JP2827006B2 - Open / close bucket device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an openable / closable bucket device. 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. Not only excavation, but also objects that can be used for various purposes such as lifting and transporting long objects and blocks, and transporting cement milk and powder are known. 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. The hydraulic cylinder is disposed between the turning mechanism and the bucket with one end pivotally attached to the main body bucket and the other end pivoted to the opening / closing bucket. [0004] As described above, in the openable / closable bucket device provided with the turning mechanism, the hydraulic cylinder is disposed between the turning mechanism and the bucket. The lower part is hidden, and a plate-shaped chassis that connects the bucket and the swivel mechanism is located on the side of the hydraulic cylinder, making it difficult to see this hydraulic cylinder from the outside. There was a disadvantage that it was difficult to perform. Of course, it is possible to form an opening window in the chassis, but since it supports the bucket, there is a drawback that strength is weakened when a large opening is formed, and there is a drawback that only a small one can be opened. [0005] The present invention solves the above-mentioned conventional drawbacks and allows the hydraulic cylinder disposed between the turning mechanism and the bucket to be easily visually recognized from the outside. It is an object of the present invention to provide an openable and closable bucket device that is easy to perform. SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a base provided with a mounting portion to a working machine, and a base provided on a surface of the base opposite to the mounting portion. Opposite
And a turning mechanism having a turning portion rotated by the turning motor in the plane direction. The turning portion is provided with an opening / closing bucket and a hydraulic cylinder for opening / closing the bucket on the side opposite to the base. In addition, an opening is formed in the base portion and the turning portion so that the hydraulic cylinder can be visually recognized from the base side. 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 attachment bosses 1 and 1 'arranged at front and rear positions is provided. A base 7 having a disk-like shape below and a large opening 39 formed in the center is integrally provided. A gear support body 6 is provided between the base 7 and the turning portion 8.
The lock portion 4 is fixed at a desired position on the outer peripheral surface of the gear body 6 by a lock portion fixing bolt 24. By the turning lock body mounting bolt 25,
The turning lock 3 is mounted on the upper surface of the base 7 below the chassis 14. On the lower surface of the base 7, a board 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 revolving portion 8 having a number of groove-shaped lock portions 4 'on its outer periphery and having a large opening 40 in the center is fixed by a bucket mounting bolt 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 turning 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 a chassis intensifying 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. The rotary joint fixing part 22 which is provided at the center part of the chassis 14 and at the center part of the turning part 8 across the opening 40 includes:
The rotary joint is fixed 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 arranged across the opening 39 of 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 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 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 portion 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 open / close 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. On the other hand, from above, most of the hydraulic cylinder 15 can be viewed from above, which is the base 7 side, through the openings 39 and 40. 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 a single 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. As described above, according to the present invention, in a swivel-type opening / closing bucket in which a hydraulic cylinder for opening and closing the bucket is provided between the swivel mechanism and the bucket, the base of the swivel mechanism and the swivel portion are provided. Since the opening that allows the hydraulic cylinder to be seen is provided, even when both sides of the hydraulic cylinder are covered with a chassis or the like, it is possible to visually check the state of the hydraulic cylinder and to perform maintenance and cleaning. is there.

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. [Description of Signs] 1 Main body mounting portion 1 'Main body mounting portion 2 Hydraulic motor 2' Hydraulic motor gear 3 Revolving lock body 3 'Lock pin 3''Pin pushing lever 4 Lock section 4' Lock section 5 Gear body 6 Gear body support Body 7 Board 7 'Board mounting bolt 8 Revolving part 9 Main 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 Locking part fixing bolt 25 Body 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 back 39 Opening 40 Opening

Claims (1)

(57) [Claims] A swivel including a base provided with a mounting part to the work machine side, and a turning part facing a surface of the base opposite to the mounting part and rotated in the surface direction by a turning motor. Having a mechanism, the pivoting portion, on the opposite side to the base, attached an opening and closing bucket and a hydraulic cylinder for opening and closing the bucket, and the base and the pivoting portion,
An opening / closing bucket device, wherein an opening through which the hydraulic cylinder is visible from the base side is formed.