JPH05195510A - Method and device for compacting end of pavement material - Google Patents

Abstract

PURPOSE:To eliminate the need for a form to avoid various problems caused by the use of the form and further make it possible to firmly compact the end of pavement material. CONSTITUTION:While an end plate 9 is kept in contact with the base A of a road to restrain pavement material from moving laterally, the pavement material is leveled and compacted by means of a screed 4 for leveling and compaction. Thereafter the end of the compacted pavement material B is compacted by means of a screed 11 for end compaction so that the end of the material B can be firmly formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for compacting an end portion of a pavement made of an asphalt mixture when paving roads, parking lots, tennis courts and the like.

[0002]

2. Description of the Related Art Conventionally, when asphalt paving a road, for example, when there is no structure such as a street beam or a curb at the end, a form made of wood is installed on both sides of the road and In the meantime, an asphalt finisher is used to spread and compact the asphalt mixture.

The asphalt mixture laid and compacted as described above is further compacted by a load roller or the like. The formwork supports the asphalt mixture so that it does not shift to the side of the road during the leveling and compaction operations of the asphalt mixture. This formwork
It is removed after the compaction work is completed.

[0004]

However, in the conventional leveling and compacting work of such an asphalt mixture, a formwork for supporting the asphalt mixture so as not to shift laterally is required as described above. Since this is the configuration, there are the following problems. That is, when using the formwork, a great deal of labor is required for the work of installing and removing the formwork,
In addition, a lot of rake and scoop work is required, which requires a long working time.

In particular, when performing asphalt pavement work on general roads, there are various traffic restrictions, and it is a safety problem to carry out the work of installing / removing formwork, rake and scoop work as described above. There are many. Further, it is necessary to prepare various molds having different thicknesses corresponding to the pavement thickness, which requires time and effort for manufacturing the molds, and there are many types, which makes management thereof complicated.

Further, the formwork is a consumable item, and there is a problem that the wood forming the formwork is greatly lost and resources are wasted. There is also a method of shaping the end of the pavement with a tamper so that the end of the pavement is raised by using a tamper before compacting with rollers without using a formwork. There is a problem that the workmanship is poor.

Further, conventionally, there is known a device in which an inclined plate is attached to the outer end of the screed to finish the end of the asphalt pavement into a triangular cross section (Jikkou 3-27049).
(See the official gazette). However, with this device, the inclined plate is fixed to the screed and the vibration of the screed is used to vibrate the inclined plate, so the end of the pavement can be finished only to the same degree of compaction as the screed. Therefore, the density required for the initial rolling pressure and the secondary rolling pressure by the rollers and the like thereafter cannot be obtained, and lateral rolling occurs in a high temperature state, so that the rolling work cannot be performed well.

Therefore, the present invention has been made in view of the above, and it is possible to eliminate the various problems caused by the use of a mold by eliminating the need for a mold and yet to firmly compact the end portion of the pavement. It is an object of the present invention to provide a pavement end compaction method and a device thereof that can be performed.

[0009]

Therefore, the pavement end compaction method according to the present invention is applied to the pavement while suppressing the lateral movement of the pavement material by bringing the end plate into contact with the lower layer. After paving the material with the compacting screed and compacting it, the end of the compacted pavement is compacted with the end compacting member.

The pavement end compaction device of the present invention is provided with a leveling / compacting screed extending in the vehicle width direction for leveling / compacting the pavement material spread on the lower layer. An end plate on the side of the screed that extends at least rearward from the rear end of the screed, extends in the direction of travel of the screed, and is movably attached toward the lower layer,
While providing a biasing member that biases the end plate toward the lower layer, an end compaction screed that compacts the end of the pavement that is spread and compacted by the screed is provided at the rear of the screed. The structure is arranged close to the end plate.

The end plate may be configured such that a lower end of the end plate is provided with an inclined plate having a predetermined angle for obliquely compacting the end surface of the pavement material laid out on the lower layer. A portion of the end plate extending rearward of the rear end of the screed may be formed by a member separate from the other part, and the separate member may be detachably attached to the end compaction screed.

[0012] Instead of the end compaction screed disposed behind the leveling / compacting screed, in the lateral direction at a position near the end plate near the rear end face of the leveling / compaction screed. A long end compaction bar member may be attached. A portion of the end plate that extends rearward of the rear end of the screed is formed by a separate member that is detachably connected to another portion, and the separate member corresponds to the shape of the side portion of the lower layer. Is a convex member and the outer surface is concavely curved, or a separate member in which a portion of the end plate extending rearward from the rear end of the screed is rotatably connected to another portion in a substantially horizontal plane. And a fixing means for fixing the separate member at an arbitrary rotation position so that the end compacting screed can freely rotate in a substantially horizontal plane following the rotation of the separate member. Can be installed at

[0013]

In the pavement end compaction method and apparatus, the pavement material is spread by the screed while the end plate is brought into contact with the lower layer to prevent the pavement material from moving laterally. After the compaction, the end of the pavement that has been compacted is compacted with the end compaction member, the end compaction screed, or the end compaction bar member, so that the end of the pavement is firm. Formed in.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. 1 to 5, leveling arms 1 are attached to both sides of a rear portion of a main body (not shown) of a self-propelled vehicle so as to freely swing in a substantially vertical plane. A frame 2 is attached to the rear end of the leveling arm 1 so as to extend between the leveling arms 1.

A pair of support members 3, which are free to move in the vehicle width direction, are attached to the lower portion of the frame 2 at two positions displaced in the vehicle longitudinal direction. A screed 4 for leveling and compaction for compacting the asphalt mixture is swingably attached to the lower portion of each support member 3. The average floor
The compacting screed 4 is adapted to be vibrated by a vibrating device (not shown).

A pair of guide members 5, which are free to move in the vehicle width direction, are attached to the frame 2 at two positions displaced in the vehicle front-rear direction, like the support member 3. Plates 6 are attached to both sides of the support member 3 and the guide member 5, respectively. Each of the leveling / compacting screeds 4 can be moved to the outside of the frame 2 together with the supporting member 3 and the guide member 5 by a hydraulic cylinder (not shown) so that the compacting width can be increased. It can be adjusted.

3 to 5, end plate supports 7 are attached to the outer side of each plate 6 by bolts 8, and each end plate support 7 extends in the front of the vehicle. Between the plate 6 and the end plate support 7, an end plate 9 is movably downward and is vertically erected and sandwiched, and a lower end portion of the end plate 9 is bent at a substantially right angle. .. A plate-shaped locking portion 10 is attached to the front end portion of the end plate 9, and the locking portion 10 is engaged with the front end portion of the end plate support 7 to move the end plate 9 rearward of the vehicle. Regulate. The rear end portion of the end plate 9 extends rearward of the vehicle from the screed 4 for spreading and compacting.

As shown in FIG. 3, the end plate 9 is biased toward the roadbed A as a lower layer by the elastic force of the spring 13 as a biasing member. At the rear of the leveling / compacting screed 4, an end compaction screed 11 for compacting the end of the pavement leveled / compacted by the screed 4 approaches the end plate 9 and is substantially It is mounted to swing freely in a vertical plane. An electric vibrator 12 is mounted on the end compaction screed 11 to apply vibration to the screed 11. The vibrator for the end compaction screed 11 is not limited to this, and a hydraulic or high frequency vibrator may be applied.

Although not shown, a screw conveyor spreader for distributing the asphalt mixture to the left and right is provided in front of the leveling / compacting screed 4 extending in the vehicle width direction. Further, a hopper for storing the asphalt mixture is provided in the vehicle body, and the asphalt mixture is sprayed from the hopper to the front of the spreader via a conveyor.

Next, an end compaction method using the pavement end compaction device having such a construction will be described. First, the leveling / compacting screed 4 is projected laterally from the frame 2 in accordance with the construction width, and then the end plate 9 is brought into contact with the roadbed A as a lower layer by the elastic force of the spring 13, and The leveling / compacting screed 4 and the end compaction screed 11 are brought into contact with the base set on A with the same thickness as the leveling thickness of the asphalt mixture.
In addition, the asphalt mixture is supplied to the hopper from the carrier.

The conveyed asphalt mixture is spread and compacted by the screed 4 for leveling and compacting, and the end of the pavement B made of the asphalt mixture spread and compacted by the screed 4 is finished. The screed 11 for compaction is used for compaction. At this time, the end plate 9
This prevents the asphalt mixture from escaping outwards.

That is, the asphalt mixture at the end of the pavement B is compacted by the leveling / compaction screed 4 and the end compaction screed 11 while the escape of the asphalt to the outside is suppressed by the end plate 9. So pavement B
Is formed by being erected at a substantially right angle as shown in FIG. As a result, the end of the pavement B is formed to be erected at a substantially right angle so that the conventional formwork becomes unnecessary, the work of installing and removing the formwork becomes unnecessary, and most of the rake and scoop work is performed. It can be omitted, work time is not required, and work efficiency can be improved.

In particular, when performing asphalt pavement work on general roads, there are various traffic restrictions, and it is a safety problem to carry out conventional formwork installation / removal work, rake and scoop work among them. However, the work of installing and removing the formwork is unnecessary, and most of the rake and scoop work can be omitted, resulting in a significant increase in work safety.

Further, it is not necessary to prepare various molds having different thicknesses corresponding to the pavement thickness, labor and management for manufacturing the molds are unnecessary, and waste of wood resources can be suppressed. Further, the finish of the end portion of the pavement B can be improved. Further, after the end portion of the pavement B is compacted by the leveling and compacting screed 4, the end compaction screed 11 is further compacted, so that the compaction strength of the end portion of the pavement B is centered. It is possible to obtain a density required for the initial rolling pressure and the secondary rolling pressure by rollers etc. after that, and it is possible to prevent lateral slippage in a high temperature state. You can do it.

As shown in FIGS. 6 and 7, an extension screed 21 is attached to the outer side of the spread / compacting screed 4, an end plate 9 is attached to the outer side of the extension screed 21, and the extension is further extended. The end compaction screed 11 may be attached to the end of the end plate 9 behind the screed 21.

In addition, the roadbed A with the end plate as the lower layer
8 and 9, the end plate 9 may be urged toward the roadbed A by a hydraulic cylinder 31 as the urging member for urging toward the road base A, as shown in FIGS.
As shown in FIG. 1, the end plate 9 may be biased toward the roadbed A by the torsion coil spring 41.

The end plate 9 may be provided only on one side of the vehicle. Next, still another embodiment of the present invention will be described with reference to FIGS. 12 and 13
In the embodiment shown in Fig. 6, the end plate 9 is provided with a slanting plate 9B at a lower end portion thereof, which has a predetermined angle for compacting the end surface of the pavement material laid out on the roadbed A obliquely. ..

That is, the end plate 9 is divided into an end plate main portion 9A and an inclined plate 9B forming the lower end portion. A flange portion 9a protruding outward is formed at a lower end portion of the end plate main portion 9A. Inclined plate 9
B is formed of a horizontal portion 9b and an inclined portion 9c. The end plate main portion 9A and the inclined plate 9B are fixed by fastening the flange portion 9a and the horizontal portion 9b with fasteners such as bolts and nuts 20.

Regarding the inclination angle of the inclined portion 9c of the inclined plate 9B, the angle α between the inclined portion 9c and the roadbed A is 10 to 90.
A plurality of inclined plates 9B that are set to have different degrees and have different angles are prepared. One of the plurality of prepared inclined plates 9B is selected according to the type of pavement material, application, etc.,
It is fixed to the end plate main body 9A as described above.

For example, when the end portion of the pavement B is rubbed, the angle is reduced. When the pavement B is thin, the angle is set to about 60 degrees. According to this structure, the angle of the end portion of the pavement B is set to 10 to 9 depending on the type of the inclined plate 9B.
The angle can be set up to 0 degrees, and the optimum angle can be set according to the type of pavement material, the application, and the like.

As a result, the end portion of the pavement B will not be broken during the compaction by the roller or the like after compaction, and the finish of the end portion of the pavement B can be improved. The end plate main body 9A and the inclined plate 9B may be rotatably hinged to each other, and the end plate main body 9A and the inclined plate 9B may be fixed at a predetermined rotational position.

When the angle of the end of the pavement B is set small, the screed 11 for compacting the end by the vibrator 12 is used.
It is desirable to attach a similar vibrator to the end plate main body portion 9A or the inclined plate 9B because the effect of downward vibration of the plate is reduced. In the embodiment of FIGS. 14 and 15, the portion of the end plate 9 extending rearward from the rear end portion of the screed 4 for compacting and compacting is formed by a member separate from other portions, and the separate member is formed. Is detachably attached to the end compaction screed 11.

That is, the end plate 9 is composed of an end plate main portion 9C and a rectangular division plate 9D forming a rear end portion.
It is divided into two parts. The dividing plate 9D is fixedly attached to the side surface of the end compacting screed 11 with bolts 22.
Further, a small piece 23 is projected and fixed to the front end portion of the dividing plate 9D by welding or the like, and the small piece 23 is superposed on the lower portion of the outer surface of the end plate main body portion 9C to prevent lateral deviation of the dividing plate 9D. I am trying.

In this structure, the dividing plate 9D operates integrally with the end compacting screed 11 and vibrates to compact the pavement B together with the end compacting screed 11.
As the dividing plate 9D, those having various changes in the dimension in the height direction are prepared, and according to the thickness of the paving body B, the dividing body 9D to be used is exchanged. In the embodiment of FIGS. 16 and 17, instead of the end compaction screed 11 arranged at the rear of the scatter / compaction screed 4, the screed 4 for compaction / compaction is in the vicinity of the rear end face. A laterally long end compaction bar member is attached at a position close to the end plate 9.

That is, the tamper bar 24 is provided as the end compaction bar member. This tamper bar 24 is formed in a rectangular shape. The inner surface of the rear end of the end plate 9,
A pair of pressing plates 26 protruding inward and facing each other are fixedly attached to the supporting member 25 fixed to the rear end surface of the screed 11 for spreading and compacting, and the tamper bar 24 is provided inside the pair of pressing plates 26. The left and right ends of the are inserted and arranged. A bracket 27 is attached to the upper end of the tamper bar 24, and the lower end of a connecting rod 28 is rotatably connected to the bracket 27. The upper end portion of the connecting rod 28 is rotated by an eccentric shaft portion 30A of a crank shaft 30 whose both end shaft portions are rotatably supported by a bearing member 29 fixedly attached to the rear end surface of the screed 4 for leveling and compaction. Freely linked.

Therefore, by rotating the crankshaft 30 by the hydraulic motor 32 or the like, the eccentric shaft portion 30A is formed.
The tamper bar 24 is moved up and down through the tamper bar 24 which is moved up and down, and the pavement body B which is spread and compacted by the screed 4 for leveling and compaction is further compacted. As the end compaction bar member, a pressure bar may be provided instead of the tamper bar 24. The pressure bar is pressed and urged against the pavement B by the spring, and high vibration is applied by the vibrator. Therefore, the pavement body B, which is spread and compacted by the screed 4 for flattening and compacting by the pressure bar, is compacted by its vibration while being pressed.

The embodiment shown in FIGS. 18 and 19 is a separate body in which a portion of the end plate 9 extending rearward from the rear end portion of the screed 4 for leveling and compaction is detachably connected to another portion. It is formed by a member, and the separate member is formed in a shape in which the inner surface is convex and the outer surface is concave, corresponding to the curved shape of the side portion of the roadbed A. That is, the end plate 9
Is formed of an end plate main portion 9E and a rectangular plate 9F that forms a rear end portion and has a rectangular shape in which the inner surface is convex and the outer surface is concave. Flange portions 9d and 9e are formed at the rear end portion of the end plate main body portion 9E and the front end portion of the curved plate 9F, respectively.
The end plate main body 9E and the curved plate 9F are fixed by fastening the d and 9e together via fasteners such as bolts and nuts 33.

A plurality of types of the curved plate 9F are prepared in which the degree of curvature is appropriately changed according to the curved shape of the side portion of the roadbed B, for example, the curved shape along the circular shape having the radius R in FIG. Then, it is exchanged and used according to the side shape of the roadbed A. The side surface of the end compaction screed 11 on the curved plate 9F side is extended to a position close to the inner surface of the curved plate 9F.

In the embodiment shown in FIG. 20, the end plate 9 is used.
Fixing means for fixing a portion of the screed extending rearward of the rear end of the screed to another portion by a separate member rotatably connected in a substantially horizontal plane and fixing the separate member at an arbitrary rotation position. And the end compaction screed 11 is disposed so as to follow the rotationally fixed position of the separate member so as to rotate in a substantially horizontal plane and be fixed freely at an arbitrary rotational position. .

That is, the end plate 9 is divided into an end plate main portion 9E and a rectangular flat plate 9G forming the rear end portion. The rear end of the end plate main body 9E and the front end of the flat plate 9G are rotatably connected via a hinge 34 or the like. The hinge 34 is provided with a turning device (not shown) for turning the flat plate 9G. The flat plate 9G is moved in accordance with the curved shape of the side portion of the roadbed A, for example, at an angular position β in the drawing. It is configured to rotate up to.

Further, the end compaction screed 11 is connected to the spread / compacting screed 4 by the bracket 3.
The length of the flat plate 9G is adjustable and fixed at an arbitrary length position so that the flat plate 9G follows the rotation fixed position of the flat plate 9G.
The flat plate 9 is inclined with respect to the screed 4 for spreading and compacting.
The position is changed to be close to the inner surface of G. According to this structure, the following actions and effects are achieved.

That is, the rear end portion of the end plate 9 is spread and
It extends rearward of the rear end of the compacting screed 4 and, as a result, the total length of the end plate 9 is considerably long. Therefore, on a curved road or the like, the finish of the roadbed A in the tangential direction at the curved portion is not good.

Therefore, in the above embodiment, the curved plate 9F is provided as in the embodiment of FIGS. 18 and 19, or the flat plate 9G extending obliquely is provided as in the embodiment of FIG. By making 9F and the flat plate 9G correspond to the curved shape of the side portion of the roadbed A, the roadbed A can be finished well in the tangential direction at a curved portion such as a curved road. Although the present invention has been described with reference to the specific embodiments, the present invention is not limited thereto, and a person skilled in the art can deviate from the scope of the claims attached to the present invention. It should be noted that various changes and modifications can be made without doing so.

[0044]

As described above, according to the present invention, the paving material is spread and compacted by the screed while the end plate is brought into contact with the lower layer to prevent the paving material from moving laterally. After that, the end of the compacted pavement is compacted by the end compaction member, and as a device to achieve this method, a screed that spreads and compacts the pavement material spread on the lower layer. Since an end plate is provided on the side and an end compaction screed different from the screed is arranged close to the end plate at the rear of the screed, the form is unnecessary and the form is used. It is possible to eliminate various problems due to, and moreover, the pavement end can be firmly compacted,
There are advantages that the work efficiency can be improved, the compaction performance can be improved, and the work safety can be improved, and the subsequent compacting work can be performed well.

If the end plate is provided with a slanting plate at a predetermined angle for compacting the end surface of the pavement material unwound on the lower layer diagonally at the lower end thereof, the angle of the pavement end can be adjusted. It can be set to a predetermined angle according to the type of inclined plate, and it can be set to the optimum angle according to the type of pavement material, application, etc. The end of the body does not collapse, and the performance of the end of the pavement can be improved.

Further, a portion of the end plate extending rearward from the rear end of the screed is formed by a member separate from the other part, and the separate member is detachably attached to the end compacting screed. In this case, the separate member operates integrally with the end compacting screed to vibrate, and compacts the pavement together with the end compacting screed. In addition,
Instead of the end compacting screed arranged behind the compacting screed, an end compacting bar that is laterally long at a position near the end plate near the rear end face of the leveling / compacting screed. You may make it attach a member.

Further, the portion of the end plate extending rearward from the rear end of the screed is formed by a separate member which is detachably connected to another portion, and the separate member is curved on a side portion of the roadbed. According to the above shape, the inner surface is formed in a convex shape and the outer surface is formed in a concave shape, or a fixing means for fixing the separate member at an arbitrary rotation position is provided, and the end compaction screed is provided. By arranging so as to follow the rotation fixing position of the separate member so that it can rotate in a substantially horizontal plane and can be fixed freely at an arbitrary rotation position, the finish of the roadbed in the tangential direction at a curved portion such as a curved road Will be good.

[Brief description of drawings]

FIG. 1 is a rear view showing an embodiment of a pavement end compaction device according to the present invention.

FIG. 2 is a plan view of the above embodiment.

FIG. 3 is a side view of the above embodiment.

FIG. 4 is a plan view of a main part of the above embodiment

FIG. 5 is a rear view of the main part of the above embodiment.

FIG. 6 is a rear view of another embodiment.

FIG. 7 is a plan view of another embodiment of the above.

FIG. 8 is a side view of a modification of the above embodiment.

FIG. 9 is a sectional view of an essential part of a modification example of the above.

FIG. 10 is a side view of still another modified example.

FIG. 11 is a sectional view of a main part of still another modified example of the same.

FIG. 12 is a side view of a main part of still another embodiment.

FIG. 13 is a rear view of the main part of still another embodiment of the same.

FIG. 14 is a side view of a main part of still another embodiment.

FIG. 15 is a plan view of a main part of still another embodiment of the same.

FIG. 16 is a side view of a main part of still another embodiment.

FIG. 17 is a plan view of an essential part of still another embodiment of the same.

FIG. 18 is a side view of a main part of still another embodiment.

FIG. 19 is a plan view of a main part of still another embodiment of the same.

FIG. 20 is a plan view of an essential part of still another embodiment.

[Explanation of symbols]

 4 Screed for leveling and compaction 9 End plate 11 Screed for end compaction 12 Vibrator 13 Spring

Claims (7)

[Claims] 1. A pavement material is leveled and compacted by a leveling / compaction screed while the end plate is brought into contact with a lower layer to prevent the pavement material from moving laterally. A method for compacting an end portion of a pavement, which comprises compacting an end portion of the pavement body that has been solidified with an end compaction member. 2. A pavement material spread on the lower layer is spread and leveled.
A screed for leveling and compaction for compaction is provided extending in the vehicle width direction, and an end plate is provided on the side portion of the screed so as to extend at least rearward from the rear end of the screed and extend in the advancing direction of the screed. While being movably attached to the lower layer, a biasing member that biases the end plate toward the lower layer is provided, and at the rear of the screed, an end portion of the pavement that is spread and compacted by the screed is provided. An end compaction device for a pavement, wherein an end compaction screed for compaction is arranged close to the end plate. 3. The end plate has a structure in which a lower end of the end plate is detachably provided with an inclined plate having a predetermined angle for obliquely compacting the end surface of the pavement material laid out on the lower layer.
An end compaction device for the pavement described. 4. A portion of the end plate extending rearward from the rear end of the screed is formed by a member separate from the other part, and the separate member is detachably attached to the end compacting screed. The end compaction device for a pavement according to claim 2 or 3. 5. Instead of the end compaction screed arranged behind the leveling / compacting screed, a horizontal line is provided at a position close to the rear end face of the leveling / compacting screed and close to the end plate. The end compaction device for a pavement according to any one of claims 2 to 4, wherein an end compaction bar member that is long in a direction is attached. 6. A portion of the end plate that extends rearward of the rear end of the screed is formed by a separate member that is detachably connected to another portion, and the separate member is formed in a side shape of a lower layer. Correspondingly, the pavement end compaction device according to any one of claims 2 to 5, wherein the inner surface is convex and the outer surface is concave. 7. A portion of the end plate extending rearward from the rear end portion of the screed is formed as a separate member which is rotatably connected to another portion in a substantially horizontal plane, and the separate member is optional. Fixing means for fixing at the rotating position is provided, so that the end compacting screed follows the rotating fixing position of the separate member so as to rotate in a substantially horizontal plane and be freely fixed at an arbitrary rotating position. The end compaction device for a pavement according to any one of claims 2 to 5, which is provided.