JP2607017Y2 - Harvester harvester - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a harvester, such as a combine or a binder, for cutting a culm by reciprocating a cutting blade to the left or right.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Application Publication No. Sho 60-7225, there is a technique of driving a traveling crawler, moving a cutting blade, continuously cutting a culm, and performing a harvesting operation. is there.

[0003]

The prior art The present invention is to provide an, in the case of providing a hydraulic pump and a hydraulic motor for driving the cutting blade, cutting
It is also necessary to install a hydraulic supply mechanism and a hydraulic tank dedicated to the blade , and there is a problem that the hydraulic drive structure of the cutting blade cannot be simplified, the function can be improved, and the manufacturing cost cannot be easily reduced.

[0004]

According to the present invention, a cutting blade is driven by a hydraulic cutting driving device including a pair of hydraulic pumps and a hydraulic motor to cut a culm and a hydraulic stepless transmission mechanism. in cutting apparatus of the oil cooler and harvester for driving the traveling crawlers provided hydraulic tank and the hydraulic port
Cutting drive circuit that connects the pump and hydraulic motor to a closed circuit
And the hydraulic tank is hydraulically connected via a check valve, an oil cooler and a hydraulic stepless transmission mechanism to supply hydraulic pressure to the hydraulic pump.
A circuit is formed, and there is no need to install a dedicated hydraulic tank, oil cooler, oil filter, etc. in the mowing drive unit that drives the cutting blade .
The oil from the ink is supplied to the cutting blade
The temperature of the oil supplied to the drive circuit and supplied to the drive circuit can be appropriately maintained, and the cutting blade hydraulic drive structure can be easily simplified, improved in function, and reduced in manufacturing cost.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is an explanatory plan view of a main part, FIG. 2 is an overall side view of the combine, and FIG. 3 is a plan view of the combine, where (1) is a track frame on which a traveling crawler (2) is mounted, and (3) is A machine frame installed on the track frame (1), (4) is a threshing unit in which a feed chain (5) is stretched to the left and a handling drum (6) and a processing drum (7) are built in, and (8) is A mowing section including a cutting blade (9) and a culm transport mechanism (10), (11)
Is a hydraulic cylinder that raises and lowers the cutting unit (8) via the main frame (12a) of the cutting frame (12), (13) is a straw processing unit that faces the end of the straw chain (14), (1)
5) is a grain tank for carrying the grains from the threshing unit (4) via a fryer (16), and (17) is the tank (15).
(18) is a cab provided with an operation section (19) and a driver's seat (20), (2)
Reference numeral 1) denotes an engine provided below the driver's seat (20), which is configured to continuously cut husks and thresh.

As shown in FIGS. 4 to 6, the cutting blade (9)
Is a triangular upper cutting blade (23) riveted to the upper knife bar (22) at a constant pitch, and a lower knife bar (2).
4) a triangular lower cutting blade (25) that is riveted at a constant pitch, and a left and right outermost support pipe (27) on the front side of the connecting horizontal pipe (26) of the cutting frame (12).
a) A cutting blade receiving plate (28) is stretched between (27b), and the upper cutting blade (23) and the lower cutting blade (25) are vertically symmetrically overlapped with each other to hold the blade on the upper surface of the receiving plate (28). (29) The upper and lower knife bar guide plates (30) and (31) are mounted so as to be slidable left and right via adjustment plates and the like.

The cutting blade (9) is provided in a double action type for driving both the upper cutting blade (23) and the lower cutting blade (25), and is provided on the right end side of the cutting unit (8). Left and right cutting blade crank (34a) of blade drive case (33)
(34b) through each of the crank rods (35a) (35b), and to the cutting blade stand (37) on the cutting blade base plate (36) via left and right swing fulcrum shafts (38a) (38b). One ends of the L-shaped left and right cutting blade arms (39a) and (39b) are linked and connected, and at the right end position of the cutting blade (9), the upper and lower knife bars (22) together with the upper and lower cutting blades (23) and (25).
The right and left cutting blade arms (39b) (39a) are rotatably supported by the fitting grooves (40a) (41a) of the upper and lower knife heads (40) (41) integrally riveted to (24). The bearings (42b) and (42a) are engaged and connected, and the cutting blade cranks (34b) and (34a) reciprocate the upper and lower cutting blades (23) and (25) in left and right opposite directions to cut the culm. Is configured.

As shown in FIGS. 5 and 6, the cutting blade drive case (33) is attached to a bracket (44) fixed to a horizontal transmission frame (43) at the tip of the cutting main frame (12a). A case mounting frame (4) having a U-shape in plan view, which is fixedly fixed to the lower end of the case (33) via a bolt (46) via the base (45).
7) is fixed, and the motor shaft of the hydraulic motor (49) fixed to the upper end of the drive case (33) of the hydraulic mowing drive (50) composed of a pair of hydraulic pumps (48) and the hydraulic motor (49). (49a) and the cranks (34a) (34)
b) The output shaft (51) to be mounted is connected to the output shaft (51) in the case (33) via a timing belt (52), while the mounting frame (47) and the cutting blade stand (37) are connected to each other by a connecting member (53). The hydraulic motor (4)
The cutting blade (9) is driven by the hydraulic output of (9). The anti-vibration member (45) is provided on the outermost support pipes (27a) (27) of the cutting frame (12).
b) and the intermediate support pipe (27c) and the receiving plate (28) are also interposed to support the front and rear portions of the entire cutting blade (9) in an anti-vibration manner.

The engine (21) is provided with the engine (2).
1) The engine radiator (54) for cooling the combustion chamber is disposed below the operation column (55) of the operation section (19) while being isolated from the engine radiator (54).
The inside of a seat column (56) that supports the upper surface is formed as an enclosure room (57) that is a substantially closed box-shaped engine room, and the engine (21) is disposed in the room (57). A sirocco fan (58) for blowing air to the radiator (54) to radiate and cool the radiator (54) is provided below the cab (18) between the seat column (24) and the operation column (23). It is arranged to reduce noise of the engine (21) and the sirocco fan for cooling the radiator.

An HST (59), which is a hydraulic stepless speed change mechanism for shifting the running speed, and a transmission case (60) are disposed at the left side of the sirocco fan (58). 57) The HST (59) and the drive shaft (63) of the sirocco fan (58) are interlockingly connected via a transmission belt (62) to the counter shaft (61) of the engine (21) projecting to the left outside from the above. The oil cooler (64) of the HST (59) is disposed on the front side of the radiator (54).

Further, a gear pump (48a) is used as a hydraulic pump (48) of the hydraulic reaping drive (50). As shown in FIG. 7, a hydraulic tank (65) of the HST (59) and a pump unit The pump (48a) forming (48b) is connected via a check valve (66) with a supply circuit (67) as a supply hose, and the hydraulic motor (49) forming a motor unit (49a) and the hydraulic motor (49) A drive circuit (68), which is a motor drive hose, connects between the pumps (48a) and a safety valve unit (6) in which a cutting blade emergency stop solenoid valve (69) and a relief valve (70) are provided in a parallel circuit.
9a) and the drive circuit (68) are connected to each other in a closed circuit by a circulation circuit (71).
8b) and motor unit (49a) and tank (65)
And a gear pump (4).
8a), the oil of the HST (59) is supplied to the hydraulic motor (49) to drive the cutting blade (9). The gear pump (48a) is an engine
(2) Using an engine gear pump that pumps lubricating oil
May be.

The operating solenoid (73) of the solenoid valve (69) is driven by the engine (21), the cutting clutch lever (74) is turned on, and the main speed change lever (75) is moved forward by the forward cutting operation. Only under the conditions, the motor (49) is driven by turning off the circulation circuit (71) by turning off the circulation circuit (71), and when the motor (49) is loaded with a certain load or more, the relief valve (70) is operated to operate the motor (49). (49) is configured to prevent the overload operation.

The present embodiment is constructed as described above, and the mowing clutch lever (7) after the engine (21) is started.
When the main gear lever (75) is moved forward during the forward harvesting operation with the input of 4), the solenoid valve (69) is connected to the circulation circuit (71).
Is shut off, and all the hydraulic pressure from the pump (48) is supplied to the motor (49) to drive the motor (4).
When 9) is overload driving, the relief valve (70) is operated by the pilot pressure of the hydraulic pressure to open the valve (70) to prevent overload and drive at a predetermined load. When the cutting clutch lever (74) other than the above is disengaged or when the main shift lever (75) is moved backward, the solenoid (73) of the valve (69) is excited to connect the circulation circuit (71). Then, the driving of the cutting blade (9) is stopped. During normal mowing drive
Closing between motor unit (49a) and pump (48a)
The hydraulic pressure circulates through the drive circuit (68) connected to the road to
The driving of (9) is performed, and the driving circuit (68)
When the hydraulic pressure becomes insufficient, the hydraulic tank (65)
These oils are supplied.

In this configuration, when the gear pump (48a) of the engine (21) is used , the hydraulic piping system can be simplified, and the oil temperature rises due to the use of the HST (59) oil. (64)
The heat balance of the hydraulic reaping drive device (50) can be maintained well, and the gear pump (48a) is arranged in the enclosed room (57) together with the engine (21).
By doing so , further noise reduction is promoted.

FIG. 8 shows an example of a configuration in which the oil that has passed through the oil cooler (64) of the HST (59) is supplied to the gear pump (48a).
a) Check valve (66), oil cooler (64), HST
(59) through the HST (59) and the oil cooler (64) in communication with the hydraulic tank (65).
Supply oil from hydraulic tank (65) to drive circuit (68)
This eliminates the need for a separate installation of the hydraulic supply mechanism of the cutting blade drive circuit (68) and the separate installation of an oil tank and an oil filter for driving the cutting blade (9). It is configured so as to achieve the improvement. Also in this embodiment, the driving circuit during driving of the cutting blade (9)
(68) when the hydraulic pressure becomes insufficient, the hydraulic tank
(65) oil and HST (59) and oil cooler (6)
4) to the drive circuit (68) through a predetermined load.
This is for driving the cutting blade (9).

As is apparent from the above, the cutting blade (9) is driven by the hydraulic cutting drive device (50) including the pair of hydraulic pumps (48) and the hydraulic motor (49) to cut the grain stalks. , HST (59) which is a hydraulic continuously variable transmission mechanism
The hydraulic pump (48) and the hydraulic motor (49) are closed in the harvester of the harvester that drives the traveling crawler (2) by providing the hydraulic crawler (2) with the oil cooler (64) and the hydraulic tank (65).
The cutting drive circuit (68) connected to the circuit has a check valve (6 ).
6) and a hydraulic tank (65) through an oil cooler (64) and an HST (59).
8) The hydraulic pressure supply circuit (67) is formed. And
There is no need to install a dedicated hydraulic tank, oil cooler, oil filter, etc. in the mowing drive unit that drives the cutting blade (9), and the oil from the hydraulic tank (65) of the HST (59) is removed.
Of the cutting blade (9) via an oil cooler (64) or the like
To the driving circuit (68).
The cutting blade (9) is configured to maintain an appropriate oil temperature, simplify the hydraulic drive structure of the cutting blade (9), improve the function, and reduce the manufacturing cost.

FIGS. 9 to 11 show a configuration example in which a hydraulic pump (48) for driving the cutting blade is separately provided, and the base end of the main cutting frame (12a) is connected to a vertical cutting pivot shaft. Left and right mowing holders (78a) (78b) to be held on the receiving stand (77) via (76) are provided on the machine base (3), and these holding tables (78a) (78b) on the machine base (3) are provided. )
Pump unit (48) of hydraulic pump (48A) between front parts
B) and the solenoid valve (6) on the left harvesting holder (78a).
9) and a safety valve unit (69a) having a relief valve (70),
1) a hydraulic pump (48) via a transmission belt (79);
A) The pump shaft (48C) of the AST is interlocked and connected to the hydraulic tank (65) of the HST (59) in the same manner as described above.
9) Further drive the pump unit (48B) via the oil cooler (64) and the supply circuit (67), and further drive the motor unit (49a) via the drive circuit (68) to the pump unit (48B). The safety valve unit (69a) is connected to the circuit (68) via the circulation circuit (71), and the oil that has passed through the HST (59) and the oil cooler (64) is supplied to the hydraulic motor (48A) by the pump (48A). 49) to drive the cutting blade, so that there is no need to separately install a hydraulic supply mechanism, an oil tank and an oil filter for driving the cutting blade, and to simplify the configuration. In addition to the above, the oil cooler (64) can suppress an increase in oil temperature and maintain stable performance. In this case, noise reduction can be promoted by disposing the pump (48A) in the enclosed room (57) as in the above-described embodiment.

[0018]

According to the present invention, the cutting blade (9) is driven by a hydraulic cutting drive (50) comprising a pair of hydraulic pumps (48) and a hydraulic motor (49). The stalks are harvested with a hydraulic stepless transmission mechanism (59), an oil cooler (64) and a hydraulic tank (6).
5) A harvesting device of a harvester that drives a traveling crawler (2) with a hydraulic pump (48) and a hydraulic motor (4).
9) to a cutting drive circuit (68) for connecting
A hydraulic tank (65) is hydraulically connected via a check valve (66), an oil cooler (64) and a hydraulic stepless transmission (59 ) to form a hydraulic supply circuit (67) for a hydraulic pump (48). There is no need to install a dedicated hydraulic tank, an oil cooler, an oil filter, etc. in the mowing drive unit for driving the cutting blade (9), and the hydraulic stepless speed change mechanism (59)
Oil from the hydraulic tank (65) of the oil cooler (64)
To the driving circuit (68) of the cutting blade (9)
Thus, the temperature of the oil supplied to the drive circuit (68) can be properly maintained, and the cutting blade (9) can easily achieve the simplification and improvement of the function of the hydraulic drive structure and the reduction of the manufacturing cost.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view of a main part.

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

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

FIG. 4 is an explanatory side view of the reaper.

FIG. 5 is an explanatory plan view of a cutting blade drive unit.

FIG. 6 is an explanatory side view of the cutting blade drive unit.

FIG. 7 is a hydraulic circuit diagram.

FIG. 8 is a hydraulic circuit diagram.

FIG. 9 is an explanatory side view of the cutting blade hydraulic pump unit.

FIG. 10 is an explanatory plan view of a cutting blade hydraulic pump unit.

FIG. 11 is a hydraulic circuit diagram.

[Explanation of symbols]

(2) Traveling crawler (9) Cutting blade (18) Drive circuit (48) Hydraulic pump (49) Hydraulic motor (50) Hydraulic harvesting drive (59) HST (Hydraulic stepless speed change mechanism) (64) Oil cooler ( 65) Hydraulic tank (66) Check valve (67) Supply circuit

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01D 67/00-69/03 A01D 34/00-34/408 A01D 41/12

Claims (1)

(57) [Scope of request for utility model registration] A cutting blade (9) is driven by a hydraulic cutting driving device (50) comprising a pair of hydraulic pumps (48) and a hydraulic motor (49) to cut the culm and to provide a hydraulic stepless. A harvesting device for a harvester that drives a traveling crawler (2) with a transmission mechanism (59), an oil cooler (64) and a hydraulic tank (65) is provided with a hydraulic pump (48) and a hydraulic motor.
Drive circuit (6) for connecting the motor (49) to a closed circuit.
8) a hydraulic tank (65) via a check valve (66), an oil cooler (64) and a hydraulic stepless transmission (59);
The by hydraulically connected hydraulic supply circuit of the hydraulic pump (48)
A harvesting device for a harvester, characterized in that (67) is formed.