JPH0518918Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a processing barrel transmission device in a threshing machine for threshing grain culms.

(B) Prior Art Conventionally, it is already known from Japanese Utility Model Publication No. 53-27893 and the like to provide a processing section with a processing cylinder inside the processing chamber.

(c) Problems to be solved by the invention Since the processing section of the known threshing machine was covered with a case that was integrated with the machine wall forming the handling room, it was difficult to maintain and inspect the processing section, and it was difficult to maintain and inspect the processing section. Even if they were installed, it was difficult to carry out sufficient maintenance work.

(d) Means for solving the problem The present invention pivots the outer case of the processing section so that it can rotate around the lower part, supports the processing shaft on the outer case, and supports the processing shaft on the front wall. When the processing section is maintained and inspected by interlocking and interlocking with the installed transmission device via an expandable universal joint, when the outer case of the processing section is rotated outwards around the lower part, the processing barrel moves outward together with the outer case. The above-mentioned problem is solved by rotating the processing section to open almost the entire surface, thereby making maintenance and inspection of the processing section easy, and furthermore, when opening and closing the outer case, the universal joint By expanding and contracting, there is no need to attach or detach the processing shaft, improving work efficiency.

(E) Function Grains and small straw waste generated during threshing by the handling barrel fall through the receiving net onto the oscillating sorter and are sorted out, similar to a normal threshing machine, and are separated into relatively large straw. Exhaust materials such as scraps and ear cuts are sent to a processing section and processed.

When servicing and inspecting the processing section, when the outer cover is rotated outward from the bottom, the processing cylinder also rotates together with the outer cover, and the processing section is opened almost completely, and each part of the processing section is maintained in this state. Inspection to.

When opening and closing the outer cover, the universal joint expands and contracts even though the processing shaft moves outward with the outer cover relative to the drive unit, so there is no need to attach or detach the processing shaft.

(F) Embodiment An embodiment of the present invention will be explained about a threshing machine for a combine harvester shown in the drawings. 1 is a handling barrel that is pivoted in a handling chamber 2 with its front part tilted downward; A feed chain 4 and a pinch rail 5 are arranged along the handling port 3, and a sorting air path is formed by a blower windmill 6 provided below the supply port 1a and a suction windmill 8 attached to the side wall of the waste sorting chamber 7. , there is a transfer plate 9a facing the lower surface of the receiving gutter 9, a sorting net 10 which is connected to the rear end and faces the uppermost receiving gutter 10a, which is approximately horizontal or slightly downwardly inclined, and a central flow plate 11 from the top. The oscillating sorting body 14, which is made up of a large number of parallel spokes 11a extending toward the first flow plate 12a, a corrugated transfer plate 13a facing the second receiving gutter 12, and a stroke rack 13, is oscillated back and forth. A straw transporting device 15 is provided above the dust sorting chamber 7.

Further, a processing section 18 consisting of a transfer chamber 16, a transfer chamber 19, and a processing chamber 17 following the transfer chamber 16 is provided near the bottom of the rear half of the processing chamber 2.
The processing shaft 20, which is supported within the interior and whose front end protrudes from the front wall of the transfer chamber 16, is connected to an input shaft 2b that is supported on the entrance side plate 2a of the processing chamber 2 via a universal joint 20a.
The input shaft 2b is driven by a sprocket 21a attached to the handling barrel shaft 21 via a chain in a transmission case housing them, and the universal joint 20a is connected to the inner and outer shafts as shown in FIG. The connecting rod 20b is configured to be extendable and retractable by spline fitting, and the transfer chamber 1 of the processing shaft 20 is
A transfer spiral 22 is fixed within the processing chamber 17, and a processing cylinder 23 having processing teeth 24 is installed within the processing chamber 17.
The transfer chamber 16 is communicated with the processing chamber 2 through a dust inlet 25, and the inside from the lower part of the processing chamber 17 protrudes half above the swinging sorting body 14 as shown in FIG. 2, and is covered with a processing cylinder receiving net 26. , a discharge port 27 provided inside the rear end portion opens toward the suction port of the suction windmill 8,
Guide plates 29, 29 are provided at the front and rear portions between them.

Further, the transfer chamber 19 has a conical cylinder 23 connecting the inner periphery of the terminal end of the transfer spiral 22 and the starting end of the processing cylinder 23.
a, and the conical body 22a has two blades 3 protruding from its outer peripheral surface, following the transfer spiral 22 (2 leads), and having lead angles in the same direction.
4 and a boss 34a bulging inside the starting end are integrally molded by casting, and this boss 34a is screwed onto the hexagonal processing shaft 20 with a bolt 34b. The boss 34a also serves as a means for attaching the front part of the processing cylinder 23 to the processing shaft 20, and serves as a means for attaching the front part of the processing cylinder 23 to the processing shaft 20. The terminal end is screwed onto the starting end surface of the blade 34 by a bolt 34d... to connect the cylindrical body of the transfer spiral 22 and the conical body 22.
The outer circumferential surface of a is made up of a series.

The outside of the transfer chamber 16 and the processing chamber 17 is covered with an outer case 31 having a shape that follows the outer shapes of the transfer spiral 22 and the processing cylinder 23, and the outer case 31 is constructed separately from the machine frame. The front and rear portions of the processing shaft 20 are pivotally supported to be openable and closable by fulcrum shafts 28, 28, and the bearing holders 33, 33 supporting the front and rear portions of the processing shaft 20 are separated from a small diameter portion 33a and a large diameter portion 33b. The circumferential groove 3 is formed at the base of the small diameter portion 33a by a parting tool.
As shown in FIG. 3, the large-diameter portion 33b is formed of a disc having a slightly smaller diameter than the inner diameter of the processing cylinder 23 and slightly larger than the outer diameter of the transfer spiral 22. bearing holder 33,3
3 has the same diameter, and the front bearing holder 3
The transfer spiral 2
A recess 3 is formed on the outer periphery of the disk 22b fixed to the starting end of 2.
3e, and screw the outer periphery of it to the front wall 17a of the outer case 31 with bolts 34e, and the rear bearing holder 33 is attached to the processing cylinder 23.
It is fitted onto the inner circumferential surface of the body with a very small gap therebetween, and is screwed to the rear wall 17b near the outer circumference with bolts 34e through washers.

The outer case 31 is formed into a half octagon as shown in FIG. Mounting plates 40, 40 fixed to
There are bosses 41, 41 that support the fulcrum shaft 28 mentioned above.
As shown in FIGS. 8 to 10, the receiving tube 42 is welded and fixed to the front surface of the outer case 31.
43 and a screw rod 44 with a handle are loosely fitted so as to be tiltable, and the hooks 43, 43
It can be tightened by fitting into the holes 45, 45 of the front wall 17a' which is integral with the machine frame and tightened by rotating the screw rod 44, or removed by loosening it, and the rear part is attached to the machine wall. A mounting piece 47 welded to the rear wall 17b of the outer case 31 is attached to a bracket 46 protruding from the rear wall 17b of the outer case 31.
It can be attached and detached with a screw rod 48 with a handle,
Tightening can be achieved by engaging a lever 49 pivotally attached to the upper part of the outer case 31 with a pin 51 integral with a receiver 50 screwed onto the machine wall and having a U-shaped cross section, and tightening a nut 52. At this time, the notch 53 provided on the upper side edge of the outer case 31 engages with the pin 51.

Reference numeral 35 denotes a guide plate that protrudes from the inner peripheral surface of the front part of the processing chamber 17 and is provided along the outer periphery of the rotation locus of the blade 34, which guides the waste material forcibly transferred by the blade 34 to the processing chamber 17. It has a lead angle that guides it towards the target.

When the above-mentioned thresher is mounted on the machine base of a combine harvester to perform threshing, the supply port 1a is connected to the stalk conveying device.
The stalks fed to the feed chain 4 and the clamping rail 5 are threshed by the threshing drum 1, and the threshed grains and small straw chips fall from the receiving net 9 onto the oscillating sorting body 14 and are transported. In the process, they are subjected to wind sorting and are transported by the sorting net 10 and the spokes 11a.
It is the most selected, followed by Strollak 13.
The remaining straw and waste are discharged through the outlet 27.
The straw dust from the machine is discharged outside through the dust outlet 37 and the suction windmill 8.

Further, waste materials such as ear cuts and long straw generated in the handling chamber 2 enter the transfer chamber 16 through the dust inlet 25 and are transferred to the rear processing chamber 17 by the transfer spiral 22.

When the waste material is transferred from the transfer chamber 16 to the processing chamber 17, a large amount of waste material is generated in the handling chamber 2 due to wet grain culms being supplied and threshed or highly efficient threshing. At the end of the transfer chamber 16, the rear wall 32 smoothly passes through a large cutout to a portion corresponding to the processing cylinder receiving net 26 and moves to the transfer chamber 19, where the blades 34 and the conical cylinder 22a are connected to each other. It moves to the outer periphery of the processing cylinder 23 while being expanded.

Next, the dust transferred to the processing chamber 17 is processed by the processing teeth 24 of the processing cylinder 23, and the single grains and finely divided straw waste are transferred to the processing cylinder receiving net 2.
The straw waste leaks from the oscillating sorter 14 from the oscillating sorter 14, joins the material to be sorted from the receiving net 9, and moves to the rear end of the processing chamber 17 through the discharge port 27 to the suction windmill 8 as described above. It is thrown and ejected.

When performing maintenance and inspection on the processing section 18, remove the cover 54 at the front of the processing section 18, loosen the screw rods 44, 48 and nuts 52, and remove the fixing metal.
When the lever 49 and the mounting piece 47 are removed, the outer case 31 can be rotated outward about the lower fulcrum shaft 28, and at this time, the transfer spiral 22, processing cylinder 23, etc. As shown, it rotates outward integrally with the outer case 31, and the processing barrel receiving net 2
6. Since the perforated plate 55 covering the lower part of the transfer spiral 22 is exposed, it is possible to easily maintain the transfer spiral 22 and the processing cylinder 23, as well as the processing cylinder receiving net 26, etc.;
Furthermore, when performing maintenance and inspection on the handling chamber 2 or the swing sorting body 14 located below it, open the cylinder cover 56 as shown in FIG. 57 is fitted into the hole of the U-shaped receiver 58, so by removing it, the back part can be easily pulled out from above, and the lower part can be easily pulled out from the open part of the outer case 31. Perform maintenance and inspection in this condition.

In addition, once the maintenance and inspection are completed, it can be assembled quickly and easily by reversing the above steps, and
When the outer case 31 is opened, the fixtures, levers 49, mounting pieces 47, etc. are all attached to the outer case 31 and do not remain on the main body, so they do not become an obstacle to the work.

(g) Effect of the invention This invention has a handling chamber 2 in which the handling cylinder 1 is installed as described above.
In a threshing machine, a processing section 18 is provided on the side of the threshing machine, and a processing barrel 23 is pivotally supported on the processing section 18 by a processing shaft 20,
The outer case 31 of the processing section 18 is pivoted so as to rotate around the lower part, and the processing shaft 20
is supported on the outer case 31, and the processing shaft 20 is interlocked with the transmission device provided at the front part via the expandable universal joint 20a. The processing section 18 can be opened substantially entirely by rotating the processing section 18 outwardly around its lower part, and each section of the processing section 18 can be maintained and inspected extremely easily.

Moreover, although the processing shaft 20 of the processing section 18 is rotated laterally around the lower part of the outer case 31 together with the outer case 31, the universal joint 20a
Since it expands and contracts, there is no need to attach or detach the processing shaft 20, and work can be performed with high efficiency.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention,
Figure 1 is a vertical side view of the threshing machine, Figure 2 is a vertical plane view of the same as above, Figure 3 is a vertical plane view of the processing section, Figure 4 is a front view of the connection between the transfer spiral and the conical barrel, and Figure 5. 6 is a cross-sectional view of the universal joint, FIG. 7 is a cross-sectional view of the threshing machine, FIG. 8 is a plan view of the outer case, and FIG. 9 is a side view of the same as above. FIG. 10 is a front view of the same as above, FIG. 11 is a cross-sectional view of the processing section, and FIG. 12 is a plan cross-sectional view showing an air path that blows through the processing chamber and heads toward the suction windmill. DESCRIPTION OF SYMBOLS 1... Handling cylinder, 18... Processing section, 20... Processing shaft, 20a... Universal joint, 22... Transfer spiral, 2
3... Processing cylinder, 31... Outer case.

Claims (1)

[Scope of utility model registration request] In a threshing machine in which a processing section 18 is provided on the side of a handling chamber 2 in which a processing barrel 1 is installed, and a processing barrel 23 is pivotally supported in the processing section 18 by a processing shaft 20, an outer case 31 of the processing section 18 is attached to a lower part of the threshing machine. The processing shaft 20 is supported by an outer case 31, and the processing shaft 20 is interlocked with a transmission device provided at the front part via an extendable universal joint 20a. Characteristics of the processing barrel transmission device in the threshing machine.