JPS5824966Y2 - Bedding device - Google Patents

Description

[Detailed description of the invention] This invention relates to a leveling device that spreads crushed stones, etc. on a road surface.

As road maintenance projects progress, the field of road maintenance and management has become an important point.

Among these, surface treatment methods and thin-layer pavements are considered low-cost maintenance methods for pavement, but they are not yet definitive methods.

Therefore, the applicant of this invention proposed a new surface treatment method that incorporates the advantages of both the penetration type 1 method and the heated mixing type 1 method, and it has been well received.

This new surface treatment method uses a texture distributor to spread resin-containing asphalt onto the existing pavement surface, and then sprinkles 13 crushed stones on top of it.
After applying pressure 2 to 3 times with a tire roller, spread resin-containing asphalt on top of this with a texture streamer, sprinkle a special mixture on top of it, and immediately apply pressure with a tire roller. It is completed by pressing 3 to 4 times and has the following advantages.

(a) Resin-filled asphalt ages slowly and has extremely good adhesion and adhesion between existing pavement and aggregate.

(b) Because the special material uses a unique bituminous material, it has low temperature sensitivity and does not flash even at high temperatures.
It also does not become dangerous even at low temperatures and has high wear resistance.

(C) The pavement has excellent water resistance and flexibility, and
A strong waterproof layer is formed with a thin layer of approximately 1.5 cm (construction thickness and finished thickness), and cracks are less likely to occur.

(d) Penetration type 1 method, but the finished surface is a surface of a mixture with uniform particle size, and an extremely orthodox pavement can be obtained.

(e) Excellent initial stability, immediate opening, and no peeling or scattering of aggregate.

(f) Construction is simple and low cost.

By the way, when implementing the above new surface treatment method, when scattering crushed stone or a special heated mixture on resin-filled asphalt, it is necessary to run a dump truck directly over the resin-filled asphalt that has been spread on the existing pavement surface. However, the resin-filled asphalt tends to peel off from the road surface due to the tires of dump trucks, which limits the use of resin-filled asphalt, which has strong permeability, and reduces its adhesion to the roadbed before the improvement. There are some drawbacks.

In order to prevent the above, crushed stones and the like are scattered while backing up the dump truck, but the workability is poor and the latter problem of flatness still remains.

This idea was made in view of the above, and it is possible to spread crushed stones and other materials in front of the vehicle while moving it forward, and it is also possible to flatten unevenness such as ruts on the roadbed before improvement. The purpose of the present invention is to provide a leveling device.

This invention will be explained below with reference to the drawings.

Figures 1 to 5 show an embodiment of this invention, in which a vehicle body 1 has a large-diameter, wide-ranging steel wheel 2 in its center, and a rear wheel (right end in Figures 1 and 2). Small-diameter and narrow-width running drive wheels 3 having a steering function are provided with their running surfaces aligned in a straight line in the front and back as shown in FIG. It has a structure in which it rotates and travels on the roadbed 5.

A vertical storage hopper 6 for laying material such as crushed stone is provided at the rear upper part of the vehicle body 1, and a pair of left and right feed conveyors 7.7 extend upward from the front of the vehicle body 1 from the storage hopper 6. It is provided.

The feed conveyor 7.7 conveys the leveling material stored in the storage hopper 6 to the front of the vehicle body 1, and is connected to a hydraulic motor 8 via a clutch 9 and a transmission mechanism 10, respectively, and is operated by the clutch 9. This allows them to be moved individually.

Further, a front hopper 11 is provided at the front of the vehicle body 1.

The front hopper 11 receives the leveling material sent by the feed conveyor 7.7, and is equipped with a screw 14.15 inside which is rotated by a hydraulic motor 12 via a transmission mechanism 13. screw 1
With a rotation of 4.15 degrees, the leveling material can be sent to the sides of the vehicle body 1 and dropped down from the gate 16 at the bottom.

Here, the screws 14 and 15 are formed with opposite spiral directions, and are rotated in the same direction by the hydraulic motor 12 to spread the material in the front hopper 11 into left and right parts as shown by the arrows in FIG. It is configured to be sent to the side of the vehicle body 1.

Further, a support member 17 is provided at the front of the vehicle body 1 so as to protrude forward, and a leveling arm 18 is attached to the support member 17 so that the front end of the support member 17 is attached to the support member 1.
It is pivotally attached to the tip of 7 with a pivot 19 so as to be rotatable up and down.

A free end of the leveling arm 18 extending rearward under the vehicle body 1 is located between the front hopper 11 and the iron ring 2, and a screed 20 is provided thereon.

The screed 20 is used to flatten the leveling material that has fallen onto the roadbed 5 from the gate 16 of the front hopper 11. By operation, the support shaft 21 can be tilted back and forth in a plane perpendicular to the fulcrum.

23 is a driver's seat provided in the vehicle body 1.

The leveling device shown in the figure includes a hydraulic unit 24 operated by a prime mover (not shown), and a hydraulic pump of this hydraulic unit drives each hydraulic motor 4, 8, .
12 etc. are individually rotated, but the hydraulic motor can be replaced with another drive device.

Next, the operation of the leveling device according to the invention constructed as described above will be explained.

During the leveling work, the leveling material is put into the storage hopper 6, and the driver sits in the driver's seat and rotates the travel drive wheels 3 using the hydraulic motor (drive device) 4 to move the car body 1 to the position shown in Figs. While moving the hydraulic motor 8,
12 to operate the feed conveyor 7.7 and screw 14.15.

From this, the leveling material in the storage hopper 6 is carried by the feed conveyor 7.7, enters the front hopper 11, and is moved from the gate 18 to the roadbed 5 while being moved toward the side of the car body 1 by the screws 14.15. fall on top.

The leveling material that has fallen onto the roadbed 5 in this way is
After filling in irregularities such as ruts on the road surface and leveling it with a screed 20 and compacting it, it is rolled with iron wheels 2.

In this case, even if resin-containing asphalt, etc. is applied to the road surface by implementing the new surface treatment method mentioned at the beginning,
Since the traveling drive wheels 3 do not run directly on the resin-filled asphalt, etc., but on a leveling material such as crushed stone laid on top of this, the resin-filled asphalt, etc. The harmful effects of adhesion to the traveling drive wheels 3 are prevented.

If the width of the material to be spread can be reduced to half, one of the clutches 9 is disengaged and only one feed conveyor 7 is operated.

If the type or amount of leveling material changes and the tightening conditions change, the screed 20 is adjusted by operating the adjustment handle 22.

As explained above, the leveling device according to this invention conveys crushed stones and other leveling materials to the front of the vehicle body 1, that is, in front of the iron wheels 2 and the driving wheels 3, by the feed conveyor 7, and deposits them on the roadbed. Since the structure is such that the screed 20 flattens and compacts the asphalt at the same time, the resin-containing asphalt etc. spread on the roadbed 5 adheres to the steel wheels 2 and driving wheels 3 and is peeled off from the roadbed 5. Never.

Therefore, the adhesion of the resin-filled asphalt, etc. to the pre-improved roadbed is not impaired, and the resin-filled asphalt, which has strong permeability, can be used more effectively.

However, since the leveling material is leveled with the screed 20, it is possible to fill in the unevenness such as ruts left on the roadbed before improvement and finish the road surface flatly, and the leveling work can be carried out quickly with good workability. There are also advantages.

In addition, narrow running drive wheels 3 having a steering function are arranged behind the large iron wheels 2 so that the running surface is aligned in a straight line in the front and back. 1 is moved forward and the direction of the vehicle body 1 is changed, so in particular, the peeling off of resin-filled asphalt, etc. by the driving wheels 3, which tend to cause a large peeling effect due to the drive of the vehicle body 1, is prevented. can be more completely prevented.

Furthermore, after the large-diameter iron wheel 2, a small-diameter traveling drive wheel 3 is provided.
A feed conveyor 7 is provided on the car body 1, which is tilted upward in the front in accordance with the arrangement of the large-diameter iron wheels 2 and the small-diameter running drive wheels 3, and a screed 20 is installed below the front part of the car body 1. Since it has a single configuration, it has the advantage of being rational and compact as a whole.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is a plan view of the leveling device according to this invention, Fig. 2 is a side view of the same, and Fig. 3 shows the state in which the iron wheels and running drive wheels are installed. FIG. 4 is a plan view of the feed conveyor, and FIG. 5 is a plan view of the screw. 1...Vehicle body, 3...Traveling drive wheels, 4
...Pa...Hydraulic motor (drive device), 6...
Accommodation hopper, 7...Feed conveyor, 11
...Front hopper, 14...Screw 15...Screw, 16...Gate, 20...Screed.

Claims (1)

[Scope of utility model registration request] A small-diameter, narrow-width traveling drive wheel 3 having a steering function and rotated by a drive device 4 is mounted at the rear, and a large-diameter, wide-width iron wheel 2 is mounted at the rear.
A storage hopper 6 for storing the leveling material is provided at the rear of the vehicle body 1, which is provided with
A pair of feed conveyors 7 for conveying the leveling material stored in the storage hopper 6 to the front of the vehicle body 1 are provided in the storage hopper 6, and a pair of feed conveyors 7 can be operated individually and divided into left and right sides, and are tilted upward in the front. In addition to being provided, the vehicle body 1
A front hopper 11 is provided at the front of the vehicle body 1 to receive the leveling material sent by the feed conveyor 7. A leveling arm 18 is provided which extends rearwardly from the support member 17 at the front of the vehicle body 1 and is rotatable up and down on a pivot shaft 19. At the free end, there is a screed 2 for leveling the leveling material dropped onto the road surface from the gate 16 onto the road surface.
This leveling device is characterized in that the 0 is installed between the front hopper 11 and the iron wheel 2 under the vehicle body 1 so as to be tiltable back and forth by a support shaft 21 and an adjustment handle 22.