JPS6125603Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a tilling rotor of a tilling work machine.

Conventionally, tillage machines have a rotor mounting flange on the protruding end of the rotor drive shaft of the machine body.
A screw hole is drilled in the flange, and a flange with a through hole drilled at the end of the tilling rotor is provided protrudingly, and both holes are aligned, the flanges are butted, and a bolt is screwed into the screw hole. The tilling rotor was connected to the main body of the work machine.

However, in this structure, the rotor is heavy, making it difficult to align the holes and the space for inserting the bolts is narrow, so tools such as a ratcheted box spanner are required to attach and remove the bolts.
A great deal of effort and time was required to attach and detach the rotor, resulting in poor work efficiency.

The present invention aims to eliminate the above-mentioned conventional drawbacks, provide a rotor mounting structure that allows the rotor to be easily attached and detached, and improve the work efficiency.

The present invention provides a protruding shaft with an engagement groove bored at its tip on the abutting surface of one flange,
The other flange is provided with a through hole through which the protruding shaft passes freely, and the protruding shaft is provided with a removable locking member in its engagement groove, and a locking member is externally fitted thereto. shall be.

The above-mentioned tilling machine is a working machine that is connected to the rear of a tractor and receives power from the tractor to perform various works such as tilling and plowing.

The above-mentioned tilling rotor refers to a tilling rotor and a puddling rotor having tilling claws.

Embodiments of the present invention will be described below based on the drawings.

In the diagram, A is a tractor, and B is 3 behind tractor A.
This is a tilling machine that is connected via a point linkage mechanism C so that it can move up and down.

The tilling machine B is composed of a main body b and a tilling rotor 1, and the driving force of an output shaft a protruding rearward from the tractor A is transmitted to the tilling rotor 1 via a transmission mechanism, and the rotor 1 is set to rotate.

The tilling rotor 1 has tilling claws 1b bolted to the hollow rotor shaft 1a at appropriate intervals, and flanges 3 with through holes 2, 2' for connection at both ends of the rotor shaft 1a. 3' is provided, and the flanges 3, 3' are connected to the main body.

The main body b is made up of a roughly shaped frame with a rotor cover 4 attached, 5 is a chain case forming one side of the frame, and 6 is a bearing case fixed with bolts 12 to the lower end of the other side. be.

A drive shaft 7 whose one end protrudes from the case 5 is rotatably supported at the lower end of the chain case 5.

A rotor connecting flange 8 is integrally provided on the protruding end of the drive shaft 7, and a sprocket 18 is attached to the end inside the case 5 by spline fitting, so that the driving force of the output shaft a of the tractor A is decelerated. The power is transmitted through transmission mechanisms such as mechanism D and chain E to rotate the drive shaft 7.

The rotor connecting flange 8 is provided with protruding shafts 9 extending inwardly at equal intervals on the same circumference. The protruding shaft 9 has a screw cut into one end thereof, and is screwed and fixed to the flange 8, one of which protrudes longer than the other.

The protruding shaft 9 has an annular engagement groove 10 formed at a certain position from the flange 8 and has a pointed tip.

On the other hand, a bearing shaft 11 having a rotor connecting flange 8' formed at its end is rotatably supported by the bearing case 6 so that the flange 8' faces the flange 8 of the drive shaft 7.

Screw holes for connecting the rotor 1 are bored in the flange 8' at equal intervals on the same circumference.

The tilling rotor 1 is connected by having its flanges 3, 3' abut against the flanges 8, 8' of the working machine main body b, respectively.

The flanges 3' and 8' are connected and fixed by bolts 12 with the screw holes and through holes 2' aligned, and the flanges 3 and 8 are connected by inserting the protruding shaft 9 into the through hole 2.

The protruding shaft 9 has an engaging groove 10 protruding from the flange 3, and a locking tool 1 is attached to the protruding portion.
Fit 3 on the outside.

The locking tool 13 is composed of a main body 13', a freeb 14, a spring 15, and a ball main body 16. The main body 13 is formed into a cylindrical shape with a through hole for loosely fitting with the protruding shaft 9, and has a mortar-shaped ball receiver 113a recessed on its outer peripheral surface, and a spring 1.
The receiving portions of No. 5 are formed in stages.

The sleeve 14 is slidably fitted around the outer periphery of the main body 13', and has annular pressing protrusions 14a and relief parts 14b of the ball body 16 on its inner surface. 14a
is biased so as to face the ball receiving portion 13a of the main body 13'.

The ball body 16 is inserted into the ball receiving portion 11 of the main body 13'.
3a, a part of which is supported by the main body 113'
It can freely enter and exit through the through hole.

In such a locking tool 13, when the pressing protrusion 14a of the sleeve 14 faces the ball receiving part 13a due to the elastic force of the spring 15, the ball body 16 is pressed by the pressing protrusion 14a, and the ball body 16 is pressed against the inner surface of the main body 13'. Some of them stand out.

Further, by sliding the sleeve 14 against the elastic force of the spring 15 so that the relief portion 14b of the sleeve 14 faces the ball receiving portion 13a, the ball body 16 can be retracted from the inner surface of the main body 13'.

Therefore, when installing the rotor 1 of the tillage machine B, the bearing case 6 is connected to the flange 3' of the rotor 1, and the other flange 3 is connected to the rotor connecting flange 8 through the through holes of both flanges 3 and 8. 2 and the protruding shaft 9 are fitted and abutted against each other, and the locking tool 13 is engaged with the protruding portion of the protruding shaft 9.

The locking tool 13 slides the sleeve 14 against the spring 15 and inserts the protruding shaft 9 into the through hole of the main body 13' in a state where the ball body 16 can be retracted from the inner surface of the main body 13'.
is inserted, and the sleeve 14 is again slid by the elastic force of the spring 15, and the ball body 16 is attached to the main body 1.
3' protrudes from the inner surface and is engaged with the engagement groove 10 of the protruding shaft 9 and fixed.

Also, from the installation state of the locking tool 13, the sleeve 1
4 is slid against the bias of the spring 15, the ball body 16 and the engagement groove 10 of the protruding shaft 9 are disengaged, and the locking tool 13 is removed from the protruding shaft 9.

After attaching the locking tool 13 to the protruding shaft 9, the bearing case 6 is fixed to the frame with bolts 17.

Since the present invention is constructed as described above, the locking tool can be freely fitted onto and removed from the projecting shaft by disengaging the engagement member between the locking member and the engagement groove of the projecting shaft. The protruding shaft makes it easy to align the flange, allowing the rotor to be attached to and removed from the drive shaft easily and quickly.

Furthermore, since the protruding shaft and the through hole of the abutted flanges fit together, the connection is reliable and strong.

Thus, the intended purpose can be achieved.

[Brief explanation of the drawing]

Figure 1 is a side view showing the tiller connected to the rear of the tractor, Figure 2 is a partially cutaway front view of the tiller, and Figures 3 and 4 show the main parts. It is an enlarged sectional view. In addition, in the figure, B...Plowing work machine, b...Work machine main body, 1...Plowing rotor, 2...Through hole, 3...
... flange, 7 ... drive shaft, 8 ... rotor connection flange, 9 ... protruding shaft, 10 ... engagement groove, 13 ...
...Latching tool, 16...Ball body.

Claims (1)

[Scope of utility model registration request] A tilling work machine in which a mounting flange for a rotor drive shaft of the tillage work machine body is provided protrudingly, and a flange is provided protrudingly at the end of the tiller rotor, and the flanges are butted and connected to drive the rotor, A protruding shaft with an engagement groove bored at its tip is provided on the mating surface of one of the flanges, and a through hole is bored in the other flange through which the protruding shaft freely passes, and the protruding shaft is provided with a through hole through which the protruding shaft freely passes. A tillage rotor mounting structure in which a locking tool equipped with a locking member that can be freely engaged and detached is fitted onto a matching groove.