JP2002078412A - Grain stem raising part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the durability of a grain stem raising device by reducing the damage and break of a raising lag 39 caused by the friction between the lag and an edge at an upper tip of a periphery part 49 of a free-moving roller 47 at the lower side of a guide base 41, when the raising lag 39 invades the upper side of the periphery part 49. SOLUTION: The region from the side of a sprocket 46 at the upper side to the upper end side of the periphery 49 of the freely moving roller 47, in the nonoperable side region of the raising lag 39 of the guide base 41 is cut to open the region. The upper side (a tongue like part 50) of the periphery part 49 is tilted in the rear direction so that the periphery part 49 may not interfere the raising lag 39 when the raising lag 39 invades into the periphery part 49 from the cut part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cereal stem raising part.

[0002]

2. Description of the Related Art Heretofore, in a cereal stem raising part, a raising rug has been raised when passing through a rug guide part to raise the cereal stem by rotating a raising chain, and this rug guide has been operated. In other parts, it falls down and becomes the non-working side.

[0003]

In such a raising operation, chains are inherently easily stretched, and in particular, chains which are easily covered with mud or water, such as the raised chains, grow remarkably. With the extension of the raising case and the inclination direction of the raising case, the raising chain is greatly slackened in the rearward direction until the raising lug interferes with the upper end side of the peripheral edge of the idler roller on the lower side of the guide base. When the raising lug enters the upper end side of the peripheral portion, it interferes with the edge of the upper end of the peripheral portion to cause damage or breakage due to wear,
There was a problem that durability was reduced.

[0004]

The present invention employs the following technical means in order to solve the above-mentioned problems. That is, a plurality of raising lugs 39 are provided so as to be able to stand up and down at appropriate intervals between a sprocket 46 fixed to the upper side of the guide base 41 and a floating roller 47 supported at the lower end position of the guide base 41. In the grain stem raising portion formed by winding the raising chain 48 and superposing the guide cover 42 on the front side of the guide base 41, the sprocket 46 on the upper side of the non-working side region of the raising lug 39 of the guide base 41 is provided. The gap between the side portion and the upper end side of the peripheral portion 49 of the lower floating roller 47 is notched and opened, and when the raising lug 39 enters the peripheral portion 49 from the notch portion, the peripheral edge portion 49 and the raising lug are opened. In this configuration, the upper end side of the peripheral edge portion 49 is inclined rearward so as not to interfere with the grain 39.

[0005] However, by the rotation of the raising chain 48,
The raising rug 39 rises when passing through the rug guide portion to perform the raising action of the grain stem, and falls down to the non-operation side except for the rug guide portion. In such a raising operation, chains are inherently easily stretched. Particularly, in a case where the chains are liable to be covered with mud or water, such as the raising chain 48, the growth is remarkable. As shown in FIG. 4, the raising lug 39 has a floating roller 47 on the lower side of the guide base 41.
May be greatly slackened in the rearward direction until it interferes with the upper end 50 of the peripheral edge 49, but this loosening causes the lug 39 to enter the upper end side (tongue 50) of the peripheral edge 49. Even if it interferes, the raising lug 39 does not
Damage or breakage due to abrasion generated by interfering with the edge of the upper end on the upper side is avoided.

[0006]

As described above, according to the present invention, the raising lug 39 is connected to the floating roller 47 on the lower side of the guide base 41.
Even if it interferes when entering the upper end side of the peripheral portion 49, the raising lug 39 interferes with the edge of the upper end side end of the peripheral portion 49 to avoid damage or breakage due to abrasion generated,
The durability can be improved.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. A traveling device 6 having a pair of left and right traveling crawlers 5 traveling on the soil surface is arranged below the undercarriage 4 of the combine, and on the undercarriage 4, threshed grain culm supplied by being sandwiched by a feed chain 7 is provided. A threshing device 9 equipped with a grain tank 8 for selectively collecting the threshed grains and temporarily storing them is mounted.

At the front side of the threshing device 9, a weeding body 10 for weeding the raised culm from the front end position, a raising part 11 for causing the weeded culm, and a cutting blade part for cutting the caused cereal culm. A harvesting device including a transport unit 13 that transports the harvested grain stalks rearward to the feed chain 7, and a supply transport unit 14 that takes over the transported grain culm from the scrape transport unit 13. 1 is configured to be raised and lowered on the soil surface by a telescopic cylinder 15 driven by hydraulic pressure.

An operation device 16 for controlling the operation of the combiner and an operation seat 17 for this operation are provided on one side of the reaper 1, and the grain tank 8 is arranged behind the operation seat 17. , An engine 18 is mounted below the engine 18. The harvesting machine 19, the traveling device 6, the threshing device 9, the operating device 16, the engine 18, etc. combine the body 19 of the combine.
Is configured.

The reaper 1 includes a turret 2 fixed above a transmission case 20 mounted on the front end of the chassis 4.
The rotation transmission shaft 22 of the cutting device 1
The upper end is rotatably supported around the support shaft 22 and the lower end thereof is connected to the central portion of a horizontally long cutting gear case 24. The cutting frame 25 extends forward from the lower surface of the cutting gear case 24. This cutting frame 2
The cutting blade part 12 is attached to the middle part of the cutting piece 5, and the weeding body 10 is attached to the front end part of the cutting blade part 12.

At the rear end of the cutting frame 25, a cutting device 1 is mounted.
The suspension support arm 26 which suspends the lower side of the vehicle is fixed, and the front end of the front suspension link 27a and the rear link 27b are connected between the suspension support arm 26 and the front end of the chassis 4 by pins. The cutting end portion 27 is rotatably supported by the rear end portion to form a cutting suspension portion 27, and the telescopic cylinder 15 is extended and contracted between the vicinity of a lower portion of the cutting transmission pipe 23 and the lower portion of the transmission case 20. Connect freely.

Power for driving the reaper 1 is transmitted from the transmission case 20 side to the rotating support shaft 22, transmitted from the rotating support shaft 22 to the reaping gear case 24 via the reaping transmission pipe 23, and is transmitted to the reaping gear case 24. 24, the raising portion 11, the cutting blade portion 12, the scraping transport portion 13, the supply transport portion 14, respectively.
And so on.

The raising portion 11 for raising the grain culm weeded by the weeder body 10 is provided in a raising case 40 in which raising lugs 39 are provided in the left and right direction in accordance with the number of cut culms.
Are arranged in a row, and the upper part is arranged obliquely rearward from the rear of the weeding body 10. The raising case 40 is constructed by combining a guide base 41 located on the rear side and serving as a guide for the raising lug 39 and a guide cover 42 located on the front side and serving as a cover for the raising lug 39. At 41, a lug guide 43 for raising and raising the raising lug 39 for raising the operation is raised and fixed over the entire length on the route side. A raising gear case 44 transmitted from the mowing gear case 24 is mounted on the upper rear side of the guide base 41, and a sprocket 46 is axially fixed to a raising shaft 45 protruding into the guide base 41 from the raising gear case 44. A plurality of raising lugs 39 are erected and erected at appropriate intervals on a raising chain 48 wound and stretched between an idle roller 47 bearing at the lower end position of the lug guide 43.

The guide base 41 extends from the side of the upper sprocket 46 to the upper end of the peripheral edge 49 of the lower floating roller 47 in the non-working side area of the raising lug 39 to prevent entrapment of straw waste. The notch is opened to prevent accumulation, and when the raising lug 39 enters the peripheral portion 49 from the notch portion, the upper edge of the peripheral portion 49 is arranged so that the peripheral portion 49 and the raising lug 39 do not interfere with each other. Is inclined rearward as a tongue-shaped portion 50, and the tip of the tongue-shaped portion 50 is further bent rearward to form a bent portion 50a.

The raising lug 39 is caused by the rotation of the raising chain 48.
When the rug guide 43 passes through the rug guide 43, it stands up and is held by the guide base 41 and the guide cover 42 so as to elevate the grain stem. The non-working side. In such a raising operation, chains are inherently easily stretched. Particularly, in a case where the chains are liable to be covered with mud or water such as the raising chain 48, the growth is remarkable.
With the help of the inclination direction of 0, the raising chain 48 is greatly slackened in the rearward direction until the raising lug 39 interferes with the tongue 50 of the lower peripheral edge 49 of the guide base 41 as shown in FIG. The loosening causes the raising lug 39 to move the tongue 5
0, the tongue 50
Is provided with a bent portion 50a at the tip thereof, so that the lug 39 prevents damage or breakage caused by wear caused by interfering with the edge of the tip of the tongue-shaped portion 50 as in the related art, thereby improving durability. Can be achieved.

In addition, a grain sensor 28 for detecting that the transported culm is interrupted and turning on the auto-lift mechanism R is disposed at an appropriate position in the transport path of the supply transport section 14 and suspending the suspension section 27. In the vicinity of the undercarriage 4 side pivot portion of the rear link 27b, the lift stop position U for stopping the raising of the mowing device 1 by the upward rotation amount of the post-suspension link 27b, and the mowing device 1 at a certain interval lower than the raising stop position U. A mowing position sensor 2 composed of a potentiometer or the like, which detects a transmission stop position P at which transmission of the threshing device 9 is stopped, is configured.

A mowing / clutching clutch lever 29 for manually turning on and off the transmission of the mowing device 1 and the threshing device 9, and a manual operation for performing the raising / lowering action of the mowing apparatus 1 and the steering and turning operations of the traveling direction of the traveling device 6. The power steering lever 30 is disposed on one side of the operation device 16, and is turned ON / OFF by turning on and off the clutch lever 29.
The cutting clutch switch 31 to be operated is disposed in the action path of the cutting clutch lever 29, and the retracting solenoid 32a is operated by operating the power steering lever 30 in the front-rear direction to cause the telescopic cylinder 15 to act to move the cutting device 1 up and down. And the mowing solenoid 32b are arranged appropriately.

A clutch control motor 33 for automatically turning on and off the transmission of the cutting device 1 and the threshing device 9, a cutting position sensor 34 for detecting the control position of the clutch control motor 33, and a cutting position sensor 34
And a clutch / disengagement clutch relay 35b for switching the clutch control motor 33 on and off and a clutch / disengagement clutch disengagement relay 35b.

A non-volatile memory for storing and setting an ascending stop position U of the auto-lift mechanism R which operates by detecting the absence of a cereal culm by the cereal culm sensor 28, and a transmission stop position P located at a certain interval below the ascending stop position U The memory 3 is built in a controller 36 that mainly performs operation control of a CPU provided near the operation device 16 and, as shown in FIG. 6, to an input side of the controller 36 via an input interface 37. The cutting position sensor 2, the cutting position sensor 34, the grain culm sensor 28, the cutting clutch switch 31 and the like are connected to each other, and a cutting solenoid 32a and a cutting solenoid 32b are connected to the output side via an output interface 38. Relay 35a with clutch release
And the clutch disengagement relay 35b and the like are connected to each other.

In the harvesting operation, when turning is performed to change the direction of the machine body 19 at a headland or the like at the field end, before the turning, the supply of the cutting device 1 is completed along with the end of the cutting of the trichomes. Since the transported grain culm of the transport unit 14 is interrupted, the grain culm sensor 28 detects the interrupted transported grain culm and turns on the auto-lift mechanism R, whereby the telescopic cylinder 15 is extended by the action of the reaping solenoid 32a. The cutting device 1 is pivoted upward about the rotation support shaft 22 and the cutting suspension portion 27 is rotated.
And increase by the action of.

In the ascent stroke of the mowing device 1, the non-volatile memory 3 is first provided by the mowing position sensor 2 which is operated by the rotation of the link 27b after suspension of the suspension portion 27.
, The transmission stop position P stored and set in step S1 is turned on, and the cutting / clutch disengagement relay 35b is turned on. With this ON, the clutch control motor 33 is rotated to stop the transmission of the cutting device 1 and the threshing device 9. Next, the transmission stop position P, in which the mowing device 1 is further raised and stored in the non-volatile memory 3, is set.
When the mowing position sensor 2 detects that it has reached the ascending stop position U which is higher than the fixed interval, the mowing device 1 is stopped from ascending.

The turning is performed together with the operation of the auto-lift mechanism R, and at the same time as the turning is completed, the mowing device 1 is lowered by manual operation of the power steering lever 30 and the next row is aligned. And continue the mowing work. At the time of such a mowing operation, for example, when the soil surface becomes soft and the turning which has been turned by the pivot turning is switched to the spin turning, etc., the turning speed becomes much faster because the turning speed is remarkably increased. 1 needs to be kept low, and when the traveling crawler 5 sinks, the rising stop position U of the reaper 1 needs to be raised. The position is changed and adjusted. At the same time as the change and adjustment, the storage setting position of the transmission stop position P can be automatically stored and set at a position lower by a certain interval before reaching the ascending stop position U. At the time of the work, the set positional relationship between the two is always kept accurately and simply at a fixed interval, and when the mowing device 1 is raised by the automatic lift mechanism R, the transmission of the mowing device 1 and the threshing device 9 is performed. No doubt it is possible to automatically stop.

Conversely, when the transmission stop position P is changed and adjusted, it is possible to store and set the ascending stop position U at a higher position at a certain interval based on the storage setting of the transmission stop position P.

[Brief description of the drawings]

FIG. 1 is a side view showing the entire combine.

FIG. 2 is a side view showing the entire raising case.

FIG. 3 is a front view showing a state in which a part of a cover of the raising case is removed.

FIGS. 4A and 4B are cross-sectional views of a part of the raising case, and FIG. 4A is a side view showing a normal state, and FIG.

FIG. 5 is an operation diagram showing a relationship between a lifting stop position and a transmission stop position when the mowing device is raised.

FIG. 6 is a block diagram showing a control relationship related to when the mowing device moves up and down.

[Explanation of symbols]

 39 Raising lug 41 Guide base 42 Guide cover 46 Sprocket 47 Idling roller 48 Raising chain 49 Peripheral edge

Claims (1)

[Claims] A plurality of raised lugs (3) are provided at appropriate intervals between a sprocket (46) fixed on the upper side of the guide base (41) and a floating roller (47) mounted on the lower end of the guide base (41).
9 is wrapped around a raising chain 48 which is erected and erected, and a guide cover 42 is superimposed on the front side of the guide base 41 at a grain stem raising portion, on which the raising lug 39 of the guide base 41 is not actuated. In the region, from the upper sprocket 46 side to the lower peripheral roller 47 of the lower floating roller 47
9 Open the notch to the upper end side, and when the raising lug 39 enters the peripheral edge 49 from the notch, the peripheral edge 4
A grain stem raising part characterized in that the upper end side of the peripheral part 49 is inclined rearward so as not to interfere with the raising lug 39.