JPS6126409Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention provides a auxiliary plate at the rear of the main screed of the asphalt finisher so that it can move forward and backward toward the outside of the vehicle body during road paving. The present invention relates to an asphalt finisher that makes it possible to spread asphalt mixture evenly, and to adjust the length of advance and retreat, overall height, inclination, etc. of the auxiliary plate according to external conditions.

[Conventional technology]

Conventionally, when constructing asphalt pavement, the asphalt mixture was put into the hopper of an asphalt finisher and discharged onto the roadbed by a bar feeder, and then a screw spreader was used to pave it to a uniform thickness to the specified pavement width. Measures to do so are normally implemented. However, the road environment and surrounding conditions are not constant, and construction work must be done to avoid contact with water catchments, utility poles, various structures, etc. that exist on the side of the road, so there are many difficulties in the work and the need for additional operation methods. It is necessary. For example, an attachment for leveling the road side edge is prepared, and if necessary, it is installed protruding from the side of the finisher body to perform paving work, and if it is no longer needed, the work is temporarily stopped and the attachment is removed. There are ways to remove it and remove it.

[Problem that the invention attempts to solve]

The work performed by the conventional apparatus described above is troublesome and at the same time has the disadvantage that it causes a decrease in work efficiency due to interruption of continuous work, and requires more labor than necessary.

[Means for solving problems]

The present invention was developed in view of the above, and it solves the drawbacks of road paving using conventional asphalt finishers, improves workability, and improves workability.
The purpose is to improve efficiency and reduce costs, and as a specific measure, an outer cylinder is fixed horizontally on top of a connecting plate installed at the rear end of the main screed of an asphalt finisher. Then, the inner cylinder is fitted and fixed in the outer cylinder so as to be able to move forward and backward in the outer direction, and a hanging member is suspended from the outer end of the inner cylinder so that the vertical height can be adjusted freely, and a rail holding member is installed at the lower part of the connecting plate. The rail is attached to the rail holding member so that it can be adjusted up and down using an adjustment tool, and is fixed horizontally and parallel to the main screed. An asphalt with an auxiliary plate, characterized in that the auxiliary plate is slidably attached to the auxiliary plate, the outer end of the auxiliary plate is pivoted to the hanging member, and a presser arm is provided on the rear surface of the auxiliary plate. This constitutes the finisher.

[Effect]

The auxiliary plate is arranged parallel to the rear of the main screed, and its inner end, which is inside the car body, is attached to the rail via a mating element.The auxiliary plate can slide along the rail. It can move forward and backward along the main screed towards the outside of the car body.

However, the rail supporting the inner side of the auxiliary plate of the lever can be adjusted up and down with respect to the connecting plate via an adjustment tool.

The inner cylinder is fitted and supported by the outer cylinder and can move forward and backward toward the outside of the vehicle body. A hanging member suspends an auxiliary plate from the outer end of the inner cylinder so that the height can be adjusted freely, so as the inner cylinder advances and retreats, the auxiliary plate moves forward and backward while sliding its mating part on the rail, allowing the main screed to move forward and backward. The outer edge of the auxiliary plate, which can be extended outward from the outer edge and protrudes from the outer edge of the main screed, has the same effect as the main screed.

However, since the road surface slopes toward the roadside edge, when the vehicle body is in the center of the road and the auxiliary plate is extended toward the roadside edge, adjust the adjustment tool on the inner cylinder to match the slope of the road surface. The outer end of the auxiliary plate is moved up and down, and the height of the rail is adjusted by adjusting the adjustment tool on the connecting plate to tilt the auxiliary plate in accordance with the slope of the road surface.

The presser arm is for preventing the auxiliary plate from swinging backward.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 shows a schematic plan view of an asphalt finisher to which the present invention is applied. 1 is a hopper, 2 is a feeder, and 3 is a screw spreader. It serves to pave the material to a uniform thickness using the main screed 4. Furthermore, an auxiliary plate 5 and a presser arm 6 that presses and supports the auxiliary plate are attached to the rear of the main screed 4, so that the width is increased as indicated by W' with respect to the leveling width W obtained by only the main screed 4. be done. Although the first illustrated example shows a case where the auxiliary plate 5 extends only on one side of the asphalt finisher body, it goes without saying that embodiments in which it extends on both sides of the asphalt finisher body are also included. .

FIG. 2 is a perspective view showing the auxiliary plate 5 slidably attached to the main screed 4, and FIG. 3 is a sectional view taken along the line AA. 7
is a connecting plate that is fixed upright at one end of the main screed 4 using set screws 8, 8', and above the connecting plate, side plates 9, 9 are provided so that the planar cross section is approximately U-shaped, and a sliding plate is installed inside the connecting plate. The notch plate 10 as a moving member is inserted into the connecting plate 7, and an adjustment tool 15 consisting of an adjusting bolt 11, a nut 12, a stator 13, and a tightening screw 14 screwed in from above the connecting plate 7 is used as the sliding member. Cutout plate 10
It constitutes a mechanism that can move up and down and tighten freely. Reference numeral 16 denotes an outer cylinder that is fixed integrally with the side plate 9 above the connecting plate 7, and an inner cylinder 17 is fitted into the outer cylinder so that it can be inserted and removed freely and can be tightened with set screws 19 and 20. It's inserted. Note that the inner cylinder 17 may be configured to have a plurality of stages having an arbitrary number of stages. The side plates, adjustment tools, sliding members, etc. have the same structure and are installed in two places as shown in the figure to stabilize workability and maintain strength when simultaneously constructing on both sides of the asphalt finisher as described later. It contributes to

The inner cylinder 17 is connected to the outer cylinder 16 as shown by the dotted line in FIG.
It is divided inside the asphalt finisher body and is configured to be able to protrude independently from both sides of the asphalt finisher body. However, instead of having the divided structure as shown in the drawings, it is also possible to form it as a single member and construct it by pulling it out from both sides separately.

On the other hand, a rail holding member 23 is superimposed on the lower end of the cutout plate 10 provided as the sliding member, and is tightened with a bolt 24, and one side of the rail 25 is fixed by welding. The rail 25 is horizontally mounted parallel to the main screed 4 and has a groove 26 formed on the opposite side of the fixing surface, and one end of a fitting 27 that fits and slides into the groove 26. Attach the inner edge of the auxiliary plate 5 to the auxiliary plate 5. That is, the auxiliary plate 5
The structure is configured to allow sliding movement in the direction of the arrow X. The legs of the auxiliary plate 5 include
A chute 28 having a smooth bottom is formed.

A bolt-shaped hanging member 29 is provided at the outer end of the inner cylinder 17 facing the outside of the vehicle body so that it can be tightened and loosened in the vertical direction by a bolt retainer 31 attached to a fixing nut 30. The outer end of the auxiliary plate 5 is pivotally fixed to the lower end of the lower member using a set screw 32.

Furthermore, a step board 40 is installed on the upper part of the auxiliary plate 5, and a hollow body 4 is formed by bending the rear end of the step board.
A rod 43 protruding from one side of 1, 42 is provided so as to be tightenable with a set screw 44. The protruding rod 43 forms a right-angled bent portion forward in the middle to serve as a presser arm 6, and has the function of pressing and holding the auxiliary plate 5 from the back side. Note that a slight gap is provided between the tread plate 40 and the upper end of the auxiliary plate 5 so as not to interfere with the vertical movement of the auxiliary plate.
It goes without saying that the arrows in both directions in each figure indicate the direction in which each component can move freely.

The side plates 33 are for preventing asphalt from protruding outside the outer edge of the auxiliary plate 5, and although they do not need to be used, it may be better to have them warm. Second
As shown in FIG. 4, the side plate 33 is a rectangular plate with its wide side facing vertically, and is arranged orthogonally with its rear end touching the outer end surface of the auxiliary plate 5. The locking tool 34 is locked in the stopped groove 33A portion and tightly fixed to the outer end surface of the auxiliary plate 5.

Further, a tubular sliding part 35 is formed at the front end of the side plate 33 with the pipe hole facing vertically, and the guide rod 3 is inserted into this part.
6 is slidably fitted. A support plate 36A is fixed to the upper end of the guide rod 36 by welding, and an eye bolt 36B is screwed into the eye bolt 36B.
A shaft bolt 36D is inserted into the guide rod 36C and pivoted to the tip of a support rod 37, so that the guide rod 36 is vertically mounted on the support rod 37 that maintains the guide rod horizontally, and its lower end is configured to be swingable toward the vehicle body. There is. This is so that when the outer end of the auxiliary plate 5 is tilted along the road surface, the side plate 33 can also be tilted together.

The support rod 37 is slidably fitted and supported within the fixed support tube 38, and the fixed support tube 38 is fixed by any means at an arbitrary position 39 above the main screed of the asphalt finisher body. .

The present invention relates to an asphalt finisher equipped with an auxiliary plate having the configuration described above, and the working aspects thereof are as follows.
First, during leveling work using the main screed 4, if it becomes necessary to perform paving work on the side of the road, first, guide the asphalt finisher from an arbitrary position 39 on the asphalt finisher body above the main screed 4 via the support rod 37. A set screw 1 for pulling out the rod 36 and the side plate 33 attached thereto and fixing the outer cylinder 16 and the inner cylinder 17.
9 and 20 as appropriate to pull out the tip of the inner cylinder 17 to the desired position, and pull out the auxiliary plate 5 in the same way along the rail 25, then connect the inner cylinder 17 and the auxiliary plate 5 with the hanging member 29. and locking tool 3
4 locks the auxiliary plate 5 and the side plate 33. The above-mentioned coupling operation is for integrating the inner cylinder 17, the auxiliary plate 5, and the side plate 33.
If you store them in a connected state in advance, it will be easier to set them up.

When using on a flat place, loosen the bolt retainer 31 of the hanging member 29 and move the hanging member 29 up and down so that the bottom surface of the shoe 28 at the lower end of the auxiliary plate 5 is the same as the bottom surface of the main screed 4. Adjust to high.

Next, rotate the adjustment bolt 11 in the adjustment tool 15 to adjust the height of the stator 13 and the tightening screw 14,
The bottom surface of the shoe 28 at the lower end of the auxiliary plate 5 is adjusted to be in a straight line with the bottom surface of the main screed 4.

However, since the paved road is formed in an arc shape with a high center width, it is inconvenient to simply adjust the height of the hanging member 29 in order to make the main screed 4 and the auxiliary plate 5 follow the arc shape of the road surface. occurs. In other words, when the mounting position of the adjusting tool 15 is inward from the side edge of the main screed 4, the outer hanging bolt 2 is rotated around the position of the adjusting tool 15.
When the outer end of the auxiliary plate 5 is lowered by lowering the screed 9, the intermediate lower end surface of the auxiliary plate 5 will be lower than the outer lower end 4A surface of the main screed 4, and vice versa.

The auxiliary plate 5 is for supplementing the length of the main screed 4 and at the same time for making it more suitable for the lateral slope of the road surface. 5 needs to be at the same level as the lower surface, and in order to solve this problem, an adjuster 15 is used in combination. Therefore, in order to match the set inclination of the road surface, first adjust the height of the hanging member 29 as described above (or the front is fine), then adjust the height of the adjustment bolt 11 in the adjustment tool 15 to adjust the height of the main screed. 4 and the auxiliary plate 5 at the joint portion 4A are adjusted so that the heights of the lower surfaces thereof are the same.

That is, as shown in FIG.
is maintained horizontally, and the road side end is sloped downward at approximately 15 degrees with respect to this lower surface extension line L, the auxiliary plate 5 is adjusted to match this slope D.
Even if the lower outer end 5A of the auxiliary plate 5 is lowered by lowering the hanging member 29, the lower surface 5 of the inner end of the auxiliary plate 5
If B is at the same height as the lower surface line L of the main screed 4, the auxiliary plate lower surface 5C at the outer lower end 4A of the main screed 4 will be located below the lower surface line L, causing a large resistance to the auxiliary plate 5, which is inconvenient. It is. Therefore, as shown in FIG. 5, in order to make the outer lower end 4A of the main screed 4 and the lower end 5C of the auxiliary plate at that position the same height, it is necessary to make the auxiliary plate inner lower end 5B higher than the lower surface L of the main screed. In order to adjust the height, the height of the rail 25 is adjusted via the adjustment tool 15.

Next, the protruding rod 43 is pulled out from inside the hollow body 42 of the footboard 40, and the presser arm 6 is fixed using the set screw 44 while being pressed from the back side of the auxiliary plate.
The setup is complete.

When performing paving work at the edge of the road in the above-mentioned position, a worker rides on the top of the main screed or on the treadle and continues the work while assessing the road conditions, rotating the set screw and providing assistance as necessary. Operations such as expansion and contraction of the plate can be carried out as desired. The side plates 33 function effectively to prevent leakage of the asphalt mixture.

By implementing the present invention, various effects described below will be exhibited. In other words, even if the road conditions to be paved are not constant and the width increases or decreases or various obstacles are present, there is no need to replace the attachment each time, which improves workability and improves efficiency. can. This will result in a reduction in the number of workers and labor savings associated with the above.

The auxiliary plate 5 supplements the length of the main screed 4 and has the effect of making paving more efficient with a width that matches the road conditions, and when used in combination with a hanging member and an adjustment device, it can adjust the arcuate slope in the width direction of the road surface. The angle can be adjusted appropriately and the composite material can be laid efficiently.

Since the auxiliary plate 5 is integrally connected to the main screed 4 via the connecting plate 7, vibrations of the main screed that occur during leveling are transmitted to the auxiliary plate 5.
By propagating the asphalt mixture to the leg shoe, the asphalt mixture can be laid efficiently.

In addition, if this invention is installed symmetrically on both sides of the asphalt finisher body, paving work at both ends of the road can be carried out at the same time, but if it is installed only on one side of the asphalt finisher. Of course, it is also possible to do so, and any case is included within the scope of the present invention.

〔effect〕

The present invention has the following excellent effects.

(a) Since the auxiliary plate can be moved forward and backward toward the outside of the vehicle body at the rear of the main screed, the screed action can be easily widened by extending the auxiliary plate.

(b) Since the auxiliary plate can be tilted to match the slope of the road surface while extending outward,
You can make rational work more efficient.

(C) The height of the auxiliary plate can be adjusted at both the inner and outer ends, so the middle part of the lower surface of the auxiliary plate,
In particular, the height can be adjusted to be the same as the lower surface of the outer end of the main screed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention.
The figure is a schematic plan view of the asphalt finisher used in the present invention, Figure 2 is a perspective view showing the attachment state of the auxiliary plate, and Figure 3 is A-A in Figure 2.
FIG. 4 is a cross-sectional view, FIG. 4 is a rear view showing the connection relationship between the support rod and the guide rod for the side plate, and FIG. 5 is a rear view showing the auxiliary plate in an inclined state. 1...Hopper, 2...Feeding device, 3...Screen spreader, 4...Main screed, 4A...
outer lower end, 5...auxiliary plate, 5A...outer lower end, 5B...inner lower end, 5C...junction point,
6... Presser arm, 7... Connection plate, 10... Notch plate, 11... Adjustment bolt, 13... Stator, 14
... Tightening screw, 15 ... Adjustment tool, 16 ... Outer cylinder,
17... Inner cylinder, 23... Rail holding member, 25...
...Rail, 26...Groove, 27...Mating element, 29
... Hanging member, 30 ... Fixing nut, 31 ... Bolt holder, 33 ... Side plate, 33A ... Stop groove, 34
... Locking tool, 36 ... Guide rod, 36A ... Support plate, 36B ... Eye bolt, 36C ... Eye hole, 3
6D...Axis bolt, 37...Support rod, 38...Fixed support tube, 40...Treadboard, 43...Protruding rod.

Claims (1)

[Scope of utility model registration request] An outer cylinder is fixed horizontally on the upper part of the connecting plate installed at the rear end of the main screed of the asphalt finisher, and the inner cylinder is fitted into the outer cylinder so as to be movable outward and retractable. A hanging member is hung from the end so that the height can be adjusted vertically, and a rail holding member is attached to the lower part of the connecting plate so that it can be adjusted vertically using an adjustment device. The rail is fixed, and the inner end of an auxiliary plate arranged parallel to the rear of the main screed is slidably attached to the rail via a fitting, and the outer end of the auxiliary plate is pivoted to the hanging member. An asphalt finisher equipped with an auxiliary plate, characterized in that a presser arm is arranged on the rear surface of the auxiliary plate.