JPH022732Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a leveling device installed on asphalt finishers, base paper, and the like.

``Prior Art'' As is well known, in an asphalt finisher, as shown in FIG. The material is sent to the rear spreading screw 4, where it is spread evenly to the left and right, and then spread evenly on the road surface by a leveling device 6 suspended from the rear of support arms 5, 5. There is.

There are various types of the above-mentioned leveling device 6, but as shown in FIGS. 15 to 17, a frame 7 connected to the rear ends of the support arms 5, 5 is attached to a frame 7 at the front end, respectively. A front screed 9 and a rear screed 10 equipped with tampering devices 8 and 8 are installed so as to be movable left and right, and furthermore, in front of the tampering devices 8 and 8 of each of these screeds 9 and 10, there is a device for feeding the mixture to the rear. A structure in which a front deflector 11 and a rear deflector 12 are respectively provided for adjusting the amount is often used. This type of leveling device 6
In this method, the tamper devices 8, 8 are operated to vibrate the tamper bars 8a, 8a up and down to tamper the composite material, and then the mixture is spread evenly with the screeds 9, 10.

"Problems to be Solved by the Invention" In the conventional leveling device 6 described above, since each tamper bar 8a, 8a of each tamper device 8, 8 moves up and down, each tamper bar 8a, 8a and each deflector 11, 12 (In the case of deflectors 11 and 12 as shown in FIG. 17, the strike-off member 11 at the lower end
a, 12a) with a slight gap d (usually 0.5
~1mm) is provided. Then, when the leveling work is performed, each deflector 1 is
The composite material enters between the deflectors 1 and 12 and the tamper bars 8a and 8a and adheres to the rear surfaces of the deflectors 11 and 12, but if this adhesive composite material is left as it is, it will solidify the next day. There is a possibility that the tamper devices 8, 8 may become stuck. For this reason,
After finishing the leveling work, each deflector 11, 12
The adhering material must be removed by moving it forward or removing it. However, in the leveling device 6 having the above structure, there inevitably occurs a portion where the front screed 9 and the rear screed 10 overlap, and the front screed 9 gets in the way at that portion, making it impossible to move the rear deflector 12 forward. Furthermore, although it is possible to remove the entire rear deflector 12 by pulling it out to the side, in this case it is not easy to reattach the rear deflector 12 to its original state with precision. It was actually difficult to remove the composite material adhering to the rear surface of No. 12.

This invention was made in view of the above circumstances,
It is an object of the present invention to provide a leveling device for an asphalt finisher or the like that can extremely easily and quickly remove composite material attached to the rear surface side of a rear deflector.

``Means for Solving the Problems'' In order to achieve the above object, the present invention provides a front screed and a rear screed, each equipped with a tamper device at the front, on the left and right sides of a frame provided on the support arm of the traveling vehicle body. The front screed and rear screed tamper devices are equipped with a front deflector and a rear deflector, respectively, to adjust the rearward feed amount of the leveling material such as asphalt mixture. In leveling equipment at asphalt finishers, etc.,
The rear deflector is rotated back and forth with its upper end supported by a support member attached to the rear screed at the front part of the tampering device of the rear screed at the expanded end of both screeds at a position that is shifted from the front screed in the left and right direction. a first deflector member which is freely disposed and removably locked by a locking means attached to the rear screed; and a second deflector member disposed at the overlapping portion located at the second deflector member.

"Function" In the above configuration, during leveling work, the rear deflector is locked to the rear screed with a predetermined minute gap maintained between it and the tamper bar of the tamper device. When removing the composite material adhering to the rear surface of the rear deflector after the leveling work is completed, both screeds are first moved outward to the expanded end. Next, the locking by the locking means is released, the first deflector member is rotated forward, and the composite material adhering to the rear surface and the rear tamper device is removed. In addition, since the second deflector member is always positioned overlapping the front screed, there is almost no mix material supplied to that part, and therefore the amount of mix material that adheres to the rear side of the second deflector is small. It is. This adhering composite material is removed by spraying light oil or the like from the side as necessary.

``Example'' Below, an example of the present invention is shown in Figures 1 to 13.
This will be explained with reference to the figures. Note that parts having the same basic structure as those of the conventional example are given the same reference numerals as those of the conventional example, and the explanation thereof will be omitted.

In the figure, 20 is a rear deflector. This rear deflector 20 is located at the front of the tampering device 8 of the rear screed 10 at the extended ends of both screeds 9, 10 (with the front screed 9 at the left end and the rear screed 10 at the left end).
the first deflector member 21 provided at a position shifted to the right from the front screed 9 when
At the front of the tampering device 8 of 0, both screeds 9, 10
A second deflector member 22 provided at the overlapping part located at the rear of the front screed 9 at the expanded end of the second deflector member 22
The first deflector member 21 is further divided into two parts: an inner member 21a on the left side and an outer member 21b on the right side.

The inner member 21a is long from side to side, has a predetermined length vertically, and has an inclined plate 23 which is slightly inclined downwardly and forwardly, and a vertically extending spaced apart from each other on the rear surface of this inclined plate 23. It consists of a plurality of reinforcing plates 24 provided, and a strike-off member 25 attached to the lower edge of the inclined plate 23 and slightly inclined downward toward the rear. The pipes 26, . . . are attached coaxially with their axes facing left and right and spaced apart from each other by predetermined intervals l ₁ and l ₂ . Then, in the space l ₁ to the left,
A pin 28 rotatably inserted into a pipe 27 shorter than the interval l ₁ connects both ends of the pin 28 to the left and right pipes 26, 2.
6, and a pin 29 is provided at the right spacing _l2 , with both ends of the pin 29 being fitted and fixed into the left and right pipes 26, 26, respectively. Further, the front end of a bar member 30 having a threaded portion 30a formed on the rear end side is reinforced and fixed to the rear side of the pipe 27 by a reinforcing member 31. , is inserted into a through hole in the screed frame 10a of the rear screed 10, and is fixed with nuts 32, 32. Furthermore, the screed frame 10a
A bracket 33 is fixed to a portion located behind the pin 29 by bolts 34, _.
A slightly shorter half-pipe-shaped locking member 35 is
They are provided on the left and right with the opening side facing forward, and the rear side of the pin 29 is locked by this locking member 35. And the rod member 30,
The pipe 27, the bracket 33, the locking member 35, and the like constitute a support member 36 that supports the inner member 21a so as to be rotatable back and forth.

Furthermore, a pair of vertical locking plates 37, 37 are fixed to the middle part of the rear surface of the inclined plate 23 with an interval left and right, and the locking plates 37, 37 have locking holes penetrating left and right, respectively. 37a, 37a are bored. Further, in a portion of the screed frame 10a located behind the locking plates 37, 37, there is a U-shaped groove 38a extending back and forth and opening upward.
Mounting seats 38, 38 each having a threaded portion 39a, 39a are fixed to each mounting seat 38, 38, and each mounting seat 38, 38 has a rod 39, which has a threaded portion 39a, 39a formed on the rear end side.
39, the male threaded portions 39a, 39a are inserted into the respective grooves 38.
a, 38a, and insert multiple nuts 4 from the front and back.
0,... are fastened and attached respectively. The front end of each of the rods 39, 39 is formed in an L shape, and the locking hole 37 of each of the locking plates 37, 37 is
a, 37a are fitted and locked. The rod 39, mounting seat 38, etc. are connected to the inner member 21a.
It constitutes a locking means 41 that releasably locks.

On the other hand, although the detailed structure of the outer member 21b is not shown, since the basic structure is the same as that of the inner member 21a, each part is given the same reference numeral and a description thereof will be omitted.

Further, the second deflector member 22 has a considerably shorter left-right length than the inclined plate 23, and the inclined plate 42 has a considerably shorter horizontal length than the inclined plate 23.
It consists of a reinforcing plate 43 provided vertically on the rear surface of the inclined plate 42, and a strike-off member 44 attached to the lower edge of the inclined plate 42. A pipe 45 is attached. A pin 46 longer than the horizontal length of the inclined plate 42 is rotatably inserted into the pipe 45, and the right end of the pin 46 is fitted into and fixed to the left pipe 26 of the inner member 21a. ing. Further, the exposed portion on the right side of the pin 46 is locked by a locking member (hereinafter also referred to as 35) having the same structure as the locking member 35, and is locked to the rear surface of the inclined plate 42. A locking plate 47 having a locking hole 47a is fixed, and a rod 39 of locking means (also designated by 41 in the figure) similar to the locking means 41 described above is locked in the locking hole 47a.

Note that the tamper device 8 rotates the tamper shafts 8c, 8c by the tamper motor 8b, and moves the bearings 8d, . , 8e are moved up and down.

However, in the leveling device with the above configuration,
The rear deflector 20 is locked at a position that maintains a predetermined minute gap with the tamper bars 8a, 8a during leveling work. That is, the first deflector member 21
The upper edges of the inner member 21a and outer member 21b of the screed frame 10 are supported from the rear by locking members 35, .
a, and is held at a predetermined position by the rods 39, . . . of the locking means 41, . Further, the second deflector member 22 is also supported from the rear by a locking member 35, is engaged with the inner member 21a by a pin 46, and is held in a predetermined position by a locking means 41. .

On the other hand, when the adhering composite material on the rear side of the rear deflector 20 is to be removed after the leveling work is completed, the front screed 9 is first moved to the left end, and the rear screed 10 is moved to the right end. Then,
The nuts 40, . and,
Regarding the first deflector member 21, the inner member 2
1a and the outer member 21b, the pin 2 on the upper edge
8 and 29 to remove the composite material adhering to the rear surface, the tamper bar 8a of the tamper device 8, etc. Further, regarding the second deflector member 22, since the front screed 9 gets in the way,
Although it is not possible to rotate this fully forward, use the slight gap between it and the front screed 9 to rotate it slightly forward, and spray light oil etc. from the side to the rear side. Remove adhering composite material. In addition, since the second deflector member 22 is always located behind the front screed 9 in an overlapping manner, there is almost no supply of composite material to that portion. Therefore, the amount of composite material adhering to the rear surface side of the second deflector member 22 is small, and can be sufficiently removed by the method described above.

"Effects of the Invention" As explained above, the leveling device of the present invention has a first deflector member in which the rear deflector is disposed at a location where the front screed does not get in the way when both screeds are moved to the expanded end. and,
In the above state, it is divided into a second deflector member disposed at a position overlapping the rear of the front screed, and the first deflector member, where the composite material enters the rear side, can be rotated forward. Even if composite material adheres to the rear side of the rear deflector, it can be removed easily and quickly.
This has the effect that the maintainability of the device is significantly improved compared to the conventional method.

[Brief explanation of drawings]

1 to 13 show one embodiment of the present invention, in which FIG. 1 is an enlarged rear view of the rear deflector, FIG. 2 is a sectional view taken along the - arrow in FIG. 1, and FIG. 4 is a sectional view taken in the direction of the arrow, FIG. 5 is a sectional view taken in the direction shown in FIG. 4, and FIG.
The figure is an enlarged view of the circular part in Fig. 1, Fig. 7 is an enlarged view of the same circular part, Fig. 8 is a plan view of the rear screed, Fig. 9 is a rear view of the same, and Fig. 10 is the - of Fig. 9. Fig. 11 is a sectional view taken along the arrows XI-XI in Fig. 8;
Figure 12 is a sectional view taken along arrows XII-XII in Figure 11;
14 to 17 are for explaining the prior art. FIG. 14 is an overall side view of the asphalt finisher, and FIG. 15 is a plan view of the screed portion. , 1st
FIG. 6 is a side view of the screed, and FIG. 17 is an enlarged sectional view of the same essential part. DESCRIPTION OF SYMBOLS 1... Traveling vehicle body, 5... Support arm, 7... Frame, 8... Tamper device, 9... Front screed, 10... Rear screed, 11... Front deflector, 20... Rear deflector, 21... 1st
Deflector member, 22... second deflector member,
36... Supporting member, 41... Locking means.

Claims (1)

[Scope of utility model registration request] A front screed and a rear screed, each equipped with a tampering device at the front, are installed on a frame provided on the support arm of the traveling vehicle body so as to be movable from side to side. In a leveling device for an asphalt finisher, etc., which is equipped with a front deflector and a rear deflector that adjust the rearward feed amount of the leveling material such as asphalt mix, the rear deflector is connected to the rear screed. At the front of the tamper device, at the extended ends of both screeds, a part is provided at a portion that is shifted from the front screed in the left-right direction, the upper end is supported by a support member attached to the rear screed, and is rotatable back and forth, and is attached to the rear screed. The first deflector member is removably locked by an attached locking means, and the first deflector member is disposed at an overlapping portion located at the rear of the front screed at the extended ends of both screeds at the front of the tamper device of the rear screed. and a second deflector member.