JPH074509U - Asphalt finisher with swing type auxiliary screen - Google Patents

Abstract

(57) [Summary] [Purpose] The work time for installing / removing and storing the auxiliary screen in the asphalt finisher is shortened, and the labor of the operator is greatly reduced, and at the same time paving is performed by the auxiliary screen stored during paving. The purpose is to avoid scratching the surface. [Structure] In an asphalt finisher, a hinge plate 11 attached to an end surface of an auxiliary screen 6 is attached to a hinge plate 11 attached to an end surface of an expansion / contraction screen 5, and a hinge plate 10 attached to an end surface of an auxiliary screen 6 is angled with respect to a vertical surface or a vertical surface. It is attached so that it can be rotated 180 ° rearward through the hinge pin 7 that is inclined by θ.
The upper surface 10 is attached to the hinge plate 10 on the side of the auxiliary screen 6.
The side protrusion 10b having a slanted d is provided, and the side protrusion 10b
The hinge plate 11 on the side of the expansion / contraction screen 5 is provided with a recess 11e corresponding to the upper surface 10d of the recess 11e.
A protrusion 11a is provided on the opposite side of the recess 11e of the hinge plate 11 to allow the lateral protrusion 10b of the expansion / contraction screen 6 to ride up when stored, and the auxiliary screen 6 is moved backward. It can be rotated and fixed to the end of the telescopic screen 5 with bolts.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an asphalt finisher having a swing type auxiliary screen.

[0002]

[Prior art]

 FIG. 1 shows a state in which a hopper 1 of an asphalt finisher (plan view) is opened. 2 is a feeder conveyor at the bottom of the hopper, and 3 is a screw spreader. Reference numeral 4 is a main screen, 5 is a telescopic screen, and 6 is an auxiliary screen. Conventionally, the maximum paving width of a screen device with an expansion / contraction screen for continuously changing the paving width of such an asphalt finisher cannot be more than twice the minimum paving width. When paving with a paving width greater than the maximum paving width, an auxiliary screen 6 is attached to the end surface of the expansion / contraction screen 5 by lifting it manually or by a crane as shown in FIG. 1 (a). Therefore, the attachment of the auxiliary screen 6 requires a great deal of labor, and the attachment adjustment takes time. In addition, when the auxiliary screen 6 was removed, it was necessary to consider the transportation and storage location. There has been a conventional idea of rotating the auxiliary screen 6 by a hinge or the like for mounting / removing and storing, but since there is no mounting position adjusting mechanism and a storing auxiliary lifting mechanism for the main screen. , Was hardly put into practical use.

[0003]

[Problems to be solved by the device]

 The present invention shortens the work time of installing / removing and storing the auxiliary screen in the asphalt finisher and greatly reduces the labor of the operator, and at the same time, scrapes the paving surface with the auxiliary screen stored during paving. The purpose is not to.

[0004]

[Means for Solving the Problems]

 In the asphalt finisher, the hinge plate 11 attached to the end face of the expansion / contraction screen 5 is attached to the hinge plate 10 attached to the end face of the auxiliary screen 6 through the hinge pin 7 inclined at an angle θ with respect to the vertical plane. The hinge plate 10 on the side of the auxiliary screen 6 is provided with a side projecting portion 10b having an inclined upper surface 10d, which corresponds to the upper surface 10d of the side projecting portion 10b. The hinge plate 11 on the side of the expansion / contraction screen 5 is provided with a recessed portion 11e, the inclined surface 11d is provided on the upper surface of the recessed portion 11e, and the expansion / contraction screen 6 is provided on the opposite side of the recessed portion 11e of the hinge plate 11. The side projection 10b is provided with a projection 11a that rides up when stored, and the auxiliary screen 6 is pivoted rearward so that it can be fixed to the end of the telescopic screen 5 with a bolt. Further, an L-shaped bracket 6a is fixedly mounted on the upper surface of the side portion of the auxiliary screen 6, while a side projection 10a is provided on the end surface of the expansion / contraction screen 5, and the L-shaped bracket 6a is formed on the side projection 10a. The bolt 12 screwed from the top surface of the bracket 6a enables vertical adjustment, and the bolt 15 inserted in the vertical hole 15a provided on the side surface of the L-shaped bracket 6a allows the horizontal inclination to be adjusted.

[0005]

【Example】

 FIG. 2 is a schematic plan view of an asphalt finisher embodying the present invention, in which 1 is a hopper, 2 is a feeder conveyor, 3 is a screw spreader, and the asphalt mixture spread to a predetermined pave width is used for the main screen. 4 and expansion screen 5 are used to pave to a uniform thickness. Further, an auxiliary screen 6 is pivotally supported by a hinge pin 7 at the rear end of the expansion / contraction screen 5. As shown in FIG. 2 (b), the auxiliary screen 6 is rotated 180 degrees rearward around the hinge pin 7 for storage.

FIG. 3 is an enlarged view of the state in which the auxiliary screen 6 in FIG. 2 is housed (the two-dot chain line indicates the time of use). A stopper 8 is provided behind the telescopic screen 5 and the auxiliary screen 6 is locked to the stopper 8. The auxiliary screen 6 is supported by a hinge pin 7 via a hinge plate 10 attached to its side surface. FIG. 4 is a side view of the auxiliary screen 6 which is located behind the telescopic screen 5 and is in a state of being lifted and stored before being rotated, and FIG. 5 is a perspective view of the auxiliary screen 6 after being rotated.

The storage state of the auxiliary screen 6 will be described with reference to FIG. The hinge plate 10 is fixed to the side surface of the auxiliary screen 6 with the bolt 16 and the hinge plate 11 is attached to the side surface of the telescopic screen 5 with the bolt 17. The hinge plates 10 and 11 are pivotally supported by hinge pins 7. In the example shown in the figure, the hinge pin 7 is tilted at an angle θ with respect to the vertical plane (Fig. 8) so that the auxiliary screen 6 tilts upward at an angle θ (eg, θ = 8 °) with respect to the horizontal plane when stored. It is mounted so that it can be lifted up (for example, a lifting amount of 12 mm) and stored.

The hinge plate 10 is fixed to the expansion / contraction screen 5 with bolts 14. For adjusting the auxiliary screen 6 in the vertical direction, a bolt 12 is attached to a lateral projecting portion 10a of the side surface of the hinge plate 10 downward from the top of the L-shaped bracket 6a of the auxiliary screen 6. Further, a bolt 15 which is horizontally mounted on the side surface of the hinge plate 10 for adjusting the inclination of the auxiliary screen 6 in the left-right direction is provided in the L-shaped bracket 6a of the auxiliary screen 6 in the longitudinal slot 15a. Are connected via.

Further, the lower surface 10c of the lateral projection 10b provided at the rear end of the hinge plate 10 as a lifting mechanism for storing the auxiliary screen 6 is provided on the upper surface 11c of the projection 11a on the rear side of the hinge plate 11. It has a structure that allows you to get on. As shown in FIG. 5, when the auxiliary screen 6 pivots laterally from the rear of the telescopic screen 5, the lower surface 10c of the protruding portion 10b makes it easier to ride on the protruding portion 11a. It has 11b. Reference numeral 11e designates a concave portion provided in the hinge plate 11, into which the lateral protruding portion 10b of the hinge plate 10 is inserted when it is laterally extended. The upper surface 10d of the lateral protruding portion 10b is an inclined surface, and an inclined surface 11d is provided on the hinge plate 11 side corresponding to this. The one side of the auxiliary screen 6 has been described above, but the same type is symmetrically provided on the rear left and right sides of the expansion / contraction screen 5.

With the above-described structure, when the auxiliary screen 6 is swung forward and stored in FIG. 5, the lateral protrusion 10b is swung within the recess 11e of the hinge plate 11. At this time, the inclined upper surface 10d of the lateral protrusion 10b and the inclined surface 11d rotate while making contact with each other. At this time, the auxiliary screen 6 gradually rises due to the existence of the inclined surface and finally rotates, and finally. As shown in FIG. 8, the lower surface 10c of the lateral protruding portion 10b rides on the upper surface 11c of the protruding portion 11a. Therefore, even if there is unevenness on the pavement surface, it can be stored smoothly without rubbing. In this case, when the hinge pin 7 is inclined by the angle θ, the auxiliary screw 6 has a large inclination, and the interference with the pavement surface can be effectively prevented.

[0011]

【effect】

 Due to the above configuration, when paving a wide road width that cannot be paved with only the main screen 4 and the expansion / contraction screen 5, the attachment position of the auxiliary screen 6 to the expansion / contraction screen 5 is set in the vertical direction. Is adjusted with the bolt 12 and the inclination in the left-right direction is adjusted with the bolt 15 once. Further, even when a step or the like occurs in the attachment of the expansion screen 5 and the auxiliary screen 6 due to long-term use, it is easy to readjust the attachment position of the auxiliary screen 6.

When the auxiliary screen 6 is not used, the auxiliary screen 6 can be pivoted rearward about the hinge pin 7 to be stowed behind the telescopic screen 5. At this time, the auxiliary projection 6 is lifted upward by the existence of the inclined surfaces of the lateral projection 10b and the concave portion 11e, and the lateral projection 10b is projected by the existence of the inclined hinge pin 7. Since it rides on top, it does not scratch the paved surface. By inclining the hinge pin 7 by the angle θ, the auxiliary screen 6 can be rotated while being more inclined, and the interference with the pavement surface can be effectively prevented. In this way, since the auxiliary screen 6 can be attached to and retracted from the telescopic screen 5 by a very simple operation of simply rotating the auxiliary screen 6, the auxiliary screen 6 can be attached and detached. It is possible to significantly save labor and labor in transportation and storage work.

[Brief description of drawings]

FIG. 1 shows a known asphalt finisher provided with an auxiliary screen, FIG. 1 (a) shows a state in which an expansion / contraction screen is extended, and FIG. 1 (b) shows a state in which it is also contracted.

2A and 2B show an asphalt finisher according to the present invention, in which FIG. 2A is a state in which an expansion screen is extended and an auxiliary screen is also used, and FIG. 2B is a state in which the expansion screen is contracted and an auxiliary screen is used. The state that the code is stored.

FIG. 3 is an enlarged view of the auxiliary screen according to the present invention when it is stored before turning.

FIG. 4 is a side view of the auxiliary screen according to the present invention before being rotated.

FIG. 5 is a perspective view of the auxiliary screen according to the present invention after rotation.

FIG. 6 is a vertical adjusting mechanism for an auxiliary screen.

FIG. 7 is a tilt adjustment mechanism for the left and right of the auxiliary screen.

FIG. 8 is a detailed view of a hinge lifting mechanism when the auxiliary screen is stored.

[Explanation of symbols]

1 Hopper 2 Feeder Conveyor 3 Screw Spreader 4 Main Screen 5 Telescopic Screen 6 Auxiliary Screen 6a L-shaped Bracket 7 Hinge Pin 8 Stopper 9 Steps 10, 11 Hinge Plate 10a Side Projection 10b Side Projection Part 10c (side protrusion)
Lower surface 10d (upper side) 11a Projection 11b Inclined surface 11c (Projection) upper surface 11d Inclined surface 11e Recess 12,13,14,15,16,17 Bolt

Claims (3)

[Scope of utility model registration request] 1. In an asphalt finisher, a hinge plate (11) attached to an end surface of a telescopic screen (5).
On the other hand, the hinge plate (10) attached to the end surface of the auxiliary screen (6) is mounted rotatably backward by 180 ° via the hinge pin (7), and the hinge plate on the side of the auxiliary screen (6) is attached. -Providing a side projection (10b) with an inclined upper surface (10d) on the gate (10), and corresponding to the upper surface (10d) of the side projection (10b), the hinge plate on the side of the expansion / contraction screen (5). The recess (11e) is provided on the port (11), the inclined surface (11d) is provided on the upper surface of the recess (11e), and the expansion / contraction screen is provided on the opposite side of the hinge plate (11) from the recess (11e). A protrusion (11a) on which the side protrusion (10b) of the cord (6) rides up when housed is provided, and the auxiliary screen (6) is rotated 180 ° rearward to extend and retract the shield screen (5). An asphalt finisher equipped with a swing type auxiliary screen, which can be fixed to the end of the. 2. The asphalt finisher with a swing type auxiliary screen according to claim 1, wherein the hinge pin (7) is inclined at an angle θ with respect to a vertical plane. 3. An L-shaped bracket (6a) is fixedly mounted on the upper surface of a side portion of the auxiliary screen (6), while an expansion / contraction screen (5) is fixed thereto.
A side protrusion (10a) is provided on the end face of the
For (a), the bolt (12) screwed from the top of the L-shaped bracket (6a) enables vertical adjustment, and the bolt (15) inserted in the vertical hole (15a) provided on the side surface of the L-shaped bracket (6a). An asphalt finisher equipped with the swing-type auxiliary screen according to claim 1 or 2, wherein the left-right inclination can be adjusted by.