JPH1176845A - Method of crushing concrete block and concrete block crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively crush a large sized concrete block to a size capable of being nibbled by a small-sized nibbler. SOLUTION: In this crusher, height of a load receiver board 1 is adjusted by a hydraulic lift jack and concrete blocks B conveyed by a transfer means T such as damp track or the like are directly drawn or pushed near by a hydraulic slide jack 2 so as to be loaded. One of hydraulic crusher jacks 3 having claws provided on tip ends formed in a plurality of steps in a vertical direction above the load receiver board 1 is operated and the concrete blocks are crushed repeatedly and sequentially from a top side and from an end side so that the concrete blocks are crushed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block crushing method and a crusher for efficiently crushing a large number of large concrete blocks generated at a civil engineering site or the like to a size that can be subdivided by a small nibble.

[0002]

2. Description of the Related Art As a conventional crushing method, a hydraulic breaker, a concrete crusher (nibble), and a static crushed material using a chemical material are known.

The advantages of a hydraulic breaker are that there is no restriction on the size of the block and that the breaker can be crushed in a relatively short time. Disadvantages are high noise / vibration, labor for sorting rebar, and relatively large site is required because the machine moves around.

The advantages of a concrete crusher are noise and vibration-free. The disadvantage is that the width is 70 for general-purpose machines.
cm or more cannot be crushed, labor is required to sort the rebar, and a relatively large site is required because the machine moves around.

[0005] The characteristics of the static crushing material are noise-free and vibration-free, crushable even in a narrow place, and the size of the block is not limited. Disadvantages are that it takes a long time to crush, and the work of cutting the reinforcing bar is necessary.

[0006]

As described above, as described above, there is no noise and any size (width 1 to 1.6 m, height 1.2 to 1 .2).
A concrete block (6 m, 2-3 m in length) could be crushed, and there was no method of effectively crushing without using labor for sorting reinforcing bars.

Accordingly, an object of the present invention is to provide a concrete block crushing method and a crusher capable of meeting the above demand.

[0008]

According to the present invention, the height of the loading tray is adjusted by a hydraulic lifting jack, and the concrete block transported by a transporting body such as a dump truck is directly transferred to the loading tray. The concrete block is pulled up or pushed in by a hydraulic slide jack, and one of the hydraulic crushing jacks provided with a plurality of vertically arranged claws at the top and bottom is operated above the load receiving table to move the concrete block from above. The crushing is repeated in order and from the end to crush the concrete block.

[0009] Since the crushing is performed by the hydraulic crushing jack, the crushing can be performed without noise and without vibration. By arbitrarily changing the arrangement of the crushing jack, the crushing can be performed regardless of the size of the concrete block.

[0010] In addition, when the claws at the tip of the crushing jack push the rebar, the adhesion between the rebar and the concrete is removed, and the work of sorting the rebar after crushing can be easily performed.

Further, concrete blocks conveyed by a carrier such as a dump truck are directly pulled or pushed into a load receiving table and placed thereon, so that a crane for unloading is not required. By laterally moving and crushing sequentially, crushing can be performed in a relatively narrow place.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1 to FIG. 4, a crusher is roughly divided into a load receiving table 1 whose height is adjusted by a hydraulic lifting jack, and a concrete block conveyed by a conveyer such as a dump truck. It comprises a hydraulic slide jack 2 to be pulled or pushed into the load receiving table 1 and a hydraulic crushing jack 3 provided with a plurality of vertically extending claws at the top of the load receiving table 1.

In the illustrated example, the load receiving table 1 is formed of a roller conveyor, and its frame is raised and lowered by six hydraulic lifting jacks 4 to adjust the height.

Although it supports an uneven load, six jacks 4
If there is a head difference, adjust the jack individually with the changeover switch.

The concrete block (RC beam) B mounted on the dump truck T is directly mounted on the roller conveyor 1 as a load receiving table using the hydraulic slide jack 2.
Slide jack 2 is provided on each side of roller conveyor 1
Is provided.

When pulling the concrete block B, as shown in FIG. 8, the nylon sling 8 is hung on the block B, and the block B is moved in the direction of the arrow by jack operation. In FIG. 8, 9 indicates a wire, 10 indicates a shackle, and 11 indicates a pushing fitting.

When the concrete block B is to be pushed in, the pushing block 11 is directly applied to the concrete block B. Since nine pin holes are provided at a pitch of 500 m / m on the conveyor frame, the slide jack 2 is positioned and fixed, and after the block is moved, the jacks are sequentially changed.

The hydraulic crushing jack 3 is provided above the load receiving table 1 in three stages, upper, middle and lower, in the illustrated example, and has a claw 3A at the tip as shown in FIGS. ing. In FIG. 2, 5 is a hydraulic unit for a crushing jack,
Reference numeral 6 denotes a crushing jack operating valve, and reference numeral 7 denotes a lifting jack hydraulic unit.

The operation is performed by a manual valve. A switching valve for pushing and pulling and a stop valve for three pairs of jacks are provided.

For example, when operating a pair of crushing jacks on the lower stage, the stop valves for the upper and middle stages are closed and operated by the switching valve.

The crushing procedure of the concrete block (RC beam) B is, as shown in FIGS. 9 and 10, a claw 3A of the crushing jack 3 at the upper end and the end of the concrete block B as close as possible to the free surface indicated by the arrow. Hit and crush.

The crushing is interrupted when the blade bites into the inside of the reinforcing bar t, and the crushing surface is replaced by the next one. The crushing is repeated in order from the top and sequentially from the end.

[0023]

As described above, according to the present invention, the following excellent effects can be obtained. (1) Since it is crushed with a hydraulic crushing jack, it can be crushed without noise and vibration. (2) By arbitrarily changing the arrangement of the crushing jack,
It can be crushed regardless of the size of the concrete block. (3) The concrete block mounted on the dump truck is directly pulled from the carrier by the lever block and is mounted on the crusher, so that a crane for unloading is not required. (4) When the nail at the tip of the crushing jack pushes the reinforcing bar, the reinforcing bar and the concrete can be adhered to each other, and the sorting operation of the reinforcing bar after the crushing can be easily performed. (5) The crusher can be crushed in a relatively small place by moving the block laterally and crushing sequentially at the fixed position.

[Brief description of the drawings]

FIG. 1 is a side view of a crusher.

FIG. 2 is a plan view of the crusher.

FIG. 3 is a front view of the crusher.

FIG. 4 is a rear view of the crusher.

FIG. 5 is a plan view of a claw at the tip of a crushing jack.

FIG. 6 is a side view of a claw at the tip of a crushing jack.

FIG. 7 is a front view of a claw at the tip of a crushing jack.

FIG. 8 is a plan view showing an embodiment in which a concrete block is directly placed on a loading tray from a dump truck.

FIG. 9 is a front view showing one embodiment of a concrete block crushing procedure.

FIG. 10 is a front view showing another embodiment of the concrete block crushing procedure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Roller conveyor which is a loading stand 2 ... Slide jack 3 ... Crushing jack 4 ... Elevating jack 5 ... Hydraulic unit for crushing jack 6 ... Operating valve for crushing jack 7 ... Hydraulic unit for lifting jack 8 ... Nylon sling 9 ... Wire 10 ... Shackle 11 ... Push fitting

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toyohira Oshima 1-3-15 Awaza, Nishi-ku, Osaka-shi, Osaka Kashima Construction Co., Ltd. Kansai Branch

Claims (2)

[Claims] 1. The height of a loading stand is adjusted by a hydraulic lifting jack, and a concrete block conveyed by a carrier such as a dump truck is directly pulled or pushed by a hydraulic slide jack on the loading stand. Activate one of the hydraulic crushing jacks with claws at the tip provided in a plurality of stages in the vertical direction above the loading tray to crush concrete blocks in order from the top and from the end. A concrete block crushing method characterized by repeating. 2. A load receiving table whose height is adjusted by a hydraulic lifting jack, and a hydraulic slide jack that directly pulls or pushes a concrete block conveyed by a conveying body such as a dump truck onto the load receiving table.
A concrete block crushing machine, comprising: a hydraulic crushing jack provided with a plurality of stages in a vertical direction above a lift table.