JPH11226941A - Apparatus for breaking concrete block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a defective product or damage in the case of breaking a large-sized concrete block by installing a table via a buffer and providing many upper and lower blades individually vertically movable and a plurality of side blades individually anvancingly and retractably. SOLUTION: A table 8 is installed via a buffer 6 for buffering an impact in a vertical direction. Then, many downward upper blades 26 are horizontally linearly aligned in an individually vertically movable state, and upper blade cylinders 27 corresponding to them are provided. Similarly, many upward lower blades 37 are aligned oppositely to the blades 26 in an individually vertically movable state, and lower blade cylinders 38 corresponding to them are provided. Further, a plurality of horizontal side blade cylinders 43 directed toward an inside of a side girder 2 are vertically installed, and side blades 45 are individually mounted at their ends. The blades 45 slide on side blade guide fixed to a side frame 7 to horizontally advance or retract toward or from upward of an upper surface of the table 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block breaking device suitable for breaking a large-sized concrete block.

[0002]

2. Description of the Related Art Conventionally, concrete piles for civil engineering are reputed for stacking broken concrete blocks each having a natural stone-shaped surface, which is a popular construction method in which 8 to 10 concrete blocks are arranged per square meter. However, recently, due to construction costs and lack of workers, large broken concrete blocks were
There has been a desire for a construction method in which one or two concrete blocks are arranged per square meter.

[0003]

However, even if a large concrete block is molded by an immediate demolding method or a casting method, a concrete block having a width of more than 1 m may have irregularities on its surface, or its strength may vary depending on the packing density. When a large concrete block is broken by a pair of upper and lower breaking blades, a lot of defective products are generated. There was a problem that the concrete block was damaged depending on the strength of the initial pressing force against the height.

[0004] The present invention solves such a problem, and enables a large-sized concrete block for breaking, for example, having a width of 1.7 m and a height of 0.6 m, to be broken without causing defective products or breakage. It is an object of the present invention to provide an apparatus for breaking a concrete block.

[0005]

According to the present invention, there is provided a press girder horizontally fixed on an upper portion of a vertical side girder, a table hung from the side girder through a shock absorber, and into which a concrete block is carried. An upper blade holder suspended above the table from the press girder via a ram cylinder and a side ram cylinder having a smaller capacity than the ram cylinder, and arranged in a horizontal straight line downward from the upper blade holder. Many upper blades that can be individually raised and lowered,
An upper blade cylinder provided for each of the upper blades, for individually lowering the upper blade, a lower blade holder provided below the table opposite the upper blade holder, and a horizontal blade extending upward from the lower blade holder. A number of lower blades that are arranged in a straight line and can be individually raised and lowered, a lower blade cylinder provided for each lower blade and individually raising the lower blades, and a vertical straight line arranged on the side of the table upper surface. A plurality of side blades which can be individually advanced and retracted on the upper surface of the table, and side blade cylinders provided for each of the side blades to individually advance the side blades toward the table upper surface are provided. A concrete block breaking device, in which a concrete block is carried in by a conveyor (not shown) onto a table, the upper blade holder is lowered by a small-capacity side ram cylinder, and then the upper blades are individually lowered. Blade After the upper blade and the lower blade are brought into contact with the upper and lower surfaces of the concrete block by operating the lower blade cylinder that individually raises the lower blade and the lower blade, the ram cylinder and the side blade cylinder are simultaneously operated. Then, the large concrete block is efficiently broken without breaking.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a front view showing an embodiment of the present invention. Vertical side girder 2 is provided on the left and right sides of pedestal 1. The press girder 3 is horizontally fixed, and on the press girder 3 is installed a pressure oil tank 4 serving as a pressure oil source for supplying various cylinders including a ram cylinder described later.

The support beams 5 are provided on the side surfaces of the left and right side girders 2.
Is fixed, and a side frame 7 is suspended from the support beam 5 via a shock absorber 6. When the shock absorber 6 expands and contracts, the side frame 7 is displaced vertically along the side girder 2. It has become. A table 8 is fixed below the pair of left and right side frames 7.

FIG. 1 is a longitudinal sectional front view of a half cut in which a main part of FIG. 2 is enlarged, and FIG. 3 is an enlarged side view of FIG. 1 as viewed in a direction III. As shown in FIG. 3, a spring 11 (see FIG. 3) disposed at the center between the support plates 9 and 10 described below and a pair of springs disposed before and after the spring 11 between the support plates 9 and 10 will be described. Spring 1
2 and 12.

An upper end of a table mounting bolt 13 is supported by a support beam 5 fixed to the side surface of the side girder 2, and the table mounting bolt 13 gently penetrates the center of the support plate 9. The support plate 10 is suspended at the lower end through the center of the spring 11. The upper end of a spring adjustment bolt 14 is supported at both front and rear ends of the support plate 9 via a nut 15. The spring adjustment bolt 14 passes through the center of the spring 12 and gently penetrates the support plate 10. The above-described side frame 7 is suspended from the lower end of the adjustment bolt 14.

Table 8 loaded on side frame 7
Loads such as the spring adjustment bolt 14, the support plate 9, the springs 11 and 12, the support plate 1
0, the table mounting bolts 13 and the support beams 5 support the side girder 2 and the nut 15
By turning, the distance between the support plates 9 and 10 is changed, so that the buffering force of the buffer 6 can be adjusted.

As shown in FIG. 2, a ram cylinder 16 is mounted at the center on the lower side of the press girder 3, and side ram cylinders 17 having a smaller capacity than the ram cylinder 16 are mounted at positions on both sides thereof. And ram cylinder 1
6 and a lower end of the side ram cylinder 17, a horizontally long press plate 18 is attached. From the press plate 18, an upper blade holder 20 is provided between the tables 8, 8 shown in FIG. Is suspended just above the gap 21 that is provided.

As shown in FIG. 1 and FIG. 4, which is a cross-sectional view taken along the line IV-IV of FIG.
Upper cylinder block 22, Upper ground block 2
3. The upper head block 24 and the upper blade guide 25 are sequentially attached, and are integrally connected to the upper blade holder 20.

Between the upper blade guides 25, a number of downwardly directed upper blades 26 are arranged in a horizontal straight line so as to be individually vertically movable. The upper cylinder block 22 is provided with upper blade cylinders 27 corresponding to the respective upper blades 26, and the upper blade pistons 28 are fitted respectively. A piston rod 29 of the upper blade piston 28 slidably penetrates through the upper ground block 23, and a lower end of the piston rod 29 is connected to an upper end of the upper blade 26.

A spring 30 is provided on the upper blade piston 28.
Is provided to urge the upper blade piston 28 downward, and furthermore, a pressure oil passage 31 formed in the upper blade holder 20.
Is communicated with the upper end of the upper blade cylinder 27 so that pressure oil is supplied and discharged above the upper blade piston 28.

A lower blade holder 32 is fixed on the pedestal 1 so as to face the upper blade holder 20 below the gap 21 between the tables 8 and 8 (see FIG. 4).
A lower cylinder block 33, a lower ground block 34, a lower head block 35, and a lower blade guide 36 are sequentially stacked on each other, and are integrally connected to the lower blade holder 32.

Between the lower blade guides 36, a number of upwardly directed lower blades 37 are arranged in a horizontal straight line so as to face the upper blade 26 so as to be individually liftable. The lower cylinder block 33 is provided with a lower blade cylinder 38 corresponding to each lower blade 37, and a lower blade piston 39 is fitted therein. The piston rod 40 of the lower blade piston 39 slidably passes through the lower ground block 34, and the upper end of the piston rod 40 is connected to the lower end of the lower blade 37.

A spring 41 is provided below the lower blade piston 39.
Are provided to urge the lower blade piston 39 upward, and furthermore, a pressure oil passage 42 formed in the lower blade holder 32.
Communicates with the lower end of the lower blade cylinder 38 so that pressure oil is supplied and discharged below the lower blade piston 39.

As shown in FIG. 1 and FIG.
, A plurality of horizontal side blade cylinders 43 facing the inside of the side girder 2 are attached so as to be arranged vertically, and the tip of each piston rod 44 (see FIG. 1) is individually attached to the side. A blade 45 is attached. These side blades 45 are arranged in a vertical straight line as shown in FIG. 4, and when pressure oil is supplied to and discharged from the side blade cylinder 43 (see FIG. 1) to expand and contract the piston rod 44, the side blade 45 becomes The table 8 slides on the side blade guide 46 fixed to the side frame 7 to horizontally advance toward the upper surface of the table 8 and to retreat. Note that a stroke adjusting bolt 47 is attached to the side blade cylinder 43 as shown in FIGS.

Next, the operation of the above-described device will be described.

As shown in FIG. 2, the concrete block 48 to be broken is carried into the upper surface of the table 8 by a carry-in conveyor (not shown) in a direction perpendicular to the plane of FIG.

When the concrete block 48 has been carried into the upper surface of the table 8, the small-capacity side ram cylinder 1
7 to supply pressurized oil to lower the press plate 18 and the upper blade holder 20. At this time, the ram cylinder 16 is pulled by the press plate 18 without pressure and extends downward.

Subsequently, when pressure oil is supplied to the pressure oil passages 31 and 42 shown in FIGS. 1 and 4, the piston rod 29 of the upper blade piston 28 lowers a number of the upper blades 26 individually, and the piston rod of the lower blade piston 39 The rod 40 also raises many lower blades 37 individually. Therefore, even if the upper and lower surfaces of the concrete block 48 have irregularities, many upper blades 26 and lower blades 37
Each concrete block 48 is brought into a state of being substantially in close contact with the upper and lower surfaces according to the irregularities of the concrete block 48.

Next, the ram cylinder 16 having a large pressurizing capacity
When the pressurized oil is supplied to all the side blade cylinders 43 (see FIG. 1) at the same time as the pressurized oil is supplied to the concrete block 48 (see FIG. 2), all the upper blades 26 and the lower blades 37 are forced from above and below by a large force. At the same time as all the side blades 45
Also, the concrete block 48 is broken from both left and right sides.

At this time, the shock in the vertical direction applied to the table 8 is reduced by the shock absorber 6, so that even a large concrete block 48 does not cause defective products or breakage.
It becomes possible to break as a good product.

[0026]

According to the present invention, the upper blade, the lower blade, and the side blades are all in close contact with the upper and lower surfaces and side surfaces of the concrete block, and the concrete block can be broken at a stretch in that state. The impact in the vertical direction applied to the concrete can also be reduced, so that even large concrete blocks can be efficiently broken without causing defective products or breakage.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of a half cut, showing an enlarged main part of FIG. 2;

FIG. 2 is a front view showing an example of an embodiment of the present invention.

FIG. 3 is an enlarged side view of FIG. 1 as viewed from a direction III.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 1;

[Explanation of symbols]

 2 side girder 3 press girder 6 shock absorber 8 table 16 ram cylinder 17 side ram cylinder 20 upper blade holder 26 upper blade 27 upper blade cylinder 32 lower blade holder 37 lower blade 38 lower blade cylinder 43 side blade cylinder 45 side blade

Claims (1)

[Claims] 1. A press girder fixed horizontally above a vertical side girder, a table suspended from the side girder via a shock absorber, and a concrete block is carried in, a ram cylinder from the press girder and a ram cylinder. An upper blade holder suspended above the table via a side ram cylinder having a smaller capacity than the ram cylinder,
A number of upper blades arranged in a horizontal straight line downward from the upper blade holder and individually movable up and down, an upper blade cylinder provided for each of the upper blades and individually descending the upper blade, and the upper blade holder; A lower blade holder provided opposite the table below, a number of lower blades arranged in a horizontal straight line upward from the lower blade holder and individually movable up and down; A lower blade cylinder that individually raises the blades, a plurality of side blades that are arranged in a vertical straight line on the side of the table upper surface and that can individually advance and retreat on the upper surface of the table, A concrete block breaking device, comprising: a side blade cylinder that individually advances blades toward the table upper surface.