JP2000024534A - Concrete column crushing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform crushing manually and safely in a work site by forming an guide route which can slide vertically with the right and left end parts of a horizontal member in which a crushing blade is installed on the lower surface inserted and installing an upper frame material attachably/detachably in the upper part of a longitudinal frame material in which the horizontal member is formed insertably/extractably from the upper part. SOLUTION: When a concrete column 9 such as a utility-line pole is crushed, a lower frame material 13 is inserted into the lower side of the column 9, and longitudinal frame materials 12 and 12 are fixed to the lower frame material 13. Next, a horizontal member 3 is inserted between the longitudinal frame materials 12 and 12, and an upper frame material 11 is fitted to the longitudinal materials 12 and 12. Next, a hydraulic jack 5 is mounted on the patch of the horizontal member 3. The lever of the jack 5 is pushed down in this state, the concrete column 9 is pushed by a crushing blade 4 by pushing down the horizontal member 3, cracks are generated in the column 9 by the transverse blade of the crushing blade 4, the concrete part is crushed int small pieces which are stripped off from the longitudinal reinforcing bars to complete the crushing. After that, the longitudinal reinforcing bars are cut by a reinforcing bar clipper to fracture the concrete column 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a concrete column crusher, and more particularly to a crusher for manually crushing concrete columns.

[0002]

2. Description of the Related Art Concrete poles, such as telephone poles and telephone poles,
When the erecting object is removed and transported to a disposal site, the length of the erecting object is as long as several tens of meters, so it has been necessary to crush and cut it so that it can be loaded on a truck or the like. Specifically, the upright concrete pillar is inverted,
At the site, two or three places are crushed and cut so that each is about several meters long, and the shortened ones are loaded on a truck or the like and transported for disposal. Conventionally, in such a crushing and cutting operation of a concrete column, a large hammer or a diamond cutter has been used, or a construction machine such as a power shovel has been used.

[0003]

However, in the crushing and cutting using a large hammer or a diamond cutter, there is a danger that, at the time of work, crushed concrete small pieces scatter around and handling equipment rotating at high speed. . Furthermore, when a diamond cutter is used, it is necessary to secure a drive power supply. In addition, when using a construction machine, it is necessary to secure a place where the construction machine can be parked at the time of work, and further, a heavy burden is imposed on preparatory work such as moving the construction machine.

Accordingly, the present invention has been developed to solve the above-mentioned drawbacks of the prior art, when crushing a concrete column,
An object of the present invention is to provide a concrete column crusher that can be safely crushed manually at a work site without requiring a special installation place, and that can be easily transported. Another object of the present invention is to provide a concrete column crushing machine having a crushing blade capable of crushing with relatively small stress when crushing a concrete column.

[0005]

According to the present invention, there is provided a concrete column crusher comprising: a horizontal member having a crushing blade provided on a lower surface thereof; A vertical path member formed so as to be slidable up and down with the left and right ends inserted, and a vertical frame member formed so that the horizontal member can be inserted and removed from above, and a detachably provided upper part of the vertical frame member. And a concrete column crushing machine characterized by having an upper frame material obtained.

(2) The concrete column crushing machine according to (1), wherein the crushing blade is formed by hanging a plurality of plate-like bodies from the horizontal member. It was done. (3) In the concrete column crusher according to (2), the crushing blade is formed by intersecting the plurality of plate-like bodies with each other.

(4) Further, in the concrete column crusher according to (2) or (3), the crushing blade is formed by inclining lower end portions of the plurality of plate-like bodies, and the inclination angle of the lower end portions At a plurality of different angles. In addition,
In the concrete column crusher (1), it is preferable that a lower frame member is detachably provided below the vertical frame member.
Further, a crushing blade may be provided on the upper surface of the lower frame member.

The lower frame member may use a sleeper for placing an inverted concrete pillar, and the vertical frame member may be detachable from the sleeper. Also,
In the concrete column crusher according to (4), it is preferable that the crushing blade has two types of inclination angles of the lower end with respect to the horizontal direction: 5 to 20 degrees and 50 to 70 degrees. .

[0009]

According to the above construction, the horizontal member can be inserted and removed.
Further, since the upper frame member is detachable, the concrete column crushing operation can be manually and safely crushed at the removal work site, and the concrete column crusher itself can be easily transported. In addition, since the crushing blade is formed by inclining the lower end portions of the plurality of plate-like bodies and making the lower end portions have a plurality of different inclination angles, a great effort is required by the worker when crushing the concrete column. It becomes possible to crush without applying.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete embodiment of a concrete column crusher according to the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1 (1), this concrete column crusher 1 is provided with a frame composed of an upper frame member 11, two vertical frame members 12, and a lower frame member 13, and a horizontal member is provided in the frame member. 3, a crushing blade 4 and a hydraulic jack 5 as means for obtaining a pressing force for crushing the concrete column 9 are provided.

The upper frame member 11, the two vertical frames 12, and the lower frame 13 of the frame are each made of H-shaped steel. Also,
Bolts 61 and nuts 62 are used as means for fixing these frame members, so that assembly or disassembly of each frame member can be easily performed. The upper frame member 11 is provided with a seat plate 18 at both left and right end portions so as to cover end surfaces thereof.
8 is provided with two holes for penetrating the bolts in order to be fixed to the vertical frame member 12 by bolts 61 and nuts (not shown). In addition, in order to increase the strength against the pressing force applied from the hydraulic jack 5 during the crushing operation, the abutment plate 19 is interposed at a position where the receiving member 52 of the hydraulic jack 5 contacts. When the ram 51 extends to the upper limit of the design stroke by operating the lever 54, the hydraulic jack 5 is temporarily removed, a spacer (not shown) is inserted between the ram 51 and the horizontal member 3, and the lever 54 is operated again. When the hydraulic jack 5 is removed, the pressing plate 22 is pressed down by the push bolt 22 and then the hydraulic jack 5 is removed.
Remove.

As shown in FIG. 2A, the vertical frame member 12
The webs 14 of the left and right vertical frame members 12 are provided so as to face each other. Further, a seat plate 1 for fixing the upper frame member 11 with bolts 61 and nuts 62 is provided on each of the vertical frame members 12 near the upper end on the side where the upper frame member 11 is fixed.
The seat plate 16 is also provided with two holes through which bolts 61 pass, and the nut 62 is welded and fixed. Furthermore, the vertical frame material 1 is also provided at the lower end.
A seat plate 16 is provided so as to cover the end face portion of FIG.
As shown in (2), the seat plate 16 is also provided with two holes through which bolts for fixing the lower frame member by bolts 61 and nuts 62 are provided, and the lower frame member 13 has a nut. 62 is fixed by welding.

The lower frame member 13 has two holes on the left and right sides on the upper surface of the upper flange 21 near the left and right ends, through which bolts for fixing the seat plate 16 of the vertical frame member with the bolts 61 and the nuts 62 pass. And the nut 62 is fixed by welding. Furthermore, the upper flange 2
Two pillow plates 17 are provided so as to stand on the upper flange 21 so that the concrete pillar 9 abutting on 1 does not rotate and move.

The horizontal member 3 is, as shown in FIG.
The left and right ends of the channel steel 31 of the horizontal member 3 are provided in a state of being inserted into a substantially U-shaped portion formed by the web 14 and the flange 15 of the vertical frame member 12. This channel steel 31
Since the vertical frame 12 is provided with a gap between the vertical frame 12 and the U-shaped portion, the vertical frame 12 can be slid up and down as a guide rail. In addition, this channel steel 31
Is provided with a closing plate 33 so as to cover the end face portion thereof.
There is provided a backing plate 32 for preventing lateral displacement.

In addition, as described above, since there is a gap between the channel steel 31 and the vertical frame member, if the horizontal member 3 is inclined at a certain angle or more, the horizontal member 3 is formed by the web 14 and the flange 15 of the vertical frame member 12. Since both ends of the channel steel 31 are exposed from the substantially U-shaped portion to be formed, the channel steel 31 can be easily removed from the vertical frame member. Further, as shown in FIGS. 1 (3) and 2 (2), four crushing blades 4 are provided continuously in a substantially U-shaped portion formed by the web 34 and the flange 35 of the channel steel 31. Have been. As shown in FIGS. 2 (3) and (4), the crushing blade 4 includes a plate-shaped vertical blade 41 and a horizontal blade
It is provided so as to intersect at an angle of 0 degrees, and the vertical blade 41
Is provided in a direction parallel to the concrete column 9, and the horizontal blade 42 is provided in a direction perpendicular to the concrete column 9.

The lower ends of the vertical blades 41 and the horizontal blades 42 are formed so that the vertical blades 41 have an inclination angle of 50 to 70 degrees, preferably 60 degrees with respect to the horizontal direction.
Is formed to have an inclination angle of 5 to 20 degrees, preferably 10 degrees. This is because when the concrete column 9 is crushed by the work procedure described below, the horizontal blade 42 generates a groove-like crack in the circumferential direction of the concrete column 9, and the vertical blade 41 generates a crack at the portion where the horizontal blade 42 generates the crack. However, when the lower ends of these blades are set within the above-described range of the inclination angle, the pressing force required for crushing can be reduced as compared with other shapes. It is.

Further, between the upper frame member 11 and the horizontal member 3,
A hydraulic jack 5 is provided interposed. This hydraulic jack is composed of a concrete column 9 and a horizontal member 3 and a lower frame member 13.
In this state, the lower surface of the concrete column 9 is brought into contact with the backing plate 32 so that the portion to be crushed can be pressed, and the receiving member 52 is provided on the lower surface of the upper frame member 11. The upper frame member 11 is in contact with the
The height of the receiving member 52 is adjusted so that the horizontal member 3 is gripped. Specifically, the lower end of the upper frame member 12 and the 5
The length of the ram 51 is adjusted so that 2 is approximately the same height. With such adjustment, the jack 5 is gripped by the upper frame member 11 and the horizontal member 3.

Further, the entire operation procedure according to the embodiment of the present invention will be described below. First, as a first procedure, the removed concrete pillar 9 is placed on a sleeper (not shown) having a height of about ten and several centimeters. Next, the lower frame member 13 is inserted below the portion of the concrete column 9 to be crushed, in a direction orthogonal to the concrete column 9, and the center of the lower frame member 13 is placed immediately below the axis of the concrete column 9. . Next, the vertical frame member 12 is fixed to the lower frame member 13 with a bolt 61 and a nut 62 attached to the lower frame member 13. Further, the horizontal member 3 is inserted between the two vertical frames 12 and placed on the concrete column 9.
Next, the upper frame member 11 is bolted to the vertical frame member 12 with the vertical frame member 1.
2 is fixed with a nut 62 attached. Further, the hydraulic jack 5 is placed on the backing plate 32 of the horizontal member 3. At this time, the lower end of the upper frame member 11 and the receiving member 52 of the hydraulic jack 5 are
Jack ram 5 so that the upper end of the
Adjust the length of 1

Next, as shown in FIG. 3, the lever 54 is inserted into the lever fitting portion 53 of the jack, and the lever 54 is pushed down from above. Upon depression, the hydraulic jack 5 pushes the upper frame member 11 in the direction of arrow A and the horizontal member 3 in the direction of arrow B as shown in FIG. 1, but as described above, the upper frame member 11 The horizontal member 3 is pushed down because it is fixed to the lower frame 13 via 12 and the distance between the lower frame 13 and the lower frame 13 does not change.
When the horizontal member 3 is pushed down, the crushing blade 4 strongly presses the concrete column 9 in order from the one closer to the center, and the horizontal blade 42 moves from the portion of the concrete column 9 where the horizontal blade 42 is pressed against the periphery. A crack is generated, and the vertical blade 41
A hole is formed in a portion where a crack is generated by the horizontal blade 42. At the same time, the pressing force acts on the concrete column 9 also from the lower frame member 13, so that a crack is also generated in the portion where the lower frame member 13 is pressed. Further, since the concrete column 9 in which the hole is formed by the vertical blade 41 becomes rapidly brittle against compressive stress, the crack expands over a width of about 50 cm around the portion where the hole is formed, and finally, Then, most of the concrete portion is broken into small pieces and peeled off from the vertical reinforcing bar 91, and the crushing is completed.

If the concrete column 9 is not sufficiently crushed even when the ram 51 is completely extended, the push bolt 22 is turned to push down the caul plate 19, whereby the ram 51 is contracted and the jack 5 is compressed. Once removed, backing plate 3
A spacer (not shown) having a bottom surface shape that fits into the notch 2 is fitted and mounted on the backing plate 32, and after the jack 5 is mounted on the spacer, the lever 54 is pushed down to perform crushing work. Resume.

Finally, the concrete pieces adhered to the vertical reinforcing bars 91 provided in the concrete pillars 9 are crushed with a bar or the like to be dropped, and then the vertical reinforcing bars 91 are removed by a reinforcing bar clipper.
Is cut to divide the concrete column 9. According to these procedures, the concrete can be divided into several meters in length by breaking and cutting work at two or three places of one concrete pillar, and the concrete can be loaded on trucks and transported. Will be possible.

As described above, according to this embodiment, the concrete column can be easily broken at the site. Further, after the break, the bolt can be easily removed by removing the bolt, so that the transition to the crushing work of other concrete columns and the withdrawal can be easily performed. Further, when the crushing blade is damaged, the replacement operation can be performed quickly. The upper frame material and the lower frame material may be channel steel or the like as long as they can withstand the pressing force of the jack. The vertical frame member may be a channel steel or the like as long as the horizontal frame member can freely slide up and down. Similarly,
An H-shaped steel or the like may be used as long as the vertical frame member can be used as a guide rail and can slide freely up and down.

[0023]

As described above, the present invention provides a concrete column crusher, a frame, a horizontal member vertically movable between vertical frame members of the frame, and A jack interposed between a frame member and the horizontal member, and capable of pressing a concrete column placed between the lower frame member of the frame body and the horizontal member via the horizontal member; It consists of a crushing blade formed by a plurality of plate-shaped bodies that are suspended from the lower surface of the member and abut on one side, so when removing the concrete column, the special installation place and power supply are Even without it, the crushing work can be done quickly and safely, and the work load on the workers is lighter than before, so the safety of concrete column crushing work can be ensured and the work efficiency can be improved at the same time .

[Brief description of the drawings]

1 is a front view of an embodiment of the present invention, (2) is a right side view thereof, and (3) is a sectional view taken along line AA.

2 (1) is a view showing a cross section of a vertical frame member and a plane of a horizontal member and a crushing blade, FIG. 2 (2) is a front view thereof, and FIG.
-C sectional drawing, (4) is a perspective view of a crushing blade.

FIG. 3 is a view showing a crushed state of a concrete column according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete column crusher 11 Upper frame material 12 Vertical frame material 13 Lower frame material 14 Web (vertical frame material) 15 Flange (vertical frame material) 16 Seat plate (vertical frame material) 17 Pillow board 18 Seat plate (upper frame material) DESCRIPTION OF SYMBOLS 19 Backing plate 21 Flange (lower frame material) 22 Push bolt 3 Horizontal member 31 Channel steel 32 Backing plate 33 Closure plate 34 Web (channel steel) 35 Flange (channel steel) 4 Crushing blade 41 Vertical blade 42 Horizontal blade 5 Hydraulic jack 51 Ram 52 Receiver 53 Lever fitting part 54 Lever 61 Bolt 62 Nut 9 Concrete column 91 Vertical reinforcing bar A Press upward B Press downward C Lower

Claims (4)

[Claims] 1. A horizontal member having a crushing blade provided on a lower surface thereof, and a guide path which allows the horizontal member to slide up and down with left and right ends of the horizontal member inserted therein are formed. A concrete column crushing machine, comprising: a vertical frame member formed so as to be insertable / detachable; and an upper frame member detachably provided above the vertical frame member. 2. The concrete column crushing machine according to claim 1, wherein the crushing blade is formed by hanging a plurality of plate-like bodies from the horizontal member. 3. The crushing blade according to claim 2, wherein the plurality of plate-like bodies are crossed with each other.
4. A concrete column crusher according to item 1. 4. The crushing blade according to claim 2, wherein lower ends of the plurality of plate-like bodies are formed to be inclined, and the lower ends are formed at a plurality of different angles. The concrete column crusher according to claim 3.