JPH10317414A - Bucket with cutter unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a bucket in which the discharge opening of a hopper is not easily blocked regardless of the bucket capacity and the size of the discharge opening of the hopper, by providing a cutter unit freely cutting excavated soil in the bucket in an arm of a working machine or the bucket or therebetween. SOLUTION: A bucket 2 is transferred to an excavating position by the actuation of an arm of a working machine and the arm and the bucket 2 are tilted to scoop excavated materials into the bucket 2. When the bucket 2 is further tilted to the maximum inclination, in this state, the vertical cutter edge 12 passes through the excavated materials in the bucket to cut them and also the horizontal cutter edge 13 passes through the excavated materials in the bucket along the rotary circle 14 of the bucket 2 to cut them. Accordingly, the excavated materials are not allowed to stick on the inside surface of the bucket and smoothly discharged from the discharge opening of the hopper. In this way, such a chance that the excavated materials stick to the inside wall of the hopper and pile up thereon and block the discharge opening is remarkably decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a bucket with a cutter unit.

[0002]

2. Description of the Related Art Construction machines include hydraulic excavators (so-called power shovels), wheel loaders, dozer shovels,
2. Description of the Related Art Some excavators and the like have a work machine arm that can be freely operated in vertical and horizontal directions, eccentricity, and the like, and a bucket that is rotatable vertically at its tip. Then, the ground (for example, clay, earth and sand, and rock) is excavated by operating the work machine arm and the bucket.

[0003]

However, there are the following problems in the construction or the like in which the excavated object is put into, for example, a hopper and transferred to the next process.

[0004] The hopper is tapered from the upper input port to the lower output port. Therefore, when the excavated material is made of clay, for example, even if the bucket capacity is smaller than the outlet of the hopper, the excavated material gradually adheres to the inner wall of the hopper, accumulates, and thus blocks the outlet. There is.

Further, it is necessary to remove deposits in the hopper which are closed by hand, which hinders improvement in production efficiency.

The present invention has been made in view of the above-mentioned problems of the prior art,
An object of the present invention is to provide a bucket in which the discharge port of the hopper is difficult to close (preferably, the discharge port of the hopper is hard to close regardless of the bucket capacity and the size of the discharge port of the hopper).

[0007]

In order to achieve the above object, the bucket is a bucket with a cutter unit. That is, the bucket with the cutter unit according to the first invention is rotatably provided at the tip of the working machine arm, and works with the cutter unit that allows the excavated material in the bucket to be cut freely in the bucket that excavates the excavated material freely. It is characterized in that it is provided between the machine arm, the bucket, or the work machine arm and the bucket.

According to the first aspect, the cutter unit is provided on the work implement arm, is provided on the bucket, or is provided between the work implement arm and the bucket to secure the cutting reaction force. Therefore, the cutter unit applies a cutting force based on the reaction force to the excavated object in the bucket, thereby cutting the excavated object in the bucket. That is, even if the excavated material in the bucket is clayey, the excavated material is already shredded. For this reason, the excavated matter is smoothly discharged from the discharge port of the hopper without giving a margin for adhering to the inner wall of the hopper. That is, the chance that the excavated matter adheres and accumulates on the inner wall of the hopper and closes the discharge port can be greatly reduced. In addition, conventionally, it is an essential condition that the bucket capacity is smaller than the diameter of the discharge port. However, according to the first aspect, the excavated material is shredded before being put into the hopper. Combination construction with a bucket can be performed with greater freedom. The excavated material does not need to be limited to clay, and the above-described effects can be similarly applied to soft materials such as sandstone.

According to a second aspect of the present invention, in the first aspect, the cutter unit has an actuator supported by the work implement arm and / or the bucket to enable the cutter unit to operate with its cutting edge directed into the bucket. I do.

The second invention limits the first invention, and the basic operation and effect are substantially the same as those of the first invention. The second invention is remarkably different from the first invention in that the first invention has a countermeasure even if the cutter unit is integrally fixed between the work machine arm, the bucket or the work machine arm and the bucket. On the other hand, since the force is obtained and the bucket is rotatable, the rotation of the bucket can cut the excavated material in the bucket by the cutter unit. On the other hand, in the second invention, the cutter unit is configured to be positively operable, and the degree of freedom of cutting is increased. It is not necessary to explain that the first invention includes the second invention.

According to a third aspect of the present invention, in the first or second aspect, the cutter unit includes a cutting edge having a side surface substantially coincident with a tangential direction of a rotating circle of the bucket.

According to the third aspect, the following operation and effect can be obtained. The ideal cutting edge in the cutter unit is one in which the side surface of the cutting edge follows the rotating circle of the bucket. However, not only such a cutting edge but also a cutting edge whose cutting surface does not follow the rotation circle of the bucket (in other words, a cutting edge having a side surface that does not coincide with a substantially tangential direction of the rotation circle of the bucket). Can be prepared. At this time, in the cutting edge having a side surface that does not substantially coincide with the tangential direction of the rotating circle of the bucket, when the bucket, the cutting edge or the bucket and the cutting edge are operated for cutting, the side surface of the cutting edge causes the excavated matter in the bucket to move inside the bucket. Even if the excavated material can be cut in the direction and the excavated material can be cut, there is a problem that it is difficult to discharge the excavated material from the bucket. Of course, the energy required for this suppression is also the loss energy. On the other hand, in a cutting edge having a side surface substantially coincident with the tangential direction of the rotating circle of the bucket, since the side surface of the cutting edge substantially coincides with the tangential direction of the rotating circle of the bucket, the pressing force hardly occurs. That is, the second invention is configured with expectation of this function and effect.

According to a fourth aspect of the present invention, in the first or second aspect, the cutter unit has a cutting edge having a side surface along an arc of a rotating circle of the bucket.

According to the fourth aspect, the following operation and effect can be obtained. In the third aspect, when the side width of the cutting edge is not too long, it can be considered that no suppression occurs at all. However, if the side surface width of the cutting edge is increased due to an increase in the strength of the cutting edge or the like, the rear of the side surface of the cutting edge becomes a side surface that does not substantially match the tangential direction of the rotating circle of the bucket. Driving force is generated. Therefore, in the fourth invention, the side surface of the cutting edge is formed along the arc of the rotating circle of the bucket, thereby completely eliminating the suppressing force.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described with reference to FIGS. In addition, in order to facilitate the description, the bucket with the cutter unit according to the embodiment will be sequentially described below separately for the cutter unit and the bucket.

The bucket is mounted on a hydraulic excavating machine (not shown), for example, and is provided at the tip of a working machine arm that can freely move vertically, horizontally, eccentrically, bend, and the like. That is, the hydraulic excavator has, for example, an upper revolving unit on a lower traveling unit, and a work implement arm on the upper revolving unit. The work machine arm has a first arm connected to the upper revolving structure with a pin at the base end thereof and can be raised and lowered by a first hydraulic cylinder, and a work end arm connected to the distal end of the first arm with a pin at the base end and can be raised and lowered by a second hydraulic cylinder. A second arm, and the bucket having a base end connected to a distal end of the second arm by a pin and rotatable by a third hydraulic cylinder. Accordingly, the hydraulic excavator excavates the ground by self-propelled by the lower traveling body, the upper revolving body swinging, the first and second arms (the above working machine arms) being raised and lowered, and the bucket rotating. Be free. FIG. 1 shows the above-described example machine.
FIG. 2 illustrates portions of a second arm 1, a bucket 2, and a third cylinder 5. FIG.

In FIG. 1 showing the first embodiment, only the arm 1 which is the tip of the working machine is shown, and the arm 1 is rotatably mounted on the tip of the arm 1 by a hydraulic cylinder 5 shown in FIG. A pin connected bucket 2 is shown.
That is, the arm 1 and the bucket 2 are operated, and the bucket 2 is tilted by extending the hydraulic syringe 5,
On the other hand, by shrinking the hydraulic cylinder 5, the bucket 2 is dumped so that excavated materials such as clay, earth and sand, and rocks can be excavated.

On the other hand, the cutter unit 10 is
1 and a plate-shaped vertical cutting edge 12 fixed to the support member 11 and extending in the rotation direction of the bucket 2, and a horizontal fixing edge fixed to the vertical cutting edge 12 at a position along a tangent to a rotating circle 14 when the bucket 2 is tilted. The cutting edge 13 is provided. When the bucket 2 tilts in the maximum tilt direction indicated by the imaginary line, the cutter unit 10
Are fixed to the lower surface 1a of the arm 1 so that the excavated material enters the bucket 2 and can cut the excavated material in the bucket 2.

According to the structure of the first embodiment, the work machine arm is operated to move the bucket 2 to the excavation position.
The excavated material is scooped into the bucket 2 by tilting the arm 1 and the bucket 2. In this state, when the bucket 2 is further tilted in the direction of the maximum tilt position indicated by the imaginary line, the vertical cutting edge 12 passes through the excavated material in the bucket 2 to cut the excavated material, and the horizontal cutting edge 13 Rotating circle 14
Along the excavated material in the bucket 2 to cut the excavated material. As described above, the excavated material in the bucket 2 is finely cut by the vertical cutting edge 12 and the horizontal cutting edge 13 of the cutter unit 10. At this time, the vertical cutting edge 1 of the cutter unit 10
2 is a flat plate along the rotation direction of the bucket 2, and
The horizontal cutting edge 13 is fixed at a position along a tangent to the rotating circle 14 when the bucket 2 is tilted. Therefore, when the vertical cutting edge 12 and the horizontal cutting edge 13 pass through the excavated material in the bucket 2 and cut, the force for holding the excavated material in the inner direction of the bucket can be reduced. Thereafter, if the arm 1 is tilted back to move the bucket 2 to a predetermined position and the bucket 2 is dumped, the excavated material in the bucket 2 that has been finely cut is finely cut. Is discharged.

Further, when the excavated material in the bucket is put into the entrance of the hopper and the excavated material discharged from the outlet of the hopper is sent to the next process such as soil improvement, if the excavated material is clayey, the hopper outlet is opened. Clogging gradually, but the excavated material such as clayey material put into the hopper is cut finely, so the hopper exit where the excavated material is clogged and does not fall is smaller, and the interval for cleaning the excavated material accumulated at the outlet of the hopper Can be extended.

A second embodiment of the present invention will be described with reference to FIG. The same members as those in the first embodiment are denoted by the same reference numerals, the description thereof will be omitted, and different portions will be described. The horizontal cutting edge 13a of the cutter unit 10 is
The side surface along the arc of the rotating circle 14 is a flat vertical edge 1
2, except that it is fixed to 2.

According to the configuration of the second embodiment, the horizontal cutting edge 13a
Is formed on the side surface along the arc of the rotating circle 14 when the bucket 2 is tilted, so that when the horizontal cutting edge 13a cuts through the excavated material in the bucket 2, the excavated material is inserted into the bucket. The force for holding down in the direction can be reduced. As described above, when the side surface of the horizontal cutting edge 13a is long along the arc of the rotating circle 14 when the bucket 2 is tilted, the linear cutting edge 1 shown in the first embodiment is used.
It is effective to use in place of 3.

A third embodiment of the present invention will be described with reference to FIG. The same members as those in the first embodiment are denoted by the same reference numerals, the description thereof will be omitted, and different portions will be described. At the tip of the arm 1, a bucket 2 is provided rotatably around a rotation shaft 3. A link mechanism 4 connected to the pin hole 2a of the bucket 2 and the pin hole 1b of the arm 1,
A bucket cylinder 5 is mounted on the arm 1.
As in the first and second embodiments, the vertical cutting edge 12 and the horizontal cutting edge 13 (1
3a) Support member 11a supporting (not shown)
Are rotatably provided around the rotation axis 3 of the bucket 2. A cutter cylinder (actuator) 6 that allows the vertical cutting edge 12 and the horizontal cutting edge 13 (13a) of the cutter unit 10 to be operable toward the inside of the bucket 2 is provided between the support member 11a and the arm 1.

According to the configuration of the third embodiment, the vertical cutting edge 12 and the horizontal cutting edge 13 (13a) of the cutter unit 10 are operated toward the inside of the bucket 2 by the cutter cylinder 6.
Therefore, by operating the bucket cylinder 5 and the cutter cylinder 6, the bucket 2 and the cutter unit 10 can be rotated to a predetermined rotation position, and the excavated material in the bucket 2 can be cut. Thus, bucket 2
If the excavated material in the bucket 2 is cut, the excavated material in the bucket 2 that has been finely cut can be easily discharged from the bucket 2 simply by dumping the bucket 2 without tilting the arm 1 back.

A fourth embodiment of the present invention will be described with reference to FIG. The same members as those in the first to third embodiments are denoted by the same reference numerals, the description thereof will be omitted, and different parts will be described. At the tip of the arm 1, a bucket 2 and a support member 11 a of the cutter unit 10 are mounted so as to be rotatable around the rotation axis 3. A first link 21 is pin-connected to a pin hole 2a of the bucket 2 and a pin hole 25a at the other end of the hydraulic cylinder 25 having one end connected to the arm 1 by a pin. Also, the pin hole 25a of the hydraulic cylinder 25 and the arm 1
The second link 22 is pin-connected to the pin hole 1b. Further, a third link 23 is pin-connected to the pin hole 22a of the second link 22 and the pin hole 11b of the support member 11a.

According to the configuration of the fourth embodiment, when the hydraulic cylinder 25 is extended in the direction of arrow A, the bucket 2 rotates from the position indicated by the solid line to the position indicated by the imaginary line, and the cutter unit 10 is also moved from the position indicated by the solid line. Rotate to the position of the virtual line. Thus, the bucket 2 and the cutter unit 1
When 0 rotates to the position of the imaginary line, the excavated material in the bucket 2 is cut by the cutter unit 10. When the hydraulic cylinder 25 contracts in the direction of arrow B, the bucket 2
Rotates from the position of the imaginary line toward the position of the solid line, and the support member 11 also rotates from the position of the imaginary line toward the position of the solid line, so that the excavated material in the bucket 2 is discharged. That is, the hydraulic cylinder 25 includes the bucket 2 and the cutter unit 1.
And 0 can be rotated simultaneously.

In the first to fourth embodiments, the cutter unit 10 is installed on the arm 1, but any member that can obtain the reaction force of cutting the excavated material in the bucket 2 can be used.
It may be installed between the bucket 2 or the arm 1 and the bucket 2 or the like. Further, the support member 11 is provided with the two cutting edges 12, 13; however, either one of the two cutting edges 12, 13 may be provided, or a plurality of cutting edges may be provided. Further, an extruding device for discharging the clay excavated matter clogged between the two cutting edges 12 and 13 out of the bucket 2 may be provided.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of a bucket with a cutter unit according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a side view showing a second embodiment of a bucket with a cutter unit according to the present invention.

FIG. 4 is a side view showing a third embodiment of a bucket with a cutter unit according to the present invention.

FIG. 5 is a side view showing a bucket with a cutter unit according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Arm 2 Bucket 3 Rotation axis 5 Bucket cylinder 6 Cutter cylinder 10 Cutter unit 11, 11a Support member 12 Vertical cutting edge 13, 13a Horizontal cutting edge 14 Rotating circle 25 Hydraulic cylinder 21 First link 22 Second link 23 Third link

Claims (4)

[Claims] 1. A bucket which is rotatably provided at a tip of a working machine arm and freely digs a digging object, comprises a cutter unit capable of cutting the digging object in the bucket, the working machine arm, the bucket, or the working machine arm. A bucket with a cutter unit, which is provided between the bucket and the bucket. 2. The bucket with the cutter unit according to claim 1, wherein the cutter unit has an actuator supported by the work implement arm and / or the bucket to enable the cutting edge of the cutter unit to be directed into the bucket. Bucket with cutter unit. 3. The bucket with a cutter unit according to claim 1, wherein the cutter unit has a cutting edge having a side surface substantially coincident with a tangential direction of a rotating circle of the bucket. 4. The bucket with a cutter unit according to claim 1, wherein the cutter unit has a cutting edge having a side surface along an arc of a rotating circle of the bucket.