JPH11336018A - Removel device for injection joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with a shaping work of a joint by sandwiching a blade for removing a joint material between two or more sheets of diamond blades and fitting cutter disks in which spacers are interposed between each diamond blade and the removal blade for the joint material respectively, to a rotary shaft. SOLUTION: Blades 8 for removing a joint material are sandwiched between two or more sheets of diamond blades 7 and disk-form spacers are sandwiched between respective diamond blades 7 and the blades 8 for removing the joint material to constitute a cutter disk 6. The contact face of the injected joint material with concrete is cut together with the concrete to have an arbitrary width and depth, in the diamond blade 7. The blades 8 for removing the joint material is positively rotated by a driving power to scrape out concrete chips and the injection joint material. Further, the spacer 9 serves for adjustment of the cut width of the joint. In this way, the injected joint material can be removed without breaking the concrete joint.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection joint removing device for simultaneously performing joint cutting and joint material removal when performing repair work or the like of an existing injection joint material injected into an joint of a concrete structure or the like. .

[0002]

2. Description of the Related Art A large-sized concrete structure such as a concrete pavement always has a joint portion, and the joint portion contains a molded or injection type joint material. Therefore, in order to remove the joint material conventionally injected, a plurality of gears 2 are circumferentially arranged and sandwiched between two rotating disks 1 as shown in FIG. An injection joint removing device 5 serving as a joint cleaner for rotating the rotating shaft 3 in the direction of arrow R to remove the injection joint from the joint portion 4 as shown in FIG.
I've been using

[0003] However, in the above-mentioned joint cleaner removing operation using the joint cleaner, it is impossible to completely remove the joint filler material, and it is inevitable that the joint joint of concrete is destroyed. For this reason,
It was necessary to cast concrete into the destroyed joint and cut the joint after the concrete had hardened.

[0004] In addition to the above-mentioned joint material removal work, there is a manual work, but there is a problem that the work speed is slow and a physical burden on an operator is large.

[0005]

SUMMARY OF THE INVENTION According to the present invention, joint cutting of an arbitrary width and removal of an injected joint material can be performed in the same step, and both ends of the joint are cut with an appropriate joint width.
An injection joint removal device capable of scraping out concrete cutting powder and an injection joint material during that time is provided.

[0006]

According to the present invention, a joint removing blade is sandwiched between two or more diamond blades, and a spacer is interposed between each diamond blade and the joint removing blade. It consists of an injection joint removal device that cuts into joints such as concrete while rotating the rotating shaft to which the cutter disk is fixed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an injection joint removing device according to the present invention will be described below with reference to the drawings. FIG. 1 shows a cutter disc 6 of the injection joint removing device according to one embodiment.
FIG. 2 is a side view of the injection joint removing device 5 to which the cutter disk 6 of FIG. 1 is mounted during a removal operation, and FIG. 3 is a side view of the device of FIG. 2 during movement. ,
FIG. 4 is a perspective view of the cutter disk 6 of FIG. 1, and FIG. 5 is an exploded front view of each member constituting the cutter disk 6 of FIG. 4 before assembling.

First, as shown in FIGS. 2 and 3, the cutter disc 6 mounted on the injection joint removing device 5
A blade 8 for joint removal is sandwiched between two or more diamond blades 7 such as four or four blades as shown in FIG. 1, and a disc-shaped blade is provided between each diamond blade 7 and the blade 8 for joint material removal. The spacer 9 is interposed.

The diamond blade 7 attached to the cutter disk 6 is desirably for cutting joints of concrete, and the joint material removing blade 8 is easy to scrape the injected joint material in the joints 4 as shown in FIG. The gear-shaped steel blade as shown in FIG. 7 is desirable, and a tip saw blade as shown in FIG. 7, a sprocket blade as shown in FIG.

Further, various steel disks having an appropriate thickness are prepared as the spacers 9. The two or more diamond blades 7 cut the contact surface of the injected joint material with the concrete to an arbitrary width and depth together with the concrete, and the joint material removing blade 8 sandwiched therebetween is positive. One or a plurality of concrete cutting powders and the injected joint material are pinched so as to be rotated by power, and the spacer 9 plays a role of adjusting the cutting width of the joint.

As shown in FIG. 1, the cutter disk 6 is fixed to a member of the rotating shaft 3 through a knock 11, and the rotating shaft 3 is connected to the injection joint as shown in an enlarged side view of FIG. The removal device 5 is driven by the engine in the power housing 10.

The cutter disk 6 has an upper half or more covered with a cover 12, and as shown in FIG.
During the removal operation, air A from the air outlet 13 of the compressed air pipe 20 attached to the lower portion of the cover 12 blows off the cut joint material or cutting powder such as concrete from the joint portion 4 and also removes the inside of the cover 12. The suction port 14 is opened to the suction hose 15 so as to be sucked.
An end of a cooling water hose 16 is opened in the cover 12 so that the diamond blade 7 is cooled by the cooling water W.

Further, as shown in FIGS. 2 and 3, the bogie on which the power storage body 10 is mounted is provided with a self-propelled rear wheel 17 rotated by a hydraulic motor and a front wheel 18 raised and lowered by a hydraulic jack. Cutter disk 6 as shown in FIG.
Is rotated in the direction of the arrow R by driving the rotating shaft 3 with the fixed, and cut into the joint portion 4 by its own weight, and the joint material removing operation is performed while moving in the direction of the arrow F by the rear wheel 17. 18 is moved up by a hydraulic jack to move.
A mechanism similar to a concrete cutter or the like generally used in the related art can be employed.

[0014]

According to the injection joint removing device of the present invention described above, it is possible to remove the injection joint material without destroying the concrete joint portion during joint repair work.
The joint shaping work conventionally required becomes unnecessary.

According to the apparatus of the present invention, a joint material removing blade is interposed between the diamond blades and is positively rotated by power. Each operation of removal can be performed in the same process, and concrete cutting powder and the joint material can be actively scraped out during the same operation, and the work period for these operations can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a side view showing a cross section of a main part of a cutter disk of an injection joint removing device according to an embodiment of the present invention.

FIG. 2 is a side view of the injection joint removing device equipped with the cutter disc of FIG. 1 during operation.

FIG. 3 is a side view of the apparatus of FIG. 2 during movement.

FIG. 4 is a perspective view of the cutter disk of FIG. 1;

FIG. 5 is an exploded front view of the members constituting the cutter disk of FIG. 4 before assembly.

FIG. 6 is an enlarged side view of a main part of the injection joint removing device of FIG. 2;

FIG. 7 is a front view showing another embodiment of the joint removing blade shown in FIG. 5;

FIG. 8 is a front view showing another embodiment of a joint removing blade different from that of FIG. 7;

FIG. 9 is a side view of a conventional joint removing device.

FIG. 10 is a perspective view of the rotating disk of FIG. 9;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 3 Rotation axis 4 Joint part 5 Injection joint removal apparatus 6 Cutter disk 7 Diamond blade 8 Joint removal blade 9 Spacer

Claims (1)

[Claims] 1. A cutter disk having a joint material removing blade sandwiched between two or more diamond blades and a spacer interposed between each diamond blade and the joint material removing blade is attached to a rotating shaft. An injection joint removal device that cuts into joints such as concrete while rotating its rotating shaft.