JP2022125602A - Boring machine improved in workability and safety by connection on the ground - Google Patents

Abstract

To provide a boring machine eliminating installation of a tri-pod or a tower on which the boring machine is placed for leveling the boring machine in order to secure verticality of a boring hole problematic in boring a hole with the boring machine in a normal geological survey using a percussion type boring machine or a rotary type boring machine.SOLUTION: A configuration of a boring machine includes: screwing a spiral insertion body (72) of a support jig (7) into a slop (G) on which a geological survey is performed to increase vertical reaction force; and fixing a rotation driving part guide (1) on the support jig (7) so as to allow the rotation driving part guide (1) to be leveled without installing a scaffold. The configuration thereby allows stability of the rotation driving part guide (1) by embedding gravel by the support jig (7) provided with the spiral insertion body (72) .SELECTED DRAWING: Figure 1

Description

In the present invention, the structure of the hand feed type boring machine used for ground investigation is used, and instead of the work of installing a trident or a tower on the scaffolding on which the boring machine is placed during a normal investigation, The object is to provide a boring machine that secures the stability of the boring machine and improves the workability and safety during investigation by increasing the vertical reaction force by screwing in a spiral support device.

Percussion-type boring machines and rotary-type boring machines are used in geological surveys that are usually conducted.

In order to ensure the verticality of the borehole, which is a problem when drilling with these boring machines, it is necessary to place the boring machine horizontally by installing a trident or a turret on the scaffolding on which the boring machine is placed.

When carrying out ground surveys with such a combination, the hydraulic feed type boring machine weighs more than 200 kg, requiring a great deal of labor to transport it to survey locations where cranes cannot reach.

In addition, scaffolding is necessary because it is necessary to set up a fork or a turret to ensure the verticality of the survey hole, and it is not possible to survey in narrow places where scaffolding cannot be installed. There is also a problem.

On the other hand, ground surveys on embankment slopes are often conducted with simple boring machines because the ground conditions at shallow depths are often understood.

Some of the simple boring machines used for such work have specifications that combine a percussion-type electric drive unit with a core tube for collecting core samples from the ground. It is a problem that the cores to be extracted will decrease due to significant compression when drilling is advanced.

In addition, if it becomes difficult to penetrate during excavation, workers must put their weight on the excavation work, which poses a safety problem.

Utility Model Registration No. 3101398 JP 2017-122375 A Utility Model Registration No. 3084405

The configuration of the invention of Patent Document 1 is a boring device for geological surveys in which an electric core drill is used to push down a boring rod equipped with a sampler into the ground to collect a core and perform a standard penetration test. A vertical elevating frame is detachably attached on the base provided, an electric core drill is attached downward to the elevating frame so that it can be lifted and detached, and a boring rod equipped with a sampler is attached to the rotating part of the electric core drill. A pressurizing lever is provided through the holder and detachably connected to lower the electric core drill to press down the boring rod into the ground. This is a boring device for geological surveys, in which a wire of an electric winch is suspended, and a connector for connecting with the upper end of a boring rod is attached to the tip of the wire.

On the other hand, in the present invention, the structure of the hand feed type boring machine used for ground investigation is used, and instead of the work of setting up a fork or a tower on the scaffolding on which the boring machine is placed during ordinary investigation, By screwing a spiral support device into the ground to be surveyed and increasing the vertical reaction force, the stability of the drilling machine is secured, and the workability and safety during surveying are improved. It is different from the invention of 1.

In the configuration of the invention of Patent Document 2, regarding the support of the boring machine, a hanger is attached to the central part in the longitudinal direction of the strut part, and the hanger has a leg part having the same configuration as the leg part etc. One end of the hanger is attached so as to be rotatable around the hanger. The other end of the leg is fixed to the survey ground by an anchor. In addition, in this embodiment, the pedestal is also fixed to the investigation ground with an anchor.

On the other hand, in the present invention, instead of holding the investigation ground by legs, hangers, pedestals and anchors as in Patent Document 2, a spiral support device is screwed into the ground to be investigated to increase the vertical reaction force. This is different from the invention of Patent Document 2 because it is a boring machine that secures the stability of the boring machine and improves workability and safety during investigation.

The configuration of the invention of the above Patent Document 3 includes a guide mechanism consisting of at least two shaft members extending on a traveling truck equipped with at least two wheels with a diameter of 150 mm or more so that it can be moved by human power, and a feeding mechanism. a slide mechanism that engages with the guide mechanism and moves freely forward and backward in the longitudinal direction of the guide mechanism; The traveling carriage is fixed to the ground to be excavated so that it can be raised and lowered so that an upper space can be obtained. This is a portable drill characterized by being configured to take geological data, etc., by applying rotational force. The fixing of the portable drill utilizes a drive-in fixing member.

On the other hand, in the present invention, the stability of the drilling machine is ensured by screwing a spiral supporting device into the ground to be surveyed to increase the vertical reaction force, and the workability and safety during surveying are improved. Since it is a boring machine, it differs from the specification of the above-mentioned patent document 3, in which the vertical reaction force during excavation is borne by the weight of the portable drill and the drive-in fixing member.

Therefore, the present invention increases the vertical reaction force during excavation by screwing a spiral support device into the sloped ground where the ground survey is to be conducted, and fixing a rotary drive guide (leader) to the support device. To provide a boring machine capable of enhancing workability and safety during ground investigation.

The first aspect of the present invention is a boring machine that improves workability and safety by being connected to the ground. By fixing the drive unit, it is possible to ensure the horizontality of the drive unit without installing scaffolding.

The second aspect of the present invention is a boring machine that improves workability and safety by being connected to the ground. By fixing the part, it is possible to secure the verticality of the borehole without installing a trident or a turret.

The third aspect of the present invention is a boring machine that improves workability and safety by being connected to the ground. By fixing the part, it is possible to increase the vertical reaction force and supply pressure according to the condition of the ground for excavation. In the conventional type, when penetration becomes difficult during excavation, workers do not need to put their weight on excavation work, which makes it possible to work safely.

The fourth aspect of the present invention is the boring machine according to the first to third aspects of the invention, in which workability and safety are enhanced by connecting with the ground. The length of the spiral thrusting body is 30 cm to 70 cm, the width is 10 cm to 15 cm, and the pitch can be varied from 10 cm to 20 cm according to the size of the gravel in the embankment. This makes it possible to stabilize the drive unit.

Since the present invention is configured as described above, it has the following effects. Utilizing the structure of a hand-feed type boring machine used for ground investigation, instead of setting up a fork or a tower on the scaffolding on which the boring machine is placed during a normal investigation, a spiral support is provided on the ground to be investigated. By increasing the vertical reaction force by screwing in the tool, it is possible to stabilize the boring machine and improve workability and safety during investigation.

1 is a schematic front view of a boring machine according to the present invention; FIG. FIG. 2 is an enlarged view of a portion where the spiral support device and the rotary drive section guide of FIG. 1 are connected; 3 is a cross-sectional view taken along line 3-3 of FIG. 2; FIG. 1. It is an enlarged view at the time of starting embedding a spiral stabbing body in the ground by attaching a pin spanner to the pin hole of the supporting and rotating body of FIG. FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 4; FIG. 5 is a vertical cross-sectional view of the support and rotating body installed in the ground by embedding the spiral stabbing body in the ground from the state of FIG. 4 ;

As for the spiral support device related to the present invention, strong iron is used as standard.

For boring machines related to the present invention, it is standard to use a drive with a 200V reduction gear.

Next, an embodiment of the present invention will be described. In FIG. 1, reference numeral 1 denotes a rotary drive guide, which has a structure in which a rotary drive is provided in the middle part of the column in the height direction and _a spiral support device is provided in the lower part 11 . Reference numeral 2 denotes a rotary drive section, which has a structure in which a core tube is installed at the bottom and can be raised and lowered by the rotary drive section. Reference numeral 3 denotes a lifting handle for the rotation driving section guide 1, which is provided so that the core tube can be moved up and down via the rotation driving section 2. FIG. A support arm 4 is attached to the rotary drive section guide 1 to support the core tube. 5 is a core tube, and the ground G can be excavated by the rotary drive unit 2 . Reference numeral 6 denotes a connecting member for fixing the rotary driving section guide 1 and the spiral support/rotating body with a bolt.

In FIGS. 2 and 3, 61 is _a member that connects the rotation drive guide and the spiral support/rotator. Reference numeral 62 denotes a connecting bolt for fixing the spiral supporting/ _rotating body, the rotary driving section guide, and the spiral supporting/rotating body. Reference numeral ₆₃ denotes _a bolt for fixing the main body 61 of the connecting member between the lower portion 11 of the rotary drive section guide ₁ and the spiral support/rotating body.

Reference numeral 7 denotes an iron supporting device for the spiral stabbing body and the supporting and rotating body. Reference numeral 71 denotes _a supporting and rotating body for the spiral piercing body, which is made of iron. The spiral piercing body ₇₂ has a length of 30-70 cm, a width of 10-15 cm, and a pitch of It can be varied between 10 cm and 20 cm according to the size of gravel in the embankment, and it is possible to stabilize the rotary drive section guide 1 by taking in the gravel.

In addition, the spiral stabbing body 72 of the supporting device ₇ is screwed into the sloped ground G on which the ground survey is performed to increase the vertical reaction force, and the rotary drive unit guide 1 is fixed to the supporting device 7. By doing so, the horizontality of the rotary drive section guide 1 is ensured without installing a scaffold.

Furthermore, the above-mentioned supporting device 7 has a three _- pronged structure by screwing a spiral stabbing body 72 into the sloped ground G on which the ground survey is to be conducted, and fixing the supporting and rotating body 71 to the rotary drive section guide ₁ . It is constructed so as to ensure the verticality of the borehole without installing a turret.

Then, the base portion 7n of the spiral stabbing body ₇₂ is inserted into a hole ₇₆ made in the _upper surface 7m of the supporting and rotating body 71 and connected and fixed by welding or caulking to be integrated with the supporting and rotating body ₇₁ . There is. 73 is the inside of the supporting and _rotating body ₇ for the spiral stabbing body 72, which is hollow. Reference numeral 74 denotes an installation bolt with a foot attached to the pedestal 75 of the spiral stabbing body 72 and the _rotating body ₇ and grounded _on the ground G.

8 is a pin hole for inserting and hooking a pin spanner 9 . Reference numeral 9 denotes a pin spanner for supporting the spiral stabbing body 72 and for rotating the rotating body supporting device ₇ . Reference numeral 10 designates a supporting/rotating body 71 for _a spiral stabbing body ₇₂ , and a connecting member 6 that fixes the rotary drive part guide ₁ and the supporting/rotating body 71 for the spiral stabbing body with bolts and rotates when the connecting member 6 is attached. It is an arcuate adjustment slot for an adjustable mounting bolt.

Next, an embodiment of the present invention will be described.

The procedure for survey boring is as follows.
( ₁ ) In FIG. 4, the spiral stabbing body 72 of the supporting and rotating body 71 separated from the rotary drive section guide ₁ is positioned on the ground G to be geologically surveyed (uninserted state).
(2) As shown in Figs. 4 and 5, a pin spanner 9 hooked in a pin hole 8 is used to rotate the spiral stabbing body ₇₂ and the supporting and rotating body ₇₁ , thereby rotating the spiral stabbing body ₇₂ . is screwed up to the ground G and embedded.
( ₃ ) Ground contact with the ground G by adjusting the correction bolt ₇₄ with a foot that corrects the gap between the spiral stabbing body 72 screwed into the _ground G and the pedestal 75 of the supporting and _rotating body 71. make familiar.
(4) A member 6 ₁ that connects the spiral stabbing body 7 ₂ screwed into the ground G, the supporting and rotating body 7 ₁ , the rotary drive section guide 1 and the spiral supporting and rotating body 7 ₁ is attached to the spiral supporting and rotating body 7 . _The bolts 62 for connecting the rotary drive unit guide ₁ and the spiral support/rotator 71 are passed through the arcuate long bolt holes ₁₀ and screwed in to fix them (see FIG. 3).
(5) The rotary drive section guide 1 and the spiral stabbing body supporting/rotating body _{7-1 are} connected via the connecting member _6-1 and the bolt 6-2.
(6) Fine adjustment of the orientation of the rotary drive section guide 1 is performed by sliding it within the length of the arcuate elongated hole 10 for the bolt when performing the above connection.
(7) In addition, when it is desired to change the direction of the rotation drive section 2 guide ₁ greatly, the rotation drive section guide and the spiral support and rotation body of the member 61 that connects the rotation drive section guide and the spiral support and rotation body can be changed. The orientation can be changed by adjusting the four bolt holes of the bolts 63 for attaching the connecting member ₆ fixed with bolts.
(8) While the core tube 5 is being rotated by the rotary drive unit 2, cores are collected by hand feeding.

[Effect confirmation test 1]
In 2020, in Niigata Prefecture, the width of the spiral stabbing body ₇₂ of the supporting device was manufactured by varying the width, and a pitch of 10 cm to 20 cm with a good manufacturing yield was selected.

[Effect confirmation test 2]
In 2020, on an embankment slope in Shizuoka Prefecture, an iron spiral piercing body 7 ₂ with a length of 50 cm, a width of 10 cm, and a pitch of 10 cm to 20 cm was screwed into the ground G, which is the subject of a ground survey, in the support device 7. I confirmed the inclusion of gravel inside.

[Effect confirmation test 3]
In 2020, on the embankment inclined ground G in Shizuoka Prefecture, after screwing the spiral inserting body ₇₂ into the ground that is the target of the ground survey, the rotary drive unit guide 1, rotary drive unit 2, core tube 5, and connection Trial drilling was carried out using a hand-feed boring machine equipped with a member 6, a spiral piercing body, and a supporting device 7 that is a supporting and rotating body.

The present invention increases the vertical reaction force by screwing the spiral piercing body of the supporting device into the sloped ground where the ground survey is performed, and by connecting and fixing the rotary drive guide to the supporting device. It made it possible to improve workability and safety.

1... Rotation drive part guide (leader part)
REFERENCE SIGNS LIST 1 ₁ ... Lower portion of rotary drive section guide for supporting and connecting with supporting device of rotating body 2... Rotary drive section 3... Handle for lifting and lowering drive section 4... Core tube support arm 5... Core tube 6... Connection member 6 ₁ Main body of connecting member 6 ₂ Connecting bolt 6 ₃ Connecting bolt 7 Spiral stabbing body and supporting/rotating body supporting device 7 ₁ Supporting and rotating body of spiral stabbing body 7 ₂ Spiral shape Stabbing body 7 ₃ ... Inside of rotating body 7 ₄ ... Grounding bolt for correcting gap with ground 7 ₅ ... Base plate integrated with support and rotating body 7 ₆ ... Through hole at base of stabbing body 7n ... Stabbing body 8... Insertion pin hole of pin spanner 9... Pin spanner for supporting spiral stabbing body and rotating body 10... Arc-shaped elongated hole for adjustment of mounting bolt G... Ground

Claims (4)

The spiral piercing body (7 ₂ ) of the supporting device (7) is screwed into the sloped ground (G) where the ground investigation is to be conducted to increase the vertical reaction force, and the rotating drive unit guide ( A boring machine characterized in that by fixing 1), the horizontality of the rotary drive section guide (1) can be ensured without installing a scaffold. By screwing the spiral piercing body (7 ₂ ) of the supporting device (7) into the sloped ground (G) where the ground investigation is to be conducted, and fixing the rotary drive guide (1) to the supporting device (7) A boring machine characterized in that it is constructed so as to ensure the verticality of a borehole without installing a trident or a turret. By screwing the spiral piercing body (7 ₂ ) of the supporting device (7) into the sloped ground (G) where the ground investigation is to be conducted, and fixing the rotary drive part (2) to the supporting device (7), By increasing the vertical reaction force and applying pressure according to the condition of the ground (G), excavation becomes possible. Boring machine that has become possible to work on. The material of the spiral piercing body (7 ₂ ) of the supporting device (7) is made of iron, the length of the spiral piercing body (7 ₂ ) of the supporting device (7) is 30 cm to 70 cm, and the width is 10 cm to 10 cm. 15 cm, the pitch can be varied from 10 cm to 20 cm according to the size of the gravel in the embankment, and the claim that it is possible to stabilize the rotary drive part guide (1) by taking in the gravel A boring machine according to any one of 1 to 3.

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