JPH0720163Y2 - End plate support device for holding pavement materials - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support device for an end plate which suppresses lateral movement of paving materials made of asphalt mixture when paving roads, parking lots, tennis courts and the like.

[0002]

2. Description of the Related Art Conventionally, for example, when asphalt paving a road, the asphalt mixture is spread and compacted by using an asphalt finisher, and the spread and compacted asphalt mixture is further compacted by a road roller or the like. ing. In this case, the pavement material spread on the lower layer is placed on the side of the screed for leveling / compaction for leveling / compacting the screed, and the pavement material is abutted against the lower layer so that the pavement material is An end plate is provided to suppress the lateral movement of the plate.

By the way, conventionally, the end plate is attached, for example, so as to be movable in a substantially vertical direction toward a lower layer, and the movable end plate is hung by a chain or the like, and is vertically moved by an adjusting screw or the like. An adjustable support structure is used.

[0004]

However, the conventional support structure for the end plate has the following problems. That is, in the case where the end plate is simply hung by a chain or the like, the end plate 1 is not stabilized against the unevenness of the roadbed A as the lower layer as shown in FIG. The material 2 cannot be pressed securely.

Further, in the case where the vertical position of the end plate is adjustably supported by an adjusting screw or the like, the vertical position of the end plate is changed in response to a change in the thickness of the paving material.
It is necessary to make fine adjustments with the adjustment screw or the like, and the adjustment work is troublesome. Furthermore, as a result of the troublesome adjustment, it tends to be used as it is without adjustment. In this case, as shown in FIG. 7, the end plate 1 does not hit the roadbed A, and the pavement material 2 is securely pressed. However, since the pavement material 2 moves to the side and protrudes and spills out, it is necessary to manually clean the pavement material 2 after that, which requires a great deal of labor for subsequent processing.

Therefore, the present invention has been made in view of the above, and the end plate is stabilized against the unevenness of the lower layer so that it can be reliably applied to the lower layer, and the change in the thickness of the paving material and the lower layer An object of the present invention is to provide an end plate supporting device that does not need to finely adjust the vertical position of the end plate with respect to unevenness and can always reliably press the paving material.

[0007]

Therefore, the supporting device for the end plate for holding the pavement material according to the present invention is provided with a screed side for leveling and compaction for leveling and compacting the pavement material spread on the lower layer. Is a support device for an end plate that is disposed to extend in the advancing direction of the screed and that suppresses lateral movement by pressing the pavement material by abutting the lower layer, wherein one end portion is provided at the screed side portion. And a connecting device that connects the supporting arm and the end plate to each other, and the other end of the connecting arm is connected to the supporting arm. An outer cylinder fixed to the arm and extending in the longitudinal direction, an inner cylinder slidably arranged in the outer cylinder, a movable cylinder slidably arranged in the inner cylinder, and the outer cylinder. Set the upper end and the upper end of the inner cylinder above and below the movable cylinder with respect to the outer cylinder. A coupling means for connecting the movable cylinder so as to be adjustable, a regulating means for regulating the downward movement of the movable cylinder with respect to the inner cylinder to a predetermined amount, and an elastic biasing of the movable cylinder downward with respect to the inner cylinder. And a lower end portion of the movable cylinder is rotatably connected to a lower end portion of the end plate.

[0008]

In this case, the conveyed asphalt mixture is spread and compacted by the screed. At this time, the end plates prevent the asphalt mixture from escaping outward. In such a configuration, the vertical position of the end plate is adjusted by changing the vertical position of the inner cylinder with respect to the outer cylinder by adjusting the connecting means. In this way, if the vertical position of the end plate is roughly adjusted according to the thickness of the pavement material, the movable cylinder will move up and down following the lower layer. For example, the vertical position of the end plate does not need to be finely adjusted with the adjusting screw or the like each time, and the adjustment work is simple, and the end plate always touches the roadbed, and the paving material can be pressed securely. it can.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. 4 and 5 show the construction of an asphalt finisher to which the pressurizing device of the present invention is applied. In front of the tractor 7 as a self-propelled vehicle, a hopper 9 for storing the asphalt mixture 8 and a hopper gate. 10 and
A feeder conveyor 11 is provided for each. Further, behind the tractor 7, there is a screw conveyor 12 and a screed 1 for spreading and compacting for compacting the asphalt mixture 8.
3, an end plate 14, and a step 15 are provided respectively. Further, leveling arms 16 are attached to both sides of the tractor via pivots 17 so as to freely swing in a substantially vertical plane.

The leveling / compacting screed 13 is swingably supported and is vibrated by a vibrating device (not shown). The end plate 14 is disposed on the side of the screed 13 for leveling / compacting so as to extend in the traveling direction of the screed 13, and comes into contact with the roadbed as a lower layer to press the paving material and move laterally. And is supported by a supporting device described below.

That is, in FIG. 1 to FIG. 3, the supporting device has a supporting arm 20 having one end fixed to the side of the screed 13 and the other end extending in the traveling direction of the screed 13, Support arm 20 and the end plate 14
And a connecting device 19 for connecting the and. The support arm 20 is composed of a long member having a substantially U-shaped cross section. One end of the support arm 20 has a screed 1
Mounting plate 2 fastened to the side of 3 by fasteners 21
The other end is horizontally extended in the traveling direction of the screed 13. In this case, the support arm 20 extends along the outer surface of the end plate 14, and its tip is inserted and arranged inside the substantially L-shaped guide member 23 fixedly attached to the outer surface of the end plate 14.

Next, the specific structure of the connecting device 19 will be described in detail. That is, the connecting device 19 includes an outer cylinder 24 fixed to the support arm 20 and extending in the longitudinal direction, an inner cylinder 25 slidably disposed in the outer cylinder 24, and an inner cylinder 25. A movable cylinder 26 slidably disposed, and a connecting means for connecting the upper end of the outer cylinder 24 and the upper end of the inner cylinder 25 so that the vertical position of the movable cylinder 26 with respect to the outer cylinder 24 can be adjusted. A restricting means for restricting a downward movement of the movable cylinder 26 with respect to the inner cylinder 25 to a predetermined amount; a spring 29 as an urging means for elastically urging the movable cylinder 26 downward with respect to the inner cylinder 25; Composed of.

The upper end surface of the outer cylinder 24 is closed by a plate member 24a to be welded, and the lower end surface is opened. The upper end surface of the inner cylinder 25 is closed by a plate member 25a to be welded, the lower end surface is opened, and an annular flange plate member 25b that horizontally projects is fixedly attached to the outer peripheral portion of the open end portion by welding. . A partition plate member 25c for partitioning the upper and lower spaces is fixedly attached to the inner side of the inner cylinder 25 by welding.

The upper end surface of the movable cylinder 26 is opened, and the lower end surface is welded and closed by a flange plate member 26a which horizontally projects. A plate member 24a on the upper end surface of the outer cylinder 24
An adjusting screw 27 having a threaded portion 27a formed on the outer peripheral surface of the lower end is rotatably supported by the. In this case, a pair of flange members 27b that sandwich the plate member 24a are fixed to the upper end of the adjusting screw 27, and the vertical movement of the adjusting screw 27 is blocked.

The male screw portion 27a of the adjusting screw 27 is
A nut 28 fixed by welding to a plate member 25a on the upper end surface of the inner cylinder 25 is screw-fitted and the plate member 2
5a is penetrated. A stopper member 27c is fixedly attached to the lower end of the adjusting screw 27. Further, the upper end portion of the adjusting screw 27 has an operation portion 27d for rotating the adjusting screw 27.
Becomes The operating portion 27d is rotated manually or by driving means such as a hydraulic motor (not shown).

Therefore, by rotating the adjusting screw 27, the screw fitting position of the adjusting screw 27 and the nut 28 is changed, and the vertical position of the inner cylinder 25 with respect to the outer cylinder 24 is changed. Such a mechanism corresponds to the above connecting means. Incidentally, FIG.
L ₂ is the vertical movement allowance of the inner cylinder 25. The spring 29 is arranged in a space formed by the space below the partition plate member 25c of the inner cylinder 25 and the space inside the movable cylinder 26,
Both ends are locked to the plate member 26a and the partition plate member 25c. Therefore, the movable cylinder 26 is urged downward by the elastic force of the spring 29 with respect to the inner cylinder 25.

In this case, the flange plate member 2 of the movable cylinder 26
Set screws 30 each having a threaded portion 30a formed on the outer peripheral surface of the upper end are fixed to the two positions of the upper end surface of 6a which are separated from each other by welding so as to extend vertically upward. The upper end portion of the set screw 30 is vertically movably penetrated into two spaced positions of the flange plate member 25b of the inner cylinder 25, and the male screw portion 30a is provided with a nut 31 provided on the upper surface of the flange plate member 25b.
Is fitted to.

Therefore, the movable cylinder 26 is always provided with the spring 29.
Is elastically urged downward by this elastic force, and the downward movement is restricted by the nut 31 abuttingly locked to the flange plate member 25b. Such a mechanism corresponds to the regulation means. Further, the movable cylinder 26 can move upward against the elastic force of the spring 29, and this movement is restricted by the flange plate member 26a abuttingly locked by the flange plate member 25b. That is, this amount of movement becomes the shrinkage allowance L _{1 of the} movable cylinder 26 with respect to the inner cylinder 25.

A support bracket 32 is fixedly attached to the lower surface of the flange plate member 26a of the movable cylinder 26. A long hole 32a that is long in the lateral direction is formed in the support bracket 32. A pair of connecting devices 19 having the above-described configuration is provided on each of both side portions of the screed 13, and the pair of connecting devices 19 are arranged on the left and right sides of the end plate 14 with a space therebetween. In this case, the outer cylinder 24 of each coupling device 19 has a groove 20 that is vertically penetrated into two spaced portions of the support arm 20.
It is fitted in a and fixed to the groove 20a by welding.

On the other hand, a support bracket 33 is fixedly attached to the upper surface of the lower end plate portion 14a protruding outward to form the lower end surface of the end plate 14, and a pin 34 is fixedly attached to this support bracket 33. Then, the support bracket 33 is inserted into the elongated hole 32a of the support bracket 32.
By inserting the pin 34 of the support bracket 32
Can rotate with respect to the support bracket 33, and the elongated hole 32a can absorb the lateral movement of the support bracket 32.

This structure corresponds to a structure in which the lower end of the movable cylinder 26 is rotatably connected to the lower end of the end plate 14. Next, the operation of the device having such a configuration will be described. The end plate 14 is brought into contact with the roadbed as a lower layer by the elastic force of the spring 29, and the screed 13 is brought into contact with the base set to the same thickness as the spread thickness of the mixture on the roadbed. Further, the asphalt mixture 8 is supplied to the hopper 9 from the carrier.

While advancing the tractor 7, the asphalt mixture 8 is dropped and supplied from the hopper 9 onto the roadbed, and the asphalt mixture 8 dropped and fed is conveyed by the screw conveyor 12 in the vehicle width direction. Next, the conveyed asphalt mixture 8 is spread and compacted by the screed 13. At this time, the end plate 14 suppresses the asphalt mixture 8 from escaping outward.

In such a structure, the end plate 14
When the adjusting screw 27 is rotated, the screw fitting position of the adjusting screw 27 and the nut 28 is changed, and the outer cylinder 24
On the other hand, by changing the vertical position of the inner cylinder 25, the vertical position is adjusted. In this way, if the vertical position of the end plate 14 is roughly adjusted according to the thickness of the paving material, the movable cylinder 26 moves up and down following the roadbed, so that the change in the thickness of the paving material and the roadbed For unevenness changes,
Since it is not necessary to finely adjust the vertical position of the end plate 14 with the adjusting screw 27 or the like each time, the adjustment work is simple, and the end plate 14 always hits the roadbed and the paving material can be reliably pressed. Therefore, since the pavement material does not move to the side and protrude, and there is no risk of spilling, there is no need for manual cleaning thereafter, and it is possible to reduce post-processing, which is advantageous in terms of labor. .

In the above embodiment, the connecting device 19
The pair of connecting devices 19 is provided on each side of the screed 13, and the pair of connecting devices 19 are provided separately on the left and right of the end plate 14. One connecting device 19 may be arranged at an intermediate portion between the left and right sides of the end plate 14.

Although the present invention has been described with reference to specific embodiments, the present invention is not limited to this, and a person skilled in the art can request a utility model registration request attached to the present invention. It should be noted that various changes and modifications can be made without departing from the scope.

[0026]

As described above, according to the present invention, the vertical position of the end plate can be adjusted by the end plate supporting device that suppresses the lateral movement of the paving material by pressing it against the lower layer. In addition, since the end plate is configured to be able to move following the lower layer, the end plate is stabilized against the unevenness of the lower layer and can be reliably applied to the lower layer, and the change in the thickness of the paving material and With respect to the unevenness of the lower layer, it is not necessary to finely adjust the vertical position of the end plate, and it is possible to reliably press the pavement material by the end plate, which is a great practical effect.

[Brief description of drawings]

FIG. 1 is a side view illustrating an embodiment of a support device for an end plate for holding a paving material according to the present invention.

[Figure 2] Plan view

FIG. 3 is a vertical sectional view of the coupling device according to the above embodiment.

FIG. 4 is a side view of an asphalt finisher to which the above embodiment is applied.

5 is a plan view of FIG.

FIG. 6 is a side view illustrating a conventional problem.

FIG. 7 is a side view illustrating a conventional problem.

[Explanation of symbols]

 13 Scattering / scrambling 14 End plate 19 Connecting device 20 Support arm 24 Outer cylinder 25 Inner cylinder 26 Movable cylinder 27 Adjusting screw 28 Nut 29 Spring 33 Support bracket 32 Support bracket 32a Oval hole 34 Pin

Claims (1)

[Scope of utility model registration request] 1. A pavement is provided on a side portion of a screed for leveling / compaction for leveling / compacting the pavement material spread on the lower layer so as to extend in the advancing direction of the screed, and abuts on the lower layer. A support device for an end plate that presses a material to suppress lateral movement, wherein a support arm has one end fixed to the screed side part and the other end extending in the advancing direction of the screed. A connecting device that connects the support arm and the end plate to each other, and the connecting device is slidable in an outer cylinder fixed to the support arm and extending in the longitudinal direction. The inner cylinder disposed in the inner cylinder, the movable cylinder slidably disposed in the inner cylinder, and the upper and lower ends of the outer cylinder and the upper end of the inner cylinder are adjustable in vertical position of the movable cylinder with respect to the outer cylinder. Connecting means for connecting the movable cylinder and the inner cylinder of the movable cylinder in the downward direction. And a biasing means for elastically biasing the movable barrel downward with respect to the inner barrel, and the lower end of the movable barrel is rotated to the lower end of the end plate. A support device for an end plate for holding a pavement material, characterized by being connected in a freely movable manner.