JPH0144051Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a straw removal device for a threshing machine, which uses a straw removal chain and a chain rail attached below the straw removal chain to clamp the waste straw and transport it rearward. It is something.

The straw discharged from the handling chamber of the threshing machine contains grains caught in it, and in order to collect these grains, conventionally a standing wall was installed in the straw passageway above the fourth exit to remove the grains. By bringing the waste straw being transferred into contact with the vertical wall, the grains in the waste straw are separated and dropped and collected at the fourth port. However, since the above-mentioned standing wall is fixed and the height of the standing wall is constant, for example, if the standing wall is set high, if the amount of straw to be removed is large, the transfer of the removed straw may be blocked or the posture of the removed straw may be disturbed. However, if the height of the vertical wall is set low, the straw cannot come into contact with the vertical wall when the amount of straw to be removed is small, and therefore the straw removal effect is impaired. There were deficiencies such as insufficient implementation.

The present invention aims to improve the above-mentioned defects, and focuses on the fact that the chain rail, which is installed below the straw removal chain to hold and transfer the waste straw, moves up and down depending on the amount of waste straw. Taking advantage of this, by skillfully connecting the hanging plate facing the straw transfer passage and the chain rail using a connecting member, the hanging plate is displaced as the chain rail moves. It is something.

Hereinafter, the structure of the present invention will be explained based on the drawings. Reference numeral 1 is a combine harvester chassis supported by a traveling crawler 2 and having a reaping frame 3 mounted on the front.
A threshing machine 4 is mounted on the front part of one side of the chassis 1, a driving panel 5, a driver's seat 6, etc. are erected on the other side, and an engine is mounted behind it. The reaping frame 3 includes a combing case 7, a guide member 8 for scraping the base of the grain culm, a trailing chain 9, a star wheel 10, a cutting blade 11, a stock lifting chain 12, a tip lifting chain 13, etc. These operating parts are connected by a transmission mechanism as appropriate from a gear case 15 provided above the rear part of the reaping frame 3, so that the power of the engine is transmitted to each of the above-mentioned operating parts via the gear case 15. It's getting old. The gear case 15 has a horizontal support column 1 that is erected on the chassis 1.
a, and the entire reaping frame 3 moves up and down around the support cylinder of the gear case 15 by the back and forth operation of a hydraulic cylinder 16 provided between the chassis 1 and the reaping frame 3. It is configured as follows. An air cylinder 16 is interlocked with the hydraulic cylinder 16, and the air generated by the air cylinder 16 is used to clean the dustproof screen of the winnowing machine.As shown in FIG. 16, 17 are cylinder parts 16a, 1
7a and piston portions 16b and 17b, respectively. 18 is the suction port of the air cylinder 17;
Reference numeral 19 denotes a pressure feed port, each of which is equipped with a check valve.When the hydraulic cylinder 16 is in operation to lift the reaping frame 3, air is sucked in from the intake port 18, and when the hydraulic cylinder 16 is in operation to lower it, air is forced to be fed through the pressure feed port 19. ing. On the other hand, the cylinder cover 20 of the threshing machine 4 has a box-shaped sealed structure as shown in FIG. ing. Reference numeral 22 denotes a discharge pipe provided in the storage tank 20a, and the tip 22a faces the dustproof screen 23a provided at the suction port of the sorting winnower 23 from the inside outward, and a solenoid valve 24 is interposed in the middle part. There is. The solenoid valve 24 is connected to the operation panel 5
When the threshing clutch lever 25 is moved to the chain line position in FIG. 1, the clutch that drives the entire threshing machine 4 including the sorting winnower 23 is disconnected. When the lever 25 comes into contact with the switch 26 and the solenoid valve 24 is actuated, the discharge pipe 2 is opened.
2 is about to open. Then, when the reaping frame 3 is lowered, the air that was pressurized from the air cylinder 17 into the storage tank 20a via the pressure pipe 21 is blown out from the tip 22a of the discharge pipe by the cutting operation of the threshing clutch lever 25, and the dust-proof The dust attached to the screen 23a is blown away, and since the dustproof screen 23a is cleaned in this way, a good air suction and sorting effect can be obtained without clogging.

The guide member 8 shown in FIGS. 6 and 7 for scraping the stalk of the grain is an example in which the conveying protrusion 27a of the conveying belt 27 is formed at an upward angle of θ degrees with respect to the rotating plane A of the belt 27. The conventional conveying protrusion is provided along the rotating plane A of the belt, and when the stem culm is raked, the conveying protrusion bends downward due to downward resistance from the stem culm, and the raking function is sufficiently performed. This was devised in consideration of the problem that the conveying protrusion 27a had an upward angle θ, so that during the raking action, the downward resistance of the stem culm causes it to be in a posture almost along the rotation plane A. The aim is to improve the raking action of the stem culm.

The conveyor belt shown in FIG. 8 is a further improvement of the conveyor belt shown in FIGS.
9a and is formed to have a W-shaped cross section, and the conveyor belt 28 is placed between the groove portion 29b of the pulley 29 and the collar portion 2.
Since it is supported by 9a and 29a, even if the conveyance resistance of the stem culm is large, it will not be reversed or the belt will come off, and the raking and conveying action of the stem culm can be performed even better. It is.

Reference numeral 31 denotes a straw removal device connected to the rear of the feed chain 30, and a drive sprocket 32 provided at the starting end thereof is positioned above the fourth spout 33. 34 is a straw removal frame, and a roller 3 is installed at the end of the frame.
5 is rotatably supported on a shaft, and a straw removal chain 37 is suspended between the rolling wheels 35 and the drive sprocket 32. Reference numeral 38 denotes a chain rail provided below the straw removal chain 37, which is biased toward the straw removal chain 37 side.
During this time, the tip portion passes above the fourth opening 33 and is transferred rearward. Reference numeral 39 denotes a cutter installed below the end of the straw removal device 31, which cuts the straw that has fallen from the end of the straw removal device 31 and discharges it outside the machine. The chain rail 38 includes a pair of front and rear swing arm rods 40 that are pivotally supported on a mounting bracket 36 provided on the threshing machine frame.
40 and is biased toward the straw removal chain 37 side by springs 41, 41 fitted around the pivot shafts 40a of the swing arm rods 40, 40, and is supplied to the straw removal device 31. It is designed to oscillate in response to the amount of straw being removed. 42 is a sasari falling board,
Its base is attached to the pivot shaft 40a of the front swinging arm rod 40, and its upper end projects upward so as to face the straw tip passage. It has started to rise and fall in conjunction with the weather. In addition, the swing arm rod 40 has its pivot shaft 40
Since the point a is located in front of the support portion of the chain rail 38, the above-mentioned swinging motion can be performed smoothly.

Next, the operation and effect of the device of the present invention will be explained. The stem culm that has undergone the combing action in the combing case 7 is
The induction body 8 is guided to be scraped by the star wheel 10, etc., and is harvested by the cutting blade 11, and the rear feed chain 9
It was transferred to the rear, and the stock part was moved to the stock part lifting chain 12.
The tip part is held in the tip lifting chain 13 and lifted up. and both chains 1
The stem culms released at the ends 2 and 13 are immediately held by the feed chain 30 of the threshing machine 4 and are threshed while being transferred to the rear. At this time, the threshed waste straw contains some grains. The straw released from the feed chain 30 is transferred to the straw removal device 31 above the fourth port 33, and the straw is transferred to the rear while being held by the straw removal chain 37 and the chain rail 38, and the tip portion is transferred to the fourth port 33. While passing through the straw discharging passage through the upper part of the mouth 33, the tips of the ears come into contact with the cutting plate 42, and the grains held by the tips are sieved off as they pass over the cutting plate 42. It falls into the mouth 33 and is collected. At this time, for example, if the amount of straw being removed is large, the chain rail 38 swings downward, and the hanging plate 42 also moves downward, so the hanging plate 42 prevents the transfer of the straw and changes its posture. The separation and fall of the grains is carried out smoothly without any disturbance, and when the amount of straw to be discharged is small, the chain rail 38 swings upward, and in conjunction with this, the grain drop plate 42 also moves upward.
The hanging plate is surely brought into contact with the waste straw, and a good hanging effect is achieved. The waste straw from which the trapped grains have been removed as described above falls neatly from the terminal end of the straw removal device 31, is cut by the cutter 39, and is discharged outside the machine.

In this way, the present invention provides a threshing machine in which straw is held between a straw removal chain and a chain rail installed below the chain rail, and the straw is transferred. It is supported at the tip of the swing arm and is biased toward the straw removal chain by a spring, and a drop plate is attached to the shaft base of the swing arm, and its upper edge is protruded so as to face the straw removal passage. A threshing device for a threshing machine in which the burr falling plate is displaced as the chain rail swings up and down, and the chain rail and straw removal passageway oscillate up and down depending on the amount of straw being removed. By interlocking and connecting the hanging plate installed in the tray, the hanging plate automatically moves up and down depending on the amount of straw being removed.
When the amount of straw being removed is large, the hanging plate is displaced downward, so that the transfer of the removed straw is not blocked or the posture is disturbed, and when the amount of straw being removed is small, the hanging plate is displaced upward. By doing so, it has the effect of being able to reliably perform the shaving action by coming into contact with the waste straw.

[Brief explanation of drawings]

The drawings show an embodiment of a combine equipped with the device of the present invention, in which Fig. 1 is an overall side view of the combine, Fig. 2 is a side view of the straw removal device, and Fig. 3 is a main part of the same. 3 is an explanatory view of the operation of the main parts of the same, FIG. 4 is an installation state diagram of the air cylinder for cleaning the winnowing machine, FIG. 5 is a sectional view of the threshing machine showing the winnowing device, and FIGS. FIG. 7 is an explanatory diagram of the derivative portion, and FIG. 8 is an explanatory diagram showing another embodiment of the same. 30...Feed chain, 31...Straw removal device,
37... Straw chain, 38... Chain rail, 4
0... Swinging arm rod, 42... Sasari falling board.

Claims (1)

[Scope of utility model registration request] In a threshing machine in which straw is pinched and transferred by a straw removal chain and a chain rail installed below the chain, the chain rail is supported at the tip of a swinging arm whose one end is pivoted to the machine body. A spring is used to urge the straw removal chain side, and a drop plate is attached to the shaft base of the swing arm, with its upper edge protruding so as to face the straw removal passage. A shaving device for a threshing machine in which the shank is displaced as the chain rail swings up and down.