JP3430362B2 - Attachment for movable arm of excavator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment for a movable arm of a power shovel, which is attached to the tip of the arm of the power shovel.

[0002]

2. Description of the Related Art In order to treat industrial waste such as tree roots and construction waste wood, it is preferable to incinerate in an incinerator. However, many of them are so large that they need to be finely crushed once before they can be put into an incinerator, but conventionally, there was no means for easily crushing the roots of trees, etc. At present, they are left unclean or landfilled at industrial waste treatment plants.

In construction work, large natural stones, concrete pieces, etc. may be grasped and carried by a fork device attached to the tip of a movable arm of a power shovel. The swing angle with respect to the movable arm was small and workability was poor. Further, although a fork device may perform dismantling work of a house or the like, a conventional fork device cannot cut a steel frame or the like of the house, and thus cannot perform an efficient dismantling work.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and easily and quickly grips or crushes large industrial wastes such as tree roots and construction waste wood. It is also an object of the present invention to provide an attachment for a movable arm of a power shovel, which can be swung, and which has a large swinging angle with respect to the arm and can easily cut a steel frame or the like.

[0005]

According to the present invention, the above problems can be solved as follows. (1) the挾圧members before and after a pair of pivotally mounted to the distal end portion of the movable arm, respectively, a separate rotating means operate independently from each other is mounted on the movable arm, linked so as to be opened and closed and, with both挾圧member and so as to strongly pressed the object to be grasped, a attachment attached to the leading end of the movable arm of a power shovel, one挾圧member
Is composed of a pair of left and right side pieces, and both sides
The tip ends of the pieces are joined together by a lateral connecting member,
A blade with a crescent side profile on one edge of the pressure member
The other compression member that has been installed passes inside the connecting member.
So that the two pressure members can rotate
Object to be crushed by moving both moving members by moving it
Can be bent and crushed at the contact part with the blade part.
The sea urchin.

(2) In the above item (1), the connecting member is
A notch is provided for the tip of the other compression member to pass through.
It

(3) In the above item (1) or (2), the side
The inner surface of the piece is connected to the side piece through a plurality of spacers.
Fix the reinforcing plate of the same shape.

(4) In any one of the above items (1) to (3) , an intermediate joint is provided near the tip of the compressing member and the movable arm.
Folding consisting of two links whose parts are linked to rotation means
Both ends of the link mechanism are pivotally connected to each other, and the center link mechanism
The center of the movable arm and the joint and the distance between the joint
Pivoting point between the link mechanism and the compression member and the compression member
And the distance from the pivot point of the movable arm.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description, the left side of FIG. 1 is the front and the right side is the rear. As shown in FIG. 1, the front and rear movable arms (2) and (2a), which are jointly connected to the front of the power shovel (1), respectively include front and rear hydraulic cylinders (4) and (3).
The crushing device is an attachment for crushing large crushed objects such as tree roots and construction waste wood at the tip of the front movable arm (2). (5) is attached.

Next, referring to FIG. 2 and subsequent figures, a crushing device (5)
The configuration of will be described. The tip of the front movable arm (2) is penetrated by a pivot (6) pointing in the left-right direction, and the lateral protrusion of the pivot (6) has a pair of left and right sides of a vertically elongated rearward crescent shape. The upper rear part of the pieces (7) (7) is pivotally supported.

As shown in FIG. 4, the left and right side pieces (7), (7) have a shape substantially the same as that of the side piece (7) on the inner side surface except for the upper end portions, through a plurality of spacers (8). Left and right reinforcement plates (9) (9)
Is stuck. The side edges (7) and the rear edge of the reinforcing plate (9) have a central edge that is recessed in an arc shape toward the front, and is a gripping edge that can come into contact with the surface of the object to be crushed (W1) such as the root of a tree described later. (10).

The left and right side pieces (7) and (7) and the reinforcing plate (9) and (9) are connected at their distal end portions by a lateral connecting member (11). A void (12) is formed between the left and right reinforcing plates (9) (9), and a horizontally long rectangular notch (13) continuous with the void (12) is formed at the upper edge of the connecting member (11). Has been formed.

The side piece (7), the reinforcing plate (9) and the connecting member (11)
The front compression member (14) is constituted by the above.

The side piece (7) has a forward projecting piece (7a) at its upper end, and the front projecting piece (7a) has a rear end that is pivotally attached to the movable arm (2). The tip of (15) is pivotally attached. At the joint part of the middle part of the center bending link mechanism (15), the front side compression member
The tip of the piston rod (17) of the hydraulic cylinder (16) which is the rotating means for (14) is pivotally attached, and the rear end of the hydraulic cylinder (16) is pivotally attached to the intermediate part of the movable arm (2). ing.

At both ends of the pivot (6), link pieces are provided.
The base end of (18) is fixed, and at the tip of the link piece (18), the base end of the mounting member (20) having the rear side compression member (19) fixed to the lower surface is together with the link piece (18). The connecting shaft (2
They are linked with 1).

The rear side constriction member (19) has a lower end portion having an acute-angled projecting shape and a front surface having a frontward crescent shape recessed in an arc shape in a rearward direction. The edge portion (19a) has a blade portion (22) whose side surface forms a forward crescent moon and is fixed by welding.

At the tip of the mounting member (20), the base end is pivotally attached to the middle part of the movable arm (2), and the piston of the hydraulic cylinder (23) is a rotating means for the constriction member (19). The tip of the rod (24) is pivotally attached.

In the crushing device (5) having the above-described construction, when the piston rod (17) of the hydraulic cylinder (16) is expanded and contracted, the front side compression member (14) is rotated in the front-rear direction and the hydraulic cylinder When the piston rod (24) of (23) is expanded or contracted, the rear side compression member (19) is rotated in the front-rear direction.

When the front clamping member (14) is rotated to the maximum rearward and the rear clamping member (19) is rotated to the maximum forward, the lower portion of the rear clamping member (19) becomes Void (1) of support member (14)
It projects through the notch portion (2) and the front portion of the front side constriction member (14) (see FIGS. 2 and 4).

Next, using the crushing device (5), the object to be crushed
A procedure for crushing the root portion of the tree (W1) will be described mainly with reference to FIGS.

First, as shown in FIG. 1, the crushing device (5), which is greatly expanded in the front-rear direction, is placed horizontally to be crushed.
Approaching (W1), front and rear clamping members (14) and (19) are respectively positioned in front of and behind the object to be crushed (W1).

In this state, when the piston rods (17) and (24) of the hydraulic cylinders (16) and (23) are extended sequentially or simultaneously, the constriction members (14) and (19) are moved toward each other. Rotate,
The gripping edge (10) of the front side constriction member (14) and the blade portion (22) of the rear side constriction member (19) are pressed against both the front and rear surfaces of the crushable object (W1), and the crushable object (W1) Is gripped by the crushing device (5) (see FIGS. 5 and 7).

The piston rods (1) of the hydraulic cylinders (16) (23)
7) When the (24) is further extended, the contact portion with the gripping edge (10) of the constriction member (14) in the crushed object (W1) and the contact portion with the blade portion (22) face in opposite directions. A large force is applied to the crushed object
Since stress concentrates on the contact portion with the blade portion (22) in (W1), the crushed object (W1) is bent from this portion,
It will be crushed (see FIGS. 6 and 8).

As described above, according to this embodiment, it is possible to easily crush not only the root of the tree but also the crushed material (W1) such as large industrial waste such as construction waste wood. Crushed tree roots can now be incinerated in an incinerator, and can also be used as auxiliary fuel.

The front compression member (14) and the rear compression member (19) are
Since the hydraulic cylinders (16) and (23) which are separate from each other are linked to each other so that they can be independently rotated, both the constriction members (14) (1
The rotation range of 9) is large.

Further, according to the crushing device (5) of the present embodiment, for example, a tire of an automobile or the like is cut by a blade portion, or the entire tire is strongly gripped by both constriction members (14) (19). It can also be deformed and used to remove the wheel cap from the tire.

Further, as shown in FIG. 9, the front side compression member
The end of the dead tree that is the object to be crushed (W2) is sandwiched by the lower end of (14) and the lower end of the rear constriction member (19),
If the sharp lower end of (19) is inserted into the object to be crushed (W2), the end of the object to be crushed (W2) is torn, and if the crushing device (5) is raised as it is, the object to be crushed (W2) can be torn in the longitudinal direction.

During the crushing work, a very large force is applied to the left and right side pieces (7) and the reinforcing plate (9) of the front side pressing member (14), but the left and right side pieces (7) and the reinforcing plate (9). ) Are connected by a connecting member (11), so that the front side compression member (1
4) is never transformed into a delusion.

The blade portion (22) is detachably attached to the rear side compression member (19) with a bolt or the like, not by welding, so that it can be replaced when the blade is worn. preferable. In this way, the rear side pressing member (19) to the blade (22)
Alternatively, the object to be crushed can be crushed by the front edge of the rear side pressing member (19) .

[0030] In addition, the link mechanism broken in this embodiment (1
5) The distance between the pivot point of the movable arm (2) and the joint part of the center bending link mechanism (15) is longer than the distance between the pivot axis (6) and the pivot point of the forward projecting piece (7a). And then implement it like this
Then, just extend the piston rod (17) slightly,
The front clamping member (14) can be largely rotated.

[0031]

According to the present invention, the following effects can be obtained. According to the inventions of claims 1 and 2 ,
Objects such as wood, stone, or concrete pieces can be reliably gripped. Further, since the front and rear clamping force members are linked to the independent rotating members that are independent of each other, the both clamping force members can be largely rotated. In addition, the left side is a pressure member
The tip parts of the right pair of side pieces are connected by a laterally-directed connecting member.
Since they are connected, a large size is applied to each side during gripping or crushing work.
Even if a large force is applied, the clamping member will not be deformed.
It

According to the invention described in claim 3, each side plate is
It is reinforced by the reinforcing plate.

According to the invention described in claim 4, the rotating means is provided.
Rotate the compression member greatly without operating it too much
Can be made.

[Brief description of drawings]

FIG. 1 is a side view of a power shovel including an attachment according to an embodiment of the present invention.

FIG. 2 is an enlarged side view of the attachment portion of the attachment.

FIG. 3 is an enlarged sectional view taken along the line III-III in FIG.

FIG. 4 is also an enlarged rear view of the attachment.

FIG. 5 is an enlarged side view of essential parts showing a state in which the root of the tree is also clamped by the attachment.

FIG. 6 is an enlarged side view of essential parts showing a state in which the root of the tree is crushed by the same attachment.

7 is a cross-sectional plan view taken along the line VII-VII of FIG.

8 is a cross-sectional plan view taken along the line VIII-VIII of FIG.

FIG. 9 is an enlarged perspective view showing another usage example of the attachment.
Is.

[Explanation of symbols]

(1) Power shovel (2) Front movable arm (2a) Rear movable arm (3) Rear hydraulic cylinder (4) Front hydraulic cylinder (5) Crusher (6) Axis (7) Side piece (7a) Forward Projecting piece (8) Spacer (9) Reinforcing plate (10) Gripping edge (11) Connecting member (12) Gap (13) Notch (14) Front side compression member (15) Center bending link mechanism (16) Hydraulic cylinder ( Rotating means) (17) Piston rod (18) Link piece (19) Rear compression member (19a) Bearing edge (20) Mounting member (21) Connecting shaft (22) Blade (23) Hydraulic cylinder ( Moving means) (24) Piston rod (W1) (W2) Crushed object

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04G 23/08 E02F 3/40

Claims (4)

(57) [Claims] 1. A front and rear portion 1 pivotally attached to a tip of a movable arm.
The pair of clamping members are linked to separate rotating means mounted on the movable arm and operating independently of each other so as to be opened and closed, and the clamping members are strongly pressed by the two clamping members. The attachment to be attached to the tip of the movable arm of the power shovel, in which one compression member is composed of a pair of left and right side pieces.
At the same time, connect the tips of
And the side shape is three days on the edge of the one compression member side.
The other compression member provided with a moon-shaped blade is the connecting portion.
So that they can pass through the inside of the material,
By rotating in the approaching direction, the clamping force is applied by both clamping members.
Bend the crushed object at the contact with the blade.
An attachment for a movable arm of a power shovel, which is characterized in that it can be crushed . 2. The connecting member has a tip end portion of the other pressing member.
The attachment for a movable arm of a power shovel according to claim 1, wherein a notch for passing therethrough is provided . 3. A plurality of spacers are provided on the inner surface of the side piece.
And a reinforcing plate having substantially the same shape as the side piece is fixed.
Or the attachment for the movable arm of the power shovel described in 2. 4. A pressure-applying member and a movable arm near the tip end thereof,
From the two links whose intermediate joints are linked to the rotation means
The center of the link mechanism is
Distance between the pivot point of the link mechanism and the movable arm and the joint
Separate from the pivot point and the front of the center bending link mechanism and the compression member.
It should be longer than the distance between the pressure member and the pivot point of the movable arm.
An attachment for a movable arm of a power shovel according to any one of claims 1 to 3.