for further compaction. The vibrating screed plate device is pivotally pivoted at one end to the traveling trolley. The arm is rotatably supported by a rear pillar and an adjusting screw rod which can be raised and lowered by the action of a hydraulic cylinder. The vibrating screed plate device finishes pavement.

[0004]

SUMMARY OF THE INVENTION
Since rails are laid on both sides of the pavement and the height of the screw spreader etc. is adjusted based on this rail, if the rail is laid corresponding to the height of the finishing surface, the screw spreader and the finishing part Can be constructed with a uniform height. However, since the reference rail must be laid accurately, the work of laying the rail becomes complicated. Furthermore, since the device has track wheels, there is a problem in that transportation and installation work on the rail and the like become complicated.
Furthermore, since the rails are used, the working width is larger than the width of the actual pavement, and it is difficult to use them on narrow roads. In addition, when performing construction on a curved road or the like, there is a restriction that a curved rail must be used. Furthermore, since the pavement material in the hopper is directly fed laterally by the screw spreader, there is a possibility that the mixing of the concrete and the steel fiber becomes insufficient, so that two dampers are required for compaction. There was also a problem that the device became complicated.

On the other hand, in the above-mentioned flattening and squeezing device, since the crawlers are run by crawlers, rails are not required, workability is improved, and work on curved roads becomes easy. However, unlike those that finish the pavement surface based on the rails described above, it is difficult to adjust the height of the vibration damper and screw feeder, and if the running surface of the crawler is not parallel to the pavement surface, the pavement surface can be constructed as planned. Difficult,
For example, after compaction by a vibration damper located in front of a bogie, there was a problem that the rear screw feeder floated up on the compacted pavement surface or bitten more than necessary and did not work effectively. .

Accordingly, an object of the present invention is to provide a finisher which does not require rails and can uniformly spread, compact and finish paving materials.

[0007]

According to a first aspect of the present invention, there is provided a hopper provided at a front portion of a vehicle body and a pavement material fed into the hopper is laterally fed from a central portion to both sides of the vehicle body. A finisher including a screw spreader, a screed located behind the screw spreader and vibrated by a vibrator, a damper located behind the screed and moving up and down, and a finishing portion provided behind the damper In the above, a traveling means is provided on the vehicle body, and the screed, damper, and finishing part are provided on a movable base, and the movable base is provided on the vehicle body so as to be able to move up and down and tilt by an elevating device. A height adjusting device for adjusting the height of the movable base is provided.

According to a second aspect of the present invention, a rotary stirring device is provided in front of the screw spreader.

According to the first aspect of the present invention, the height of the vehicle body traveling by the traveling means moves up and down with respect to the pavement surface depending on the traveling surface height of the traveling means, but the elevation device is driven by the height adjustment device. Height adjustment is performed, whereby the screed, damper and finish at the desired height level the pavement,
Perform compaction and finishing.

According to the second aspect of the present invention, the paving material is uniformly stirred by the rotary stirring device before being laterally fed by the screw spreader.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 6 show a first embodiment of the present invention. In the drawings, reference numeral 1 denotes a body of a finisher, and a pair of right and left running means tires 2 are provided on the front side of the body 1. A pair of left and right crawlers 3 driven by hydraulic pressure are provided on the rear side of the crawler 2.
A hopper 4 is provided at a front part of the vehicle body 1, and a starting point side of a belt conveyor 5 is located below the hopper 4, and the belt conveyor 5 is provided at a lower part of the vehicle body 1 in a front-rear direction of the vehicle body 1. . At the end point side of the belt conveyor 5, a biaxial pug mill mixer 6 serving as a rotary stirring device is disposed.
The rotary shaft 7 is supported between the front and rear, and
Are provided with a plurality of stirring blades 8, and the rotary shafts 7, 7 are rotationally driven by front and rear hydraulic motors 9, 9 to stir the pavement material. Behind the pug mill mixer 6, a screw spreader 10 as a traversing device is disposed.
The screw spreader 10 supports a pair of left and right rotating shafts 11 and 12 at a lower portion of the vehicle body 1.
Are provided with spiral wings 13, respectively, and the left and right rotating shafts 11, 12 are rotationally driven in opposite directions by hydraulic motors (not shown) provided on the vehicle body 1 to laterally feed the pavement material 14 to the left and right sides. If the spiral directions of the left and right spiral blades 13 are opposite,
By driving the left and right rotating shafts 11 and 12 to rotate in the same direction, the pavement material 14 can be laterally fed to the left and right sides.

At the rear of the vehicle body 1, a gate formwork 21 is fixed,
On the rear surface of the gate frame 21, upper and lower rails 22 and 23 are provided in the left and right direction, respectively. A downward groove is formed on the upper rail 22, and an upward groove is formed on the lower rail 23.
Reference numeral 24 denotes a movable frame, and on the upper and lower sides of the front of the movable frame 24,
L-shaped upper and lower rails slide on the upper and lower rails 22 and 23, respectively.
Lower connecting arms 25 and 26 are provided, on which upper and lower rails 22 and 23 are provided.
The movable frame 24 can be moved in the left-right direction of the gate frame 21 by the engagement of the upper and lower connecting arms 25 and 26, and the movable frame 24 is fixed to the gate frame 21 by fixing means (not shown). it can.

As shown in FIG. 1 and FIG. 3, two hydraulic cylinders 27 and 28 as front and rear elevating devices are disposed on one side of the movable frame 24 in the right and left directions in the vehicle body traveling direction.
A hydraulic cylinder 29 serving as a lifting / lowering device is disposed at a substantially central position in the front-rear direction on the left and right sides, and these hydraulic cylinders 27, 2
The upper end of each of the hydraulic cylinders 27, 28, 29 is connected to the upper end of the movable frame 24 via the universal joint 30.
Is connected to a movable base 32 via a universal joint 31,
The movable base is moved up and down and tilted back and forth and right and left by expansion and contraction of the hydraulic cylinders 27, 28 and 29. As shown in FIG. 4, the universal joint 31 has a connection structure rotatable around two intersecting shafts 31A and 31B, and the universal joint 30 has the same connection structure.

As shown in FIG. 4, a screed 33 is provided at the front of the movable base 32 at a position behind the screw spreader 10. The screed 33 is a hollow box type elongated in the vehicle width direction. In addition, the front side of the screed 33 has a rearwardly inclined surface 33A, and a plurality of exciters 34 are provided inside the screed 33. Note that a vibrator or the like is used for the exciter. In addition, the screed 33
Side plates 35 are provided on both side surfaces of the screw spreader 10. The front sides of the side plates 35 cover both sides of the screw spreader 10. Behind the screed 33, a damper 36 in the vehicle width direction is provided, and the damper 36 supports a rotating shaft 38 at a lower portion of the movable base 32 via a bearing 37, and a plurality of An eccentric large diameter portion 38A is formed, and an upper ring portion 39A of the link arm 39 is rotatably fitted to the enlarged large diameter portion 38A, and a lower ring portion 39B of the link arm 39 is attached to the upper portion of the damper 36. Rotatably connected, movable base
When the rotary shaft 38 is rotated by a hydraulic motor 40 fixed to the lower surface of the 32, the damper 36 is guided by front and rear guides 41, and the damper 36 moves up and down via a plurality of link arms 39. A mold plate as a finishing part is provided behind the damper 36, and the mold plate 42
It has a horizontal bottom plate portion 42A that is long in the width direction of the vehicle body 1 and is fixed to the movable base 32 by a plurality of mounting portions 43. Further, on both side surfaces of the mold plate 42, finishing covers 44 are provided. The damper 36 is also provided on the movable base 32.

The movable base 32 includes the hydraulic cylinder
Supports 51 protrude in the lateral direction corresponding to 27, 28, and 29, respectively.
52, 53, and 54 are provided. These height adjustment sensors
Reference numerals 52, 53, and 54 denote ultrasonic sensors, each including an ultrasonic oscillator and a detection circuit 55, and a transmission / reception unit 56 below the ultrasonic sensor.
The detection circuit 55 detects the time until the ultrasonic wave is emitted downward from the transmission / reception unit 56, reflected and input to the transmission / reception unit 56, and the detection circuit 55 The height from the position to the position where the light is reflected is detected. Reference numeral 57 denotes a rope serving as a height reference line.
57, on both sides of the pavement H to be paved,
It is stretched corresponding to the finishing height of The sensors 52, 53, 54 are arranged above the ropes 57, 57. Reference numeral 58 denotes a control unit. The control unit 58 expands and contracts each of the hydraulic cylinders 27, 28, and 29 based on a height signal input from the detection circuit 55 of each of the height adjustment sensors 52, 53, and 54. The height of the screed 33, the damper 36 and the mold plate 42 is controlled so as to be the finishing height. A height adjusting device 59 is constituted by the height adjusting sensors 52, 53, 54 and the control unit 58. The ropes 57 are stretched by a plurality of holders 60 arranged in the length direction of the pavement H,
The holder 60 includes a leg 60A and an adjusting portion 60B capable of adjusting the height of the rope 57.

FIG. 7A is a cross section of a pavement road showing an example of construction, and FIG. 7A is an existing pavement road in which asphalt pavement 62 is applied to a concrete floor slab 61, and FIG. As shown, while cutting the asphalt pavement 62 of the pavement road, the upper part of the concrete slab 61 was cut by 10 mm, and the cut concrete slab 61 was placed on the cut concrete slab 61 as shown in FIG.
As shown in FIG. 7, a concrete pavement 63 is applied to about 50 to 80 mm, and an asphalt pavement 64 is applied thereon. The present apparatus is suitable for performing the concrete pavement 63, and the height adjusting device 59 is operated so that a distance K between the upper surface of the cut floor slab 61 and the movable base 32 is constant. . That is, the heights of the screed 33, the damper 36 and the mold plate 42 are adjusted based on the rope 57. As the concrete pavement 63, a thin concrete pavement, a steel fiber reinforced concrete pavement, a steel fiber reinforced super-rapid hardened concrete pavement, and the like are performed.

Next, the operation of the above configuration will be described.
As an example, the case where concrete mixed with steel fiber is used will be described. Pavement material 14 such as steel fiber concrete by the finisher of the present invention.
Is laid, a pavement material 14 is put into the hopper 4 from a concrete mixer (not shown) running forward, and the pavement material 14 is conveyed by the belt conveyor 5 to the rear of the vehicle body 1 by a fixed amount. The vehicle body 1 is advanced at a predetermined speed by the tires 2 and the crawlers 3, and the paving material 14 discharged from the end point of the belt conveyor 5 is first made uniform in concrete and steel fibers by the rotating biaxial pug mill mixer 6. After being agitated, the screw threader
By 10 it is traversed from the central part to both sides. The laterally fed pavement material 14 is spread and leveled by a screed 33 which vibrates up and down by an exciter 34, and furthermore, a damper 36 which moves up and down
As a result, the steel fiber is pushed into the concrete, and at the same time, the air bubbles are crushed from the surface side of the concrete and are pushed out. Thereafter, the surface is finished flat by the bottom plate portion 42A of the mold plate 42 located behind the damper 36.

In the finisher in which the paving material 14 laterally fed by the screw spreader 10 is spread and leveled by the screed 33, the damper 36 and the mold plate 42, the screed 33, the damper 36 and the mold plate 42 are used in the present invention. Rope that can be constructed according to the height of the pavement surface M and that has been adjusted on both sides of the pavement H in advance
The height of the height adjustment sensors 52, 53, 54 with respect to 57, 57 is detected, and the three hydraulic cylinders 2 are adjusted so that the lower surfaces of the screed 33 and the mold plate 42 match the construction height.
7, 28 and 29 expand and contract. And three height adjustment sensors 5
Based on 2, 53, 54, the corresponding hydraulic cylinder 2
The movable base 32 is adjusted in height and in the front-rear and left-right inclination directions, so that the screed 33 and the damper 36 correspond to the gradient of the pavement surface M and the inclination of the pavement surface M in the width direction.
And the mold blade 42 moves up and down and tilts.

As described above, in the present embodiment, the hopper 4 provided at the front portion of the vehicle body 1 and the paving material 14 put into the hopper 4 are moved from the central portion to both sides of the vehicle body 1 according to the first aspect. Screw spreader 10 that feeds each side
And the shaker located behind this screw spreader 10
Screed 33 vibrated by 34 and this screed 33
And a damper 36 that moves up and down, and the damper 36
In the finisher provided with a mold plate 42 as a finishing part provided behind, a tire 2 and a crawler 3 as running means are provided on the vehicle body 1, and a screed 33, a damper 36 and a mold plate 42 are provided on the movable base 32 The movable base 32 is suspended from the vehicle body 1 by hydraulic cylinders 27, 28 and 29 as lifting devices so as to be able to move up and down and tilt.
Since the height adjusting device 59 for adjusting the height of the movable base 32 by driving the hydraulic cylinders 27, 28, 29 is provided, the hydraulic cylinders 27, 28, 29 are driven by the height adjusting device 59. A height adjustment is made, which allows the screed 3 to reach the desired height.
3. The damper 36 and the mold plate 42 level the pavement surface M, and can be compacted and finished. In particular, in a conventional apparatus that does not use rails, it was difficult to construct a screed, a damper, and a finishing part in conformity with the existing pavement H. Since it is provided, leveling, compaction and finishing can be performed uniformly. Further, since the movable base 32 is not only movable up and down, but also tiltable, each device can be operated in accordance with the gradient of the pavement H and the inclination of the pavement H in the width direction. Can be spread at a constant thickness.

As described above, in this embodiment, the pug mill mixer 6 as a rotary stirring device is provided in front of the screw spreader 10 according to the second aspect.
Compared with the conventional apparatus, the paving material 14 can be uniformly stirred, and the screed 33 and the damper 36 can evenly spread and compact.

Further, as an effect on the embodiment, two wires per side,
Movable base via one hydraulic cylinder 27, 28, 29 on the other side
By suspending the movable base 32 on the vehicle body 1, the height and inclination of the movable base 32 can be adjusted by a simple mechanism such as three hydraulic cylinders 27, 28, 29. Height adjustment sensor 52, corresponding to 28, 29
By providing 53 and 54, those adjustments can be performed accurately. Further, unlike the method using a rail, the rope 57 can be adjusted as a reference, so that the construction is easy.

FIG. 8 shows a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. A receiving frame 71 is integrally provided at the rear, and the hydraulic cylinder 2 is mounted on the receiving frame 71.
Connect the lower parts of 7, 28 and 29 and
A movable frame 24A shown in cross section is connected to the upper portions of the movable frames 8 and 29, and the movable base 32 is fixed to the lower portion of the movable frame 24. In this example, three hydraulic cylinders 27, 28, 29
The movable base 32 moves up and down and tilts due to the expansion and contraction of each.

FIGS. 9 and 10 show a third embodiment of the present invention, in which the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. At the front left and right sides of the movable base 32, a hydraulic cylinder 27 serving as an elevating device is provided.
R and 27L are arranged. The upper ends of the hydraulic cylinders 27L and 27R are connected to the upper inside of the movable frame 24B via a universal joint 30, and the lower ends of the hydraulic cylinders 27L and 27R are connected via a universal joint 31. It is connected to a movable base 32.
Further, a pair of left and right lever-type lifting devices 81R and 81L are provided. These lever-type lifting and lowering devices 81R and 81L are provided with hydraulic cylinders 82L and 82R at substantially the center of the vehicle body 1, and these hydraulic cylinders 82R and 81L are provided.
L and 82R are vertically extended and contracted by a guide rail (not shown), and the telescopic rods of the hydraulic cylinders 82L and 82R are engaged and connected to the transmission arms 83L and 83R on the front side, that is, the transmission arm 83L is extended and contracted by the hydraulic cylinders 82L and 82R. , 83R by moving the front side up and down, and further transmitting arms 83L, 83R.
The gate formwork which is one body by the pivots 84L, 84R
The transmission arms 83L, 83R are rotatably connected to the rear of the movable base 32 via left and right connecting rods 85L, 85R. The upper and lower sides of the universal connecting rods 85L and 85R are connected by a universal joint or the like. Further, as shown in FIG. 10, height adjustment sensors 52A and 53A are provided on the right side of the vehicle body 1 as necessary.

The height adjustment sensors 52, 52A, 53,
Based on 53A, the corresponding hydraulic cylinders 27L, 27L
Since the R, 82L, and 82R expand and contract, the height of the movable base 32 and the front, rear, left, and right inclination directions are adjusted. In this example, particularly, in this example, the pivot axis is longer than the length from the pivots 84L, 84R to the freely connecting rods 85L, 85R. Since the length from 84L, 84R to the hydraulic cylinders 27R, 27L is longer, the amount of expansion and contraction of the hydraulic cylinders 82L, 82R is converted to be small in the free connecting rods 85L, 85R, and the hydraulic cylinders are moved up and down. The amount of movement of the movable base can be finely adjusted using, for example. Further, since the height of the movable base 32 is adjusted at four points, more accurate adjustment is possible.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, the movable base can be provided on the center side of the vehicle body. In addition, the apparatus of the present invention can be used for construction of resin concrete using resin concrete in which resin is filled in concrete as a pavement material, or for using various concrete as a pavement material such as a slurry seal mainly containing asphalt emulsion. Can be. The lifting device is
Not limited to the hydraulic cylinder, various types of devices such as a screw type lifting jack that can raise and lower the movable base can be used. Further, a movable base may be provided integrally with the movable frame, and the movable frame may be suspended from the portal frame on the vehicle body side by a lifting device so as to be able to move up and down and tilt. Further, tires may be provided as running means on the front, rear, left and right sides of the vehicle body. Further, in the third embodiment, the lever type lifting device is connected to the rear side of the movable base. However, the lever type lifting device may be connected to the front side of the movable base, and hydraulic cylinders may be provided on the left and right sides of the rear side. Alternatively, the height of the movable base may be adjusted only by three or four lever-type lifting devices.

[0026]

According to the first aspect of the present invention, there is provided a hopper provided at a front portion of a vehicle body, and a screw spreader for laterally feeding a pavement material put into the hopper from a central portion to both sides of the vehicle body. In a finisher including a screed located behind the screw spreader and vibrated by an exciter, a damper located behind the screed and moving up and down, and a finishing portion provided behind the damper, the finisher includes And a screed, a damper, and a finishing part are provided on a movable base, and the movable base is provided on the vehicle body so as to be able to move up and down and tilt by an elevating device. It is equipped with a height adjustment device that adjusts the height, does not require rails, and can evenly spread, compact and finish paving materials. It is possible to provide a finisher that can.

According to a second aspect of the present invention, a rotary stirrer is provided in front of the screw spreader. No rail is required, and uniform paving material can be uniformly spread, compacted and finished. Finisher can be provided.

[Brief description of the drawings]

FIG. 1 is a side view of a finisher according to a first embodiment of the present invention.

FIG. 2 is an explanatory plan view of a lower portion of the finisher showing the first embodiment of the present invention.

FIG. 3 is a plan sectional view around a movable base showing the first embodiment of the present invention.

FIG. 4 is a longitudinal sectional view around a movable base showing the first embodiment of the present invention.

FIG. 5 is a rear view of the finisher according to the first embodiment of the present invention.

FIG. 6 is a block diagram of a height adjusting device according to the first embodiment of the present invention.

7A and 7B are cross-sectional views illustrating a construction example showing the first embodiment of the present invention. FIG. 7A is an existing pavement, FIG. 7B is after cutting, and FIG. Show later.

FIG. 8 is a sectional view of a finisher according to a second embodiment of the present invention.

FIG. 9 is a side view of a finisher showing a third embodiment of the present invention.

FIG. 10 is an explanatory plan view around a movable base showing a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Tire (running means) 3 Crawler (running means) 4 Hopper 10 Screw spreader 14 Pavement material 27, 28, 29 Hydraulic cylinder (elevating device) 32 Movable base 33 Screed 34 Vibrator 36 Damper 42 Mold plate 59 Height Adjustment device 81L, 81R Lever type lifting device

Claims (2)

[Claims] 1. A hopper provided at a front portion of a vehicle body, a screw spreader for laterally feeding a pavement material put into the hopper from a central portion to both sides of the vehicle body, and a screw spreader positioned behind the screw spreader. In a finisher having a screed vibrated by a vibrator, a damper positioned behind the screed and moving up and down, and a finishing portion provided behind the damper, a traveling means is provided on the vehicle body, A screed, a damper, and a finishing part are provided on a movable base, and the movable base is provided on the vehicle body so as to be able to move up and down and tilt by a lifting device, and a height adjustment is performed by driving the lifting device to adjust the height of the movable base. A finisher comprising a device. 2. The finisher according to claim 1, wherein a rotary stirring device is provided in front of the screw spreader.