JPH0249050Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention mainly relates to a transmission device for a mobile agricultural machine in which a hydraulic continuously variable transmission device is used in the running section of a conventional combine harvester.

"Prior Art" Japanese Utility Model Application Publication No. 59-64369 discloses a method in which a hydraulic continuously variable transmission (HST) is directly interlocked and connected to an engine via a belt transmission element.

``Problems to be solved by the invention'' In the case of such means, the installation position of the continuously variable transmission is not only limited to the vicinity of the engine, but also when a transmission clutch is interposed between the continuously variable transmission and the engine. However, there is a drawback that not only is there not enough space for installing the transmission clutch, making installation difficult, but also making the structure complicated.

``Means for Solving the Problems'' Therefore, the present invention interlocks and connects the input shaft of a hydraulic continuously variable transmission to the output shaft of the engine via a counter shaft, and also connects the input shaft of the hydraulic continuously variable transmission with the hydraulic pump of the continuously variable transmission. The counter shaft is integrally attached to a single mounting bracket to form a unit.

``Operation'' According to the present invention, the continuously variable transmission can be accurately installed at any position remote from the engine by using the countershaft, and therefore assembly is easy and the heat generated by the engine can be reduced. In addition to avoiding the negative effects of The system can be made compact, and by integrally mounting the hydraulic pump of the continuously variable transmission and the counter shaft on a single mounting bracket, the structure can be made compact and the support strength can be improved.

"Embodiment" An embodiment of the present invention will be described below in detail based on the drawings.

Fig. 1 is an explanatory diagram of the hydraulic pump section, Fig. 2 is a side view of the whole, and Fig. 3 is a plan view of the same. a threshing unit 7 equipped with a flow-type screw-type handling cylinder 5 and a sorting mechanism 6 and mounted on the machine base 1;
Reference numeral 9 indicates a grain tank for storing grains from the threshing section 4 to be taken out via the grain lifting cylinder 8; 9 indicates a reaping section installed at the lower front of the threshing section 4 so as to be movable up and down via a hydraulic cylinder 10; and 11 indicates a driver's seat 12. and a driver's cab which is provided with a driving operation section 13 and is fixedly installed in front of the grain tank 7; 14 is an engine room which is provided at the rear of the grain tank 7 and has an engine 15 installed therein; 16 is an engine room inside the grain tank 7; This is a grain removal auger that takes out the grains.

The reaping section 9 is composed of a grain header 17 that receives uncut grain culms, and a supply chamber 18 that is connected to the rear center of the header 17 and feeds the reaped grain culms to the threshing section 4. , a grain header 17 is provided with an uncut grain culm raking reel 19, a reciprocating drive type cutting blade 20, and a grain culm raking drum 21;
The harvested grain culm taken into the header 17 is sent to the threshing section 4 via a supply chain conveyor 22 installed in a supply chamber 18 for threshing processing.

Further, on the left outer side of the threshing section 4, there is a second reducing cylinder 23.
are arranged in a protruding manner so that the second processed material is returned above the sorting mechanism 6 for re-threshing and re-sorting.

As shown in FIG. 4, the screw-shaped handling cylinder 5
is a body portion 24 having a length approximately equal to the front and back length of the threshing portion 4;
and screw blades 25 which are screw-shaped handling teeth that are wound around the outer periphery of the body 24 and erected in a radial manner.
Stem culm scattering plate 26 provided on the outer periphery of the rear end of the body portion 24
The screw type handling cylinder 5 is pivotally supported in the longitudinal direction of the machine, and the front end of the handling cylinder 5 is connected to the front side input port 28 of the handling chamber 27 which communicates with the supply chamber 18, and The scattering plate 26 is made to face the dust exhaust port 29, and a receiving net 30 is stretched below the handling drum 5, and the whole amount of the harvested grain culm is thrown in through the supply chamber 18 for threshing. .

Further, a swinging sorting board 31 that constitutes the sorting mechanism 6
, supports the sorting board 31 so as to be swingable in the front-rear direction via swing links 32 and 33, and
A feed pan 3 located below the front of the handling cylinder 5
4, a first chaff sieve 35 provided at the rear of the feed pan 34, a first sorting board 36 provided below the chaff sieve 35, a sieve line 37 continuous to the rear side of the chaff sieve 35, and the sieve line 37.
The sorting board 31 is equipped with a second chaff sheave 38 provided below and first and second grain plates 39, 40.

Furthermore, a dust removal fan 41 that supplies sorting air to the upper surface of the feed pan 34 and a first grain board 39 are provided.
the first gutter 43 and the first conveyor 44 that receive the grain from the first grain board 39 and send it to the grain lifting tube 8; a second sorting fan 45 that supplies
A second gutter 46 and a second conveyor 47 that send the second processed material, which is the reduced product from the second flow grain board 40, to the second reduction cylinder 23, and a third port 48 that faces the rear end of the sorting board 31. , a dust suction and exhaust fan 49 provided diagonally above the rear of the second chaf sheave 38, and the first gutter 4
3 to the tank 7, and the reduced product from the second gutter 46 to the feed pan 34.

As shown in the drive system of FIG.
A travel counter shaft 50 is connected to the output shaft 15a of the pulley 5.
1 and 52 and a belt 53, and an input shaft 55a of a variable displacement hydraulic pump 55 of a continuously variable hydraulic transmission (HST) 54 is connected to the counter shaft 50 via pulleys 56, 57, a belt 58, and a belt 53. Traveling clutch 5 which is a tension pulley
Hydraulic motor 61 of continuously variable transmission 54 is interlocked and connected via 9 and input connected to traveling transmission 60.
The rotational speed of the vehicle is appropriately controlled by the amount of hydraulic pressure discharged from the pump 55, and the traveling speed is changed.

In addition, the counter shaft 50 is connected to the threshing first input shaft 62.
are connected to the input shaft 62 via a bevel gear 67, a counter shaft 68, pulleys 69, 70, and a belt 71. The handling cylinder shafts 5a of the cylinders 5 are interlocked and connected.

Further, the counter shaft 50 is connected to the input shaft 73 of the reduction gear case 72, and the pulleys 74, 75 and the belt 7 are connected to the input shaft 73 of the reduction gear case 72.
A pump input shaft 79 of a reaping lifting pump 77 that controls the operation of the hydraulic cylinder 10 and an auger lifting pump 78 that controls the operation of the lifting cylinder of the discharge auger 16 is connected to the input shaft 73 via the input shaft 73. pulleys 80, 81 and belt 8
They are interlocked and connected via 2.

Furthermore, the input shaft 73 is connected to the input drive shaft 85 of the lower discharge auger 83 and the vertical discharge auger 84 provided in the grain tank 7, and of the carry-out auger 16 which is the upper horizontal discharge auger. They are interlocked and connected via an auger clutch 89, which is a shaft pulley.
The conveyor shaft 44a of the first conveyor 44 and the swing drive shaft 91 of the swing sorting board 31 are connected to the output shaft 90 of the gear case 72 through pulleys 92, 9.
3 and 94 and a belt 95, and the fan shaft 42a of the winnowing fan 42 is interlocked and connected to the output shaft 90 via continuously variable speed pulleys 96, 97 and a belt 98.

Further, the grain lifting conveyor shaft 8a of the grain lifting cylinder 8 is interlocked and connected to the first conveyor shaft 44a via a transmission mechanism 99, and the conveyor shaft 47a of the second conveyor 47 is connected to the swing drive shaft 91 using a pulley 10.
The second reduction conveyor shaft 23a of the second reduction cylinder 23 is interlockedly connected to the conveyor shaft 47a through the belt 102 and the belt 102, and through the transmission mechanism 103, respectively.

On the other hand, a reaping input shaft 104 is operatively connected to the output shaft 90 via pulleys 105, 106, a belt 107, and a reaping clutch 108, which is a belt tension pulley. It is linked and linked. Further, a counter shaft 110 is interlocked and connected to the input shaft 104 via sprockets 111, 112 and a chain 113, and a drum shaft 21a of the scraping drum 21 is connected to the sprocket 11.
4, 115 and a chain 116, and the drive input shaft 117 of the cutting blade 20 is connected to pulleys 118, 11.
9 and a belt 120, which are interlocked and connected to the counter shaft 110, respectively.

Furthermore, the reel drive shaft 19a of the scraping reel 19 is connected to the counter shaft 11 via the belt speed change transmission mechanism 121 and the sprocket transmission mechanism 122.
It is linked to 0.

As shown in FIGS. 1 and 6, the traveling counter shaft 50 and the hydraulic pump 55 are connected to the engine compartment 1.
The bearing part 1 on the upper part of the bracket 123 is integrally attached to a single bracket 123 in the
The travel counter shaft 50 is pivotally supported by the travel counter shaft 50, and the hydraulic pump 55 is fixed via bolts 124 to the outer surface of the square frame portion 123c at the bottom of the bracket 123, which has a space 123b in the center. The input pulley 57 of the pump 55 is exposed. In addition, the traveling clutch 59
The tension arm 125 also has the space 123b.
The tension pulley 59, which is a clutch, is brought into pressure contact with the belt 58 by the pressure of a set spring 127, which is normally biased against the arm 125, to operate the hydraulic pump 55. The main clutch pedal 128
Clutch arm 1 connected to via wire 129
30 pins 131 are configured to interfere with the arm 125 and stop driving the hydraulic pump 55 when operated against the pressure of the spring 127 when the pedal 128 is operated.

As shown in FIGS. 7 and 8, an oil cooler 132 for cooling the hydraulic oil supplied to the hydraulic pump 55 is provided in the fan cooling chamber 14a above the engine chamber 14, and a radiator 13 of the engine 15 is provided.
A fan stand 134 having three sides and a fan stand bottom 135 that closes the opening surface of the fan stand 134 form a fan cooling chamber 14a inside.
The oil cooler 132 is installed at the air intake port on the outside of the airframe of the cooling chamber 14a, the radiator 133 is installed behind the oil cooler 132, and the cooling fan 136 is installed behind the radiator 133.
The cooling fan 136 connects the fan shaft 136a to the counter shaft 50 via pulleys 137, 138, a belt 139, and a tension pulley 140.
The upper and lower reinforcing supports 14 are interlocked and connected to the upper and lower reinforcing supports 14 installed between the left and right side plates of the fan stand 134.
A bearing 143 that supports the fan shaft 136 and a tension pulley support member 144 that supports the tension pulley 140 are respectively attached to 1 and 142 to facilitate centering of the belt 139 and to prevent the belt 139 from coming off. The structure is designed to prevent this.

Further, the fan stand 1 of the water replenishment port 133a of the radiator 133 facing upward from the fan stand 134 is
34 opening 145 is provided with a dust-proof rubber plate 146, and the rubber plate 146 has a water replenishment port insertion hole 147 in the center that closely contacts the water refill port 133a, and a cut for inserting the water refill port outward from the insertion hole 147. 148, and the rubber plate 1 on the side of this cut 148
46 ends are fixed to the fan stand 134 via bolts 149, and each opening 145 or insertion hole 14
While preventing dust from entering from 7, water replenishment port 1
33a is exposed above the fan stand 134 to facilitate maintenance and inspection thereof.

Furthermore, an inspection opening 150 is provided on one side of the fan stand 134 between the oil cooler 132 and the radiator 133, and the opening 150 is opened through a wire mesh 15.
provided so as to be covered with an inspection cover 152 having a
It is configured to facilitate internal inspection with the cover 152 attached, and to prevent overheating by expanding the suction area or introducing new cooling air that does not pass through the oil cooler 132 into the radiator 133. There is.

The present embodiment is constructed as described above, and uncut grain culms are introduced into the grain header 17 via the reel 19, and the stock base of the uncut grain culms is cut by the cutting blade 20. Reaped grain culms are fed into the supply chamber 18 from approximately the center of 17 via a grain culm raking drum 21, and the reaped grain culms are fed to the threshing section 4 by a reaped grain culm supply chain conveyor 22. The grains are sequentially threshed by a handling cylinder 5, and the shattered grains are sorted while falling through a sorting mechanism 6, and only the sized grains are taken out into a grain tank 7.

During such work, the rotation of the motor 61 is controlled and the traveling speed is changed by appropriately changing the amount of oil pressure supplied from the hydraulic pump 55 to the hydraulic motor 61 by operating the main shift lever 54a. This is what I did.

In the above-mentioned embodiment, an example of the configuration for a normal type combine harvester was shown, but the present invention is not limited to this.

"Effects of the Invention" As is clear from the above embodiments, the present invention interlocks and connects the input shaft 55a of the hydraulic continuously variable transmission 54 to the output shaft 15a of the engine 15 via the counter shaft 50. Since the hydraulic pump 55 of the transmission 54 and the countershaft 50 are integrally attached to a single mounting bracket 123 to form a unit, the continuously variable transmission 54 and the engine 15 can be connected via the countershaft 50. This not only facilitates the assembly and maintenance inspection of the continuously variable transmission 54, but also makes it possible to install the continuously variable transmission 54 separately from the engine 15.
It is possible to avoid adverse effects from heat generation, etc., and also to ensure sufficient installation space for the clutch that cuts off the driving force to the continuously variable transmission 54, making it easy to assemble the clutch.
It is now possible to obtain the driving force for the handling cylinder 5 etc. from 0, which makes the transmission drive system more compact, and the pump 5 can be mounted on a single mounting bracket 123.
5 and the counter shaft 50 can be integrally mounted, the structure can be made compact and the support strength can be improved, resulting in remarkable effects such as ease of assembly and maintenance.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the hydraulic pump section, Fig. 2 is an overall side view, Fig. 3 is a plan view thereof, Fig. 4 is a cross-sectional explanatory diagram of the threshing section, and Fig. 5 is an explanatory diagram showing the drive system. FIG. 6 is an explanatory diagram of the hydraulic pump mounting bracket section, and FIGS. 7 to 8 are explanatory diagrams of the cooling fan section. 15...Engine, 15a...Output shaft (of the engine), 50...Counter shaft, 54...Continuously variable transmission, 55...Hydraulic pump, 55a...Input shaft (of the hydraulic pump), 123...Bracket .

Claims (1)

[Scope of utility model registration request] The input shaft of the hydraulic continuously variable transmission is interlocked and connected to the output shaft of the engine via a countershaft, and the hydraulic pump of the continuously variable transmission and the countershaft are integrally mounted on a single mounting bracket to form a unit. A transmission device for a mobile agricultural machine, characterized in that it is configured to.