JPS6041091Y2 - Stem culm shredding device - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention uses two rotating shafts that are integrally attached with a large number of disc-shaped cutting blades spaced apart in the axial direction, and that are approximately parallel to each other. The outer peripheral edges of the cutting blades are constructed so as to overlap each other, an input pulley is attached to one of the rotating shafts, and both rotating shafts are interlocked and connected to each other via a gear attached to a shaft end outside the case. Further, the one gear is rotatably attached to the case, and a rotating shaft fitted inside the gear is configured to be slidable in the axial direction, and a nut is screwed onto the shaft end of the slidable rotating shaft. The present invention also relates to a stem culm shredding device that is configured so that the clearance between the cutting blade and the opposing cutting blade can be adjusted from outside the case.

[Prior art]

The present applicant had previously developed a device for cutting stem culms in which the blade clearance of the stem culm shredding device could be easily adjusted from the outside of the case.
No. 73089 was filed (see Japanese Utility Model Publication No. 17509/1983).

In this structure, the gear of the driven side rotating shaft is rotatably attached to the case, the driven side rotating shaft is configured to be able to adjust the clearance, and the adjustment nut is prevented from rotating using a so-called double nut. It is in full swing.

[Problem that the invention attempts to solve]

Since the structure uses a double nut to prevent rotation, the shaft length becomes long and the shaft end protrudes significantly from the outside of the case, which is dangerous, and there is a drawback that a cover must be provided to prevent wrapping around the protruding shaft part. Ta.

The present invention aims to shorten the protruding shaft portion by devising the anti-rotation structure of the adjustment nut, thereby eliminating the need for a wrapping prevention cover.

[Means for solving problems]

The characteristic structure of the present invention to achieve the above object is that the gear of the drive-side rotation shaft equipped with the input pulley is rotatably mounted to the case, so that the clearance of the drive-side rotation shaft can be adjusted. , the input pulley is provided with an engagement recess into which the adjustment nut is fitted in a manner that is relatively unrotatable, and the manual pulley is attached to the gear or a member connected thereto in a manner that it is not relatively rotatable via a bolt; That's true.

[Effect]

By fitting the adjustment nut to the input pulley and fixing the manual pulley to the gear, the nut can be prevented from rotating, and the input pulley is used to tighten the nut.
There is no need to screw a rotation stopper for the adjustment nut onto the shaft, and the shaft can be shortened only at the rotation prevention nut portion.

[Effect of idea]

The length of the protruding shaft part including the adjustment nut is shortened,
This made it possible to eliminate the need for an anti-wrapping cover.

〔Example〕

As shown in Fig. 3, a pipe 1a whose internal shape is hexagonal.
A circular blade mounting plate 1b is welded to the pipe 1a, and a cutting blade 1 having a notch a slightly larger than the outer diameter of the pipe 1a formed in the radial direction is fitted onto the pipe 1a to form the blade mounting plate. 1b, the rear edge of the notch a in the direction of rotation is machined, and as shown in FIG. Then, the rotary blade body A is fitted onto the hexagonal rotating shafts 2 and 3.

It consists of B.

In the rotary blade body A, threaded portions are formed at both ends of the rotating shaft 2, and a cylindrical member 2A is screwed into one end of the threaded portion, and an annular member is formed near the other end. The cutting blades are integrally fixed to the rotating shaft 2 by welding the member 2B and tightening the cylindrical member 2A.

The outer peripheral edges of the cutting blades 1, 1 are arranged such that two rotating shafts 2, 3 integrally attached to the large number of cutting blades 1 are spaced apart from each other in the axial direction, and are approximately parallel to each other and facing each other. Wrap the bearing 5 in the axial direction and attach it to the cutter case 4.
..., and the shafts 2 and 3 are interlocked and connected by a pair of gears 6.7 that mesh with each other, and
One of the small diameter gears 6 is fitted onto the rotating shaft 2 so that it can only slide freely in the axial direction, and the gear 6 is mounted on the bearing 5 so that it can only rotate freely, and the other large diameter gear 7 It is fixed to the rotating shaft 3 with a bolt 9 via a stopper member 8.

A flange member 10 is provided on the outer end side of the small diameter gear 6.
are integrally connected, and the shaft end of the rotating shaft 2 is connected to the threaded part 2.
A, a part thereof is made to protrude outward from the connecting member 10, and the protruding threaded portion 2a is used for positioning in the axial direction of the rotary shaft 2 with reference to the gear 6. Nuts 11 are screwed together, and bolts 13 are screwed into sheet metal input pulleys 12 to the connecting member 10 at equal pitches around the gear rotation axis.
- When the protruding screw 2a is passed through the rotation center of the manual pulley 12, an engaging recess C is provided in which the nut 11 is fitted so as not to be relatively rotatable. The machine is equipped with a stem culm shredding device.

The shape of the cutting blade 1 can be variously modified, such as a substantially perfect circular shape or a shape with a wavy peripheral edge, and these are collectively referred to as the disk-shaped cutting blade 1.

[Brief explanation of drawings]

The drawings show an embodiment of the stem culm shredding device according to the present invention.
The figure is an overall cross-sectional plan view, FIG. 2 is a sectional view taken along the line ■--■ in FIG. 1, and FIG. 3 is a detailed view of the rotary blade. 1... Disc-shaped cutting blade, 2, 3... Rotating shaft, 4... Case, 6, 7... Gear,
10... Continuous member, 11... Nut,
12...Input pulley, 13...Volt.

Claims (1)

[Scope of utility model registration request] A large number of disc-shaped cutting blades 1 spaced apart in the axial direction...
The two rotating shafts 2 and 3, which are integrally energized, are installed approximately parallel to each other by wrapping the outer peripheral edges of the cutting blades 1 and 1, and attaching the input pulley 12 to the one rotating shaft 2. Attach the
The two rotating shafts 2 and 3 are interlocked and connected to each other via a gear 6.7 mounted on a shaft end outside the case 4, and further, the one gear 6 is rotatably mounted on the case 4, A rotary shaft 2 fitted inside the gear 6 is configured to be slidable in the axial direction, and a nut 11 is attached to the shaft end of the freely slidable rotary shaft 2.
In the stem culm shredding device, the drive-side rotating shaft 2 to which the input pulley 12 is mounted is configured such that the clearance between the opposing cutting blade and the opposing cutting blade can be adjusted from outside the case.
A gear 6 is rotatably attached to the case 4, so that the clearance of the rotating shaft 2 on the drive side can be adjusted, and the adjusting nut 11 is fitted to the input pulley 12 so that it cannot rotate relatively. A thin stem culm characterized in that an engaging recess C is provided, and the manual pulley 12 is attached to the gear 6 or a member 10 connected thereto via bolts 13 so as not to be relatively rotatable. disconnection device.