JPS6098016A - Rocking-type continuous ditcher - Google Patents

Abstract

PURPOSE:To control the excavating direction by a method that a hammer and bits are juxtaposed in a sealed casing, and the top of the casing is connected to a supporting member so that it can freely rock right and left, and stems are moved up and down along a guide pile. CONSTITUTION:The sealed casing 2 is suspended via stems 17 and 18 by a vertically fixed frame 29 supported longitudinally by a moving truck apparatus 28. Then, the first slot 27 is excavated, and a guide pile 32 is fitted, and excavation is carried out with the bits 6 by moving the stems 17 and 18 downward. At the time of excavating the slot 27, a reciprocating jack 22 is operated, and rods 5 fixed in the casing 2 are moved in the right and left directions in a deviated manner to excavate the remainder of the slot 27. By this method, even a deep ditch can be efficiently excavated, and the ground between the bits or a protion left unexcavated by the bits can be clearly scraped off by right and left rocking motion.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous trench excavator for constructing a water-blocking wall or the like in the ground.

Conventionally, such an excavator has a plurality of rods having a bit at the lower end arranged side by side on a frame so that they can move up and down as well as rotate, and the rods are rotated by an appropriate drive mechanism and the rods are A device is used in which the upper end surface is struck by a single strike device H to drill a slot with the tip of the bit, but when the rod is added as the slot is drilled. As the length of the rod increases, it becomes difficult to transmit the impact force from the impact device to the bit, and as a result, the digging capacity is significantly reduced, the overall weight increases, and the hanging device becomes larger. The problem was that the direction could not be controlled.

Furthermore, if there is a gap between adjacent bits, it is of course impossible to perform smooth excavation, and even if part of the outer circumference of the bits is arranged so that they overlap when viewed from the bottom side, it will not be possible to perform smooth excavation. This method has problems such as difficulty in constructing a continuous wall with a constant thickness because only a groove having a cross-sectional shape in which the holes are partially overlapped can be obtained.

In order to eliminate such problems, the present invention has a plurality of hammers that are integrally incorporated with a mechanism for moving up and down a rod having a bit at the lower end by an impact, and the bit protrudes downward in a sealed casing. The sealed casing is connected to the supporting member in a horizontally swingable manner by jacks, etc., and the supporting member is suspended by the stem, and excavation is performed while moving the sealed casing downward. The present invention provides an oscillating continuous trench excavator characterized by the following configuration.

To explain the embodiment of the present invention with reference to the drawings, (1) is a drill unit in which a plurality of downs (two in the figure, but more may be used) are housed in a rectangular box-shaped sealed casing (2). It is made by arranging and storing Zapol hammers (3) (3) in parallel in the horizontal direction.

The down-the-hole hammer (3) has a rod (5) disposed at the lower part of the cylinder (4) so as to be movable up and down by a spline (lυ), and the lower end of the rod (5) protruding downward from the A cylinder (4) is sealed. Side of casing (2) I'l
l (width in the direction perpendicular to the parallel direction of the hammers) is integrally provided with a bit (6) having approximately the same diameter, and the piston (7) at the upper end of the rod is connected to a hydraulic hose or an air hose (8).
It is configured to be moved up and down impulsively by pressure fluid supplied from flt-.

These hammers (3) are rotatably supported only in the circumferential direction by bearings θ)) within the sealed casing (2), and a gear (■) is fixed to the upper end of the cylinder (4). ), the hammer (3) (3) is rotated by meshing with the pinion (1 field) fixed to the rotating shaft of the hydraulic motor 0, which is fixed at a proper place in the shaft. It is.

0→ is a bracket that is integrally protruded from the upper end surface of the sealed casing (2), and the center part of the bracket is attached to the center of the supporting member (which is wider than the sealed casing (2) by 111 mm) to the bin 06). It is pivoted so that it can rotate freely. The lower ends of hollow stems αη are fixed to both sides of the upper end surface of the support member, and the sealed casing (2) is suspended from these hollow stems via the support member.

In addition, a pressure fluid supply hose (8) such as the above-mentioned hydraulic hose
communicates with the cylinder (4) of each hammer (3) via a universal joint (19), and one hollow stem θ
It is connected to a drive source Qυ such as a hydraulic pump or compressor installed on the ground through the inside of η.

2) is a mud draining pipe that is passed through the other hollow stem (13) and its lower end (20a) is opened downward from the support part θ.

Note that the hydraulic hose of the hydraulic motor (b) is also connected to the drive source using the hollow stem (lη) in the same manner as described above.

(A) is a reciprocating jack that is pivotally attached to a long hole (2) drilled in the upper end of the bracket of the sealed casing (2) by means of a pin. ) is connected to ) so that the reciprocating movement of the rod (a) causes the sealed casing (2) to swing left and right about the pivot pin 06) of the support member.

(a) is a direction correction plate attached to the front and rear surfaces of the support member) and the sealed casing (2), and the slot (goods) to be drilled.
It is brought into contact with the inner wall surface of the

In order to excavate a continuous trench with the excavator configured as described above, as shown in FIG. It is suspended by a vertical fixed frame (b) which is erected and supported by 28.

This frame (29) is equipped with a movable joint that moves up and down by driving a chain that is hooked to a sprocket so that it can move up and down, and the stems (17) and (18) The upper end is removably fixed.

Now, move the mobile trolley device (28
), and while gradually lowering ) to the stem αη, the thrower 11η is excavated to a desired depth using an excavator.

After excavating the first throat lη, a guide pile (32) is built on the inner wall surface of one side of the spout.
and the inner wall surface of one side of the slot being excavated, the stem Oη08
) While slidingly touching the member @3 (Incorporated) protruding from the lower end of ), lower the stem (I?) (18) and insert the bit (6).
) Perform excavation according to (6). Note that this member @3I (Incorporated) is also provided at the upper part of the member.

Excavation of the throat IJη is carried out in muddy water, and the guide pile (3) is designed to prevent slime from entering the slot □□□ side that is currently being excavated into the already excavated slot η, and to improve the accuracy of excavation. It is something.

To excavate 6υ of ground, the gear (10) is rotated to rotate the rod (5) together with the cylinder (4) while supplying fluid pressure into the cylinder (4).
) is moved up and down with an impact using a bit (6), and the excavated earth, sand and gravel are discharged to the ground together with muddy water through the spout (20a) and into the mud drain pipe (). When a slot of a certain depth (2 forces) is excavated, a hollow stem (lη(e)) is added to excavate to the desired depth.

Furthermore, when drilling the slot aη, the reciprocating jack (A) is operated to deflect and rotate the rod (5) (5) disposed in the sealed casing (2) to the left or right. ) (6) Scrape off the ground between (6) and the remaining part excavated by the bit (6), and excavate so that the opposing inner wall surface in the length direction becomes a straight plane as shown in Figure 4. We will continue to do so.

The slots excavated in this manner are continuously excavated in the longitudinal direction and repeatedly excavated into the ground that momentarily contacts the ground, thereby providing a continuous groove η of a desired length.

In addition, in the above embodiment, the sealed casing (2)
The rod (5) of the hammer (3) (3) was installed in the vertical direction, but as shown in Fig. They may be arranged on the left and right sides of the radial line, in which case the sealed casing (2) can be rotated to the left or right!
Even if the rock white 5) is moved downward in a V position, the excavation 1/
+i ('It always operates in a direction perpendicular to IFQ and no unreasonable force is applied to the rod (5).

As described above, the present invention has a plurality of hammers that excavate by vertically moving and rotating the 11-piece having the lower end ring bit, which are arranged in a sealed casing with the bits protruding downward. The upper end of the sealed casing is connected to a supporting member so as to be swingable left and right, and the lower end of the stem, which is supported so as to be movable up and down by a movable trolley device N such as a Flora mount, is fixed to the supporting member to form a sealed casing. is suspended, the stem is moved up and down along a guide pile, etc., and the sealed casing is configured to swing left and right with respect to the support member by an appropriate mechanism such as a reciprocating jack. Although it is related to an oscillating type continuous trench excavator, a hammer having a rod that moves up and down with impact alone is arranged in a sealed casing, and this casing is suspended by a stem via a support member. Since it is configured to excavate, it is possible to always transmit reliable impact force and rotational force to the bit at the lower end of the rod, regardless of the size of the excavation depth, and therefore, even deep groove holes can be efficiently excavated.Furthermore, The sealed casing with the hammer is configured so that it can be moved left and right by a reciprocating jack, etc., so the ground between the bits and the remaining part dug by the bit can be neatly removed by swinging left and right. The width of the resulting slot can be formed to be the same width as the diameter of the bit over the entire length, and the thickness of the continuous wall that will be built later can be made equal over the entire length, thus achieving high precision. A shape created by continuous grooves can be obtained.

In addition, since the stem on which the sealed casing is suspended is supported so that it can move up and down on a moving cart such as a 70-Ramount, it is possible to accurately move the sealed casing up and down via the stem, and it is also easy to add stems. 1, and it is possible to improve work efficiency.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a partially sectional front view, FIG. 2 is a front view showing an excavated state, FIG. 3 is a simplified side view, and FIG. A plan view of the slot, and FIG. 5 is a partially cutaway front view showing another embodiment of the present invention. (2)... Sealed casing, (3)... Hammer,
(5)...lot, (6)...bit, (b)...
・Stem, O→...Bracket, (B)...Support part removal, (17) (lfl)...Stem, (A)...
Reciprocating jack, (28)...Moving trolley device. Patent applicant Okumura Gumi Co., Ltd.

Claims (1)

[Claims] ■ A plurality of hammers are installed in parallel inside a sealed casing with the bits protruding downward, and the rods with bits at their lower ends are moved up and down with an impact and rotated to perform excavation. is connected to a support member so as to be swingable from side to side, and the lower end of the stem, which is supported so as to be movable up and down by a movable cart device such as a 70-Ramount, is fixed to the support member, the sealed casing is suspended, and the stem is attached to a guide bail. etc., move it up and down, and further,
1. An oscillating continuous groove excavator characterized in that the sealed casing is configured to be oscillated from side to side with respect to a support member by an appropriate mechanism such as a reciprocating jack.