JPH111908A - Hood for stabiliazer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clean frequently mixture stuck on the inside face of a hood and reduce echoes caused by scraping and crushing of the mixture in the hood. SOLUTION: Crushed pieces scraped by a stabilizer are circulated, crushed, and mixed in the hood of a stabilizer. In this case, the hood is provided with side walls 11, 11' covering both sides of the scraping part 2 of the stabilizer, support frame members 12 laid between the upper peripheral edges of both side walls 11, 11', and a cover 13 made from a rubber-like member spread so as to cover the scraping part 2 of the stabilizer, on the support frame members 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hood for covering a raked portion of a stabilizer that rakes a roadbed or the like while running on a road and crushes and mixes the ground with a ground improvement material.

[0002]

2. Description of the Related Art Stabilizers are used to stir and mix roadbeds while traveling on the road by themselves, and in addition to scraping (crushing) and mixing the roadbeds, they also spray additives and water. The stabilizer is composed of a traveling device and a working device. The traveling device is roughly classified into two traveling types, a tire type and a crawler type, and the operating devices are classified into a rotor drum type and a chain type. A rotor drum type working device is provided with a rotor drum having teeth, such as tines and bits, on its outer peripheral surface, which are supported by a frame of a traveling device, and which rakes a mixture to be crushed such as soil, crushed stone, pavement material, sand, etc. And a hood that is laid down on the road surface, and the teeth that rotate as the rotor drum rotates cause the mixture to be crushed. The crushed fragments are further circulated and pulverized in a hood, mixed with an additive such as cement or asphalt emulsion, and then discharged while being leveled to a predetermined height at a gate at the rear end of the hood.

[0003] In addition, the chain-type working device has two rotating shaft sprockets each having a sprocket formed on the outer periphery.
A chain provided with teeth is hung around, and the rotating shaft is rotated to rotate the chain and to scrape a roadbed or the like. Recently, a technique has been proposed in which a hood is used in combination with the chain-type working device, and the scraped fragments are circulated, crushed, and mixed with additives in the hood. However, these conventional stabilizers have the following problems because the hood made of a steel plate covers around the rotor drum or around the chain.

[0004]

When the stirred mixture sticks to the inner surface of the steel hood, it becomes very difficult to drop. In particular, when the mixture is damp, the adhered mixture dries more hardly to fall off, and thus must be cleaned frequently. However, in the conventional hood, it is difficult to clean the inner surface because the rotor drum interferes with the cleaning, so that it is necessary to remove the entire heavy hood from the raked portion of the rotor drum or the like in order to perform sufficient cleaning. A large amount of labor was required, and frequent cleaning was difficult. In addition, the conventional stabilizer that stirs the roadbed and the like with the teeth provided in the stirrer, circulates and shatters the crushed pieces in the hood, and mixes with the additive, is crushed and mixed because the material is steel plate The resulting sound reverberated in the hood, causing a noise problem. SUMMARY OF THE INVENTION An object of the present invention is to provide a stabilizer hood that solves the above problems, enables frequent cleaning of the inner surface of the hood, facilitates replacement and replacement of the hood, and further reduces noise.

[0005]

In order to achieve the above object, the present invention is directed to a stabilizer hood for circulating and crushing and mixing crushed pieces scattered by a stabilizer, wherein the hood is provided on both sides of a raked portion of the stabilizer. And a support frame member spanned between upper peripheral edges of the side walls, and a cover portion formed of a rubber-like member stretched on the support frame member so as to cover the stir-up portion of the stabilizer. , Is characterized by having. Further, the cover may be detachably attached to the support frame member.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a hood for a stabilizer according to the present invention;
Will be described in detail. In addition, the stabilizer S to which the hood 1 according to the present invention is attached is not limited to the embodiment described later, and a method in which the roadbed is raked by the rake unit 2 and the crushed pieces are circulated and pulverized in the hood 1. Can be applied to another stabilizer S.

FIGS. 1, 2 and 3 are schematic views showing a first embodiment of the hood 1, FIG. 1 is an enlarged perspective view of the hood 1 partially cut away, and FIG. FIG. 3 is a side view of the stabilizer S provided with the hood 1 in the present embodiment when viewed from above (XX in FIG. 1).

As shown in FIG. 3, a stabilizer S having a hood 1 in this embodiment is an example in which a traveling device is a crawler type and a working device is a rotor drum type.
The hood 1 is attached via the hood 2. As shown in FIGS. 1 and 2, the rotation shaft 22 of the rotor drum 20 is supported by the arm 32 at the tip of the arm 32.
The base end of the arm 32 is mounted on the traveling device A (see FIG. 3). The cylinder 31 has the rod end attached to the arm portion 32 and the base end attached to the traveling device A. The action of the cylinder 31 causes the rotor drum 20 to move up and down about the base end side of the arm portion 32 as a fulcrum. The hood 1 is provided on the rotating shaft 22 of the rotor drum 20 so as to cover the rotor drum 20 and to be laid down on the roadbed by its own weight. The rotor drum 20 in the present embodiment corresponds to the raking unit 2.

The hood 1 according to the present embodiment is composed of a frame portion and a cover portion 13 as shown in FIG. The frame portion is a substantially semicircular side wall 1 covering both sides of the raking portion 2.
1, 11 'and a plurality of support frame members 12 spanned between the peripheral edges of both side walls 11, 11'.
Are fixed along the edge of the semicircle which is the upper edge of both side walls 11, 11 '. Furthermore, both side walls 11, 1
1 'is fixed to the distal end of the arm 32 and is connected to a traveling device A described later. The materials of the side walls 11, 11 'and the support frame member 12 can withstand the crushing and mixing of the crushed pieces performed inside the hood 1 and support the cover portion 13 so as not to hang down. What is necessary is to have sufficient strength to maintain the value. Also, the support frame member 12
Is not limited to the shape or the like shown in the present embodiment, but has a plurality of gaps between the bridged support frame members 12 and sticks to the cover portion 13 which is seen through the gaps. It is only necessary that the mixture C can be knocked down by an external impact. Therefore, the shape of each support frame member 12 may be a polygonal cross section or an elongated plate, or the arrangement may be a lattice.

[0010] A rectangular rubber-like member having a predetermined thickness is stretched as a cover on the framework having the above structure. In the present embodiment, a plurality of U bolts 14 are provided on each straight line where the cover portion 13 is in contact with the support frame member 12.
Are attached in parallel, and the cover 13 and the support frame member 12 are detachably attached and stretched by these U bolts 14. Although not shown in the present embodiment,
A gate portion may be attached to the rear end of the side wall 11, 11 'of the hood 1 instead of the support frame member 12 to further enhance the effect of leveling the discharged mixture.

FIG. 2 is a cross-sectional view (XX in FIG. 1) when the hood 1 is viewed from the side, showing the state of attachment inside, and the mixture C adhered to the cover 13 by circulation and pulverization. It is shown. The cover 13 circulates and crushes the crushed pieces between the rotating rotor drum 20 and the crushed piece, so that the cover 13 withstands crushing pressure from the inside of the hood 1 and the predetermined thickness increases from the space between the frames of the support frame member 12. Any thickness is acceptable as long as it can be bent and kept from hanging down.

The rubber member, which is the material of the cover 13, may be a natural rubber, a synthetic rubber, a synthetic resin, or the like, and efficiently transmits the impact force of a hammer or the like from the outside of the hood 1 to the inside of the hood 1. It is only necessary that the material has such a flexibility that the mixture C attached to the inner surface can be knocked down. Further, the rectangular shape of the cover portion 13 is formed such that the inside covered by the side walls 11, 11 'is stretched along the periphery of the side walls, and the peripheral edges of the side walls 11, 11' and the support frame member 1 are extended.
It has a shape corresponding to 2 lengths.

With the above structure, the mixture C can be easily knocked down by a blow applied from the outside of the hood 1, and even if the cover 13 is damaged or the like, it can be easily replaced or replaced. Further, since the cover portion 13 is made of a rubber-like member, it is possible to reduce the reverberation of the sound generated by circulation and pulverization, thereby reducing the generation of noise.

Next, the means for mounting and rotating the rotor drum 20, which is the raking unit 2, will be described with reference to FIGS. Rotary shaft 2 of rotor drum 20
2 is rotatably supported by the arm 32 as described above, and the bit 21 provided around the rotor drum 20 protrudes from the lower surface when the hood 1 is turned down on the road surface. In addition, the rotor drum 20 has its rotating shaft 22 coupled to a drive source (not shown) (for example, a hydraulic motor or the like) and rotates, so that the roadbed or the like can be raked.

Next, a hood 1 according to a second embodiment will be described with reference to FIG. The stabilizer S shown in FIG. 4 has a tire-type traveling system, and has a rotor drum, which is the raking unit 2, attached to the bottom of the traveling device A at the middle. The side walls 11, 11 'in the present embodiment have a trapezoidal shape, and a plurality of support frame members are bridged between other sides (upper periphery) excluding the bottom side. Further, the cover part 13 is bent at two places in the middle of the rectangular shape so as to be stretched along the peripheral edge, and is attached with a U bolt 14.

Reference numeral 31 in the drawing denotes a cylinder for lifting the hood 1, the base end of which is attached to the traveling device A, and the tip end of the rod which is attached to the arm 32. The arm 32 has a proximal end attached to the traveling device A and a distal end attached to the side walls 11, 11 'of the hood 1. The hood 1 is lifted by the action of the cylinder 31, as in the first embodiment. Can be The means for mounting the rotor drum and for rotating the rotor drum are the same as those described in the first embodiment, and a description thereof will be omitted.

FIG. 5 is a schematic side view showing a third embodiment in which the hood 1 according to the present invention is attached to a chain type working device B. The raking portion 2 of the present embodiment supports two rotating shaft portions 23 provided with a plurality of sprockets formed around the outer periphery in the axial direction, and rotatably supports the two rotating shaft portions 23 and connects them to each other. It has a boom 24 and a chain 25 which is wound around the plurality of sprockets and provided with a bit 21. The raking unit 2 having the above-described configuration rotates the chain 25 by the rotation of the rotary shaft 23, and the bit 21 provided on the chain 25 rakes the roadbed, and crushes and mixes inside the hood 1.

A rotating shaft (not shown) inside the hood 1
Is rotatably supported by an arm 32 through both side walls 11, 11 ', and a drive unit (for example, a hydraulic motor or the like) for rotation is mounted in the shaft. Also,
The boom 24 is fixed so as to face a certain direction downward with respect to the hood 1 lying on the ground, and the direction is determined by the depth of the raking. The arm 32 connects the traveling device A and the hood 1 so that the traveling device A becomes a fulcrum, and the hood 1 is lifted by the action of the cylinder 31 as in the first embodiment.

The shape of the side walls 11, 11 'is not limited to the above embodiments, and the inside surrounded by the side walls 11, 11' and the support frame member 12 hinders the raking of the raking portion 2. Any other shape may be used as long as a sufficient volume can be ensured for pulverization and mixing of the crushed crushed pieces without causing crushing.

[0020]

According to the present invention, since the hood is a flexible rubber-like member, the impact force of a hammer or the like from the outside of the hood can be efficiently transmitted to the inner surface of the hood, and the stuck mixture can be knocked down. Therefore, simple cleaning by hitting can be frequently performed before the mixture dries. Furthermore, since the material of the hood is a rubber-like member, it is possible to suppress the generation of noise without the pulverization and mixing sound reverberating inside the hood. The cover part is
Since it is configured to be detachably attached to the support frame member, replacement is easy.

[Brief description of the drawings]

FIG. 1 is a schematic enlarged perspective view of a hood according to a first embodiment.

FIG. 2 is a schematic side sectional view of the hood according to the first embodiment;

FIG. 3 is a schematic side view in which the hood according to the first embodiment is attached to a stabilizer;

FIG. 4 is a schematic view for explaining a second embodiment, and is a side view in which a hood is partially broken.

FIG. 5 is a schematic diagram illustrating a third embodiment, and is a side view in which a hood is partially broken.

[Explanation of symbols]

 S: Stabilizer A: Traveling device B: Working device C: Mixture 1: Hood 11, 11 ': Side wall 12: Support frame member 13: Cover portion 14: U bolt 2: Raised portion 20: Rotor drum 21: Bit 22: Rotating shaft 23: Rotating shaft 24: Boom 25: Chain 31: Cylinder 32: Arm

Claims (2)

[Claims] 1. A stabilizer hood for circulating and crushing and mixing crushed pieces scraped by a stabilizer, wherein the side wall covers both sides of a raked portion of the stabilizer, and is bridged between upper peripheral edges of both side walls. A hood for a stabilizer, comprising: a support frame member provided; and a cover portion made of a rubber-like member stretched over the support frame member so as to cover the raked portion of the stabilizer. 2. The stabilizer hood according to claim 1, wherein said cover portion is detachably attached to said support frame member.