JP3554144B2 - Mobile harvester - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mobile harvester such as a combine harvester, and more particularly to a mobile harvester having a hydraulic transmission that changes the rotation of an engine output shaft and transmits the rotation to a traveling unit.
[0002]
[Prior art]
In general, a mobile harvester includes a traveling machine body having a threshing device, and a pre-processing unit that is moved up and down by a hydraulic cylinder device with respect to the traveling machine body, and an output shaft of an engine mounted on the traveling machine body and a crawler. A hydraulic transmission (hereinafter, referred to as “HST”) that changes the rotation of the output shaft of the engine and transmits the rotation to the traveling unit is interposed between the traveling unit and the traveling unit having the traveling device. An oil tank for supplying and discharging oil is provided.
[0003]
That is, the power of the engine is transmitted from the engine pulley to the input pulley of the HST via the traveling belt, and the crawler traveling device is driven by the drive shaft of the transmission from the HST via the transmission.
[0004]
Incidentally, the HST is configured by combining an oil filter, a charge pump, a low-pressure relief valve, and a check & high-pressure relief valve between a pair of hydraulic pumps and a hydraulic motor connected in a closed circuit, and directly connects these to a transmission case. It was done.
[0005]
Then, in order to supply oil from the oil tank to the HST, a hydraulic pipe for driving the HST and wiring for controlling the supply of the oil are arranged through the front side of the support frame that supports the pre-processing unit that cuts and transports the grain culm. ing.
[0006]
[Problems to be solved by the invention]
However, in the conventional mobile harvester, the hydraulic pipe for driving the HST and its wiring are disposed through the front side of the support frame, so that the hydraulic pipe and its wiring are provided between the main frame supporting the pre-processing unit and the support frame. In order to prevent the wiring from being pinched, it is necessary to bend the hydraulic pipe in a complicated manner, and there is a problem that the piping work of the hydraulic pipe is complicated.
[0007]
Further, it is necessary to provide a holding member for preventing the hydraulic pipe from hanging down, and there is a problem that the structure and the number of manufacturing steps are increased.
[0008]
The present invention has been made in order to solve the above-described problems, and has been made so that a hydraulic pipe is not pinched between a pre-processing unit and a support frame, and piping work of the hydraulic pipe can be easily performed. It is intended to provide a mobile harvester.
[0009]
[Means for Solving the Problems]
Therefore, in order to achieve the above object, in the mobile harvester according to the present invention, a hydraulic cylinder is disposed between the traveling machine body (1) and the pre-processing unit (2), and drives the pre-processing unit (2) up and down. A hydraulic transmission device interposed between the device (10), the engine output shaft (13), and the traveling portion (14), for shifting the rotation of the engine output shaft (13) and transmitting the rotation to the traveling portion (14). (12) and an oil tank (15) for supplying and discharging oil to and from the hydraulic cylinder device (10) and the hydraulic transmission (12),
The front portion of the vehicle body (1), together with arranging the support frame (8) supporting the pre-processing unit (2), placing the oil tank (15) to the machine body lateral one side, the oil tank The hydraulic transmission (12) is disposed in front of (15) and on the left and right sides of the body with the support frame (8) interposed therebetween, and holes (8a, 8b) are formed in the support frame (8). A hydraulic pipe (17a, 17b) connecting the oil tank (15) and the hydraulic transmission (12) is projected forward from the oil tank (15) in plan view , and the hydraulic pipe (17a, 17b) is provided. ) Is bent toward the left and right sides of the fuselage and penetrates the holes (8a, 8b) , further extended forward of the fuselage and connected to the hydraulic transmission (12) .
[0010]
[Action]
Based on the above configuration, an oil tank (15) is disposed on one side of the traveling body (1), and the oil tank (15) is inserted into holes (8a, 8b) formed in the support frame (8). Hydraulic pipes (17a, 17b) connecting to the hydraulic transmission (12) are passed through. As a result, oil from the oil tank (15) is supplied to and discharged from the hydraulic transmission (12), the rotation of the engine output shaft (13) is shifted by the hydraulic transmission (12), and the output is transmitted to the traveling unit. (14).
[0011]
Note that the reference numerals in parentheses described above are for comparing the drawings, and do not limit the configuration of the present invention in any way.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0013]
FIG. 1 is a side view showing a mobile harvester according to a first embodiment of the present invention, FIG. 2 is an enlarged side view showing a main part of the mobile harvester, and FIG. FIG. 4 is a plan view of FIG. 3.
[0014]
In FIG. 1, the mobile harvester is provided with a pre-processing unit 2 at the front of the traveling machine 1 so as to be able to move up and down with respect to the traveling machine 1, and causes the grain stem to be raised, cut, and transported by the pre-processing unit 2. Threshing of grains is performed by a threshing device 3 mounted on the traveling machine 1.
[0015]
That is, the one pre-processing unit 2 is provided with the raising device 4, the mowing device 5, and the grain culm conveying device 6. The power transmission case 7 extends in the left-right direction of the traveling machine body 1, and power is transmitted to the raising device 4, the reaping device 5, and the like by a power transmission mechanism (not shown) inserted through the power transmission case 7. It is configured as follows.
[0016]
The transmission case 7 is supported by a support frame 8 attached to a front portion of the traveling machine body 1 and supports the pre-processing unit 2 by a main frame 9 connected to the transmission case 7. A hydraulic cylinder device 10 that moves the pre-processing unit 2 up and down is arranged between the main frame 9 and the traveling machine 1 as shown in FIG.
[0017]
A hydraulic pump 11 that supplies and discharges oil when rotating a Glen tank (not shown) and controlling the direction of the traveling body 1, and a hydraulic transmission that shifts the rotation of an engine (not shown) are provided on the other side of the traveling body 1. HST 12, a pair of left and right traveling crawlers 14 as traveling parts in which rotations shifted by the HST 12 are transmitted via a transmission 13 as an engine output shaft, and oil for supplying and discharging oil to and from the hydraulic pump 11 and the HST 12. The HST 12 includes a hydraulic pump (not shown) and a hydraulic motor (not shown).
[0018]
That is, the HST 12 is configured by combining a pair of hydraulic pumps and a hydraulic motor connected in a closed circuit with an oil filter, a charge pump, a low-pressure relief valve, and a check-and-high-pressure relief valve.
[0019]
The oil tank 15 is arranged on one side of the traveling machine body 1, and the HST 12 is arranged in front of the oil tank 15 and on the other side of the support frame 8. Further, between the oil tank 15 and the hydraulic pumps 11 and HST12, the hydraulic pipes 16a and 16b for operating the hydraulic pump and the hydraulic pressure for operating the HST penetrate through the holes 8a and 8b formed in the support frame 8. Pipes 17a and 17b are connected respectively.
That is, as shown in FIG. 4, the hydraulic pipes 16a, 16b, 17a, and 17b protrude forward from the oil tank 15 in plan view, and are bent toward the left and right sides of the machine body. It penetrates the holes 8a and 8b, further extends forward of the fuselage, and is connected to the HST 12.
[0020]
Since the mobile harvester of the present embodiment is configured as described above, the HST 12 obtains output rotation by operating the hydraulic motor by converting the input rotation from the engine into hydraulic pressure by the HST hydraulic pump. This output rotation is transmitted to the traveling crawler 14 via the transmission 13.
[0021]
The hydraulic pipes 16a and 16b connected to the oil tank 15 are rotated during maintenance and inspection of the Glen tank, the direction of the traveling machine 1 is controlled, and oil is supplied to and discharged from the hydraulic cylinder device 10 for preprocessing. When the unit 2 is driven up and down, oil is supplied to and discharged from the hydraulic pump 11. Similarly, the hydraulic pipes 17a and 17b connected to the oil tank 15 supply and discharge oil to and from the HST 12 when the transmission 13 rotates.
[0022]
Hydraulic pipes 17a and 17b for supplying and discharging oil to and from the HST 12 which transmits the rotation of the transmission 13 at variable speeds are provided so as to pass through the holes 8a and 8b of the support frame 8, and are provided to the hydraulic pump 11 from the oil tank 15. Since the hydraulic pipes 16a, 16b for supplying and discharging the oil are arranged so as to pass through the holes 8a, 8b of the support frame 8, the hydraulic pipes 16a, 16b, The hydraulic pipes 16a, 16b, 17a, and 17b do not hinder the vertical movement of the pre-processing unit 2 while preventing the hydraulic pumps 16a, 16b, 17a, and 17b from being caught.
[0023]
【The invention's effect】
As is apparent from the above description, according to the present invention, the oil tank is disposed on one side of the traveling vehicle body , and the hydraulic transmission is provided in front of the oil tank and on the other side of the vehicle body with the support frame interposed therebetween. Is disposed, and a hydraulic pipe connecting the oil tank and the hydraulic transmission is projected in a front view of the oil tank in a plan view and bent toward the other side of the fuselage to form a hole formed in the support frame. Since it penetrated, and further extended forward of the fuselage and connected to the hydraulic transmission , the hydraulic pipe was not pinched between the preprocessing unit and the support frame, and piping work of the hydraulic pipe could be easily performed.
[Brief description of the drawings]
FIG. 1 is a side view showing a mobile harvester according to a first embodiment of the present invention.
FIG. 2 is an enlarged side view showing a main part of the above.
FIG. 3 is a front view of the mobile harvester as viewed from the front of a traveling machine body.
FIG. 4 is a plan view of FIG. 3;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Traveling body 2 Pre-processing part 8 Support frame 8a Hole 8b Hole 10 Hydraulic cylinder device 12 Hydraulic transmission (HST)
13 Engine output shaft (transmission)
14 Traveling part (traveling crawler)
15 Oil tank 17a Hydraulic pipe 17b Hydraulic pipe

Claims (1)

A hydraulic cylinder device that is disposed between the traveling body and the pre-processing unit and that drives the pre-processing unit up and down, and is interposed between the engine output shaft and the traveling unit, and speed-changes the rotation of the engine output shaft. In a mobile harvester having a hydraulic transmission for transmitting to a traveling unit, and an oil tank for supplying and discharging oil to and from the hydraulic cylinder device and the hydraulic transmission,
In the front part of the traveling body, a support frame for supporting the pre-processing unit is arranged, and the oil tank is arranged on one side of the body left and right , and the oil tank is located in front of the oil tank and sandwiches the support frame. The hydraulic transmission is arranged on the other side of the aircraft left and right,
A hole is drilled in the support frame, and a hydraulic pipe connecting the oil tank and the hydraulic transmission is projected forward from the oil tank in plan view , and the hydraulic pipe is bent toward the left and right sides of the machine body. Bent and penetrated into the hole , further extended to the front of the fuselage and connected to the hydraulic transmission ,
A mobile harvesting machine, characterized in that:

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