JPH0413962Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a rotary shaft assembly device for supporting rotary teeth and receiving teeth in parallel in a straw cutter of parallel rotary tooth type.

As shown in Figs. 1 and 2, the above-mentioned rotary tooth parallel type straw cutter A has a rotating shaft 2 that rotates at high speed and a rotating shaft 2 that rotates at low speed in a machine frame 1 formed in the shape of a horizontally long machine casing. A rotary shaft 3 to be rotated is horizontally supported in parallel, a large number of circular saw-shaped rotary teeth 4 are supported in parallel on the rotary shaft 2 to be rotated at high speed, and the rotary shaft 3 to be rotated at low speed is supported horizontally. A large number of receiving teeth 5 are a combination of circular saw-shaped rotary teeth 4 and gear-shaped gear wheels 50...
are supported in parallel to face the rotary teeth 4..., and the straw culm, which is introduced from the open opening on the top side of the machine frame 1 in a sideways posture, is placed in parallel with the parallel rotary teeth 4... It is arranged to cut into a large number of cut pieces at once at each portion facing the receiving teeth 5.

Therefore, the rotating teeth 4... and the receiving teeth 5... in the straw cutter A of this form are usually the rotating shafts 2, 3.
The rotating shafts 2 and 3 are supported in parallel to each other.
The rotary teeth 4 and receiving teeth 5 are set in parallel, and the rotating shafts 2 and 3 are assembled to the machine frame 1 so that they are pivotally supported by the machine frame 1.

Therefore, when dealing with wear and tear that occurs on the rotating teeth 4..., receiving teeth 5..., remove the rotating shafts 2, 3 from the machine frame 1 and replace the rotating teeth 4..., receiving teeth 5... Then, move the rotating shafts 2 and 3 again to the machine frame 1.
The operation of assembling and supporting the shaft is required. Rotating teeth 4 are subject to severe wear and damage due to high speed rotation.
The rotating shaft 2 supporting the machine frame 1 in parallel is attached to the left and right side walls 1 of the machine frame 1, as shown in FIG. , 10, insert the left and right shaft ends of the rotating shaft 2 from the rear side of the machine frame 1 L.
A letter-shaped guide groove 6 is provided respectively, and the left and right ends of the rotating shaft 2 are fitted along the guide grooves 6 and pulled up to a predetermined position. The provided bearing support members 20, 20 are attached to the left and right side walls 1 of the machine frame 1.
0 and 10 with set bolts 21..., the shaft is mounted on the machine frame 1, and by removing the set bolts 21..., the rotating shaft 2 along with the bearing support member 20 is moved backward along the guide groove 6. (to the right in Figure 3) so that it can be pulled out from the machine frame 1.

However, with this method, when the rotating shaft 2, on which a large number of rotating teeth 4 are attached, is to be attached or detached from the machine frame 1, the operator lifts the rotating shaft 2 and holds both left and right end portions of the rotating shaft 2. It must be fitted together into the guide grooves 6, 6 formed on the left and right side walls 10, 10 of the machine frame 1, and the cutting action width is wide when a large number of rotary teeth 4 are installed. In the case of a large straw cutter, there is a problem in that it is difficult for one worker to attach and detach the heavy rotating shaft 2 to and from the machine frame 1, which is supported by lifting with both hands.

The present invention was developed to solve this problem, and the work of attaching and detaching the rotating shafts 2 and 3, on which a large number of rotating teeth 4 and receiving teeth 5 are mounted in parallel, to the machine frame 1 can be done by one person. The purpose is to provide new means to make it easier for workers.

In the present invention, as a means to achieve the above-mentioned object, a rotating shaft on which rotating teeth are mounted in parallel and a receiving tooth are supported in parallel between the left and right side walls of a machine frame formed in the shape of a horizontally long machine casing. In the straw cutter of the rotary tooth parallel type, in which the rotary teeth of the rotary teeth of the two rotary shafts are mounted in parallel on the left and right side walls of the machine frame, Vertical guide grooves for freely sliding the left and right ends of the rotating shaft up and down are provided in the area extending from the supporting part to the lower edge, and open openings facing the lower edge of the side walls of these guide grooves are provided. , a support member that supports the shaft end of the rotating shaft with its opening closed is installed so that the opening can be switched to an open state, and a portion of the left and right side walls that pivotally supports the rotating shaft; The present invention proposes an assembly device for a rotary shaft in a straw cutter of a parallel type rotary tooth type, in which mounting seats for bearing support members provided at the left and right end portions of the rotary shaft are installed around the rotary shaft.

Next, an example of implementation will be described in detail with reference to the drawings. In addition,
The same reference numerals in the drawings as in the previous means shall be used for components having the same effect.

Fig. 4 is a side view of a rotary tooth parallel type straw cutter A that can implement the present invention installed in a combine harvester B, and Fig. 5 is a longitudinal cross-sectional rear view of the same straw cutter A.
In the figure, 70 is a threshing section of combine B;
1 is a device for discharging threshed straw discharged from the threshing section 70; 1 is a machine frame of the straw cutter A;
10, 10 are the left and right side walls of the machine frame 1, 2 is a rotating shaft that rotates at high speed, 3 is a rotating shaft that rotates at low speed,
Reference numeral 6 indicates a guide groove, and reference numeral 8 indicates a support member.

The machine frame 1 is a normal one formed in the shape of a horizontally long machine case, and has an opening on the top side to receive straw discharged from the threshing section 70 of the combine harvester B and carried out by the carrying-out device 71 in a horizontal position. The mouth 11 is open, and the lower surface side is opened as a discharge port for discharging cut pieces of cut straw.

As shown in FIG. 5, the rotating shaft 2 that rotates at high speed has many circular saw-shaped rotating teeth 4...
2... This is a normal type that is installed across the frame between the left and right side walls 10, 10 of the machine frame 1 in a state where they are installed in parallel via... A bearing support member 2 that comes into contact with the installed assembly seat 12 and is connected and fixed by set bolts 21...
0 and 20 are fitted, and among the left and right shaft ends protruding from the left and right side walls 10, 10 of the rotary shaft 2, the shaft end protruding from one side wall 10 has an input A transmission pulley 23 and a transmission gear 24 that transmits transmission to the rotary shaft 3 that rotates at a low speed are assembled in the usual manner.

The rotating shaft 3 that rotates at low speed is shown in Figs. 1 and 2.
The structure is similar to that of the conventional means shown in the figure.

As shown in FIGS. 4, 5, and 6, guide grooves 6 formed in the left and right side walls 10, 10, respectively, guide the aforementioned rotating shaft 2 into the left and right sides of the bearing support members 20, 20. The rotation axis 2 of the left and right side walls 10, 10 is in a state where it is supported across the frame between the left and right side walls 10, 10 by assembling and fixing to the side walls 10, 10.
While passing from the shaft position to the lower edges 10a, 10a,
It is shaped like a notched groove in the vertical direction. The lower edges 1 of the left and right side walls 10, 10 of the guide grooves 6, 6
Opening ports 6 that open downward at 0a and 10a
As shown in FIG.
As shown in FIG. 7, when the guide groove 6 is lowered along the guide groove 6, it is supported from below and prevented from escaping from the guide groove 6. This support member 8 is pivoted at one end on the side wall 10 by a support shaft 80 and rotated upward with the other end as a rotation end, as shown in FIGS. 6 and 7. As shown by the chain line, the guide groove 6 is installed so that the opening 60 of the guide groove 6 can be switched to an open state. 90 is a downward direction from the position where the support member 8 crosses the opening 60 of the guide groove 6 and closes the opening 60, as shown by the solid line in FIGS. 6 and 7. side wall 1 to prevent rotation of
This is a stopper formed by reinforcing walls provided on the lower edges 10a, 10a of 0 and 10.

Note that in this embodiment, a guide groove for detaching and removing the rotating shaft 3 that rotates at a low speed is not provided, but a guide groove configured in the same manner as the guide groove 6 and the support member 8 is also provided for the rotating shaft 3. There are cases.

The embodiment device constructed in this manner operates as follows.

When removing the rotating shaft 2, which is supported so as to span between the left and right side walls 10, 10 of the machine frame 1, from the machine frame 1 in order to repair or replace the rotating teeth 4 mounted in parallel with it, , bearing support members 20, 20 fitted to the left and right shaft ends of the rotating shaft 2, and the left and right side walls 1.
The connections with 0 and 10 are released by removing the set bolts 21.

As a result, the left and right shaft ends of the rotating shaft 2 descend along the guide groove 6 together with the bearing support members 20, 20, and cross the opening 60 of the guide groove 6, as shown in FIG. A support member 8 provided as shown in FIG.
It will be supported by.

When this state is reached, one shaft end of the rotating shaft 2 is lifted up, and the support member 8 is rotated upward about the support shaft 80 as shown by the chain line in FIG. 6 to open the opening 60. Rotating shaft 2 supported by
Gently lower one end to support it in contact with the ground surface GL as shown by the chain line in Figure 5.

Next, lift the other shaft end of the rotating shaft 2 by hand, and move the support member 8 provided at the opening 60 of the guide groove 6 formed in the side wall 10 on that side to the position where the opening 60 is opened. Then, gently lower the other shaft end and place it on the ground surface GL.

This completes the work of removing the rotary shaft 2 from the machine frame 1.

Next, the rotating shaft 2 after the repair/replacement of the rotating teeth 4...
When assembling the rotary shaft 2 to the machine frame 1, place the rotary shaft 2 on the ground surface GL below the machine frame 1, and then move the rotary shaft 2 onto the left and right side walls 10, 1 by performing the reverse operation described above.
The left and right shaft ends are supported by the support members 8, 8 located at the respective openings 60 of the guide grooves 6, 6 provided in The bearing support members 20, 20 are attached to the side wall 1
Connected to the inner surface of 0 and 10 with set bolts 21...
Make sure it stays attached. This completes the assembly and installation of the rotating shaft 2.

As explained above, the rotary shaft mounting device for the rotary tooth parallel type straw cutter according to the present invention is a rotary shaft on which the rotary teeth are mounted in parallel between the left and right side walls of the machine frame formed in the shape of a horizontally long machine casing. In a straw cutter of the rotary tooth parallel type, in which the rotary shafts on which the receiving teeth are supported in parallel and the rotary shafts are horizontally mounted in parallel, the rotary teeth of at least the two rotary shafts on the left and right side walls of the machine frame are mounted parallel to each other. Vertical guide grooves for freely sliding the left and right ends of the rotating shaft up and down are provided in the area extending from the part that supports the rotating shaft to the lower edge thereof, and the side walls of these guide grooves are A support member that supports the shaft end of the rotating shaft while closing the opening opening facing the lower edge is installed in such a manner that the opening opening can be switched to an open position, and the rotation of the left and right side walls can be controlled. Since the mounting seats for the bearing support members provided at the left and right end parts of the rotating shaft are installed around the part that supports the shaft, it is easy to replace and repair the rotating teeth and receiving teeth. When attaching and detaching the rotating shaft from the machine frame for this purpose, the rotating shaft, which has a large number of rotating teeth and receiving teeth attached in parallel and is quite heavy, is placed in a state where one shaft end is safely suspended from the machine frame. By holding only the other shaft end and lowering it to the ground, and then lowering the remaining shaft end, you can remove it from the aircraft frame. Even a single worker can
The work of attaching and detaching the rotating shaft can be done easily and safely.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of the conventional means, FIG. 2 is a cross-sectional plan view of the same, FIG. 3 is a side view of the same, and FIG. 4 is a side view of a rotating tooth parallel type straw cutter that can implement the present invention. FIG. 5 is a longitudinal cross-sectional rear view of the same as the above, FIG. 6 is a side view of the main parts of the same, FIG. 7 is an explanatory view of the action of the main parts of the same, and FIG. 8 is a longitudinal cross-sectional rear view of the main parts of the same. Explanation of drawing symbols, A... Straw cutter, B... Combine harvester, GL... Ground surface, 1... Machine frame, 10...
Side wall, 10a...lower edge, 11...opening, 12...
... Assembly seat, 2 ... High-speed rotating shaft, 20 ... Bearing support member, 21 ... Set bolt, 22 ... Collar, 23 ... Transmission pulley, 24 ... Transmission gear,
3...Low speed rotating shaft, 4...Rotating tooth, 5...Receiving tooth, 50...Gear ring, 6...Guide groove, 60...Opening port, 70...Thresking section, 71...Carrying out device, 8...
...Support member, 80 ... Support shaft, 90 ... Stopper.

Claims (1)

[Scope of utility model registration request] A rotary tooth parallel type in which the rotary shaft on which the rotary teeth are mounted in parallel and the rotary shaft on which the receiving teeth are supported in parallel are horizontally mounted between the left and right side walls of the machine frame formed in the shape of a horizontally long machine casing. In the straw cutter, on the left and right side walls of the machine frame, at least the parts extending from the part that supports the rotary shaft on which the rotary teeth of the two rotary shafts are mounted in parallel to the lower edge are installed on the left and right sides of the rotary shaft. Vertical guide grooves are provided to allow the shaft ends to freely slide up and down, and the shaft ends of the rotating shaft are supported by closing the openings of the guide grooves facing the lower edges of the side walls. A bearing support member is provided at the left and right shaft end portions of the rotary shaft around the portions of the left and right side walls that pivotally support the rotary shaft, and the support member is installed so that its opening can be switched to an open state. A device for assembling a rotating shaft in a straw cutter with parallel rotating teeth, which is equipped with an assembly seat.