JPH10101290A - Opening/closing bucket device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make ordinary excavating operations efficiently performable by taking the capacity of a body bucket without taking a slewing radius in case or turning, in this turning type opening/closing bucket. SOLUTION: In this bucket device, an upper end at the side of an opening part of a side piece 33 of a body bucket 9 is overhung from a turning center line P relatively large enough, and likewise a lower end is made to come near to this turning center line P, and a line Q connecting these ends themselves is made so as to slant to this turning center line P, whereby the extent of capacity in the body bucket 9 is thus enlarged, insofar as possible.

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.

[0003] Further, in such an openable / closable bucket, a main body bucket is attached to a swiveling mechanism so that the entire bucket is swiveled, which has been invented by the inventor of the present application (Japanese Patent Application Laid-Open No. 60-175633). Gazette).

[0004]

In the apparatus in which the entire bucket is swung as described above, it is desirable that the overhang length of the bucket from the center of the swirl is made as equal as possible. This is because, if it is asymmetric, the turning radius becomes large, and it is not preferable that an unbalanced load is generated in the bearing portion during turning.

Therefore, even when the bucket is viewed from the side, the center of rotation is substantially at or near the center in the left-right direction. On the other hand, the main body bucket is the same as a general single type bucket. Therefore, it is necessary to increase the capacity as much as possible.

According to the present invention, in such a swivel type opening / closing bucket, ordinary excavation work can be efficiently performed without increasing the turning radius at the time of turning and increasing the capacity of the main body bucket. It is intended to be.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises a main body bucket attached to an arm of a working machine, and an opening / closing bucket attached to the main body bucket. A side opposite to the back side between the left and right side parts is opened, and an opening / closing bucket closing the opening is pivotally opened and closed near an end on the opening part side of the upper surface covering the upper end of the side part. Being worn, and wherein the main body bucket is pivotable about a pivot center passing through the upper surface portion,
The lower end of the side edge of the open side is located near the turning center line P when viewed from the side, and the upper end also protrudes relatively largely in the opposite direction to the turning center line P from the back side. The capacity of the main body bucket is made larger than that of the opening / closing bucket so that the line Q connecting the upper end and the lower end on the side of the open side of the side surface is inclined with respect to the turning center line P. is there.

[0008] Similarly, the invention of claim 2 of this application is characterized in that the lower end of the side portion on the opening side is located slightly closer to the opening / closing bucket than the turning center line P.

In the above, it is preferable that the open side edge of the side portion is recessed in the middle to form an opening in the side surface between the opening and closing bucket.

[0010]

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 fixing 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 revolving portion 5 having a number of groove-shaped lock portions 4 'on its outer periphery is fixed by bucket mounting bolts 13.

The reciprocating part of the lock pin 3 'is inserted into the hollow part of the revolving lock body 3 attached to the base plate 7 of the chassis 14, and a coil spring 28 is wound around the reciprocating part. 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 ′, and a chassis 1 provided below the turning portion 8
4 also has a chassis assisting plate 14 '. 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 is disposed below one hydraulic cylinder mounting pin 16 provided at the end of the hydraulic cylinder 15, and the opening / closing bucket 10 is disposed below another hydraulic cylinder mounting pin 17. The two buckets are pivotally connected by an opening / closing bucket mounting pin 18 so that the opening / closing bucket 10 can be opened and closed with respect to the main body bucket 9.

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 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.

In this case, the upper end of the side edge of the side portion 33 on the side of the open portion is provided so as to protrude more toward the opening / closing bucket 10 than the turning center line P by the hydraulic motor 2, while the lower end is provided. , A line Q connecting the upper end and the lower end thereof is provided obliquely with respect to the turning center line P, and provided near the turning center line P and slightly closer to the opening / closing bucket 10 than the turning center line P. 9 is much larger than the opening / closing bucket 10. That is, the turning center line P is arranged at a substantially central position of the entire bucket as shown in the figure, but by arranging the edge of the side surface portion 33 on the open side in this way, the main body bucket performing the excavation work 9 has a large capacity.

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 rotation direction, and these lock pins 3', 3 'are pushed by one pin pushing lever 3''. That is, when the lock portion 4 'of the rotating portion 8 is disengaged from the lock portion 4', the lock pins 3 'and 3' 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 'comes into contact with the crest of the lock portion 4' of the rotating portion 8, and
The other lock pin 3 'fits into the groove and is locked. Further, when the rotating portion 8 is rotated by half the pitch between the lock portions, only the other lock pin 3 'is locked. That is, the rotation unit 8, that is, the bucket can be locked and held every half rotation of the pitch of the lock unit.

[0020]

As described above, according to the present invention, the upper end of the open side edge of the side surface of the main body bucket is moved from the turning center line P to the turning type openable bucket in which the entire bucket can be turned. In addition, by protruding relatively large toward the opening / closing bucket side, the lower end portion is provided obliquely near the turning center line P, so that even when the turning center line is provided substantially at the center of the entire bucket, the capacity of the main body bucket is relatively small. This has the effect that the excavation work can be efficiently performed by the main body bucket with the open / close bucket open.

[Brief description of the drawings]

FIG. 1 is a side view of a rotary bucket device according to the present invention.

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

FIG. 3 is a diagram showing a lock portion and a rotating body 7 which are main components of the present invention.
FIG.

FIG. 4 is a bottom view of a rotating unit 8 which is a main part of the present invention.

FIG. 5 is a side view in which a part of a rotating part is sectioned.

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 unit, a rotation unit, and a rotation 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 Rotation lock body 3 'Lock pin 3 "Pin pushing lever 4 Lock part 4' Lock part 5 Gear body 6 Gear body support 7 Rotation body 7 ′ Rotating body mounting bolt 8 Rotating part 9 Body bucket 10 Opening / closing 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 2 5 Rotation lock body mounting bolt 26 Grease nipple 27 Grease seal 28 Coil spring 29 Seal 30 Concave part 31 Opening part 32 Top surface part 33 Side part 34 Back part 35 Bottom part

Claims (3)

[Claims] 1. A main body bucket attached to an arm side of a work machine, and an opening / closing bucket attached to the main body bucket, and the main body bucket is open on a side opposite to a back part between left and right side parts thereof. In addition, an opening / closing bucket that closes the open portion is pivotally connected to be openable and closable near an open portion side end of an upper surface portion that covers an upper end of the side surface portion, and the main body bucket pivots through the upper surface portion. A pivotable centering center, wherein the lower end of the edge of the side portion on the open side is located near the pivoting center line P when viewed from the side, and the upper end is also located on the back side with respect to the pivoting centerline P. And the line Q connecting the upper end and the lower end on the side of the open side of the side surface is inclined with respect to the turning center line P, so that the capacity of the main body bucket is opened and closed. Openable bucket device being characterized in that greater than Tsu bets. 2. The openable / closable bucket according to claim 1, wherein the lower end of the side portion on the open side is located slightly closer to the openable / closed bucket side than the turning center line P. 3. The openable / closable type according to claim 1, wherein an opening edge of the open side of the side surface portion is concavely recessed on the way to form an opening in a side surface between the open / close bucket and the open / close bucket. Bucket device.