JPH10139355A - Opening and closing bucket device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a hydraulic hose from being twisted at a turning part by providing a rotary joint for supplying pressure oil to a hydraulic cylinder for opening and closing a bucket fitted to the opposite side to the base in the center of a turning part for supporting an opening and closing bucket device in such a manner as to be freely turned. SOLUTION: A disc-like base 7 having the central part opened is integrally disposed under a chassis 14 provided for fitting a bucket device to a working machine. Further, a turning part 8 having many lock parts 4' on the outer periphery thereof is fixed to the lower surface of the base part 7, a main body bucket 9 is fixed to a pair of chassises on the lower side of the turning part 8, and the upper end of an opening and closing bucket 10 is pivoted by a pin 18. The main body bucket 9 and the opening and closing bucket 10 can be opened and closed by a hydraulic cylinder 15 disposed along the space between the chassises 36, and at this time, pressure oil is supplied to the hydraulic cylinder 15 through a rotary joint provided on the rotary joint fixed parts of the central areas of the chassis 14 and the turning part 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an openable / closable bucket device.

[0002]

2. Description of the Related Art A body bucket and an opening / closing bucket are pivotally connected to each other at their upper ends so that they can be opened and closed with each other. There are well-known products that can be used for various purposes such as lifting and transporting long objects and blocks, and transporting cement milk and powder.

In this case, the main body bucket and the opening / closing bucket are pivotally mounted on the upper surface side of the main body bucket, and the lower end side of the opening / closing bucket is opened and closed by a hydraulic cylinder arranged above. For example, Japanese Unexamined Patent Publication No. 60-175633 discloses such an openable / closable bucket.
An invention by the applicant of the present application that enables the main body bucket to pivot horizontally is disclosed.

[0004]

In the above-mentioned conventional apparatus,
When pressure oil is supplied from the working machine to the hydraulic cylinder, the turning portion of the bucket must pass through, and there is a disadvantage that the structure is complicated because it is necessary to prevent the hydraulic hose from being twisted due to turning.

According to the present invention, a structure for supplying pressurized oil to a hydraulic cylinder that opens and closes a bucket can be simplified in a swing type openable and closable bucket.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a base provided with a mounting portion for a working machine, and a base opposed to a surface of the base opposite to the mounting portion.
And, a swivel mechanism having a swivel part that is rotated in the plane direction by a swivel motor, and the swivel part has a bucket and a hydraulic cylinder for opening and closing the bucket mounted on the opposite side to the base, A rotary joint for supplying pressure oil to the hydraulic cylinder is provided at the turning center.

Further, in the invention of claim 2 of the present application, the rotary joint is fixed to the rotary joint fixing portion of the turning portion so as to protrude to the side opposite to the hydraulic cylinder. .

Further, it is conceivable that a rotary joint detent is provided on the base side, and a contact part of the detent is provided on the rotary joint.

In the invention according to claim 4 of the present application, the base including the pivot center is open at its periphery.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to attach a bucket device to a shovel body portion of a working machine such as a power shovel from which a shovel portion has been removed, a chassis 14 having body mounting bosses 1 and 1 'arranged at front and rear positions is provided. A disc-shaped base 7 having a central portion opened at the bottom is integrally provided. The gear support 6 is interposed between the base 7 and the turning portion 8, and the lock 4 is fixed to a desired position on the outer peripheral surface of the gear support 6 by a lock fixing bolt 24. The swivel lock body 3 is mounted on the upper surface of the base 7 below the chassis 14 by the swivel lock body mounting bolts 25.

A gear supporting body 6 is mounted on the lower surface of the base 7 with mounting bolts 7 ', and the internal gear 5 is rotatably fitted inside the supporting body 6. A hydraulic motor gear 2 ′ driven by the hydraulic motor 2, that is, a pinion 2 ′ meshes with the gear body 5.
The gear body 5 is supported by a step on the inner peripheral surface of the gear support body 6. A turning portion 8 having a plurality of groove-shaped locking portions 4 'on the outer periphery of the lower surface of the gear body 5.
Are fixed by bucket mounting bolts 13.

A reciprocating portion of the lock pin 3 'is inserted into a hollow portion of the revolving lock body 3 attached to the base 7 of the chassis 14, and a coil spring 28 is wound around the reciprocating portion, thereby revolving the revolving lock body. The coil spring 28 interposed between the upright portion 3 and the pin pushing lever 3 "
Normally, the reciprocating portion of the lock pin 3 'is pressed against the base of the pin pushing lever 3 "by the elastic force of the spring. The part of the hanging protruding frame of the lock pin 3 ′ is locked across the lock part 4 and the lock part 4 ′,
When the is not turned, the lock pin 3 'can be kept locked with the lock portion 4 and the lock portion 4'.

When the turning portion 8 is turned, the pin push lever 3 "is pressed by the hydraulic device or other appropriate means or manually by the resilience of the coil spring 28 so that the lock pin 3" is pressed. Is moved to release the locked state of the lock portion 4 and the lock portion 4 'by the lock pin 3', so that the turning portion 8 can be turned.

The chassis 14 is provided with the chassis assisting plate 1.
4 'is provided, and a chassis assisting plate 36' is also provided on a chassis 36 provided below the turning portion 8 which constitutes a part of the turning mechanism as described above. A rotary joint 12 is fixed to a rotary joint fixing portion 22 provided at a center portion of the chassis 14 and at a center portion of the turning portion 8 by a rotary joint mounting bolt 23 so as to protrude toward the base portion 7 side. ing. The rotary joint is provided with a rotary joint detent stop 21, and the rotary joint detent 20 provided on the base 7 is brought into contact with the contact part 21. A hydraulic hose 19 is connected to the rotary joint, and the hydraulic hose 19 is connected to the rotary cylinder and a hydraulic cylinder 15 disposed at a desired position on a chassis 36 opposite to the direction in which the rotary joint 12 projects.

The main body bucket 9 has a substantially flat upper surface portion 32, a pair of side surface portions 33 connected to left and right ends of the upper surface portion 32, a curved rear portion 34, and a lower end of the rear portion 34. And a bottom portion 35 in the shape of a straight plate.
It has a structure that the opposite side to the back part 34 is open,
At the end on the side of the opening, the opening / closing bucket 1 is located above the upper surface 32 covering the upper end of the side surface 33.
The upper end of the bracket 0 is pivotally connected to the mounting pin 18 so as to be freely opened and closed. The upper surface of the upper surface portion 32 is fixed to the lower ends of a pair of chassis 36 below the turning portion 8.

The hydraulic cylinder 15 is mounted on the upper surface 32
Above, is disposed along the chassis 36, 36 in the left-right direction substantially along the upper surface 32, and the bottom end of the hydraulic cylinder 15 is
At a position near the end of the upper surface 32 opposite to the opening / closing bucket 10, it is pivotally connected with the mounting pins 16 between the chassis 36, 36 rising from the upper surface 32. On the other hand, the tip of the hydraulic cylinder 15 on the rod side is pivotally connected by a pivot pin 17 to a pair of mounting plates 37 projecting from the upper surface of the opening and closing bucket 10.

Further, the main body bucket 9 and the opening / closing bucket 10
An opening 31 is formed between the rims of the side portions of the side portions when the buckets 9 and 10 are closed. As shown in FIG. 1, the opening 31 is formed such that an intermediate portion in the up-down direction when the tip of the bucket is downward is widened, and is gradually narrowed upward and downward from the widest portion. ing. Blind plates 11 are provided on both side surfaces of the opening / closing bucket 10 so that when both buckets are closed, openings 31 formed on both side surface portions thereof can be closed. In addition, the blind plate 11 is formed with a curved concave portion 30 in the upper half of one end edge thereof. That is, the opening 31 is for grasping a long object, and therefore it is necessary to remove the blind plate 11 in order to naturally grasp a long object. By rotating and attaching the opening and closing bucket 10 so as to form the lip, the opening 31 is not closed, so that the blind plate 11 can be left attached.

As shown in the figure, two lock pins 3 'are provided in the rotating direction, and these lock pins 3', 3 'are pushed by one pin pushing lever 3''. That is, when the lock portion 4 'of the turning portion 8 is disengaged from the lock portion 4', the lock pins 3 'and 3' both move outward to release the lock. When the pin push lever 3 '' is returned from this state, as shown in FIGS. 2 and 3, one lock pin 3 'abuts on the ridge of the lock portion 4' of the turning portion 8, and
The other lock pin 3 'fits into the groove and is locked. Further, when the turning portion 8 is rotated by half the pitch between the lock portions, only the other lock pin 3 'is locked. That is, the turning portion 8, that is, the bucket can be locked and held every half rotation of the pitch of the lock portion.

[0019]

As described above, according to the present invention, a rotary joint is provided in a swivel-type openable / closable bucket in which the openable / closable bucket can be swiveled to supply pressurized oil to a hydraulic cylinder of the openable / closable bucket. From
There is an effect that the connection of the hose is simple and the structure can be simplified by merely arranging the rotary joint without the hydraulic hose being twisted by the turning portion.

Further, since the rotary joint is fixed to the fixed portion so as to project to the opposite side from the hydraulic cylinder on the bucket side, interference with the vertical swinging movement of the hydraulic cylinder when opening and closing is provided. To avoid this, there is no need to take a large space between the bucket and the bucket, and there is an effect that the whole bucket can be configured to be lightweight and compact.
In particular, since the length from the portion attached to the work machine to the tip of the bucket can be reduced, a large excavating force can be exerted.

[Brief description of the drawings]

FIG. 1 is a side view of a revolving-type opening / closing bucket device embodying the present invention.

FIG. 2 is a plan view showing a main part clearly with an upper chassis removed.

FIG. 3 is a plan view clearly showing a lock portion and a pivot base 7 which are main portions of the present invention.

FIG. 4 is a bottom view of a swivel section 8 which is a main part of the present invention.

FIG. 5 is a side view in which a part of a turning portion is made into a cross section.

FIG. 6 is a detailed view of a lock device.

FIG. 7 is a longitudinal sectional view of a gear body and a gear body.

FIG. 8 is an exploded perspective view of a main part showing a relationship between a lock portion, a turning portion, and a turning lock body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body attachment part 1 'Main body attachment part 2 Hydraulic motor 2' Hydraulic motor gear 3 Swivel lock body 3 'Lock pin 3 "Pin pushing lever 4 Lock part 4' Lock part 5 Gear body 6 Gear body support body 7 Base 7 ' Base mounting bolt 8 Revolving part 9 Main body bucket 10 Open / close bucket 11 Blind plate 12 2-port rotary joint 13 Bucket mounting bolt 14 Chassis 14 'Chassis support plate 15 Hydraulic cylinder 16 Hydraulic cylinder mounting pin 17 Hydraulic cylinder mounting pin 18 Opening / closing bucket mounting Pin 19 Hydraulic hose 20 Rotary joint detent 21 Rotary joint detent stop 22 Rotary joint fixing part 23 Rotary joint fixing bolt 24 Lock part fixing bolt 25 times Roller lock mounting bolt 26 Grease nipple 27 Grease seal 28 Coil spring 29 Seal 30 Concave portion 31 Opening 32 Top surface 33 Side surface 34 Back surface 35 Bottom surface 36 Chassis 36 ′ Chassis reinforcement plate 37 Mounting plate

Claims (4)

[Claims] A base provided with a mounting portion on the working machine side;
A turning mechanism having a turning portion facing the surface of the base portion opposite to the attachment portion, and having a turning portion rotated in the surface direction by a turning motor. An openable / closable bucket device, wherein a bucket and a hydraulic cylinder for opening and closing the bucket are mounted on the opposite side, and a rotary joint for supplying pressure oil to the hydraulic cylinder is provided at the center of rotation. 2. The openable and closable bucket device according to claim 1, wherein a rotary joint is fixed to the rotary joint fixing portion of the turning portion so as to protrude to a side opposite to a hydraulic cylinder. 3. The openable and closable bucket device according to claim 1, wherein a rotary joint detent is provided on the base side, and a contact portion of the detent is provided on the rotary joint. 4. The openable and closable bucket device according to claim 1, wherein the base portion is open around its periphery including the turning center portion.