JP4117590B2 - Gear assembly device for rotating shaft drive - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a driving gear assembling apparatus for a polygonal rotating shaft that is driven to rotate by meshing of driving gears.
[0002]
[Prior art]
Conventionally, in a driving gear attached to a polygonal bar type rotating shaft, the boss portion is subjected to polygonal broaching and interlocked and assembled by engagement with the polygonal rotating shaft.
[0003]
[Problems to be solved by the invention]
However, the polygonal machining of the shaft and the polygonal broaching of the boss part are difficult, and the outer diameter tolerance of the polygon rotation shaft and the inner diameter tolerance of the gear boss part of the polygonal shaft hole are increased. As a result, the assembly accuracy of the shaft and gear deteriorated, causing shaft misalignment.
Therefore, an object of the present invention is to solve the above problem with a simple configuration.
[0004]
[Means for Solving the Problems]
The present invention is a polygonal rotary shaft 5, a plurality of the 6 rotating blades 1, 2 provided, multi-angle spinning shaft 5, 6 gear for driving the one side of the 3, 4 for rotation of Hai稈cutter for attaching the in the gear assembly device, wherein one end portion of the polygonal rotary shaft 5, 6, bearing a multi angle rotation axis 5 and 6 provide a round shaft portion 8 which protrudes rather longer than the bearing 7 thickness, left and right the round shaft portion 8 together with configuring the polygonal rotary shaft 5, 6 of the same shape, the gear 3, the boss portion 4 to form a polygonal shaft hole 9 and Marujikuana 10, the shaft end portion of the polygonal rotary shaft 5, 6 the gear 3, 4 polygonal shaft hole 9 of the boss portion, and the configuration of each fitted so assembled gear rotary shaft drive comprising apparatus Marujikuana 10 of the boss portion in the round shaft portion 8.
[0005]
[Action and effect of the invention]
In order to assemble the gears 3 and 4 to the polygonal rotation shafts 5 and 6 , first, the round shaft portion 8 of the polygonal rotation shaft 5 is fitted to the bearings 7 and 7 of the support on the machine frame, and the polygonal rotation shaft 5 is attached. Mount it.
Next, the bosses of the gears 3 , 4 are fitted from the one ends of the polygonal rotation shafts 5 , 6 , and the round shaft holes 10 formed in the bosses of the gears 3 , 4 are formed into polygons protruding from the bearings 7. By fitting the rotary shafts 5 and 6 to the round shaft portion 8, the gear shafts 3 and 4 are attached with the shaft core accurately aligned by the fitting configuration of the round shaft and the round shaft hole which are easy to process. At the same time, the polygonal rotation shaft 5 is engaged with the polygonal shaft holes 9 of the gears 3 and 4 to make it possible to transmit power.
As described above, the assembly of the polygonal rotating shafts 5 and 6 and the gears 3 and 4 is performed by fitting the round shaft portion 8 and the round shaft hole 10 which can be formed with high accuracy with low cost processing. The distance between the shaft centers of the other gears meshed with the gears 3 and 4 can be maintained with high accuracy, and transmission can be performed efficiently.
Further, since the transmission of the gears 3 and 4 and the polygonal rotating shafts 5 and 6 is performed by fitting the shafts 5 and 6 with the polygonal shaft holes 9 formed in the bosses of the gears 3 and 4 , a key or a set screw is used. Compared with the transmission by, a large power transmission is possible.
[0006]
【Example】
Next, an example in which the present invention is applied to a hexagonal rotary shaft of a rejection cutter, which is an example of a polygonal rotary shaft, will be described with reference to the drawings.
The waste cutter that cuts the threshed waste into short pieces cuts the waste through close rotation between the rotary blades 1 and 2 arranged along a pair of polygonal rotation shafts 5 and 6 that face each other in parallel.
The polygonal rotary shaft 6 is formed in a hexagonal bar shape, and a plurality of rotary blades 2 and 2 having a large diameter and a small diameter are disposed at a predetermined interval, and is combined with a shaft end protruding outward from the cutter machine frame 11. A pulley 12 that receives driving force from the vehicle body is attached, and a small gear 4 is attached between the pulley 12 and the machine casing 11.
The polygonal rotary shaft 5 is also formed in a hexagonal bar shape, and the rotary blades 1, 1 and the scrapers 13, 13 are arranged corresponding to the rotary blades 2, 2, and the shaft ends projecting outward from the machine frame 11. Further, a large gear 3 that receives a driving force by meshing with the small gear 4 is attached. 7,7 is a bearing for supporting the multi-angular rotation shaft 5 and 6, as well as attached to the cutter unit frame 11 inner surface by the attachment members 14, the formed multi-angular rotation shaft 5 and 6 end The round shaft portions 8 and 8 are fitted.
The round shaft portions 8 and 8 have a round bar shape longer than the thickness of the bearings 7 and 7 to be mounted, and the round shaft portions 8 and 8 protruding from the thickness of the bearings 7 and 7 protrude from the machine frame 11.
[0007]
Large gear 3 forms a hexagonal axial hole 9 and Marujikuana 10 to the boss portion, the the round shaft hole 10 by fitting the round shaft portion 8 projecting from the machine frame 11, a multi-angular rotation It is attached to the shaft 5. In this case, the multi-angular shaft hole 9, the engaging fitted into hexagonal portion of the multi-angular rotation shaft 5 is interlocked with the rotational movement of the large gear 3 to the multi-angular rotation shaft 5. 15 is a bolt to secure the large gear 3 to the end of the multi-angular rotation shaft 5 at tightening.
Small gear 4, similarly to the large gear 3, are linked attached at multiple square shaft holes 9 and Marujikuana 10 formed in the boss portion to the multi-angular rotation shaft 6. 16 is a color, multi-angular said the rotary shaft 6 end pulley 12 attached to the pulley 12 and the small gear 4 by tightening the nut 17 by inserting between the small gear 4 multifaceted rotating shaft 6 It sticks to the end.
[0008]
In the above configuration, the assembled driving gear 3 and 4 to the multi-angular rotation shaft 5,6, the gear 3 and 4, as shown in FIG. 1, round shaft portions 8 and Marujikuana 10,10 It is attached by fitting.
Since the process of forming the circular member is easier and more accurate than the process of forming the hexagonal member, the above assembly is performed with the axes aligned with high precision.
In addition, the drive gear 3, 4 boss, multilateral shaft hole 9, 9 are also formed, the multi-square shaft holes 9 and 9 during the assembling, the multi-angular rotation shaft 5,6 Hexagon Engage with the rod part. The multilateral shaft hole 9, 9 a rotational movement of the multi-angular rotation shaft 6 or interlocked to the gear 4, or a rotational movement of the gear 3 which is provided to interlock the multifaceted rotating shaft 5, pairs even with precision is poor, catching the corner of multi-angle spinning shaft 5 and 6 as shown in FIG. 3, it is possible to reliably interlock the rotational movement.
[0009]
In addition, although a number is written in the claim section for the purpose of making the object of the drawing convenient, the present invention is not limited to the structure of the attached drawing by this entry.
[Brief description of the drawings]
FIG. 1 is a plan sectional view of a main part in an embodiment of the present invention.
FIG. 2 is an overall plan view of an embodiment of the present invention.
FIG. 3 is a side sectional view taken along line AA in FIG.
[Explanation of symbols]
1 rotary blade
2 rotary blade 3 gear
4 gears 5 polygonal rotation axis
6 Polygonal rotating shaft 7 Bearing 8 Round shaft 9 Polygonal shaft hole 10 Round shaft hole

Claims (1)

Polygonal rotary shaft (5), a plurality of rotating blades (6) (1), (2) is provided, the multi-angle spinning shaft (5), a gear for driving on one side of (6) (3), (4 In the rotary drive gear assembling device of the waste cutter, the polygonal rotary shafts (5), (6) are supported on one end of the polygonal rotary shafts (5) , (6). 7) round shaft portion which is from rather long protruding thickness (8) is provided, the round shaft portion polygonal rotating shaft of the right and left same shape (8) (5), together constituting (6), the gear (3), The boss portion of (4) is formed with a polygonal shaft hole (9) and a round shaft hole (10), and the gears (3) , (4 ) are formed at the shaft end portions of the polygonal rotation shafts (5) , (6). ) A rotary shaft driving gear assembling apparatus in which the polygonal shaft hole (9) of the boss portion and the round shaft hole (10) of the boss portion are fitted to the round shaft portion (8) , respectively .

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