JPS62101710A - Auger head disengager of excavating casing - Google Patents

Abstract

PURPOSE:To enhance the power saving and safety characteristics of operations by providing a grasper that grasps up the conical head of a movable lever to move a disengaging and rocking piece and separates an auger head from an excavating casing. CONSTITUTION:A disengaging and rocking piece 17 and a movable lever 23 are pivotally attached to an auger head body, and a grasper 33 connected with a wire is combined with them, which is used for a drain pipe work. When the grasper 33 connected with wire is hung down in a casing 20 and contacted with the conical head 25 of a movable lever 23, the grasper 33 is opened in (-)a truncated chevron shape form by the contact pressure and the conical head 25 is coupled. When the wire is pulled, the grasper 33 is closed and the conical head 25 is grasped and pulled up. The wedge piece 31 of the lever 23 is drawn out of the fitting portion of the auger head, the curved piece 22 of the piece 17 provided between connecting levers 28 is moved upwards, the engaging claw 19 is separated from the engaging hole 21 of the casing 20, and the auger head is lifted up with the grasper 33.

Description

DETAILED DESCRIPTION OF THE INVENTION (Objects of the Invention and Problems of the Prior Art) The present invention relates to an auger head engagement/disengagement device for a new 111K layer agent casing for drain pipe burying.

In recent years, earthquake-resistant construction methods have been used to improve the ground or build foundations for buildings.

This is called the Asahiban liquefaction countermeasure construction method. Liquefaction refers to seismic intensity 5 when the water level below the pond is high and the ground is loose and sandy.
When the above-mentioned JtII earthquake occurs, the water pressure between sand particles increases rapidly, causing the ground to become liquid-like, causing damage such as destruction of structures, overturning, uneven subsidence, or surfacing). .

Therefore, as a countermeasure against the above-mentioned ground liquefaction, a drain pipe construction method for draining underground water is being considered. This is a method of burying a large drain pipe made of synthetic resin in the form of a mesh, with a diameter of 5 to 10 cm, and burying it underground in the same space as the foundation pile of the structure.

However, in the drain pipe construction method, an effective auger head that is attached to the wall-cut casing in which the drain pipe is buried has not yet been developed.

The applicant has worked on the development of the above auger head as a civil engineer M# in the industry, and as a result has come to provide a new auger head for old casings that is effective for burying drain pipes and has excellent workability. It is. The IF details of the present invention will be explained below.

(Structure and Embodiments of the Present Invention) The structure of the auger head of the present invention can be roughly divided into a main body portion lO of the auger head, and a casing for the auger head main body as shown in FIGS. A movable rod 23 that makes the movable rod feel rocking, and a movable rod 23 that allows the movable rod to be attached to or detached from the body. The grasping body 33 becomes better.

First, the thick blade part 11 at the lower tip of the auger head main body 10a
1! A vertically concave mounting part 1 that extends upward and downward from the top of the J-P41.
2, except for the upper support part 15! As shown in the side sectional view of FIG. 2, it has a structure in which two elongated rectangular plate pieces are placed side by side, and a slotted window 14 is provided between the plate pieces to pass through on both sides. Reference numeral 13 indicates an M stop portion of the mounting portion. At the support part of the 15U movable rod 23, 1
6 is a through hole for the movable rod. Reference numeral 17 denotes an engaging/disengaging M moving piece, which is an opening between the two plate pieces that make up the mounting portion 12! i A locking mold 19 is provided protruding from one side of the lower part of the window 14 that is swingably supported by a pivot pin 18, and a tape-shaped mounting hole 21 is provided in the casing 20 provided with the spiral portion 42. The auger head is attached to and detached from the auger head by means of an engagement type that is provided and engaged with and detached from the auger head.

Reference numeral 22 is a beak-shaped curved piece that is bent upward and has its tip protruding from the punch 14, and further extends to the latch 30 between the connecting rods 28 and 28ffl of the movable rod 23 on the right side of the drawing.

The movable rod 23 is inserted into the through hole 1 in the upper part of the mounting part of the auger head body.
6 and is vertically movably inserted and supported, and a circle a1 portion 25 is provided on the inserted support shaft 26. Around the bottom of the conical head is a recessed part 27
will be established. 28 is a connecting rod with nine connecting rods, which are two plate pieces at the bottom of the support shaft facing each other, and the connecting rod plate J! is similar to the mounting part 12 of the auger head body. X and the opposing spacing 30 are configured to be the same.

The curved piece 22 of the oscillating piece for engaging and disengaging is inserted into the space 30 between the window 14 of the auger head mounting portion and the '4 tie rod 28, and swings freely. 31 is the connecting rod i! ! A wedge piece pivotally supported by the necessary pin 32 is installed as a removable IMK in the cut-out window space between the lower part of the locking/disengaging swing piece 17 and the closed mounting part 13.

33 is a gripping body for the circle #head 25 of the movable rod, as shown in Figures 3 and 4.
As shown in the figure, a gripping part 34 in which two so-called half-split cylindrical bodies are opposed is provided at the bottom, and a forked part 35 is installed above the gripping part 34, and the other forked part is placed within the space between the two forked parts. A portion 35' is provided oppositely,
The tips of the respective forked portions are provided in a protruding manner so as to enter alternately, and both of the assembled forked portions are connected together by a connecting pin 36, and the #14 body 33 is pivotally supported so as to be able to open and close.

Further, a connecting pin 37 for connecting a wire 38 is attached to each forked portion. A tapered space 39 is provided inside the two-part protrusion 34, and the conical head 25 of the movable rod is fitted and engaged in the conical space formed by mating with each other. Reference numeral 40 denotes an engaging rib that serves as the inner base KH of the gripping portion.

The gripping body 33 can be freely moved by the connecting pin 36, so it can be opened freely by manual operation by the cutter or by pressure from the bottom, and the gripping part can be secured by lifting it with the wire 38 passed to the hanging pin 37. The rib 40 is the concave portion 27 of the conical head of the movable rod.
The gripping body and auger head are lifted up together.

(Example of use of the present invention) The present invention is a structure as described above, and is used as a drain pipe construction method. Since this is a casing auger with a Km construction, the auger head main body, the locking/disengaging rocking piece 17 and the movable rod 23 are attached so as to be able to pivot freely, and the gripping body 33 to which the wire is hooked and passed is combined with the auger head body. This will effectively advance the drain pipe construction method.

To illustrate the construction according to the present invention, as shown in the tlcS diagram, 9 casings 20 are first supported by an excavator m, and the lower end of the 9 casings is made g.
aR inserts and attaches the auger head 10. After rotating and digging the casing in the order shown in M6 diagrams (a) to (g), attach a gripping body with a wire wrapped around it to the lower end of the casing and let it grip the auger head. ,
The auger head is automatically disengaged from the casing and lifted to the ground through the action of the movable rod and the engagement/disengagement rocking piece.

The lifted auger head is removed from the body by a worker. Next, after inserting the drain pipe p into the casing, the casing is rotated in the opposite direction.] The drain pipe p is cut out and buried underground.

(Operations and Effects of the Present Invention) The present invention relates to the above-mentioned structure and construction, and to describe its operation, an N-shaped body stretched over a wire is suspended in a casing and is applied to the conical head 25 of the movable rod. When brought into contact, the grip body easily opens into a shape due to the contact pressure, engages the conical head, and connects the wire to σ. is the attachment/detachment rocking piece and the auger head mounting/closing part).
The curved piece 22 of the engagement/disengagement rocking piece inserted between the two is clamped and moved upward, and the lower part is swung to the right in the drawing, so that the engagement mold 19 comes out of the engagement hole 21 of the casing, and the auger head is gripped. lifted up with the body. When attaching the auger head to the casing, by moving the movable rod downward, the wedge piece at the lower end can be easily inserted between the engagement and disengagement swinging piece and the closing part of the mounting part, and the engagement and disengagement swinging piece can be swung in the opposite direction. The auger head and the casing are inseparably connected to each other through the moving and protruding locking die 19.

Next, as a feature and effect of the present invention, as shown in the above-mentioned construction example on Ml, since the installation of the auger head is operated by the worker on the ground, it is not necessary to perform the installation operation at a high place using a workbench, and the work is simplified. Labor saving and high safety.

Secondly, the auger head of the present invention has a mounting part removably installed inside the casing, and has a Kf# structure so that the tip blade part protrudes. Because the construction is removable, the construction can be carried out smoothly and stably without having to lift or float the inserted drain pipe during cutting. .

In addition, the swinging piece and movable rod of the present invention are installed so as to be inserted into the opening and window of the auger head body, so that they do not damage the auger head lifting opening or the inner wall of the casing, or prevent the rod from being hooked. This will not impede entry/exit operations.

The gripping action of the movable rod by the sliding body is reliable and does not come off easily, and removal is also easy.

It has excellent structural strength and is extremely effective for drain pipe construction using excavation.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 2 is a right sectional view of Fig. 1, Fig. 3 is a front view when the grip body is opened, and Fig. 4 is a plane view of the grip body. Figures 5 and 5 are mechanical equipment for drain pipe construction, and Figures 6 (a) to 6 (g) are schematic diagrams showing the construction order of the drain pipe construction method using the auger head of the present invention. In the drawing, IO is the auger head body, 12 is the mounting part,
14 is a drawing window, 15 is a support part, 16 is a frog insertion hole, 17 is a locking/disengaging swing piece, 19 is a locking type, 20 is a casing, 22 is a curved piece, 23 is a movable rod, 25 is a conical head, 26 is the spindle, 2
8 is a connecting rod, 30 is a gap, 31 is a wedge piece, 33 is a gripping body, 34 is a gripping portion, 35 is a forked portion, 36 is a connecting pin, 3
7 is a hanging pin, 38 is a wire, and p is a drain pipe. Figure 3 Figure 4 Figure 5 Figure 6

Claims (3)

[Claims] (1) In an auger head that is removably attached to the tip of an excavation casing, an engagement and disengagement rocking piece that is pivoted to the mounting portion of the auger head and engages with or detaches from the excavation casing; A movable rod that is assembled in a vertically connected manner to swing the engagement/disengagement rocking piece, and a gripping body that grasps the conical head of the movable rod and detaches the auger head from the excavation casing. Auger head engagement/disengagement device for excavation casing featuring (2) A hook for hooking to the excavation casing is provided on one side of the lower part, a beak-shaped curved piece is protruded from the other side of the upper part, and the approximately central portion is pivoted to the mounting part of the auger head using a pivot pin. The engagement/disengagement rocking piece according to claim 1, characterized in that it is movably supported. (3) The mounting part of the auger head is composed of a conical head provided on the support shaft, a connecting rod arranged in parallel at intervals at the lower part of the support shaft, and a wedge piece pivoted to the lower part of the connecting rod. A movable rod (4) according to claim 1, characterized in that the movable rod (4) is incorporated in the rod so as to be able to move up and down. It is a pairing body consisting of a gripping part and a forked part on the upper part, and the forked parts are arranged side by side, and the pairing part is pivotally supported by a connecting pin so that it can be opened and closed, and a wire is attached to each of the forked parts. The gripping body according to claim 1, characterized in that a hanging pin is attached.