JP4205271B2 - Slime recovery device for drilling machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slime recovery device for a drilling machine, and more particularly to a slime recovery device that can improve the working environment in which a drilling operation is performed.
[0002]
[Prior art]
A drilling machine such as a rotary percussion is usually used for natural drilling in slope-reinforcing earthwork using a reinforcing bar anchor. As a drilling method in this case, natural drilling is performed while supplying drilling coolant such as drilling water and air, and the drilling slime contains only excavated soil and water, Even if the slime treatment is not performed at the time of construction, the effect on the slope is only to the extent that the slime adheres as dirt, and there is almost no possibility of affecting the vegetation work performed after the construction.
[0003]
Further, even when slime treatment is performed, processing such as drilling water is easy. For example, water may be collected and muddy water treatment may be performed. However, in the case of natural drilling while jetting a solidified drilling material such as cement milk at the time of slope reinforcement, such as the jet bolt method, there has been a technical problem described below.
[0004]
[Problems to be solved by the invention]
That is, when a natural drilling is performed while injecting a solidified drilling material such as cement milk at the time of slope reinforcement, a drilling slime in which the excavated soil and a solidified drilling material such as cement milk are mixed is It flows out from the mouth of the hole.
[0005]
When the drilling slime containing the solidified material drilling material flows out in this way, the slope is contaminated and solidified with the passage of time, which impairs the aesthetic after construction. Moreover, since it has a bad influence on the construction of the vegetation work performed after this, the troublesome work, such as shaving off the contaminated part thinly, was forced.
[0006]
Moreover, since the drilling slime containing the solidified material drilling material becomes mud, there is a problem that the working environment is deteriorated and the working efficiency is also adversely affected.
[0007]
The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a drilling machine capable of preventing slope contamination by excavation slime and maintaining a good working environment. An object of the present invention is to provide a slime recovery device.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is arranged at a predetermined interval on the outer periphery of a drilling rod for drilling a natural ground by injecting a solidified drilling material such as cement milk from the tip, A hollow cylindrical cylinder part that forms an annular space between the outer peripheral surface of the drilling rod, a packer that is fixed to the outer periphery of the cylinder part, and expands and contracts by fluid injection and removal, and the cylinder part A rod seal portion that is mounted on the rear end side and seals the rear end side of the annular space portion in a fluid-tight manner in a state where the drilling rod can be moved forward and backward, and communicated with the annular space portion. A slime recovery hose, and the packer has a flexible bag fixed to the outer periphery of the cylinder and a fluid injection hose communicating with the bag, and the cylinder is formed in advance. inserted into the mouth portion of the drilling which is the accepted Through the fluid injection hose sexual bag, by expanded by injecting fluid was said bag body so as to press the inner surface of the drilling.
According to the slime recovery device for a hole drilling machine configured in this way, it is mounted on the rear end side of the cylinder portion, and the rear end side of the annular space is liquid-tight while the drill rod can be moved back and forth and rotated. Therefore, the annular space formed between the drilling rod and the cylinder portion is open at the front end side and closed at the rear end side by the rod seal portion.
In addition, the mouth of the natural drilling hole is expanded against the inner surface of the natural drilling hole by expanding the diameter of the packer provided on the outer periphery of the cylinder portion by fluid injection, so the drilling hole is blocked at this part. ing.
Therefore, the drilling slime flowing in the ground drilling hole from the front end side to the rear end side of the drilling rod is housed in this annular space part, and then through the slime recovery hose communicated with the annular space part, It can be collected in place, thereby preventing slope contamination of the drilling slime.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings. 1 to 4 show an embodiment of a slime recovery device for a hole drilling machine according to the present invention.
[0010]
The recovery device shown in the figure shows a case where the present invention is applied to the jet bolt method, and the slime recovery device 10 includes a cylinder portion 12, a packer 14, and a rod as shown in detail in FIG. A seal portion 16 and a slime recovery hose 18 are provided.
[0011]
The cylinder portion 12 includes a main body 12c made of a hollow cylindrical steel member having front and rear end openings 12a and 12b provided at both ends, and the main body 12c is spaced from the outer periphery of the drilling rod 20 at a predetermined interval. By arranging them concentrically, an annular space portion 22 is formed between the inner peripheral surface of the cylinder portion 12 and the outer peripheral surface of the drilling rod 20.
[0012]
The packer 14 expands the diameter by injecting a fluid, for example, a gas such as compressed air or a liquid such as water, and contracts by eliminating the fluid. The flexible pack 14a and the fluid injecting hose 14b.
[0013]
In the case of the present embodiment, the flexible bag body 14a uses compressed air as a fluid for expanding and contracting the diameter, so that an airtight rubber bag is used and the inner peripheral surface is sealed in a ring shape. Is fixed to the outer peripheral surface of the central portion of the cylinder portion 12 by bonding or the like. In addition, what is necessary is just to make the bag 14a liquid-tight when using a liquid for a fluid.
[0014]
One end of the fluid injection hose 14b is connected to the flexible bag 14a, and a compressor for supplying compressed air (not shown) and a vacuum pump for removing the compressed air are installed on the other end. Has been. Note that the compressed air may be removed by natural evacuation by the elastic contraction force of the flexible bag 14a.
[0015]
The rod seal portion 16 is attached to the rear end side of the cylinder portion 12, and can move the drill rod 20 back and forth between the outer peripheral surface of the drill rod 20 and the inner peripheral surface of the cylinder portion 12, and rotate. The liquid-tight sealing is possible, and is made of, for example, rubber or soft synthetic resin, and includes a disk portion 16a and a truncated cone-shaped protrusion 16b.
[0016]
The frustoconical protrusion 16b is integrally formed on one end surface on the central axis of the disk portion 16a, and a through hole 16c is formed at the center of these members. The rod seal portion 16 configured as described above is inserted into the through hole 16c so that the drilling rod 20 penetrates.
[0017]
At this time, the protruding portion 16b is disposed so as to be positioned on the cylinder portion 12 side, and the rear end opening portion 12b of the cylinder portion 12 is brought into contact with the end surface of the disk portion 16a. When the rod seal portion 16 is mounted on the cylinder portion 12 in this manner, the annular space portion 22 is opened on the front end side of the cylinder portion 12 and the rear end side is closed by the rod seal portion 16.
[0018]
The slime recovery hose 18 is connected so that one end side communicates with the inside of the annular space part 22 closed at the rear end side by the rod seal part 16, and the other end side extends to a predetermined slime recovery place.
[0019]
In addition, the member shown with the code | symbol 24 in FIG. 1 is an attachment part to the guide cell 26 with which the drilling rod 20 was mounted | worn, Comprising: Structure which can be firmly mounted to the guide cell of various types of drilling machines Can be adopted.
[0020]
The usage method of the slime collection apparatus 10 comprised as mentioned above is demonstrated according to FIGS. When drilling the slope ground 28 using the slime recovery device 10, the recovery device 10 is attached to the distal end side of the drilling rod 20 as shown in FIG. 2.
[0021]
In the drilling rod 20 for the jet bolt method, a supply passage for a solidified drilling material A such as cement milk is provided inside, and an injection port 30 for the drilling material A is provided at the tip.
[0022]
While the slime recovery device 10 is mounted on the rear end side of the drilling rod 20, the rear end edge moves the swivel 32 for supplying the drilling material A and the drilling rod 20 in the front-rear direction, A drifter 34 is attached for rotation as necessary.
[0023]
The drifter 34 is supported by the guide cell 26 so as to be movable back and forth. The guide cell 26 is attached to and supported by the tip of a multi-indirect structure boom 36 of a hydraulically driven heavy machine such as a backhoe. It is supported by a base machine 38 of the type.
[0024]
When mounting the recovery device 10 to the drilling rod 20, the drilling rod 20 is mounted so as to penetrate the rod seal portion 16 as shown in FIGS. 1 and 3. Then, the solidified drilling material A can be supplied to the swivel 32, the multi-indirect structure of the boom 36 is operated, the drilling rod 20 is positioned at a predetermined position, and the drilling of the slope slope 28 is prepared. do.
[0025]
At this time, the packer 14 excludes the compressed air from the flexible bag body 14a to be in a contracted state, and connects the fluid injection hose 14b to a compressor that supplies the compressed air. When the flexible bag 14a is contracted, it may be contracted by its elasticity, or the internal air may be sucked out by a vacuum pump or the like.
[0026]
The slime recovery hose 18 is connected to a slime storage pit or the like. Then, when such preparatory work is completed, as shown in FIG. 2, for example, another means that does not involve the injection of the drilling material A in order to completely prevent the dirt on the slope by the drilling material A Thus, a hole 40 having a predetermined length, for example, a length substantially corresponding to the entire length of the cylinder portion 12 is formed, and when the hole 40 is formed, the diameter of the packer 14 is increased.
[0027]
When expanding the diameter of the packer 14, the guide cell 26 is moved forward, the cylinder part 12 is positioned at the mouth part of the hole 40, and the compressed air is introduced into the flexible bag 14a via the injection hose 14b. Inject.
[0028]
When the diameter of the flexible bag 14a is increased by injecting compressed air, the outer peripheral edge is pressed against the inner peripheral surface of the hole 40 as shown in FIG. 3, and the hole 40 is blocked by the packer 14 at the mouth. Is done.
[0029]
When the diameter expansion operation of the packer 14 is completed, the penetration operation of the drill rod 20 is resumed while maintaining the diameter expansion state of the packer 14. When the penetration operation is resumed and the drilling rod 20 is penetrated into the slope ground 28 by the drifter 34 while the drilling material A is sprayed from the injection port 30 of the drilling rod 20 toward the ground, On the tip side of the hole rod 20, a drilling slime B in which the excavated earth and sand of the natural ground 28 and the hole drilling material A are mixed is generated.
[0030]
The drilling slime B generated on the tip side of the drilling rod 20 passes between the drilling rod 20 and the drilling hole 40 and is gradually pushed out to the mouth side.
[0031]
At this time, the slime recovery device 10 is disposed on the mouth side of the hole 40, and the recovery device 10 includes a hole rod between the outer peripheral surface of the hole rod 20 and the inner periphery of the cylinder portion 12. 20 has a rod seal portion 16 that can move forward and backward and is liquid-tightly sealed in a rotatable state, and therefore the annular space portion 22 formed between the drilling rod 20 and the cylinder portion 12 is The front end side is open, and the rear end side is closed by the rod seal portion 16.
[0032]
Further, the mouth of the ground drilling hole 40 is closed by expanding the diameter of the packer 14 provided on the outer periphery of the cylinder portion 12 by injecting compressed air and pressing the inner surface of the ground drilling hole 40.
[0033]
Therefore, the drilling slime B flowing in the ground drilling hole 40 from the front end side to the rear end side of the drilling rod 20 is accommodated in the annular space portion 22 and then recovered in the slime space communicated with the annular space portion 22. It can be collected at a predetermined location via the hose 18.
[0034]
In this way, when the drilling slime B is collected and penetrated into the slope ground 28 of the drilling rod 20 by a predetermined length (see FIG. 4), the compressed air in the packer 14 is sucked by a vacuum pump or the like. When the flexible bag body 14a is contracted and the drilling rod 20 is recovered, and the drilling material A is solidified by inserting a reinforcing bar anchor or the like, one reinforcing member is formed.
[0035]
Now, according to the slime recovery device 10 configured as described above, the drilling slime mixed with the solidified drilling material A can be guided to a slime storage pit provided at a predetermined position by the recovery hose 18, It is possible to prevent the contamination of the slope, and to impair the aesthetics after the construction and to adversely affect the vegetation construction performed thereafter.
[0036]
Further, when the slope contamination is prevented, it is not necessary to perform the scraping work and the work environment is kept good, so that the work efficiency is improved.
[0037]
【The invention's effect】
As described above in detail, according to the slime recovery device for a drilling machine according to the present invention, it is possible to prevent slope contamination by excavation slime and maintain a good working environment.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a slime recovery device for a drilling machine according to the present invention.
FIG. 2 is an explanatory diagram of an initial process when drilling a slope mountain using the slime recovery device of FIG. 1;
FIG. 3 is an enlarged view of a main part of FIG. 2;
4 is an explanatory diagram of a process performed subsequent to the process of FIG. 2. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Slime collection | recovery apparatus 12 Cylinder part 14 Packer 14a Flexible bag 14b Fluid injection | pouring hose 16 Rod seal part 20 Drilling rod 22 Annular space 28 Slope ground 40 40 Ground drilling

Claims (1)

An annular space is disposed between the outer periphery of the drilling rod and the outer peripheral surface of the drilling rod, which is disposed on the outer periphery of the drilling rod for injecting a solidified drilling material such as cement milk from the tip to drill a natural ground. A hollow cylindrical cylinder part forming the part;
A packer that is fixed to the outer periphery of the cylinder part and expands and contracts by injecting and removing fluid;
A rod seal portion that is mounted on the rear end side of the cylinder portion, and that seals the rear end side of the annular space portion in a fluid-tight manner in a rotatable state so that the drill rod can be moved back and forth;
A slime recovery hose communicated with the annular space ,
The packer has a flexible bag fixed to the outer periphery of the cylinder part, and a fluid injection hose communicating with the bag.
The cylinder part is inserted into a mouth part of a pre-formed drilling hole, and the diameter is expanded by injecting fluid into the flexible bag body through the fluid injection hose, and the bag body is A slime recovery device for a drilling machine, wherein the inner surface of the drilling hole is pressed.

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