JPH0111007Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, a dropper for a harvester has an operating plate having an elongated hole fixed at the center of rotation of the dropper, and a spring stretched between a slider guided by the elongated hole and a support member. This is already known from Japanese Patent Application Laid-Open No. 53-149563.

However, since the movement of the mover is extremely slow after the collected culm reaches a predetermined amount, the collected waste straw is gradually released, and it is released widely in the direction of movement of the aircraft and remains well-coiled. The drawback was that it could not be released into the atmosphere.

The present invention provides a dropper device for a harvester that uses the elasticity of a spring to collect a predetermined amount of waste straw, and when releasing it, can release it all at once, and can collect and release it in a well-organized state. A dropper for collecting and discharging waste straw is pivoted to a holder so as to be movable up and down, and a tension spring is provided on the dropper to elastically support the dropper in a culm receiving position. In the harvester, one end of the tension spring is
It is connected via a protrusion to the tip of a link that is pivotally supported on the side of the rotation center of the dropper, and the holder receives the protrusion and allows movement while braking, and from the rotation center of the dropper. A regulating member is provided which is inclined so as to be successively spaced apart, and when a predetermined amount of culm collection is reached, the protrusion is removed from the end of the regulating member and moves to the rotation center side of the dropper together with the link. It is something to do.

An embodiment of the present invention will be explained with reference to the drawings.
Reference numeral 1 denotes a threshing device mounted on the base of a combine harvester having a traveling device 2, and a straw conveying belt 3 is provided on the top plate of the dust removal chamber that protrudes from the rear of the culm removal port to the rear of the machine. A desk cutter 4 is attached to the rear surface of the threshing device 1.

Reference numeral 5 denotes a knotter in which a packer 6, a needle 7 which also serves as an S-shaped ejection rod, a string holder 8, and a building 9 are attached to a transmission case 10, and a collecting culm between the needle 7 and the building 9 is provided. The portion 10a is opened upward, and the transmission case 10 is attached to a recess 4a provided in the rear wall of the desk cutter 4.

11 is an L-shaped support pipe whose base is fixed to the rear wall of the desk cutter 4 near the base of the stock;
2 is a plate-shaped dropper that serves as a guide plate forming a straw removal passage 13 at the rear of the desk cutter 4 and collects and discharges waste straw in predetermined amounts, and a bracket 14 is fixed to the lower part of the rear surface. A core metal 15 fixed to the tip side and having a string outlet 15a is rotatably inserted into the end of the support pipe 11.

The rear upper part of the bracket 14 is loosely fitted into the support pipe 11, and the front end is fitted into the support pipe 11.
The holder 16, which is fixed to the bracket 14 and overlaps with the bracket 14, has an oblique regulating member 16a bent laterally at the lower part of the front end.
A boss 18a at the front end of the link 18 is rotatably supported by a pin 17 fixed at the rear lower part. There is a tension spring 2 between
0, and the tension of the tension spring 20 is adjusted by changing the number of washers 20a.

Further, the desk cutter 4 has a parallel rotating shaft 2.
A large number of star foil blades 23... and disc blades 24... are attached to the input pulley 3.
5 drives a shaft 27 via gears 25, 26, which shaft 27 drives an input shaft 28 of the notch cutter 5 via a universal joint and a feeder mounted on the top of the desk cutter 4. Lever 29 at the entrance
A switching plate 30 that opens and closes by is hinged,
A shutter 34 for opening and closing the straw removal passage 13 to the bundling device 4 is attached to the rear surface of the desk cutter 4 with a rotatable support shaft in a state where it is biased to a closed position.

Furthermore, a culm holder 31 is provided protruding from the rear wall of the desk cutter 4 on the side of the panicle from the knotter 5, and a support shaft 32 protruding rearward from the end on the stock side has a lower end as shown in FIG. Shooter 33 having stock receiving part 33a
is rotatably attached to the shaft.

Therefore, the operation of intermittent operation of power to the desk cutter 4 and the notch cutter 5, the switching plate 30 and the shutter 34 is performed.
In the switching operation, the base of the switching plate 30 on the ear side is provided with a step 37 that engages with the lever 29, and an arm 39 that engages and disengages with an arm 38 protruding from the shaft of the shutter 34. 25 is movably spline-fitted to the rotating shaft 22 and an electromagnet 40
The shifter 41 is moved in the axial direction by a shifter 41, which is not shown, and is returned to a neutral position by a spring (not shown).

In addition, when the input pulley 35 is provided on the ear side, the gear 25 moved by the shifter 41 is spline-fitted to the intermediate shaft 25a as shown in FIG.
Another gear 25b is attached to the rotating shaft 22.

Next, to explain the operation, when shredding the waste straw sent backward by the waste straw conveyor 3, the lever 29 is rotated rearward and engaged with the step at the rear of the lever guide 29a to switch the switching plate 30. When opened, switch 42 is turned on.
As a result, the shifter 41 engages the gear 25 with the gear 43 of the rotating shaft 21, so that the waste straw is shredded by the desk cutter 4 and scattered on the field.

In addition, when bundling and releasing waste straw, lever 29
When the switch plate 30 is tilted forward and engaged with the front stepped portion of the lever guide 29a, the switching plate 30 automatically closes and the arm 39 pushes up the arm 38, so that the straw removal passage 13 is always closed as shown by the solid line in FIG. The shutter 34, which is biased to close, is shown in solid line in FIG.
Also, as shown by the chain line in FIG. 9, it is in a hanging position, the switch 44 is turned on, the gear 25 meshes with the gear 26, and the knotter 5 is driven, so that the straw passes through the upper part of the desk cutter 4 and flows into the straw removal passage 13. fell into
As it is, the culm guide 3 is attached to the culm collection part 10a of the knotter 5.
5a, the needle 7 is guided by the needle 7, and when the needle 7 is pulled in and focused by a predetermined amount, the door (not shown) senses this, and the one-turn clutch engages, causing the needle 7 to move clockwise in FIGS. 1 and 2. The building 9 and the string holder 8 are rotated 90 degrees in the direction to hang the string.
operates and knots, and the needle 7 moves counterclockwise.
The straw bundle is released backward while rotating 180 degrees and pushing open the culm guide 35a.

At this time, if the shooter 33 is set at an appropriate angle according to the culm length, the shooter 33 collects the waste straw while aligning the stock base and receiving the waste straw with its stock receiving part 33a and the culm support 31.

Furthermore, when the straw is collected and discharged by the dropper 12, when the lever 29 is engaged with the intermediate step of the lever guide 29a, the switching plate 30 remains closed, and the arm 39 of the shutter 34 rotates downward. Therefore, it rotates backward and assumes the position shown by the chain line in FIG. 1, and the gear 25 assumes the neutral position shown by the solid line in FIG.
The straw that fell and accumulated between the
Push backward.

Then, the dropper 12 rotates in the X direction against the spring 20 in FIG.
Since the tension spring 20 simply extends from the A position to the A' position where the holder 9 contacts the control member 16a of the holder 16, the tension spring 20 is easily rotated with a weak force to assume the culm support position.

However, as described above, the protrusion 19
When it comes into contact with the slope 16a' of the pin 17, the slope 16a' is inclined in a direction intersecting the radial direction of the rotation locus of the pin 17, so the protrusion 19 receives a strong braking force, and its moving speed decreases. noticeably slower.

In other words, the dropper 12 collects a predetermined amount of waste straw while rotating little by little, and when the protrusion 19 comes off the lower end of the control member 16a, the braking force disappears and the protrusion 19 moves to the "I" position. As it moves, the tension spring 20 contracts by i, so the dropper 12
rotates all at once and releases a focused stream of waste straw. At this time, the pin 17 is rotated to the U position, and the protrusion 19 is received by the support pipe 11.

When the straw on the dropper 12 runs out, the dropper 12 is pulled by the tension spring 20 and rotates upright, the boss 18a of the link 18 is received by the control member 16a, and the protrusion 19 is connected to the support pipe 11 and the control member 16a. It returns to position A shown by the solid line in FIG. 6, and returns to the next focusing start state.

At the time of bundling, the packer 6 sweeps all the waste straw that has fallen into the straw removal path 13 into the collecting culm portion 10a, so the dropper 12 maintains the above-mentioned upright posture and becomes the rear wall of the straw removal path 13.

Further, the knotter 5 may be attached to the rear of the threshing device 1 instead of the rear of the desk cutter 4.

Furthermore, the knotter may be provided with needles and knots on both sides of the conventional culm collecting section.

Since the present invention is configured as described above, the regulating member 16a is moved from the protrusion 19 until the amount of culms collected reaches a predetermined amount.
It is possible to secure a predetermined culm collection amount even with a weak tension spring 20 by moving the link 18 away from the center of rotation of the dropper 12 while braking and changing the posture of the link 18 to prevent the rotational moment relative to the dropper 12 from becoming small. When the amount of collected culms reaches a predetermined amount, the protrusion 19 comes off from the end of the regulating member 16a and the braking is released, and at the same time moves to the rotation center side of the dropper 12 together with the link 18. The tilted link is now in the same direction as the tension spring 20, and the tension spring 2
0 is weakened by shrinking, and the tension spring 20 can be set weakly as described above, the dropper 12 rotates at once to eject, and when the ejection is completed, only the tension of the tension spring is applied. It does not have a sudden return operation like those that counter the weight of straw collected in the culm,
Even though the dropper 12 is of a bullet-holding type, the collected waste straw can be discharged in a well-organized state without spreading greatly back and forth.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Fig. 1 is a side view of the combine with the front section omitted, Fig. 2 is a sectional view taken along line A-A in Fig. 3, Fig. 3 is a plan view of the dropper, Fig. 4 is a plan view, and Fig. 5 is a rear view. ,
Figure 6 is a side view of the same, Figure 7 is a bottom view of the same, Figure 8 is a bottom view of the same.
9 is a side view of the switching device, FIG. 9 is a perspective view of the same, FIG. 10 is a longitudinal sectional plan view, and FIG. 11 is a sectional view of another embodiment. 1... Threshing device, 4... Desk cutter, 5...
...Knotter, 13... Straw removal passage, 16... Holder, 16a... Control member, 18... Link, 19
...Protrusion, 20...Tension spring.

Claims (1)

[Scope of utility model registration request] A harvester in which a dropper 12 that collects and releases waste straw is pivoted to a holder 16 so as to be movable up and down, and a tension spring 20 is attached to the dropper 12 to elastically support the dropper 12 in a culm-receiving posture. In the machine, one end of the tension spring 20 is
It is connected via a protrusion 17 to the tip of a link 18 that is pivotally supported on the side of the rotation center of the dropper, and the holder 16 receives the protrusion 17 to allow movement while braking, and the dropper 12 A regulating member 16a is provided which is inclined so as to be sequentially spaced apart from the center of rotation of the protrusion 1.
7 comes off the end of the regulating member 16a and the link 18
A dropper device for a harvester, characterized in that the dropper device is configured to move toward the center of rotation of the dropper 12 at the same time.