JPH04293416A - Combine - Google Patents

Abstract

PURPOSE:To reduce the fluctuation of the gravity center of the frame of a combine in the longitudinal and transverse direction, caused by the fluctuation of the weight of grains in a grain tank. CONSTITUTION:An engine 7 and a radiator cooling device 8 are disposed in parallel in the longitudinal direction behind a cab 5, and a grain tank 11 is erected over a thresher 4, the engine 7 and the radiator cooling device 8.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester for cutting and harvesting, and more particularly to the overall layout of a combine harvester equipped with a grain tank.

0002

[Prior Art] Conventionally, a threshing device is mounted on one side of a machine having a traveling device, a pilot's seat is provided on the other side, and a pre-processing device is arranged in front of them. A combine harvester with a tank and a two-story engine and radiator cooling system behind it was developed in Japanese Patent Application Laid-open No.
This is already known from Japanese Patent No. 285114. Further, a combine harvester in which an upper chamber of a grain tank is installed above the threshing device is already known from Japanese Utility Model Publication No. 55-23329.

0003

[Problems to be Solved by the Invention] Among the known combine harvesters, the former has an engine installed at the rear of the machine, so
When power is transmitted from the engine to the traveling transmission, pre-processing device, etc. provided in the front, the transmission distance becomes long, and the intermediate transmission device cannot be configured compactly and inexpensively. Additionally, since the grain tank that stores the grain is installed between the front cockpit and the rear engine, increasing the front-to-back length of the tank would lengthen the aircraft, making it impossible to obtain a compact aircraft. Therefore, there is a problem in that the tank capacity cannot be increased because the front and back length of the tank is restricted.

[0004]Therefore, a combine harvester is known in which the engine is installed at the rear of the cockpit relatively close to the driving transmission, etc., and a grain tank is installed at the rear of the engine to make the intermediate transmission device compact. In this case, since the grain tank is located at the rear of the aircraft, there are problems such as fluctuations in the grain weight in the tank, which causes large fluctuations in the longitudinal center of gravity of the aircraft, which adversely affects running performance. In addition, in order to make the fuselage more compact, all of the above-mentioned combine harvesters have the radiator cooling system installed in a two-story structure above the engine. There are maintenance problems such as difficulty in cleaning the cooling water or replacing the cooling water.

Furthermore, in the latter case, the upper chamber of the grain tank is constructed above the threshing device, so compared to the former case in which the grain tank is placed only on one side of the machine body, the grain tank can be moved from side to side due to fluctuations in grain weight. There is little variation in the center of gravity, and it is possible to avoid problems such as the crawler traveling device on the tank side sinking abnormally due to the weight of grains, making steering difficult. Furthermore, although it is possible to increase the capacity of the grain tank by using the upper chamber, since the grain tank is still installed at the rear of the engine, as mentioned above, fluctuations in the grain weight in the tank can cause the front and back of the aircraft to change. The center of gravity changes greatly,
There are problems that adversely affect driving performance.

[0006]

[Means for Solving the Problems] The present invention aims to solve the above-mentioned problems, and has a threshing device mounted on one side of a machine base having a traveling device, and a pilot's seat on the other side. In addition, a pretreatment device is installed in front of these devices, and an engine and radiator cooling device are installed in the rear of the cockpit in the longitudinal direction, and a grain tank is installed above the engine and radiator cooling device. It is characterized by being constructed as follows. Furthermore, a threshing device is mounted on one side of the machine base having a traveling device, a cockpit is mounted on the other side, a pre-processing device is provided in front of these, and an engine and a radiator cooling device are installed at the rear of the cockpit. Arranged side by side in the front and rear direction,
Furthermore, the grain tank is constructed above the threshing device, the engine, and the radiator cooling device.

[0007]

[Operation] According to the present invention, the grain culm harvested and transported by the pretreatment device is supplied to the threshing device, and the threshed grain is stored in the grain tank by the grain lifting spiral tube. At this time, since the grain tank is installed above the engine and radiator cooling system installed in the front and rear directions, a large amount of grain is stored over the entire length from the rear of the cockpit to at least above the engine and radiator cooling system. can be stored in. Moreover, even if grains flow into the grain tank and the tank weight increases, the grains can be stored in a dispersed manner in the longitudinal direction of the aircraft, so the longitudinal center of gravity of the aircraft does not change significantly, and therefore, it is easier to move. It is possible to perform reaping and harvesting work while always maintaining good performance. Also, when the radiator cooling system filter becomes clogged with dust and the engine overheats, or when the radiator cooling water is drained in the winter,
When working, open the side cover covering the radiator cooling device and clean the filter or replace the cooling water. In this case, since the radiator cooling device is provided at a low position in the aircraft body, maintenance and maintenance thereof can be easily performed from the side of the aircraft body.

Furthermore, in the case where the grain tank is installed above the threshing equipment, the engine, and the radiator cooling system, the grains are stored in the storage chambers on the threshing equipment side and the engine side, extending left, right, front, and back. Can store a large amount. Also, even if grains flow into the grain tank and the tank weight increases,
Since the grains are stored in a dispersed manner on the left and right, the center of gravity of the machine does not fluctuate significantly, making it possible to work continuously for long periods of time while maximizing running performance.

[0009]

[Embodiment] An embodiment of the present invention will be described based on the drawings. As shown in FIGS. 1 and 2, a combine harvester 1 has a threshing device 4 on the left side of a body frame 3 having left and right crawler running devices 2, 2. A cabin 6 with a cockpit 5, an engine 7, and a radiator cooling system 8 are arranged in order from the front on the right side of the threshing device 4, and in front of the threshing device 4, there is a grass cover 9a that spans almost the entire width of the machine. , a pulling device 9b, a reaping device 9c, and a grain culm conveying device 9d for conveying the reaped grain culm to the threshing device 4, etc., are installed so as to be vertically movable. In addition, a desk-shaped cutter 10 is provided at the rear of the threshing device 4.
A grain tank 11 is installed over the above-mentioned threshing device 4, engine 7, and radiator cooling device 8 using appropriate supports. Note that 12 is a discharge auger, and 13 is a fuel tank.

[0010] Here, the power transmission system to the pre-processing system, threshing system, and traveling system will be explained below. As shown in FIGS. A counter case 14 constituting an intermediate transmission device for the engine 7 is fixedly installed. The counter case 14
The input shaft 15 is connected to the output pulley 7a of the engine 7 via a transmission shaft 17 having universal joints 16, 16 on both sides and a rubber coupling 18. Furthermore,
The counter case 14 is a pump 1 of a hydraulic continuously variable transmission device.
9 and a working hydraulic pump 20 are detachably fixed, and the power transmitted to the input shaft 15 is transferred from a gear 21 fixed to the input shaft 15 to a gear 23 fixed to the outer diameter of the hollow shaft 22.
The hollow shaft 22 has a spline section provided on its inner diameter that connects to the pump input shaft 19a of the hydraulic continuously variable transmission and the input shaft 20 of the working hydraulic pump 20.
a are fitted together to drive each. The hollow shaft 2
The gear 24 on the other side that is fixed on the gear 2 meshes with the gear 26 that is fixed on the transmission shaft 25, and the transmission shaft 25 extends toward the engine 7, and the threshing drive pulley 2 is attached to the end of the transmission shaft 25.
7 is fixed. Further, the transmission shaft 25 is covered by a holding cylinder 28, and one end of the holding cylinder 28 is fixed to the counter case 14, and the other end is fixed to the body frame 3. Furthermore, the threshing drive pulley 27 drives a pulley 29 located above with a belt 30. The transmission shaft 31 of the pulley 29 drives a bevel gear provided in a gear box (not shown) of the threshing device 4, and finally rotationally drives the handling barrel shaft.

A hydraulic oil tank 32 is installed in front of the threshing device 4, and the hydraulic oil in this tank is supplied to a charge pump integrated with the pump 19 of the hydraulic continuously variable transmission. Although a detailed explanation of the hydraulic continuously variable transmission itself will be omitted, the control arm 33 that changes the angle of the swash plate of the pump 19 by a hydraulic servo mechanism is linked to a traveling speed change lever 6a provided inside the cabin 6. Cage, arm 33
By operating the pump from the neutral position N to the forward side F or the reverse side R, the direction and amount of pressure oil discharged from the high pressure hoses 34 and 35 connected to the pump 19 are changed. Further, a traveling transmission case 36 supported by the fuselage frame 3 is provided at the front lower part of the fuselage approximately in the center.
A motor 37 of a hydraulic continuously variable transmission is fixed to the upper left side of the transmission case 36 to which the other ends of the high pressure hoses 34 and 35 are connected. Motor 37 is pump 1
The power is stopped or rotated in forward and reverse directions by receiving pressure oil from the transmission case 36, and the speed is appropriately changed by the gear-type sub-transmission device installed inside the transmission case 36.The power is transmitted through the center gear and side wheels installed on the steering shaft, as in the conventional device. It is transmitted to the clutch gear and the left and right traveling axles 38, 38, and drives the crawler traveling devices 2, 2 by sprockets 39, 39 provided on the axles. Note that the hydraulic oil used to lubricate and cool the pump 19 and motor 37 by the charge pump is transferred to the oil cooler 4 provided at the front of the radiator cooling device 8 via a hose (not shown).
It is returned to the hydraulic oil tank 32 via 0 and 40. Further, a pre-processing transmission pulley 41 is provided behind the above-mentioned motor 37 on the upper left side of the transmission case 36, and power is transmitted from the pulley 41 to the input pulley 43 of the pre-processing section 9 via a belt 42. be done.

Next, the structure of the cabin containing the pilot's seat will be explained. As shown in FIGS. 1 to 3 and 5, the cabin 6 has the pilot's seat 5, the travel gear lever 6a, etc. attached integrally. It has a monocoque structure. A piston 44a of a hydraulic actuator 44 is fixed to a frame 6b integrally attached to the back of the cabin 6, as well as front and rear rollers 45 and left and right rollers 46.
... is pivoted so that its position can be adjusted freely. Further, the front and rear rollers 45 are fitted into the rear masts 47, 47 that stand up from the fuselage frame 3, and the left and right rollers 46 are pressed against the sides of the masts 47, 47, so that the fuselage frame 3 When the hydraulic actuator 44 to which one end of the cylinder 44b is fixed is operated, the cabin 6 moves to the roller 45,
46 and mast 47 as guides to move up and down. When the cabin 6 is raised by switching an electromagnetic switching valve (not shown) using a lift lever 6c provided in the control section, the operator can see the entire pre-processing section 9 during reaping work, making it easier to perform row alignment, etc. be able to. Furthermore, when traveling on the road, storing in a garage, or loading onto a truck, the overall height of the combine 1 can be kept low by lowering the cabin 6 to the top surface of the grain tank 11. Further, when the cabin 6 is moved from the lowered position to the raised position, the bottom surface of the cabin 6 moves from A to B, so that the front surface of the engine 7 installed at the rear is opened. In this case, the fuel system such as the fuel injection pump 7b is arranged on the front side of the engine 7, which is the cabin 6 side, and the intake/exhaust system is arranged on the rear side. Maintenance of the fuel system, which accounts for most of the maintenance, can be carried out extremely easily from the open space created by raising the cabin 6. Furthermore, 6d is a front glass, 6e is a back glass, 6f and 6g are side glasses provided on the door 6h, and 6i is an auxiliary step.

[0013] A counter case 49 is fixed on the fuselage frame 3 below the cabin 6, together with a switching valve unit 48 of hydraulically operated equipment, for transmitting power to the lateral feed spiral shaft 12a of the discharge auger 12. The power taken out from the output pulley 7c on the other side of the engine 7 is transmitted to the input pulley 49a of the counter case 49 via the belt 50, the direction is changed by a bevel gear installed inside the counter case 49, and the power is transferred from the output pulley 49b to the output pulley 49b. It is transmitted via the belt 51 to the input pulley 12b of the traverse feed spiral shaft 12a. Further, the horizontal feed spiral shaft 12a is connected to the masts 47, 47.
It is pivotally supported via a metal 52 to a frame 47a that connects the middle of the two.

Further, to explain the engine and radiator cooling system, as shown in FIGS. 1, 5 and 6, the engine 7 and the radiator cooling system 8 are arranged side by side in the front and back direction of the fuselage frame 3. Yes, engine 7
The fuel system, such as the fuel injection pump 7b described above, is arranged on the front side, and the intake/exhaust system is arranged on the rear side, and the exhaust pipes 7d, 7d, etc. are collected and connected to the body of the radiator cooling device 8. It is connected to a muffler 53 provided inside. The radiator cooling device 8 includes a suction fan 8c surrounded by a fan shroud 8b on the inside of the radiator body 8a, and the suction fan 8c has a bracket 55 extending from a cover 54 that covers a muffler 53 fixed to the fuselage frame 3.
The drive shaft 8d is supported by. A drive pulley 8e is fixed to the end of the drive shaft 8d, and the drive pulley 8e is fixed to the end of the drive shaft 8d.
is transmitted from the output pulley 7a via the belt 56. In addition, there is an air duct 8 on the outside of the radiator body 8a.
The engine 7 and the oil coolers 57, 40, 40 of the hydraulic continuously variable transmission are installed in the air duct 8f.
and a condenser 58 for the cooler installed inside the cabin 6
are provided respectively, and a dust filter 59 is provided on the outside thereof. In addition, side covers are provided on the outside of the engine 7 and the radiator cooling system 8 so that they can be opened and removed as shown in FIG. The cover 60b, which rotates and faces the radiator cooling device 8, is configured to be detachable by pin engagement. In particular, the cover 60b has a wire mesh 61 removably attached to the portion facing the dust filter 59 described above. Furthermore, a cover 62a covering the sides of the grain tank 11, which will be described later.
, 62b, and 62c, the cover 62b provided above the radiator cooling device 8 is configured in a sealed manner with only the bottom portion open, and the outside air is introduced into the passage provided below through the introduction hole 63 formed on the side surface of the cover 62b. It flows into the cover 60b via the radiator body 8a, the oil cooler 40, and further passes through the wire mesh 61 and the dust filter 59 described above.
57 and the condenser 58. Note that 8g is the radiator's reserve tank, and 8h is the cap for the radiator's cooling water inlet.

The structure of the grain tank section will be explained below. As shown in FIGS. 1, 2, and 6, the grain tank 11 is configured as an inverted L-shaped grain storage chamber.
The front end of the storage chamber 11a on the left side seen above the threshing device 4 is located above the supply port 4a of the threshing device 4, and the rear end extends to the rear surface of the cutter 10. Similarly, the front end of the storage chamber 11b on the right side extends from the rear of the mast 47 provided at the back of the cabin 6, passing above the engine 7 and the radiator cooling device 8, to an extension line of the cutter 10 behind it. In addition, as shown in FIG. 1, the lower surface X of the storage chamber 11a is formed with a step and an inclined surface, so that the grains are more easily absorbed by the crawler traveling device 2.
It is constructed so that the center of gravity of the aircraft does not change. The storage chamber 11b is approximately box-shaped, and a horizontal feed spiral shaft 12a integrally formed with a discharge spiral 12c in the front and back direction is provided at the bottom of the storage chamber 11b.
In order to rotate around this horizontal feed spiral shaft 12a, it is rotatably supported by metal between a mast 47 section provided at the front and a support frame 3a section erected from the rear fuselage frame 3. . Further, a piston 64a of the hydraulic actuator 64 is fixed to the bottom surface of the tank 11, and its expansion and contraction operations rotate the tank 11 into a grain storage position shown by a solid line in FIG. 6 and a grain discharge position shown by a two-dot chain line in FIG. Note that the rear end of the transverse feed spiral shaft 12a is connected to a discharge auger 12 which is folded in half at the upper side. Furthermore, Glentank 11
An extension helical tube 66 is installed inside, which connects with the grain lifting helical tube 65 of the threshing device 4 in the storage position, and a blade 67 provided at the upper end of the helical tube 66 moves the grains into the storage chamber 11a of the grain tank 11. , 11b.

In the above configuration, in order to perform reaping and harvesting work with the combine harvester 1, the engine 7 is started, and the pre-processing section 9 and the threshing device 4 are driven by turning on the reaping clutch lever and the threshing clutch lever (not shown). Next, when traveling is started, the grain culms that have been harvested and transported by the preprocessing device 9 and supplied to the threshing device 4 are threshed while being conveyed rearward with the stock base section held between the feed chain and the pinching rail. The waste straw is conveyed diagonally backward by the waste straw conveying device and shredded by the cutter 10. In addition, the grains that have been threshed and wind-selected are transferred to the side by the transfer spiral in the first receiving trough, and when they are lifted by the grain lifting spiral tube 65, an extension provided in the grain tank 11 is used. spiral tube 66
takes over and transports the grains, which are thrown in all directions by the blades 67 and deposited in storage chambers 11a and 11b in the grain tank 11. When discharging accumulated grains and loading them onto a transport vehicle parked on the road, the machine is placed next to the transport vehicle, and the discharge auger 12 is raised and horizontally rotated so that its discharge port faces onto the loading platform. The cross-feeding spiral shaft 12a at the bottom of the grain tank 11 and the spiral shaft of the discharge auger 12 are driven from a counter case 49 provided in the front, and the grain tank 11
The grain inside is lifted and loaded onto a loading platform. When the number of grains in the grain tank 11 decreases, the hydraulic actuator 64
When the grain tank 11 is operated to extend, the grain tank 11 is tilted upward around the horizontal feed spiral shaft 12a, and the grains in the tank flow toward the horizontal feed spiral shaft 12a, and all the grains in the tank are lifted and discharged. Ru.

At this time, the grain tank 11 is a box-shaped structure that extends from the rear of the cockpit 5 to the upper portion of the area that houses the engine 7 and radiator cooling device 8 installed in the longitudinal direction, and the grain frying spiral tube 65. Since the storage chamber 11a is constructed, not only can a large amount of grain be stored, but even if grains flow into the grain tank 11 and the tank weight increases, the grains will not be stored before or after the storage chamber 11a. The front and back centers of gravity of the aircraft do not fluctuate significantly, allowing stable travel without causing head-up, hip-up, etc.

[0018] Also, there is a grain tank 1 visible above the threshing device 4.
The storage chamber 11b of No. 1 has its front end located above the supply port 4a of the threshing device 4, and its rear end extending to the rear surface of the cutter 10, so it can store a larger amount of grains and significantly expand its capacity. In addition, the grains can be stored in the left and right storage chambers 11a and 1.
1b, so the left and right center of gravity position of the aircraft does not fluctuate greatly, and one crawler traveling device 2
Stable running is possible without problems such as abnormal settling due to the weight of grains, which makes steering difficult.

Furthermore, when the filter of the radiator cooling device 8 becomes clogged with dust and the engine 7 overheats, or when the cooling water in the radiator 8 is replaced, the side surface covering the radiator cooling device 8 provided on the side of the aircraft Open the cover 60b and remove the filter 59 and wire mesh 6.
Clean step 1 or remove the cap 8h and inject cooling water. In this case, since the radiator cooling device 8 is provided at a low position in the aircraft body, maintenance thereof can be easily performed from the side of the aircraft body. Moreover, the engine 7 has a side cover 60a.
In addition to being able to perform maintenance with the cabin 6 open, maintenance can also be easily performed, particularly on the fuel system, from the front with the cabin 6 raised.

[0020]

Effects of the Invention As described above, the present invention has a threshing device 4 mounted on one side of the machine base 3 having the traveling device 2, a cockpit 5 on the other side, and a pre-processing device 9 in front of them. At the same time, an engine 7 and a radiator cooling device 8 are arranged side by side in the front and rear direction at the rear of the cockpit 5, and a grain tank 11 is installed over at least the engine 7 and the radiator cooling device 8. Therefore, the engine 7 can be placed in the front of the aircraft, relatively close to the traveling mission case 36, etc., and the power transmission to these devices can be configured compactly and inexpensively. In the storage chamber 11a of the grain tank 11 that extends from near the rear to above the engine 7 and radiator cooling device 8,
It can store a large amount of grain. Moreover, even if grains flow into the grain tank 11 and the weight of the tank increases, the longitudinal center of gravity position of the machine body does not change significantly, and therefore, it is possible to perform reaping and harvesting work while always maintaining good running performance. Can be done. In addition, when the filter 59 of the radiator cooling device 8 becomes clogged with dust and the engine 7 overheats, or when replacing the cooling water of the radiator 8, the side cover 60b that covers the radiator cooling device 8 provided on the side of the aircraft body is removed. Since the filter 59 can be opened and the filter 59 cleaned or the cooling water replaced from a low position in the aircraft body, these maintenance tasks can be performed extremely easily.

Furthermore, if the grain tank 11 is installed above the threshing device 4, the engine 7, and the radiator cooling device 8, in addition to the above effects, grains can also be stored in the storage chamber 11b of the grain tank 11. Therefore, the capacity of the grain tank 11 can be further increased and continuous reaping work can be performed efficiently, and the grains can be stored in the storage chambers 11a and 11.
Since it can be stored in separate locations, there is little variation in the left and right center of gravity of the aircraft, and this combined with the fact that there is little variation in the front and rear center of gravity positions allows continuous work to be carried out while maximizing driving performance.

[Brief explanation of drawings]

FIG. 1 is a right side view of a combine harvester.

FIG. 2 is a front view of the combine harvester.

FIG. 3 is a front view showing main parts of the traveling transmission device and the like.

FIG. 4 is a plan cross-sectional view showing the counter case and the motor portion of the hydraulic continuously variable transmission device.

FIG. 5 is a plan view showing an engine and a radiator cooling device.

FIG. 6 is a CC cross-sectional view showing a threshing section and a grain tank section.

[Explanation of symbols]

2 Crawler traveling device 3 Airframe frame 4 Threshing device 5 Cockpit 7 Engine 8 Radiator cooling system 9 Pre-treatment device 11 Glentank

Claims (2)

[Claims] Claim 1: A threshing device is mounted on one side of a machine base having a traveling device, a cockpit is mounted on the other side, and a preprocessing device is provided in front of the cockpit, and an engine and a radiator are mounted on the rear of the cockpit. Cooling devices are installed side by side in the front and rear directions,
Furthermore, a combine harvester in which a grain tank is installed over at least the engine and the radiator cooling device. 2. A threshing device is mounted on one side of the machine base having a traveling device, a cockpit is mounted on the other side, and a preprocessing device is provided in front of the cockpit, and an engine and a radiator are mounted on the rear of the cockpit. Cooling devices are installed side by side in the front and rear directions,
A combine harvester with a grain tank installed above the threshing equipment, engine, and radiator cooling system.