JPH06245628A - Threshing feed chain of combine harvester - Google Patents

Abstract

PURPOSE:To eliminate the interference between a feed chain of a threshing apparatus of a combine harvester and a reaped culm transfer apparatus in the case of expanding the chain by turning outward. CONSTITUTION:A culm root guiding member 8 to receive the root part of a culm for transferring the culm from a culm transfer apparatus 5 of a reaping apparatus 4 is integrated to the frame of the side of a feed chain 3 laterally expandable outward from a threshing apparatus 2.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a combine threshing feed chain.

[0002]

2. Description of the Related Art In a transfer take-over portion of a cut grain culm between a grain culm transfer device on the reaping device side and a feed chain on the threshing device side, a guide body for transferring the corn culm is provided. Since it is provided by projecting from the grain culm transporting device side of the reaping device to the feed chain side, the configuration form is likely to be limited,
In particular, in the case where the feed chain is a mode in which the grain culms are placed on the upper side surface and sandwiched and conveyed, and it is possible to expand outward, this guide body interferes with this guide body and prevents the expansion of the feed chain. Not easy.

[0003]

SUMMARY OF THE INVENTION The present invention cuts a feed chain 3 of a threshing device 2 for threshing while placing a stock basin side of a grain culm on the upper side face and sandwiching and transporting the grain with a pinching rod 1. A hinge 6 is set near the end of the grain culm transporting device 5 for transporting the harvested grain culm in the device 4, and the hinge 6 is provided so as to be able to expand outward from the stocker side with respect to the handling room 7 of the threshing device 2. A stock base guide body 8 for receiving and taking over the stock base part of the grain culm conveyed from the grain culm conveying device 5 along the outside of the starting end portion of the chain 3,
This is a combine threshing feed chain configured so as to be developed integrally with this feed chain 3.

[0004]

In the mowing operation, the grain culms to be mowed by the reaping device 4 are taken over from the grain culm conveying device 5 to the feed chain 3 and are nipped and conveyed between the stalks 1 and.
Threshing action is received in the handling room 7. In this take-over part, the stock basin side of the culm which has reached the end of the culm carrier device 5 is placed on the feed chain 3 and the stock guide body 8 and is sent to the pinching rod 1 side, Even if there is a change in the length or the like of the culm, the attitude of the grain culm engaged and conveyed at the start end of the feed chain 3 can be maintained constant, and stable and accurate transfer of the grain culm can be performed.

Further, such a feed chain 3 is expanded to the outside around the hinge 6 at the time of maintenance of the threshing device 2 and the like, but the stock guide 8 is constructed integrally with the feed chain 3. Since it is unfolded, it is difficult to disturb the unfolding of the feed chain 3 and the configuration can be simplified.

[0006]

EXAMPLE A combine has a threshing device 2 mounted on a chassis 10 having a crawler traveling device 9, and supports a reaping device 4 and a culm transporting device 5 for transporting slaughtered culms to the threshing device 2. The grain tank 11 for accommodating the grains to be threshed by the threshing device 2 and the grain-removing auger 12 for taking out the grains from the grain tank 11 are mounted, and further, the operation platform 13 and the cockpit 14 are provided on the front one side. , And engine E etc. are mounted.

The threshing device 2 has a feed chain 3 stretched in the front-rear direction along one side of a handling chamber 7 in which a handling barrel 15 is rotatably mounted, and an upper side of the feed chain 3. And a feed rod 3 along with
The handling room 7 while transporting the grain culls which are sandwiched between the stalk and the sandwich rod 1.
It is to thresh inside. 16 is a threshing net under the handling room 7, 17 is an oscillating sorting shelf for sorting while receiving and oscillating and transporting threshing, 18 Kara-mino, 19 a sorting air passage, 20 a suction dust collector, 21 a grain removing In the device, the threshed culm discharged from the end portion of the feed chain 3 is sent to the rear culm cutter 2
It is transported to the second culm processing device.

The pinching rod 1 is provided along the upper side of the handle, while the feed chain 3 is stretched along the lower side of the handle. A chain frame 23 for tensioning the feed chain 3 has a hinge 6 inside the front end portion, is located in front of the threshing device 2, and is attached to a support frame 24 on the threshing frame, the chassis 10, or the like. The
The hinge 6 is horizontally expanded around the hinge 6. 25
Is a guide provided inside the chain frame 23 and can fix the position of the chain frame 23 by guiding the guide on the side of the threshing frame. Reference numeral 26 is a guide plate provided inside the chain frame 23, which can be fitted along the bottom of the handling opening of the handling chamber 7 and can slide and guide the lower surface of the grain culm conveyed by the feed chain 3. 27 is a locking tool,
It can be engaged with the locking tool 28 on the threshing frame side, and keeps the transporting posture position of the chain frame 23 fixed. 29 is a chain cover that covers the outside of the feed chain 3.

The stock guide 8 is the chain frame 23.
Is attached to the front part of the feed chain 3 and is provided along the outer side of the front end part of the feed chain 3 so as to support and guide the root side of the grain stem placed on the upper surface of the feed chain 3 from below. It is composed of a member such as a leaf spring shape or a round bar shape, and the tip end portion thereof is configured as a free end near the front end portion of the pinching rod 1 toward the rear side. Reference numeral 30 is a bracket for attaching the lower end portion of the stock guide body 8 to the chain frame 23.

The reaping device 4 is attached to a reaping frame 32 which is supported on the transmission case 31 in the front part of the chassis 10 so as to be vertically rotatable, and is raised by a grain culm elevating device 33 in the front part. The grain culm is scraped by the scraping device 34, and the cutting blade device 35
In this configuration, the harvested grain culm is collected by the collecting and transporting devices 36 and 37 to the rear side and transported to the grain culm transporting device 5 in the upper rear part.

The grain culm transporting device 5 includes a cutting frame 32.
Conveyor chain 3 that is installed above the conveyor and clamps and conveys the stock section.
8 and a conveying lug 39 that conveys the spike portion side by lug engagement, and the like, and is configured such that the front end portion can be rotated up and down to change the take-over length of the grain stem. The hinge 6 of the stock guide body 8 is provided at a lower rear portion near the rear end of the transport chain 38. In addition, the feed chain 3 is moved around the hinge 6 by locating the start end of the feed chain 3 or a sprocket 40 around which the feed chain 3 is wound near the rear end of the transport chain 38. The position is set so that it does not contact the chain 38 when it is deployed and rotated outward.

Reference numeral 41 denotes a pinching bar of the grain culm transporting device 5, which faces the outside of the transport chain 38. 42 is a sprocket around which the rear end portion of the transport chain 38 is wound, 43 is a stock foot holding rod, which is attached to the transport frame on which the transport chain 38 is stretched, with its tip end facing the outside of the start end portion of the feed chain 3. The root portion of the grain culm that is projected and conveyed by the conveyance chain 38 is guided downward so as to be pressed against the upper surface of the feed chain 3, the grain culm guide body 8 or the like. Even when the feed chain 3 is expanded and rotated outward as described above, the tip end of the stock foot pressing rod 43 has the hinge 6
Since it is closer to the side surface of the feed chain 3 on the front side than that, they are separated from each other without making contact.

Reference numeral 44 designates a take-over presser bar, the base of which is vertically rotatable at the rear end of the pinching bar 41 of the grain culm carrier 5.
A tension is applied by a spring so as to rotate downward, and the tip side is applied along the upper side of the starting end portion of the feed chain 3. Therefore, the grain culm that is transferred from the transfer chain 38 to the upper side of the feed chain 3 is pressed from the upper side, and this transfer is smoothly carried out. Further, when the feed chain 3 is expanded and rotated around the hinge 6, the take-up holding rod 44 is temporarily rotated upward against the spring so that the chain is expanded so as not to get in the way. You can

Reference numeral 45 denotes a socket for supporting the hinge 6 portion, which is attached to the support frame 24 so that the hinge 6 can be fitted and rotated from the upper side, and the feed chain 3 can be attached and detached together with the chain frame 23. It is designed to be possible. The transmission mechanism from the engine E to each part is provided so as to drive the crawler traveling device 9 by belt transmission of the output shaft 46 taken out from the engine E and the input shaft 47 of the transmission case 31, and the output. A belt is transmitted between the shaft 46 and the input shaft 48 on the front side of the threshing frame,
To transmit each part of the threshing device 2. In addition, the transmission case 31
The reaping input shaft 49, which is variably transmitted from a part of the pedestal via a transmission, etc.
Each part of the reaping device is transmitted through the transmission mechanism in 2 to transmit the grain culm conveying device 5.

Near the suction dust collector 20 at the rear of the threshing frame, a power take-off shaft 50 interlocked with the transmission system of the dust collector 20 is provided, and the rear end portion of the unfolding feed chain 3 is wound. When the coupling of the sprocket 51 is configured to be detachable, and when the feed chain 3 is pivoted to the handle side and closed, the coupling of the sprocket 51 is fitted to the power take-off shaft 50 to The state of 3 transmission is performed.

The transmission to the reaping device 4 and the grain culvert transporting device 5 in such a transmission mechanism is carried out through the transmission mechanism in the traveling transmission case 31 which drives the crawler traveling device 9, so that the traveling transmission is carried out. By driving the hydraulic continuously variable transmission HST on the input shaft 47 of the case 31, it is possible to continuously change the speed from the neutral position to the forward rotation high speed and the reverse rotation high speed, so that the crawler traveling device 9 can be switched between forward and reverse. There is.

A one-way clutch (ratchet) 52 is provided as shown in FIGS. 5 and 6 in order to prevent reverse rotation of the reaping input shaft 49 transmitted through the transmission system path of the hydraulic continuously variable transmission HST. It is provided. The one-way clutch 52 is provided between the reaping input shaft 49 that is interlocked with the belt 53 from the traveling transmission case 31 side and the pulley 55 that is on the reaping input shaft 49 and interlocks with the belt 54 toward the reaping device 4 side. , Is transmitted from the reaping input shaft 49 only in the forward rotation direction of the pulley 55. Reference numeral 56 denotes a pulley integrated with the reaping input shaft 49, around which the belt 53 is wound. 67 is a bearing boss provided on the chassis 10.

In such a one-way clutch 57, a one-way clutch 57 roller is interposed by forming a cone-shaped inclination angle between an inner ring 66 integrally rotating with the shaft 49 and an outer ring 58 integral with the pulley 55. The inner ring 66 and the one-way clutch 57 are connected to the outer ring 58.
Is movable in the thrust direction together with the pulley 55.

A shaft 59 which is rotatable around the pulley 55.
When the distance between the outer ring 58 and the inner ring 66 of the one-way clutch 57 increases by axially moving and operating the shifter arm 60, the clutch wire 61, the return spring 62, etc., the forward rotation is cut off and the mowing is performed. Stop transmission to device 4 etc. When the one-way clutch 57 is pressed by moving the shaft 59 to the opposite side to reduce the distance between the outer ring 58 and the inner ring 66, the one-way clutch 5 is pressed.
7 becomes operable, and the forward and reverse transmissions of the reaping device 4 etc. are turned on. In this way, the one-way clutch 57 can also serve as a transmission clutch for the harvesting device 4 and the like.

In FIG. 7, a point different from the above example is that the one-way clutch 52 as described above also serves as an actuator for detecting the load of the reaping device 4 and the like, and a shaft 59.
Movement of the arm 63 is transmitted to the arm 63 swinging around the fulcrum 64, and the swing of the arm 63 is further transmitted to the limit switch 6.
5, or a potentiometer or the like to detect the transmission load when driving the reaping device 4 or the like. When the load changes, the inner ring 66 and the outer ring 58 of the one-way clutch 52
Is offset in the thrust direction. This deviation amount is detected by the limit switch 65 and the like.

[Brief description of drawings]

FIG. 1 is a plan view of a combine.

FIG. 2 is a side view thereof.

FIG. 3 is an enlarged side view of a part thereof.

FIG. 4 is a plan view thereof.

FIG. 5 is a plan view of a part of the transmission device.

FIG. 6 is a sectional view of a part thereof.

FIG. 7 is a sectional view showing an example of another part thereof.

[Explanation of symbols]

 1 sandwiching rod 2 threshing device 3 feed chain 4 cutting device 5 grain culm transport device 6 hinge 7 handling room 8 stock guide

Claims (1)

[Claims] 1. The sandwich rod 1 with the plant side of the grain culm placed on the upper surface.
The feed chain 3 of the threshing device 2 to be threshed while being sandwiched and transported between the and, and the hinge 6 is set near the end of the grain culm transporting device 5 for transporting the harvested culm in the reaping device 4,
The threshing unit 2 is provided so that it can be deployed outward from the stock root side with respect to the handling room 7, and the root section of the grain culm conveyed from the grain culm conveying apparatus 5 along the outside of the starting end portion of the feed chain 3 is provided. A combine threshing feed chain in which the stock guide body 8 that receives and guides the takeover is configured to be developed integrally with the feed chain 3.