JP2002188299A - Reaction rotating apparatus for shovel machine attachment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaction rotating apparatus for various kinds of attachments for a shovel machine such as a crushing apparatus and a cutter apparatus, which suppresses degradation in stationary state holding force caused by abrasion of a sliding piece and generation of wobbles caused by partial gap on a sliding surface, and extends time when the sliding piece, etc., need replacement, to thereby ensure accurate operation of the various kinds of attachments, and improve the durability and cost efficiency of the apparatus. SOLUTION: According to the reaction rotating apparatus, a ring sliding plate equipped with a contact pressure regulating means for the sliding surface is arranged between a disk substrate below an attachment installing portion and a ring flange above an attachment mounting portion, whereby degradation in contact pressure caused by abrasion of the sliding surface can be corrected. Further, the stationary state holding force is ensured, and generation of the partial gap on the sliding surface is suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reaction force rotating device used for disassembling a reinforced steel building or the like, or for various shovel machine attachments such as a crushing device or a cutter device used for cutting wood, and more particularly to a crushing device or a crushing device. A reaction force that makes it possible to suppress a decrease in the stationary holding force of a cutter device or the like in a stationary state for a long period of time and that can correct the play of a crushing device or a cutter device due to the generation of a gap in a sliding surface. It relates to a rotation device.

[0002]

2. Description of the Related Art In a crushing device or a cutter device used for dismantling a reinforced steel building or cutting down timber, a work arm for gripping and crushing or cutting a work object is more likely to be applied to the work object. In order to apply an effective crushing force and cutting force, it is necessary to rotate the work arm according to the positional relationship with the work object. Therefore, when the direction of the force applied to the work object by the work arm is different from the direction of the force to be applied to the work object by the work arm when the work arm grips the work object, the work object is moved to the work arm. The force applied by the work object to the work arm so that the direction of the force applied to the work arm coincides with the direction of the force that the work arm should apply to the work object, in other words, the angle between the work arm and the work object becomes a right angle A reaction force rotating device for automatically rotating the work arm.

[0003] This reaction force rotating device rotates when the work arm does not grasp the work object at a position perpendicular to the work object, and when the work arm does not grasp the work object,
Alternatively, if the user is at a position perpendicular to the work object even if the user holds the device, it is necessary to maintain a stationary state without rotating from the viewpoint of preventing danger. Therefore, the rotation is performed by sliding, and at rest, the stationary state is maintained by the frictional resistance of the sliding surface.

In a conventional reaction force rotating device, a plurality of sliding pieces are screwed on the upper surface of the outer peripheral portion of the disk-shaped substrate below the attachment mounting portion, and the sliding piece and the inner surface of the upper flange of the attachment mounting portion are screwed. A sliding surface was formed between them.

[0005] If the sliding piece of the reaction force rotating device wears due to long-term use of various attachments such as a crushing device and a cutter device, the contact pressure between the sliding piece and the inner surface of the upper flange of the attachment mounting portion decreases, and the sliding pressure decreases. If the frictional resistance of the moving surface is reduced and the holding force in the stationary state is reduced, and further a partial gap is generated between the sliding surfaces, the crushing device, the cutter device, and the like may be rattled. . Therefore, in order to maintain good operation of the crushing device, the cutter device, and the like, it is necessary to replace the worn sliding piece. In addition, the inner surface of the flange of the attachment mounting portion is inevitably worn and damaged by sliding, and replacement of the welded flange is a great economic burden.

[0006]

SUMMARY OF THE INVENTION In view of the foregoing, the present invention suppresses a decrease in a stationary holding force due to abrasion of a sliding piece and the occurrence of play due to a partial gap of a sliding surface, and An object of the present invention is to secure reliable operation of various attachments, such as extending a replacement period of a sliding piece, and to improve durability and economy.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a disk provided at a lower portion of an attachment mounting portion 2 for mounting various attachments such as a crushing device and a cutter device to a shovel machine. The substrate 6 is housed in an attachment mounting portion 3 made of a bottomed cylindrical body having a ring-shaped flange 13 on the upper portion, and the disk-shaped substrate 6 below the attachment mounting portion and the attachment mounting portion 3 slide. In the reaction force rotation device of the shovel machine attachment pivotally mounted while rotating,
A reaction force rotating device of a shovel machine attachment comprising a ring-shaped slide plate 12 provided with a means for adjusting a contact pressure of a sliding surface between the disk-shaped substrate 6 and the ring-shaped flange 13. The reduction of the contact pressure due to the wear of the sliding part is compensated by the adjusting means of the slide plate to secure the static state holding force of the crushing device, the cutter device, etc. Supplementing and preventing rattling of the crushing device and cutter device, etc., while maintaining stable and reliable operation of the crushing device and cutter device for a long time,
The replacement period of the sliding piece or the slide plate was extended, and the durability and economy of the entire apparatus were improved. Furthermore, eliminating the wear and damage of the inner surface of the flange of the attachment mounting part,
Also in this aspect, the durability and economy of the crushing device, the cutter device and the like have been improved.

That is, the present invention has solved the respective problems of the following conventional reaction force rotating device by the following constitution. (1) A slide plate 12 is provided between the sliding portion 11 on the upper surface of the outer peripheral edge of the disc-shaped substrate 6 below the attachment mounting portion and the inner surface of the flange 31 above the attachment mounting portion. Sliding with 11 eliminates the wear and damage of the existing flange inner surface,
The durability of the attachment mounting portion to which the crushing device or the cutter device is fixed is improved. (2) Since the slide plate is formed in a ring shape and the slide plate is provided with a means for adjusting the contact pressure of the sliding surface, it is possible to correct the decrease in the contact pressure due to the wear of the sliding surface. This makes it possible to suppress a decrease in the holding power of the device or the like in the stationary state and the occurrence of rattling, thereby improving the stability and durability of the device. (3) The contact pressure of the ring-shaped slide plate 12 is adjusted by rotating a plurality of adjustment screws 13 attached to the flange 31 of the attachment mounting portion, so that the static state holding force of the crushing device, the cutter device, or the like is maintained. Correction and suppression of occurrence of backlash can be performed easily and reliably. (4) By dividing the ring-shaped slide plate 12 into a replaceable form, it is possible to replace a slide plate that has been worn or deformed beyond the adjustable limit, thereby enabling long-term use of the device.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a crushing device provided with a reaction force rotating device of the present invention, and FIG. 2 is an attachment mounting portion and an attachment mounting portion for exposing the inside of the reaction force rotating device of the embodiment of the present invention. FIG. 3 is a cross-sectional view showing a sliding portion of the reaction force rotating device in an enlarged scale, and FIG. 4 is a plan view of an example of a ring-shaped slide plate.

As shown in FIG. 1, a reaction force rotating device 1 of the present invention comprises an attachment mounting portion 2 for mounting an attachment such as a crushing device or a cutter device to a shovel machine, and an attachment mounting portion 4 for attaching an attachment body 4 to an attachment. The apparatus comprises an attachment mounting section 3 mounted on the section 2 and both of them are pivotally mounted by sliding.

As shown in FIG. 2, the reaction force rotating device of the present invention comprises an attachment mounting portion 3 having a bottomed cylindrical body having a ring-shaped flange 31 at an upper portion, and an attachment such as a crushing device and a cutter device. A swivel joint 7 is used to pivotally attach a disk-shaped substrate 6 below the attachment attachment portion for attachment to the device.

The attachment mounting portion 2 has two support plates 9 for supporting two mounting pins 8 for mounting a crushing device, a cutter device or the like on a shovel machine on a disk-shaped substrate 6.
The swivel joint 7 is attached to an auxiliary plate 10 connecting them, and is attached to the attachment mounting portion 3. The sliding portion 1 is provided on the upper surface of the outer peripheral edge of the disk-shaped substrate 6.
1 is welded or screwed in a ring shape.

Disc-shaped substrate 6 below attachment attachment portion
Is mounted in an attachment mounting portion 3 of a bottomed cylindrical body having a ring-shaped flange 31 at an upper portion, and a sliding portion 11 provided on an upper surface of an outer peripheral edge and a ring-shaped sliding plate 12 provided in sliding contact therewith. And constitute a sliding surface.

As shown in FIG. 3, the ring-shaped slide plate 12 is formed into a circular shape by pushing a plurality of adjusting screws 13 provided on the upper flange 31 of the attachment mounting portion and its protruding end portions 13a into the concave holes 12 '. It is pressed with a contact pressure against a sliding portion 11 provided on the upper surface of the outer peripheral edge of the plate-like substrate.

FIG. 4 shows another embodiment relating to a link-shaped slide plate. A ring-shaped slide plate 12 has a plurality of slide pieces so as to be exchangeable in the reaction force rotating device 1. 12
When divided into a to 12i and they are arranged adjacent to each other at their ends, the structure functions as an integrated slide plate. Reference numeral 12 'denotes a concave portion, and the adjusting screw 13
Is pushed in.

[0016]

According to the present invention, the following excellent functions and effects are exhibited. (1) By providing a slide plate between the inner surface of the upper flange of the attachment mounting portion and the slider, the abrasion and damage of the inner surface of the flange, which has occurred with the conventional reaction rotating device of the shovel machine attachment, are eliminated. However, the durability and economy of the device were improved. (2) The contact pressure between the slide plate 12 and the slide portion 11 on the upper surface of the outer peripheral edge of the disk-shaped substrate below the attachment mounting portion can be uniformly adjusted over the entire slide surface, and a crushing device or cutter caused by wear of the slide plate. It is possible to correct the decrease in the holding force in the stationary state of the apparatus and to prevent the apparatus from rattling due to the gap generated between the sliding surfaces. Further, since the wear amount of the slide plate 12 or the sliding portion 11 can be easily compensated by rotating the adjusting screw, the replacement period of the slide plate and the sliding surface can be extended, and the durability and economy of the device can be improved. It is. (3) In a structure in which the slide plate is divided and replaced, the device can be used for a longer period of time by replacing the slide plate worn beyond the adjustment limit.

[Brief description of the drawings]

FIG. 1 is a perspective view of a crushing device according to an embodiment of a reaction force rotating device of the present invention.

FIG. 2 is a sectional perspective view of an embodiment of the reaction force rotating device of the present invention.

FIG. 3 is a detailed enlarged cross-sectional view of a sliding portion according to an embodiment of the present invention.

FIG. 4 is a plan view of a ring-shaped slide plate according to the embodiment of the present invention.

[Explanation of symbols]

1: Reaction force rotation device 2: Attachment mounting part 3: Attachment mounting part 4: Attachment main body part 5: Work arm 6: Attachment mounting part board 7: Swivel joint 8: Mounting pin 9: Mounting pin support plate 10: Support Plate reinforcing plate 11: Sliding portion 12: Sliding plate 12 ': Concave hole portions 12a to 12
i: Sliding piece 13: Adjusting screw 13a: Tip end of adjusting screw 13 31: Flange

Claims (3)

[Claims] 1. A disk-shaped substrate provided at a lower portion of an attachment mounting portion for mounting various attachments such as a crushing device and a cutter device to a shovel machine, and an attachment mounting portion comprising a bottomed cylindrical body having a ring-shaped flange at an upper portion. In the reaction force rotating device of the shovel machine attachment, the disc-shaped substrate under the attachment mounting portion and the attachment mounting portion are pivotally mounted on the attachment mounting portion while rotating. A reaction force rotating device for a shovel machine attachment, wherein a ring-shaped slide plate provided with a contact pressure adjusting means for a sliding surface is provided between the ring-shaped flange and the ring-shaped flange. 2. A reaction force rotating device for an excavator machine attachment according to claim 1, wherein the slide plate is attached to a ring-shaped flange via a contact pressure adjusting means on a sliding surface. 3. The ring-shaped slide plate is divided into a plurality of exchangeable shapes.
Or the reaction force rotating device of the shovel machine attachment according to 2.