JPS6020211B2 - Input shaft bearing body in transmission mechanism of power agricultural machinery - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an input shaft bearing body in a transmission mechanism of a power agricultural machine such as a tractor.

In the gas case near where this input shaft bearing body is inserted,
The counter gear for front wheel drive is pivotally supported by a counter gear pin that is bridged and fixed between two partition walls installed inside the gear case. This was extremely troublesome as it required inserting a retaining pin into the partition wall. Therefore, the present invention aims to provide an input shaft bearing body structured so that the counter gap pin can be easily fixed. An input shaft bearing part lb that supports the rear part, and a drum insertion part lc that can be inserted into the daughter-in-law insertion hole 4b of the partition wall 4a of the gear case 4 that houses the transmission mechanism 3.
and a support that rotatably supports an input bearing body 1 having an iron inserting flange portion ld having a larger outer diameter than the iron inserting portion lc, and a shaft gear 6 which is driven by the transmission mechanism 3 and provided to extract power. and the iron part 7a that fits into the gas case 4.
, the head 7b and the iron inserting flange ld of the input bearing body 1 which is provided on the head 7b and is inserted into the gear case 4 to prevent rotation and to prevent it from coming off in the forward direction. This is an input shaft bearing body in a transmission mechanism of a power agricultural machine having a counter gap pin 7 having a notch 7c. Next, the specific structure will be explained based on one embodiment shown in the drawings. As shown in FIG. An input shaft bearing body 1 is formed in which the iron inserts lc are formed on the same core and the disc-shaped iron inserts lc are eccentric with respect to the cylindrical shape, and the iron inserts lc
A slightly larger iron insert flange ld is provided, and this iron insert flange l
As shown in FIG. 2, a locking portion le is provided on one side of d.

On the other hand, the gear case 4 that houses the main clutch 2 and transmission mechanism 3 of the tractor is provided with a partition wall 4a that separates the main clutch 2 and transmission mechanism 3.
A circular bale insertion hole 4b into which the iron insertion part lc of the input shaft bearing body 1 can be inserted is provided in the partition wall 4a.

A power output gear 5 has one end supported on a small partition wall 4c further provided at the lower part of the gear case 4 to drive, for example, the front wheels of this tractor, and a spline boss portion 5a at the other end projects from the gear case 4. A counter gear 6 is supported like this and always meshes with this scale force extraction gear 5.
The counter gear pin 7 is fitted into the counter gear pin 7 through a bearing 8 so as to rotate freely, and the counter gear pin 7 has a small diameter iron part 7a and a slightly large diameter head 7 at the front and rear of the counter gear 6.
In addition, a notch 7c is formed in the head 7M, and the carrying-in portion 7a of the counter gap pin 7 is inserted into the iron entry hole 4d of the small partition wall 4c, and the iron hole provided in the middle partition wall 4a is After inserting the heads 7b into the entrance holes 4e, the input ball bearing body 1 is then inserted.
By inserting the locking portion lc into the iron insertion hole 4b while aligning the locking portion le with the notch 7c of the counter gear pin 7, the insertion flange portion ld will be inserted into the partition wall 4a via the shim 9. At the same time, the notch 7c is positioned in contact with the front side of the notch 7c.
Since the locking portion le engages from the front, the counter gear pin 7 is prevented from moving in the vertical direction and rotating around the center of the ball. Note that the notch 7c may have the shape of a concave groove on the front instead of the crescent shape on the front as shown in the illustrated example.

Further, in the embodiment shown in FIG. 1, a shim 10 is interposed between the front side of the small partition wall 4c and the counter gap pin 7, and a circle ring 11 is attached to the European insertion part lc. There is. The input shaft 12, which is fitted with iron into the input shaft bearing body 1, has its front part supported by a bearing 13 on the main body of the main clutch 2, and the input shaft 12 is supported by a bearing 14 which is iron-mounted on the rear part of the input shaft bearing part lb. The front part of the main shaft 15 of the transmission mechanism 3 is mounted on a bearing 16 at the rear of the input shaft 12.
The counter gear 1 is supported by the main shaft 15 and meshes with the change gear group 17, which is freely fitted with iron only for the vertical tank movement.
The front end of the sardine force extraction shaft 19 with 8 freely rotated is the bearing 2.
A clutch gear 21 is rotatably supported on the river trowel input shaft bearing body 1 and can be engaged and disengaged from the counter gear 6 by sliding only in the axial direction of the force extraction shaft 19. input, change the rotation of the input pinwheel 12, gear group 17, counter gear 1
The power take-off shaft 19 is rotated by a speed change mechanism 3 consisting of a group of gears such as 8 or the like. 0 Since the input shaft bearing body in the transmission mechanism according to the present invention is constructed as described above, the counter gear pin 7 with the counter gear 6 inserted therein is iron-inserted into the small partition wall 4c and the middle partition wall 4a, and the input shaft bearing body is constructed as described above. If the shaft bearing body 1 is inserted into the partition wall 4a,
The locking portion le of the input shaft bearing body 1 engages with the notch 7c of the counter gap pin 7, and the accidental movement of the counter gap pin 7 is immediately inhibited, thus preventing the counter gap pin 7 from being fixed. Place something like a retaining pin on the middle partition wall 4a of this narrow gear case 4 or the small partition wall 4.
The steps to insert into c are completely unnecessary.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of a gear case of a tractor to which the present invention is applied, and FIG. 2 is a sectional view taken along the line A-A in FIG. Description of symbols 1... Input shaft bearing body, la...
...Sleeve guide part, lb...Input shaft bearing part, lc
...Taiwan insertion part, ld...Taiwan insertion part, le
...Locking part, 2...・Main clutch,
3... Speed change mechanism, 4... Gear 0 case, 4
a...Inner partition wall, 4b...Iron insertion hole, 4
c...Small partition wall, 5...Power take-off gear, 5a...Spline post, 6, 18...Counter gear, 7...Counter gap pin , 7a...
...Iron part, 7b...Head, 7c...Notch, 8, 13, 14, 16, 250...Bearing, 9
, 10...Shim, 11...○Ring, 12...
Input shaft, 15...Main shaft, 17...Change gear group, 19...Power extraction shaft, 21...Clutch gear. Figure 1 Figure 2

Claims (1)

[Claims] 1 Fits into the input shaft bearing part 1b that pivotally supports the rear part of the input shaft 12 that inputs the power of the main clutch to the transmission mechanism 3, and into the insertion hole 4b of the partition wall 4a of the gear case 4 that houses the transmission mechanism 3. The input bearing body 1 includes a fitting part 1c that can be inserted and a fitting part 1d having a larger outer diameter than the fitting part 1c, and a counter gear 6 that is driven by the transmission mechanism 3 and provided to take out power. A support part that rotatably supports the gear case 4, a fitting part 7a that fits into the gear case 4, a head part 7b, and a head part 7.
Input bearing body 1 provided in b and fitted into gear case 4
An input shaft in a transmission mechanism of a power agricultural machine, which has a counter gear pin 7 having a notch 7c that engages with the above-mentioned fitting flange 1d to prevent rotation and to prevent it from coming off in the forward direction. Bearing body.