JPH10168927A - Civil engineering machine provided with crushing device for concrete block and other disposal block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability by providing a pair of crushing teeth plates that rotate reversely to each other and a block scattering-prevention plate in the bucket of a civil engineering machine. SOLUTION: In a bucket 1 attached to the manipulating arm 3 of a civil engineering machine, a pair of rotating shafts 4, 5 are so supported that they can rotate adversely each other via teeth wheels, a hydraulic motor, and the like. For example, a plural sheets of crushing teeth plates 12, 13 with crushing teeth such as angular teeth 16 and acute angle thrusting teeth 17 provided radially projectingly at some places are secured to the shafts 4, 5. Then, the shafts 4, 5 are rotated inwardly each other to thereby concrete blocks (k) are broken by the teeth plate 12, 13 and crushed matters are ejected from the falling port 19 at the bottom of the bucket 1. In addition, a jumping up prevention plate 20 for concrete blocks (k) being crushed is pivoted at the upper part of the bucket to be freely opened and closed by an operation arm 3 and connection rod 22. In this way, disposal blocks scooped up by the bucket can be disposed safe as it is.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a civil engineering work with a waste lump crushing apparatus which is capable of easily crushing concrete lump mixed with rebar waste and other lump lumps generated from the demolition site of a building and efficiently treating the lump. It concerns machines.

[0002]

SUMMARY OF THE INVENTION An object of the present invention is to easily and quickly treat a waste lump using a civil engineering machine that can be freely operated by a single driver.

[0003]

According to the present invention, there are provided a plurality of sets of rotary shafts provided in a bucket at the tip of an operating arm of a civil engineering machine, having a pair of rotating shafts rotating in opposite directions, and having several crushing teeth protruding radially. A crushing tooth plate is inserted into the rotating shaft, and a presser plate for preventing flying of aggregates when the crushing teeth of both rotating shafts are rotated is pivotally attached to the bucket in an openable and closable manner.

[0004]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. Reference numeral 1 denotes a bucket, which is attached to the tip of the operation arm 3 of the civil engineering machine 2. A pair of right and left rotating shafts 4 and 5 are supported in the bucket 1, and spur gears 6, 6 and 7 and 7 shown in FIG. Hydraulic motor 10, 1
1 and rotate in opposite directions. Rotary axis 4
A plurality of crushing tooth plates 12 are fixed to the
3 is fixed in the same number. The crushing tooth plate 14 of the illustrated embodiment forms a recess 15 between the three arc-shaped crushing teeth 14, and the crushing tooth plate 12 of the rotating shaft 4 is crushed by the crushing tooth plate 1 of the other rotating shaft.
3 is shown as opposed to the recess 15, but the spacing between the rotating shafts 4 and 5 is changed, or a small crushed tooth is attached to the tooth plate to prevent the teeth from entering the recess 15. Sometimes they are used. The crushing teeth 14 of the crushing tooth plates 12 and 13
A square tooth 16 is formed at one end and a sharp cutting blade 17 is provided at the other end. When the rotating shafts 4 and 5 rotate inward each other (see FIG. 4), the square teeth 16 and 1 of the crushing tooth plates 12 and 13 are rotated.
The concrete mass K is destroyed in 6 and the finely crushed mass is discharged to the outside through a drop port 19 provided at the bottom of the bucket 1. When the rotary shafts 4 and 5 are turned outwardly as shown in FIG. 5, the large concrete mass K hits the outer peripheral surface of the bucket and is stabbed and broken by the sharp piercing blade 17, and the small mass K is divided into two crushed tooth plates. It is guided between 12 and 13 and crushed by the sharp piercing blade 17. In the present invention, in order to prevent the concrete mass K from flying up at this time, the holding plate 20 is connected to the shaft 2.
1, the operation arm 3 and the holding plate 20 are connected via the connecting rod 22 so as to be openable and closable above the bucket 1, and the operation arm 3 is moved to open and close the holding plate 20, thereby continuing the crushing operation smoothly. It is like that. Various ideas for operating the holding plate 20 are conceivable as shown in FIG. FIG. 5 (I) shows that a ridge 30 is protruded from the outer surface of the holding plate 20, and the ridge 30 is pressed by the base of the operating arm 3 to be pressed down.
Normally, the presser plate 20 is urged upward by a spring 31. FIG. 5 (II) shows that a hydraulic cylinder 33 is interposed between the bucket 1 and the presser plate 20 to utilize hydraulic pressure. The holding plate 20 is moved. 5 (III), the holding plate 20 is pivotally attached to the base of the operating arm 3 with the pin 35, and the holding plate 2
FIG. 2 shows a state in which the receiving tool 36 integrated with the reference numeral 0 contacts the operation arm 3 to operate the presser plate 20 with the operation arm 3. Further (IV)
Attaches the holding plate 20 to the base of the bucket 1 with a pin 38. The pin 38 is connected to a middle rod 40 connected to the tip of the hydraulic cylinder 36 by a pin 37 via a connecting rod 39 with the pin 37, and the pins 37, 38 are supported. The holding plate 20 opens and closes.

[0005]

According to the present invention, as described above, a concrete lump or the like obtained by scooping up a lump of concrete or other waste lump in the bucket 1 is crushed into fine pieces and can be processed as it is. In particular, the holding plate can prevent the lump of lumps from jumping up and crush the concrete lump without difficulty.

[Brief description of the drawings]

FIG. 1 is a perspective view.

FIG. 2 is a vertical side view.

FIG. 3 is a plan view of the same.

FIG. 4 is a diagram showing a crushed state of concrete lumps when a pair of rotating shafts are rotated inward each other.

FIG. 5 is a diagram showing an example of an operation structure of a holding plate.

[Explanation of symbols]

 Reference Signs List 1 bucket 2 civil engineering machine 3 operating arm 4, 5 rotating shaft 6, 7 spur gear 10, 11 hydraulic motor 12, 13 crushing tooth plate 14 crushing tooth 15 concave notch 16 square tooth 17 sharp piercing blade 19 drop opening 20 holding plate

Claims (1)

[Claims] 1. A crushing tooth plate in which a pair of rotating shafts which rotate in opposite directions in synchronization with each other are provided oppositely in a bucket attached to the tip of an operation arm of a civil engineering machine, and crushing teeth are projected radially at several places. An earth-moving machine with a crushing device for concrete blocks and other waste blocks that has a presser plate mounted on a bucket so that it can be opened and closed.