JPH0619634Y2 - Jig for processing underground pine piles protruding in the excavation area - Google Patents

Description

[Detailed description of the device] Industrial field of application This device is used for foundation work when dismantling an aging building or the like and rebuilding it into a new building, especially for trench excavation work for constructing a continuous underground wall. When a pine pile used as a support pile for an old building or the like protrudes on a section or on the excavation line and interferes with the operation of the bucket for excavation, it is used to treat the pine pile so that it does not interfere with the excavation work. The present invention relates to a jig for treating underground pine piles, and more particularly to a jig for treating underground pine piles that is used by being attached to the tip of an excavation bucket.

2. Description of the Related Art Conventionally, a pine pile b protruding to a position near the center of an excavation groove a as shown by a dotted line in FIG. 3 can be easily treated by, for example, crushing it with an excavation bucket or pulling it out.

However, the pine pile b ₁ lying on the excavation line of the excavation groove a as shown in FIG. ₁ or the pine pile b ₂ partially traveling on the excavation line as shown in FIG. There was no way to handle it.

Problems to be solved by the present invention As shown in FIG. 1, the lying pine pile b ₁ cannot be pulled out, and there is no convenient tool to cut it out, which is very difficult for the progress of the construction. As for the Matsukui b ₂ that only a portion as in the third view is Shutcho' excavation line, tools scraping clean along the portion Ri its trip to the drilling line was not. On the other hand, when the pine pile b ₂ is pulled out, the trace thereof forms a large recess in the groove wall, and there is a problem that the ground loosens.

Further, any of the pine piles b ₁ and b ₂ will hit each other each time the excavation bucket is operated unless it is processed, which will be a hindrance. In particular, every time the bucket hits a pine stake, the wall surface of the groove is greatly damaged, which makes it difficult to secure the construction accuracy.

Means for Solving Problems As means for solving the problems of the above-mentioned conventional techniques, the jig for underground pine pile processing protruding to the excavation part according to the present invention is
As shown in a preferred embodiment in FIGS. 1 and 2, a box structure having an opening 8 of a size and shape which allows the excavation bucket 2 to be closed and bite at the upper end thereof. Brackets 3, 3 to which the excavating blades 2a, 2a of the closed excavating bucket 2 bite are provided in the substantially central portion on the inner side of 8. One side surface of this box structure is formed as a reaction force plate 5 that penetrates deeply into the ground, and the lower end of the opposite side surface is formed as a stepped shape as a pine pile cutter blade 4 that penetrates shallowly into the ground. . The jig is attached to the tip of the excavation bucket 2 and used to cut off the underground pine pile b protruding to the excavation portion by the pine pile cutter blade 4.

Action The underground pine pile processing jig 1 can be easily and firmly mounted by simply operating the excavating bucket 2 on the bracket 3.

Then, the pine pile cutter blade 4 of the jig 1 is aligned with the cutting position of the pine pile b, and a ground crawler crane or the like for driving the excavation bucket 2 is operated to vertically move the jig 1 by so-called chopping. It can be cut or cut like cutting b. During this cutting operation, the reaction force plate 5 on the opposite side
Since it penetrates deeply into the ground, the reaction force at the time of cutting is taken to the ground side, and the steadying action of the jig 1 works to ensure high excavation accuracy. After cutting or cutting the pine pile b, the jig 1 is pulled up to the ground together with the excavation bucket 2, the bucket 2 is opened, the jig 1 is removed, and the groove excavation work by the bucket 2 is continued. .

Example Next, the example shown in FIGS. 1 and 2 will be described.

In the illustrated pine pile processing jig 1, the width of the groove a for continuous underground wall to be excavated in the groove width direction is about 1000 mm, which is almost the same as the groove width.
The length in the longitudinal direction of the groove is about 2200 mm, and the maximum height on the reaction plate side is 28.
It is formed by assembling a steel plate into a rectangular box shape with a size of about 00 mm. Moreover, the inner width dimension of the upper end opening 8 is formed to be slightly larger than the width dimension B of the excavating bucket 2 as shown in FIG. It has a size and shape that can be closed and bited. 2 at the center of the inside of the upper end opening 8
2 brackets 3 in the form of welded H-shaped steel
3 is provided, and the excavating blade 2 of the excavating bucket 2 that is closed
The a and 2a are firmly bitten from both sides so that the jig 1 can be mounted. Since the jig 1 is mounted by opening and closing the excavation bucket 2 as described above, the time required for mounting the jig for use is about 3 minutes.

Next, one side surface of the jig 1 is formed as a reaction force plate 5 having a maximum height of about 2800 mm and penetrating deep enough into the ground. The opposite side surface has a maximum depth of about 1500 mm and is formed in a stepped shape that shallowly penetrates into the ground, and a pine pile cutter blade 4 is provided downward at the lower end of the side surface.

Therefore, in constructing the underground continuous wall c as shown in FIG. 4, in the construction for excavating the wall groove a as shown in FIG. 3, when the pine piles b project on the excavation line, first, In the inclinometer of the main body of the crawler crane, the position and state of the pine pile b is, for example, the lying pine pile b ₁ as shown in FIG. ₁ , or only a part thereof is projected on the excavation line as shown in FIGS. Check if it's a pine pile b ₂ , etc.

Then, the jig 1 is attached to the tip of the excavating bucket 2 by biting it, the pine pile cutter blade 4 is set at the cutting position of the pine pile b ₁ , and the jig 1 is operated by operating the crawler crane on the ground. By chopping to move up and down,
Cut or cut the pine piles b ₁ or b ₂ . At the time of this cutting, the reaction force plate 5 on the side opposite to the cutter blade 4 penetrates deeply into the ground ahead of the cutter blade 4 and secures the reaction force at the time of cutting, so that the lateral deflection of the jig 1 is prevented. It does not occur at all. Therefore, for example, it was confirmed that pine pile processing with high accuracy of 1/600 mm can be performed.

Further, in the pine pile b ₁ lying on the excavation line as shown in FIG. ₁ , when it is necessary to cut the portion 10 on the side opposite to the position where the cutter blade 4 is hit as shown in the drawing, simply use a jig. Cut 1 with 180 ° inverted.

When only a portion of Matsukui b ₂ as shown in FIG. 3 and FIG. 4 is Shutcho' drilling line will be cut only that Shutcho' portion perpendicularly (see FIG. 4).

Advantageous Effects of the Present Invention As described above in detail in connection with the embodiments, the underground pine pile processing jig protruding to the excavating portion according to the present invention is mounted on the tip of the excavating bucket 2 for use. There is a convenience that can be. Moreover, by closing the excavating bucket 2 and letting it bite, the excavating bucket 2 can be easily and surely mounted and used in a required time of about several minutes. On the contrary, since the excavation bucket 2 can be removed by opening it, it is easy to use and the progress of excavation work can be performed extremely efficiently.

Further, at the time of cutting or cutting the pine piles b ₁ or b ₂ , since the steady rest is performed by the reaction force plate 5 that penetrates deeply into the ground, it can be processed without roughening the groove wall surface,
A high degree of verticality of the groove wall surface can be secured. Therefore, it contributes to the construction of an underground continuous underground wall with good quality, accuracy, and wall condition even in the place where the underground stake piles project.

[Brief description of drawings]

FIG. 1 is an elevational view showing a use state of a jig for treating underground pine piles according to the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1,
FIG. 3 and FIG. 4 are a plan view and a vertical sectional view briefly showing the relationship with the underground pine pile when constructing an underground underground wall.

Claims (1)

[Scope of utility model registration request] 1. A box structure having an opening (8) of a size and shape which allows an excavation bucket (2) to be closed and bite at an upper end thereof, and is provided at a substantially central portion inside the opening (8). The excavation blades (2a) (2) of the closed excavation bucket (2)
brackets (3) (3) to which a) bite are provided,
One side of the box structure is formed as a reaction force plate (5) which penetrates deeply into the ground, and the lower end of the opposite side is uneven as a pine pile cutter blade (4) which penetrates shallowly into the ground. It is formed, is attached to the tip of the excavation bucket (2), and the underground pine pile (b) protruding to the excavation portion is treated so as to be cut off by the pine pile cutter blade (4). A jig for processing underground pine piles protruding from the excavation area.