JP3319441B2 - Concrete block cleaving device and cleaving method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaving device and a cleaving method for diagonally dividing a concrete block.

[0002]

2. Description of the Related Art Japanese Patent Publication No. 52-24925 discloses a concrete block cutting apparatus.
As shown in FIG. 4, the apparatus comprises an upper blade 10 and a lower blade 4 connected to a rod side and a head side of one fluid cylinder 6, respectively, and a concrete block fixed on a frame 1 (on a table). The upper blade 10 and the lower blade 4 abut against A,
The concrete block A is divided by pressing down the upper blade 10 with the pressure of the fluid cylinder 6 to form two split blocks.

[0003] In particular, in the disclosed technique, the fluid cylinder 6
And movable parts related to the upper blade 10 and the lower blade 4 (piston rod 7, lower cross beam 8, guide rod 9, upper cross beam 1)
1, the center cross beam 5) is supported by an equilibrium cylinder 13 having a piston rod 12 fixed to the pedestal 3 of the frame 1 so that the magnitudes of forces generated in the upper blade 10 and the lower blade 4 are equalized. In this way, the concrete block A can be stably cut within a predetermined range, so that the defective rate of the split block due to the defective cutting can be reduced.

[0004]

In recent years, as a concrete block application, a split block in which the surface of the block is notched so that the surface has a surface close to natural stone and the uneven surface of the block is formed as a decorative surface is preferred. Is being used. In particular, in the case of a construction block used for construction of a retaining wall, the demand for a retaining block having an inclined dividing plane as such a retaining wall block is rapidly increasing because the entire retaining wall area needs to have a continuous inclined surface configuration.

The above-described cutting device is very suitable for forming a split block. However, since the cutting device has a configuration in which the upper and lower blades abut against the surface of the concrete block to cut the surface, the split device having the above-described inclined split surface is used. No blocks could be formed. Accordingly, since the demand for such diagonally split blocks has rapidly increased, it has been desired to realize a concrete block cutting device capable of performing stable diagonal pressure splitting with a simple operation in order to cope with this.

SUMMARY OF THE INVENTION The present invention has been made in response to the above-mentioned demands, and an object of the present invention is to provide a concrete block cleaving device and a cleaving method capable of performing stable pressure splitting on an appropriate inclined surface. It is.

[0007]

That is, according to the first aspect of the present invention, a cutting device for diagonally splitting a concrete block (A) by a striking operation of an upper blade (10) and a lower blade (4). In the above, the upper blade (10) vertically opposed
And a pedestal (20) installed on the table (1a) with an appropriate inclination with respect to the axis of the lower blade (4), and a fluid cylinder (6) for moving the upper blade (10) up and down.
And an extrusion cylinder (21) for transferring the concrete block (A) supplied on the table (1a) to a predetermined position of the cradle (20) by a lateral extrusion operation of a piston rod (22). It is characterized by becoming.

The present invention according to claim 2 is characterized in that the pushing cylinder (21) is provided with a vertically rotatable abutting portion (23) at the tip end of the piston rod (22). Is what you do.

In the above configuration, since the abutting portion is rotatable, the abutting portion always comes into contact with the block side surface in a plane regardless of the inclination of the concrete block. Be transported.

Further, in the present invention according to claim 3, the breaking position of the concrete block (A) is determined by the maximum stroke length of the piston rod (22).

[0011] With the above configuration, the concrete block can be correctly positioned at a predetermined position (cutting position) of the pedestal.

Further, according to the present invention, the cradle (20) is connected to the frame (1) via an elastic material (24).
Characterized by being supported up and down freely.

[0013] In the above configuration, since the concrete block can be divided by pressure from above and below with a balanced force, defective block cutting can be prevented. Moreover, the structure is simple.

Further, according to the present invention, the pedestal (20) is installed with an appropriate inclination with respect to the axis of the vertically opposed upper blade (10) and lower blade (4). Cradle (2
0) Transfer the concrete block (A) to the specified position
The concrete block (A) is sandwiched from above and below by placing the upper blade (10) and the lower blade (4) close to each other, and the upper and lower blades are further close to each other to divide the concrete block (A) obliquely and appropriately. A split block (A ') having the inclined split cross section (B) is formed.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. To simplify the description, the same reference numerals are used in the following description for portions common to the related art.

FIG. 1 is a front view and a side view schematically showing a main part of a concrete block cutting device according to a first embodiment of the present invention. FIG. 2 is a concrete block cutting device according to a second embodiment of the present invention. FIG. 3 is a front view and a side view schematically showing main parts of FIG. 3, and FIG. 3 is a view showing a process of cleaving a concrete block.

In FIG. 1, the total weight of the fluid cylinder 6, and the movable parts such as the piston rod 7, the lower cross beam 8, the guide rod 9, the upper cross beam 11, and the central cross beam 5 associated with the lower blade 4 associated with the upper blade 10 are shown. Is supported by an equilibrium cylinder 13 fixed to the pedestal 3, which is substantially the same as that of the conventional apparatus shown in FIG. 4, but the front part of the table 1 a (the left end side in FIG. 1 b).
A pedestal 20 of a concrete block A (hereinafter, simply referred to as a block A) having an appropriate inclination θ with respect to the axis of the upper blade 10 and the lower blade 4 which are vertically opposed to
An extruding cylinder 21 for transferring the block A supplied by a conveying device (not shown) to a predetermined position (a cutting position of the block A) of the receiving table 20 is arranged in parallel to a rear portion (the right end side in FIG. 1B) of the table 1a. The point of attachment is different from the conventional device.

The pushing cylinder 21 is, for example, a hydraulic cylinder similar to the fluid cylinder 6 described above. A pushing portion 22 is pivotally attached to the tip of a piston rod 22 so as to be vertically rotatable. I have. The pushing cylinder 21 is attached to a place where the block A is accurately positioned at a predetermined position on the cradle 20 by the maximum lateral movement (maximum stroke length) of the piston rod 22.

In the above configuration, the block A is placed on the table 1a.
Is supplied, first, the extruding cylinder 21 is operated, the abutting portion 23 abuts on the side surface of the block A by the lateral movement of the piston rod 22, and the block A
The table 1a is moved in the direction of the arrow shown in the figure so that the table 1a is pushed out by the abutting portion 23 by the further lateral movement. When the block A reaches the cradle 20 at the front of the table, the block A inclines. However, as described above, the abutment portion 23 is rotatable up and down. The butting is always planar, so that the block A is transported along the inclined surface of the cradle 20 reliably. Therefore, at the maximum stroke of the piston rod 22, the block A
It is fixed at a predetermined position of 0 with an appropriate inclination.

When the block A is positioned, the fluid cylinder 6 is actuated, and as shown in FIG. 3A, the upper blade 10 and the lower blade 4 come close to each other by the lowering operation of the upper blade 10 to move the block A up and down. Tuck more. By further applying a force, the block A is split, and two split blocks A ′ and A ′ having an appropriate inclined split section B as shown in FIG. 3B can be formed. The split blocks A 'and A' on the receiving table 20 are discharged to the outside of the apparatus after being applied to the block A to be cut next to be transferred. Therefore, the blocks continuously supplied from the transport device are sequentially cut diagonally.

Next, a second embodiment of the present invention will be described with reference to FIG.

In this embodiment, the receiving table 20 of the block A having an appropriate inclination is installed at the front of the table 1a, and the pushing cylinder 2 is installed at the rear of the table 1a.
1 is exactly the same as that of the first embodiment described above, but a spring 24 as an elastic material is attached to the central cross beam 5 fixed between the frames 1 at which both ends of the receiving table 20 are opposed to each other. The second embodiment is different from the first embodiment in that the first embodiment is configured to be supported so as to be able to move vertically. In this case, the upper blade 10 is configured to be pressurized by the fluid cylinder 6 attached to the upper cross beam 11. This configuration is also similar to the first embodiment in that the block A can be pressure-divided from above and below with a balanced force. in addition,
This configuration has an advantage that the mechanism can be simplified as compared with the configuration using the balancing cylinder 13 as in the first embodiment.

[0023]

As described above, according to the first and fifth aspects of the present invention, the pedestal of the concrete block is inclined, and the upper and lower blades are approached from the vertical direction to divide the block obliquely. Is adopted, so that the mechanism of the apparatus can be simplified and stable diagonal cutting can be realized by simple operation, and therefore, it is very suitable for forming the inclined split block which is important for construction of a retaining wall such as a newly constructed land in recent years. It is.

According to the second aspect of the present invention,
The extruding cylinder is provided with an abutment that can rotate up and down at the tip of the piston rod, so that even if the concrete block reaches the cradle and inclines, the abutment always stays flat on the block side. The concrete block can be efficiently and reliably transported even on an inclined surface.

According to the third aspect of the present invention,
Since the breaking position of the concrete block is determined by the maximum stroke length of the piston rod, the positioning of the concrete block on the pedestal is easy and accurate. As a result, a divided block of the same size without variation can be formed.

According to the present invention described in claim 4,
Since the pedestal is supported on the frame via an elastic material (spring) so as to be able to move up and down, the concrete block can apply a vertically balanced cutting force to the concrete block by such a simple structure, and a stable diagonal splitting can be performed. Can be realized. As a result, it is possible to reduce the defective cutting of the concrete block.

[Brief description of the drawings]

FIG. 1 is a partially broken view schematically showing a main part of a concrete block cutting device according to a first embodiment of the present invention;
(A) is a front view, (b) is a side view.

FIG. 2 is a partially broken view schematically illustrating a main part of a concrete block cutting device according to a second embodiment of the present invention;
(A) is a front view, (b) is a side view.

FIG. 3 is a diagram showing a process of cleaving a concrete block.

FIG. 4 is a partially broken front view of a conventional concrete block cutting device.

[Explanation of symbols]

 1 Frame 1a Table 4 Lower Blade 6 Fluid Cylinder 10 Upper Blade 20 Cradle 21 Extrusion Cylinder 22 Piston Rod 23 Abutment 24 Elastic Material (Spring) A Concrete Block (Block) A 'Split Block

Claims (5)

(57) [Claims] The concrete block (A) is connected to the upper blade (1).
0) and a lower blade (4), in which the table is inclined at an angle with respect to the axis of the upper blade (10) and the lower blade (4). (1a) A pedestal (20) installed on the top, a fluid cylinder (6) for raising and lowering the upper blade (10), and a concrete block (A) supplied on the table (1a). An apparatus for cutting concrete blocks, comprising an extruding cylinder (21) for transferring a piston rod (22) to a predetermined position on the pedestal (20) by a lateral extruding operation. 2. An abutting portion (23) rotatable up and down on a tip end of a piston rod (22) of the pushing cylinder (21).
The concrete block cutting device according to claim 1, further comprising: 3. The concrete block according to claim 1, wherein a breaking position of the concrete block (A) is determined by a maximum stroke length of the piston rod (22). Cleaving device. 4. The apparatus according to claim 1, wherein said receiving base is supported by a frame via an elastic member so as to be able to move up and down. Concrete block cleaving equipment. 5. A pedestal (20) is installed at an appropriate inclination with respect to the axis of the vertically opposed upper blade (10) and lower blade (4), and concrete is placed at a predetermined position on the pedestal (20). The block (A) is transferred and fixed, the upper blade (10) and the lower blade (4) are brought close to each other, the concrete block (A) is sandwiched from above and below, and the concrete blocks (A) are slanted by bringing both blades closer together. A concrete block (A ') having an appropriate inclined cross section (B).