JPH0376385B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a crushing device for crushing concrete of concrete structures and asphalt of asphalt roads.

BACKGROUND ART Conventionally, a crushing device is already known that is attached to a power shovel or the like, opens and closes a pair of arms using hydraulic pressure, and crushes concrete or the like using a crushing claw or the like provided at the tip of the arm. However, these known crushing devices are dedicated to crushing objects such as concrete crushing and asphalt crushing, and although they can crush objects other than those for which they are intended, their ease of use is limited. This was bad and greatly reduced work efficiency.

Problems to be Solved by the Invention The present invention aims to improve the above-mentioned drawbacks of the conventional example, and provides a crushing device that can be used efficiently even if the object to be crushed changes or the content of the work changes. It's about doing.

Means for solving the problem In a crushing device that crushes structures, etc. by opening and closing an arm driven by a drive device such as a hydraulic device, a plurality of holes for attaching claws are formed in a matrix on the crushing surface of the arm. On the other hand, prepare multiple types of claws to be attached to the hole, select the most suitable claw depending on the object to be crushed and the content of the work, and attach it to the hole of the arm to destroy or crush structures, etc. I decided to do this.

Action In the destruction work of structures and roads, the objects to be destroyed and crushed include concrete, asphalt, wood, and reinforcing bars generated by crushing concrete. Therefore, the present invention performs crushing work by selectively attaching the most suitable pawl to the most suitable hole in the arm of the main body of the crushing device according to the object to be crushed, thereby efficiently and economically destroying and crushing the object. Work is done.

Embodiment FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a right side view of the same, FIG. 3 is a left side view of the same, and FIG.
A front view when using the arm in the same example,
FIG. 5 is a sectional view taken along the line AA in FIG. 1.

Reference numeral 1 denotes a crushing device main body, and the crushing device main body 1 includes side plates 2a fixed to a mounting plate 15 at regular intervals;
2b, a pair of arms 3a, 3b which are rotatably connected to the side plates 2a, 2b at their middle parts by shafts 8a, 8b, and which are arranged opposite to each other;
It consists of links 4a and 4b and a hydraulic cylinder 9, which are rotatably connected to the rear ends of a and 3b by shafts 6a and 6b, respectively, and the other ends of the links 4a and 4b are fixed to the hydraulic cylinders. Members 5a, 5b
are rotatably connected to each other by shafts 7a and 7b. Piston rod 10 of the above hydraulic cylinder 9
is fixed to the mounting plate 15 and the bracket member 8 to which the mounting plate 15 is attached, and when pressure oil is supplied to the hydraulic cylinder 9, the hydraulic cylinder 9 itself moves up and down in FIG. ing. The hydraulic cylinder 9 is guided to move up and down by guide members 14a and 14b fixed to the hydraulic cylinder 9, which engage grooves 13a and 13b provided in the side plates 2a and 2b, respectively. The bracket member 10 has attachment holes 11 and 12 through which it can be attached with a pin or the like to the tip of an arm of a boom of a working machine such as a power shovel. As shown in FIG. 1, the ends of the arms 3a and 3b have joint parts 3a' and 3b' that join each other when the arms 3a and 3b are closed, and are pivotally connected to the joint parts 3a' and 3b'. A plurality of holes 15 are provided in a matrix between the points. In other words, in the examples shown in Figures 2 and 3, there are 15 holes in total, 3 in the row (horizontal) direction and 5 in the column (vertical) direction. . A pawl 20 is attached to the hole 15 with a bolt 21, a nut 22, etc. in a freely replaceable manner. In this embodiment, a substantially conical claw 20 is attached, and in FIGS. 2 and 3,
1st row, 2nd row, 3rd row, 4th row from the upper hole,
Assuming that the holes are in the fifth row, in this embodiment, the claws 20 are attached to the holes 15 in the first, third, and fifth rows of the arm 3a, and the holes in the second and fourth rows are installed in the arm 3b. 1
A claw 20 is attached to 5.

Next, the operation of this embodiment will be explained.

The crushing device is attached to the arm of the boom of a working machine such as a power shovel through the attachment holes 11 and 12 of the bracket member 10, and the hydraulic pressure is activated to open the arms 3a and 3b as shown in FIG. If concrete, etc. of the structure is sandwiched between both arms 3a and 3b, and then hydraulic pressure is applied in the opposite direction, since the piston rod 10 is fixed to the mounting plate 15 and the bracket member 11, the hydraulic cylinder 9 itself becomes a guide member. 14a, 14b and grooves 13a, 13b, and attempts to close both arms 3a, 3b via links 4a, 4b as shown in FIG. This causes the claws 20 to crush the concrete structure.

Since the claws 20 used in this example have a conical shape, the concrete structure will be crushed into small pieces. Further, in this embodiment, the reinforcing bars exposed by crushing the concrete structure can be hooked to the claws 20 and pulled out.

However, when crushing an asphalt paved road or the like, in the above embodiment, the claws 20 sink into the asphalt, making it impossible to crush the asphalt. In addition, even when crushing a concrete structure, it is not necessary to crush it into small pieces, but if you want to crush it into large pieces and crush it efficiently, it is better to use a different nail instead of the conical nail 20 used in the above embodiment. may be effective.

Therefore, depending on the object to be crushed and the task, a plurality of types of claws suitable for the crushing are prepared, and the claws are changed and used depending on the object and the task.

6 to 10 show examples of this replacement claw. The examples shown in FIGS. 6 and 7 are truncated pyramid-shaped claws 23 and 24. is a rectangle with a square bottom and a top with a pair of opposite sides equal to the length of one side of the square on the bottom and the other pair of sides shorter than one side of the square on the bottom. The claw 24 shown in FIG. 7 has a rectangular bottom and top surface, the long sides of the bottom and top are equal, and the short side of the top is shorter than the short side of the bottom, making it a pyramidal claw 24.

Further, the claw 25 shown in FIG. 8 has a square bottom surface, and the top part is parallel to one side of the bottom surface and has sides of equal length, and the claw 25 shown in FIG.
Reference numeral 6 denotes a claw whose bottom surface is rectangular and whose top is parallel to and equal in length to the long sides of the rectangle on the bottom surface. Further, the claw 27 shown in FIG. 10 is a claw whose tip is bent into a dogleg shape. In addition, 23a, 24a, 2
5a, 26a, 27a are claws 23, 24, 2, respectively.
5, 26, 27, and are fitted into the holes 15 of the arms 3a, 3b of the crusher main body 1, and the claws 23 to 26 are connected to the arms 3 by nuts.
This is for fixing to a and 3b.

Therefore, these claws 20 and claws 23 to 26 are installed in the holes 15 of the arm in an arrangement suitable for the crushing work in accordance with the object to be crushed and the work. A conical claw 20 may be attached as in the embodiment shown in FIGS. 1 to 5 above, or a sixth
It is also possible to attach claws 23 and 25 as shown in FIGS. In addition, when crushing asphalt or breaking large concrete structures, please use the
It is sufficient to attach claws 24 and 26 as shown in the figure.
In addition, in FIGS. 2 and 3, the claws 24 and 26 may be attached to the holes 15 in the row direction (horizontal direction) or in the column direction (vertical direction). It can be installed in any direction and in any hole. Further, in order to remove reinforcing bars etc. after crushing concrete etc., conical pawls 20 may be attached as in the embodiments shown in FIGS. 1 to 5 above, but it is more To make it easier to pull out the reinforcing bars, use claws 2 as shown in Figure 10.
7 may be attached, and claws 27 may be used to make it easier to hook the reinforcing bars. Furthermore, the holes 15 of the arms 3a, 3b
If the holes 15 are provided at equal distances vertically and horizontally, and the length between the holes 15 is equal to the length of one of the bottom surfaces of the claws shown in FIGS.
By adhering to the nail, a nail as shown in FIG. 7 or 9 is formed, so that the number of types of nails can be reduced.

Furthermore, the claws 20 and 23 shown in each of the above examples
27 shows examples of claws used to crush concrete or asphalt or remove reinforcing bars, but when demolishing a structure, if you want to remove wood from pillars etc. without damaging it, use soft claws such as rubber. It is also possible to attach claws made of a material to the arms 3a, 3b so as to take out objects that should not be damaged.

In the above embodiment, the joints 3a' and 3b' are provided at the tips of the arms 3a and 3b, but these joints themselves can be attached as easily as the claws, and can be joined as necessary to suit the purpose of use of the crushing device. It is also possible to attach a section. Furthermore, in the above embodiment, the piston rod of the hydraulic cylinder is fixed, and the cylinder is moved by hydraulic pressure to open and close the arm, but unlike the conventional example,
An arm may be pivotally connected to the piston rod to open and close the arm. Furthermore, a drive device other than hydraulics, such as a motor, may be used.

Effects of the Invention As described above, the present invention provides a crushing device for crushing structures etc. with an arm that is opened and closed by a drive device such as hydraulic pressure.
A plurality of holes for attaching crushing claws are arranged in a matrix, and multiple types of claws are prepared to be attached to the holes, so that the optimum size and shape of the claws can be selected according to the object to be crushed and the content of the work. Since the crushing work is carried out by attaching the arms to the holes of the arm in the optimum arrangement and mounting direction, various crushing works can be carried out efficiently with one main body of the crushing apparatus. In addition, various tasks can be performed simply by replacing the claws, making it efficient and economical.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a right side view of the same, FIG. 3 is a left side view of the same, and FIG.
A front view when the arm is opened in the same example,
FIG. 5 is a sectional view taken along the line A-A in FIG. 1, and FIGS. 6 to 10 are views showing other examples of claws. 1...Crushing device main body, 2a, 2b...Side plate, 3
a, 3b...Arm, 4a, 4b...Link, 9
... Hydraulic cylinder, 10 ... Piston rod, 1
5...hole, 20, 23, 24, 25, 26, 27
……nail.

Claims (1)

[Claims] 1. A crushing device that crushes structures, etc. by opening and closing an arm using a drive device, which includes a crushing device main body in which a plurality of holes for attaching claws are arranged in a matrix on the crushing surface of the arm, and a plurality of types to be attached to the holes. A crushing device consisting of a combination of claws, in which the optimum claw is attached to the hole according to the object to be crushed.