JP2879145B2 - Swivel bucket device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revolving bucket device. 2. Description of the Related Art There is known a bucket which is used by being attached to a working machine so that the bucket can be turned. For example, Japanese Unexamined Patent Application Publication No. 60-175633 discloses an openable / closable bucket in which a main body bucket and an openable / closable bucket are pivotally connected to each other at upper ends thereof so as to be freely openable and closable. An invention by the applicant of the present application is disclosed. In this conventional pivot type bucket, a rotation mechanism including an internal gear is provided between the bucket and a portion to be attached to a work machine, and a drive motor having the pivot mechanism attached to a substrate on the attachment portion side. To drive the swing. [0004] In the above-mentioned conventional revolving bucket device, the assembly of the components of the revolving mechanism including the internal gear, the substrate, and the rotating plate is not considered. It has the drawback of being difficult and difficult to disassemble for repair. [0005] The present invention eliminates such disadvantages,
It is an object of the present invention to provide a structure of a swing mechanism portion of a swing type bucket which is easy to assemble and is disassembled for repair. [0006] In order to solve the above-mentioned problems, the present invention relates to a substrate provided with a mounting boss for mounting to a working machine side, and an annular surface formed on a surface of the substrate opposite to the mounting boss. The gear supporting body is fixed with bolts inserted from above, and an internal gear that is driven to rotate by a turning drive motor is arranged inside the gear supporting body and supported by the gear supporting body. The rotary plate is attached to the lower surface of the gear by bolts inserted from below, and the bucket is further supported by the rotary plate. DETAILED 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 pair of left and right body bosses 1 and 1 'are disposed at front and rear positions. A chassis 14 is provided, and a disk-shaped substrate 7 having a central portion opened below is provided integrally therewith. An annular gear support 6 is interposed between the substrate 7 and the rotary plate 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. . Swivel lock body mounting bolt 25
As a result, the turning lock body 3 is moved to the substrate 7 on the lower side of the chassis 14.
It is attached to the upper surface. A gear supporting body 6 is attached to the lower surface of the substrate 7 with mounting bolts 7 'inserted from above, and the internal gear 5 is pivotably fitted inside the supporting body 6. A hydraulic motor gear 2 ′ driven by a hydraulic drive motor 2, that is, a pinion 2 ′ meshes with a 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 rotating plate 5 provided with a number of groove-shaped lock portions 4 'on its outer periphery is fixed by bucket mounting bolts 13 inserted from below. The hydraulic drive motor 2 is disposed outside one of the chassis 14 on the same side of the board 7 as the chassis 14, 14 so as to extend beyond the space between the chassis 14, 14. The pair of ribs 14 ′, 14 ′ provided between the outer side surface and the upper surface of the substrate 7 cover both sides of the drive motor 2 as viewed from the side surface. 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 substrate of the pin pushing lever 3 "by the resilient force of the spring. The portion of the hanging protruding frame of the lock pin 3 ′ is locked across the lock portion 4 and the lock portion 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 rotating plate 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, 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 rotating plate 8 can be turned. The chassis 14 is provided with the chassis assisting plate 1.
4 'is provided, and a rib 36' is also provided on a chassis 36 provided below the rotating plate 8 which constitutes a part of the above-mentioned turning mechanism. A rotary joint fixing portion 22 provided at the center of the chassis 14 and at the center of the rotary plate 8 has a rotary joint mounting bolt 2.
3, the rotary joint 12 is fixed so as to protrude toward the substrate 7 side. The rotary joint is provided with a rotary joint detent stop 21, and the rotary joint detent 20 provided on the substrate 7 is brought into contact with the contact part 21. A hydraulic hose 19 is connected to the rotary joint and the hydraulic hose 1
9 is connected to the rotary cylinder 15 and the hydraulic cylinder 15 disposed at a desired position on the chassis 36 opposite to the direction in which the 12 projects. 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 32 is fixed to the lower ends of a pair of chassis 36 below the rotary plate 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 portion 32 opposite to the opening / closing bucket 10, the upper surface portion 32 is pivotally mounted between the chassis 36, 36 rising from the upper surface portion 32 by a mounting pin 16. 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 or the like. By rotating and attaching the opening and closing bucket 10 so as to form the edge of the opening and closing bucket 10, 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 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. Further, by reducing the thickness from the substrate to the rotating plate as shown in the figure, the length from the mounting portion to the working machine to the tip of the bucket can be shortened, thereby reducing the weight and the working machine arm. The load on the side bucket cylinder and link can be reduced. As described above, according to the present invention, the substrate and the gear body support are fixed by bolts inserted from above, and the internal gear type gear body and the rotary plate supported by the gear body are supported. It is designed to be fixed with bolts inserted from below, and it is easy to assemble such that the board and the rotating plate can be fixed with bolts after the gear body and the gear body are assembled first. There is. On the other hand, if the bolts are loosened, the substrate or the rotating plate can be easily removed, so that disassembly for repair is extremely easy.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a revolving 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 unit and a rotating body 7; 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. [Description of Signs] 1 Main body mounting section 1 'Main body mounting section 2 Hydraulic drive motor 2' Hydraulic motor gear 3 Rotation lock body 3 'Lock pin 3''Pin push lever 4 Lock section 4' Lock section 5 Gear body 6 Gear body Support body 7 Substrate 7 'Substrate mounting bolt 8 Rotating part 9 Main body bucket 10 Opening / closing bucket 11 Blind plate 12 2-port rotary joint 13 Bucket mounting bolt 14 Chassis 14' rib 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 Rotary lock body Bolted 26 Grease nipple 27 Grease seal 28 coil spring 29 seal 30 recess 31 openings 32 top surface 33 side portion 34 rear portion 35 bottom portion 36 chassis 37 mounting plate

Claims (1)

(57) [Claims] An annular gear support body is fixed to a surface of the substrate having a mounting boss for mounting to the work machine side by a bolt inserted from above on a surface opposite to the mounting boss, and the gear support is turned inside the body. A gear body of an internal gear type that is driven to rotate by a driving motor is arranged and supported by the gear body, and a rotating plate is attached to a lower surface of the internal gear body with bolts inserted from below, and furthermore, A rotating bucket device comprising a bucket supported by a rotating plate.