JPH05112912A - Lifting-type chiseling device and construction method using the same - Google Patents

Abstract

(57) [Abstract] [Purpose] Chiseling and roughening of concrete bridge piers and independent concrete pillars of buildings are performed mechanically without the need for manual labor by workers, and the labor, labor, and danger, fatigue, and badness of workers (EN) Provided are a lifting type chiseling device that improves a sanitary environment and a construction method using the same. [Structure] Upper frame 3 with vertically adjustable expansion and contraction
Each of the lower frame 5 and the lower frame 5 is provided with a press-contact plate 7 capable of controlling contact and separation on the side surface of the concrete column 1, so that the upper frame 3 and the lower frame 5 can be fixed to and detached from the concrete column 1, respectively.
A power type chipping machine 11 is provided on either or both of the upper frame 3 and the lower frame 5 so as to control the movement along the peripheral surface of the concrete column 1 to form a lifting type chipping device 2. 2 is assembled to the concrete column 1, and each press-contact plate 7 of the upper and lower frames 3 and 5 is alternately contacted with and separated from the concrete column 1, and the upper and lower frames 3 and 5 are alternately extended and contracted to control the lifting chiseling device 2. The vertical movement along the concrete pillar 1 is carried out, and the peripheral surface of the concrete pillar 1 is chipped by the power type chipping machine 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating type chipping device for mechanically chipping or roughening a concrete bridge pier surface or an independent concrete pillar surface of a building, and a construction method using the same.

[0002]

2. Description of the Related Art When widening a road bridge such as an expressway, the surface of an existing concrete bridge pier is often roughened and concrete is spliced to expand the bridge pier. Conventionally, a scaffold is built around the bridge pier, and workers climb the scaffold to perform roughening with a hand-held pick hammer. However, many piers are more than 20 m high, which is dangerous work at high places. Since a pick hammer is used to perform an upward or sideways work, fatigue is large, and dust is generated, resulting in a poor sanitary environment. In addition, when the number of piers is large, there is a problem that the amount of roughening work becomes large and it is necessary to secure a large number of workers at one time.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is intended to solve the problems such as chipping and roughening of a concrete bridge pier or an independent concrete pillar of a building. It is an object of the present invention to provide an elevating type chiseling device and a construction method using the same, which can be performed mechanically without manual labor, and which can save labor and improve danger, fatigue, and bad sanitary environment.

[0004]

In order to achieve the above object, the present invention provides an upper frame and a lower frame whose vertical intervals can be controlled to expand and contract with pressure contact plates which can be controlled to contact and separate from the side surface of a concrete column. The upper frame and the lower frame can be fixed and disassembled to the concrete columns respectively, and the upper frame,
A lifting chipping device, which is equipped with a power chipping machine on one or both of the lower frames so that the movement can be controlled along the peripheral surface of the concrete column, is assembled to the concrete column, and the pressure contact plates of the upper and lower frames are alternately made of concrete. In addition to controlling the contact with and separating from the column, the upper and lower frames are alternately expanded and contracted to raise and lower the lifting chisel device along the concrete column.
It features an up-and-down chiseling device that chiseles the peripheral surface of a concrete column with a power chiseling machine, and a construction method using the same.

[0005]

Operation: Assembling the lifting type chipping device of the present invention to a concrete column, starting a power type chipping machine equipped on either or both of an upper frame and a lower frame, and controlling movement along the peripheral surface of the concrete column. The roughening of the concrete surface in the circumferential direction of the concrete columns can be achieved. In addition, the pressure contact plates of the upper and lower frames are alternately controlled to contact and separate from the concrete columns, and the upper and lower frames are alternately extended and contracted so that the elevating type chiseling device can be raised or lowered along the concrete columns. Therefore, by combining the movement control in the column circumferential direction of the power type chiseling machine and the elevation control in the column axial direction, it is possible to mechanically and safely carry out the chiseling work on the entire surface of the concrete column without human labor. ..

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an embodiment shown in the drawings. 1 to 5, 1 is a concrete column such as a bridge pier, 2 is an elevating-type chipping device of the present invention, and the elevating-type chipping device 2 includes a connecting bar 4 vertically suspended at four corners of an upper frame 3 and a lower frame. 5 is assembled via a center hole type jack 6 for raising and lowering the upper and lower frames so as to be able to control the expansion and contraction of the vertical intervals, and the upper and lower frames 3, 5
In addition, a pair of pressure contact plates 7 that press the two side surfaces of the concrete column 1 respectively can be controlled to contact and separate from the surface of the concrete column 1 via a link-shaped link mechanism 9 operated by a hydraulic jack 8 for contacting and separating the pressure column. It is installed. The pressure contact surface of the pressure contact plate 7 is a rubber plate having a corrugated surface so as to strongly adhere to the surface of the concrete column 1. A deck 10 provided with a through hole for the concrete pillar 1 is attached to the upper frame 3, and a rail 13 for moving a dolly 12 equipped with a power type chipper 11 along the peripheral surface of the concrete pillar 1 is mounted on the deck 10. A turntable 14 is installed at the corner of the deck 10 to transfer the power type chipping machine 11 to a rail 13 in a right angle direction. Reference numeral 15 is a turntable turning hydraulic cylinder for turning the turntable 14 forward and backward by 90 °. As shown in FIG. 5, the turntable may be rotated by an arcuate rack gear 16 and a hydraulic motor 17 having a pinion gear meshing with the rack gear 16 mounted on its axis. The power-type chiseling machine 11 is mounted on the carriage 12 by a hydraulic or pneumatic cylinder 18 for advancing and retracting the chiseling machine so that the chisel can be moved forward and backward in the core direction of the concrete pillar 1.
2 is a pinion gear 2 axially attached to a moving motor 19
0 meshes with the rack gear 21 laid between the rails 13, and the movement on the rail 13 can be controlled along the peripheral surface of the concrete column 1. The power type chipping machine 11 may be installed not only in the upper frame 3 but also in the deck provided in the lower frame 3, and in both upper and lower frames 3 and 5 in order to improve the efficiency of chipping work. May be.

Next, regarding an embodiment of an elevating type chiseling device equipped with a power type chiseling machine in the upper frame, a construction method for performing roughening work on concrete columns such as bridge piers is shown in FIGS. 6 (A) and 6 (B). , (C). 1) First, the lifting type chipping device 2 is assembled and fixed to the concrete column 1. In this case, usually, the upper frame 3 and the lower frame 5 are assembled in a state in which the distance between them is minimized, and the upper and lower frames 3 and 5 are fixed to the concrete pillar 1 in the direction of shortening by pressing the hydraulic jacks 8 for contacting and separating the pressure contact plates. By controlling, the pair of press-contact plates 7 of the upper and lower frames 3 and 5 press the two sides of the concrete column 1 via the link-shaped link mechanism 9, respectively, and the upper and lower frames 3 and 5 are integrally attached to the concrete column 1. It is fixed (A). 2) In this state, the power-type chiseling machine 11 is operated, and the hydraulic or pneumatic cylinder 18 for advancing and retreating the chiseling machine is used to press the bit tip of the power-type chiseling machine 11 against the surface of the concrete column and drive the moving motor 19. The bogie 12 is moved along the surface of the concrete pillar 1 on the rail 13 by the meshing of the pinion gear 20 and the rack gear 21, and the surface of the concrete pillar 1 is roughened by the power type chipping machine 11. The dolly 12 is the turntable 1 at the corner of the deck 10.
When the rail 13 of FIG. It is transferred to the rail 13 in the direction, and this is repeated to perform band-shaped roughening on the four circumferences of the concrete column 1. 3) Once the above level of roughening has passed, the lower frame 5
, The hydraulic jack 8 for connecting and separating the pressure contact plate of the upper frame 3 is controlled in the expanding direction to disengage the pressure contact plate 7 from the surface of the concrete column 1, and the lower frame 5
Of the upper and lower frames is controlled to raise the upper frame 3 by an amount corresponding to the roughening width P of the power-type chiseling machine 11, and the hydraulic jack 8 for contacting / separating the pressure contact plate is controlled again in the shortening direction to control the pressure contact plate 7. Is pressed against the surface of the concrete pillar 1 to fix the upper frame 3 to the concrete pillar 1, and the power type chipping machine 11 is moved around the concrete pillar 1 to perform band-shaped roughening continuously to the previous roughening width. Thereafter, the same steps are repeated until the upper frame 3 is lifted by the maximum stroke of the connecting bar 4 (B). 4) When the roughening work has progressed to the point where the upper frame 3 has risen by the maximum stroke of the connecting bar 4, the upper frame 3
, The hydraulic jack 8 for connecting and separating the pressure contact plate of the lower frame 5 is controlled in the expanding direction to disengage the pressure contact plate 7 from the surface of the concrete column 1.
The lower frame 5 is fixed to the concrete column 1 by controlling the jack 6 for raising and lowering the upper and lower frames to raise the lower frame 5 to a position where the interval between the upper and lower frames 3 and 5 is minimized (C). Similarly, the above steps are repeated until the upper part of the concrete pillar 1. In the above-mentioned embodiment, the process is advanced from the lower part of the concrete column to the upper part, but the above method may be reversed to proceed the process from the upper part of the column to the lower part.

[0008]

As described above, according to the present invention, the upper frame and the lower frame whose vertical intervals can be controlled to extend and contract are provided with the pressure contact plates which can control the contact and separation on the side surfaces of the concrete columns, and the upper frame and the lower frame. Each of them is fixed to and detached from the concrete column, and a lifting chipping device is equipped with a power-type chiseling machine on the upper frame, the lower frame, or both so that the movement can be controlled along the peripheral surface of the concrete column. Assembled to the concrete column, the press contact plates of the upper and lower frames are alternately controlled to approach and separate from the concrete columns, and the upper and lower frames are alternately controlled to expand and contract to raise and lower the lifting type chiseling device by itself along the concrete columns. Since it automatically performs chipping and roughening of the column surface, it is a preparatory work for assembling scaffolding for lifting work and deploying heavy equipment. Is unnecessary, the danger to workers, fatigue, bad hygiene environment is improved, work efficiency is significantly improved compared to the case of human power, and labor saving, shortening the construction period, and reducing the construction cost are achieved. It is effective.

[0009]

[Brief description of drawings]

FIG. 1 is a front view of a state in which a lifting-type chiseling device of the present invention is assembled to a concrete column.

FIG. 2 is a side view of the same state.

FIG. 3 is a plan view of the above state.

FIG. 4 is a side view of a power type chipping machine of the above apparatus.

FIG. 5 is a plan view showing another embodiment of the turntable.

6 (A) to 6 (C) are views sequentially showing a construction method by the lifting type chipping device of the present invention.

[0010]

[Explanation of symbols]

1 Concrete Column 2 Elevating Chiseling Device 3 Upper Frame 4 Coupling Bar 5 Lower Frame 6 Center Hole Type Hydraulic Jack for Elevating and Lowering Frame 7 Pressure Contact Plate 8 Hydraulic Jack for Pressing and Contacting Pressure Plate 9 Link Mechanism 10 Deck 11 Powered Chipping Machine 12 trucks 13 rails 14 turntables

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Yukio Hashi 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Masayasu Oshima 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Within the corporation

Claims (2)

[Claims] 1. An upper frame and a lower frame whose vertical intervals can be controlled to expand and contract are provided with pressure contact plates capable of controlling contact and separation on the side surfaces of a concrete column, and the upper frame and the lower frame are fixed to and detachable from the concrete column, respectively. An elevating type chiseling device comprising a power chiseling machine capable of controlling movement along a peripheral surface of a concrete column on either or both of an upper frame and a lower frame. 2. An upper frame and a lower frame whose vertical intervals can be controlled to expand and contract are provided with pressure contact plates which can control contact and separation on the side surfaces of the concrete columns, and the upper frame and the lower frame can be fixed and detached from the concrete columns respectively. , An upper frame, a lower frame, or both, equipped with a power-type chiseling machine that can be controlled to move along the peripheral surface of the concrete column. Alternately, the upper and lower frames are alternately controlled to approach and separate, and the upper and lower frames are alternately controlled to expand and lower to raise and lower the elevating debris device by itself along the concrete column, and the power debris machine is used to chisel the concrete column peripheral surface. A construction method that uses a characteristic lifting chiseling device.