JPS6133048Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a device that is attached to an asphalt finisher to adjust the pavement height in order to obtain a flat surface when performing pavement work using an asphalt finisher. This is an idea related to.

Flatness of the paved surface is often strongly required not only on playing courts, stadiums, and other special fields, but also on general roads. Therefore, the methods that have been often used in the past are to either use conventional road paving equipment as shown in Figure 1, or to install a tensioner before installing the formwork, and to use the formwork as a reference line. Currently, we have no choice but to use paving machines to finish the work, or rely on hand leveling. According to the first method, the weight of the paving machine directly affects the roadbed. This requires the roadbed to have an unnecessarily strong supporting capacity for the service load. The second method had drawbacks such as requiring skill to install the formwork, increasing labor costs, and making it difficult to obtain flatness.

In view of such circumstances, this invention is installed on both sides of the screed of an asphalt finisher, and the vertical height of the screed can be freely adjusted to level the paving based on the set height. The purpose of this invention is to provide a width adjustment device to the general public.

The present invention will be described in detail below with reference to the drawings of each embodiment.

First, in FIG. 2 showing the front right side of the device of the present invention, reference numeral 1 in the figure indicates a pair of reference rails laid on both sides of a board or base layer 11. Reference numeral 1a denotes a pillow material for the reference rail 1, and although not shown, the reference rail member 1 has a structure in which the height reference can be freely adjusted by, for example, a shovel mechanism, assuming the unevenness of the surface of the roadbed or base layer. It is also possible to do this. It should be noted again that, like the reference rail 1, the members to be explained below are shown on the right side of the front of the entire machine.According to this, 2 in the figure indicates the screed of the asphalt finisher. Slide columns 3 are vertically fixed on both sides of the screed 2. In order to further clarify the shape of the slide support 3, referring to the perspective views of FIGS. A support member 3b is provided at the top of the support member 3b to which the upper end of a male screw rod 5 for adjustment, which will be described later, is screwed and locked.
A convex sliding guide 4 forming a pair of dovetails with the dovetail groove 3a is fitted into the groove 3a. It can be slid up and down. In other words, a female screw 4a is carved on the inner surface of the central part of the sliding guide 4, and by vertically screwing the male screw rod 5 into the female screw 4a, the male screw rod 5 can be rotated in the forward and reverse directions. When rotated in either direction, the slide support 3 slides upward or downward based on the position of the slide guide 4. Note that 5a in the figure indicates a tool locking portion formed for rotating the male threaded rod 5 with a tool such as a spanner or a handle. Next, an arm 6 made of H-shaped steel or the like is fixedly installed in the horizontal direction of the sliding guide 4, and two sets of wheel bearing frames 8, 8 are connected to the tip of the arm 6 via a supporter 7. It will be permanently installed. These structures related to the arm 6 are shown as shown in the figure, but are not particularly limited thereto. Running wheels 9, 9 having a wheel width larger than the width of the reference rail 1 are supported on the wheel bearing frames 8, 8, and attack angle adjusting bolts 10, 10 are mounted on the wheel bearing frames 8, 8.
These two sets of running wheels 9, 9 can be adjusted vertically with respect to each other, and are configured to run on the reference rail 1 described at the beginning.

Next, embodiments of the present invention will be described using each figure.

First, the reference rails 1, 1 are laid on both sides of the roadbed or base layer 11, and the height is parallel to the planned pavement height in order to obtain accurate paving finish height and levelness, taking into consideration the unevenness of the base layer 11. Put it out. After that, the running wheels 9, 9 attached to both ends of the screed 2 of the asphalt finisher are placed on the reference rails 1, 1. At this time, the screed 2 is adjusted by moving up and down so that the set height takes into account the rolling allowance of the paving material S, etc. Specifically, the slide posts 3 provided at both ends of the screed 2,
The male screw rods 5, 5 for adjustment installed in 3,
Tool locking parts 5a, 5 formed at their tips
Engage a spanner tool with a and rotate it in either the forward or reverse direction. By the rotation of the male screw rods 5, 5,
The slide supports 3, 3 are in an upward direction or Moves freely downward. That is,
In other words, the screed 2 moves up and down together with the slide columns 3 on both sides thereof.
To explain again, during these operations, the arms 6, 6 extending horizontally from the sliding guides 4, 4, their supports 7, 7, and the four running wheels attached to the supports 7, 7, respectively. It goes without saying that the set of configurations such as 9 are in a fixed position corresponding to the traveling reference rails 1, 1 set at a set height. When the height adjustment operation of the screed 2 is completed, the screed 2, which has an operating engine and is connected by a universal joint to a traction device such as a crawler that serves as the base, spreads the paving material S while running. Do it.

As described above, according to the device according to the embodiment of the present invention, the running reference rails 1, 1 are laid at a level in advance.
The screed 2 is adjusted so that it can run on the top at a set height, and the screed 2 is leveled, but the screed 2 lays on a certain reference line without going too far below the reference rails 1, 1. Since the machine runs for leveling, it is possible to obtain the leveling height that is always required, as well as the finished pavement height, which has the advantage of providing excellent leveling properties. In addition, since the wheel width is larger than the rail width, the wheels can run smoothly on the rail even if the rail laying position is slightly shifted when laying the rail, making the rail laying work easier and easier. Another advantage is that work efficiency can be improved.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view showing a conventional finisher, Fig. 2 is a detailed view showing a part of the front right side of the screed of the finisher equipped with the device of the present invention, and Fig. 3 is a schematic perspective view showing a conventional finisher.
This figure is a plan view of the same, and FIGS. 4A and 4B are a perspective view and a partially sectional view showing the vertical sliding mechanism. 1... Traveling reference rail, 2... Finisher screed, 3... Slide support, 3a... Dovetail hole, 4... Sliding guide, 4a... Female screw,
5... Male screw rod for adjustment, 5a... Tool locking portion, 6... Arm, 8... Roller bearing frame, 9... Running wheel.

Claims (1)

[Scope of utility model registration request] In a combination in which a pair of reference rails and wheels running on the reference rails are connected to arms provided on both sides of the screed of an asphalt finisher, the screed and the arms provided on both sides of the screed A set of vertical sliding mechanisms are interposed, and the wheels connected to the arms are composed of two wheels, which can be adjusted vertically with respect to each other, and the screed can be adjusted to the paving height with respect to the reference rail. A pavement height adjustment device for an asphalt finisher, characterized in that the width of the wheel is larger than the width of the reference rail.