JP3965650B2 - Earth auger mud dripping device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mud dropping device for an earth auger, and in particular, it can follow up and down movement accompanying rotation of an auger screw by an elastic bar attached to a steady cylindrical body, and efficiently scrapes earth and sand from the screw. This is related to a mud dropping device for an earth auger.
[0002]
[Prior art]
As shown in FIG. 5, the earth auger has a structure in which a driving device 14 and an auger screw 3 connected thereto are suspended from a top sheave 13 of a undulating leader mast 12 provided in a base machine 11 capable of traveling. Have.
The drive device 14 moves up and down along the leader mast 12, and the auger screw 3 is rotated by the drive device 14, and is inserted into the ground in the shape of a grind for excavation.
The earth and sand excavated at the tip of the auger screw 3 is conveyed upward along the screw surface and discharged to the ground to form an excavation hole.
Further, the auger screw 3 is positioned by the steadying cylinder 1 slidably supported by the leader guide 15 of the leader mast 12.
[0003]
By the way, when pulling up the auger screw, since earth and sand are adhered between the screws, it must be scraped off on the ground.
As an apparatus for scraping off such earth and sand, for example, as disclosed in Japanese Utility Model Publication No. 3-40959, an inner and outer through-hole is formed in a steady cylindrical body of an auger screw of an earth auger, and a single steel core is formed. An earth auger mud dropping device has been proposed in which an elastic linear body made of a wire is inserted from the outside into the steady-rest cylinder through the through-hole so as to be adjustable in length.
[0004]
[Problems to be solved by the invention]
However, the conventional earth auger mud dropping device is configured to remove the mud adhering to the screw by contacting the elastic linear body by rotating the auger screw. Since the steel core wire is planted, the thin elastic wire body escapes the earth and sand, and the scraping efficiency is deteriorated. In addition, the steel core wire is out even during the excavation work. There was a problem that the wear of the linear body was severe.
[0005]
Further, the earth auger mud dropping device described in JP-A-6-50077 constitutes a scraping device by disposing a spatula in the vicinity of the screw surface. In order to provide a new earth auger machine as a separate body, there is a problem that an installation space is required and the entire apparatus becomes large.
[0006]
In view of the problems of the conventional earth auger mud dropping device, the present invention can follow up / down movement of the auger screw and the vertical movement accompanying rotation, and can efficiently scrape earth and sand from the screw. At the same time, it is an object to provide a mud dropping device for an earth auger that is easy to handle such as maintenance.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the earth auger mud dripping device of the present invention is an earth auger mud dripping device that scrapes the earth and sand adhering to the auger screw by an elastic bar attached to the steady tube of the auger screw. The steady-rest cylinder is composed of a fixed cylinder part in which the cylinder wall is formed into an integral cylinder, and a movable cylinder part in which the cylinder wall is formed so that it can be opened and closed, and the elastic linear body is converged on the movable cylinder part. The elastic rod-shaped body formed by integrating at least the ends of the elastic linear bodies by welding or the like is attached so that the elastic rod-shaped body protrudes inside the steady cylindrical body It is characterized by that.
Here, the term “elastic linear body” means a line that is thinner than the “elastic rod-shaped body” and includes thin rods and plates in addition to linear ones, and these shall not be excluded. .
[0008]
In this earth auger mud dropping device, the steadying cylinder is composed of a fixed cylinder part in which the cylinder wall is formed into an integral cylinder, and a movable cylinder part in which the cylinder wall is formed so as to be openable and closable. In addition, the elastic rod-shaped body formed by converging the elastic linear body into a bundle shape is attached so that the elastic rod-shaped body protrudes inside the steady-rest cylinder, so that it converges and forms a bundle shape. In addition, the elastic rod-shaped body formed by integrating at least the tips of the elastic linear bodies by welding or the like can also follow the vertical movement accompanying the rotation of the auger screw, thereby efficiently removing earth and sand from the screw. Can be scraped off well.
Moreover, since the mud dropping device of this earth auger uses the steady-rest cylinder as a support for the elastic rod-like body as it is, the support part does not protrude outside like the conventional mud dripping device, Since the device can be made compact and the number of parts can be reduced, and the elastic rod-like body is attached to the movable cylinder part. When opening the door wall and pulling up the auger screw, the door wall can be closed to remove the earth and sand, which is combined with the fact that the life of the elastic rod can be greatly extended, making it easy to handle maintenance etc. It becomes.
Furthermore, the mud dropping device of the earth auger has an elastic rod-like body packaged, so that it is easy to replace and the lower movable cylinder part is constantly restrained by the upper fixed cylinder part while restraining the swing of the auger screw. The earth and sand can be scraped off by opening and closing as appropriate.
[0009]
In particular, the elastic linear bodies are converged and formed into a bundle by consolidating at least the ends of the elastic linear bodies formed by converging the elastic linear bodies into a bundle by welding or the like. It is possible to make the tip of the elastic rod-shaped body difficult to be scattered, and to improve its durability life.
[0010]
In this case, a hydraulic cylinder can be disposed on the door wall of the movable cylinder portion, and the door wall of the movable cylinder portion can be opened and closed by the hydraulic cylinder.
[0011]
This allows the hydraulic pump to open and close the door wall where the elastic rod-shaped body is installed, and adjusts the elastic rod-shaped body according to the degree of sedimentation, making it possible to perform proper and quick operations and eliminates the need for direct manual work. As a result, the safety of scraping work can be improved.
[0012]
Moreover, a through-hole can be formed in the steadying cylinder, and the protruding length of the elastic rod-shaped body can be fixed to the through-hole in an adjustable manner.
[0013]
As a result, the amount of overhang of the elastic rod-shaped body inside the steady-rest cylinder can be easily adjusted, and the scraping efficiency can be optimized.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a mud dropping device for an earth auger according to the present invention will be described below with reference to the drawings.
[0015]
1 to 4 show an embodiment of a mud dropping apparatus for an earth auger according to the present invention.
[0016]
This earth auger mud dropping device is a mud dripping device that scrapes off the earth and sand adhering to the auger screw 3 by the elastic rod-like body 2 attached to the steady cylinder 1 of the auger screw. A steel core wire is used as the elastic linear body 4 constituting the elastic rod-shaped body 2, and a number of these are converged to form a bundle, and the elastic rod-shaped body 2 is placed inside the steady cylindrical body 1. Projecting in the radial direction.
[0017]
The steadying cylinder 1 includes an upper fixed cylindrical portion 1a having a cylindrical wall formed in an integral cylindrical shape, and a lower movable cylindrical portion 1b having a cylindrical wall formed to be openable and closable. And is attached to the leader mast 12 so as to be movable up and down.
As shown in each figure, the steadying cylindrical body is formed so that the cylindrical wall of the lower movable cylindrical portion 1b can be opened and closed, and the door wall 5 of the opening and closing portion and the door wall 5 are pivotally attached. The elastic rod-like bodies 2 are respectively disposed on the main body side cylindrical wall 6.
The two door walls 5 are respectively provided with hydraulic cylinders 7 so as to be laid between the main body side cylindrical wall 6 (not shown in FIG. 1). It opens and closes.
Accordingly, the door wall 5 provided with the elastic rod-shaped body 2 is opened and closed by a hydraulic pump (not shown), and the elastic rod-shaped body 2 is adjusted according to the degree of sedimentation of the screw 3 to achieve proper and rapid operation. In addition to performing the operation, it is possible to improve the safety of scraping work by eliminating the need for direct manual work.
In addition, by arranging the elastic rod-like body 2 on the door wall 5 that opens and closes the movable cylinder portion 1a in this way, when necessary, specifically, when excavating, the door wall 5 of the movable cylinder portion 1a is When the auger screw 3 is opened and the auger screw 3 is pulled up, the door wall 5 can be closed and the earth and sand can be scraped off, so that the life of the elastic rod-like body 2 can be greatly extended.
[0018]
As shown in FIG. 4, the elastic rod-shaped body 2 converges a large number of steel core wires 4 having the same length in this embodiment, and at least the base end portion of the bundle of steel core wires 4. The tip portion is integrated by welding (welding range W) and welded to a support member 8 made of H-shaped steel. In addition, in order to prevent the dispersion | variation in the bundle-shaped steel core wire 4, the whole can be welded lightly, for example, only outer periphery can be welded in a ring shape.
On one side of the supporting member 8 made of H-shaped steel, pipes 9 for fixing the elastic rod-like body 2 to the steady-rest cylinder 1 are provided at two positions in the length direction of the elastic rod-like body 2. .
That is, the elastic rod-like body 2 penetrates the through-hole 10 formed in the door wall 5 and the main body-side cylinder wall 6 of the steady-stop cylinder 1 from the outside, and is elastic with the through-hole 10 formed in the through-hole 10. By fixing the position of the pipe 9 of the rod-like body 2 and fixing it with a bolt or the like, it can be fixed to the steadying cylinder 1.
In this case, the elastic rod-like body 2 is slid back and forth and positioned by the two pipes 9 to easily adjust the protruding length of the elastic rod-like body 2 protruding inside the steady-rest cylinder 1 and scrape it off. The efficiency is optimized.
In addition, when attaching the some elastic rod-shaped body 2 to the steadying cylinder 1, it is also effective to change the length of each elastic rod-shaped body 2 into long, medium, and short, for example.
[0019]
Thus, the mud dropping device for the earth auger according to the present embodiment converges a large number of the steel core wires 4 to form the elastic bar-like body 2 and the bundle-like elastic bar-like body 2 to the inside of the steady cylindrical body 1. Thus, the densely planted steel core wire 4 can follow the vertical movement accompanying the rotation of the auger screw 3, whereby the earth and sand can be efficiently scraped off from the screw 3.
Further, since the mud dropping device of this earth auger uses the steady cylindrical body as a support for the elastic rod-like body 2 as it is, the support part does not protrude outside like the conventional mud dripping device. The apparatus can be made compact and the number of parts can be reduced.
And by welding the front-end | tip parts of the steel core wire 4 of the elastic rod-shaped body 2, the front-end | tip of the steel core wire 4 can be made hard to be scattered, and the durable life can be improved.
Furthermore, the through-hole 10 is formed in the steady-state cylinder 1, and the protruding length of the elastic rod-like body 2 is fixed to the through-hole 10 so that the elastic rod-like body 2 can be adjusted. The amount can be easily adjusted to optimize the scraping efficiency.
Further, the cylindrical wall of the steadying cylinder 1 is formed so as to be openable and closable, the elastic rod-like body 2 is disposed on the door wall 5 that is opened and closed, and the hydraulic cylinder 7 is disposed on the door wall 5, and the hydraulic cylinder 7 opens and closes the door wall 5, opens and closes the door wall 5 provided with the elastic rod-like body 2 with a hydraulic pump, and adjusts the elastic rod-like body 2 in accordance with the degree of adhesion of earth and sand. And the safety of scraping work can be improved by eliminating the need for direct manual work. Further, when necessary, specifically, when excavating, the door wall 5 of the movable cylinder portion 1a is When the auger screw 3 is opened and lifted, the door wall 5 can be closed to remove the earth and sand, so that the life of the elastic rod-like body 2 can be greatly extended.
Furthermore, the mud dropping device of the earth auger of the present embodiment is easy to replace because the elastic rod-shaped body is packaged, and while constantly restraining the swing of the auger screw at the upper fixed cylinder portion 1a, The movable cylinder portion 1b can be appropriately opened and closed to scrape earth and sand.
[0020]
As mentioned above, although the Example of this invention was described, the structure of the mud dropping apparatus of the earth auger of this invention is not limited to description of this Example, For example, the elastic linear form which comprises the elastic rod-shaped body 2 As the body 4, in addition to the steel core wire described in the above embodiment, a linear material having elasticity, such as a metal spring such as a coil spring or a leaf spring, a plastic spring or a rubber spring, is widely used. In addition, even when these materials are used, if necessary, at least the tip portions are integrated by welding, bonding, fusion, etc. It is possible to make appropriate changes within a range that does not depart from the gist, such as improving the durability life.
[0021]
【The invention's effect】
According to the mud dropping device of the earth auger of the present invention, the steadying cylinder is composed of a fixed cylinder part in which the cylinder wall is formed into an integral cylinder, and a movable cylinder part in which the cylinder wall is formed so that it can be opened and closed. Since the elastic rod-like body converged and formed in a bundle shape is attached to the movable cylinder portion so that the elastic rod-like body protrudes inside the steady-rest cylinder body, it converges into a bundle shape. The formed elastic rod-like body can follow the vertical movement accompanying the rotation of the auger screw, and thus the earth and sand can be efficiently scraped off from the screw.
Moreover, since the mud dropping device of this earth auger uses the steady-rest cylinder as a support for the elastic rod-like body as it is, the support part does not protrude outside like the conventional mud dripping device, Since the device can be made compact and the number of parts can be reduced, and the elastic rod-like body is attached to the movable cylinder part. When opening the door wall and pulling up the auger screw, the door wall can be closed to remove the earth and sand, which is combined with the fact that the life of the elastic rod can be greatly extended, making it easy to handle maintenance etc. It becomes.
Furthermore, the mud dropping device of the earth auger has an elastic rod-like body packaged, so that it is easy to replace and the lower movable cylinder part is constantly restrained by the upper fixed cylinder part while restraining the swing of the auger screw. The earth and sand can be scraped off by opening and closing as appropriate.
[0022]
In particular, the amount of overhang of the elastic rod inside the steady tube can be easily adjusted by forming a through hole in the steady tube and fixing the protruding length of the elastic rod to the through hole. , Scraping efficiency can be optimized.
[0023]
In addition, the elastic linear bodies are converged and formed into a bundle by integrating at least the ends of the elastic linear bodies formed by converging the elastic linear bodies into a bundle by welding or the like. It is possible to make the tip of the elastic rod-shaped body difficult to be scattered, and to improve its durability life.
[0024]
In addition, the cylindrical wall of the steadying cylinder is formed to be openable and closable, and an elastic rod-like body is provided on the door wall to be opened and closed, and a hydraulic cylinder is provided on the door wall, and the door wall is opened and closed by the hydraulic cylinder. By using the hydraulic pump to open and close the door wall on which the elastic rod-shaped body is disposed, and adjusting the elastic rod-shaped body according to the degree of soil adhesion, it is possible to perform an appropriate and quick operation. It is possible to improve the safety of scraping work by eliminating the need for direct work.
Moreover, since it is possible to remove the sand and sand by closing the door wall when necessary, the life of the elastic rod-like body can be greatly extended.
[Brief description of the drawings]
FIG. 1 is a perspective view of essential parts showing an embodiment of a mud dropping apparatus for an earth auger according to the present invention.
FIG. 2 is a plan view of the same section.
FIG. 3 is a cross-sectional plan view showing a state when the door wall is opened.
4A is a front view, FIG. 4B is a plan view, FIG. 4C is a rear view, and FIG. 4D is a cross-sectional view orthogonal to the longitudinal direction.
FIG. 5 is an overall view showing an excavation method using an earth auger.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Stabilizing cylinder 1a Fixed cylinder part 1b Movable cylinder part 2 Elastic rod-shaped body 3 Auger screw 4 Elastic linear body (steel core wire)
DESCRIPTION OF SYMBOLS 5 Door wall 6 Main body side cylinder wall 7 Hydraulic cylinder 8 Support member 9 Pipe 10 Through-hole 11 Base machine 12 Leader mast 13 Top sheave 14 Drive device 15 Leader guide W Wire welding range

Claims (3)

In an earth auger mud dropping device that scrapes off the earth and sand adhering to the auger screw with an elastic rod attached to the steady tube of the auger screw, the steady cylinder is fixed to the cylindrical wall formed as an integral cylinder. A cylindrical portion and a movable cylindrical portion formed so that the cylindrical wall can be opened and closed. The elastic linear body is converged into a bundle shape on the movable cylindrical portion, and at least the distal end portions of the elastic linear body are arranged between each other. A mud dropping device for an earth auger characterized in that an elastic rod-like body integrally formed by welding or the like is attached so that the elastic rod-like body protrudes inside the steady-rest cylinder.   2. A mud dropping apparatus for an earth auger according to claim 1, wherein a hydraulic cylinder is disposed on a door wall of the movable cylinder portion, and the door wall of the movable cylinder portion is opened and closed by the hydraulic cylinder. 3. The earth auger mud dropping device according to claim 1 , wherein a through-hole is formed in the steadying cylinder, and the protruding length of the elastic rod-like body is fixed to the through-hole so as to be adjustable.

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