JPS6332603Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention replaces the reaping clutch device, which was conventionally composed of a multi-plate friction clutch or a belt teletion clutch, with a hydraulic clutch, and by installing two hydraulic clutch devices in parallel, It serves both the role of a reaping clutch and a reaping gear shift. The hydraulic pressure for operating the hydraulic clutch device of the reaping clutch is taken out from between the hydraulic directional control valve for traveling and the hydraulic clutch type transmission device for traveling transmission of the traveling transmission device, and the hydraulic oil used for the traveling transmission is taken out from between the traveling hydraulic directional control valve and the hydraulic clutch device, and the traveling transmission is changed. The reaping clutch and reaping gear are interlocked to prevent the reaping clutch from engaging when the travel gear is in reverse.
Further, when the traveling gear is in the first forward gear, the reaping gear is at a low speed, but when the traveling gear is increased to second or third gear, the harvesting gear is automatically set to a high speed.

The purpose of the present invention is as described above, and the structure of the present invention will be explained based on the structure of the embodiment shown in the attached drawings.

FIG. 1 is an overall side view of the combine harvester. A weed splitting plate 4 is projected from the tip of the machine body, and the weeded grain culm is pulled up by the weed splitting plate 4 and by a device 5. While raising the lodging grain culm, etc., it is cut with the cutting blade 6 and transferred to the stock transfer device 7.
It is conveyed to the lower part of the vertical conveyance device 9 and handed over to the vertical conveyance device 9. The stock head is rapidly lifted up by the vertical conveyance device 9 and transferred to the feed chain 14 of the threshing device 15. The tip portion is transferred from the lifting device 5 to the upper conveying device 8, where it is engaged and conveyed and enters the handling drum 18 through the iron plate at the entrance of the handling drum of the threshing device 15. The stock is moved with its base part held by the feed chain 14, and the tip part is sloughed off by the handling teeth of the handling cylinder 18. 19 is a sorting device. The culm after threshing reaches the processing device 17 via the culm chain 16. Each of these components is mounted on a crawler-type traveling device 1, and a drive sprocket 20 is fixed to an axle 21 that protrudes from both sides of the traveling transmission case 2 to drive the crawler-type transmission. are doing.

A reaping mission case 3 is placed on a traveling mission case 2. Left and right steering clutch levers 12, 12 are provided on the steering comb 13, and a reaping clutch lever 11 is rotatably protruded next to the steering clutch levers 12, 12. The reaping clutch lever 11 allows a spool 26a of a reaping hydraulic directional control valve 26 shown in FIG. 2 to be operated by a wire.

Further, a travel gear shift lever 10 protrudes from the gear change guide plate 36 on the side of the seat 37, and the travel gear shift lever 10 operates the spool 27a of the travel hydraulic directional control valve 27 on the travel transmission case 2 by means of a wire. ing.

Figure 2 is a side view of the traveling transmission case 2 and the reaping transmission case 3, and Figure 3 is a hydraulic circuit diagram of the present invention.

In FIG. 2, four hydraulic clutch devices 28, 29, 30, 31 are installed in the traveling transmission case 2.
is enclosed, and the pressure oil discharged by the hydraulic pump 32 attached to the input shaft of the input pulley 22 is directionally controlled by the travel hydraulic direction control valve 27 to be applied to any of the four hydraulic clutch devices. When pressure oil flows to the hydraulic clutch device 28 and the clutch is in the engaged state, the third forward speed is obtained, and when pressure oil flows to the hydraulic clutch device 29, the second forward speed is obtained. When the pressure oil flows into the hydraulic clutch device 30, the first forward speed is obtained, and the hydraulic clutch device 3
The structure is such that a reverse speed can be obtained when pressurized oil flows through 1. The running speed of each stage is the left and right axle 2
1 and 21 to drive the drive sprockets 20 and 20 of the crawler type traveling device.

Power is transmitted from the engine to the input pulley 22 of the traveling transmission case 2 through a V-belt, and the driving force is transmitted to the hydraulic clutch device 2 through the counter shaft and gears.
8, 29, 30, and 31, the gears are changed to the axle 21, and the other is the drive shaft 3 in the reaping transmission case 3.
Drive 9. A high-speed hydraulic clutch device 25 and a low-speed hydraulic clutch device 24 are interposed between the drive shaft 39 and the output pulley shaft 38 in the reaping transmission case 3, and high-speed reaping can be achieved by engaging or disconnecting either hydraulic clutch device. The reaping clutch lever 11, which provides a reaping clutch device, is connected to the spool 26a of the reaping hydraulic directional control valve 26, and by moving the reaping hydraulic directional control valve 26 left and right, it is possible to change between high and low speeds even when the traveling gear is engaged. In both cases, the clutch is completely disengaged. Conversely, even if the reaping clutch lever is in the engaged state, the reaping device is automatically stopped when the traveling gear is set to neutral or reverse. Also, the oil passage 24a of the low-speed hydraulic clutch 24 is connected to the reaping hydraulic pressure directional control valve 26.
is interposed in between, and is further connected to an oil passage that enters the hydraulic clutch 30 of the first forward speed from the oil passage 24b.

Also, the oil passage 25 of the high-speed hydraulic clutch device 25
a, 25b are connected to an oil passage of a hydraulic clutch type transmission of the second forward speed and the forward speed shown in FIG.

From this, by simply leaving the reaping clutch lever on the connected side, the reaping device will stop when the gear shift lever is in neutral or reverse gear, and the reaping gear will automatically shift when the gear shift lever is in first forward gear. enters low speed and enters second forward speed. When you shift into 3rd gear, the reaping gear automatically shifts to high speed. The accumulator 33 is a high pressure relief valve 35, and the low pressure relief valve 34 is a high pressure relief valve. As shown in Fig. 2, since the traveling transmission case 2 and the reaping transmission case 3 are integrated in close contact with each other, the oil passage to the reaping transmission case 3 is also constituted by a mating surface oil passage or a penetrating oil passage. and piping is not configured.
Further, the lubricating oil of the traveling transmission case 2 is also used as the hydraulic oil, and the traveling transmission case 2 is also used as the operating shaft tank.

Power is transmitted from the output pulley 23 of the reaping transmission case 3 via a V-belt to the cutting blade 6 of the combine harvester, and the reaping conveyance device consisting of a lifting device 5, a stock conveying device 7, an upper conveying device 8, and a vertical conveying device 9. It has been reported.

As described above, the present invention is capable of changing the speed of the reaping conveyance device of a combine, and the speed change is performed by engaging and disengaging the high-speed and low-speed hydraulic clutch devices, and has a structure that also functions as a reaping clutch device. The operating hydraulic pressure for the hydraulic clutch device is extracted from between the travel hydraulic directional control valve and the hydraulic clutch device in the travel hydraulic clutch type transmission inside the travel transmission case, so the travel device and reaping device can only be linked when moving forward. The reaping and conveying device can be stopped when the vehicle is in neutral when traveling in reverse, and the forward speed and reaping gear can be interlocked to automatically change the reaping speed as the traveling speed changes.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of the combine harvester, Fig. 2 is a side view of the traveling transmission case and the reaping transmission case, and Fig. 3 is a hydraulic circuit diagram of the present invention. 2... Traveling transmission case, 3... Reaping mission case, 10... Traveling transmission lever, 11...
...Reaping speed change lever, 24...Hydraulic clutch device for low speed reaping, 25...Hydraulic clutch device for high speed reaping, 26...Hydraulic directional control valve for reaping, 27...Hydraulic directional control valve for traveling, 28, 29, 30 ,31...
...Hydraulic clutch device for traveling.

Claims (1)

[Scope of utility model registration request] In a combine harvester in which the reaping conveyance device is variable speed, and the speed change is performed by connecting and disconnecting a hydraulic clutch device, which also serves as the reaping clutch device, the operating hydraulic pressure of the hydraulic clutch device for low and high speed reaping is supplied to the traveling transmission case. A reaping clutch device for a combine harvester, characterized in that it is taken out from between a hydraulic directional control valve for traveling and a hydraulic clutch device in a hydraulic clutch type transmission for traveling.