JP4183152B2 - Chipping material spreader - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chipping material spraying device that self-propels to maintain and repair asphalt pavement and sprays a chipping material on an existing pavement surface.
[0002]
[Prior art]
When a paving body of asphalt pavement ages and troubles in vehicle traffic, overlay and cutting overlay methods are applied as maintenance and repair methods. However, if such a construction method is carried out without properly treating the cracks generated on the existing pavement surface or cutting road surface, cracks (reflection cracks) often occur at a relatively early stage.
[0003]
Conventionally, a layered construction method has been constructed as an effective construction method for suppressing the occurrence of such reflection cracks. In this method, stress is applied by alternately applying modified asphalt, that is, heated high-rubberized asphalt and chipping material pre-coated with straight asphalt, between the existing pavement surface where cracks have occurred and the overlay layer of the new asphalt mixture. By providing 1 to 3 relaxation layers, reflection cracks are suppressed.
[0004]
In this construction method, a predetermined amount of heated high-rubber asphalt, which is an emulsion, is first sprayed on an existing pavement surface (in some cases, a cut road surface). Next, a predetermined amount of chipping material (aggregate) pre-coated with straight asphalt is sprayed at a predetermined temperature. Thereafter, initial rolling is performed with a Macadam roller (10t class), and secondary rolling is performed with a tire roller (15t class). When rolling is completed, the floating stones are removed with a load sweeper. And when constructing in 2 layers or 3 layers, it constructs by repeating this process.
[0005]
FIG. 5 shows the knitting of a vehicle for executing this construction method. First, liquid asphalt is sprayed by the distributor 7, and then the chipping material is sprayed by the chip spreader 6 which is a chipping material spraying device. The tip spreader 6 is supplied with a chipping material from behind the tip spreader 6 by the dump truck 2. Then, the chipping material is rolled by the road roller 3 and the tire roller 4, and if necessary, floating stones are removed by the sweeper 5 behind the chipping material.
[0006]
However, in the construction by these conventional vehicle organization,
(1) Since the emulsion must be sprayed every several tens of meters, the distributor 7 is restrained for a long time.
(2) The dump truck 2 must be disposed behind the chipping material spraying device (chip spreader 6), and the dump truck 2 must be turned in the direction opposite to the construction direction. Such a change of direction of the dump truck 2 is difficult in the construction of one-lane regulation on the highway. In addition, the dump truck 2 that runs backwards sprinkles the chipping material and leaves a bag.
(3) A plurality of construction vehicles including the distributor 7 and the chip spreader 6 are required.
Have the following problems.
[0007]
[Problems to be solved by the invention]
Accordingly, the present invention addresses the above-described problems, provides a chipping material spraying device that can perform liquid asphalt spraying and chipping material spraying with a single device, and makes all the vehicles to be constructed have the same traveling direction. It aims at providing the chipping material spraying device which can be knitted to.
[0008]
[Means for Solving the Problems]
According to the present invention, the liquid asphalt tank 12 for storing the liquid asphalt L and the chipping material hopper 21 for introducing the chipping material are provided on the frame 11 having the wheels 26, and the chipping material C is sprayed on the pavement surface by self-propelling. In the chipping material spraying device, the liquid asphalt tank 12 is provided on both sides of the frame 11, an engine 27 is mounted between the liquid asphalt tanks 12, a chipping material charge hopper 23 is provided behind the frame 11, and chipping is performed. From the material hopper 21, a conveyor 25 that drops the chipping material C and drops the chipping material C onto the chipping material charge hopper 23 is installed obliquely ascending between the left and right liquid asphalt tanks 12. Provided below the chipping material charge hopper 23. A liquid asphalt spray 13 for spraying liquid asphalt L is provided between the liquid asphalt tank 12 in front of the rotary feeder 22 for spraying the chipping material C, and a single line is provided from the liquid asphalt tank 12 via the strainer 15. The liquid asphalt is sent to the liquid asphalt spray 13 by a pump unit 14 by piping, and the liquid asphalt tank 12 is provided with a heater 16.
[0009]
According to the present invention, the liquid asphalt in the liquid asphalt tank is sprayed from the liquid asphalt spray to the pavement surface, and the chipping material is sprayed from the feeder behind the liquid asphalt spray. The chipping material is supplied to the front chipping material hopper by a dump truck, for example, and conveyed to a feeder by a conveyor. The liquid asphalt spraying and the chipping material spraying can be performed almost simultaneously and with the spraying widths matched. In the present specification, liquid asphalt means asphalt or an emulsion obtained by emulsifying asphalt.
[0010]
Therefore, spraying of liquid asphalt and spraying of chipping material can be performed with one chipping material spraying device, and material supply is performed from the front of the chipping material spraying device, so all vehicles to be constructed are knitted in the same traveling direction. can do.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3, a frame 11 having traveling wheels 26 and 26 is provided with emulsion tanks 12 and 12 for storing liquid asphalt, that is, emulsion L, on both sides in the lateral direction of traveling, and an engine 27 is mounted therebetween. ing. A tipping material hopper 21 into which the chipping material C is charged is provided in front of the tank 12 in the traveling direction, and a chipping material charge hopper 23 is provided in the rear. The chipping material C is sprayed below the charge hopper 23. A rotary feeder 22 is provided.
[0012]
An emulsion spray 13 for dispersing the emulsion L is provided in front of the rotary feeder 22 and between the emulsion tank 12. The emulsion spray 13 is configured so that the left and right emulsion tanks 12, 12 are combined into one pipe via the strainers 15, 15, and the emulsion L is supplied by the emulsion pump unit 14.
[0013]
A conveyor 25 is provided from the front chipping material hopper 21 so as to rise obliquely between the left and right emulsion tanks 12 and 12 and drop the chipping material C from the chipping material charge hopper 23.
A chipping material transverse feed screw 24 extending in the direction perpendicular to the traveling direction is provided in the chipping material charge hopper 23, and is configured to level the chipping material C conveyed by the conveyor 25 in the left-right direction and supply it to the feeder 22. ing.
[0014]
Reference numeral 16 denotes a heater provided in the emulsion tank 12 for heating the emulsion L to a predetermined temperature, and may be either an electric heater or a burner. Reference numeral 28 denotes a driver seat provided on the emulsion tank 12.
[0015]
FIG. 4 shows a knitting of a construction vehicle including a spray and chip spreader 1 which is a chipping material spraying device according to the present invention.
The tipping material hopper of the spray and chip spreader 1 is supplied with the chipping material from the dump truck 2 and is conveyed to the feeder by the conveyor and dispersed. In front of the feeder, an emulsion is dispersed by an emulsion spray, and the emulsion and the chipping material are dispersed almost simultaneously, and the spreading width can be matched.
The subsequent rolling pressure by the load roller 3 and the tire roller 4 and the removal of the floating stone by the sweeper 5 when necessary are the same as in FIG.
[0016]
【The invention's effect】
The present invention is configured as described above, and the effects thereof are as follows.
(1) Conventionally, spraying of liquid asphalt and chipping material, which has been performed by a distributor and a chip spreader, can be performed by a single chipping material spraying device, and a distributor is not necessary.
(2) Since the liquid asphalt and the chipping material are sprayed by one unit, they can be sprayed almost simultaneously, and the spraying widths can be matched.
(3) Materials can be delivered in the same way as conventional asphalt finishers.
(4) All the vehicles to be constructed are knitted in the same traveling direction, and there is no problem of direction change, and construction can be performed even in one-lane regulation. Further, since the spraying position is behind the dump truck for supplying the material, no wrinkles are generated on the sprayed.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of the present invention.
FIG. 2 is a plan view of FIG.
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a diagram showing a vehicle organization of construction using the chipping material spraying device of the present invention.
FIG. 5 is a diagram showing knitting of a vehicle used for conventional construction.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Spray and chip spreader 2 ... Dump truck 3 ... Road roller 4 ... Tire roller 5 ... Sweeper 6 ... Chip spreader 7 ... Distributor 11 ... Frame 12 ... Emulsion tank 13 Emulsion spray 14 Pump unit 16 Heater 21 Chipping material hopper 22 Feeder 23 Charge hopper 25 Conveyor 26 Wheel 27 ···engine

Claims (1)

  A frame (11) having wheels (26) is provided with a liquid asphalt tank (12) for storing liquid asphalt (L) and a chipping material hopper (21) for introducing chipping material, and is self-propelled to provide a chipping material on the pavement surface. In the chipping material spraying device for spraying (C), the liquid asphalt tank (12) is provided on both sides of the frame (11), and an engine (27) is mounted between the liquid asphalt tanks (12). A chipping material charge hopper (23) is provided behind (11), and the chipping material (C) is dropped from the chipping material hopper (21) to put the chipping material (C) on the chipping material charge hopper (23). The conveyor (25) to be dropped is installed obliquely rising between the left and right liquid asphalt tanks (12). The liquid asphalt (L) is sprayed between the liquid asphalt tank (12) in front of the rotary feeder (22) disposed below the chipping material charge hopper (23) and spraying the chipping material (C). The liquid asphalt spray (13) is provided, and the liquid asphalt is sent from the liquid asphalt tank (12) through the strainer (15) to the liquid asphalt spray (13) by a pump unit (14) through a single pipe. A chipping material spraying device, wherein the liquid asphalt tank (12) is provided with a heater (16).

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