JPH0218808B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a grain culm conveying device for a combine harvester that integrates an upper conveying device and a vertical conveying device and simultaneously moves up and down to adjust the handling depth. It is.

(b) Prior Art Conventionally, there is a known technology in which a vertical conveyance device and a tip conveyance device are positioned one above the other, and as the vertical conveyance device rises, the tip conveyance device is also rotated upward by means of the protruding arm 9. It is being done.

For example, there is a technique described in Japanese Utility Model Application Publication No. 54-104626.

(C) Problems to be Solved by the Invention In the above conventional technology, as the vertical conveyance device rotates upward, the protruding arm contacts the upper conveyance device from below, causing both to move upward at the same time. However, since the protruding arm is placed protruding into the grain culm conveyance path, it interferes with the passage path of the grain culm stock, causing the problem that the grain culm gets caught in this. be.

In addition, in the above conventional technology, since the pivot points of rotation of the vertical conveyance device and the upper conveyance device are different, the protruding arm attached to the vertical conveyance device comes into contact with the lower surface of the upper conveyance device from below. However, as the vertical conveyance device rises, the contact point of the protrusion arm changes, so there was a problem that the contact point between the tip of the protrusion arm and the upper transfer device had to slide.

The present invention is designed to solve these problems.

(d) Means for Solving the Problems The objects of the present invention are as described above, and the configuration for achieving the objects will now be explained.

The upper conveyance device 9 and the vertical conveyance device 10, which are arranged in two upper and lower stages at intervals, are centered around the upper conveyance drive case 11 and the vertical conveyance drive case 8, which are arranged on a shaft 27 protruding from the reaping drive transmission case 12. The front end is pivotably supported to be vertically movable, and between a cam projection 11a protruding from the upper transport drive case 11 and a cam projection 8b protruding from the vertical transport drive case 8, the vertical transport device 10 is lowered as far as possible. In this state, a gap of angle a° is formed, and an engaging device C is formed between the upper transport drive case 11 and the reaping drive transmission case 12 by the cam protrusions 12a and 11b, and the upper transport drive case 11 rotates. The lower end of movement is regulated.

(E) Embodiment The object and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings will be explained.

Figure 1 is a side view of the grain culm conveying device of the combine harvester.
Figure 2 is also a front view, Figure 3 is a plan view of the main parts,
FIG. 4 is a side view when long culms are harvested, and FIG. 5 is a side view when short culms are harvested.

The root part of the grain culm is weeded by a weeding plate 1 protruding from the tip of the machine body and guided to a pulling device 2. The lifting device 2 is composed of a lifting case and lifting tines,
Causes lodging grain culm.

While raising the lodging grain culm with the raising device 2, the stock base is raked in with the tines 7 and the raking wheel 6, cut with the reaping device 3, and vertically conveyed with the lower conveying device 5. Convey to the lower part of the device 10.

The stock part is transferred from the lower conveying device 5 to the vertical conveying device 10, and is vertically conveyed and transferred to the feed chain 14 of the threshing device 15. The tip of the grain culm is transferred from the lifting device 2 to the upper conveying device 9, and placed on the handling barrel entrance of the threshing device 15.

4 is a crawler type traveling device, 70 is a transmission case, and 13 is an engine.

Power is transmitted from the engine 13 to the input pulley 19 via a V-belt, and the reaping drive transmission case 12
The upper conveyance drive case 11 drives the upper conveyance device 9, and the vertical conveyance drive case 8 drives the vertical conveyance device 10.

Upper transport drive case 11 and vertical transport drive case 8
A third shaft 27 passes through the inside, and the third shaft 27 drives the upper conveyance device 9 and the vertical conveyance device 10.

The third shaft 27 is the center of rotation of the upper conveying device 9 and the vertical conveying device 10 for adjusting the handling depth.

A rotating pivot portion 38 for adjusting the handling depth is formed at the joint between the upper conveyance drive case 11 and the reaping drive transmission case 12, and a rotation pivot portion 38 is formed at the joint between the upper conveyance drive case 11 and the vertical conveyance drive case 8. It constitutes an engagement device B for rotating the upper conveyance device 9 with a delay.

In the embodiment shown in FIG.
This figure shows an embodiment in which an upper transport drive case 11 is jointly supported on the outside of the transport drive case.

The operation of the present invention is explained in FIGS. 4 and 5.

As shown in FIG. 5, the upper conveyance device 9 does not rotate while the vertical conveyance drive case 8 is first rotated and the vertical conveyance device 10 is rotated to an angle a°.

Next, as shown in FIG.
Only when it has rotated to b° will the upper conveyor device rotate by b°.

The upper conveyance drive case 11 is attached to the side surface of the reaping drive transmission case 12 until the cam protrusion 8b of the vertical conveyance drive case 8 shown in FIGS. 7 and 8 engages with the cam protrusion 11a of the upper conveyance drive case. The cam 12a is engaged with and fixed to the cam protrusion 11b on the opposite side of the upper transport drive case 11.

Conversely, when descending, the cam protrusion 11b engages with the cam protrusion 12a, and the upper conveyance device 9 first stops,
After that, only the vertical conveyance device 10 descends.

A indicates a short-culm grain culm, and A' indicates a long-culm grain culm.

6 is a plan sectional view of the reaping drive transmission case 12, FIG. 7 is a side view of the engagement device B, FIG. 8 is a drawing of the cam projection, and FIG. 9 is a plan view of the lower conveyance drive case 6.
FIG. 10 is a side sectional view of the lower transport drive case 62, and FIG.
12 is a side sectional view of the reaping drive transmission case 12, and FIG. 12 is a drawing showing a bevel gear inside the upper conveyance drive case 11.

Power is transmitted from the engine 13 to the input pulley 19. The input pulley 19 drives the clutch body 73 on the first shaft 25. A safety clutch 74 is engaged with the clutch body 73 by being pushed by a spring, and when an overload is applied, the spring is pushed and the safety clutch 74 is released. A reaping clutch 28 is fitted around the outer periphery of the safety clutch 74, and a pawl 28b of the reaping clutch 28 engages with the safety clutch 74 to connect and disconnect power. The reaping clutch 28 is operated by a reaping clutch lever 59 shown in FIG.

From the gear 28a of the reaping clutch 28, the second shaft 2
drive the gears 29, 30 on top 6. The gear 29,
30, two sliding gears 31a, 31 on the third shaft 27
b engages and performs the reaping shift.

This operation is performed using the reaping speed change lever 60 shown in FIG. Bevel gears 37 and 8 are provided on the extension of the third shaft 27.
2 are fixedly installed, and each upper conveyance drive case 11
The bevel gear 23 inside meshes with the bevel gear 81 inside the vertical conveyance drive case 8.

The third axis 27 is an upper conveyance device 9 and a vertical conveyance device 10.
It is the center of rotation. The bevel gear 23 is fixed to an upper conveyance drive shaft 24, and a sprocket 21 for the upper conveyance device 9 is fixed to the upper end of the shaft 24. Also, the bevel gear 81 is connected to the vertical conveyance drive shaft 80.
A vertical transport drive sprocket 22 is fixed to the lower end of the shaft 80.

An engagement device C is provided on the rotation pivot portion 38 of the reaping drive transmission case 12 and the upper conveyance drive case 11, and an engagement device C is provided between the cam protrusions 12a and 11b to prevent the upper conveyance drive case 11 from descending below a certain angle. It is configured to be engaged and fixed.

The upper transport drive case 11 is the vertical transport drive case 8.
An engagement device B shown in FIGS. 7 and 8 is provided on the rotational pivot portion.

A gap of an angle a° is formed between the cam protrusion 11a protruding from the upper conveyance drive case 11 and the cam protrusion 8b protruding from the vertical conveyance drive case 8 when the vertical conveyance device 10 is fully lowered. ing. Initially, only the vertical conveying device 10 is rotated upward by the angle a°.

Reference numeral 8a denotes a rotating arm, which is rotated by the rotating arm on the vertical transport drive case 8 side in order to adjust the handling depth.

Further, when the entire reaping device is rotated for purposes such as crossing over a ridge, it is rotated about the first shaft 25 and the pivot frame 20.

Further, a crank 36 is provided at the other end of the third shaft 27,
The reaping device 3 is driven by the connecting rod 35.

Furthermore, the power transmission shaft 34 is driven by a combination of bevel gears 32 and 33, and the lower conveyance drive case 62
It transmits power in the direction. 34a is a case of a transmission shaft.

Power is transmitted to the fourth shaft case 61 of the fourth shaft 42 through the power transmission shaft 34 . Bevel gear 40,4
1 transmits power to a fourth shaft 42, and bevel gears 43, 44 at the ends of the fourth shaft transmit power to a power transmission shaft 45 to the lifting device. 45a
is the case of a power transmission shaft. A fifth shaft 76 is driven by a bevel gear 50 at the end of the power transmission shaft 45 . Bevel gear combination 5 on the fifth shaft 76
1,49 connects the lifting device sprocket 46,
47 is being driven.

Further, the drive sprocket 48 of the side divider device is fixedly mounted on the end of the fifth shaft 76.

Further, a rack 52 is provided on the fourth shaft 42 to rotate a pinion 53 at reduced speed.

The pinion 53 drives the gear 55 via the shaft 77, and the gear 56 meshing with the gear 55 drives the lower conveyance device drive shaft 57.

Safety clutch device 58 on the lower transport drive shaft 57
is provided. Further, the lower conveyance drive shaft 57 drives the drive sprocket 5a of the lower conveyance device 5, the scraping wheel 6, and the drive pulley 7a of the scraping tine 7.

(F) Effects of the Invention Since the present invention is configured as described above, it has the following effects.

First, in the conventional handling depth adjustment mechanism,
As the vertical conveying device rotates upward, the protruding arm contacts the upper conveying device from below, and both rotate upward at the same time. Since it is disposed protruding from the conveyance path, it interferes with the passage path of the grain culm, causing the problem that the grain culm gets caught in this.

In the present invention, the engaging device with the upper conveying device 9 when the vertical conveying device 10 is raised is constituted by the cam protrusion 11a and the cam protrusion 8b on the shaft 27. It no longer protrudes into the passageway.

Second, in the conventional technology, the pivot points of rotation of the vertical conveyance device and the upper conveyance device are different, so the protruding arm attached to the vertical conveyance device comes into contact with the lower surface of the upper conveyance device from below. However, as the vertical transport device rises, the contact point of the protrusion arm changes, so there was a problem that the contact point between the tip of the protrusion arm and the upper transport device had to slide. be.

In the present invention, both the vertical conveyance drive case 8 and the upper conveyance drive case 11, which are pivot parts of the vertical conveyance device 10 and the upper conveyance device 9, are connected to the shaft 27.
Since it is installed at the top, the center of vertical movement is the same,
There is no need to provide a protruding arm, and engagement can be achieved using a cam protrusion provided on the shaft.

[Brief explanation of drawings]

Figure 1 is a side view of the grain culm conveying device of the combine harvester.
Fig. 2 is a front view, Fig. 3 is a plan view of the main parts of the present invention, Fig. 4 is a side view when reaping long culms, Fig. 5 is a side view when reaping short culms, and Fig. 6 is reaping. A cross-sectional plan view of the drive transmission case 12, FIG. 7 shows the engagement device B.
8 is a drawing of the cam protrusion, FIG. 9 is a plan sectional view of the lower transport drive case 62 part and the lifting drive unit, and FIG. 10 is a diagram of the lower transport drive case 62.
11 is a side sectional view of the reaping drive transmission case 12, and FIG. 12 is a drawing showing the bevel gear inside the upper conveyance drive case 11. A... Grain culm, B, C... Engagement device, 8... Vertical conveyance drive case, 9... Upper conveyance device, 10... Vertical conveyance device,
11... Upper transport drive case.

Claims (1)

[Claims] 1. The upper conveyance device 9 and the vertical conveyance device 10, which are arranged at intervals in two upper and lower stages, are centered around the upper conveyance drive case 11 and the vertical conveyance drive case 8, which are arranged on the shaft 27 protruding from the reaping drive transmission case 12. a cam protrusion 11a whose front end is pivotably supported to be vertically movable and protrudes from the upper conveyance drive case 11;
A gap of an angle a° is formed between the cam protrusion 8b protruding from the vertical conveyance drive case 8 when the vertical conveyance device 10 is fully lowered, and the upper conveyance drive case 11 and the reaping drive transmission case 12 A grain culm conveying device for a combine harvester, characterized in that an engaging device C is constituted by cam projections 12a and 11b between the upper conveying drive case 11 and the lower end of rotation of the upper conveying drive case 11.