JPH0631425U - Combine engine equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the size of the counter shaft for engine output in combine low-noise engines. [Structure] The engine (21) is arranged in a substantially hermetically sealed engine room (34), and the rotation of the engine output shaft (21a) is rotated through the counter shaft (45) in the engine room (3
4) In the structure of taking out to the outside, a counter case (46) fixed to the outside of the side wall (24a) of the engine room (34) to rotatably support the counter shaft (45) is provided, and the counter is also provided. Install the counter pulley (47) attached to the shaft (45) into the counter case (4
6) It is provided so as to be polymerized on the outer periphery.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an engine device that drives various parts such as a traveling part of a combine and a threshing part.

[0002]

[Prior art]

 In the existing combine, the engine radiator is installed on the left and right sides of the engine, which is located outside the fuselage, at a position close to the engine and with a radial fan for cooling the radiator.

[0003]

[Problems to be solved by the device]

 However, in the case of such an engine structure, since the cooling air opening of the radiator cannot be closed, the opening ratio of the engine room is also high, and the engine and fan drive noises are noisy and low noise type. There was a drawback that it was not suitable for the current situation where combine harvesters are desired. Therefore, there is a means to reduce noise by separating the radiator from the engine and installing only the engine in a substantially hermetic engine room, but the power of the engine output shaft is taken to the counter shaft outside the engine room. If the counter bearing that supports the counter shaft is usually fixed to the machine base side and the counter pulley attached to the counter shaft is installed between the engine room and the counter bearing, the problem that the pulley cannot be easily removed In addition, when the counter pulley is arranged outside the counter bearing, there is a disadvantage that the protrusion amount to the outside of the engine room becomes large.

[0004]

[Means for Solving the Problems]

 Therefore, according to the present invention, in a structure in which the engine is arranged in a substantially hermetically sealed engine room and the rotation of the engine output shaft is taken out to the outside of the engine room via the counter shaft, the engine is fixed to the outside of the side wall of the engine room. The counter case that rotatably supports the counter shaft is provided, and the counter pulley attached to the counter shaft is provided so as to overlap with the outer circumference of the counter case, so that the protrusion amount to the outside of the engine room is minimized. In this condition, the pulley is attached to the counter shaft to make it compact, and the counter pulley can be easily removed, making it easy to replace the transmission belt and greatly seal the engine room. With this low noise structure, this combine enables good power extraction.

[0005]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory plan view of a counter shaft portion, FIG. 2 is an overall side view of the combine, and FIG. 3 is a plan view thereof. In the figure, (1) is a track frame on which a traveling crawler (2) is mounted, (3) Is a machine frame installed on the track frame (1), and (4) is a working device which is a work device in which a feed chain (5) is stretched on the left side and which has a handling cylinder (6) and a processing cylinder (7). Section, (8) is a mowing section including a cutting blade (9) and a grain culm transport mechanism (10), (11) is a hydraulic cylinder for moving the mowing section (8) up and down via a main frame (12), (13) ) Is a straw processing unit that faces the end of the straw chain (14), (15) is a grain tank that carries the grain from the threshing unit (4) through the fried barrel (16), and (17) is the above A discharge auger for discharging the grains in the tank (15) to the outside of the machine, and (18) is a driving operation unit (19) and Driving unit comprising a Utateseki (20), (21) is an engine provided in the driver's seat (20) downward, and configured to threshing harvests continuous manner culms.

As shown in FIG. 4 to FIG. 7, the engine (21) is separated from the engine radiator (22) that cools the combustion chamber of the engine (21). The engine (21) is arranged in a substantially closed box-shaped seat column (24) which is arranged below the driving operation column (23) of the driving operation section (19) and supports the driver seat (20) on the upper surface. A sirocco fan (26) for radiating and cooling the radiator (22) is provided below the step (25) between the seat column (24) and the operation column (23) to blow air to the radiator (22). ) Is arranged to reduce the noise of the engine (21) and the radiator cooling fan.

A right side collum (27) having a hollow interior is disposed on the right side of the seat column (24), and an outside air suction port (28) formed on the right outer wall of the column (27). ) From the lower front end of the left inner wall of the column (27) to the right inlet (31a) of the sirocco fan (26) on the right outer side of the fan casing (30). The radiator (22) is sent to the fan (26) through the air to blow air to the radiator (22) on the front side to radiatively cool the radiator (22). The inside of the column (27) is connected to the sirocco fan ( It is formed in the air suction air passage (32) of (26).

Further, a left suction port (31b) similar to the right side is opened on the left outer surface of the fan casing (30), and the left outer surface of the fan casing (30) is fixed so as to cover the suction port (31b). The engine room that covers the intake port (33a) of the air passage guide (33) installed inside the seat collum (24) in a substantially hermetically sealed manner over the entire engine enclosure room (34) (engine (21)) will be described below. Air) in the engine enclosure room (34) is sucked from the left side of the sirocco fan (26) through a ventilation circuit (35) formed in the air passage guide (33). The sirocco fan (26) is configured to prevent dust from being generated in the mowing section (8) to the left of the sirocco fan (26) and prevent clogging of the dust-proof net such as the radiator (22).

Furthermore, an air passage casing (36) for guiding the cooling air from the sirocco fan (26) to the radiator (22) is provided between the fan casing (30) and the radiator (22) in one body. , The radiator (22) and the casings (30) and (36) are integrally supported by the vibration damping rubber (37) at the lower portion of the step (25) to support the vibration at the step (25). It is configured to prevent the transmission of these vibrations.

Further, a hydraulic continuously variable transmission (HST) (38) for shifting the traveling speed is integrally mounted on the upper part of the mission case (39), and an oil cooler (40) of the transmission mechanism (38). Is disposed in front of the radiator (22), and the fan casing (30) and the oil cooler (40) are displaced relative to the radiator (22) with their right ends in plan view aligned and displaced. (30) The air passage guide (33) and the like are arranged in the surplus space on the left side.

Further, the left and right ventilation intakes (41) (42) for taking in the outside air into the enclosed room (34) are sandwiched by the engine (21) of the intake (33a) in plan view. The left intake port (41) is provided at a substantially diagonal position, the left intake port (41) is provided at the upper rear position of the left side wall (24a) of the seat column (24) forming the room (34), and the right intake port (42) is provided. (24) Open at the lower rear position of the right side wall (24b) respectively, and take in the outside air taken in from the left intake port (41) and the outside air taken in from the right intake port (42). The whole of the (21) is circulated evenly to promote the decrease of the engine (21) and its ambient temperature.

The fan shaft (26a) of the sirocco fan (26) and the crank output shaft (21a) via the flywheel (43) of the engine (21) are arranged substantially parallel to each other in the left-right lateral direction to output the output. The fan shaft (26a) is interlockingly connected to the counter shaft (45) that is connected to the shaft (21a) through the universal joint shaft (44), and is fixed to the left side wall (24a) of the seat column (24). The counter shaft (45) is supported by a counter case (46), and the input pulley (48) of the speed change mechanism (38) is connected to the belt (49) by a counter pulley (47) integrally connected to the counter shaft (45). The transmission shaft (53) parallel to the fan shaft (26a) is connected to the input pulley (50) of the sirocco fan (26) via the belt (51) and the pulley (52). The counter pulley (47) is linked to the transmission shaft (53) through the pulley (54) and the belt (55) to rotate the counter shaft (45) outside the seat column (24). By transmitting the belt, it is possible to select an appropriate vibration-proof rubber for mounting the engine (21) that is not affected by the belt tension, and at the same time, the joint shaft opened on the left outer wall of the seat column (24). The opening ratio of the insertion hole (56) of (44) is suppressed to a small level to improve the airtightness of the enclosed room (34), and low noise is promoted by the synergistic effect of using belt transmission without using gears or the like. It is configured to do.

Further, the lower discharge conveyor (58) conveys the grains in the grain tank (15) to the rear part and transfers them to the vertical feed auger (57) and discharge auger (17) to discharge the grains to the outside. The counter shaft (45) is continuously connected to the shaft (58a) through a tension belt (59), a bevel gear (60) and a clutch belt (61). The bevel is fixed to the machine base (3) side. The case (62) supports the input shaft (63a) and the output shaft (63b) of the bevel gear (60), and the counter pulley (47) is provided with a clutch belt (61) and a tank clutch (62) which is a tension pulley. The bevel input pulley (64) fixed to the input shaft (63a) is interlockingly connected, and the bevel output pulley (65) fixed to the output shaft (63b) is constantly stretched. The lower discharge conveyor (58) is driven by being interlocked with a conveyor input pulley (66) fixed to the conveyor shaft (58a) via a belt (59).

By disposing the tank clutch (62) between the counter shaft (45) and the bevel input shaft (63a), the bevel gear (60) is not always rotated and the generation ratio of gear noise is reduced. Noise is promoted, and the tension arm (62a) for operating the tank clutch (62) and the arm pulling rod are not provided between the enclosure room (34) and the grain tank (15). ) By arranging it between (63a), it is not necessary to secure a space for vertically moving the arm (62a) between the enclosure room (34) and the grain tank (15), and the tank capacity is increased. It is configured as follows.

By the way, the plate thickness (t ₁ ) of the left side wall (24a) of the seat column (24) is larger than the plate thickness (t ₂ ) of the other side walls (24b) (24c) (t ₁ > t ₂ ). To improve the supporting strength of the counter case (46) fixed to the side wall (24a) through a bolt (67), and to support the counter case (46) on the inner circumference thereof via a bearing (68). The boss (47a) of the counter pulley (47) is fixedly mounted on the protruding shaft portion of the counter shaft (45) outside the case (46), and the right end side of the pulley (47) is superposed on the outer periphery of the case (46). And the bearing (69) is interposed between the outer circumference of the case (46) and the inner circumferential surface of the pulley (47) to simplify the pulley (47) mounting structure and to the outside of the side wall (24a). Pull out the pulley (47) This allows the pulley (47) to be mounted compactly and compactly by suppressing the clearance (A) to the minimum, and at the same time, it is possible to easily attach / detach only the pulley (47) without removing the counter case (46). Therefore, the maintenance and inspection work such as replacement of the belts (49) (55) (61) is made convenient.

The present embodiment is configured as described above, and by disposing the radiator (22) requiring a large cooling air opening away from the engine (21) disposition position, the engine (21 It is possible to make the engine enclosure room (34) for storing the above () a maximum of airtightness to reduce the engine noise, and to cool the radiator (22) by blowing air. By using a sirocco fan (26) for the cooling fan, it is possible to further reduce the noise due to static operation compared to the conventional radial type fan, and moreover, when the radiator (22) is cooled by the sirocco fan (26). Improves the engine (21) performance by simultaneously performing good ventilation in the enclosure room (34) by the air passage guide (33). The period can be maintained stable.

In the case of this structure, therefore, the counter case (46) supporting the counter shaft (45) is not fixed to the machine base (3) but is attached to the left side wall (24a) of the seat column (24). By fixing the counter pulley (47) to the left side wall (24a) of the left side wall (24a), the travel cost (A) is minimized, and only the pulley (47) can be attached and detached. The counter pulley (47) to be mounted on the mounting chamber 45) can have a simple mounting structure and can also be easily mounted and removed, thereby increasing the degree of sealing of the enclosed room (34). It is possible to improve maintenance such as maintenance and inspection of the output belts (49) (55) (61) in the engine part having the low noise structure.

[0018]

[Effect of device]

 As is apparent from the above-described embodiments, the present invention provides the engine (21) in a substantially hermetically sealed engine room (34), and the rotation of the engine output shaft (21a) is transmitted through the counter shaft (45) to the engine. In the structure which is taken out to the outside of the room (34), a counter case (46) fixed to the outside of the side wall (24a) of the engine room (34) and rotatably supporting the counter shaft (45) is provided. Since the counter pulley (47) attached to the counter shaft (45) is superposed on the outer circumference of the counter case (46), the protrusion amount (A) to the outside of the engine room (34) is minimized. A pulley (47) can be attached to the counter shaft (45) to make the configuration compact, and it is possible to easily remove only the counter pulley (47). The transmission belts (49), (55) and (61) can be replaced conveniently, and the engine room (34) can be sealed tightly to achieve a low noise structure. It has remarkable effects such as good power output.

[Brief description of drawings]

FIG. 1 is an explanatory plan view of a counter shaft portion.

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

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

FIG. 4 is a perspective explanatory view of an engine unit.

FIG. 5 is a side view of the engine section.

FIG. 6 is an explanatory plan view showing a driving state of an engine unit.

FIG. 7 is an explanatory plan view of an engine section.

[Explanation of symbols]

 (21) Engine (21a) Output shaft (24a) Side wall (34) Enclosed room (engine room) (45) Counter shaft (46) Counter case (47) Counter pulley

Claims (1)

[Scope of utility model registration request] 1. A structure in which an engine is arranged in a substantially hermetically sealed engine room and the rotation of an engine output shaft is taken out to the outside of the engine room via a counter shaft, and is fixed to the outside of a side wall of the engine room. A combine engine device comprising a counter case that rotatably supports the counter shaft, and a counter pulley attached to the counter shaft so as to overlap the outer circumference of the counter case.