JPS6131057Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a hopper device mounted on an asphalt finisher, a concrete finisher, a base paper leveling machine, and the like.

Generally, asphalt finishers that pave road surfaces are, for example, as shown in Figure 1 A and B.
The front part of the machine B is equipped with a hopper device H to which asphalt mixture M is supplied from the dump truck D, and the rear part of the machine B is equipped with a hopper device H that receives asphalt mixture M from the dump truck D. It is equipped with a screed S that spreads the material M to a predetermined width, and a screed SC that spreads the spread material M to a uniform thickness.

In the conventional hopper device H, left and right wings W, W are attached to the left and right positions of the composite material feeder F via hinges h, h arranged in parallel in the front-rear direction of the finisher, and the outer sides of the wings W, W are lifting cylinders.
As SL, SL are extended, they rotate about hinges h, h and are lifted to the left and right of the finisher, and during construction work, the inner surfaces of the wings W, W are inclined toward the mix material feeder F so that the mix material M on the inner bottom surface falls toward the mix material feeder F.

However, at this time, as shown in Fig. 1 A and B, the mixed material M tends to fall from the front opening of the hopper device H onto the road in front of the road, and the dump truck D is unable to play well with the dump truck driver. If the method of supplying the composite material from the hopper device H is not appropriate, the composite material M
If the asphalt finisher crawls up onto the fallen material M, the asphalt finisher will move up and down, worsening the levelness of the pavement. It is necessary to eliminate this during work, and the conventional hopper apparatus described above has a problem in that it is not possible to improve the efficiency of pavement construction work. Although several countermeasures have been considered for this problem, all of them have the drawbacks of complicated structures, poor maintenance, and excessive cost.

This idea was made in view of the above points.In other words, this idea has a simple structure, excellent maintainability, cost reduction, and a good mix material without spilling the mix material in front. It is an object of the present invention to provide a hopper device for a leveling machine that can improve the efficiency of pavement construction work by conveying materials and ensuring the levelness of pavement.

The hopper device of the leveling machine of this invention has hopper wings attached via hinges to the left and right positions sandwiching the feeder for conveying mixed materials, and the outside of the hopper wings is moved around each hinge by a lifting operation means. In the hopper device of a leveling machine, the hopper device rotates upwardly and slides the mixture on the hopper wing to the feeder, and each of the hinges is tilted at a predetermined angle with respect to the front and back direction of the leveling machine. The direction in which the composite materials on the hopper wing slide when the hopper wing is rotated upwardly around each hinge by the lift operation means is as follows:
It is characterized by having a configuration having a backward component of the leveling machine.

This invention will be explained below with reference to an illustrated embodiment.

Figures 2 and 3 are a plan view and a side view of a crawler-type asphalt finisher equipped with a hopper device according to this invention, and the front part of the machine body 1 is loaded with asphalt mixture M from a dump truck D. In addition to being equipped with the above-mentioned hopper device 2 to be supplied, the rear of the machine body 1 is equipped with a screw 3 for scattering the mixed material M to a predetermined width and a screed 4 for spreading the spread material M to a uniform thickness. ing. A material feeder 5 is provided from the bottom of the hopper device 2 through the inside of the machine body 1 to the screw 3 to feed the material M supplied into the hopper device 2 to the screw 3 side (in the direction of the arrow in FIG. 2). There is.

Next, to explain the hopper device 2, as shown in FIGS. 2 and 4 A and B, the material feeder 5 is
Left and right hopper wings 8 and 9 are attached via hinges 6 and 7 to the left and right positions sandwiching the.
The hinges 6 and 7 are each disposed obliquely in a V-shape at a predetermined angle θ with respect to the front-rear direction of the asphalt finisher, and the front ends of the hinges 6 and 7 are close to each other. In addition, as shown in FIG. 4A and B, the outer surfaces of the hopper wings 8 and 9 and the chassis 1
0 are provided with cylinders 11 and 12 for raising the hopper wings 8 and 9, and the extension of the cylinders 11 and 12 causes the outside of the hopper wings 8 and 9 to move around the hinges 6 and 7. In other words, the inner bottom surfaces 8a and 9a on which the composite material M is loaded rotate upward around the rotational fulcrum axes L ₁ -L ₁ and L ₂ -L ₂ .
It is designed so that it can be tilted diagonally backward.

Note that receiving members 13, 13 for receiving rear tires T, T of the dump truck D are provided on the front side of the chassis 10.

Next, the operation of the above configuration will be explained.

A dump truck D is placed in front of the asphalt finisher so that the rear tires T and T are received by the receiving members 13, 13, and while driving forward on the asphalt finisher and pushing the dump truck D, the hopper device is removed from the dump truck D. 2 receives the supply of composite material M. The mixture feeder 5 has already been operated, and the supplied mixture M is gradually fed from the center to the screw 3 side by the mixture feeder 5, and after being spread by the screw 3 in a predetermined spreading width, it is spread by the screed 4. Spread it to an even thickness. Then, the cylinders 11 and 12 are operated to extend, and the hopper wings 8 and 9 are rotated around the rotation fulcrum axes L ₁ -L ₁ , L ₂ -L ₂
The composite material M on the hopper wings 8 and 9, which are sequentially supplied by rotating upward around , is slid down in the sliding direction D _S shown in FIG. 4A, that is, with the backward component D _B and the lateral component _D It slides down in the direction of synthesis and falls onto the composite material feeder 5, and is sent to the screw 3 and screed 4 side by the composite material feeder 5, and is spread to a uniform thickness.

However, hopper wings 8 and 9 tend to remain.
The upper composite material M can be slid backward toward the composite material feeder 5 by rotating the hopper wings 8, 9 upward and tilting the inner bottom surfaces 8a, 9a of the hopper wings 8, 9 diagonally backward. Because you can
When the hopper wings 8, 9 are rotated upwardly, there is no fear that the mixture M on the hopper wings 8, 9 will fall onto the road surface in front of the hopper device 2. In addition, the operation timings of the asphalt finisher and the dump truck D do not match, and the tires T, T of the dump truck D come off from the receiving members 13, 13, making it impossible to properly supply the mixture from the dump truck D to the hopper device 2 side. Even if the composite material M is supplied to the front side of the hopper wings 8, 9, the inner bottom surfaces 8a, 9a of the hopper wings 8, 9 can be tilted obliquely backward as described above, so that the hopper device 2
The entire amount of the supplied composite material M can be sent to the screw 3 side without the composite material M falling in front of the screw.

Therefore, during paving work, the mix M falls onto the road surface in front of the hopper device 2, and the asphalt finisher's crawler rides on it, preventing the finisher from moving up and down. Evenness can be ensured, that is, the composite material M can be spread to a uniform thickness.

The above-mentioned embodiment has been described with reference to the case where the hopper device of this invention is mounted on an asphalt finisher, but it goes without saying that the hopper device of this invention can also be mounted on a concrete finisher or base paver, which are used as a leveling machine.

As explained above, according to this invention, hopper wings are attached via hinges to the left and right positions sandwiching the feeder for conveying mixed materials, and the hinges are attached diagonally at a predetermined angle with respect to the front and rear direction of the leveling machine. The hopper wing is arranged so that it can be rotated upwardly around the hinge by a cylinder serving as a lifting operation means, and the direction in which the composite material on the hopper wing slides has a backward component of the leveling machine. Compared to conventionally proposed hopper devices with complex structures, the hopper has a simple structure that is superior in maintenance and reduces costs.When the hopper wing is raised, the material on the hopper wing always slides diagonally backward toward the feeder. As a result, the mixture will not fall in front of the hopper device, and even if the work timing between the leveling machine and the vehicle supplying the mixture cannot be timed properly, the mixture will not fall in front of the hopper device. Since it prevents materials from falling, it has the effect of improving the efficiency of pavement construction work by ensuring the efficiency of transporting materials and the levelness of the pavement.

[Brief explanation of drawings]

1A and 1B are a plan view and a side view of an asphalt finisher equipped with a conventional hopper device, and FIGS. 2 and 3 are an asphalt finisher equipped with an embodiment of the hopper device according to the present invention. A plan view and a side view of the finisher and FIGS. 4A and 4B are explanatory views of the operation of the hopper device. 1... Body of asphalt finisher as a leveling machine, 2... Hopper device, 3... Screw, 4... Screed, 5... Mixed material feeder,
6, 7... Hinge, 8, 9... Left and right hopper wings, 11, 12... Cylinder as a lifting operation means, M... Compound material, L ₁ -L ₁ , L ₂ -L ₂ ... Rotation of hopper wings fulcrum axis.

Claims (1)

[Scope of utility model registration request] A hopper wing is attached via a hinge to the left and right positions sandwiching a feeder for conveying mixed materials, and the outer side of the hopper wing is rotated upwardly around each hinge using a lifting operation means to lift the mixed material on the hopper wing. In the hopper device of the leveling machine, each of the hinges is arranged diagonally at a predetermined angle with respect to the front and back direction of the leveling machine, and each hinge is moved by a lifting operation means. A hopper device for a leveling machine, characterized in that the direction in which mixed materials slide down on the hopper wing when the hopper wing is upwardly rotated at the center has a backward component of the leveling machine.