JP2021126885A - Punching device - Google Patents

Abstract

To provide a punching device capable of punching a structure made of concrete while reducing the load of an operator.SOLUTION: A punching device A comprises a hammer drill 1 provided so as to move forward and backward and punching a structure made of concrete, a lifter 10 elevatably supporting the hammer drill 1, a support frame 20 provided at the lower part of the lifter 10 and supporting the lifter 10, a running frame 30 provided so as to straddle the support frame 20 and fitted with running rollers 31 and air jacks 40 having upper ends fixed to the running frames 30, provided with lower edges so as to be fixed to the support frame 20 and respectively selectively grounding the rollers 31 upon shrinkage and the support frame 20 upon expansion.SELECTED DRAWING: Figure 1

Description

The present invention relates to a drilling device for drilling a concrete structure.

For existing structures such as roads, bridges, dams, and embankments composed of concrete skeletons, reinforcement is laid on the sides and upper and lower surfaces of the skeleton for the purpose of maintaining and reinforcing the bearing capacity, and concrete is further struck. The construction method to be installed, that is, the additional striking method is carried out.

In the additional striking method, post-installed anchors are embedded in the structure at predetermined intervals, and reinforcing bars are arranged in the area where additional striking is performed so as to be connected to the post-installed anchors. After that, the formwork is attached and concrete is poured.

For example, Patent Document 1 (Japanese Unexamined Patent Publication No. 2018-131848) is known as a technique for reinforcing an existing structure by recasting concrete.

Here, in the additional driving method, a drilling device for drilling an existing structure is used to embed post-installed anchors. As a specific drilling device, a hammer drill that punches by hitting while rotating, a vibration drill that rotates and drills while rotating finely, and the like are known.

Then, in the drilling work, the worker at the site firmly holds the handle and the side handle of the drilling device, which are heavy objects, with both hands, and then digs by touching the tip of the bit to the drilling position.

Japanese Unexamined Patent Publication No. 2018-131848

Now, in the re-strike method, a large number of holes must be drilled in the structure in order to embed a large number of post-installed anchors. Then, the work using the conventional drilling device described above becomes heavy labor, and as a result, the work efficiency deteriorates.

The present invention has been made from the above-mentioned technical background, and an object of the present invention is to provide a drilling device capable of drilling a concrete structure while reducing the burden on an operator.

In order to solve the above problems, the drilling device of the present invention according to claim 1 is provided so as to be movable back and forth, a drilling means for drilling a concrete structure, and an elevating means for supporting the drilling means so as to be able to move up and down. A support frame provided below the elevating means and supporting the elevating means, a traveling frame provided so as to straddle the supporting frame, and a traveling frame to which a traveling roller is attached, and an upper end thereof on the traveling frame. It is characterized by having a telescopic jack which is fixed and has a lower end fixed to the support frame, contracts to extend the roller, and extends to selectively touch the support frame to the ground.

The drilling device of the present invention according to claim 2 is the invention according to claim 1, wherein the lifting means includes a table driven by a driving means to lift and lower, and the punching means is a straight line on the table. It is characterized in that it moves forward and backward by a linear motion member installed so as to be able to reciprocate.

The drilling device of the present invention according to claim 3 is the invention according to claim 2, wherein the linear motion member includes a guide rail, a slider on which the drilling means is mounted and slides on the guide rail, and the above. It is characterized in that it is provided with a thrust applying member that applies propulsive force to the slider.

The drilling device of the present invention according to claim 4 is characterized in that, in the invention according to claim 3, the thrust applying member is a motor and a ball screw or a cylinder device rotationally driven by the motor. And.

The drilling device of the present invention according to claim 5 is attached so that the roller can travel in a direction orthogonal to the moving direction of the drilling means in the invention according to any one of claims 1 to 4. It is characterized by being.

The drilling device of the present invention according to claim 6 is characterized in that, in the invention according to any one of claims 1 to 5, the support frame has a rectangular frame shape in a plan view. do.

According to the present invention, the structure can be punched by the punching means only by moving the drilling device with a roller, fixing the punching device at a desired position, and adjusting the height by the lifting means, thus reducing the burden on the operator. It is possible to drill the structure while doing so.

Further, since the drilling device can be moved or fixed by expanding and contracting the telescopic jack, it is not necessary to separately provide an outrigger, which simplifies the device configuration and suppresses cost increase.

It is a side view of the drilling apparatus which concerns on one Embodiment of this invention. It is a rear view of FIG. It is a top view of FIG. The state in which the air jack is contracted in the drilling device according to the embodiment of the present invention is shown, (a) is a side view, and (b) is a rear view. The drilling device according to the embodiment of the present invention shows a state in which the air jack is extended, (a) is a side view, and (b) is a rear view.

Hereinafter, embodiments as an example of the present invention will be described in detail with reference to the drawings. In addition, in the drawing for demonstrating the embodiment, the same constituent elements are in principle given the same reference numerals, and the repeated description thereof will be omitted.

In the drilling device A of the present embodiment shown in FIGS. 1 to 3, for example, reinforced concrete is additionally hammered to the existing structure (road, bridge, dam, embankment, etc.) S composed of a concrete skeleton. , Used to drill anchor holes (holes for embedding post-installed anchors) in the additional striking method for maintaining and reinforcing proof stress.

As shown in these drawings, the drilling device A of the present embodiment includes a lifter (elevating means) 10 that supports the hammer drill (drilling means) 1 for drilling the structure S so as to be able to move up and down. The lifter 10 is driven by a lifter frame 11, a columnar main body 12 mounted on the lifter frame 11 and elongated in the vertical direction, and a motor (driving means) 13 to move up and down along the side surface of the main body 12. A table 14 is provided, and the hammer drill 1 described above is installed on the table 14.

Two slide guides 15 are provided in the main body 12 which are arranged in the vertical direction and penetrate the table 14 to guide the raising and lowering of the table 14. Further, a ball screw 16 which is also arranged in the vertical direction and is rotated by the motor 13 and screwed with the table 14 is provided. Therefore, when the ball screw 16 is rotated by the drive of the motor 13 installed on the lifter frame 11, the table 14 is guided by the slide guide 15 to move up or down, and when the motor 13 stops, it stops at the height position at that time. do.

The hammer drill 1 installed on the table 14 of the lifter 10 is attached to a linear motion member 2 installed on the table 14 so as to be linearly reciprocating, and the linear motion member 2 enables forward / backward movement. There is.

Here, as shown in FIG. 3, the linear motion member 2 includes two guide rails 2a arranged in parallel with each other and a plate-shaped slider 2b on which the hammer drill 1 is mounted and slides to move the guide rails 2a. The slider 2b is provided with a ball screw 2c and a motor 2d as a thrust applying member for applying a propulsive force (propulsive force for reciprocating movement). The ball screw 2c is screwed into the slider 2b, and the motor 2d rotationally drives the ball screw 2c. Then, the rotary motion of the ball screw 2c is converted into a linear motion by the slider 2b and slides along the guide rail 2a, whereby the hammer drill 1 on the slider 2b moves back and forth.

Then, when the motor 2d is rotated to move the slider 2b in the direction approaching the concrete structure S to be drilled to move the hammer drill 1 forward, the tip of the bit 1a of the hammer drill 1 is moved forward. It is pressed against the drilling position and drilling is performed. Further, when the drilling is completed, the motor 2d is inverted and the slider 2b is moved in the direction away from the structure S to move the hammer drill 1 backward, the bit 1a of the hammer drill 1 is pulled out from the hole and returns to the standby position. .. In the present embodiment, the drilling depth by the hammer drill 1 is about 20 cm.

By the way, in the lower part of the lifter 10 having such a configuration, a support frame 20 for supporting the lifter 10 is provided. The support frame 20 has a rectangular frame shape in a plan view, and the lifter frame 11 is bolted to two rods 21 which are hung in parallel with each other on the inside. Further, an intermediate rod 22 is fixed to the long side portion of the rectangular support frame 20 by welding over the entire length thereof.

The traveling frame 30 is provided so as to straddle the support frame 20. The traveling frame 30 includes two long rods 30a arranged directly above the intermediate rod 22 (that is, directly above the long side portion of the support frame 20), and the long rods 30a at both ends of the long rod 30a. It is composed of two orthogonal short rods 30b. The short rod 30b is fixed to the back surface of the long rod 30a, and both ends of the short rod 30b project to the outside of the two long rods 30a arranged side by side. Rollers 31 for traveling are attached to a total of four locations at both ends of each short rod 30b.

As shown in the figure, in the present embodiment, the roller 31 is attached so as to be able to travel in a direction orthogonal to the moving direction of the hammer drill 1. Therefore, when the hammer drill 1 is directed toward the structure S to be drilled, the drilling device A can be moved substantially parallel to the wall surface of the structure S by the roller 31.

Air jacks (expandable jacks) 40 are provided at four locations between the support frame 20 and the traveling frame 30. The upper end of the air jack 40 is fixed to the traveling frame 30, and the lower end is fixed to the support frame 20. Therefore, the distance between the support frame 20 and the traveling frame 30 is changed by the operation of the air jack 40. Specifically, when the air jack 40 contracts, as shown in FIG. 4, the distance between the support frame 20 and the traveling frame 30 is narrowed, and the roller 31 provided on the traveling frame 30 comes into contact with the ground. On the contrary, when the air jack 40 is extended, as shown in FIG. 5, the distance between the support frame 20 and the traveling frame 30 is widened, and the support frame 20 comes into contact with the ground.

In the present embodiment, as an example of the telescopic jack, an air jack that expands and contracts with air pressure is used, but a hydraulic jack that expands and contracts with hydraulic pressure may be used.

When a hole (for example, an anchor hole for embedding a post-installed anchor) is made in the concrete structure S by using the drilling device A having the above configuration, the air jack 40 is contracted so that the roller 31 is in contact with the ground. (See FIG. 4), the drilling device A is moved to a predetermined position with respect to the structure S. Then, the air jack 40 is extended to ground the support frame 20, and the drilling device A is fixed at that position (see FIG. 5).

Next, the height is adjusted with the lifter 10 so that the hammer drill 1 is at the target drilling position. Specifically, the height of the hammer drill 1 is adjusted by raising and lowering the table 14 by the motor 13.

Then, the power of the hammer drill 1 is turned on, the hammer drill 1 is moved forward, and the tip of the bit 1a is pressed against the drilling position of the structure S to drill. That is, the slider 2b is moved by the motor 2d, which is a linear motion member 2, and the tip of the bit 1a of the hammer drill 1 is pressed against the drilling position to perform drilling.

When the drilling is completed, the slider 2b is moved in the direction away from the structure S to move the hammer drill 1 backward, and the hammer drill 1 is returned to the standby position. Then, when the next drilling position is in the vertical direction, drilling is performed while raising and lowering the hammer drill 1 with the lifter 10. If the next drilling position is in the lateral direction, the air jack 40 is contracted, the roller 31 is grounded, and the drilling device A is moved laterally along the structure S to adjust to the target position. For example, the air jack 40 is extended to ground the support frame 20, and the drilling device A is fixed to perform drilling.

As described above, according to the drilling device A of the present embodiment, the concrete structure S is simply moved by the roller 31 to be fixed at a desired position and the height is adjusted by the lifter 10. Since the hammer drill 1 can be used for drilling, the structure S can be drilled while reducing the burden on the operator.

Further, since the drilling device A can be moved or fixed by expanding and contracting the air jack 40, it is not necessary to separately provide an expensive outrigger, which simplifies the device configuration and suppresses cost increase. Can be done.

Although the invention made by the present inventor has been specifically described above based on the embodiments, the embodiments disclosed in the present specification are exemplary in all respects and are limited to the disclosed technology. is not it. That is, the technical scope of the present invention is not limitedly interpreted based on the description in the above-described embodiment, but should be interpreted according to the description of the claims, and the scope of claims. All changes are included as long as they do not deviate from the description technology and the technology equivalent to the above and the gist of the claims.

For example, in the present embodiment, the hammer drill 1 is used as the drilling means, but the present invention is not limited to this. That is, various drilling means capable of drilling a concrete structure S, such as a vibrating drill, can be applied.

Further, in the present embodiment, the ball screw 2c and the motor 2d are used as the thrust applying members for applying the propulsive force to the slider 2b. For example, a cylinder device is used to propel the slider 2b by expanding and contracting the piston rod. You may try to give power.

Further, the roller 31 may be mounted so as to be travelable in a direction along the moving direction of the hammer drill 1 instead of a direction orthogonal to the moving direction of the hammer drill 1 as in the present embodiment. Further, the roller 31 used in the present embodiment is a fixed roller having a fixed traveling direction, but a universal roller whose traveling direction can be turned may be used.

Further, the roller 31 and the lifter 10 (members that support the hammer drill 1 so as to be able to move up and down) may be electrically operated so that the drilling device A can be installed at a target position by remote control.

Further, although the support frame 20 of the present embodiment has a rectangular frame shape in a plan view, it is not limited to the shape of the present embodiment as long as it can be grounded and the drilling device A can be fixed. No.

In the above description, the case where the drilling device of the present invention is used for drilling an anchor hole in an additional driving method for an existing structure made of concrete is shown, but the present invention is not limited to this. It can be widely applied to drilling holes in concrete structures.

1 Hammadrill (drilling means)
1a Bit 2 Linear member 2a Guide rail 2b Slider 2c Ball screw 2d Motor 10 Lifter (elevating means)
11 Lifter frame 12 Main body 13 Motor (driving means)
14 Table 15 Slide guide 20 Support frame 21 Rod 22 Intermediate rod 30 Running frame 30a Long rod 30b Short rod 31 Roller 40 Air jack (expandable jack)
A drilling device S structure

Claims (6)

A perforation means that is provided so that it can move forward and backward and perforates a concrete structure,
An elevating means that supports the drilling means so as to be able to elevate, and an elevating means.
A support frame provided below the elevating means and supporting the elevating means, and
A traveling frame provided so as to straddle the support frame and to which a traveling roller is attached, and a traveling frame.
An telescopic jack whose upper end is fixed to the traveling frame and whose lower end is fixed to the support frame and contracts to extend the roller to selectively ground the support frame.
A drilling device characterized by having. The elevating means includes a table driven by the driving means to elevate and elevate.
The drilling means moves forward and backward by a linear motion member installed on the table so as to be linearly reciprocating.
The drilling device according to claim 1. The linear motion member includes a guide rail, a slider on which the drilling means is mounted and slides on the guide rail, and a thrust applying member that applies a propulsive force to the slider.
2. The drilling device according to claim 2. The thrust applying member is a motor, a ball screw rotationally driven by the motor, or a cylinder device.
3. The drilling device according to claim 3. The roller is attached so as to be able to travel in a direction orthogonal to the moving direction of the drilling means.
The drilling device according to any one of claims 1 to 4, wherein the drilling device is characterized. The support frame has a rectangular frame shape in a plan view.
The drilling device according to any one of claims 1 to 5, wherein the drilling device is characterized.

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