JPH0551733B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a bucket-type crushing apparatus for crushing a structure made of reinforced concrete or the like and then crushing a concrete mass produced after crushing into small pieces.

Conventional technology At concrete demolition work sites for structures such as reinforced concrete, a concrete demolition machine or the like is used to demolish the concrete, and the resulting concrete mass is carried out using a dump truck or the like and discharged to a disposal site such as a landfill. . However, if the concrete lump is large, the amount that can be transported by a dump truck or the like will be reduced, which will reduce the transport efficiency. In addition, some dumpsites do not accept large concrete blocks, and if the concrete blocks become small, they can be reused as secondary products instead of earth and sand for land leveling, and concrete blocks can be recycled. It is also currently being reused as aggregate.

For this reason, it is necessary to reduce the concrete mass to a small concrete mass below a certain level, but this process has conventionally been carried out in a concrete crushing plant or the like. However, this plant is rarely used at concrete demolition sites because it is expensive and inconvenient to transport. In addition, small-sized concrete demolition machines are sometimes used to perform small-scale breaking work, but these concrete demolition machines crush concrete chunks by catching them between the crushing blades of two arms that open and close, so they are extremely difficult to break. This method is inefficient, and the size of the crushed concrete blocks varies, making it extremely difficult to form concrete blocks of a certain size.

In addition, as disclosed in Utility Model Application No. 58-160951, two hydraulic cylinders attached to both sides of the bucket can be used to open and close working members installed on both sides of the bucket or in the center of the bucket. A bucket for construction machinery has been proposed that crushes concrete, etc. This method requires hydraulic cylinders to be installed on both sides of the bucket, but if the hydraulic cylinders are installed inside the bucket, the effective area of the bucket decreases and the efficiency of crushing work decreases.
If the hydraulic cylinder is attached to the outside of the bucket, the bucket itself may become bulky, making it difficult to maneuver. Therefore, the diameter of the hydraulic cylinder is also limited, making it impossible to perform effective crushing work using a high-output hydraulic cylinder, and as mentioned above,
It is also difficult to divide concrete blocks into smaller pieces.

Problems to be Solved by the Invention The present invention is convenient to carry, allows concrete blocks to be easily divided into small pieces at a concrete demolition work site, and can be standardized to a certain size or less. The purpose is to obtain a crushing device for crushing concrete blocks.

Means for Solving the Problems The bucket-type crushing device of the present invention is provided with a crushing device in the bucket, which has an effective area corresponding to the bottom surface of the bucket and has an arm that opens and closes along the opening of the bucket. D. A plurality of crushing points are attached to the arm over its entire surface, and holes are provided in the bottom of the bucket facing the points of the arm corresponding to the attachment positions of each point, The above-mentioned problem has been solved by a configuration characterized in that a hydraulic cylinder for opening and closing is arranged approximately in the center of the upper surface of the bucket.

Action: A collection of concrete lumps is scooped up by the bucket, and then the hydraulic cylinder is operated to rotate the arm to crush the concrete between the point provided on the arm and the opposing surface of the bucket. As a result, the concrete lumps that have been crushed into small lumps fall through holes provided on the opposing surface of the bucket, and are uniformized into concrete lumps of a certain size or less.

Embodiment FIG. 1 is a side view of an embodiment of the present invention, FIG. 2 is a bottom view of the same, FIG. 3 is a left side view in FIG. 1, and FIG. 4 is a right side view in FIG. 1. , FIG. 5 is an explanatory diagram of the operation of the same embodiment. 1a, 1b
is a bucket mounting member, and the bucket mounting member 1
a, 1b are fixed by welding or the like to the main plate 2 constituting the bucket, and the bucket mounting members 1a, 1b
There are mounting holes 1a-1, 1a-2, 1b-1, 1b-2 for attaching this crushing device to the arms of hydraulic construction machines such as hydraulic shovels and crawler shovels.
is provided. Further, between the bucket mounting members 1a and 1b, that is, approximately at the center of the upper surface of the bucket, a large-diameter hydraulic cylinder 4 is rotatably fixed with shafts 5a and 5b. Side plates 3a and 3b are fixed to both sides of the main plate 2 by welding or the like, and the main plate 2 and side plates 3a and 3b constitute a bucket. A plurality of holes 6 are formed in the surface of the main plate 2 constituting the bottom surface of the bucket bag, and ribs 8 are further provided to reinforce the strength of the bottom surface. Further, a plurality of claws 7 are provided at the tip of the main plate 2, that is, at the entrance of the bucket, to facilitate scooping up concrete lumps into the bucket. Further, a plurality of auxiliary crushing blades 9 are provided on the inside of the bottom surface of the bucket of the main plate 2, that is, on the inside that constitutes the bucket. A crushing device 11 is rotatably mounted inside the bucket via a shaft 10 provided between the side plates 3a and 3b constituting the bucket. It is composed of a rotary cylinder 12 that rotates and an arm 13 fixed to the rotary cylinder 12, and the arm 13 has a sharp tip for crushing concrete corresponding to each hole 6 provided on the bottom of the bucket. A plurality of points 14 are fixed. The effective area of the arm 13 is approximately equal to the bottom area of the bucket. Further, the rotary cylinder 12 is provided with an auxiliary blade 1 for crushing concrete.
5 is fixed. The arm 13 is rotatably fixed to the piston rod 16 of the hydraulic cylinder 4 through a shaft 17, and the arm 13 opens and closes toward the opening surface of the bucket by the operation of the hydraulic cylinder 4. Further, a gap 18 is formed between the arm 13, the rotary cylinder 12, and the main plate 2, and is used to allow small pieces of concrete, etc. that have entered the back side of the arm 13 to pass through the gap 18 and be discharged from the hole 6. . A hole 19 is also provided in the main plate 2, and this hole 19 is also provided for discharging small pieces of concrete.

Next, the operation of this embodiment will be described.

Mounting hole 1a-1, 1 on arm of hydraulic shovel, etc.
Attach the bucket crusher via a-2, 1b-1, and 1b-2, open the arm 13 as shown in Figure 1, scoop up the concrete mass into the bucket, and then operate the hydraulic cylinder 4. As shown in FIG. 5, the arm 13 is rotated around the shaft 10 in
When the bucket is rotated counterclockwise in FIG. Auxiliary blade 1
5, it is crushed into small pieces and falls through a hole 6 provided in the bottom of the main plate 2. At this time, the concrete mass in the bucket is supported by the outer periphery of each hole 6, and the crushing point 1 enters the center of the hole 6.
4, so it is crushed reliably. In this way, the concrete lumps are scooped up and crushed by the crushing device 11 into concrete lumps smaller than the holes 6, making it possible to form a collection of uniform concrete lumps of a certain size or less. .

FIG. 6 shows another embodiment of the present invention, and the difference from the first embodiment is that the arm 13' of the crushing device 11 is
The mounting shaft 10' is eccentric, and the hydraulic cylinder 4 is actuated to open and close the arm 13' from the open position to the closed position, thereby increasing and amplifying the action of splitting and crushing the concrete mass. This is what I did.

In this embodiment, an arm 13' is provided on the shaft 10' slightly above the inside of the bucket, and an arm 13' is pivotally connected to the shaft 10', and a point 13' is attached to the shaft 10' in place of the auxiliary blade 15.
4 is provided. The other configurations and operations are the same as in the first embodiment.

As mentioned above, this bucket crusher is
Ribs 8 are provided on the arm 13 of the crushing device 11 and the bottom of the back plate of the bucket to increase the strength.
In addition to crushing concrete lumps, it can also be used for demolition work such as hooking and peeling off road asphalt or concrete dirt floors with the claws 7.

Further, the crushing point 14 is fixed with a nut or the like so that it can be replaced when the point 14 is worn out.

Effects of the Invention The present invention scoops up concrete lumps into a bucket and crushes the concrete lumps into small pieces using a crushing device inside the bucket, which eliminates the need for large equipment as in the past, resulting in a simple and inexpensive device. It is possible to crush concrete lumps and perform concrete subdivision work at concrete demolition work sites.

Instead of grasping and crushing the concrete lumps one by one as in the past, the system uses points attached to the entire surface of the arm, which has an effective area corresponding to the bottom of the bucket, and a method that corresponds to these points. Since the concrete lumps inside the bucket are pressed and clamped between the holes provided in the bottom of the bucket, so as to shear them, the crushing work efficiency is improved, and the concrete lumps crushed inside the bucket are crushed. It becomes small pieces and falls through the hole provided in the bottom of the bucket, and the concrete lump becomes a collection of only those smaller than the hole size, so the size of the concrete lump is standardized, making it convenient for transporting and reusing the concrete lump. , and you won't have to worry about finding a place to dispose of it. In addition, since the concrete mass is made into small masses, the concrete mass and reinforcing bars can be completely separated, making it more efficient. In addition, the back plate of the bucket is reinforced with ribs to increase its strength for crushing concrete lumps, so it can be used to remove asphalt, concrete roads, and dirt floors.
It can also be used for demolition work.

In addition, since the hydraulic cylinder that opens and closes the arm is placed approximately in the center on the top side of the bucket, the effective area of the bucket is reduced and the efficiency of crushing work is improved compared to when hydraulic cylinders are installed on both sides of the bucket. There are no problems such as the bucket falling or the bucket itself becoming unnecessarily bulky and making it difficult to maneuver. Therefore, a hydraulic cylinder with a large diameter can be used, and a powerful crushing device can be provided.

[Brief explanation of drawings]

1 is a side view of one embodiment of the present invention, FIG. 2 is a bottom view of the same, FIG. 3 is a left side view of FIG. 1, FIG. 4 is a right side view of FIG. The figure is an explanatory diagram of the operation of the same embodiment, and FIG. 6 is a side view of another embodiment. 1a, 1b...bucket mounting member, 2...main plate, 3a, 3b...side plate, 4...hydraulic cylinder,
6... Hole, 7... Claw, 8... Rib, 9... Auxiliary blade, 11... Crushing device, 13... Arm, 14...
…point.

Claims (1)

[Claims] 1. A crushing device is provided in the bucket, and includes an arm that has an effective area corresponding to the bottom surface of the bucket and opens and closes along the opening of the bucket, and the arm has a crushing point. A plurality of holes are provided on the bottom of the bucket, which faces the points of the arm, corresponding to the mounting positions of the respective points, and a hydraulic cylinder for opening and closing the arm is installed approximately at the center of the top of the bucket. A bucket-type crushing device that is characterized by being installed in the department. 2. The bucket crusher according to claim 1, wherein at least a surface of the bucket facing the point surface of the arm is reinforced in strength. 3. A bucket crusher according to claim 1 or 2, wherein the point is replaceably attached to the arm.