JPH0447733B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a shaft drilling device, more specifically, to a shaft drilling device, and more specifically, to a shaft drilling device for drilling inside a casing tube with a circular cross section, and for constructing a hard hole in a propulsion method, a cast-in-place pile, etc. This invention relates to a pit drilling device used for.

[Conventional technology]

Conventionally, as the above-mentioned hard hole drilling apparatus, one disclosed in, for example, Japanese Patent Application Laid-Open No. 51-26705 has been known.

The equipment uses a crawler crane as the base machine, and is equipped with a tube machine that presses in, pulls out, and swings the casing tube, and an excavation tool that is connected to a wire rope suspended via a pulley at the tip of the boom. A predetermined hard hole can be constructed by excavating the inside of the casing tube press-fitted into the ground using the above-mentioned excavating tool.

[Problem to be solved by the invention]

However, with this device, the excavation equipment is lifted with a wire rope and dropped from a high place, and the impact force is used to excavate inside the casing.
For this reason, the noise and vibration caused by the fall are severe, and it cannot be used to construct hard holes, especially in urban areas where houses are densely populated. In order to eliminate such vibrations and noise during excavation, it is conceivable to use a hydraulically driven excavator instead of the drop type excavator.

On the other hand, in such a device in which a drilling tool is connected to the hanging end of a wire rope, when the drilling tool is lowered to a predetermined position inside the casing tube, the suspended drilling tool turns horizontally and the wire rope is twisted. There is a problem with putting it away. This is a particularly important problem when drilling equipment is hydraulically driven, and the hydraulic hose that connects the drilling equipment to the operator's seat
Repeated twisting can cause damage or, in extreme cases, cause it to come loose from the connection.

Therefore, the problem to be solved by the present invention is to prevent the drilling tool from turning in a hard hole drilling device equipped with a hydraulically driven drilling tool, thereby eliminating damage to the hydraulic hose and enabling efficient drilling. be.

[Means to solve the problem]

In order to solve the above problems, the hard hole drilling equipment of the present invention is equipped with a rotatable boom and a hydraulic winch for winding wire rope on the upper surface of a movable power shovel, and a casing tube is installed at the bottom of the power shovel. At the same time, a tubing machine body with a cylinder that presses in and pulls out the casing tube and swings is attached, and the wire rope extends from the hydraulic winch for winding the wire rope through a wire rope pulley installed at the tip of the boom. The excavator 8 is suspended vertically from the tip of the boom, and a hydraulically driven excavator operated from the driver's seat of the power shovel is connected to the hanging end of the wire rope via a hydraulic hose attached to the boom. can be freely inserted into the casing tube, and a wire rope guide pulley is attached to the boom, and a wire rope twist prevention roller that comes into contact with the inner surface of the casing tube and in a pressed state on the excavation tool to prevent the excavator from horizontally turning. It is characterized by having a .

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The hard hole drilling apparatus of the present invention will be specifically described below based on embodiments shown in the accompanying drawings.

In FIGS. 1 to 3, reference numeral 1 denotes a power shovel, which drives crawler tracks 2 by means of a built-in hydraulic unit (not shown) and can run forward and backward and left and right.

Reference numeral 3 denotes a boom which is attached to the upper part of the power shovel 1 so as to be able to be raised freely by a raising cylinder 4, and the boom 3 has a wire rope pulley 5 attached to its tip.

Similarly, 6 is a hydraulic winch for winding wire rope attached to the rear of the upper part of the power shovel 1.
The wire rope 7 unwound from the winch 6 is
It hangs downward from the tip of the boom 3 via the wire rope pulley 5, and an excavation tool 8 is suspended from the tip.

Various types of excavation tools 8 can be considered, and for example, a hydraulically operated hydro grab manufactured by Hirabayashi Seisakusho Co., Ltd. can be used. This hydro grab expands within the casing tube 15 to take a reaction force to the inner circumferential surface of the casing tube 15, moves the shell with hydraulic pressure, and can excavate the inside of the casing tube 15.

With such a configuration, by driving the wire rope winding winch 6, the excavation tool 8 can be quickly raised and lowered.

Further, reference numeral 9 denotes a hydraulic hose take-up foil provided at the tip of the boom 3 in parallel with the wire rope pulley 5, and the hydraulic hose 10 is connected to the excavation tool 8 via the take-up foil 9.

12 is a wire rope guiding pulley provided in the middle of the boom 3 to prevent contact between the wire rope 7 and the boom 3.

Further, reference numeral 13 denotes a wire rope twist prevention roller provided on the upper part of the excavation tool 8 in order to prevent the wire rope 7 from twisting caused by horizontal turning when the excavation tool 8 descends inside the casing tube 15.

The roller 13 guides the excavating instrument 8 when the excavating instrument 8 is inserted into the casing tube 15, and also prevents the excavating instrument 8 from turning around the vertical axis by coming into contact with the inner surface of the casing tube 15 in a pressed state. Furthermore, the distance between the excavating tool 8 and the inner surface of the casing tube 15 can be kept constant. Therefore, the hydraulic hose 10 connected to the excavation tool 8 can be prevented from being twisted, and the inside of the casing tube 15 can be excavated evenly and efficiently by the excavation tool 8.

Furthermore, 14 is attached to the front part of the power shovel 1 and includes a casing tube 15 for hard hole drilling.
This is the main body of the tubing machine that presses into the ground, pulls it out, and swings it. In this embodiment, the main body includes a hydraulic cylinder 16 that presses in and pulls out the casing tube 15, and a hydraulic cylinder 16 that presses in and pulls out the casing tube 15.
and an outrigger 1 that fixes the tubing machine body 14 to the ground.
It consists of 8 and 19.

Further, the excavating tool 8 is arranged directly above the casing tube 15.

In the above configuration, the wire rope winding winch 6, the excavation tool 8, the casing tube press-in/extraction hydraulic cylinder 16, and the casing tube swing hydraulic cylinder 17 are all derived from the power of the power shovel 1, similar to the crawler track 2. Operated by hydraulics.

Next, excavation work using the hard hole drilling device having the above configuration will be described.

First, after setting the hard hole drilling device at the construction position, the outriggers 18 and 19 are operated to fix the tubing machine body 14.

Next, the casing tube 15 is inserted into the tubing machine 14, and a tightening cylinder (not shown) built in the tubing machine 14 is inserted.
The casing tube 15 is fixed to the tubing machine 14 by.

Subsequently, the press-fitting/extracting hydraulic cylinder 16 and the swinging hydraulic cylinder 17 are operated to swing and press-fit the casing tube 15 into the ground.

Then, the excavation tool 8 is lowered and inserted into the press-fitted casing tube 15 by operating the hydraulic winch 6 and the hydraulic hose take-up reel 9.
A fixed cylinder (not shown) of the excavation tool 8 is operated to press the casing tube 15 against the casing tube 15, and excavation is performed by hydraulic drive while taking a reaction force.

Next, after operating the fixed cylinder again to separate the excavator 8 from the casing tube 15,
The hydraulic winch 6 and the hydraulic hose take-up wheel 9 are operated to lift the soil, move it to a predetermined soil unloading location, and discharge the soil.

These operations are repeated to effectively drill a hard hole. All of these operations can be performed by one person from the driver's seat of the power shovel using hydraulics.

When the excavation work is completed, the press-fitting/extracting hydraulic cylinder 16 and swinging hydraulic cylinder 17 of the tubing machine body 14 are operated again to separate the casing tube 15 from the ground, and the outriggers 18 and 19 are further operated to remove the tube. The bing machine main body 14 is also separated from the ground and moved to the next construction site.

〔Effect of the invention〕

As described above, the present invention prevents the drilling tool inserted into the casing tube from horizontally turning using the wire rope twist prevention roller, and further maintains a constant distance between the drilling tool and the inner surface of the casing tube. can be retained. Therefore, it is possible to prevent damage to the hydraulic hose that connects the excavation tool and the driver's seat, and it is also possible to excavate the inside of the casing tube evenly and efficiently.

[Brief explanation of the drawing]

FIG. 1 is a side view of a hard hole drilling apparatus according to the present invention, FIG. 2 is a plan view, and FIG. 3 is a front view. DESCRIPTION OF SYMBOLS 1... Power shovel, 2... Track, 3... Boom, 4... Raising cylinder, 5... Pulley for wire rope, 6... Hydraulic winch for winding wire rope, 7... Wire rope, 8... Drilling equipment, 9...
...Hydraulic hose winding foil, 10...Hydraulic hose,
12... Wire rope guiding pulley, 13... Wire rope twist prevention roller, 14... Tubing machine body, 15... Casing tube, 16
... Hydraulic cylinder for press-fitting and pulling out casing tube, 17 ... Hydraulic cylinder for swinging casing tube, 18 ... Outrigger, 19 ... Outrigger.

Claims (1)

[Claims] 1 A boom 3 that can freely rotate up and down and a hydraulic winch 6 for winding wire rope are mounted on the upper surface of the power shovel 1 that can run, and the lower part of the power shovel 1 is equipped with a
In addition to inserting the casing tube 15, a tubing machine main body 14 having cylinders 16 and 17 for press-fitting and pulling out the casing tube 15 and swinging is attached, and the wire rope 7 extending from the hydraulic winch 6 for winding the wire rope is attached. The driver's seat of the power shovel 1 is suspended vertically from the tip of the boom 3 via a wire rope pulley 5 provided at the tip of the boom 3, and connected to the suspended end of the wire rope 7 via a hydraulic hose attached to the boom. A hydraulically driven excavation tool 8 operated by a casing tube 15 is connected to the excavation tool 8, so that the excavation tool 8 can be freely inserted into the casing tube 15, and a wire rope guiding pulley 12 is attached to the boom 3. The excavator 8 is in contact with the inner surface of the
A vertical hole drilling device characterized in that a wire rope twist prevention roller 13 is attached to prevent the wire rope from horizontally turning.