JPH0828025A - Chipping machine for concrete face - Google Patents

Abstract

PURPOSE:To precisely and efficiently chip a concrete face. CONSTITUTION:A cylinder 9 provided with a downward piston rod 10 is fixed at the front of a frame 1 which is freely transferable with the front wheels 7 and the rear wheel 8. A chipping tool 19 is directly fixed to the front end of the piston rod 10. The piston rod 10 is vertically moved at a high speed by the supply of hydraulic fluid to the cylinder 9 and a floor face is struck by the chipping tool 19 to break it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chipping machine for removing, chipping or roughening concrete surfaces, hard resin coated surfaces, steps of passages, oil mud portions and the like.

[0002]

2. Description of the Related Art For example, for chipping of concrete surfaces, pneumatic chippers or the like have hitherto been used to chip concrete surfaces by hitting a steel chisel or flat chisel head with a piston rod of a cylinder.

[0003]

The conventional pneumatic chipper, which utilizes the principle of a hammer that hits the chisel head with a piston rod, in order to transmit the energy of the piston to the tip edge of the chisel, There is a problem that a large amount of energy is required, the cylinder becomes large, and the flea moving stroke inevitably becomes large, and even if it is the smallest and careful, it becomes unevenness of 3 to 4 cm, and it is impossible to chip in millimeter units.

[0004] Particularly, in construction work, there are many demands for efficient concrete chipping in millimeters at a chipping site. For this reason, a pneumatic chipper is used, and after extra chipping,
Although the method of placing mortar or concrete is adopted, it is the current situation that waste of time and money is required because disposal of a large amount of concrete waste and curing curing period of mortar etc. are required. is there.

Therefore, an object of the present invention is to efficiently transfer the energy of the cylinder to the tip of the chipping tool, and to concretely surface the surface of concrete or the like relatively flatly in millimeters and efficiently. To provide a chipping machine.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is directed to a frame which is movable by being supported by wheels, in which a piston rod is expanded and contracted by supplying a pressure fluid, and a stroke of the piston rod is expanded. Fix a cylinder with a length of 100 mm or more so that the piston rod faces downward,
At the tip of this piston rod, a chisel tool for striking the floor surface when the piston rod is extended is attached, and the frame has a weight corresponding to the reaction force when the chisel tool strikes the floor surface. .

[0007]

[Operation] When pressure fluid is supplied to the cylinder with the chipping tool attached to the tip of the piston rod, the piston rod expands and contracts, and the chiseling tool strikes the floor surface when it extends and moves the frame to move the floor surface. Continuously crush and chip.

Since the chipping tool is directly fixed to the tip of the piston rod, the energy of the piston can be efficiently transmitted to the tip of the chipping tool, and the cylinder has a long stroke of 100 mm or more for the piston rod. Therefore, the impact force on the floor surface can be increased.

Further, since the frame has a weight that supports the reaction force generated when the chipping tool hits the floor surface, the chipping efficiency is improved and the chipping tool stroke is constant, so that the chipping in millimeters is achieved. Can be done.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in the figure, the frame 1 is provided with an upright portion 3 on the front surface side of a box-shaped base 2 so as to be tiltable rearward from an upright state around a fulcrum 4, and rearward on the rear side of the upright portion 3. The handle 5 protruding inward is fixed, and the folding and bending rod 6 which can be folded between the box-shaped base 2 and the upper end of the upright portion 3 can fix the upright state of the upright portion 3. , Large-diameter front wheels 7 arranged on both front sides of the base 2,
It is movable by a small-diameter rear wheel 8 provided at the rear part.

A cylinder 9 is fixed in the upright portion 3 such that its piston rod 10 faces downward, and the cylinder 9 is arranged vertically when the upright portion 3 is upright.

From the upstream side, in the middle of the air supply pipe 12 connected to the upper end of the cylinder 9 through the nipple 11.
Main air cock 13, automatic dehydrator 14, automatic lubricator 1
5 is provided, the air supply to the cylinder 9 is stopped by the air cock 13, the air supply amount is adjusted, the moisture in the air is removed by the automatic dehydrator 14, and the automatic oil dispenser 1 is installed.
At 5, an appropriate amount of lubricating oil is automatically supplied into the air.

Although not shown in detail in the figure, the cylinder 9 has a two-way plate valve 16 at the upper end portion for automatically switching the supplied air between two directions of pushing up and pushing down the piston.
And upper and lower air holes 17 and 18 for setting the upper and lower limits of the vertical movement of the piston. When the main air cock 13 is opened and air is supplied to the cylinder 9, the piston and the piston provided therein are provided. The rod 10 reciprocates up and down at high speed. In addition, the piston rod 1 of the cylinder 9
The extension / contraction movement of 0 may be performed by hydraulic pressure.

A chipping tool 19 is detachably fixed to the lower end of the piston rod 10 of the cylinder 9.

In the illustrated case, the chipping tool 19 is a bit in which a large number of chips 21 made of cemented carbide are provided on the lower surface of the block-shaped head 20, and the head 2 is provided at the tip of the piston rod 10.
0 is externally inserted, and this fitting portion is connected with a pin. When the piston rod 10 of the cylinder 9 is at the lower limit, the tip of the tip 21 is 10 to 15 mm below the grounding point of the front wheel 7. Is located. Note that the chipping tool 19 is not limited to the illustrated bit, and may be any tool that is suitable for the material and conditions of the chipped surface, and may have a structure such as a chisel.

As the cylinder 9, a piston rod 10 having a long vertical stroke of 100 mm or more is used. As described above, when the stroke of the piston rod 10 is 100 mm or more, the speed and impact force during the downward movement are improved, and the impact force of the chipping tool 19 directly connected to the piston rod 10 can be increased.

Chiseling tool 1 by expansion and contraction of the cylinder 9
Since a reaction force that pushes up the frame 1 is generated at the time of hitting the floor surface with 9, weights 22 are installed in the base 2, and balance weights 23, 23 are detachably attached to both side surfaces of the upright portion 3, The weight of the entire frame 1 is increased in a balanced manner to match the reaction force to improve the impact efficiency of the floor with the chisel tool 19.

The chipping machine of the present invention has the above-described structure. When the chipping machine is moved, the bending and stretching rod 6 is bent to tilt the upright portion 3 of the frame 1 backward as shown in FIG. The handle 5 should be raised from the surface.
It may be moved by hand pushing or by driving the front wheels by a motor provided in the base 2 though not shown.

Next, in order to carry out the chiseling work, as shown in FIGS. 1 and 2, the bending and extending rod 6 is extended to erect the upright portion 3, and the air supply pipe 12 is connected to the air supply source. The main air cock 13 is opened to supply air to the cylinder 9.

The piston rod 10 of the cylinder 9 performs a vertical stroke of a constant stroke at high speed by the supply of air, and when the lower limit is reached, the chipping tool 19 causes the chip 21 on the lower surface to move.
Hit the floor with.

As described above, the concrete floor surface is crushed by the repeated impact of the chipping tool 19, and if the frame 1 is moved while impacting, the chipping over a desired range can be performed.

In the cylinder 9, the stroke of the piston rod 10 is as long as 100 mm or more, and since the chipping tool 19 is directly connected to the piston rod 10, a large striking force against the concrete floor surface is obtained and the descending limit of the chipping tool 19 is obtained. The position accuracy is high, and the surface of the concrete floor surface can be chipped with a thickness of millimeter. Specific examples of the chipping processing part will be listed below.

(I) Inside the building, after removing the hoist etc., the opening crushed concrete of the post-cast concrete is crushed and chipped (II) The irregularity of the concrete joint is corrected (III) Leveling material Before casting, to improve the adhesive strength and to secure the adhesive (IV) Rubbing joints of old and new concrete or mortar (general repair work by chippers) (V) Karakreet, ferrocery. Removal of hard surface parts (VI) Removal of hard resin (epoxy, polyester, acrylic, etc.) (VII) Correction of steps in factory passages and removal of oil mud (VIII) Removal of bridges, roads, concrete roughening, road white lines in parking lots (IX) Machine installation table Concrete pouring joint Rough chipping

[0025]

As described above, according to the present invention, the chipping tool is directly attached to the tip of the piston rod of the cylinder provided on the frame, and the stroke of the piston rod of the cylinder is 100.
In addition to mm and more, the weight of the frame is set to be commensurate with the reaction force of the chipping tool when hitting the floor, so the impact force of the cylinder is increased and the chipping efficiency of the chipping tool is improved.
In addition to being able to perform efficient chiseling work, the precision of the lower limit position of the chiseling tool is good, and it becomes possible to chisel the required thickness in millimeters.

Further, the hitting position of the floor surface by the chipping tool becomes accurate, the accuracy of the chipping position is good due to the mobility of the frame, and not only the concrete floor surface but also a wide range of chipping work can be performed.

[Brief description of drawings]

FIG. 1 is a side view showing a state of a chiseling machine during chiseling work.

FIG. 2A is a vertical sectional front view of the same, and FIG.

FIG. 3 is a side view showing a state when the chiseling machine is moving.

[Explanation of symbols]

 1 frame 7 front wheel 8 rear wheel 9 cylinder 10 piston rod 12 air supply pipe 19 chipping tool

Claims (1)

[Claims] 1. A cylinder, which is movable by being supported by wheels, expands and contracts by the supply of pressure fluid, and a cylinder having a piston rod stroke of 100 mm or more is fixed so that the piston rod faces downward. Then, at the tip of this piston rod, attach a chipping tool that hits the floor surface when the piston rod extends, and attach the frame to a chipping surface such as a concrete surface that weighs the reaction force when the chipping tool hits the floor surface. Machine.