JPH0538091Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to a screed adapter that can narrow the paving width of the screed of an asphalt finisher and pave narrow grooves.

[Conventional technology]

For example, if an asphalt road in a snowy country is damaged by tire chains or spiked tire ruts, the damaged road is usually 1m wide.
The damage is removed from the road by cutting a narrow groove with a groove height of 10 cm, which is then paved in multiple layers (usually two layers). Here, asphalt finishers are used for paving roads, etc., but since the paving width of the screed provided on the asphalt finishers exceeds the above-mentioned groove width, the asphalt finishers alone cannot handle the narrow widths mentioned above. It was not possible to pave the grooves in multiple layers, and the first layer had to be paved manually. As shown in FIGS. 7 and 8, the asphalt finisher 30 sends the asphalt mixture supplied into the hopper 35 by a dump truck or the like to the rear using the bar conveyor device 34, and sets it in front of the screed 15. Screw Conveyor 3
3, the front surface of the screed 15 is expanded to the left and right. The expanded asphalt mixture is spread to a predetermined paving width and paving thickness by the bottom surface (paving surface) of the screed 15, which is adjusted in the height direction by the thickness handle 31 and side arm 32. However, as described above, the width of the screed 15 is set in consideration of versatility so that wide paved surfaces can be efficiently paved, and it is not compatible with narrow grooves as described above. Therefore, as mentioned above, in conventional road work, the first layer in the groove is finished manually, and then the second layer is finished using an asphalt finisher using normal paving work. That is the reality.

[Problem that the invention attempts to solve]

This idea was devised as a result of intensive research in view of the above circumstances, and its main objective was to provide a screed adapter that allows an asphalt finisher to pave grooves that are narrower than the paving surface of the screed. There is something to do.

[Means to solve the problem]

In order to solve the above problems, this invention (a) has a bottom surface set to a paving width narrower than the paving width of the screed provided on the asphalt finisher, and is set at a predetermined height; , a screed adapter is provided; (b) the front end of the screed adapter is latched to the forming edge side of the screed, and the rear end is removably connected to the screed via a connecting means; ing.

[Effect]

The screed adapter is latched at its front end to a forming edge of the screed and its rear end is removably attached to the screed by means of a coupling means. The screed adapter attached to this screed has a width narrower than the paving width of the screed and is set at a predetermined height, so even if the groove is narrower than the paving width of the screed, the screed adapter can be attached to the groove. It can be inserted into the pavement and paved. Therefore, since the asphalt finish can be paved in two ways, with and without the screed adapter attached, even narrow grooves can be paved in multiple layers.

【Example】

Preferred embodiments of the screed adapter of this invention will be described below with reference to the drawings. Here, since the screed 15 to the asphalt finisher 30 to which the screed adapter is attached are used in the conventional configuration shown in FIGS. 7 and 8, the description thereof will be omitted. In addition, when the screed is composed of a combination of an extensible screed that expands and contracts in the left-right width direction and a main body screed fixed at the center, it is preferable that the screed adapter is attached to the main body screed. The screed adapter 1 shown in FIG. 1 consists of an adapter body 2 having a latching piece 4 at its tip, and a connecting rod 10 that connects the adapter body 2 to a screed 15 in a detachable manner. That is, the adapter main body 2 has a substantially cubic structural steel 5 fixed integrally to the upper surface of a steel plate having the same width with its tip bent upward. The bottom surface of this adapter main body 2 is a paving surface, and the main part is a horizontal surface, and the tip side is gradually inclined upward so that it is parallel to the bottom surface of the screed 15, which is the paving surface. The illustrated example has a configuration in which the hooking piece 4 is bent upward through the inclined surface 5A, and the surface side of the hooking piece 4 is formed into a curved surface 3 corresponding to the curved surface 15A of the forming edge of the screed 15. ing. Therefore, even if the asphalt mixture conveyed from the hopper 35 of the asphalt finisher 30 shown in FIG. Paved surfaces such as roads can be efficiently finished by pressing with the curved surface 3 and pressing with the inclined surface 5A. A pair of left and right brackets 7 are provided protruding from the rear end of the screed adapter 1, as shown in FIG. The base end of a rod-shaped connecting rod 10 is pivotally attached to the bracket 7 with a pin 8, and a screw is cut into the tip of this connecting rod 10. Next, as shown in FIG. 4, a mounting piece 13 having a slit 13A into which the tip of the connecting rod 10 is fitted is attached to the fender 14 integrally projecting from the rear of the screed 15. There are two pairs on the left and right corresponding to the A channel material is integrally fixed to the mounting piece 13 in an inverted manner inside the fender 14, and is disposed so as to cover the upper part of the connecting rod 10 (see FIG. 3). Since the screed adapter 1 has the above-mentioned structure, the hooking piece 4 at the tip is hooked to the forming edge 15A of the screed 15, and the adapter body 2
along the bottom surface of the screed 15. Then, the connecting rod 10 is extended rearward, and the slit 1 of the mounting piece 13 provided on the fender 14 is opened.
3A from below, and tighten the nut 11 to the externally protruding tip. As a result, asphalt finisher 30
As shown in FIG. 5, by attaching the screed adapter 1, it is possible to form a paving surface on the screed 15 that is substantially the same as the paving surface, has a narrow width, and has a predetermined thickness. . Next, the screed adapter 1 shown in FIG.
shows a different embodiment in the case of paving a narrow groove with a deep groove height. This screed adapter 1 has a configuration in which a cubic spacer 6 having an appropriate height is attached to the top surface of the adapter body 2, so that the height from the bottom surface of the screed to the bottom surface of the adapter body 2 can be set high. Therefore, even if the groove height is deep, it can be inserted into the groove and paved. This spacer 6 may be a block or a frame of uniform height. When the spacer 6 is installed, it forms an upper surface parallel to the upper surface of the adapter body 2 (structural steel 5 in the illustrated example), and is installed by simply placing it on the adapter body 2 and pressing it between it and the screed 15. However, a known engaging means may be provided at the abutting portion of the spacer 6 and the adapter body 2 so that the spacer 6 and the adapter body 2 can be detachably engaged. In this way, when paving a narrow groove 20 as shown in FIG.
Attach the screed adapter 1 to the groove 20
The groove 20 can be paved in two layers by paving the first layer 21 of the groove, then removing the screed adapter 1 and paving the second layer of the groove 20. Further, by providing the space 6 of an appropriate height as described above, a deep groove can be paved in two or more layers. In addition, in this example, a screwing structure using a connecting rod is shown as a means for connecting the adapter body, and the nut can be tightened on the outside of the vehicle body, making attachment and detachment work easier. The connection structure may be engaged by a hook, tightened by a wire or the like, or any other suitable structure may be used.

[Effect of the idea]

Since this invention has the above structure, narrow grooves that could not be paved with conventional asphalt finishing screeds can be paved in multiple layers by attaching and detaching the screed adapter, improving the efficiency of paving work. Cost reduction can be achieved significantly. In addition, the front end is engaged with the forming edge of the screed, and only the rear end is connected via the connecting means, so if the connecting means on the rear end side is removed from the screed side and the asphalt finisher is moved backward, the screed will be connected. The adapter can be easily removed.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a preferred embodiment of the screed adapter of this invention, and FIG. 2 is an explanatory diagram of paving a narrow groove using the screed adapter.
Figure 3 is a side view showing the screed adapter installed, Figure 4 is a rear view of the same, Figure 5 is a side view of the asphalt finisher with the screed adapter installed, and Figure 6 is a spacer attached to the screed adapter. FIG. 7 is a side view showing a conventional asphalt finisher, and FIG. 8 is a plan view thereof. 1...Screed adapter, 2...Adapter body, 4...Latching part, 6...Spacer, 10...
Connecting rod, 13...Mounting piece, 14...Fender, 1
5...screed, 20...narrow groove, 30...
Asphalt finish.

Claims (1)

[Claims for Utility Model Registration] (1) The screed has a bottom surface set to a paving width narrower than the paving width of the screed provided on the asphalt finisher, and is set at a predetermined height. A screed adapter characterized in that the front end is hooked to the forming edge side, and the rear end side is removably connected to the screed via a connecting means, and is arranged substantially parallel to the paving surface of the screed. (2) The screed adapter according to claim 1, wherein the operating portion of the connecting means is provided so as to be operable outside the asphalt finisher. (3) Claim 1 characterized in that a spacer set at a uniform height is removably interposed between the screed adapter and the bottom surface of the screed.
Screed adapter listed.