JPH067182Y2 - Mass concrete crusher - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a crushing device for massive concrete, and more specifically, a large crushing noise of concrete that is a structural body at a construction demolition work site or the like. The present invention relates to an improvement of a crushing device capable of crushing finely without generating a blast.

[Prior art]

Conventionally, at the work site where concrete structures such as buildings and roads are demolished, large block concrete destroyed by a breaker is transported to the landfill site as it is or discarded, or this block concrete is After crushing it into small pieces with the crusher device installed in, it is transported and discarded, or the small crushed concrete is reused as the aggregate of newly placed concrete.

However, in the case of the former, it is inconvenient because the disposal standard is changing so that it cannot be discarded unless it is crushed small in terms of landfill treatment, and in the case of the latter, it becomes inconvenient. Since it is necessary to add a process for crushing into small pieces, there is a problem that work efficiency is reduced.

Therefore, the applicant has developed and registered a crushing device capable of crushing a relatively large block of concrete broken by a breaker into small blocks suitable for disposal on the spot without using a crusher device. 1675205
No. (Jitsuko Sho 61-28839) was obtained as a utility model registration.

That is, this crushing device projects a fixed lower jaw member provided with a receiving blade on the front part of the device body attached to the tip of an arm of a working machine such as a power shovel, and a plurality of base members of the fixed lower jaw member. One end of a movable upper jaw member projecting a crushing blade is attached to the shaft, and the driving device operates the upper jaw member to crush the massive concrete sandwiched between the receiving blade of the lower jaw member and the crushing blade of the upper jaw member into small pieces. However, it has been found that when the crushing blade as the compression means is broken or worn to a large extent and the crushing amount with the lumped concrete increases, an inconvenient crushing work cannot be performed.

Therefore, the inventor made further improvements and trial production,
A plurality of holes are formed in the receiving blade of the fixed lower jaw member in this crushing device, and the crushing blades are arranged at positions corresponding to these holes, and each crushing blade has a mounting portion protruding from its conical head. Is inserted into the attachment hole of the upper jaw member, the attachment member is attached to the neck portion provided in the attachment portion, and further the attachment member is fixed and held by a stopper, and the crushing blade can be freely attached to and detached from the movable upper jaw member. It was found that the above-mentioned inconvenience can be avoided by arranging the crushing blade so that the crushing blade can be replaced as appropriate when the crushing blade is worn or broken.

[Purpose of device]

Therefore, an object of the present invention is to provide a crushing device for massive concrete that does not cause any inconvenience to crushing work even if the crushing blade is worn or broken.

[Summary of device]

The present invention is a movable upper jaw in which a fixed lower jaw member provided with a receiving blade is projected on the front part of a device body attached to the arm tip of a working machine, and a plurality of crushing blades are projected on the base of the fixed lower jaw member. One end of the member is pivoted, and a plurality of holes are formed in the receiving blade of the fixed lower jaw member in the crushing device for crushing massive concrete between the receiving blade of the fixed lower jaw member and the crushing blade of the movable upper jaw member. The crushing blades are arranged at positions corresponding to the holes of the crushing blades, and each crushing blade has a mounting portion projecting from its conical head inserted into the mounting hole of the upper jaw member, and a neck portion provided on the mounting portion. It is characterized in that a mounting member is mounted, and further, the mounting member is fixedly held by a stopper, and the crushing blade is detachably attached to the movable upper jaw member.

〔Example〕

Next, a preferred embodiment of the crushed concrete crushing apparatus according to the present invention will be described in detail below with reference to the accompanying drawings.

1 and 2, a block concrete crushing device according to the present invention includes a device body 3 attached to an arm 1 of a working machine such as a power shovel via a bracket 2,
Basically, a fixed lower jaw member 4 projecting from the lower end of the front surface of the apparatus main body 3, a movable upper jaw member 5 axially attached to the base of the fixed lower jaw member, and a drive device 6 for the movable upper jaw member 5 are basically provided. It is configured.

That is, the main body 3 of the apparatus has a bracket 2 provided on the top thereof by means such as welding or fastening, and the end of the hydraulic cylinder 8 of the drive unit 6 is rotatably provided above the inside through a horizontal shaft 9. It is pivoted.

Further, the fixed lower jaw member 4 has a pointed portion 10 formed at the tip 3
It is provided with a number of plate members 11a, 11b, 11c, and is provided on the upper surfaces of these plate members 11a, 11b, 11c and at a predetermined interval in the spacing portion at a right angle to the plate members 11a, 11b, 11c. By forming the upper surfaces of the frame members 12a, 12b, 12c into acute angles, the lattice-shaped blade 13 is provided as a whole (see FIG. 3).

On the other hand, the movable upper jaw member 5 is pivotally attached to the base of the fixed lower jaw member 4 via a shaft 14 so that its rear end portion is rotatable. The movable upper jaw member 5 has holes 15 formed by the lattice-shaped receiving blades 13 of the fixed lower jaw member 4 and each pointed portion 10.
Crushing blades 16 are respectively provided at the positions corresponding to the separated portions.

As is apparent from FIGS. 4 to 6, these crush blades 16 are provided with a mounting portion 18 projecting from a conical head 17 formed by using, for example, a cemented carbide, and the mounting portion 18 is provided. After inserting into the mounting hole 19 formed at a predetermined position of the upper jaw member,
The attachment member 2 is attached to the neck portion 20 formed in a part of the attachment portion 18.
1 is mounted from the horizontal direction, and further, the mounting member 21 is fixed to the side wall of the upper jaw member 5 via the stopper 22, so that the mounting member 21 can be attached to and detached from the upper jaw member 5. In this case, as in this embodiment, the crushing blade 16
It is preferable that the mounting portion 18 is inserted into the mounting hole 19 of the upper jaw member by inserting the receiving seat member S so that the stress applied to the crush blade 16 does not directly act on the upper jaw member.

Further, the operation of the piston rod 23 of the hydraulic cylinder 8 axially mounted on the apparatus main body 3 is axially mounted on the upper end of the movable upper jaw member 5, and the movable upper jaw member 5 is mounted on the shaft 14 by the operation of the hydraulic cylinder 8. Is configured to rotate with respect to the fixed lower jaw member 4.

When crushing massive concrete with the crushing device according to the present invention having such a configuration, the pointed portion 10 of the fixed lower jaw member 4 is retracted with the piston rod 23 of the hydraulic cylinder 8 retracted to open the movable upper jaw member 5. Is inserted under the block concrete, and the block concrete is scooped up on the lower jaw member 4. Next, the piston rod 23 of the hydraulic cylinder 8 is extended to push down the movable upper jaw member 5 in the direction of the fixed lower jaw member 4 with the shaft 14 as a fulcrum, and the lump concrete is compressed between the crushing blade 16 and the lattice-shaped receiving blade 13. At this time, since the crushing blade 16 corresponds to the position where the separated portion of the pointed portion 10 and the hole 15 are formed, the crushing blade 16 is first of all.
Satisfactorily penetrates into the lump concrete, whereby the lump concrete is roughly crushed.

Then, as the compression by the movable upper jaw member 5 further progresses, the roughly crushed concrete mass is crushed between the conical head 17 of the crushing blade 16 and the lower side surface of the movable upper jaw member 5 and the blade portion of the lattice-shaped receiving blade 13. Further, it is crushed into smaller pieces and falls through the holes 15 and the like.

When the crushing blade 16 as a compression means is worn or broken in the crushing work of such lumpy concrete, the piston rod 23 is retracted to pull up the upper jaw member 5, and then the stopper 22 is loosened to remove the mounting member 21. By removing the crushing blade 16 from the side wall of the upper jaw member 5, the attachment hole 19 of the upper jaw member 5 is removed.
Then, the mounting portion 18 of the new crushing blade is inserted into the mounting hole 19 to attach the mounting member 2 to the neck portion 20 of the mounting portion 18.
1 may be attached, and the attachment member 21 may be fixed to the side wall of the upper jaw member 5 by the stopper 22.

[Effect of device]

As described above, according to the crushing apparatus of the present invention, not only can crushing massive concrete at a site where a concrete structure is demolished without making a loud breaking noise, but also this concrete mass can be crushed into smaller pieces. Moreover, even if the crushing blade as the compression means, which is the main consumable component, is worn or broken, only the corresponding crushing blade can be replaced easily and quickly, so that the work efficiency can be improved. And the practical effect is extremely large.

The preferred embodiment of the concrete crushing apparatus according to the present invention has been described above, but the present invention is not limited to this embodiment, and various modifications can be made without departing from the spirit of the present invention. Of course.

[Brief description of drawings]

FIG. 1 is a side view showing a preferred embodiment of the crushed concrete crushing apparatus according to the present invention with the movable upper jaw member open, and FIG. 2 shows the movable upper jaw member shown in FIG. 1 with the movable upper jaw member closed. Partial cross-sectional side view, FIG. 3 is a perspective view of a fixed lower jaw member of the crushing device shown in FIG. 1, and FIG. 4 is a partial cross-sectional view showing a state in which a crush blade is attached to the upper jaw member of the crushing device shown in FIG. A side view and FIG. 5 are partially cutaway front views of FIG. FIG. 6 is an exploded explanatory view showing the relationship between the upper jaw member and the crush blade. 3 ... Device main body, 4 ... Fixed lower jaw member, 5 ... Movable upper jaw member, 6 ... Drive device, 13 ... Lattice-shaped receiving blade, 16 ... Crushing blade, 17 ... Conical head, 18 ... Mounting portion, 19 ... Mounting hole , 20 ... Neck, 21 ... Mounting member, 22 ... Stopper.

Claims (1)

[Scope of utility model registration request] 1. A movable lower jaw member provided with a receiving blade on a front portion of an apparatus main body attached to an arm tip of a working machine, and a plurality of crushing blades protruding on a base portion of the fixed lower jaw member. In a crushing device for axially attaching one end of an upper jaw member and crushing massive concrete between a receiving blade of a fixed lower jaw member and a crushing blade of a movable upper jaw member, a plurality of holes are formed in the receiving blade of the fixed lower jaw member. The crush blades are arranged at positions corresponding to these holes together, and each crush blade has a mounting portion projecting from its conical head inserted into the mounting hole of the upper jaw member, and a neck provided on the mounting portion. A crushed concrete crushing device, characterized in that a mounting member is attached to the portion, the mounting member is fixedly held by a stopper, and the crushing blade is detachably attached to the movable upper jaw member.