JPH02274415A - Interexchangeable shearing bucket - Google Patents

Abstract

PURPOSE: To eliminate an auxiliary hydraulic device so as to facilitate the replacement of a shearing bucket by installing the fixing arm of the shearing bucket detachably to a swing arm through two shafts to which a standard bucket is installed and joining a movable arm to the end part of a bar of a hydraulic jack. CONSTITUTION: A hydraulic shovel is provided with a swing arm 2 controlled by a hydraulic jack, and a standard bucket 4 joined about a shaft 5 of the swing arm 2 is driven by an oscillating lever 6 joined to a shaft 7 and an end part 8 of a bar of the hydraulic jack 9. A fixing arm 10 of a shearing bucket 11 is installed to the swing arm 2 through the shafts 5 and 7 inserted into the holes at the rear part of the fixing arm 10, and the front part of the fixing arm is provided with a shearing blade 13 and a holding tooth 14 which are formed detachably on a shearing jaw. A movable arm is joined to the jack 9 through the shaft 8 at the rear end, provided with a shearing blade 16 and a holding tooth 17 which is detachably formed on a jaw opposed to the arm 10, and the replacement of buckets 4 and 11 is performed by the removal of three shafts 5, 7, and 8.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to interchangeable buckets, and more particularly to shear buckets that replace interchangeable buckets that can be controlled similarly to standard buckets.

BACKGROUND OF THE INVENTION A shear bucket is a cutter that is used as an alternative to standard or conventional buckets for shearing bars, beams, and concrete beams.

The existing shear bucket is a particular relatively complex design consisting of a hydraulic system with its own jack to control it.

The object of the invention is to directly replace conventional buckets and be similarly controlled without any new or auxiliary hydraulic control system.

(Means for Solving the Problem) To this end, the present invention provides a hydraulic shovel or a similar surface jib (
jib) which is operated by a swinging lever connected to a first axis at the end of the swing arm of the swing arm and connected to a second axis at the end of said swing arm. ,
a fixed arm that is attached to a device driven by a hydraulic jack and that is detachably attached to the swing arm with two shafts for attaching the standard bucket;
a movable arm tethered to a fixed arm having a rear extension capable of being tethered onto the end of a rod of said bucket control jack, said fixed and movable arms having opposing shearing blades having suitable shearing blades; Define the chin.

(Operation) The shear bucket is particularly simple in design. The reason is that the bucket consists of two arms attached to the end of the shovel's jib, similar to a standard bucket, and the shearing action is controlled by the detached bucket without any auxiliary hydraulic equipment. This is because Jack will test him directly.

Moreover, the exchange between a standard bucket and a shearing bucket according to the invention takes place quickly, within a few minutes, without any special effort, without any action on the hydraulic circuit of the shovel, and without connecting any circuits. It will be held in

DESCRIPTION OF THE PREFERRED EMBODIMENTS The hydraulic shovel diagrammed in FIG. 1 consists of a jib 1 having a swing arm 2 at its end which is controlled by a hydraulic jack 3.

The swing arm 2 itself has a standard bucket 4 connected about a first axis 5 to the end of said swing arm 2.

The bucket 4 is driven by a swing lever 6 connected to both the bucket and the swing arm 2 by a second shaft 7. A swing lever 6 is connected at 8 (FIG. 3) to the rod end of a hydraulic jack 9 which controls the bucket supported by the swing arm 2.

The shearing bucket of the present invention (FIGS. 2 and 4) consists of a movable arm 11 connected to a fixed arm 10 at an axis indicated by fixed arms 10 and 12, which is quickly tested by a swinging arm 2, and a jack 9. It is formed by a pair of jaws defined by one controlled by a rod.

The fixed arm 10 is mounted on the swing arm 2 by the same means as the standard bucket 4. For this purpose, the bucket axes 5 and 7 are engaged in holes formed at appropriate locations in the rear part of the fixed arm.

The front part of the fixed arm is formed as a shearing jaw and is provided with a low, preferably removable, shearing blade 16 and a retaining tooth 14.

The movable arm 11 has the same axis 8 as the standard bucket 4 at its rear end.
It has an extension that is connected to the rod of the jack 9.

The front end of the movable arm 11 is formed as a jaw opposite the arm 10 and is also provided with an upper, preferably removable shearing blade 16 and a retaining tooth 17.

The shear bucket is shown in FIG. 4 in its maximum open position and in its fully closed position under the control of the jaws in FIG. 2 (movable arm 11).

Exchange between the standard bucket 4 and the shear bucket is done using three shafts 5.7.
8 is removed and the standard bucket is changed.

The shape of the arms io, il was specifically studied to absorb high forces without damaging or modifying the shovel equipment (jib and swing arm).

The shape of the blades 13, 16 is designed to obtain the best results when cutting not only concrete but also steel.

In particular, the upper blade 16 has two parts, a front part and a rear part, forming an angle of about 30 DEG between them.

Finally, the invention is obviously not limited only to the embodiment shown and described in detail, but is particularly open to variations as far as the shapes and dimensions of the fixed arm 10 and the movable arm 11 are concerned. The arms 10,11 can not only be placed on each side of the connecting shaft 12 as shown, but also intersect like a pair of scissors, the shear bucket being closed in this case by maximum retraction of the rod of the jack 9.

Furthermore, instead of a shearing blade with a single jaw as shown, it could be double, either upper or lower, and the other jaws, single as well, could be formed between the two parallel parts of the double jaw. It is also possible to step between the gaps.

[Brief explanation of drawings]

1 is an exploded side view of a hydraulic shovel equipped with a standard bucket; FIG. 2 is a similar exploded side view of a bucket equipped with a shearing bucket according to the invention in place of the standard bucket; and FIG. 3 is an exploded side view of a hydraulic shovel equipped with a standard bucket. An enlarged view of the end of the swing arm, Figure 4 is the second
FIG. 2 is an enlarged view of the end of the swing arm of the shovel shown; 2...Arm, 3...Jack, 4...Bucket,
5.7...Shaft, 6...Lever, 9...Jack,
10-12...Arm, 14.17...Teeth, 16.
··blade. Spontaneous procedural amendment April 5, 1990 1. Indication of the case 1990 Patent Application No. 45354 2. Name of the invention Interchangeable shearing bucket 3. Person making the amendment Relationship with the case Applicant address France, F. -33370, Trades, The.
Do, Trades, Merak (no street address) Name Ameriki, Societe, Anonym 4, Agent Ginza Building (561-), 3-3-12 Ginza, Chuo-ku, Tokyo
0274,538G) FICl-4-

Claims (1)

Claims: 1. An interchangeable shear bucket for mounting on a standard bucket of the type connected at a first axis at the end of the swing arm of a hydraulic shovel or similar jib, the swing arm actuated by a swing lever connected to a second shaft at the end of the shear bucket and driven by a hydraulic jack, the shear bucket being mounted on the swing arm by two shafts for mounting standard buckets. The fixed arm and the movable arm are formed of a removably mounted fixed arm and a movable arm having a rear extension connected to the fixed arm and connected to the end of the rod of said jack controlling the bucket. defines two opposed shearing jaws having suitable cutting blades. 2. The shearing bucket according to claim 1, wherein the two shearing jaws on both arms are single. 3. The shearing bucket according to claim 2, wherein one of the two shearing jaws of the arm is double. 4. A shear bucket according to any one of claims 1 to 3, characterized in that two arms are located on each side of the connecting shaft. 5. The shearing bucket according to any one of claims 1 to 4, wherein the two arms intersect like a pair of scissors. 6. Any one of claims 1 to 5, wherein the jaw supports a removable blade having retaining teeth, one of the blades having two parts forming an angle therebetween. Shear buckets as described in Section.