JPS6131267B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a working concrete crushing device for crushing concrete into small pieces without making a loud breaking sound at a building demolition work site or the like.

Conventionally, work to demolish buildings, roads, and other concrete structures involves breaking the concrete using breakers, and then transporting the large chunks of broken concrete as-is to a disposal site by truck. However, disposing of these large concrete blocks as they are in a landfill site poses problems from the perspective of landfill disposal, and recently, concrete blocks cannot be disposed of unless they have been crushed into as small a size as possible. They are becoming more oriented towards standards.

If the destroyed concrete is crushed into relatively small chunks, there is of course no problem in disposing of it in a landfill, and the crushed stone can be reused as aggregate for concrete. It is advantageous. For this reason, recently a method has been adopted in which a crusher is installed at the concrete demolishing site to crush large concrete blocks, but installing a crusher at each concrete demolishing site means that This adds an extra step of crushing using a crusher to the work process of discarding the lumps, which poses a problem in terms of work efficiency.

The present invention is a crushing method that can easily crush relatively large concrete blocks destroyed by a breaker on the spot into small blocks suitable for disposal without using a crusher, which is a problem in concrete demolition work as described above. The purpose is to provide equipment.

The concrete crushing device of the present invention having the above object consists of a base body attached to the tip of the arm of a work machine and a plurality of upper blades fixed to the lower part of the base body and having a large number of teeth on the lower surface. A lower blade consisting of an upper blade unit, a plurality of lower blades pivotally connected to one end of the upper blade and extending parallel to the upper blade, and an arm extending outside the pivot point of these lower blades. unit, the tail end of the cylinder and the piston rod of this cylinder are pivotally connected to the base body and the arm, respectively, and the blade part of the upper blade unit is formed to be oriented in the direction in which the upper blade is pivoted, and constituted by arranging a plurality of auxiliary blades perpendicular to the lower blade in the spaced apart part of the lower blade and located between the respective tooth patterns of the upper blade,
By operating the piston cylinder to close the two blades with a large destroyed concrete lump sandwiched between the upper and lower blades, the two blades and the auxiliary blade compress and crush it into small lumps, and further these small lumps are crushed with the lower blade. It is characterized in that it is made to fall directly from the part separated from the auxiliary blade.

Next, the present invention will be described in detail with reference to the illustrated embodiment. FIG. 1 is a side view of the crushing device according to the present invention in a state where the upper and lower blades are open. As shown in the figure, this crushing device has a fixed upper blade unit 3 attached to the tip of an arm 1 of a working machine (not shown).
A movable upper blade unit 4 is rotatably connected to the upper blade unit 3, and a hydraulic cylinder 5 is installed between the upper and lower double blade units 3 and 4 to open and close both units. It is made up of

The upper blade unit 3 includes a base body 7 having a mounting plate 6 for the arm 1 and the rotation rod 2 in the arm on the back;
It consists of a plurality of upper blades 8 fixed to the lower part of this base body 7. The base body 7 has a bearing hole 9 at its upper end, and the upper end of the hydraulic cylinder 5 is rotatably attached to this bearing hole 9 via a support shaft 10. The upper blade 8 is made up of two parallel plates and has a bearing hole 11 at one end, and has a plurality of teeth 12 on the lower surface spaced apart from each other with the tips of the teeth facing toward the bearing hole 11. These two upper blades 8 are welded and fixed in parallel to both sides of the lower surface of the base body 7 in a direction perpendicular to the length direction of the base body 7.

Further, the lower blade unit 4 is composed of a plurality of lower blades 13 and an arm portion 14 protruding from the rear of the lower blades 13. The lower blade 13 consists of three parallel approximately L-shaped plates, and each plate is interposed with a plurality of auxiliary blades 15 so as to maintain a gap in which the upper blade 8 of the upper blade unit 3 fits. and are mutually and integrally supported. As shown in FIG. 5, the lower blade 13 of the husband has a pointed tip 25, and the upper edge 16 of each cross section is chevron-shaped. Also each lower blade 1
The auxiliary blade 15 that maintains the spacing of 3 is installed between the teeth 12 of the upper blade 8 in the upper blade holder 3, with its upper edge 17 located at a lower position than the upper edge 16 of the lower blade 13. It is being A bearing hole 18 is provided above the other end of the upper blade 8, respectively.
Husband bearing portion 19 provided with this bearing hole 18
In between, the bearing portions 20 of the bearing holes 11 in the upper blade 8 are fitted with a difference between each bearing hole 1.
A support shaft 21 is inserted into the shafts 8 and 11, and the lower blade 13 is supported so as to be rotatable relative to the upper blade 8.

At the rear of the lower blade 13, an arm 14 is protruded to connect the respective lower blades 13 together, and a bearing hole 22 provided at the tip of the arm 14 is provided.
The tip of a piston rod 23 in the hydraulic cylinder 5 is rotatably mounted on a support shaft 24.

The concrete crushing device according to the present invention has the above-mentioned structure, and in the state before crushing work,
As shown in FIG. 1, by retracting the piston rod 23 of the hydraulic cylinder 5, the lower blade 13 is released from the upper blade 8 about the support shaft 21.

When crushing concrete, the tip end portion 25 of the lower blade 13 is inserted under the concrete mass 26 by operating the arm 1, and the concrete mass 26 is scooped onto the lower blade 13. When the lower blade 13 scoops up the concrete mass, the piston rod 23 of the hydraulic cylinder 5 is slightly extended to rotate the lower blade 13 upward as shown in FIG.

Once the concrete lump 26 is securely placed on the lower blade 13, the piston rod 23 of the hydraulic cylinder 5 is fully extended to push the lower blade 13 toward the upper blade 8, and the concrete lump 26 is placed on the upper blade 8. It is clamped and compressed between the lower blade 13 and the lower blade 13. Since the teeth 12 of the upper blade 8 are oriented inward, that is, toward the pivot point of the double blades 8 and 13, the gripping state of the concrete lump 26 is reliably maintained, and as the push-up of the lower blade 13 becomes stronger, the concrete The lump 26 is prevented from slipping out from between the upper and lower blades 8 and 13. The lower blade 13 and the upper blade 8 are configured to be located within their respective gaps, and an auxiliary blade 15 supports the gap between the lower blades 13.
is located between the teeth 12 of the upper blade 8, so that the piston rod 23 of the cylinder is fully extended as shown in FIG.
When the concrete blocks are closest to each other, the clamped concrete lumps initially touch the teeth 12 of the upper blade 8 and the lower blade 13.
A relatively large fracture occurs at the upper edge 16 of the tooth 1, and then the tooth 1
2 and the auxiliary blade 15 of the lower blade 13, it is further crushed into smaller pieces and falls from the space between the lower blade and the auxiliary blade.

As described above, in the concrete crushing apparatus according to the present invention, the upper blade unit 3 is the fixed side attached to the tip of the working machine arm 1, and the fixed upper blade unit 3
The lower blade unit 4 is rotatably connected to the lower blade unit 4 at one pivot point, and a hydraulic cylinder 5 is connected to one end of the lower blade unit 4 and the upper end of the upper blade unit 3.
Since the lower blade 13 of the lower blade unit 4 scoops up the concrete mass, the upper and lower blades 8, 13
It can be rotated so that it can be easily clipped between the
The work of scooping up and crushing concrete lumps can be carried out efficiently.

In addition, since the upper blade 8 and the lower blade 13 are configured so that a plurality of blade plates are arranged in a staggered manner, the advantage is that concrete lumps caught between the two blades can be reliably crushed. have Therefore, by using the crushing device according to the present invention, concrete blocks can be quickly crushed at the site where a concrete structure is being demolished without producing a large breaking sound, making it possible to dispose of concrete blocks in accordance with the requirements of concrete block disposal standards. This has the practical benefit of being efficient.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the concrete crushing device according to the present invention with the lower blade open;
The figure is a sectional view of the side with the lower blade closed, Figure 3 is a sectional view taken along the - line in Figure 2, Figure 4 is a perspective view showing the configuration of the upper blade unit, and Figure 5 is a cross-sectional view of the lower blade unit. A perspective view showing the configuration, and FIG. 6 is a side view showing the operating state. In the figure: 1: Arm, 3: Upper blade unit, 4: Lower blade unit, 5: Cylinder, 6: Mounting plate, 7: Base,
8: Upper blade, 9, 11, 18: Bearing hole, 10, 2
1, 24: Support shaft, 12: Teeth, 13: Lower blade, 14:
Arm part, 15: Auxiliary blade, 16: Upper edge of upper blade, 17: Upper edge of auxiliary blade, 23: Piston rod.

Claims (1)

[Claims] 1. An upper blade unit consisting of a base body attached to the tip of the arm of a working machine, a plurality of upper blades fixed to the lower part of this base body and having a large number of teeth formed on the lower surface thereof, and an upper blade unit pivotally attached to one end of the upper blade. The lower blade unit includes a plurality of lower blades extending parallel to the upper blade and an arm extending outward from the pivot joint of these lower blades, and a cylinder is attached to the base body and the arm. The tail end and the piston rod of this cylinder are respectively pivotally connected, while the blade part of the upper blade unit is formed so as to be oriented in the direction in which the upper blade is pivoted, and furthermore, the blade part of the upper blade unit is formed so as to be oriented in the direction in which the upper blade is pivotally connected, and further, the blade part of the upper blade unit is formed so as to be orthogonal to the lower blade. A working concrete crushing device characterized in that a plurality of auxiliary blades are arranged between the teeth of the upper blade.