JP6544724B2 - Pipe anchor burying device - Google Patents

Description

The present invention relates to a pipe anchor burying device. Specifically, the present invention relates to a burial device used when a pipe anchor used when installing an avalanche prevention fence installed on a slope or the like, a mount of a solar cell panel or the like is buried on a slope or the like.

  There are two types of snowfall fences, mainly fixed fences and hanging fences, due to the difference in the fixing method, for snowfall prevention fences installed on slopes etc., but due to the balance with the simplicity of construction and cost ing. The avalanche prevention fence with the structure of the suspension fence secures the resistance to the downward direction by being connected with the wire rope supported by the pipe anchor driven into the ground above it, and has a certain strength against avalanches etc. It is supposed to hold

When installing such a pipe anchor, after carrying a rock drilling machine (excavator), a driving stand, etc. to a construction site and assembling it on site, a pipe anchor driving operation is performed. Conventionally, the driving operation is performed while excavating the ground while rotating a ring bit screwed to the tip of the pipe anchor with the pipe anchor while applying vibration and impact to the pipe anchor with a rock drilling machine or an drilling machine. In that case, it is necessary to carry out work while supplying a large amount of water to the drilling hole because soil removal from the ground is necessary, and oil leaking from the body of the drilling machine penetrates into the ground with water, so the environment An adverse effect on the body was inevitable.

Therefore, the inventor of the present patent application has developed the following environment-friendly pipe anchor installation device. That is, as shown in FIG. 9, a pipe anchor construction apparatus 100 developed by the inventor of the present application is configured to include a driving stand 102, an excavator 104, a compressor 106, an oil removing tank 108, etc. By guiding the oil leaking from the excavator 104 from the exhaust hose to the oil removal tank 108, it is separated into air and oil and recovered, and installation of a pipe anchor is enabled without leaving oil on the construction site. According to this, in addition to not scattering the oil on the site, it also becomes possible simultaneously to reduce the noise at the time of the driving operation, which has a great effect on the environmental improvement.

On the other hand, there has been proposed a construction method which does not use a ring bit at the time of driving a pipe anchor. In this construction method, the ring bit is previously connected to the lower end of the pipe anchor in the conventional method, and the ring bit is left as it is in the ground after the pipe anchor is driven, so the ring bit is wasted. It is a technology made to solve the problem that has been the cause of the cost increase.
As an example of such a technique, the “embedding method of a pipe anchor” described in Japanese Patent No. 4707491 is known.

The burial method described in the same publication can expand the diameter of the bit to be excavated and use a bit head capable of reducing the diameter, securing propulsive force while simultaneously applying rotation and impact by the bit at the time of excavation. Also, the pipe anchor is configured to be embedded without transmitting the rotational force. According to this, along with not using the ring bit, it is supposed that the pipe anchor can be buried quickly and inexpensively not only in the vertical direction but also on the slope. In addition, since it is not necessary to rotate the pipe anchor, it is also possible to use a surface-treated steel pipe, and at the same time, it has the effect that filling of the anticorrosion cement after embedding becomes unnecessary.

Furthermore, the invention described in Japanese Patent No. 5442187 is made for "an anchor for a suspended structure of a slope" having relevance to the invention of Patent Document 1 described above, and similarly, the inside of the tip of the pipe anchor is similarly In addition, the propulsive force receiving portion is previously installed, and the striking force by the bit hammer contacting the propulsive force receiving portion secures the driving force of the pipe anchor to the ground.

Patent No. 4707491 Patent No. 5442187

The “embedding method of a pipe anchor” described in Patent Document 1 mentioned above and the “anchor for suspended structure of slope” described in Patent Document 2 are for securing the propulsive force of the pipe anchor at the time of embedding. Attach the propulsive force receiving part inside the tip of the pipe anchor (near the lower end), apply the propulsive force to the underground to the pipe anchor by making the flange of the bit abut on this propulsive force receiving part It is like that.

For this reason, it is necessary to attach a steel ring (as a propulsive force receiving portion) in advance to the pipe anchor by welding or the like, which causes an increase in the time and effort required for processing and an increase in cost. In particular, in the case where the propelling force receiving portion is attached by welding, further work is required, such as re-plating by heat.

Further, along with the processing of the pipe anchor, the digging bit also needs to be provided with a flange in order to make a striking force contact with the propulsive force receiving portion. As a result, a problem arises in that the preparation and management of the drilling tool are complicated, for example, a plurality of types of drilling bits are required according to the inner diameter of the pipe anchor.

The present invention has been made in view of such circumstances, and the processing for the pipe anchor to be embedded can be minimized, and the sufficient propulsive force to the ground can be provided without rotating the pipe anchor. It is an object of the present invention to provide a pipe anchor burying device capable of

In order to achieve the above object, the invention according to claim 1 has a driving base and a rock drilling machine, and connects the upper end side of the inner rod inserted inside the pipe anchor with the power transmission shaft of the rock drilling machine And the lower end side of the inner rod is connected to an inner bit provided with a tip blade for excavating the ground, and the rotational force and the striking force or both of them are transmitted from the inner rod to the inner bit. A pipe anchor burying apparatus for installing a pipe anchor in a state where the inner rod is inserted into the pipe anchor, wherein the pipe anchor is suspended between a power transmission unit of the rock drilling machine and the pipe anchor. A positioning jig for lowering is interposed, and the positioning jig is fixed to the power transmission unit, whereby the inner bit and the pipe anchor are at predetermined positions. As well as equity,
The positioning jig has a lifting jig through which the inner rod is inserted and is fixed to the power transmission unit of the rock drilling machine, and a through hole of the inner rod is formed in the vicinity of the center, and this lifting jig The hanging jig for the pipe anchor is installed in a suspended state, and the hanging jig is detachably attached to the hanging jig, and the pipe is prevented while rotating the pipe anchor. It is characterized by holding an anchor .

The invention according to claim 2 is characterized in that, in the above-mentioned 1st aspect, notches for earth and sand discharge are bored on the side surface of the pipe suspension jig in the positioning jig.

The invention according to claim 3 is characterized in that, in the item 1 or 2, a projection fitted to a hole or a recess formed on the side surface of the pipe anchor is formed inside the suspension jig, and the projection It is characterized by preventing rotation of a pipe anchor by fitting a part with a hole of a pipe anchor.

According to the present invention, in embedding work of a pipe anchor carried out with the installation of an avalanche prevention fence or the like, a ring bit which has been conventionally required is not left in the ground, and processing of the pipe anchor becomes unnecessary. For this reason, it is possible to reduce the cost of the bit used for the burying operation and to significantly reduce the time and effort required for the operation.

BRIEF DESCRIPTION OF THE DRAWINGS It is an elevation which shows the whole structure of the embedding | burying apparatus of the pipe anchor which concerns on one Embodiment of this invention. It is an elevation showing the principal part of the embedding device of the pipe anchor concerning one embodiment of the present invention. It is the figure which showed the detail of the inner bit in the embedding | flush-mounting apparatus of the pipe anchor which concerns on one Embodiment of this invention, FIG. 3 (a) is a schematic perspective view, FIG.3 (b) is the inner bit and pipe anchor at the time of embedding. FIG. 3 (c) is an explanatory view showing the relationship between the inner bit and the pipe anchor after the completion of the embedding operation. Similarly, it is a schematic perspective view which shows a relationship with the positioning jig (a suspending jig and a suspending jig) which is the principal part of the embedding | burying apparatus of the pipe anchor which concerns on one Embodiment of this invention. Similarly, FIG. 5 (a) is a plan view, and FIG. 5 (b) is an arrow view seen from the Vb direction of FIG. 5 (a). FIG. 5 (c) is a view as seen from the direction of arrow Vc in FIG. 5 (a). It is explanatory drawing which showed the use procedure of the embedding | burying apparatus of the pipe anchor which concerns on one Embodiment of this invention. It is an elevation view which shows the principal part of the embedding | burying apparatus of the pipe anchor which concerns on other embodiment of this invention. Similarly, it is the figure which showed the positioning jig which is the principal part of the embedding | burying apparatus of the pipe anchor which concerns on other embodiment of this invention, FIG. 8 (a) is a front view, FIG.8 (b) is a schematic perspective view. is there. It is a schematic diagram showing the work situation at the time of burial of a pipe anchor.

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the pipe anchor burying apparatus according to the present invention will be described in detail below with reference to the attached drawings.

FIG. 1 is an elevation view showing an entire configuration of an embodiment of a pipe anchor burying apparatus according to the present invention, and FIG. 2 is an elevation view of an essential part.

As shown in these figures, the pipe anchor embedding device 10 according to the present embodiment is configured to include an anchor embedded mounting base 12, a rock drilling machine 14, an inner bit 16, an inner rod 18, etc. Although not shown, other components such as a compressor for supplying compressed air, a receiver tank for compressed air, and an oil tank for collecting oil generated during operation are connected. The driving stand 12 is supported by the support 13 in a state of being erected on the ground.
A pair of guide rails 12A, 12A for guiding the vertical movement of the rock drilling machine 14 is disposed in the driving stand 12, and a winding wire (winch) of a support wire for moving the rock drilling machine 14 up and down is also provided. It is done.

As shown in FIG. 2, the upper end portion of the inner rod 18 is connected to the power transmission unit 14A of the rock drilling machine 14 so that striking force and rotational force are transmitted from the rock drilling machine 14 when the anchor is buried. It has become. The inner bit 16 is attached to the lower end portion of the inner rod 18, and the embedded hole of the pipe anchor 20 is excavated by the end blade 16A on the lower end side of the inner bit 16 and the four wing bits 16B on the side. ing.

FIG. 3 is a view showing details of the inner bit 16, and as shown in these figures, the tip end blade 16A is provided on the lower end side, and the side diameter is larger than the outer diameter of the pipe anchor 20. A wing bit 16B which can be expanded or reduced in diameter smaller than the inner diameter of the pipe anchor 20 is provided to be able to advance and retract.

That is, as shown in FIG. 3 (b), when the inner rod 16 advances in the digging direction, the wing bit 16B is formed by the action of the cam surface (not shown) formed on the inner surface of the rotary shaft inside the inner bit 16. Are ejected from the side, and the diameter of the buried hole excavated by the tip blade 16A is further expanded by these wing bits 16B, and a buried hole having a diameter larger than the outer diameter of the pipe anchor 20 to be buried is excavated.

Thus, the pipe anchor 20 can be embedded to a predetermined depth by using the mass of the rock drilling machine 14 and the weight of the pipe anchor 20 without applying a rotational force. In addition, since the buried hole expanded in diameter acts to gradually compress the pipe anchor by earth pressure after being buried, sufficient strength can be maintained. That is, in the embedding apparatus 10 of the present embodiment, since the rotational force is not applied to the pipe anchor 20, the processing associated therewith is not necessary.

When the inner rod 16 is moved in the removal direction after the pipe anchor 20 is buried, the wing bit 16B is accommodated on the side surface of the inner bit 16, and the inner bit 16 is further moved upward to inside the pipe anchor 20. It is possible to pull out through.

FIG. 4 is a schematic perspective view showing the relationship with the positioning jig (the hanging jig 30 and the hanging jig 32) which is the main part of the pipe anchor burying apparatus 10 according to the present invention, FIG. FIG.
As shown in these figures, a hanging jig 30 is attached to the power transmission unit 14A of the rock drilling machine 14, and the hanging jig 30 includes three ridges 30A, 30B, and 30C. A power transmission shaft 14B which is provided and has a central portion connected to the connecting shaft 34 for the inner rod 16 is inserted.

Of the three buttocks, the uppermost hook 30A is attached to the lower part of the main body of the rock drilling machine 14 by bolts and nuts, and the upper end face of the hanging jig 32 to the lower surface of the middle hook 30B. Buttocks 30B are partially cut out.

Further, as shown in FIGS. 4B and 5C, when the hanging jig 32 is attached to the lowest portion 30C of the lowermost portion, as shown in FIGS. The hanging jig 32 is held at a constant height while the rotating state of the hanging jig 32 is prevented while the hanging jig 32 is engaged with the recessed portions 32A and 32A ′ provided on the peripheral wall surface. It has become.

The hanging jig 32 is formed in a cylindrical shape at the time of assembly, and an openable / closable door 32B is attached to a part thereof by a hinge, and the door 32B is fixed in a cylindrical state by a locking means 32C. Is possible.

Furthermore, two protrusions 32D and 32D 'are formed on the inside of the suspension jig 32, and provided so as to fit in a pair of holes 20A and 20A' formed on the side surface of the upper end of the pipe anchor. It is done. That is, by fitting these projections 32D and 32D 'to the two holes 20A and 20A' of the pipe anchor 20, the rotation of the pipe anchor is prevented and the upper end side of the pipe anchor 20 is suspended. It is designed to be held at a fixed position in the lowered state.

The shape of the two holes 20A and 20A 'provided in the pipe anchor 20 is determined in consideration of the easiness and quickness of construction on the site, such as long holes and oval holes. However, in the present embodiment, it is a normal circular hole.
In addition, notch holes 32E and 32E 'are bored in the cylindrical side surface of the suspension jig 32, and the inside of the anchor pipe 20 is upwardly moved from the notch holes 32E and 32E' at the time of the embedding operation. It is designed to discharge guided earth and sand.

Then, the procedure at the time of using the embedding device 10 of the pipe anchor of this embodiment comprised as mentioned above is demonstrated. FIG. 6 is an explanatory view showing a use procedure of the embedding device 10.
First, as shown in FIG. 1, the drive stand 12 is erected and fixed by a support (such as a stay rope) 13 so that the rock drilling machine 14 can move up and down along the guide rails 12A shown in FIG. Install. Air is sent from the compressor to the rock drilling machine 14 so that the impact and rotational force act on the inner rod 18 as described later.

Then, as shown in FIG. 6A, the inner bit 16 is attached to the lower end of the inner rod 18 in advance, and the inner rod 18 is inserted through the hanging jig 30 shown in FIGS. The upper end side is connected to the power transmission shaft 14 B of the rock drilling machine 14. The connection here may be a screw connection by means of a male screw or a female screw which is cut in each case, or may be a method by means of a socket or the like which can be prevented from coming off.

Next, as shown in FIG. 6 (b), the pipe anchor 20 is inserted from the inner bit 16 side to the inner rod 18, and the upper part thereof is the hanging jig 32 shown in FIGS. 2 and 4 described above. Fix through. At that time, the pipe anchor 20 is prevented from rotating by the projections 32D of the suspension jig 32 being fitted into the two holes 20A and 20A 'of the pipe anchor 20. Also, at this time, since the hanging jig 32 is fixed to the power transmission unit 14A via the hanging jig 30, the pipe anchor 20 is always at a fixed height position with respect to the lower end inner bit 16 It is held.

And, in the state shown in FIG. 2, FIG. 3 (b) and FIG. 6 (c), the embedding work of the pipe anchor 20 is carried out at a predetermined place. The inner rod 18 is rotated in one direction while the wire is gradually loosened and moved downward using a winch (not shown). At this time, the four wing bits 16B protrude laterally from the accommodated state by rotation of the inner rod 18 in one direction, and the embedded hole having an inner diameter larger than the outer diameter of the pipe anchor 20 And drilling with both wing bits 16B. By this, the pipe anchor 20 moves downward using its own weight and the mass of the rock drilling machine 14.

  When the pipe anchor 20 reaches a predetermined depth, the inner rod 18 of the rock drilling machine 14 is rotated in the other direction, and the process proceeds to the removal operation of the inner rod 18. At this time, the wing bit 16B is accommodated on the side surface of the inner bit 16 by moving the inner rod 18 in the removal direction, and the outer diameter is smaller than the inner diameter of the pipe anchor 20. The rod 18 is moved upward through the inside of the pipe anchor 20 and recovered.

As described above, according to the pipe anchor burying apparatus of the present embodiment, the burying operation can be performed without rotating the pipe anchor 20, and the surface, the lower end, and the like of the pipe anchor 20 to be buried are damaged. Can be prevented.
As a result, the pipe anchor 20 after being buried does not need to be filled with an antirust mortar.

In addition, since the pipe anchor 20 is not hit by the rock drilling machine 14, it is not necessary to process the propulsive force receiving portion and the inner bit 16 side which were conventionally required on the lower end side of the pipe anchor. Become. For this reason, the processing on the pipe anchor 20 and the inner bit 16 can be minimized, and the work time and cost can be reduced.

In the above embodiment, the hanging jig 30 and the hanging jig 32 are used as the positioning jig, but the present invention is not limited to this, and the positioning jig 40 shown in FIGS. 7 and 8 is substituted. It is also possible. As shown in FIGS. 7 and 8, the positioning jig 40 is attached to the power transmission portion 14A of the rock drilling machine 14 or the ridge portion 30C of the suspension jig 30 via a bracket 40A.

The positioning jig 40 is formed in a U-shape in a front view, and heights are provided at both lower end portions 40A and 40B thereof by means of a horizontally extending shaft-like fixing means 42 together with the hole of the pipe anchor 20. The position is kept constant. By this, it is possible to always maintain a fixed positional relationship between the pipe anchor 20 and the inner bit 16.

Thus, with regard to the positioning jig, in addition to the above-described suspension jig 30 and suspension jig 32, the upper end side of the pipe anchor 20 is fixed, and the mass of the rock drilling machine 14 is utilized in the embedding operation. It may be any shape as long as it can be buried without rotating the pipe anchor 20.

  Furthermore, although the inner bit 16 used in the above embodiment was of the type that protrudes from the side of the bit, the present invention is not limited to this, and has a structure in which the tip blade is eccentric. It is also possible to use a drilling blade of the expanding type.

  As described above, according to the pipe anchor burying apparatus of the present invention, the pipe anchor installation work can be performed safely and efficiently.

INDUSTRIAL APPLICABILITY The present invention can be used in the fields of civil engineering work such as construction work for snowfall prevention fences, installation work for solar cell panel mounts, and anchor burial work on slopes.

DESCRIPTION OF SYMBOLS 10 pipe anchor embedment apparatus 12 driving mount 12A guide rail 13 support 14 rock drilling machine 16 inner bit 16A tip blade 16B wing bit 18 inner rod 20 pipe anchor 20A, 20A 'hole 30 lifting jig 30A 30B 30C hook 32 hanging Lowering jig 32A, 32A 'recess
32B door portion 32C lock means 32D, 32D 'projection portion 32E, 32E' notch hole 34 connecting shaft 40 positioning jig 40A bracket 40B both lower end portions 42 fixing means

Claims (3)

An upper end side of an inner rod inserted into a pipe anchor is connected to a power transmission shaft of the rock drilling machine, and a lower end side of the inner rod is a tip blade for ground excavation. A pipe in a state where the inner rod is inserted into the pipe anchor by connecting with an inner bit provided with the inner rod and transmitting a rotational force and / or an impact force from the inner rod to the inner bit. It is a pipe anchor burying apparatus for installing anchors,
A positioning jig for suspending the pipe anchor is interposed between the power transmission unit of the rock drilling machine and the pipe anchor, and the inner jig and the pipe anchor are fixed by fixing the positioning jig to the power transmission unit. And hold it in place ,
The positioning jig is
The inner rod is inserted and fixed to the power transmission portion of the rock drilling machine, and has a hanging jig in which a through hole of the inner rod is formed in the vicinity of the center. The suspension jig is installed in a suspended state, and the suspension jig is detachably attached to the suspension jig and holds the pipe anchor while preventing rotation of the pipe anchor. A pipe anchor burying device characterized by the above. 2. The pipe anchor burying device according to claim 1, wherein a notch for discharging soil is drilled on the side surface of the pipe suspension jig in the positioning jig. Inside the hanging jig, a projection is formed which fits into a hole or a recess formed on the side surface of the pipe anchor, and the projection engages with the hole of the pipe anchor to form a pipe anchor The pipe anchor burying apparatus according to claim 1 or 2, wherein rotation is prevented.

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