JPH0715847Y2 - Front cover mechanism for road scraping device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a front cover mechanism in a road surface scraping and unraveling device which is supported by a traveling means such as a vehicle and reproduces a road surface such as asphalt pavement for other purposes. In particular, the front cover can be opened and closed so that the granular waste material placed on the road surface on the front side in the traveling direction of the apparatus can be smoothly taken into the inside of the apparatus.

[Conventional technology]

As is well known, the road surface scraping device scrapes the road surface with a cutter drum that is installed in the machine frame and is equipped with a cutter bit.In recent years, however, the conveyor frame that conveys scraped scrap material to the machine frame has been used. , The waste material is transferred to the conveyor by the rotating force of the cutter drum, and is discharged toward a truck or the like running in parallel.

In the road surface scraping device, a front cover, a rear cover, and a side cover are arranged between the machine frame and the road surface to prevent the scattering of the waste material to the outside so that the waste material scatters to the outside of the device or is scraped. It is prevented from remaining at the position of. In particular,
Since the device scrapes the road surface while moving, the rear cover slides the scraping plate on the scraping surface to scrape off the scrap so that the scrap does not remain on the spot.

However, although the scraping surface is relatively flat, it does not reach a smooth surface such as a mirror surface, so fine irregularities are formed, and the fine powdery granular waste material in the concave portion is scraped off by the rear cover. Things are difficult and forced to remain on the scraped surface. However, if the powdery and granular waste material remaining on the scraped surface is left as it is, it is not suitable because it prevents the new pavement from adhering to the scraped surface when a new pavement is applied on it. . Therefore, conventionally, after the road surface scraping device, a cleaning vehicle of powdery waste material called a sweeper is run to thereby remove the remaining powdery waste material, and this cleaning vehicle is When the stored waste material is full, the waste material is moved to the front of the road scraping device, the waste material is dumped on the road surface on the front side where the road scraping device advances, and then returned to the subsequent position again.

The dumped powdery waste material enters the device through the gap formed by pushing the front cover (usually made of rubber) as the road scraping device advances, is transferred to the conveyor by the rotation of the cutter drum, and is carried out to the outside. I am doing it.

[Problems to be solved by the device]

However, the front cover of the road scraping device is
Originally, the purpose is to prevent the scattering of waste material from the inside of the device to the outside, so it is not structured to positively take in the powdery and granular waste material that has been dumped and exists on the road surface ahead. Therefore, even if the powdery or granular waste material tries to enter the device by pushing the front cover as the device advances, it may not be able to enter the device due to the resistance due to the rigidity of the front cover. Then, there is a problem that the powdery and granular waste material is flowed to the left and right of the advancing device and remains on the left and right sides of the moving path of the device.

The present invention has been made in view of the above-mentioned problems of the prior art, and when powdery waste material is placed in front of the road scraping device, the waste material is smoothly accommodated in the device. It is an object.

[Means for Solving the Problems]

In this invention, a front cover, which is arranged between the road surface and the front side of the machine frame and prevents scattering of waste materials, is attached to the machine frame so as to be openable and closable, and an opening / closing means for opening and closing the front cover is connected to the front cover. The present invention relates to a front cover mechanism of a road surface loosening device.

[Action]

When the front cover is opened by the opening / closing means, the powdery and granular waste material on the road surface enters the device as it is due to the forward movement of the road surface scraping device. At this time, the waste material scraped by the cutter drum is prevented from scattering to the outside because the powdery waste material is present in the open portion of the front cover. The powdery and granular waste material that has entered the inside of the apparatus is flipped up together with other waste materials by the rotation of the cutter drum and transferred to the conveyor. If there is no dusty material on the road surface, close the front cover,
The scrapped scraps do not scatter to the outside.

〔Example〕

FIG. 1 and subsequent drawings show an embodiment of the present invention, and FIG. 1 shows a longitudinal section taken along line II in FIG. 2 (plan view) of the road surface scraping and unraveling device 1. The road scraping device 1 is
A cutter drum 3 is rotatably supported on the machine frame 2, and a large number of cutter bits 4 are provided on the outer periphery of the cutter drum 3 so that the cutter drum 3 is connected to a rotary drive source (not shown). The cutter bit 4 scrapes the road surface 5 by rotating the cutter drum 3. Machine frame 2
Is suspended up and down by a traveling vehicle by a suspension device 2a such as a hydraulic cylinder and moved along a road surface as described in, for example, Japanese Utility Model Laid-Open No. 60-27112.

Side covers 6 are attached to the left and right sides of the machine frame 2 so as to shield the inside and outside of the road surface 5, respectively, and a front cover 7 is attached to the front side of the machine frame 2 and a scraping plate 8 is attached to the rear side of the machine frame 2 as well. Has been. The scraping plate 8 is made of a metal plate and is attached to the lower end of the rear part of the machine frame 2 via a rear frame 9 and a rear bracket 11.

Further, the front portion of the machine frame 2 has an opening in the widthwise central portion,
The rear end of the conveyor device 12 is connected to this and faces the inside of the road surface scraping device 1. It is assumed that the rear end of the conveyor device 12 is in a position where the scraped-up waste material is transferred inside the machine frame 2, which means that the rear end of the conveyor device 12 is exposed to the inside of the machine frame 2 and therefore The end does not necessarily have to extend into the machine casing 2. The conveyor device 12 is extended forward by a frame (not shown) so that its front end faces above a loading platform such as a dump truck running in front of it.

The road surface disentangling device 1 is well known in the above-described configuration. In such a road surface disentangling device 1, in this embodiment, the front cover 7 is particularly openable and closable.

That is, the upper end of the front cover 7 is fixed to the lower end of the bracket 13 fixed to the lower side of the front part of the machine frame 2 on the left and right of the conveyor device 12 by fixing means such as bolts and nuts.
A fitting 14 is fixed to the lower end of the wire, and the tip of the wire rope 15 is connected to the fitting 14. The middle part of the wire rope 15 is an auxiliary bracket protruding from the bracket 13.
The sheave 17 extends upward through the guide hole of 13a and is rotatably supported by the machine frame 2 via a bracket 16. The rear part of the sheave 17 is horizontal, and the rear end of the sheave 17 is the upper surface of the machine frame 2. It is hooked to the front protrusion 18 of the. A rear protrusion 19 is arranged behind the front protrusion 18.

Since the front cover 7 is made of a rubber plate, it can be bent upward by elastic deformation at the lower side of the attachment portion to the lower end of the bracket 13, and can be opened by pulling the wire rope 15 to the rear end portion. In the closing direction, the pulling force is released, and the front cover 7 and the mounting bracket 14 are closed by their own weight and the elastic restoring force of the front cover 7. The front cover 7 may be made of a hard member such as a metal plate. In that case, the upper end of the front cover 7 may be hinged to the lower end of the bracket 13. Further, the front cover 7 may be mounted so as to be slidable in the vertical direction. The wire rope 15, the sheave 17, and the like in the above-described embodiment form an opening / closing means for the front cover 7. As the opening / closing means, a known mechanical element such as a hydraulic cylinder can be widely adopted as long as it is a mechanism for opening / closing the front cover 7 as described above.

In FIG. 3, the road surface scraping device 1 is suspended by a traveling vehicle 21, and a dump truck 22 for stacking waste material on the road surface scraped by the road surface scraping device 1 is traveling at the same speed. There is. The traveling vehicle 21 is provided with a conveyor device 23 that is continuous with the conveyor device 12, and the loading platform of the dump truck 22 faces the lower end of the conveyor device 23.

A sweeper 24 is running on the rear side of the traveling vehicle 21, and the scraping and unraveling surface 5a is unraveled by the road surface unraveling device 1.
The powdered and granular waste material remaining in the room is cleaned and stored. The sweeper 24 moves to the road surface 5 in front of the traveling vehicle 21 and discards the waste material when the powdery waste material becomes full. 5b is the discarded powdery and granular waste material.

Then, when the traveling vehicle 21 reaches the position of the powdery waste material 5b while the traveling vehicle 21 is advancing in the direction of the arrow F while the road surface 5 is being unraveled by the cutter drum 3 of the road surface unraveling device 1, the worker of the road surface unraveling device 1 Open the front cover 7. At this time, in this embodiment, in addition to pulling the rear end of the wire rope 15,
The rear end may be removed from the front protrusion 18 and engaged with the rear protrusion 19. The front cover 7 is firstly attached by the wire rope 15.
Open as shown by the dashed line in the figure. Therefore, the granular waste material 5b
Enters the inside of the road surface scraping and unraveling device 1, the powder drum waste 5b is flipped up by the rotation of the cutter drum 3 to the conveyor device 12 together with the scraped scrap material, and is dumped through the conveyor device 12 and the conveyor device 23. It is loaded on truck 22.

When there is no powdery or granular waste material 5b on the front side of the road surface scraping device 1, the front cover 7 is closed. At this time, the wire rope
Remove the rear end of the rear projection 15 from the rear projection 19 and hang it on the front projection 18.
This loosens the tension of the wire rope 15 so that the front cover 7
Is restored to the closed position indicated by the solid line in FIG. 1 by its own weight and the weight of the mounting bracket 14.

When the front cover 7 is in the open state, it is in a state of being taken into the inside of the road surface scraping device 5b of the granular material 5b. The scrap material scraped off by is not scattered forward from the open space of the front cover 7.

Next, an example of the arrangement of the wire rope 15 will be described with reference to FIG. 2. Here, the wire rope connected to the left front cover 7 is referred to as 15a, and the wire rope connected to the right front cover 7 is referred to as 15b. Then, if both wire ropes 15a and 15b are branched into two halves and extended to the left and right of the road surface scraping and unraveling device 1, and the front side protrusion 18 and the rear side protrusion 19 are also provided on the left and right sides,
Both wire ropes 15a and 15b can be operated on either the left side or the right side of the machine casing 2. At this time, machine frame 2
The left and right front covers 7 can be selectively opened and closed by selecting and pulling either of the wire ropes 15a and 15b on either of the left and right sides. Incidentally, it goes without saying that the wire rope 15 can be hung in another example.

[Effect of device]

As described above, in the present invention, since the front cover is openable and closable, when the granular waste material is placed in front of the road scraping device, the waste material can be smoothly accommodated in the device. . Therefore, the granular waste material does not remain on the road surface.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is an explanatory view showing a usage state of the embodiment. 1 ... Road surface scraping device, 2 ... Machine frame, 3 ... Cutter drum, 4 ... Cutter bit, 5 ... Road surface, 5a ... Scraping surface, 5b ... Powder waste material, 7 ... Front cover , 12 ...
… Conveyor device, 15 …… Wire rope, 17 …… Sheave,
18,19 …… Protrusion

Claims (1)

[Scope of utility model registration request] 1. A conveyor for rotatably supporting a cutter drum having a cutter bit for scraping roads on its outer periphery on a machine frame, supporting the machine frame on a traveling means, and carrying out scraped waste material. In a road surface scraping device in which the end faces the inside of the machine frame and a front cover that prevents scattering of waste material is arranged between the front side of the machine frame and the road surface, the front cover can be freely opened and closed with respect to the machine frame A front cover mechanism for a road scraping and unraveling device, characterized in that the front cover is connected to an opening and closing means for opening and closing the front cover.