JPH0314994Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, it has been known that a tying device is provided in the straw discharge section of a threshing device, and a dropper is provided in the bundle discharge section of the threshing device. Since the straw bundles are directly received and concentrated, there is a drawback that if the straw bundles are connected to the following straw bundles, the bundles cannot be separated when releasing the collected straw bundles.In order to improve this drawback, If a bundle carrier is provided to separate the released bundles, and a dropper is provided at the end of the bundle carrier, the dropper will protrude significantly to the rear, making the machine longer and creating an obstacle to machine rotation, which is another drawback. arise.

The present invention provides a knotter dropper for a harvester that can smoothly collect bundles while reliably separating the bundles, and can smoothly rotate the machine without the dropper protruding rearward from the bundle conveying device. In a harvesting machine in which a tying device is attached to a straw discharge part of a threshing device and a bundle conveying device is installed in a bundle discharge part of the tying device, the bundle conveying device is conveyed from the upper side. A rotating conveyor belt with a surface, and a space that can be held between the conveyor surface and the terminal rotating part.
and a guide rod that runs along the lower surface of the return side of the rotary conveyance belt with a focusing space in between, the base of which is pivotally supported on the machine frame below the conveyance start end of the rotary conveyance belt, and the base The present invention is characterized in that a dropper facing the circulating portion of the rotating conveyance belt is provided so that the transported bundles of straw are sent to the base of the dropper.

The embodiments shown in the drawings will be explained below.
Reference numeral 1 denotes a threshing device mounted on a combine harvester base 2 having a traveling device, and a straw discharge device 3 consisting of a clamping rail and a conveyance chain is installed above the dust sorting chamber at the rear of the culm discharge port. A desk-shaped cutter 4 is attached to the rear part of the cutter 4, and a binding unit is provided at the rear of the cutter 4, with a bundler 6 and a needle 7 on the lower side and a knot part 8 and a release arm 9 on the upper side, with a converging part 5 in between. A device 10 is installed.

Further, at the rear of the bundling device 10, there is obliquely installed a bundle conveying device 12 whose starting end faces the rear end of the collection guide plate 11 below the discharge arm 9 and whose terminal end faces the cut field diagonally rearward. The conveyance device 12 has a large number of claws 13
A rotary conveyance belt consisting of a conveyance chain 13 having a conveyor chain 13 with its upper side as a conveyor surface (under chain type), and the tips of the claws 13a... It is composed of a guide rod 14 that bends, then bends in the opposite direction, and then continues to descend.

The base of the plate-shaped dropper 15 is fixed to a support shaft 18 rotatably supported between a pair of left and right support arms 17 extending diagonally rearward from a support frame 16 at the bottom of the binding device 10. , on the support shaft 18,
Spring 2 wrapped around the left end when viewed from the rear
The dropper 15 is urged upward by rotationally biased by a spring 20b that lifts the arm 19 at the right end of the dropper 15, and a notch provided at the rear end of the dropper 15 has a lowering portion of the guide rod 14. are mated.

Further, the guide rod 14 is divided at a portion corresponding to the terminal turning portion of the claw 13a, and the mounting bracket 2
1 and 21 and bolts 22 and 22 in a detachable manner, and a detection switch 23 is installed slightly above the dropper 15 of the guide rod 14.

Further, the pins 26 of the solenoid 25 fixed to the support arm 24 projecting rearward from the support frame 16 are spaced apart from each other so that the bundle does not fall off even if the dropper 15 tilts downward without converging the bundle. It is directly below Arm 19.

In the above-mentioned apparatus, the waste straw discharged from the culm opening of the threshing device 1 is transported later by the waste straw conveying device 3 and is discharged from the rear end.

When this waste straw is to be shredded and distributed on the field, when the switching plate 27 is opened, the waste straw falls into the cutter 4 and is shredded. When the switching plate 27 is closed, the scraping tine 28 scrapes backward, and the pack car 6 inherits this scraping and scrapes into the converging section 5.

In the meantime, the root leveling plate 29 swings in the direction of the culm of the waste straw and strikes the root part to align it, and when a certain amount of waste straw is collected, the one-turn clutch is engaged and the needle 7 and the knot part 8 are activated. As a result, the straw bundles are knotted, and the discharge arm 9 discharges the straw bundles backward while removing the knots.

The released straw bundles are stopped by the claws 13a at the upper side of the conveyance chain 13, and are guided by the guide rod 14 and conveyed towards the rear mown field. Similar to the transfer process, the claw 13
Since the straw bundle a is kept in an upright position and transported by the guide rail 13c of the case 13b, the straw bundle is thrown out toward the middle part of the dropper 15.

The straw bundles sequentially discharged in this way are caught between the case 13b and the dropper 15, and even if the machine moves vertically or horizontally, they will not be disturbed or fall. Never.

In addition, as the amount of straw bundles increases, the dropper 15, whose tip was on the upper side, changes to the spring 20.
a and 20b, and when it becomes approximately horizontal, it is received by the pin 26 of the solenoid 25, and at the most proximal side of the dropper 15, the straw bundle is received by the receiving rod 30 erected on the dropper 15. It will be done.

On the other hand, the claw 1 at the terminal rotation part of the conveyance chain 13
3a and guided by the guide rod 14 toward the dropper 15, the straw bundle is turned on every time it passes the detection switch 23, and this detection signal is sent to the timer _T1 consisting of a monostable multi-wire, and the NOT
circuit and the count circuit C1, so when the number of bundles set by the counter circuit C1 is focused between the dropper 15 and the case 13b, the output is output from the counter circuit C1 and the solenoid 25
is activated, the pin 26 is retracted, and the dropper 15 rotates downward at once to release the collected straw bundles into the field. Immediately after the release, the dropper 15 rises under the tension of the springs 20a and 20b and returns to the bundle receiving position. Further, the count circuit C1 is reset by a reset circuit C2.

At this time, the following straw bundles are directed toward the base of the dropper 15 at the lower end of the terminal rotating part of the conveying chain 13, and the claws 13
Since the bundle is thrown by a, the bundle is thrown into the base of the rising dropper 15 after the bundle is discharged, and can be reliably collected without falling onto the field.

In addition, if a bundling error occurs due to various factors such as the string breaking or the string coming off from the holder at the knot, the straw transported by the bundle transport device 12 will be thinner than the normal bundle at the end of the transport. , the leading part of the straw mass that should be bundled does not come into contact with the detection switch 23 and is not detected, but when waste straw accumulates and a blockage occurs after _t0 seconds, the detection switch 23 enters the detection state, and this state continues, so a signal longer than the normal detection signal is input from the AND circuit to the timer T2 that ignores the small signal (signal that detected a normal bundle), and the timer T2 outputs it, so the alarm 3
1 is activated and issues an alarm.

Furthermore, the output of the timer T2 is the output of the solenoid 2.
5 is also input, so the dropper 15 rotates downward and the blockage is removed.

The operator then interrupts the work, eliminates the cause of the blockage, and then resumes work.

As described above, the present invention is a harvester in which a bundling device is attached to the straw discharge part of the threshing device, and a bundle conveying device is provided to the bundle discharge part of the bundling device, in which the upper side of the bundle conveying device is used as the conveying surface. It is composed of a rotary conveyance belt, and a guide rod that runs along the conveyance surface thereof and a space that can be held by the terminal rotation part, and runs along the lower surface of the return side of the rotary conveyance belt with a focusing space between them. A dropper is provided, the base of which is pivotally supported on the machine frame below the transport start end of the rotary conveyance belt, and the base faces the circulating part of the rotary conveyor belt, so that the transported straw bundles are sent to the base of the dropper. With this structure, the bundle conveying device can reliably separate the straw bundles released from the bundling device, but the rotating conveyance band and guide rod of the bundle conveying device can rotate the straw bundles at the end of the conveyance. The straw bundles are forcibly conveyed until the row is completed, and then dropped, and the straw bundles are held on the dropper along the bottom surface of the straw bundle conveyor at the terminal turning section of the bundle conveyor, and the straw bundles are forcibly fed in the opposite direction to the conveying direction. The dropper does not protrude backwards than the bundle conveyance device, which prevents the front and back balance of the aircraft from worsening and prevents the dropper from becoming an obstacle to the rotation of the aircraft. By forcibly feeding the straw bundles into the focusing space on the base side of the straw, the focusing space can be utilized without waste, and even if the ground clearance of the dropper is increased, the desired number of bundles can be collected.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a side view of the rear part of the combine harvester and the binding device, bundle release device, etc. attached to it, Figure 2 is a plan view of the main parts, Figure 3 is a rear view of the same, Figure 4 is an exploded perspective view of the dropper, FIG. 5 is a sectional view of the main part, FIG. 6 is a control circuit diagram of the bundle detection device, and FIG. 7 is a time chart of the same. DESCRIPTION OF SYMBOLS 1... Threshing device, 4... Cutter, 10... Binding device, 12... Bundle conveyance device, 13a... Claw, 1
4... Guide rod, 15... Dropper, 23... Detection switch.

Claims (1)

[Scope of claim for utility model registration] (1) A binding device is attached to the straw discharge part of the threshing device,
In a harvester having a bundle conveying device in the bundle discharge section of the bundling device, a rotary conveying belt whose upper side is a conveying surface of the bundle conveying device, and a gap that can be held between the conveying surface and the terminal rotation section are provided. The guide rods extend along the lower surface of the return side of the rotary conveyance belt with a focusing space in between, and the base is pivotally supported on the machine frame below the conveyance start end of the rotary conveyance belt. A knotter dropper for a harvester, characterized in that a dropper facing the circulating portion of the rotary conveyance belt is provided so that the transported straw bundles are sent to the base of the dropper. (2) The rotating conveyance belt is constituted by a chain having a large number of undulating pawls, and the pawls are raised from the upper side through the circulating section to at least the starting end on the return side to forcibly convey the straw bundles. A knotter dropper in a harvesting machine according to claim 1 of the registered utility model.