JPH0340086Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

In this invention, for example, in order to rotate the tilling shaft of a rotary tiller in both forward and reverse directions, two input shafts protrude outward from the transmission case, and power is selectively transmitted to these two input shafts. This invention relates to a safety cover that covers a two-axis type input shaft.

[Conventional technology]

As a well-known rotary tiller, in order to rotate the tiller shaft in the down-cut direction or the up-cut direction, two input shafts are protruded outward from the transmission case in close parallel to each other without using the transmission changeover means of the transmission. There is a system in which the rotary power is selectively connected to these two input shafts from the output shaft of the tractor to rotate the tilling shaft in the forward or reverse direction. The two input shafts are covered with a cover at the upper part in the axial direction to prevent danger.

[Problem that the invention attempts to solve]

By the way, of the two input shafts, the input shaft that is not receiving input is idling in the opposite direction to the shaft that is receiving input, and has a spline groove carved on its circumference. , it was easy for other objects to get wrapped around it, and it was dangerous to just cover the upper part in the axial direction.

[Means to solve the problem]

The present invention was devised to solve the above-mentioned problem, and includes a cover body that simultaneously covers the outer circumferences of the two input shafts in the axial direction, which is removably attached to the transmission case. By fixing the front cover that covers the front end of one input shaft and rotating it 180 degrees at the attachment/detachment position of the cover body to the transmission case, the outer periphery of the two input shafts can be fixed. and the front side of one of them is always covered with a front cover.

[Effect]

With the above configuration, the safety cover of the present invention simultaneously covers the outer peripheries of the two input shafts in the axial direction, and
Since it also covers the front side of the idling shaft that is not being inputted, it prevents other objects from wrapping around the idling shaft. Also,
When selecting the input axis and connecting the input joint, the safety cover can be easily replaced.

【Example】

Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 is a front view of the safety cover, Fig. 2 is a side view of the same, Fig. 3 is a front view of the input shaft of the rotary tiller and the safety cover mounting seat, Fig. 4 is a side view of the mounting seat, and Fig. 4 is a side view of the mounting seat. In Figures 1 and 2, reference numeral 1
is a safety cover, and this safety cover 1 is fixed to an oval-shaped outer cover 2 that covers the outer circumferences in the axial direction of the two input shafts 5 and 6 shown in FIG. 3, and to the front side of the outer circumference cover 2. It consists of a half-moon-shaped front cover 3, and the outer cover 2 has four mounting holes 4 on the top and bottom.
The holes are drilled in symmetrical positions. The input shafts 5 and 6 protrude outward from a transmission case of a rotary tiller (not shown) in parallel and close to each other, and have spline grooves cut on their outer peripheries. For the input shafts 5 and 6, the safety cover 1 simultaneously covers the outer periphery of both input shafts 5 and 6 with its outer periphery cover 2, and
The front cover 3 covers the front end of one of the input shafts 5 and 6, and when rotated 180 degrees in the vertical direction, covers the front end of the other input shaft. On the other hand, the mounting seat 7 for attaching the safety cover 1 to the mission case has a fixing portion 8 fixed to the mission case as shown in FIGS. 3 and 4.
and a safety cover attachment part 9 which is bent vertically forward from the upper part of the fixed part 8 and is curved to have almost the same shape as the upper inner circumferential surface of the outer circumferential cover 2 of the safety cover 1. The safety cover mounting portion 9 has threaded holes 10, 10 that correspond to the two upper mounting holes 4 of the safety cover 1, and a nut 1 is inserted into the inner surface of the threaded holes 10, 10.
1 and 11 are fixed by welding. and,
The upper inner circumferential surface of the outer circumferential cover 2 of the safety cover 1 is inserted into the attachment hole 4 so as to cover the safety cover attachment part 9.
and the screw hole 10, and insert the grip screw 12 consisting of the grip part and the bolt into the mounting hole 4 and the screw hole 10,
The safety cover 1 is attached to the mounting seat 7 by screwing into the nut 11. In the safety cover for the two-shaft input shaft configured in this way, with the safety cover 1 attached to the mounting seat 7 via the grip screw 12, the input shaft 5 or the side not covered by the cover 3 is attached. Connect to 6 so that power is transmitted from the output shaft (PTO shaft) of the tractor via the universal joint and transmission shaft. Then, the tilling shaft of the rotary tilling device rotates in either forward or reverse direction to perform tilling work. At this time, the axial outer peripheries of the input shafts 5 and 6 are covered with the outer periphery cover 2, and the input shafts 5 and 6 to which power is not transmitted are
Since the front side of the shaft 6 is covered by the front cover 3, other objects do not wrap around the input shaft 5 or the shaft 6, which idles in the opposite direction to the input shaft to which power is transmitted. When switching the power transmission to the input shafts 5 and 6,
First, disconnect the joint on the output side from the input shaft 5 or 6, then loosen the grip screw 12 and remove the safety cover 1 from the mounting seat 7.
Rotate once to align the mounting holes 4, 4, which have been on the lower side, with the screw holes 10, 10 of the mounting seat 7, and then
2, and connect the output side to the input shaft whose front end side is exposed. By doing so, the front side of the other input shaft is covered by the front cover 3, making it safe.

[Effect of the idea]

As explained above, according to the safety cover for the dual-shaft input shaft of the present invention, the safety cover is configured to always cover the outer periphery of the two input shafts and also to cover the outside of the tip of the input shaft on the side where power is not transmitted. When switching the power transmission to the input shaft, the cover can be easily removed by removing the safety cover, rotating 180 degrees around the input shaft, and fixing it. Safety is ensured by always covering the front of the side. Further, the connection operation from the output shaft side to the input shaft on the power transmission side can be easily performed, and the power transmission can be quickly switched.

[Brief explanation of the drawing]

Figure 1 is a front view of the safety cover according to the present invention, Figure 2 is a sectional view taken along line A-A in Figure 1, Figure 3 is a front view of the input shaft and safety cover mounting seat, and Figure 4 is the mounting seat. FIG. 1...Safety cover, 2...Outer cover, 3...
Front cover, 4...Mounting hole, 5, 6...Input shaft,
7...Safety cover mounting seat, 8...Fixed part, 9...
Safety cover mounting part, 10... screw hole, 11... nut, 12... grip screw.

Claims (1)

[Claims for Utility Model Registration] In a two-shaft type input shaft in which two input shafts are protruded outward from a transmission case in close parallel to each other, the outer peripheries of the two input shafts in the axial direction are simultaneously A cover body is provided to be detachably attached to the transmission case, and a front cover that covers the front end of one of the input shafts is fixed to the front side of the cover body. Safety of a two-shaft type input shaft characterized by being configured so that the outer periphery of the two input shafts and the front side of one of them are always covered with a front cover by fixing them in a rotated state. cover.