JPS6041391Y2 - crusher biting machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a biting machine for a crusher used for crushing concrete lumps or pile heads of concrete piles.

Conventionally, concrete lumps after demolishing concrete pillars,
In order to crush the pile heads that protrude above the ground after concrete piles are erected, a biting machine is used to crush them.

This biting machine was designed to crush concrete lumps and the like using two hydraulically operated biting tools, and the shape of the biting tools was as shown in FIGS. 1 and 2.

In Fig. 1, claw-like teeth 1a, 2a are provided oppositely at the tips of an upper biting tool 1 and a lower biting tool 2, and parallel teeth 1b, 2b with a gap are provided toward the rear from there. be.

The claw-shaped teeth 1a, 2a are provided to prevent concrete lumps etc. from falling from the meshing part, and the parallel teeth 1b,
2b crushes concrete lumps and the like.

Figure 2 shows a tooth profile formed for the purpose of crushing large concrete lumps, etc., and the tips of the upper bite tool 3 and the lower bite tool 4 have claw-like shapes with the same purpose as in Figure 1. Tooth 3 a,
4a are provided facing each other, and parallel teeth 3b and 4b are provided which become smaller in depth and larger in space toward the rear.

However, according to the conventional chewing machine having the above-mentioned biting tool,
For example, when a concrete pillar is crushed, the unbroken concrete mass 5 is broken into reinforcing bars 6, as shown in FIG.
It remains attached to the surface and remains in small pieces that cannot be crushed.

In order to completely crush these concrete lumps 5, a smaller biting machine must be used, and the reinforcing steel 6
The disadvantage is that it requires a separate cutter to cut the material, which is time-consuming, and it is expensive to prepare separate mechanical tools.

The present invention eliminates the above-mentioned drawbacks and provides a crusher bite tool that can crush concrete, cut reinforcing bars, and separate concrete from reinforcing bars, and has a simple structure that can be used as an attachment. That is.

Embodiments of the present invention will be described in more detail below with reference to the drawings.

FIG. 4 is an overall view of the crusher. Reference numeral 1 denotes a base machine movable by the rotation of caterpillars 2, which supports one end of a bending/extending arm 3.

The bending/extending arm 3 has two arm parts 3a and 3 that bend/extend using hydraulic pressure.
The arm part 3a swings around the support shaft of the base machine 1 by the extension and contraction operation of the hydraulic cylinder rod 5, and the arm part 3b swings around the support shaft of the base machine 1 by the extension and contraction operation of the hydraulic cylinder rod 5.
a Swings around the support shaft at the tip.

The arm portion 3b includes a hydraulic cylinder 6 and a hydraulic cylinder 6.
A cylinder rod 7 is provided which slides inside the arm portion 3.
A biting machine 8 is provided at the tip of b, and the tip of the cylinder rod 7 is connected to a lever lever 9 of the biting machine 8.

As shown in FIG. 5, the biting machine 8 has a cylinder rod 7 rotatably connected to one end of a lever lever 9 by a shaft 10, and is movable via an operating lever 11 supported at an intermediate portion of the lever lever 9. It is connected to the biting tool 12, and the other end of the lever lever 9 is connected to the arm portion 3b.
It is rotatably supported by a shaft 14 on a fixed biting tool 13 fixed to the tip of the.

The movable biting tool 12 is supported by a shaft 15 at an intermediate portion of the fixed biting tool 13 and can be opened and closed, and forms a meshing part with the fixed biting tool 13.

The tip of the movable biting tool 12 has angular beak-shaped regulating teeth 12a protruding so as to cover the tip of the fixed biting tool 13, and prevents them from escaping from the biting part when chewing concrete lumps, etc. To prevent.

The meshing portion between the movable biting tool 12 and the fixed biting tool 13 is provided with a plurality of meshing teeth 12b and 13a each having an uneven shape. In this case, the teeth are arranged so that a gap 16 is formed between the meshing teeth 12b and 13a, as shown by the dashed line in FIG. 5, and is used as an escape space for crushed concrete pieces.

Furthermore, the regulating teeth 12a and the meshing teeth 12b of the movable biting tool 12
A cutter tooth 17 facing in a direction perpendicular to the arrangement direction of the meshing teeth 12b is fixedly provided between them.

Cutter teeth 18 that mesh with the cutter teeth 17 are fixed to the fixed jaw 13 to form a cutter, and the reinforcing bars are cut when the movable jaw 12 is closed.

For this reason, the cutter teeth 17 and 18 are made of hard material,
Its shape has a block shape with a square cross section, and if the cutter teeth 17 and 18 lose their sharpness as a result of using the cutter many times, the cutter teeth 17 and 18 are fixed by rotating them by 1/4 turn.
Move the tooth surface to keep it sharp at all times.

Next, the operation of the biting machine having the above-described configuration will be explained.

When the cylinder rod 7, which is moved by hydraulic pressure, pushes the lever lever 9, the lever lever 9 rotates counterclockwise in the figure about the shaft 14.

As the lever lever 9 rotates, the operating lever 11 is pushed, and the rotary bite tool 12 moves counterclockwise in the figure around the shaft 14.

Therefore, the movable biting tool 12 meshes with the fixed biting tool 13, as shown by the solid chain line in FIG.
b and 13a engage the head of the concrete mass or concrete pile, and the regulating teeth 12a crush the concrete mass while preventing it from escaping from the engagement part.

After crushing the concrete to expose the reinforcing bars inserted into the concrete pile, cutter teeth 17 and 18 are engaged to cut the reinforcing bars.

The cutter teeth 17 and 18, which are arranged perpendicularly to the arrangement direction of the meshing teeth 12b and 13a and provided at the tips of both the meshing tools 12 and 13, are suitable for pile cap processing, and are suitable for removing reinforcing bars. Since it can be cut into small pieces, it is convenient for cleaning up the reinforcing bars.

In the above embodiments, the tooth shapes of the meshing teeth 12b and 13a are rectangular, but the tooth shapes may be made larger, and the cutter teeth are not limited to a square cross section, but may have a rectangular cross section, or may have a concave tooth shape with a convex shape. It is also possible to combine cutter teeth with a shape of a shape.

Further, in the above embodiment, the angular beak-shaped regulating tooth 12a was provided protruding from the tip of the movable biting tool 12, but the shape of the regulating tooth 12a may be made into a beak-like shape with a sharp point. Can be done.

In this case, for example, when digging up the road surface of a paved road on which asphalt has been laid, if the regulating tooth 12a is inserted into the lower surface of the asphalt from the tip, the road surface can be easily dug up. be.

As is clear from the above explanation, according to the present invention, concrete lumps can be broken into small pieces, and reinforcing bars can also be cut, so they can be sorted and transported easily when cleaning up afterwards. Secondary use of crushed pieces becomes possible.

In addition, it is small and lightweight, making it easy to transport.For example, it is possible to remove the excavator from an excavator and install the biting machine of the present invention, and it can also be used with other existing construction machines. It can be easily installed and used as an attachment.

Furthermore, there is no need to prepare a new hydraulic system, and the already installed cylinder rod can be used, which has the advantage of being economical.

[Brief Description of the Drawings] Fig. 1 is a side view showing a tooth profile of a biting tool used in a conventional biting machine, Fig. 2 is a side view showing another tooth profile of a conventional biting tool, and Fig. 3 is a side view showing a tooth profile of a biting tool used in a conventional biting machine. FIG. 4 is a partial side view of a concrete pile after crushing concrete, FIG. 4 is an overall side view of a crusher, and FIG. 5 is an enlarged side view of a biting machine showing an embodiment of the present invention. 7... Cylinder rod, 9... Lever lever, 12... Movable bite tool, 12a...
・Regulation tooth, 12b...Meshing tooth, 13...
・Fixed biting tool, 13a...Meshing teeth, 17/18
...Cutter teeth that form a cutter.

Claims (1)

[Scope of utility model registration request] A movable base machine, a bending arm supported at one end on the base machine so as to be freely bendable and having a hydraulic cylinder and a cylinder rond at its tip, and a flexing arm provided at the tip of the flexing arm and connected to the cylinder rond. In this crusher, one of the movable jaws is connected to the cylinder rond via a lever, and the other movable jaw is fixed to the tip of the movable jaw. A regulating tooth is provided to cover the tip of the biting tool, a concave-convex meshing tooth is provided in each of the meshing portions of the two biting tools, and the meshing tooth is provided between the regulating tooth and the meshing tooth at right angles to the arrangement direction of the meshing tooth. A crusher biting machine equipped with a facing cutter.