JPS586882Y2 - Leveling device - Google Patents

Description

[Detailed description of the invention] The present invention has a cross-contact cutting device and a compaction device installed at the rear of the cross-contact spreading device, and removes the coarse particles in the cross-contact spread to a predetermined thickness on the surface to be paved. A separation device having a plurality of sieve blades radially formed on a rotating shaft for separating fine grain material in the upper layer into the lower layer is formed between the mixed material cutting device and the compaction device, and the tips of the sieve blades are connected to the paved surface. This is a leveling device that is placed close to the surface, and is applied to leveling asphalt mix or ready-mixed concrete, which is a mixed material applied to asphalt finishers and concrete finishers, and mainly consists of fine-grained materials. After spreading the asphalt mixture or ready-mixed concrete to a predetermined thickness on the surface to be paved using a mixed material spreading device, the coarse particles in the asphalt mixture or ready-mixed concrete are separated and laminated on the pavement surface, and the separating device In addition to preventing clogging between the plurality of sieve blades, it is possible to break down accumulated lumps and pave a homogeneous anti-slip pavement in one step.

Conventionally available asphalt mix leveling equipment uses mesh plates to separate the asphalt mix according to particle size, so the mesh is clogged or the aggregates that have gathered cannot be broken down. However, there was a drawback that the desired pavement could not be obtained because it could not be separated.
As a result of various experimental studies, the present inventor has developed the present invention which does not have these drawbacks.

A specific example of the application of the present invention to an asphalt finisher will be explained below with reference to FIGS. 1, 2, 3, and 4. An asphalt finisher main body 1 runs on an endless track 2, The asphalt mixture charged into the mixed material receiving hopper 3 of the section is fed rearward by a bar conveyor-type mixed material feeder 4 provided at the bottom of the mixing material receiving hopper 3, and is further installed laterally at the rear of the asphalt finisher main body 1, and as appropriate. A kneaded material spreading device 5 such as a screw spreader rotated by a drive mechanism spreads the mixed material to a predetermined width to the left and right of the front of the device 6, and a plurality of sieve blades 71 provided in the device 6 The asphalt mixture is spread over the entire width by a rotary separator 7 having a radial structure, and the coarse-grained material is separated into an upper layer and the fine-grained material is separated into a lower layer. The sieve blades 71 are preferably made of elastic material such as piano wire.

The mixed material leveling device 6 is the asphalt finisher main body 1
The main body blocks 8, 8' have the same width and are bendable at the center.
and a plurality of widening blocks 9, 9' connected to the left and right sides of the arm 11, which is pivoted to the side surface of the endless track by a pin 10.
The device 6 is connected by a pin 12 and a paving thickness adjusting handle shaft 13 to the kneading material mating device 6 by rotating the handle shaft 13.
By enlarging the distance between the rear end and the rear end of the arm 11, the front part of the kneading material covering device 6 is rotated while being pulled up by the mounting pin 12 attached to the arm 11, and the asphalt finisher is tilted upward. As the main body 1 moves forward,
A buoyant force is generated between the spread asphalt mixture and the mixed material leveling device 6 floats, and this buoyant force and its own weight are balanced, resulting in a stable pavement of the desired thickness.

Left and right main body blocks 8.8' of the mixed material leveling device 6
Usually two vertical adjustment devices 14, 14' installed at the front of the
A mixed material stopping plate 16 having a mixed material cutting device 15 at the tip thereof is attached via the kneaded material spreading device 5, and the asphalt mixture is moved forward while discharging a fixed amount of the asphalt mixture spread over a wide area by the mixed material spreading device 5.

A plurality of radial sieve blades 71 of the rotary separation device 7 located after the kneaded material cutting device 15 are divided into two left and right parts at the center of the main body block 8, and the lower end is divided into two parts in the paving thickness so as to be in contact with the surface to be paved. The height is automatically adjusted accordingly, and the tamper 17 vibrates in conjunction with the vertical movement of the tamper 17, thereby improving the separation effect of the asphalt mixture.

The separating device 7 is supported by a connecting fitting 20 on a support rod 19 integrated with a plurality of support links 18, and has a plurality of sieve blades 71 having gaps that allow fine particles in the asphalt mixture to pass through but do not allow coarse particles to pass through. are formed radially on a rotating shaft 74 that is rotated by an appropriate rotational drive device, and the front part of the support link 18 is formed with a pin 21 . It is connected by a rod 22 to a lever 23 that swings in accordance with the pavement thickness setting value, and the other end of the lever 23 is connected to a pin 24 near the pavement thickness adjustment handle shaft 13 of the arm 11 via a connecting rod 25. Lever 23
The upper part of the main body block 8 is attached to provide a proportional length so that the tips of the sieve blades 71 of the separation device 7 are always close to the surface to be paved in accordance with the pavement thickness setting amount of the pavement thickness adjustment handle shaft 13 at the middle part. It is supported by a shaft 27 on a stand 26 .

The rod 22 is supported between the levers 23 via a spring 28, and can only be slid upwardly between the levers 23 if the separating device 7 needs to be raised abnormally.

In addition, a plurality of joint pin holes 29 are provided at the joint between the arm 11 and the connecting rod 25 at the rear end of the lever 23 to prevent changes in the ratio between the paving setting thickness and the finished thickness due to changes in the properties of the asphalt mixture. This is something that can be accommodated.

The rear end of the support link 18 is connected by a pin 30 to a tamper frame 31 on which the tamper 17 is attached, and the tamper frame 31
is vertically vibrated by a shaft 34 rotated by a hydraulic motor 32 via a transmission belt 33 and an eccentric bearing 35, and the separating device 7
This oscillates around the pin 21 to improve the separation effect of the sieve blades 71.

The kneaded material stopping plate 16 lightly contacts the tip of the support link 18 of the separating device 7 by means of the rod 36 and springs 37 and 37'.
The separator 7 and the width expanding block 9 are vibrated by the swinging motion of the separator 7 to prevent asphalt mixture from adhering and to improve the cutting of the asphalt mixture.
The separating devices 7, 7' of 9' are connected by suitable joining means so that the separating devices of each block can operate together.

This invention mixes hard coarse grain material with anti-slip effect,
After the asphalt mixture mainly consisting of fine particles is spread by the kneaded material spreading device 5, coarse particles having an anti-slip effect can be separated and paved on the pavement surface. Since this is done after the cutting device 15 has leveled the pavement to a specified thickness, the width of the pavement can be changed, and the sieve blades 71 of the separation device 7 can always keep their tips close to the surface to be paved, regardless of changes in the thickness of the pavement. Because they are in close proximity, it is possible to break down the aggregated lumps and effectively separate the asphalt mixture, regardless of the thickness of the pavement.

In the present invention, a kneaded material cutting device 15 and a compacting device 61 are installed at the rear of the kneaded material spreading device 5, and the coarse particles in the mixed material spread to a predetermined thickness on the surface to be paved are transferred to fine particles in the upper layer. A separation device 7 having a plurality of sieve blades 71 formed radially on a rotating shaft 74 for separating the material into lower layers is installed between the kneaded material cutting device 15 and the compaction device 61, and the tips of the sieve blades 71 This is a leveling device that is made up of a kneaded material cutting device 15 that separates the coarse grain material in the mixed material spread to a predetermined thickness on the paved surface into an upper layer and the fine grain material into a lower layer. Furthermore, the sieve blades 71 can be used to break down lumps that have gathered in the mixed material and to make the pavement surface smooth after compaction without causing any unevenness. When rotating in the direction of mark A to pick up the mixed material, even if the aggregate in the mixed material may be pinched between adjacent sieve blades 71, it will not be pushed out when the sieve blades 71 enter the mixed material. It has a good separation effect over a long period of time without causing clogging.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a plan view, Fig. 2 is a side view, Fig. 3 is a side view of the main part, and Fig. 4 is a plan view of the main part. 5... Kneaded material spreading device, 7... Separation device, 15... Kneaded material cutting device, 61...
... compaction device, 71... sieve blades, 74...
····Axis of rotation.

Claims (1)

[Scope of utility model registration request] A kneaded material cutting device 15 and a compaction device 61 are formed at the rear of the mixed material spreading device 5, and the coarse grain material in the mixed material spread to a predetermined thickness on the surface to be paved is placed in the upper layer and the fine grain material is placed in the lower layer. A separating device 7 in which a plurality of sieve blades 71 to be separated are formed radially on a rotating shaft 74 is connected to the kneaded material cutting device 15 and the compacting device 61.
A leveling device is formed between the sieve blades 71 and the tips of the sieve blades 71 are brought close to the surface to be paved.