JPS5845538Y2 - Grain culm lifting device in harvester - Google Patents

Description

[Detailed explanation of the invention] As shown in Figures 4 and 5, the shell culm lifting body in the conventional harvester was driven by a distributing shaft suspended horizontally immediately behind the upper sprocket shaft. When the culm is harvested and transferred to the rear culm conveying device, if the culm is long, the tip of the culm collides with the distribution shaft, causing it to be squeezed and shed, and its movement force is affected, resulting in poor posture. There were drawbacks, such as the fact that the flow was significantly disturbed, making handover and conveyance unsmooth.

If the culm pulling body is configured to be high in order to solve this drawback, it will be uneconomical to raise a culm that is not a long culm, and the culm pulling body will become unstable, making it necessary to make its support member stronger. Not only that, but the culm raising body obstructs forward visibility and deteriorates maneuverability.

The distance between the axes of the sprocket that hangs the chain with the chain attached to the casing and the lifting pawl becomes longer, and its runout increases, colliding with the case and causing severe wear, as well as making abnormally loud noises and causing short culms or short culms. The spike part of the shell culm of standard culm length is squeezed and the grain is shed.

Furthermore, in order to drive the upper sprocket shaft, a drive shaft directed diagonally forward and upward from the gear case installed at the rear of the cutting blade is required; Since the upper part of the drive shaft has already reached the upper rear surface of the culm lifter, it hits the operation panel and other fixed members, resulting in drawbacks such as insufficient upward tilting.

Although the present invention has a simple structure, even if the culm is long, the panicle does not hit the distribution shaft installed horizontally on the upper part of the culm puller, causing no shedding, and does not disturb the posture of the culm. It is also an object of the present invention to provide a shell culm pulling device for a harvester that does not cause any hindrance to the upward tilting of the reaping section, and in which a plurality of shell culm pullers are arranged in parallel in front of the cutting blade. , a transmission for changing the shell culm lifting speed is attached to the back of the upper sprocket shaft of the shell culm lifting body on one side, and one end of the output shaft of the transmission is interlocked and connected to the sprocket shaft,
The other end is interlocked and connected to one end of the distribution shaft horizontally suspended above the sprocket shaft by a transmission mechanism in the case that rises above the transmission device, and the upper sprocket shaft of the other culm triggering body can be freely attached and detached by the distribution shaft. The device is characterized in that it is configured to be driven from above via a transmission case.

The embodiment shown in the drawings will be described in more detail below. 1. A preprocessing frame supported so as to be tiltable up and down on a horizontal axis at the front of a threshing device mounted on a combine harvester. A former clamping conveyor 3, a stem conveyor 4, etc. are attached, and immediately after the plurality of cutting bodies attached to the front end, there are a plurality of culm triggering bodies 5, which are inclined so that the rear side is higher.
...is the provision.

5. The above-mentioned culm promoter. The floating sprocket that is pivotally supported at the bottom of ... and the sprocket shaft at the top 6. Between the sprocket 7 and the sprocket 7, which are pivotally supported, there is a chain 9°, which has lifting pawls 8°, which are pivoted at appropriate intervals so as to be able to rise and fall freely.

As shown in FIGS. 1 and 3, a transmission 10 is detachably attached to the back of the sprocket shaft 6 of the culm lifting frame 5 on one side, and its input The shaft 11 rises diagonally forward and upward from a gear case provided at the rear of the cutting blade 2, and the bevel gear 12 attached to the input shaft 11 is a lateral speed change drive supported within the case 10a of the transmission 10. It meshes with the bevel gear 14 of the shaft 13.

Two large and small gears 15a are fitted to the variable speed drive shaft 13 in a housing to transmit rotation but to be movable in the axial direction.

The movable gear 15 consisting of 15b is configured to mesh with either a high speed gear 17a or a low speed gear 17b fixed to a horizontal output shaft 16.

Further, a bevel gear 18 attached to one end of the output shaft 16 meshes with the bevel gear 6a of the sprocket shaft 6, and a sprocket 20 for driving a distribution shaft 19, which will be described later, is attached to the other end.

Thus, the distribution shaft 19 is connected to the other side and the intermediate culm lifting frame 5,
From the chain case 2L21 which is detachably screwed onto the upper back surface of the culm lifting frame 5, 5 and extends upwardly from the upper end of the culm lifting frames 5, 5, and the case 10a of the transmission 10. The distribution shaft 19 is supported in a receiving tube 22 that is horizontally suspended between the upper portions of the upwardly extending portions.
A sprocket 23 attached to one end of the output shaft 16 is driven by a sprocket 20 at the other end of the output shaft 16 via a chain 24.

The sprockets 25.25 attached to the sprocket shafts 6, 6 of the culm lifting frames 5, 5 located intermediate to the other side are connected to the intermediate shaft 26.2 supported on the upper part of the chain case 21°21.
The bevel gears 28 and 28 attached to the rear ends of the intermediate shafts 26 and 26 are linked to the bevel gears 19' and 26' attached to the distribution shaft 19, respectively, via chains 2γ. , 19'.

In addition, 29. ...is a culm trigger 5. A guide plate protruding from the back side toward the culm evacuation route, 30
is a shift lever of the transmission 10, and when it is tilted to the left in Fig. 3, the moving gear 15 also moves to the left and becomes high speed. If the condition is good, tilt the speed change lever 30 to the right to reduce the speed and raise the culm at the standard speed.

In the above-mentioned device, the erect pilose culm separated by the cutting body is exposed to the raising claws 8. It is raised in the upward movement stroke of..., its sugar part passes under the receiver tube 22 of the distribution shaft 19, and the root part is raised by the cutting blade 2.
The stalks and stock bases are transferred to a stem conveyor 4 and a stock head clamping conveyor 3 and transported later, and then supplied to a threshing device mounted on a machine stand.

Even if the reaped culm is a long culm, the sprocket shaft 6. The distribution shaft 19, which was at the same height as the culm triggering body 5. Because the sugar part is arranged at the upper end of the distribution shaft 19, it passes through the distribution shaft 19 in an orderly manner without reaching it.

As described above, the present invention is a harvester in which a plurality of culm lifting bodies are arranged in parallel in front of the cutting blade, and the culm lifting speed is changed at the back of the upper sprocket shaft of one of the culm lifting bodies. A transmission is attached, one end of the output shaft of the transmission is interlocked and connected to the sprocket shaft, and the other end is connected to one end of a distribution shaft horizontally suspended above the sprocket shaft. The structure is such that the upper sprocket shaft of the other culm triggering body is driven from above via a removable transmission case by the distribution shaft, so the culm triggering body is almost the same as the conventional one. Even if the height is increased, the distribution axis will be located at a sufficiently high place, so that even if the culm is long, the sugar part will not collide with the distribution axis and become granulated, and the movement of the sugar part will be inhibited by the distribution axis. Immediately thereafter, the shell culm will not become clogged in front of the conveyance device where the starting end faces, or the conveyance posture will be disturbed, which will not have an adverse effect on subsequent shell culm processing.

When the shell culm puller is raised higher in order to install the distribution shaft at a higher place as in the conventional method, the upper part of the shell culm puller is raised and rotated by the centrifugal force, so that the upper part of the shell culm puller is lower than the distribution shaft by that much. It has to protrude upwards, which worsens the forward field of vision, makes it difficult to visually recognize the weeding situation, and makes the shell culm raising path body unstable; however, in this case, the shell culm raising body is of the same size. No such problems will occur.

Furthermore, since there is no need to lengthen the chain of the lifting pawl, no abnormal vibration occurs, and its wear and noise can be prevented.

Furthermore, since the output shaft of the transmission is used to drive the sprocket shaft and distribution shaft of the culm lifter to which it is attached, the speed change and transmission mechanism can be significantly simplified, and weight and manufacturing costs can be reduced. It can be reduced.

Furthermore, the old shell culm pullers are conveniently mass-produced as standard types, and can be very easily adapted to various culm lengths by attaching and detaching only the drive mechanisms of different lengths and replacing them.

Furthermore, when the transmission is operated to change the speed, the lifting speed of not only the shell culm lifting body to which the transmission is attached, but also other shell culm lifting bodies driven by the output shaft can be changed with a single touch. A raising speed suitable for the state of the shell culm, such as a lodging shell culm or an upright shell culm, can be easily obtained.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front view with the lower part of the culm lifting device omitted, Fig. 2 is a partially cutaway side view, and Fig. 3 is a diagram showing the transmission. A cross-sectional view, and Figure 4 is a front view of an example in which the distribution shaft is at the same height as the sprocket shaft.
FIG. 5 is a side view of the same as above. 2...Cut blade, 5...Culm trigger, 6.
... Sprocket shaft, 10 ... Transmission device, 11 ... Input shaft, 16 ... Output shaft,
19...Distribution shaft, 21...Chain case.

Claims (1)

[Scope of utility model registration request] In a harvester in which a plurality of culm pulling bodies are arranged in parallel in front of the cutting blade, - 熌! 11 A transmission for changing the culm lifting speed is attached to the back of the upper sprocket shaft of the culm pulling body, one end of the output shaft of the transmission is interlockingly connected to the upper sprocket shaft, and the other end is connected to the upper sprocket shaft. A transmission case that is interlocked and connected to one end of the distribution shaft horizontally suspended above the transmission by a transmission mechanism in a case that stands up above the transmission, and that the upper sprocket shaft of another culm triggering body can be attached and detached by the distribution shaft. A shell culm lifting device for a harvester, characterized in that it is configured to be driven from above via the culm.