JPH1037227A - Crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the efficiency of discharge by juxtaposing three rotation axial centers with a plurality of crushing tooth plates so as to form a triangle while being oppositely faced to a bottom-section discharge space and crushing excavated concrete lumps, etc., in a bucket. SOLUTION: Shafts 5, 6 with crushing tooth plates 7, 8 are installed in parallel to the upper section of a bottom-section discharge space 4 in a bucket 3 mounted at the front end of a whirling arm for a civil engineering machine. A shaft 9 with crushing tooth plates 10 larger than the crushing tooth plates 7 and 8 is set up in parallel with the shafts 5 and 6 on the shafts 5, 6. Excavated concrete lumps K are crushed coarsely by clearances 11 among a guide wall 12 and the tooth plates 10, smashed finely by the crushing tool plates 7, 8 at lower stages, and discharged from the discharge space 4. Accordingly, the efficiency of crushing is improved, and discharge can be conduced smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher in which a scooping device such as a shovel or a bucket attached to a swing arm of a civil engineering machine has a function of crushing concrete lumps generated when a building is dismantled.

[0002]

SUMMARY OF THE INVENTION An object of the present invention is to provide a crusher for efficiently crushing concrete lumps in a scooping device using a crushing tooth plate.

[0003]

The means of the present invention are as follows. Excavator to be attached to the tip of the swivel arm of the civil engineering machine,
A scooping device such as a bucket is provided with a pair of rotating shafts having a plurality of crushing tooth plates attached at required intervals facing a bottom discharge space thereof, and one rotating shaft is provided above an intermediate position between both rotating shafts. Equipped with a rotating shaft with a crushing tooth plate that can rotate or rotate and swing left and right,
A crusher in which a guide wall for crushing concrete lumps and the like together with the tooth plate is provided on the inner surface of the scooping device facing the tooth tip of each crushing tooth plate.

[0004]

The concrete mass K which has entered the bucket 3 is first broken by the rotation of the plurality of crushing tooth plates 10 provided on the upper rotating shaft 9 and the guide wall 12 on the inner surface of the bucket, and falls below it. Below, a pair of rotating shafts 5 and 6 rotate and wait for the concrete mass K which is crushed and falls, and crushes between the crushing tooth plates 7 and 8 of both rotating shafts 5 and 6.
It is clear that by crushing between the guide wall 8 and the guide wall 12, the crushing is efficient, and the crushing falls from the discharge space 4.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the concrete example shown in FIGS. 1 to 3, a pair of rotary shafts 5, 6 are mounted in parallel on a bucket 3 mounted on a turning arm 2 of a civil engineering machine 1 above a discharge space 4. A plurality of crushing tooth plates 7 and 8 are fixed to both rotating shafts at a required interval. The shape of the teeth can be variously considered and is appropriately selected. Also, one rotating shaft 9 is mounted above the rotating shafts 5 and 6,
Similarly, a plurality of fractured tooth plates 10 are fixed. It is desirable that the crushing tooth plate 10 be larger than the lower crushing tooth plates 7 and 8. A guide wall 12 is provided on the inner surface of the bucket 3 with a crushing gap 11 opposed to each of the rotating shafts 9, 5 and 6. Each of the rotating shafts 9, 5 and 6 is provided with a hydraulic motor 13. Next, in the example shown in FIG. 4, the upper rotating shaft 9 is supported by a swing lever 15 so as to be displaceable right and left, and the bucket is adjusted by adjusting the interval between the guide wall 12 and the rotating shaft 9 having the crushing tooth plate 10. 3 can correspond to the size of the lump K. 2
Reference numeral 0 denotes a hydraulic cylinder that moves the swing lever 15.

[0006]

According to the present invention, concrete lumps are first crushed by rotating the upper rotating shaft 9 to crush the tooth plate 10 and the guide wall 1.
The crushed material is crushed between the two tooth plates and the space between each tooth plate and the guide wall 12 with the rotation of the crushing tooth plates 7 and 8 of the pair of rotating shafts 5 and 6 thereunder. K is bucket 3
In the inside, the operation of being hurt several times is repeated, and finally, it is broken down into small pieces, and the crushing efficiency is extremely good.

[Brief description of the drawings]

FIG. 1 is a side view.

FIG. 2 is a longitudinal sectional side view of a main part.

FIG. 3 is a plan view.

FIG. 4 is a longitudinal side view showing another specific example.

FIG. 5 is a view showing the shape of teeth of a tooth replacement tooth plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Civil engineering machine 2 Revolving arm 3 Bucket 4 Discharge space 5, 6 Rotating shaft 7, 8 Crushing tooth plate 9 Rotating shaft 10 Crushing tooth plate 11 Crushing gap 12 Guide wall 13 Hydraulic motor 15 Rocking lever K Concrete block

Claims (1)

[Claims] 1. A pair of rotating shafts having a plurality of crushing tooth plates attached at required intervals facing a bottom discharge space thereof, in parallel with a scooping device such as a shovel or a bucket attached to a tip of a turning arm of a civil engineering machine. In addition, a single rotating shaft with a crushing tooth plate is provided above the intermediate position between the two rotating shafts so as to be rotatable or rotatable and swingable left and right. A crusher equipped with a guide wall that crushes the product together with the tooth plate.