JP3004021U - Asphalt finisher side plates and side plate attachments - Google Patents

Abstract

(57) [Summary] [Purpose] Coarse aggregate easily sinks in the lower layer at the diffusion edge of the composite,
Further, the boundary line of the diffusion edge is made inconspicuous. An attachment 6 to be attached to a side plate provided at a side end portion of a screed, a fastening hole 10 to be attached to the side plate, and an upright surface portion 7 extending along a traveling direction and standing up substantially vertically. An inclined guide surface portion 8 formed at a lower portion of the upright surface portion so as to be inclined downward toward the transfer base end side of the screw conveyor, and a lower end edge thereof is obliquely positioned with respect to the traveling direction. The lower end edge of the guide surface portion was inclined so as to gradually approach the standing surface portion side from the front end to the rear end.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a side plate, which is provided at a side end of a screed of an asphalt finisher, and regulates a diffusion range of a mixture material that is transferred and diffused from a hopper to a left and right by a screw conveyor, and a side plate attachment. .

[0002]

[Prior art]

 In the conventional asphalt finisher, the operating range of the screed can be adjusted according to the width of the pavement, and the side plate that controls the diffusion range of the asphalt mixture that is transferred from the hopper to the left and right by the screw conveyor spreads side edges of the screed. It is attached to the part. The side plate is composed of a plate material that extends along the traveling direction of the asphalt finisher and stands up substantially vertically, and can move up and down according to the height of the pavement surface. Further, for example, as described in Japanese Utility Model Publication No. 5-3526, a structure in which a vertical pin or arm is provided so as to be rotatable is required, and paving with a screed maximum paving width or more is required. In such a case, a part of the side plate is pivoted sideways while the widening part can be easily paved while the paving work is performed by tilting the side plate to the traveling direction of the asphalt finisher. However, even if a part of the side plate is rotated to the side, there is a limit to the range in which it can be widened, and when the pave width such as two lanes or three lanes is wide, the conventional asphalt described above is used. Even finishers cannot use asphalt in one pass. For this reason, when asphalt pavement is used in a wide field where one asphalt finisher cannot be used for one-pass paving, hot joint construction is performed using two asphalt finishers, or one asphalt finisher is used. I was making two round trips and three round trips with the pusher. In either case, it is necessary to carry out end treatment in which the end edge of the paved portion is closely adhered to the end edge of the paved portion and the end portion of the paved portion is joined flat. If it is exposed, it causes peeling and other inconvenience. Remove coarse aggregate with a rake, etc. and sufficiently compact it so that joints on the surface are not conspicuous.

[0003]

[Problems to be solved by the device]

 However, it requires human power to remove the coarse aggregate by the above-mentioned terminal treatment, collect the coarse aggregate with a scoop, etc., and process the joint part with a rake, etc. Since it is a work, it lacks stability to the finish and sometimes has irregularities. Moreover, since the conventional side plate is composed of plate materials arranged in parallel to the traveling direction of the asphalt finisher, the diffusion edge of the asphalt mixture material whose diffusion range is regulated by this side plate is the boundary portion. It remains as a clear line, and much effort is required to make this boundary line inconspicuous. Since these terminal treatments require the worker to walk around to carry out the work, a large number of footprints remain in the periphery, which adversely affects the finished surface. Therefore, an object of the present invention is to make coarse aggregate easily sink to the lower layer at the diffusion edge of the composite material, and to make the boundary line of the diffusion edge inconspicuous.

[0004]

[Means for Solving the Problems]

 The present invention has been proposed to achieve the above object, and the invention according to claim 1 is provided at a side end portion of a screed of an asphalt finisher, and is laterally transferred and diffused from a hopper by a screw conveyor. In the side plate that controls the diffusion range of the composite material, the side plate is a standing surface that extends along the advancing direction of the asphalt finisher and stands substantially vertically, and a lower part of the standing surface on the center side of the screw conveyor. A side plate of an asphalt finisher, which has a slant guide surface that is formed so as to be inclined downwardly and a lower end edge thereof is positioned obliquely with respect to the traveling direction of the asphalt finisher.

According to a second aspect of the present invention, in addition to the structure of the first aspect, the lower edge of the inclined guide surface is inclined so as to gradually approach the standing surface side from the front end to the rear end. It is a side plate of the asphalt finisher.

According to a third aspect of the present invention, there is provided an attachment to be attached to a side plate provided at a side end portion of a screed of an asphalt finisher, the attachment being an attachment portion detachably attached to the side plate, It is formed so as to extend along the traveling direction of the asphalt finisher, and is formed so as to be inclined downward toward the transfer base side of the screw conveyor, and the lower end edge is positioned obliquely to the traveling direction of the asphalt finisher. An attachment for a side plate of an asphalt finisher, which is characterized by having a slanted guide surface portion.

According to a fourth aspect of the present invention, in addition to the structure of the third aspect, the lower end edge of the inclined guide surface portion is inclined so as to gradually approach the side plate from the front end to the rear end. It is an attachment for side plates of asphalt finishers.

According to a fifth aspect of the present invention, there is provided the side plate attachment, wherein a bottom plate portion extending in the horizontal direction is provided on the lower end edge of the inclined guide surface portion.

According to a sixth aspect of the present invention, there is provided a side plate attachment having a roller provided at a rear end portion of the bottom plate portion.

[0010]

[Action]

 When the mixed material is transferred and diffused by the screw conveyor, the top of the mixed material hits the side plate and further diffusion is prevented. Then, the composite material that hits the side plate is pressed by the composite material that is transferred later without staying on the spot, and the composite material that receives this pressing force is guided to the inclined guide surface or the inclination of the inclined guide surface portion. It goes down. Therefore, due to the generation of this downward flow, the coarse aggregate is flown down and does not float even if the particle size is large. That is, it becomes difficult for coarse aggregate to appear on the pavement surface. Further, if the lower end edge of the inclined guide surface or the inclined guide surface portion is inclined with respect to the traveling direction of the asphalt finisher, the boundary line of the diffused asphalt mixture cannot be clearly seen. Therefore, the joint portion between the edge of the preceding paved portion and the portion paved later is less noticeable.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. Asphalt finisher 1, as shown in FIG. 1, transfers a hopper 2 that stores a mixture such as an asphalt mixture to the front of the driver's seat and a mixture in the hopper 2 to the left and right behind the driver's seat. The screw conveyor is equipped with screeds 4 on the left and right for compacting the mixed material diffused behind the screw conveyor. Then, by moving the positions of both screeds 4 to the left and right according to the width of the pavement surface, the position of the side plate 5 attached to the side end of the screed 4 is adjusted, and the transfer and diffusion is performed by the screw conveyor. The diffusion range of the mixed material is regulated, and the compaction range can be adjusted by the screed 4. Further, in this embodiment, the attachment 6 according to the present invention is attached to the side plate 5. The side plate 5 is made of an iron plate that extends along the traveling direction of the asphalt finisher 1 and stands substantially vertically.

As shown in FIGS. 2 and 3, the attachment 6 extends in the front-rear direction along the traveling direction of the asphalt finisher 1 in a state where it is attached to the side plate 5 by a later-described attachment portion. 5, an upright surface portion 7 standing upright almost vertically, and a lower portion of the upright surface portion 7 which is formed to incline downward toward the transfer base end side of the screw conveyor, and the lower end edge thereof is in the traveling direction of the asphalt finisher 1. An inclined guide surface portion 8 formed obliquely with respect to the inclined guide surface portion 8 and a ski-shaped bottom plate which is provided by connecting the lower end edge of the inclined guide surface portion 8 to the outside thereof and extends in a substantially horizontal direction. In this embodiment, a fastening hole 10 is formed in the upright surface portion 7 as an attachment portion that is detachably attached to the side plate 5.

In the present embodiment, the inclined guide surface portion 8 is set at an angle of about 50 degrees with respect to the bottom plate portion 9 as shown in FIGS. 5 and 6, and the lower end edge gradually increases from the front end to the rear end. It is inclined so that it approaches the standing surface 7 side. In the embodiment shown in FIG. 6, the inclination of the lower end edge of the inclined guide surface portion 8 is set such that the left and right width of the front end in the traveling direction is 80 mm and the left and right width of the rear end is 50 mm. The front end and the rear end are set at an inclination (twist) angle that is offset by 30 mm with respect to the traveling direction.

To attach the attachment 6 having the above-described configuration to the side plate 5, the tip curved surface portion 11 of the bottom plate portion 9 is directed in the traveling direction, the inclined guide surface portion 8 is directed toward the screw conveyor 3 side, and the standing surface portion 7 is provided. The outer surface of the side plate 5 contacts the inner surface of the side plate 5 and the lower end edge of the side plate 5 contacts the upper surface of the bottom plate portion 9. In this state, a bolt is inserted into the fastening hole 10 so that the tip male screw portion is attached. Tighten by screwing into the female screw hole on the side plate 5 side.

When the attachment 6 is attached to the side plate 5 in this manner, the base of the screed 4 rides on the rear end portion of the bottom plate portion 9, and the upright surface portion 7 moves in the same direction as the side plate 5 in the traveling direction of the asphalt finisher 1. As shown in FIG. 6, the lower end edge of the inclined guide surface is fixed in a state in which the front end portion is located inward (screw conveyor 3 side) and the rear end portion is located in the traveling direction. It is located outside that. When the height of the side plate 5 is adjusted, the height of the entire attachment 6 changes, so that the bottom plate portion 9 can be adjusted to the height of the paved surface.

Next, a case where the asphalt mixture is paved by the asphalt finisher 1 to which the attachment 6 is attached will be described. In this case, as shown in FIG. 7, one half of the paved surface (first lane 21) is paved by the other asphalt finisher 1a in advance, and a little later than this paving (the asphalt mixture The remaining half (second lane 22) is paved by the asphalt finisher 1b equipped with the attachment 6 (within the time difference within which the temperature does not drop).

The asphalt finisher 1b for paving later moves the left and right screeds 4 to match the width of the paving, and adjusts the position of the attachment 6 as shown in FIGS. Overlap the edge of the paved first lane 21. In the embodiment shown in FIG. 6, the tip of the inclined guide surface portion 8 is adjusted to be placed on the pavement surface of the first lane 21 at a position about 30 mm from the edge of the first lane 21.

When the asphalt finisher 1b is operated in this state, the screw conveyor 3 transfers the asphalt mixture in the hopper 2 from the transfer base end to the transfer front end side, that is, the side plate 5 and the attachment 6 side and diffuses it. At this time, the head of the asphalt mixture transferred by the screw conveyor 3 hits the standing surface 7 of the attachment 6 and is prevented from further spreading. Then, the asphalt mixture that hits the upright surface portion 7 is pressed by the asphalt mixture that is transferred later without staying on the spot, and when this pressing force is received, as shown by the arrow in FIG. The inclined guide surface portion 8 is guided by the downward inclination of the inclined guide surface portion 8 and descends to flow into the empty portion 23 which should be the second lane 22. Further, when a downward flow is generated by the inclined guide surface portion 8, the coarse aggregate that forms a part of the asphalt mixture does not float up, but is flown by the downward flow and descends to fill the empty space 23. It Therefore, it is not necessary for the operator to manually collect the coarse aggregate that has floated up in the vicinity of the side plate 5.

The asphalt mixture thus transferred and diffused by the screw conveyor 3 is compacted by the screed 4. In this case, since the asphalt mixture on the edge of the first lane 21 is not yet cooled, it easily comes into close contact with the asphalt mixture laid by the asphalt finisher 1 as shown in FIG.

Further, when the second lane 22 is paved in this way, the end portion of the asphalt mixture that is transferred and diffused by the screw conveyor 3 is determined by the position of the lower end edge of the inclined guide surface portion 8. As shown in FIG. 5, in this embodiment, the lower end edge of the inclined guide surface portion 8 is inclined with respect to the traveling direction of the asphalt finisher 1, so that the boundary line of the diffused asphalt mixture does not appear clearly. Therefore, the joint portion between the first lane 21 and the second lane 22 becomes inconspicuous, and repair work much easier than in the past can be performed.

Further, when a roller 12 having a support shaft arranged in a direction orthogonal to the traveling direction is provided at the rear end portion of the bottom plate portion 9 of the attachment 6, the asphalt finisher 1 moves forward to rotate the roller 12. Rolling can be performed, the joint can be automatically smoothed, the work of correcting the joint can be further simplified, and the burden on the operator can be reduced.

In the embodiment of the attachment 6 described above, the fastening hole 10 is formed in the upright surface portion 7 as a mounting portion for the side plate 5, but the mounting portion in the present invention is not limited to this fastening hole 10. However, any structure may be used as long as it can be detachably attached to the side plate 5. For example, a clamp fitting using a toggle mechanism may be provided as the mounting portion.

Further, in the above-described embodiment, the attachment 6 is attached to the side plate 5 provided in advance on the asphalt finisher 1 later, but the attachment 6 is formed by forming an inclined guide surface on the side plate 5 itself. A similar structure may be adopted. That is, the structure of the side plate 5 ', which is provided at the side end portion of the screed 4 of the asphalt finisher 1 and regulates the diffusion range of the mixture material transferred from the hopper 2 to the left and right by the screw conveyor 3, is shown in FIG. As shown in the drawing, an upright surface 13 that extends along the traveling direction of the asphalt finisher 1 and stands up substantially vertically, and a lower part of the upright surface 13 is inclined downward toward the transfer base end side of the screw conveyor 3. The inclined guide surface 14 is formed so that the lower end edge of the inclined guide surface 14 is inclined with respect to the traveling direction of the asphalt finisher 1, and the inclined guide surface 14 is provided in contact with the lower end edge of the inclined guide surface 14 in the horizontal direction. The bottom end surface of the inclined guide surface 14 is formed so as to gradually approach the standing surface 13 side from the front end to the rear end. A roller may be provided at the rear end portion of the bottom plate surface 15, similar to the attachment 6.

When the side plate 5 having such a configuration is provided on the asphalt finisher 1, the top of the asphalt mixture transferred by the screw conveyor 3 hits the upright surface 13 like the above-mentioned attachment 6, and the side plate 5 is further moved. Not only can it be prevented from diffusing, but the asphalt mixture that hit the upright surface 13 was pressed by the asphalt mixture that was transferred later without staying on the spot, and this pressing force was received. The asphalt mixture is guided by the inclination of the inclined guide surface 14 and descends, and due to the generation of the descending flow, the coarse aggregate is caused to descend and descend into the void 23. Therefore, it becomes unnecessary for the operator to manually collect the coarse aggregate that has floated up in the vicinity of the side plate 5. The asphalt mixture thus transferred and diffused is compacted by the screed 4.

Further, in the side plate 5, since the lower edge of the inclined guide surface 14 is inclined with respect to the traveling direction of the asphalt finisher 1, the boundary line of the diffused asphalt mixture cannot be clearly seen. Therefore, the joint portion between the edge of the preceding paved portion and the portion paved by the asphalt finisher 1 becomes inconspicuous, and a much simpler correction work than in the past can be performed. In short, it is possible to obtain the same operation and effect as when the attachment 6 is attached and paved.

The side plates 5 are provided on the left and right sides of the asphalt finisher 1. The left and right side plates 5 are only left and right, and the basic configuration is the same. In addition, even with the attachment 6 described above, the basic configuration is the same between the attachment on the right side plate 5 and the attachment on the left side plate 5, except for the left and right.

[0027]

As described above, according to the present invention, the following operational effects are obtained. According to the side plate according to claim 1 and the side plate attachment according to claim 3, the composite material transferred by the screw conveyor and hitting the side plate is pressed against the composite material transferred later without staying there. Then, the composite material that receives this pressing force is guided by the inclined guide surface or the inclination of the inclined guide surface portion and descends, and the generation of this downward flow causes the coarse aggregate to flow and descend. Therefore, it is not necessary for the worker to manually collect the coarse aggregate that has floated up in the vicinity of the side plate, and labor can be saved. Moreover, since the lower end edge of the inclined guide surface or the inclined guide surface portion is inclined with respect to the traveling direction of the asphalt finisher, the boundary line of the diffused mixture cannot be clearly seen. Therefore, the joint portion between the edge of the preceding paved portion and the portion paved afterward becomes inconspicuous, and the repair work can be far simpler than in the past, and in this respect also labor saving can be promoted. You can Further, in the side plate according to claim 2 and the side plate attachment according to claim 4, since the lower end edge of the inclined guide surface is inclined so as to gradually approach the standing surface side from the front end to the rear end, diffusion The boundary line of the mixed material is likely to be more unclear, and therefore, the work of processing the joint portion can be further simplified. Further, since the attachment of claim 5 has a bottom plate portion, it can be slippery and can travel smoothly. Further, in the attachment of claim 6, since the roller is provided on the bottom plate portion, the attachment can be moved by the roller. It can be compacted, and further labor saving can be promoted.

[Brief description of drawings]

FIG. 1 is a perspective view of an asphalt finisher.

FIG. 2 is a perspective view of a side plate attachment.

FIG. 3A is a plan view of the attachment shown in FIG.
(B) is a right side view of the attachment.

FIG. 4 is a perspective view showing a state in which the attachment is attached to a side plate.

FIG. 5 is a front view of the attachment showing the flow of the mixture.

FIG. 6 is a plan view of the attachment showing the flow of the mixture.

FIG. 7 is a plan view showing a state of paving with two asphalt finishers.

8 is a cross-sectional view of the pavement shown in FIG.

FIG. 9 is a perspective view of a side plate.

[Explanation of symbols]

 1 Asphalt Finisher 2 Hopper 3 Screw Conveyor 4 Screed 5 Side Plate 6 Attachment 7 Standing Surface 8 Sloping Guide Surface 9 Bottom Plate 10 Fixing Hole Opened for Mounting 12 Roller 13 Standing Surface 14 Sloping Guide Surface 15 Bottom Plate Surface 21 1st Lane 22 Lane 2

Claims (6)

[Scope of utility model registration request] 1. A side plate which is provided at a side end portion of a screed of an asphalt finisher and regulates a diffusion range of a mixture material transferred and diffused from a hopper to a left and right by a screw conveyor, wherein the side plate is a traveling direction of the asphalt finisher. A standing surface that extends substantially vertically and extends along a vertical direction, and is formed at the lower part of the standing surface so as to be inclined downward toward the transfer base end side of the screw conveyor, and the lower end edge is with respect to the traveling direction of the asphalt finisher. A side plate of an asphalt finisher having an inclined guide surface formed in a state of being diagonally positioned. 2. The side plate of the asphalt finisher according to claim 1, wherein the lower end edge of the inclined guide surface is inclined so as to gradually approach the standing surface side from the front end to the rear end. 3. An attachment to be attached to a side plate provided at a side end portion of a screed of an asphalt finisher, wherein the attachment is detachably attached to the side plate and extends along a traveling direction of the asphalt finisher. And an inclined guide surface portion that is formed to be inclined downward toward the transfer base end side of the screw conveyor, and that is formed in a state where the lower end edge is diagonally located with respect to the traveling direction of the asphalt finisher. Attachment for side plate of featured asphalt finisher. 4. The attachment for a side plate of an asphalt finisher according to claim 3, wherein a lower end edge of the inclined guide surface portion is inclined so as to gradually approach the side plate from the front end to the rear end. 5. The attachment for a side plate of an asphalt finisher according to claim 3, further comprising a bottom plate portion which is provided so as to be connected to a lower end edge of the inclined guide surface portion and extends in the horizontal direction. 6. The attachment for a side plate of an asphalt finisher according to claim 5, wherein a roller is provided at a rear end portion of the bottom plate portion.