JPS6040108Y2 - Combine harvester handling depth adjustment device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for adjusting the handling depth of the threshing section in the process of conveying the cut culm from the husk culm reaping section to the threshing section located behind the husk culm reaping section in a combine harvester.

Conventionally, the starting end of the upper and lower two-tiered culm conveyor conveys the culm cut by the cutting blade to the handling port of the threshing section by engaging the stem part or holding the stem part between them. and the terminal part is
In the handling depth adjusting device that is movable in the culm length direction of the delivery shell culm, the starting end shaft is coaxial with a scraping star wheel provided at the starting end.

In addition, since the threshing section is provided at the rear of the reaping section, the upper and lower shell culm conveyors that convey the grain to the threshing section supply chain provided on the side of the threshing section are installed diagonally from the center of the reaping section to the sides. Therefore, when adjusting the handling depth by rotating the upper and lower shell culm carriers around the starting end, when the upper and lower shell culm carriers are in the long culm position, the rear ends of the upper and lower shell culm carriers are in front of that in the short culm position. Since it is located far away from the threshing department handling port, there is a drawback that the delivery of the husk to the threshing department supply chain is delayed and it falls off.

In addition, there were some cases in which an auxiliary conveyor was moved in and out between the husk culm conveyor and the threshing section supply chain, but since it was necessary to link the movement of the auxiliary conveyor in and out with the movement of the upper and lower husk culm conveyors, the structure The drawback was that it became complicated.

Therefore, in the present invention, the driving side of the starting end of the upper and lower shell culm carriers is raked, the power is transmitted from the star wheel part through the rotational drive case, and the star wheel is provided outward from the axis of the star wheel, and the upper and lower shell culm carriers are The upper part is supported by the telescopic end of a handling depth adjustment drive device which is fixed to the reaping frame and whose expansion/contraction direction is determined, and as the handling depth adjustment drive device expands and contracts, at least the rear end of the lower culm transport body is supported. The purpose of the present invention is to move the threshing unit horizontally at a substantially right angle to the supply chain to solve the above-mentioned drawbacks.

The following description will be given according to the embodiment shown in the drawings. Reference numeral 1 denotes a threshing section placed on a chassis 3 on which a combine traveling device 2 is installed. A two-stage upper and lower shell culm conveyor, in which a lifting device 5 is disposed diagonally, engages the stem of the shell culm or clamps the stock base and transports the shell from slightly above the cutting blade 4 to the vicinity of the handling opening of the threshing section 1. 6 and 7 are installed obliquely.

The culm transport bodies 6 and 7 are connected to a bevel gear 10 in a reaping section fulcrum bearing 9 from a reaping section input shaft 8 which serves as a fulcrum for vertical movement of the reaping section.
11 to transmit power to the reaping transport drive shaft 13 mounted in the reaping transport drive shaft pipe 12, and the reaping transport drive shaft 1
The lower end of 3 passes through the conveyor drive bearing 14 and connects to the cutting blade crank 1.
5 is fixed and the cutting blade 4 is reciprocated, and at the same time, the rotation is transmitted to the worm 19 attached to the worm shaft 18 by the bevel gears 16 and 17 in the conveyance drive bearing 14, and the rotation is reduced by the worm gear 20 that meshes with the worm gear 20 to drive the conveyance drive. Axis 21
is transmitted to.

From the conveyance drive shaft 21, an upper and lower conveyor drive shaft 25 to which upper and lower conveyor drive sprockets 23 and 24 for rotationally driving the upper and lower shell culm conveyors 6 and 7 are fixed is rotated by the transmission of the chain 22.

The rotary drive case 26 containing the chain 22 is configured to be rotatable around the conveyance drive shaft 21, and the rear end of the lower culm conveyor 7 is moved laterally approximately parallel to the handling port. Handling depth adjustment drive 40 fixed to the reaping frame
It is supported by one telescopic end.

27 is a scraping star wheel attached to the upper end of the conveyance drive shaft 21, 28 is a stock decking plate, and 29 is an upper and a lower two-tier shell culm conveyor 6.7 that are integrated, with the terminal ends on the left and right sides. Upper and lower transport body tether fixed for horizontal movement, 3
0 is the threshing department supply chain.

The power input to the input pulley 31 connected to the prime mover rotates the reaping transport drive shaft 13 from the reaping section input shaft 8 via the bevel gear 10.11, moves the cutting blade crank 15, and rotates the bevel gear 16.17. Warm 1 through
Rotate the worm shaft 18 to which the worm 1 is attached.
The conveyance drive shaft 21 is driven by the worm gear 20 that meshes with the
, and the scraping star wheel 27 is rotated.

Further, the upper and lower conveyor drive shafts 25 are rotated by the chain 22 from the conveyance drive shaft 21, and the upper culm conveyor 6. The lower husk transport body 7 rotates and conveys the cut culm to the threshing section.

Reference numeral 32 designates a lifting drive shaft, and 33 designates a lower transport support arm that is rotatable about the vertical transport member drive shaft 25 and supports the starting end side of the frame of the lower shell culm transport member 7.

Reference numeral 34 denotes a retaining conveying claw attached to the upper shell culm conveying body 6.

Now, when the combine enters the planted culm group without operating each part, the planted culm will be raised by the culm lifting device 5,
The culm cut by the cutting blade 4 is transferred to a culm conveyor 6 in two stages, upper and lower.
7 engages the stem part, and the stock part is held between the stalks and conveyed to the handling port of the threshing part 1, and is threshed in the threshing part 1 while being held by the threshing part supply chain 30.

However, the gripping position of the threshing section supply chain 30 must be changed depending on the culm length of the grain culm.

Conventionally, various methods have been used to adjust the length, but in the present invention, the upper and lower two-stage shell culm carriers 6 and 7 are configured as described above, so that the imaginary line in FIG. As shown, the upper and lower conveyor drive shafts 25, which are the starting axes of the upper and lower shell conveyors 6 and 7, can be moved along an arcuate trajectory with the conveyor drive shaft 21 as a fulcrum and the rotary drive case 26 as a swingable arm. As a result, the terminal ends of the upper and lower two-stage shell culm conveyors 6 and 7 can move laterally approximately parallel to the handling opening of the threshing section, and the shell culm is removed at the transfer point where the shell culm is delivered to the threshing section supply chain 30. The culm stagnation phenomenon is eliminated, and the upper and lower shell culm conveyors 6 and 7
No matter where the grain is located, it is held in an orderly manner by the threshing section supply chain 30 and threshed.

In addition, the upper culm conveying body 6 that engages with and conveys the stem part of the culm, and the lower conveying body 7 that pinches and conveys the stem part, are arranged so that the cut culm is conveyed in the best posture. It is set with a certain opening angle toward the terminal end, and once it is clamped or engaged with the starting end of the shell culm carriers 6, 7, the terminal end of the shell culm carriers 6, 7 is set against the handling port. Regardless of where it is located, it is smoothly transported to the vicinity of the handling port and transferred to the threshing section supply chain 30.

In addition, the starting ends of the shell culm conveyors 6 and 7 are connected to the non-working side of the star wheel 27, that is, the threshing section supply chain 3, with the axis of the raking star wheel 27 (conveyance drive shaft 21) as the center.
0, it is provided to move back and forth in the direction of movement of the aircraft, and the rotation locus of the star wheel 27 and the shell culm carriers 6, 7
Since the working surfaces of the culm are always overlapped in plan view, the cut culm can be smoothly transferred from the star wheel 27 to the culm carriers 6 and 7 no matter where the culm carriers 6 and 7 are located. .

As described above, the shell culm conveyance can be carried out smoothly without any stagnation phenomenon at either the clamping start end or the terminal end of the shell culm conveyor, and there is no need to provide an auxiliary conveyor. It is a simple mechanism that can produce great effects.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention: Fig. 1 is a side view of the combine harvester, Fig. 2 is a partially omitted plan view of the reaping transport section, and Fig. 3 is a part of the power transmission mechanism to the transport body. FIG. 4 is a cutaway sectional view and a sectional side view of the main part. In the figure, 1... threshing part, 4... cutting blade, 5
...Culm lifting device, 6...Upper culm transporter, 7...Lower culm transporter, butt.
Reaping unit input shaft, 13...Reaping conveyance drive shaft, 15
......Mower blade crank, 21...Transportation drive shaft, 23, 24...Transportation drive sprocket, 2
5... Upper and lower conveyor drive shaft, 26... Rotation drive case, 27... Scraping star wheel, 29... Upper and lower conveyor body connection, 30. ...
...Threshing department supply chain.

Claims (1)

[Scope of utility model registration request] The upper and lower shell culm conveyor conveys the harvested shell culm rearward with the naked light clamping and ear tips engaged, gradually changes its posture to its sideways position, and delivers it to the threshing section supply chain 30 of the rear threshing section 1. 6
, 7 is movable in the direction of the shell culm body to be delivered.In the handling depth adjusting device, the rear end of the upper and lower shell culm conveyors 6, 7 is movable in the direction of the culm body. A shaft 21 is provided, the transport drive shaft 21 rotates around the transport drive shaft 21, and the transport drive shaft 21 has a vertical transport body drive shaft 25 on the free moving side.
A rotary drive case 26 having a power transmission device 22 to the upper and lower conveyor drive shafts 25 is provided, and the upper and lower shell culm conveyors 6 and 7 are integrally rotatable around the upper and lower conveyor drive shafts 25. The upper part of the upper and lower shell culm carriers 6.7 is supported by the telescopic end of a handling depth adjustment drive device 40 which is fixed to the reaping frame and whose expansion and contraction direction is determined, and when the handling depth adjustment drive device 40 expands and contracts, At least, the terminal end of the lower culm transport body 7 moves horizontally at a substantially right angle to the threshing section supply chain 30, and the vertical transport drive shaft 25 at the starting end moves back and forth in the machine traveling direction on the non-active side of the scraping star wheel 27. A handling depth adjustment device for a combine harvester, characterized in that: