JPH10139357A - Opening and closing bucket device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect a turning mechanism from being damaged by a collision with an obstacle by providing a main body bucket and an opening and closing bucket in such a manner as to be freely opened and closed, and setting the width of the turning mechanism of the bucket device smaller than the width between the back face parts in the opening and closing direction of both buckets when the buckets are closed. SOLUTION: A disc-like base 7 is integrally disposed on the lower side of a chassis 14 provided for fitting a bucket device to a working machine, and a turning part 8 having many lock parts 4' on the outer periphery thereof is fixed to the lower surface of the base 7. A main body bucket 9 is fixed to a chassis 36 below the turing part 8, the upper end of an opening and closing bucket 10 is pivoted by a pin 18, and both buckets 9, 10 are opened and closed by the operation of a hydraulic cylinder 15. At this time, a turning mechanism formed by the base 7, the turning part 8 and so on is formed in such a manner as to be smaller in width than the width between the respective buckets 9, 10 when the buckets 9, 10 are closed, and if seen from below, the turning mechanism is shielded by both buckets 9, 10 to protect the turning mechanism from a collision with an obstacle.

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 present applicant is disclosed that enables the main body bucket to be turned horizontally.

[0004]

As described above, by allowing the openable bucket to be further turned, a wide variety of work can be performed, and work efficiency can be greatly improved.

[0005] In such a swivel-type opening / closing bucket, the part of the swivel mechanism is a relatively complicated part composed of a hydraulic motor, a drive gear, and the like. If the bucket collides, the bucket is likely to fail or be damaged, which impairs the durability of the bucket.

SUMMARY OF THE INVENTION In view of the foregoing, the present invention has been made to reduce as much as possible that a relatively complicated structure of a turning mechanism portion collides with an obstacle during work and causes damage or failure. It is an object of the present invention to provide a revolving openable bucket.

[0007]

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, having a turning mechanism having a turning portion that is rotated in the plane direction by a turning motor, the turning portion is provided with a main body bucket and an opening / closing bucket on the opposite side to the base so as to be openable and closable, The width of the turning mechanism is smaller than the width between the back portions of the two buckets in the opening and closing direction when the main body bucket and the opening and closing bucket are closed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to attach a bucket device to a shovel body portion from which a shovel portion such as a power shovel has been removed, a chassis 14 having body mounting bosses 1 and 1 'arranged at front and rear positions is provided, and a disk below the chassis 14. Substrate 7 is provided integrally. The gear support 6 is interposed between the substrate 7 and the turning portion 8, and the lock portion 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 substrate 7 below the chassis 14 by the swivel lock body mounting bolts 25.

On the lower surface of the substrate 7, a substrate mounting bolt 7 '
Thus, the gear body 6 is attached to the gear body 5, and the internal gear 5 is pivotably fitted inside the support 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. On the lower surface of the gear body 5, a turning portion 8 provided with a number of groove-shaped lock portions 4 'on its outer periphery is 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 substrate 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 elastic force of the coil spring 28, and 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 is fixed to a rotary joint fixing part 22 provided at a center part of the chassis 14 and at a center part of the turning part 8 by a rotary joint mounting bolt 23. The rotary joint is provided with a rotary joint detent stop 21, and the rotary joint detent 20 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 a hydraulic cylinder 15 disposed at a desired position on the chassis 14.

The main body bucket 9 has a substantially flat upper surface portion 32, a pair of side surface portions 33 connected to both left and right ends of the upper surface portion 32, a curved back portion 34, and a lower end of the back 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.

As shown in FIG. 1, the table-type swivel mechanism including the base 7, the swivel unit 8 and the like, when the main body bucket 9 and the opening / closing bucket 10 are closed, the main body which is on the back side in the opening / closing direction of both buckets. The width between the back portion 34 of the bucket 9 and the back portion 38 of the opening / closing bucket 10 is smaller than
As a result, the turning mechanism is hidden by the buckets 9 and 10 when viewed from below.

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 rotational 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.

[0018]

As described above, according to the present invention, since the width of the turning mechanism is smaller than the width between the back portions of the main body bucket and the open / close bucket when the two buckets are closed with each other, the turning mechanism can be turned during operation. Since the mechanism is protected from below by the bucket, there is an advantage that the risk of damage or failure of the turning mechanism having a complicated structure by colliding with an obstacle is reduced, and the durability can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of an openable / closable 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 the lock unit and the revolving unit 7. FIG.

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 mounting part 1 'Main body mounting part 2 Hydraulic motor 2' Hydraulic motor gear 3 Rotation lock body 3 'Lock pin 3 "Pin pushing lever 4 Lock part 4' Lock part 5 Gear body 6 Gear body support 7 Substrate 7 ' Board 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 38 Opening / closing bucket rear surface

Claims (1)

[Claims] A base provided with a mounting portion on the working machine side;
A turning mechanism having a turning part facing the surface of the base opposite to the attachment part, and having a turning part rotated in the surface direction by a turning motor;
A main body bucket and an opening / closing bucket are provided on the opposite side to be openable and closable, and the width of the turning mechanism is set to be smaller than a width between the back and forth portions of the two buckets in the opening / closing direction when the main body bucket and the opening / closing bucket are closed. An openable / closable bucket device.