JPH0767443A - Driving gear for mobile agricultural machine - Google Patents

Abstract

PURPOSE:To carry out transmission in which a driving chain installed between a driving shaft and a transmission shaft is made to automatically and properly correspond to normal and reverse driving. CONSTITUTION:Chain tension members 74 and 75 are laid at the tension side and the slack side of a driving chain 69 for transmitting revolution of normally and reversely drivable driving shaft 59 to a transmission shaft 71, respectively and the tension members 74 and 75 are linked and connected through a rod 82.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive unit for a mobile agricultural machine such as an ordinary combine harvester, which is for harvesting grains such as rice, wheat and soybeans for threshing.

[0002]

2. Description of the Related Art For example, in a normal combine harvester, a drive shaft of a feeder house is provided so that it can be driven forward and backward, and the rotation of the drive shaft is controlled by a drive chain to cut a grain stalk auger, a rake reel and a cutting blade There is a means to transmit to each part.

[0003]

When the chain tension member is provided on the slack side of such a drive chain, it is necessary to change the tension direction of the tension member according to the forward and reverse drive of the drive chain.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a chain tension member is provided on each of the tension side and the slack side of a drive chain that transmits the rotation of a drive shaft that can be driven in the normal and reverse directions to a transmission shaft. When the tension force on the tension side of the chain is applied by the forward / reverse drive of the drive chain, it acts to push the other tension member through the rod to the slack side of the chain. Thus, the proper driving force can be transmitted with the tension member automatically corresponding to the forward and reverse driving of the driving chain.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of the feeder house, FIG. 2 is a side view of the whole, and FIG. 3 is a plan view of the feeder house. In the figure, (1) is a machine frame equipped with a traveling crawler (2) on a track frame (3),
(4) is a threshing unit equipped with an axial flow screw type handling cylinder (5), a processing cylinder (6), a sorting mechanism (7), etc., and is mounted on the machine stand (1), and (8) is a fried grain A grain tank for accumulating the grains of the threshing section (4) taken out through the tube (9), (1
0) is a hydraulic cylinder (1) in front of the lower part of the threshing section (4).
(1) A mowing section that is installed so as to be able to move up and down, (12) a driving cabin that includes a driver's seat (13) and a driving operation section (14), and is arranged in front of the grain tank (8).
Reference numeral 5) is an engine part provided behind the grain tank (8) and internally equipped with an engine (16), and (17) is a grain carry-out auger for taking out grains from the grain tank (8).

The mowing section (10) connects the grain mowing header (18) for receiving the uncut grain culm to the rear center of the header (18) to the threshing section (4). It is composed of a feeder house (19) for feeding, and a reel (20) for scraping uncut grain, a first and second reciprocating drive type cutting blades (21) (22), and a grain scraping auger ( 23) is provided in the grain header (18), and the cut grain culm to be taken into the header (18) is internally provided in the feeder house (19).
It is configured to be sent to the threshing unit (4) via 4) and threshing processing.

Further, a second reducing cylinder (25) is provided on the outer right side of the threshing section (4), and the second processed product is returned to the threshing section (4) through the processing cylinder (6) and re-threshed. And it is provided to re-sort.

As shown in FIGS. 4 to 9, the reaper (1
0) is for supporting the front side of the machine so that it can be freely rolled through a rotary fulcrum shaft (26). The upper horizontal frame (27) on the rear end side of the reaper (10) is mounted on the upper part of the rotary frame (28). The lower horizontal frame (31) on the rear end side of the mowing part (10) is engaged with and held by the stand (29) and the hook member (30). 33) is fixedly supported through the cutting unit (9).
Is supported integrally with the rotating frame (28) so as to be swingable right and left around the fulcrum shaft (26).

The fulcrum shaft (26) is a feeder house (1
9) The right frame plate (28a) of the grain feeding port (35) which is provided on the rotating frame (28) by projecting the tip on the right front plate (19a) of the grain intake port (34) opened on the front side. The fulcrum bearing plate (36) to be mounted at approximately the center of the fulcrum shaft (26)
It is fitted and supported via a centering bearing (37) so as to be horizontally rotatable. Then, vertical sliding rollers (38) (39) for assisting the cutting rotation are provided at the upper and lower positions around the fulcrum shaft (26) of the front plate (19a) as a roller holder (40).
(41) and the grain intake (3
The left sliding roller (42) for assisting the cutting rotation is provided near the center on the left outer side of the left front plate (19b) of (4).
3), and the pair of roller guide members (44) (44) in the form of a kite that secures the sliding rollers (38) (39) to the rear side surface of the right frame plate (28a) by bolts, A roller guide member (4) for fixing the left sliding roller (42) to the left frame plate (28b) of the feeding port (35) by bolting.
5) are fitted and supported respectively, and these rollers (3
8) It is constituted by (39) and (42) to assist the rotation of the reaping section (10) around the fulcrum shaft (26).

Further, a lateral frame (27) which is engaged with and held by the front surface of the feeder house (19) and the rotating frame (28).
And a constant rotation gap (t) are formed between them to prevent interference during rolling and to increase the opening ratio of the grain feeding port (35) during rolling.

Furthermore, the feeder house (19)
Axis (48) (49) between the mounting plate (46) fixed to the front left outer surface of the vehicle and the mounting base (47) fixed to the lower lower part of the left frame plate (28b) of the rotating frame (28). A rolling cylinder (50) through the shaft, and a long hole (52a) at the tip of a swing arm (52) that supports the feeder house (19) through a swing fulcrum shaft (51), and the cylinder (50). ) Of the piston rod (50a) of the pivot shaft (4
9) is engaged and connected, and a stroke sensor (55) is provided between the mounting plate (46) and the intermediate portion of the swing arm (52) via pivots (53) and (54), and a rolling cylinder ( The stroke sensor (55) and the stroke sensor (55) are arranged substantially parallel to the vertical direction in a side view to prevent dust and the like from entering, and the proximal end pivots (48) (53) are arranged close to each other in a cross-shaped view to detect them. It is configured to improve accuracy.

A hydraulic motor (56) for reaping drive that drives the supply chain conveyor (24) of the feeder house (19) forward and backward is provided with a motor at the front position of the threshing section (4) at the lower left outside of the feeder house (19). The motor (5) is installed on the stand (57) and protrudes to the left outside of the motor stand (57).
6) is fixed, and the sprocket (58) of the motor shaft (56a) is protruded to the right outside of the motor base (57).
The sprocket (60) of the conveyor drive shaft (59) on the feed end side of the chain conveyor (24) is interlockingly connected via the chain (61), and the core when the drive shaft (59) and hydraulic motor (56) are assembled. It is configured to absorb the misalignment and facilitate centering.

As shown in FIG. 10, the conveyor drum (62) on the feed start end side of the chain conveyor (24) is provided so as to be movable upward, and a spindle is provided inside the left and right side walls (19c) of the feeder house (19). A drum shaft (62a) is supported at the tip of a left and right swing arm (64) which is swingably mounted in the middle via (63), and the swing arm (6
4) The pivot shaft (65) at the rear end is projected to the left and right outside of the feeder house (19), and the compression spring (67) and the rod (6) are attached to the fixed spring seat (66) outside the feeder house (19).
8) supported vertically so that the spring (6
7) The drum (62) is pressed downward by pressure to maintain a constant clearance between the drum and the bottom plate of the house, while the pressure of the spring (67) increases when the flow rate of scraping into the house (19) increases. The drum (62) is pushed upward against this to prevent clogging.

Further, as shown in FIG. 11, the drive shaft (5
9) is on the right outside of the feeder house (19), and the reel (2
0), cutting blade (21), auger (23), etc. are connected to a mowing drive chain (69) that transmits driving force to each mowing part, and a transmission shaft supported by a bearing (70) behind the right front plate (19a). The driven sprocket (72) of the counter shaft (71) is linked to the driving sprocket (73) of the drive shaft (59) through the drive chain (69).

Furthermore, tension sprocket (74) (75), which is a chain tension member, is pressed from the inside of the chain (69) to the tension side and the slack side of the drive chain (69). The feeder house (19)
The support shafts (76) (77) outside the right side wall (19c) of the above support swingably support the proximal ends of the tension arms (78) (79) having the respective sprockets (74) (75) at their tips. One end side of the rod (82) is connected to the tip of the swing arm (80) integrally connected to the arm (78) of the shaft (81) and is integrally connected to the other arm (79) ( 83) The other end of the rod (82) is engaged and connected to the engaging body (84) at the tip, and the engaging body (8)
4) and a spring seat (85) at the other end of the rod (82), a compression spring (86) is provided so that one sprocket (74) is driven when the drive chain (69) is positively driven as shown by a solid arrow in FIG.
When the tension force of the chain (69) acts on the chain (69), the sprocket (75) on the slack side of the chain (69) is pushed up through the rod (82), and the chain (69) on the slack side automatically moves. On the other hand, when the tension of the chain (69) acts on the other sprocket (75) when the drive chain (69) is reversely driven as indicated by the broken line arrow in the figure, one sprocket (74) is pushed down. Then, tension is automatically applied to the slack side chain (69) to automatically prevent slack when the chain (69) is driven in the forward and reverse directions.

Further, caster holders (88) are fixedly attached to the front and rear positions of the outer lower part of the auger side plate (87) covering the right and left sides of the scraping auger (23), respectively, and can be detachably attached to the holder (88). Caster for removing and removing the reaping part (8
9) is attached.

The present embodiment is configured as described above, and when the soybean cutting work is performed and the crawler (2) on either side is riding on the soybean ridge and the posture of the machine is inclined, the detection of the horizontal sensor is performed. Based on the above, the rolling cylinder (50) is drive-controlled to horizontally hold the reaper (10).

Under the condition that the cutting unit (10) horizontally rotates horizontally about the rotation fulcrum shaft (26) during the rolling control, the vertical sliding roller (38).
(39) prevents the load from being twisted in the vertical direction, shares the supporting load of the mowing section (10) for safe support on the machine side, and the left sliding roller (42) prevents the mowing section (10) from collapsing. It prevents the load from twisting in the left-right direction and supports it stably on the machine side.

Further, the reel (20) of the reaper (10)
When driving the drive chain (69) that transmits the driving force to each part such as the cutting blade (21) and the auger (23), the chain (6) is driven.
The sprocket (74) (75) is automatically made to act on the slack side by the acting force of the tension side of 9),
The chain (69) can be securely prevented from loosening.

[0020]

As is apparent from the above embodiments, according to the present invention, the rotation of the drive shaft (59) which can be driven in the forward and reverse directions is transmitted to the transmission shaft (7).
The chain tension members (74) and (75) are respectively provided on the tension side and the slack side of the drive chain (69) that is transmitted to 1), and these tension members (74) and (75) are interlockingly connected through the rod (82). Because it is
By driving the drive chain (69) forward and backward, the chain (69)
When a tension force is applied to the tension member (74) or (75) on the tension side of the chain, the other tension member (75) or (74) is pressed against the slack side of the chain (69) via the rod (82). And the tension members (74) (75) for driving the drive chain (69) forward and backward.
A remarkable effect is achieved such that the driving force can be automatically and appropriately matched.

[Brief description of drawings]

FIG. 1 is a side view of a feeder house.

FIG. 2 is an overall side view of the combine.

FIG. 3 is an overall plan view of the combine.

FIG. 4 is a front view showing a feeder house.

FIG. 5 is a perspective explanatory view of a rolling portion.

FIG. 6 is a side view of a reaping unit.

FIG. 7 is a side view of the feeder house.

FIG. 8 is a side view illustrating a rolling portion.

FIG. 9 is a front explanatory view of a rolling portion.

FIG. 10 is an explanatory plan view of a drive chain section.

FIG. 11 is an explanatory diagram of a reaping drive system.

[Explanation of symbols]

(4) Threshing part (19) Feeder house (59) Drive shaft (69) Drive chain (74) (75) Tension sprocket (tension member) (82) Rod

Claims (1)

[Claims] 1. A chain tension member is provided on each of a tension side and a slack side of a drive chain that transmits the rotation of a drive shaft that can be driven in the forward and reverse directions to a transmission shaft, and the tension members are interlockingly connected via a rod. Characteristic mobile agricultural machine drive device.