JP3910683B2 - Self-propelled aggregate spreader - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a self-propelled aggregate spraying device that sprays aggregate on the surface of a leveled asphalt mixture or the like in, for example, roll door asphalt pavement or rubber rolled pavement.
[0002]
[Prior art]
Conventionally, for example, in roll door asphalt pavement or rubber rolled pavement, when the aggregate is spread on the surface of the spread asphalt mixture, etc., it is spread manually or using a commercially available chip spreader mounted on the vehicle body Usually, a dedicated rolling machine (for example, a tandem roller) equipped with a spraying device is prepared and sprayed by the spraying device while running this rolling machine.
[0003]
[Problems to be solved by the invention]
However, the conventional aggregate spraying methods as described above have the following problems.
That is, the method of spraying the aggregate manually requires a great deal of labor and is difficult to spray uniformly.
[0004]
In addition, in the method of spraying using a chip spreader, it is not possible to get on this surface immediately after the asphalt mixture is spread on the structure of the truck body of a 2 to 4 ton truck temporarily mounted on the surface. After being cooled to some extent, it must be sprayed. When spraying after the surface has been cooled to some extent, a heavy compacting machine is required for the subsequent compaction, and the aggregate is pushed in at a low temperature of the asphalt mixture. There is a possibility that an early peeling phenomenon may occur due to poor adhesion.
[0005]
Furthermore, in the spraying method using a dedicated compacting machine equipped with a spraying device, quantitative uniform spraying is possible, but since the compaction is performed immediately after the aggregate spraying, the spraying amount is too short In this case, it is difficult to correct, and because the structure and the aggregate are loaded on the front part of the compaction machine, the grounding load (linear pressure) of the compaction wheel is increased, which adversely affects the pavement surface. There is a problem of affecting.
[0006]
Therefore, in view of the conventional problems as described above, for example, in roll door asphalt pavement or rubber rolled pavement, when the aggregate is spread on the surface of the spread asphalt mixture or the like, no effort is required. It is possible to spray evenly and quantitatively, it has excellent aggregate adhesion, it is easy to correct when the spraying amount is excessive and insufficient, and it does not have any adverse effect on the paved road surface. It is an object to provide a self-propelled aggregate disperser.
[0007]
[Means for Solving the Problems]
For this reason, the invention according to claim 1
A device body having a substantially rectangular shape when viewed from above ;
Aggregate spreading device that is equipped in the device body and spreads aggregate on the road surface;
A traveling device that is mounted on the apparatus body and travels the apparatus body ;
Comprising
The traveling device includes a wheel, a wheel fixing frame device in which a base end portion is attached to four corners of the device main body so as to be rotatable about a line substantially perpendicular to the road surface as an axis, and each wheel fixing frame device. attached to the tip portion, a wheel turning means for turning the substantially vertical line as the axis around each wheel relative to the road surface,
It is characterized by including.
[0008]
The invention according to claim 2
The aggregate disperser is provided at a substantially central portion of the machine body frame constituting the apparatus main body, and is divided into a plurality of gates that can be independently opened and closed to regulate the dispersal amount and the dispersal width of the aggregate. , characterized in that it is composed of a cut-out drum, aggregate hopper provided with a release rake device achieving the function of the aggregate arching prevention and aggregate amount regulating quantifying sprayed adjust the aggregate.
[0009]
The invention according to claim 3
The aggregate hopper is set parallel to the road surface by a plurality of actuators fixed to the left and right of the apparatus main body.
The invention according to claim 4
The cutting drum has a structure in which a plurality of deformed hole grooves formed so as to gradually decrease in depth in the rotation direction of the cylindrical member are regularly arranged over the entire surface of the cylindrical member. To do.
[0010]
The invention according to claim 5
The travel device includes an outrigger device that is attached to four corners of the device body and floats the device body from the ground to rotate each wheel fixing frame device ,
Each wheel fixing frame device is configured to be position-adjustable between a position perpendicular to the side surface of the apparatus main body and a position parallel to the apparatus main body, and to be fixed at that position.
[0011]
The invention according to claim 6
The wheel fixing frame device is fixed at an arbitrary position by a detachable pin.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
First, the schematic structure of the self-propelled aggregate spraying device will be described.
The self-propelled aggregate disperser includes a device main body having a substantially rectangular shape when viewed from above , an aggregate disperser that disperses aggregate on the road surface, and an apparatus main body. And a traveling device for traveling the vehicle.
[0013]
That is, at the substantially central part of the vertically long body frame in the main body of the apparatus, the aggregate is divided into a plurality of pieces so that the aggregate spreader can be independently opened and closed to regulate the spread amount and spread width of the aggregate. There is an aggregate hopper equipped with a gate , a cutting drum that can arbitrarily and quantitatively adjust aggregates, and a release rake device that functions to prevent aggregate arching and regulate aggregate amount .
A wheel fixing frame having a self-propelled device is attached to four corners of the machine frame with pins so as to be rotatable.
[0014]
Each wheel fixing frame is configured to be position-adjustable between a position perpendicular to the side surface of the body frame and a position parallel to the body frame, and can be fixed at that position, thereby constituting an inter-wheel width adjusting means .
In addition, each wheel fixing frame is provided with a wheel that is rotatable about a line substantially perpendicular to the road surface as an axis center . With this configuration, the traveling direction during work and the traveling direction during movement can be selected. It has become.
[0015]
Further, in order to rotate each wheel fixing frame, an outrigger device for levitating the apparatus main body from the ground is provided at four corners at the bottom of the vertically long body frame.
Further, the vertically long body frame is provided with a power unit device and an operation panel for operating and controlling each device.
[0016]
Next, a specific structure of the self-propelled aggregate spraying device will be described.
FIG. 1 is a diagram showing the wheel direction when the machine is in a moving state, FIG. 2 is an enlarged view of part A, and FIG. 3 is a diagram showing the wheel direction when the machine is in a working state.
In these drawings, a hopper 2 is attached to a substantially central portion of the body frame 1 by hydraulic cylinders 11 and 11 '. Wheel fixing frames 3 and 3 'that are rotatable are fixedly attached to the four corners of the body frame 1 by pins (not shown). Further, the wheel fixing frames 3 and 3' are rotatable. Wheels 3A and 3'A having self-propelled devices are respectively attached.
[0017]
In addition, an engine device 4 and an operation panel 5 are installed in a part of the vertically long body frame 1.
A mechanism for setting the wheel fixing frames 3 and 3 'so that the machine is in a working state and a moving state will be described with reference to FIGS.
In the state of FIG. 1, the self-propelled aggregate spreading device self-propels from the transport vehicle (not shown) and moves to a predetermined place. When setting in the working state at this place, one of the outrigger devices 24, 24 'attached to both sides of the lower part of the apparatus main body is extended, and the self-propelled aggregate spreading device is lifted from the ground. In this state, the steering rod 8 and the tie rod 9 are removed.
[0018]
Next, the wheel fixing frames 3 and 3 'are fixed to arbitrary positions with pins (not shown) according to the construction situation.
Further, the wheels 3A, 3'A are rotated horizontally with respect to the apparatus main body and fixed with pins (not shown).
After such setting is completed on one side of the apparatus main body, the opposite side is set in the same procedure as described above.
[0019]
Next, referring to FIG. 2, a steering method during movement will be described.
The steering rod 8 moves in and out around the fixed pin PA by the expansion and contraction of the hydraulic cylinder 7 fixed to the vertically long body frame 1. Further, the wheel 3'A rotates within the range A in the figure around the fixed pin PB. Further, since the left and right steering wheels are connected by the tie rods 9, they have the function of performing the same operation and steering.
[0020]
When this steering device is operated, the wheel fixing frame 3 ′ is pin-fixed to the vertically long body frame 1.
Next, the state of the machine during the spraying operation will be described with reference to FIG.
Normally, the wheels 3A and 3'A travel on a smooth road surface without a step, but depending on the location, a state as shown in FIG. 6 may occur.
[0021]
In this case, the body frame 1 is inclined with respect to the asphalt pavement surface. When the aggregate is sprayed without adjusting the hopper 2 in the inclined state as described above, scattering unevenness occurs in the left and right portions.
Therefore, it is necessary to make the hopper 2 parallel to the asphalt pavement surface.
Therefore, the plurality of hydraulic cylinders 11 and 11 ′ fixed to the left and right of the body frame 1 are adjusted to expand and contract, and the hopper 2 is always set parallel to the asphalt pavement surface.
[0022]
7 and 8, the outline of the hopper 2 described above will be described.
As a structure of the hopper 2, a release rake 18 is attached to the inside of the hopper 2 for the purpose of preventing aggregate arching and regulating the amount of aggregate, and further, a cutting drum 16 for quantitatively dispersing the aggregate is a hopper. The regulation brush 15 which is provided in the bottom part and regulates an excess aggregate is attached to the upper part.
[0023]
These devices are driven by the rotation of the hydraulic motor and the speed reducer 17 attached to the rear part of the hopper 2 being transmitted to the respective devices via the intermediate shaft 19.
An open / close gate 12 for restricting the amount and spread of aggregate is attached to the front surface of the hopper 2. The open / close gate 12 adjusts the entire width of the hopper 2. Dispersion width adjusting gates 12 'divided into several parts are attached to the left and right sides of the hopper 2, respectively. The opening / closing adjustment of the opening / closing gate 12 is performed by extending / contracting the plurality of hydraulic cylinders 13, and the adjustment (full open or fully closed) of the spreading width adjusting gate 12 ′ attached to the left and right is a plurality of fixed to the opening / closing gate 12. The operation of the hydraulic cylinder 14 is performed.
[0024]
9 and 10, the cutting drum will be described.
The cutting drum (commonly referred to as a rotor) shown in FIG. 9 is a conventional technique, and the drum has a structure in which a plurality of blades 21 are fixed to the surface of a cylindrical pipe 20. As a result of rotation, aggregates are placed in the gaps between the blades 21 so that the aggregates can be dispersed.
[0025]
In this technique, the aggregate is scooped out by the groove between the blades 21, but in the aggregate state after spraying, unevenness of “rough-dense-rough-dense” occurs.
Such a problem is solved by the cut-out drum 16 having the shape shown in FIG. 10. The cut-out drum 16 has a structure in which a plurality of deformed hole grooves 23 regularly arranged on the surface of the cylindrical member 22 are provided over the entire circumference. This is the structure provided. Since the aggregate is scooped out by the action of the deformed hole groove 23, the state can be regularly and orderly and quantitatively dispersed.
[0026]
According to the self-propelled aggregate disperser described above, the following effects are obtained.
(1) Since it has a self-propelled wheel that can be turned, it can be moved by itself, and can be easily loaded and unloaded on a transport cart by itself, and a large crane or the like is not required.
(2) The location where the wheels run may be limited depending on the situation at the site , but even in such a case, the place where construction has been impossible until now is possible because the width between the wheels can be changed arbitrarily Can also be used.
(3) Since the wheel passes outside of the width where the aggregate is dispersed, it is possible to easily cope with the case where it is necessary to manually adjust the amount of aggregate spread due to an unexpected event.
(4) Even if there is a level difference in the place where the wheel travels, the hopper height can be easily adjusted. As a result, the hopper can always be held at the optimum spraying position (height), and the aggregate spraying accuracy is improved. be able to.
(5) By adopting a cut-out drum with a unique configuration, it is possible to always distribute aggregate in a regular and regular arrangement regardless of the amount of application.
(6) Aggregate spraying is possible in any field situation, and the spraying accuracy is improved, and the rework work by human power can be eliminated, thus freeing from labor saving and harsh labor. .
[0027]
【The invention's effect】
As explained above, according to the invention according to claim 1, the place where construction has been impossible until now can be easily loaded and unloaded by the self-propelled carriage and the width between the wheels can be arbitrarily changed. It is possible to use it at any site, and it is possible to disperse aggregates in any field situation, improve the accuracy of spraying, and eliminate manual repair work. Freed from labor.
[0028]
According to the invention which concerns on Claim 2, while being able to carry out quantitative dispersion | distribution adjustment of an aggregate , an arching prevention and aggregate amount regulation can be performed reliably, and the dispersion | spreading precision of an aggregate can be improved.
According to the invention which concerns on Claim 3, an aggregate hopper can be set in parallel with a road surface, and it can set appropriately according to a road surface condition.
According to the invention which concerns on Claim 4, regardless of the amount of application | coating amount, an aggregate can always be distributed with a fixed quantity and a regular arrangement | sequence.
[0029]
According to the fifth aspect of the present invention, the inter-wheel width adjusting mechanism and the wheel turning mechanism can be easily provided with a simple structure.
According to the invention which concerns on Claim 6, a wheel fixing frame can be fixed to arbitrary positions according to a construction condition.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a self-propelled aggregate dispersal device according to the present invention, and shows a state when the device is moved. FIG. 2 shows a wheel steering method when the device is moved. Fig. 3 is an enlarged view of part A in Fig. 1. Fig. 3 is a plan view showing the state of the wheels during the work of the device. Fig. 4 is an explanatory diagram of the wheel setting method during the operation and movement. Fig. 6 is an explanatory diagram of the wheel setting method of Fig. 6. Fig. 7 is an explanatory diagram at the time of step construction. Fig. 7 is a front view of the hopper. Fig. 8 is a side view of the hopper. ) Is a side view, (B) is a front view. FIG. 10 is an explanatory view of a cutting drum in the present invention, (A) is a side view, and (B) is a front view.
DESCRIPTION OF SYMBOLS 1 Airframe frame 2 Hopper 11, 11 'Hydraulic cylinder 3, 3' Wheel fixed frame 3A, 3'A Wheel 12 Opening / closing gate 12 'Spreading width adjusting gate 16 Cutting drum 23 Deformation hole grooves 24, 24' Outrigger device

Claims (6)

A device body having a substantially rectangular shape when viewed from above ;
Aggregate spreading device that is equipped in the device body and spreads aggregate on the road surface;
A traveling device that is mounted on the apparatus body and travels the apparatus body ;
Comprising
The traveling device includes a wheel, a wheel fixing frame device in which a base end portion is attached to four corners of the device main body so as to be rotatable about a line substantially perpendicular to the road surface as an axis, and each wheel fixing frame device. attached to the tip portion, a wheel turning means for turning the substantially vertical line as the axis around each wheel relative to the road surface,
A self-propelled aggregate disperser characterized by comprising The aggregate disperser is provided at a substantially central portion of the machine body frame constituting the apparatus main body, and is divided into a plurality of gates that can be independently opened and closed to regulate the dispersal amount and the dispersal width of the aggregate. excised drum, self-propelled according to claim 1, characterized in that they are composed of aggregates hopper provided with a release rake device achieving the function of the aggregate arching prevention and aggregate amount regulating quantifying sprayed adjusted aggregate Aggregate spreader. The self-propelled aggregate spraying device according to claim 2 , wherein the aggregate hopper is set in parallel with the road surface by a plurality of actuators fixed to the left and right of the apparatus main body. The cutting drum has a structure in which a plurality of deformed hole grooves formed so as to gradually decrease in depth in the rotation direction of the cylindrical member are regularly arranged over the entire surface of the cylindrical member. The self-propelled aggregate spraying device according to claim 2 or 3 . The travel device includes an outrigger device that is attached to four corners of the device body and floats the device body from the ground to rotate each wheel fixing frame device ,
Each wheel fixed frame device, according to claim, characterized in that is configured to be fixed at a position adjustable and its position between a position where the parallel from a position perpendicular to the apparatus main body side 1-4 The self-propelled aggregate dispersal device according to any one of the above. The self-propelled aggregate spraying device according to any one of claims 1 to 5, wherein the wheel fixing frame device is fixed to an arbitrary position by a detachable pin.

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