JP3129035U - Crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crushing apparatus equipped with a crushing arm having a shape capable of taking a concrete structure to be crushed deep inside a crushing arm, and crushing a crushing concrete structure of the same size with a smaller crushing apparatus than before. This will enable the concrete structure to be crushed and disassembled more efficiently.
In a crushing apparatus for a concrete structure provided with a pair of crushing arms (3, 3) used by being attached to an excavator machine, the opposed inner surfaces of the pair of crushing arms (3, 3) are 80 to 100 at the central part. Two straight ridges that bend at a narrow angle, and the outer surface is formed by a smoothly curved ridge, and when the pair of crushing arms 3 and 3 are in a fully open state, The crushing apparatus is configured such that the distance between the tips 3a and 3a of the pair of crushing arms is equal to or close to the distance between the bending points 3b and 3b on the inner side surface of the crushing arm.
[Selection] Figure 1

Description

  The present invention relates to a concrete structure crushing apparatus that is mounted on an excavator machine and used for crushing / demolition of a concrete structure, and more particularly to a shape of a crushing arm that can effectively exert the crushing force of the crushing arm.

Conventionally, as a crushing device 20 for a concrete structure, as shown in FIG. 3, a pair of crushing arms 23 and 23 for sandwiching and crushing a concrete structure to be crushed are formed in a staghorn shape with a tip portion and a central portion inside. Projections 23a and 23b projecting toward the concrete surface, and as shown in FIGS. 4 (a) and 4 (b), the projection 23a or 23b abuts on the concrete structure 10 ′ to be crushed, thereby causing the concrete structure 10 to be crushed. A material is used in which crushing force F is applied to ‘crushed concrete structure 10’ to cause cracking and crushing.
The present inventor has also invented a crushing arm having a similar shape and a crushing apparatus having a cutter blade at the base (Japanese Patent Laid-Open No. 2000-336951).

In the crushing apparatus 20 as described above, since the opening angle of the pair of crushing arms 23 and 23 is limited, the central projections 23b and 23b having a large crushing force F and the crushing force are reduced, but the dimensions are large. It is necessary to properly use the projections 23a and 23a at the tip end portion of the concrete structure to be crushed.
As shown in FIG. 4A, when the size of the concrete structure 10 ′ to be sandwiched is smaller than the distance between the projections 23b and 23b at the center when the crushing arms 23 and 23 are opened, By closing the crushing arms 23, 23, the central projections 23 b, 23 b first come into contact with the concrete structure 10 ′ to be crushed, and a crushing force F is applied to the concrete structure 10 ′ to crush a part thereof. Thereafter, the protrusions 23a and 23a at the tip end abut against the concrete structure 10 ′ to be crushed, and two places of the concrete structure 10 ′ to be crushed can be crushed by one opening and closing of the pair of crushing arms 23 and 23.
However, in order to hold the concrete structure 10 ′ to be crushed by the projections 23b and 23b at the center of the pair of crushing arms 23 and 23, it is necessary to increase the opening angle of the pair of crushing arms 23 and 23. Since the opening angle is limited by the frame that pivotally supports the crushing arm, the size of the concrete structure 10 ′ to be crushed must be smaller than that of the crushing arms 23, 23 when pinched. In other words, in such a case, a larger crusher must be used, and the crusher must be replaced in accordance with the use situation, and various sizes of crushers must be prepared. In addition, the cost is high and the work efficiency is poor. Further, a much larger crusher is required than the size of the concrete structure to be crushed 10 ', and the work in a narrow place becomes difficult.
Also, the length between the central projections 23b, 23b and the base is short, the concrete structure to be crushed cannot be taken deeply into the crushing arms 23, 23, and must be crushed in small increments. There is a problem that enormous dust is generated and a force for extruding the concrete structure 10 ′ to be crushed works and the crushing force cannot be effectively exhibited.

  On the other hand, as shown in FIG. 4 (b), when the size of the concrete structure 10 ′ to be sandwiched is larger than the distance between the projections 23b, 23b at the center when the crushing arms 23, 23 are opened, The protrusions 23a and 23a at the tip end abut against the concrete structure 10 ′ to be crushed and are crushed by applying a crushing force F. In this case, the size of the concrete structure 10 ′ to be crushed is up to the distance between the tips when the crushing arms 23, 23 are fully opened, and a relatively small crushing device can be used. Since the projections 23b and 23b at the center of the abutting portion 23 come into contact with the front surface of the concrete structure 10 ′ to be crushed and prevent the concrete structure 10 ′ to be crushed deeply into the crushing arms 23 and 23, this is also the case. There is a problem that the crushed concrete structure 10 'must be crushed in small increments.

Moreover, when the opening angle of the tip of the pair of crushing arms 23, 23 is large, the crushing force F of the projections 23a, 23a at the tip is less likely to act so as to be orthogonal to the side surface of the concrete structure 10 ′ to be crushed. In this case, a component force is generated in the direction in which the concrete structure 10 ′ to be crushed is pushed outward from the tips of the crushing arms 23, 23. For this reason, the projections 23a and 23a at the tip of the crushing arm receive a force that is pushed back to the shovel machine side and do not effectively bite into the side surface of the concrete structure 10 ′ to be crushed, and the side surface slips and crushes. There is also a risk that it will not be possible.
The phenomenon that the projections 23a and 23a at the tip end slide on the surface of the concrete structure 10 ′ to be crushed can be solved by pressing the crushing device against the concrete structure 10 ′ to be crushed by the crushing arm operation of the excavator machine. Skilled technology is required, and more than necessary attention must be paid to the operation of the excavator machine, resulting in a problem of reducing work efficiency.
JP 2000-336951 A JP-A-11-131824

  In view of the above background art, the present invention provides a crushing device equipped with a crushing arm having a shape capable of taking a concrete structure to be crushed deep inside a crushing arm, and is smaller than conventional crushing concrete structures. The crushing apparatus can be crushed and the concrete structure can be crushed and decomposed more efficiently.

The inventor has solved the above problems by the following means.
(1) An excavator machine mounting apparatus 1, a frame 2 having a crushing arm driving means, and a pair of crushing arms 3 and 3 whose base is pivotally supported by the frame 2 and opened and closed by the driving means. In the crushing device of the constructed concrete structure,
The pair of crushing arms are formed with two straight ridges that are bent with an included angle of 80 to 100 degrees at the center on the inner side and the outer side is formed with a smoothly curved ridge, When the pair of crushing arms 3 and 3 are in a fully open state, the distance between the tips 3a and 3a of the pair of crushing arms is equal to the distance between the bending points 3b and 3b on the inner side surface of the crushing arm or A crusher characterized by being configured to have approximate dimensions.
(2) When the tip of the pair of crushing arms 3 and 3 has a pointed shape, the area in contact with the concrete structure to be crushed is reduced, and when the pair of crushing arms 3 and 3 are closed, both crushing 2. The crushing device according to item (1), wherein the tip ends 3a, 3a of the arms are configured to come into contact with each other without conflicting.

The following effects are exhibited by the crusher of the present invention.
<1> A pair of crushing arms are formed with two straight ridges that are bent with an included angle of 80 to 100 degrees at the center on the inner side, and with a smoothly curved ridge on the outer side. When the pair of crushing arms 3 and 3 are in a fully open state, the distance between the tips 3a and 3a of the pair of crushing arms is equal to the distance between the bending points 3b and 3b on the inner side surface of the crushing arm. Since the crushing arm is fully open, a substantially rectangular space is formed inside the crushing arm, and the crushing target is up to the interval width of the tip of the crushing arm at this time. A concrete structure can be taken deep inside the crushing arm, and a wide part can be crushed by opening and closing the crushing arm once, and an efficient crushing operation can be performed with a relatively small crushing apparatus.
In addition, since the concrete structure to be crushed can be taken deep inside the crushing arm and crushed so as to be held from the tip of the crushing arm, dust is hardly generated and the working environment can be improved.
In addition, since the crushing device of the present invention has a large size that can be clamped when the crushing arm is fully opened, it can cope with various shapes of concrete structures to be crushed and does not need to be frequently replaced with crushing devices of different sizes. Efficiency can be improved.
<2> Since the tip of the crushing arm has a pointed shape and the area that contacts the concrete structure to be crushed is reduced, the tip of the crushing arm can easily bite into the side of the concrete structure to be crushed, There is no risk of slipping on the surface of the crushed concrete structure, and it can be crushed so as to be wound inside the crushing arm, so that the excavator machine can be operated easily and can be efficiently crushed with reduced generation of dust.

Embodiments of the crushing apparatus of the present invention will be described with reference to the drawings of the examples.
FIG. 1 is a front view of the crushing device of the present invention, and FIG. 2 is an operation explanatory view of the crushing device of the present invention. In the figure, 1 is a mounting device for an excavator machine, 2 is a frame, 3 is a crushing arm, 3a is a tip of the crushing arm, 3b is a bending point of an inner side surface of the crushing arm, 4 is a rotating shaft of the crushing arm, and 5 is a crushing arm. The drive means connecting portion 10 is a concrete structure to be crushed.
As shown in FIG. 1, the crushing device of the present invention includes an excavator machine mounting device 1 for attaching the crushing device to a shovel machine, a frame 2 provided with driving means for a crushing arm 3, and the frame 2. A crushing device comprising a pair of crushing arms 3, 3 supported by a base and opened / closed by the drive means, wherein the pair of crushing arms 3, 3 are opposed to each other at a central portion of the crushing arm 3, 3. When two straight ridges are bent with an included angle of ˜100 degrees, and the outer surface is formed with a smoothly curved ridge, and the pair of crushing arms 3 and 3 are in a fully open state. The distance between the tips 3a and 3a of the pair of crushing arms is configured to be equal to or close to the distance between the bending points 3b and 3b on the inner side surface of the crushing arm.

The crushing of the concrete structure by the crushing apparatus of the present invention is performed according to the following procedure.
(I) First, as shown in FIG. 2 (a), a driving means (not shown) connected to the driving means connecting portion 5 pulls the driving means connecting portion 5 in the direction of the arrow, thereby crushing arms 3, 3 The pair of crushing arms 3 and 3 are rotated around a rotating shaft 4 which is pivotally supported by the frame 2 (see FIG. 1) to open the tips thereof.
(Ii) The front ends 3a and 3a of the pair of crushing arms 3 and 3 that are fully opened are advanced along the side surface of the concrete structure 10 to be crushed, and in a substantially rectangular space formed inside the crushing arms 3 and 3. The concrete structure 10 to be crushed is taken in [FIG. 2 (b)].
At this time, since there is nothing inside the crushing arms 3 and 3 that abuts the front surface of the concrete structure 10 to be crushed and impedes its incorporation, the concrete structure 10 is bent on the inner side surface of the crushing arm. It is possible to capture deeply to the position of the line connecting the points 3b and 3b.
(Iii) The driving means pushes the driving means connecting portion 5 to close the tips 3a, 3a of the crushing arms, and the tips 3a, 3a of the crushing arms abut against the side surfaces of the concrete structure 10 to be crushed. F is added to the side surface of the concrete structure 10 to be crushed to cause cracks [FIG. 2 (c)] and crushed [FIG. 2 (d)].
At this time, the tip portions 3a and 3a of the crushing arms 3 and 3 have a pointed shape, so that they can easily bite into the concrete structure to be crushed, and there is no risk of slipping the surface of the concrete structure to be crushed. The force F is effectively transmitted to the concrete structure 10 to be crushed.

As described above, in the crushing device of the present invention, since the opposing inner surfaces of the pair of crushing arms 3 and 3 are bent at an angle of 80 to 100 degrees near the center, the crushing arms 3 and 3 are fully opened. When in a state, a substantially rectangular space is formed inside the crushing arms 3, 3, and there is no place in contact with the concrete structure 10 to be crushed from the base to the tip 3 a, 3 a of the crushing arm, and deep to the vicinity of the base. The concrete structure 10 to be crushed can be taken in, a wide part can be crushed, and the amount of crushing by one opening and closing of the crushing arms 3 and 3 can be greatly increased.
Further, since the tips 3a and 3a of the crushing arms 3 and 3 have a pointed shape, the crushing arm tips 3a and 3a are easy to bite into the side surface of the concrete structure 10 to be crushed, and there is no risk of sliding on the surface. Since it can crush so that it may be taken in into the crushing arms 3 and 3 from the front-end | tip 3a, 3a, generation | occurrence | production of dust can be suppressed and the efficient crushing operation | work which does not require the skillful operation technique is attained.

Front view of the crusher of the present invention Action diagram of the crusher of the present invention Front view of conventional crushing treatment Action explanatory diagram of conventional crusher

Explanation of symbols

1: Mounting device to excavator machine 2: Frame 3: Crushing arm 3a: Tip of crushing arm 3b: Bending point of inner side of crushing arm 4: Rotating shaft of crushing arm 5: Drive means connecting portion 10, 10 of crushing arm ': Concrete structure to be crushed 20: Conventional crushing device 23: Conventional crushing arm 23a: Projection at the tip 23b: Projection at the center F: Crushing force

Claims (2)

An excavator machine mounting device 1, a frame 2 having a crushing arm driving means, and a pair of crushing arms 3 and 3 whose base is pivotally supported by the frame 2 and opened and closed by the driving means. In crushing equipment for concrete structures,
The pair of crushing arms are formed with two straight ridges that are bent with an included angle of 80 to 100 degrees at the center on the inner side and the outer side is formed with a smoothly curved ridge, When the pair of crushing arms 3 and 3 are in a fully open state, the distance between the tips 3a and 3a of the pair of crushing arms is equal to the distance between the bending points 3b and 3b on the inner side surface of the crushing arm or A crusher characterized by being configured to have approximate dimensions. The tip of the pair of crushing arms 3 and 3 has a pointed shape, reduces the area in contact with the concrete structure to be crushed, and when the pair of crushing arms 3 and 3 are closed, the tip of both crushing arms The crushing apparatus according to claim 1, wherein the crushing apparatus is configured such that 3 a and 3 a come into contact with each other without any difference.