JP3418894B2 - Mobile farm equipment dust removal equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to suction of dust adhering to a dust-proof rotary screen at a cooling air intake of an engine used for a mobile agricultural machine such as a combine from an intake duct. The present invention relates to a dust remover for a mobile agricultural machine, which is suction-removed by wind power to stably maintain dustproof performance of a screen. 2. Description of the Related Art A rubber lip seal is fixed to a peripheral edge of a rotary screen, and a lip portion of the seal is slid on an inner surface of a protective cover covering the periphery of the screen, so that a gap between the screen and the cover can be removed. There are means to prevent dust from entering. [0003] However, due to poor followability of the lip seal with respect to the protective cover, not only a gap is formed and dust enters, but also the sliding resistance between the cover and the seal is large, resulting in a rotary screen. In such a case, the load on the motor for driving the motor is increased, so that the life of the motor is shortened or the capacity is required to be increased. [0004] Means for Solving the Problems] However, the present invention provides a dust adhering to the surface of the rotary screen, thereby removing sucking the intake duct with a suction <br/> write power of the suction fan, wherein moving agricultural sealing the gap between the protective cover and the rotor <br/> Li screen covering the periphery of the rotary screen with a sealing brush
Suction fan of the radiator cooling chamber
To prevent the suction force from reaching the intake port of the intake duct
So that it faces the air intake with the rotary screen in between.
Provide a shielding plate and rotate the rotary screen.
Widening the entrance gap of the intake port on the entrance side with respect to the direction,
The outlet side with respect to the rotation direction of the rotary screen
It intended to narrow the outlet clearance of the inlet, thereby preventing the ingress of dust, reducing the driving load of b over Tali screen
Is shall then. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an explanatory diagram of a seal portion of a rotary screen,
FIG. 2 is an overall side view of the combine, and FIG. 3 is a plan view thereof. In the figure, (1) is a machine frame equipped with a traveling crawler (2) on a track frame (3), and (4) is an axial screw type screw. A threshing unit equipped with a shaping drum (5) and a swing sorting unit and mounted on the machine base (1), and (6) a grain of a threshing unit (4) taken out through a fryer (7) A grain tank,
(8) is a mowing part which is installed in a lower front of the threshing part (4) via a hydraulic cylinder (9) so as to be able to move up and down, and (10) is provided with a driver's seat (11) and a driving operation part (12) A driving cabin disposed in front of the grain tank (6), (1
3) is an engine unit provided behind the grain tank (6) and having an engine (14) provided inside. (15) takes out the grains in the grain tank (6) via a lower discharge auger (16). It is an auger for carrying out grain upper part. [0006] The cutting section (8) includes a grain cutting header (17) for taking in uncut grain stems, and the header (1).
7) Connect the harvested culm to the threshing section (4) by connecting it to the approximate center of the rear part.
And a feeder house (18) that feeds unremoved grain culm, a reciprocating drive type cutting blade (20), and a grain auger auger (21). In preparation for (17), the harvested grain culm taken into the header (17) is fed to a threshing unit (4) via a supply chain conveyor (22) provided in a feeder house (18) to perform threshing processing. are doing. [0007] A second reduction cylinder (23) is provided on the right outside of the threshing unit (4), and is provided so that the second processed product is returned to the sorting unit and re-sorted. As shown in FIGS. 4 to 9, an engine radiator (2) for cooling a combustion chamber of the engine (14) is provided.
4) and an outside air suction fan (25) for cooling the radiator
And an intercooler (26) for cooling the blower of the operating cabin (11) is disposed in a radiator cooling chamber (27) above the engine section (13), and an engine room (28) below the engine section (13). Are configured to be isolated. An engine cover (29) is provided on the right outside of the engine section (13) so as to be freely opened and closed.
A circular outside air inlet (30) for taking in cooling air as outside air into the cooling chamber (27) is opened in the engine cover (29), and a rotary screen (31) for dust prevention is provided in the inlet (30). And the screen (31)
The oil cooler (26) and the radiator (24) are cooled by clean air after dust removal. The screen (31) is rotatably supported on a central support shaft (33) by a support frame (32) fixed in the oblique diameter direction of the outside air intake (30) inside the engine cover (29). As shown in FIG. 10, the circumscribed and inscribed rollers (34) and (3) press the bent peripheral portion (31a) of the screen (31) from the outer and inner peripheral sides.
5) is connected to the same arm support shaft (3) of the support frame (32).
6) The circumscribed and inscribed arms (3
7) pivotally supporting the distal end and the intermediate portion of (38), respectively, and a spring mounting piece (39) at the distal end of the inscribed arm (38);
Roller pressure spring (40) between the ends of the circumscribed arm (37)
A screen rotation motor (41) provided on the circumscribing arm (37) to rotate the circumscribing roller (34)
Thus, the screen (31) is configured to rotate. [0011] A cylindrical intake duct (43), which faces the intake port (42) in the radial direction on the right surface of the screen (31), is fixedly supported on the engine cover (29). Is connected through a suction pipe (47) to a fan case (46) of an intake fan (45) disposed at the rear left portion of the cooling chamber (27). The dust adhering to the surface of the screen (31) with the air suction force of (45) is removed by the suction port (42).
The engine (1) is sucked into the intake duct (43).
4) It is configured to be discharged through the exhaust pipe (48) below the machine stand (1) on the left rear side. In the drawings, (49) and (50) are air cleaners and pre-cleaners for combustion air supplied to the engine (14), and (51) is an exhaust pipe (5) of the engine (14).
This is a muffler provided in 2). The screen (31) is formed by bending a disc-shaped outer periphery by approximately 90 degrees to form a bent peripheral portion (31a). The outer end side of the peripheral portion (31a) is circumscribed and inscribed by a roller. (34) The elastic brush base (5) which is pressed and supported by (35) and has a seal brush (53) made of synthetic resin implanted therein.
3a) is fixed to the outer peripheral surface on the inner end side of the peripheral portion (31a). A cylindrical seal body (54) having an inner peripheral surface (54a) having a larger diameter than the outside air intake (30) around the support shaft (33) is integrally fixed to the inner surface of the engine cover (29). A gap (55) formed between the engine cover (29) and the screen (31) by sliding the tip of the brush (53) over substantially the entire width of the inner peripheral surface (54a). Is sealed with a brush (53) so as to prevent dust and the like from entering through the gap (55). A shielding plate (56) having a larger shape than the intake port (42) is provided at a position facing the intake port (42) in the cooling chamber (27) via the screen (31) of the intake duct (43).
And the suction force of the suction fan (25) is
2) It is configured so as to prevent the suction duct (43) from being affected by the suction of the suction fan (25). Further, as shown in FIG. 11, a screen (31) is provided at an intake port (42) of the intake duct (43).
The inlet gap (57) between the lower edge of the U-shaped cross section of the intake duct (43) on the inlet side and the surface of the screen (31) with respect to the rotation direction is enlarged to a certain wide width (T), and is on the outlet side. Exit gap (5) between the upper edge and the screen (31) surface
8) is narrowed to a fixed narrow width (t), so that dust adhering to the surface of the screen (31) during rotation of the screen (31) can easily enter the intake duct (43) through the inlet gap (57), and The configuration is such that dust entering the duct (43) is maximally prevented from exiting through the outlet gap (58), and complete suction and removal of dust by the intake duct (43) is performed. On the other hand, as shown in FIGS. 3, 4, and 12, a forward / reverse gear mechanism (5) for driving the reaping unit (8) forward / reverse rotation.
9) is provided in a cutting input case (60) provided below between the feeder house (18) and the rear part of the driver's seat (11), and the input shaft (61) of the input case (60) is connected to the engine (14). Pulley (63) to counter shaft (62) from
(64) and the belt (65), and the output shaft (66) of the input case (60) is connected to the cutting drive shaft (67) of the feeder house (18) by a sprocket (6).
8) They are linked to each other via (69) and chain (70). Also, two driven bevel gears (72) and (73) that idle and support the output shaft (66) in opposition to the center drive bevel gear (71) attached to the input shaft (61) are connected to the drive shaft.
The outer gear portions (74a) (74b) of the slide gear (74) which are always meshed symmetrically with each other at 0 degrees and which are splined slidably on the output shaft (66) between the opposed bevel gears (72) and (73). Switching fork (75)
The output shaft (66) is configured to rotate forward and reverse by meshing with the inner gear portions (72a) (73a) of the two driven bevel gears (72) (73). A forward / reverse switching lever (78) is provided via a lever mounting plate (77) on a rear cabin frame (76) connecting the front right side of the threshing unit (4) and the rear of the operating cabin (10). The switching lever (78) is provided between the threshing unit (4) and the driving cabin (10) at the side of the driver's seat (11), and the fork shaft (79) of the fork (75) is slidably operated. The switching lever (78) is interlockedly connected to the moving arm (80) via a rod (81), the hand is put out of the window on the left side of the driving cabin (10), the switching lever (78) is operated, and the fork (78) is operated. By directly transmitting the switching operation force of the operator to the member 75) via the rod (81), it is possible to easily and surely switch between the forward and reverse rotations. In this embodiment, the engine cover (29) and the rotary screen (3) are constructed as described above.
1) A gap (55) formed between the screen bending peripheral edges (31a) is hermetically sealed by a brush (53) which is brought into sliding contact with the seal inner peripheral surface (54a) on the cover (29) side. To prevent dust from entering the interior.
Compared with a conventional one using a rubber lip seal, the motor (41) that rotates the screen (31) by improving the followability to the cover (29) to improve the sealing performance and by reducing the sliding resistance is improved. The drive load is reduced to extend the life of the motor (41), reduce the capacity of the motor (41), and furthermore, the inner peripheral surface of the seal (54a) centered on the rotation shaft (33) of the screen (31). With brush (53)
The seal with the brush (53) makes it possible to achieve a highly accurate sealing in which the fluctuations in the seal portion are suppressed to the maximum.
This complicates the path of dust and improves the sealing effect. As shown in FIG. 13, brushes (53) are implanted on both the screen bending peripheral portion (31a) and the inner peripheral surface (54a) of the seal, and the brushes (53) are disposed to face each other. This makes it possible to further increase the sealing effect by further complicating the dust intrusion path. The effect can be further improved by providing the sealing portion with the brush (53) at two or more opposing locations. In the above embodiment, the brush (5
Although the configuration 3) is used for the dust-proof device, it can also be used for a dust-collecting device. FIG. 14 shows an example in which water in the engine radiator (24) is used as a heat source of an air heater (82) for heating the inside of the operating cabin (10). The oil cooler (83) for cooling the hydraulic oil of the hydraulic cylinder (9) for mowing up and down
In the structure in which the air heater (82) and the oil cooler (83) are connected, a pipe (84) is connected, and the heat source of the oil cooler (83) closer to the radiator (24) is used. The path can be shortened to simplify the structure. As is apparent from the above embodiment, the present invention sucks dust adhering to the surface of the rotary screen (31) into the intake duct (43) by the suction force of the intake fan (45). Nde thereby removing, dust mobile agricultural machine for sealing the gap between the protective cover (29) and a low <br/> elementary screens (31) covering the periphery of the rotary screen (31) and (55) a sealing brush (53) In the device,
Attraction force of suction fan (25) of radiator cooling chamber (27)
Reaches the intake port (42) of the intake duct (43).
Sandwich the rotary screen (31)
When a shielding plate (50) is provided so as to face the air inlet (42)
Both are inserted in the rotation direction of the rotary screen (31).
The entrance gap (57) of the intake port (42) on the mouth side is widened.
Comb, protruding in the direction of rotation of the rotary screen (31)
The outlet gap (58) of the intake port (42) on the mouth side is narrowed.
In Kusuru those exhibits can be prevented from entering the dust, a remarkable effect like can Rukoto reduce the driving load of Russia <br/> over Tari screen (31).

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of a seal portion of a rotary screen. FIG. 2 is an overall side view of the combine. FIG. 3 is an overall plan view of the combine. FIG. 4 is an explanatory front view of the combine body. FIG. 5 is an explanatory side view of the engine unit. FIG. 6 is an explanatory rear view of the engine unit. FIG. 7 is an explanatory plan view of an engine unit. FIG. 8 is an explanatory side view of the rotary screen unit. FIG. 9 is an explanatory plan view of a rotary screen unit. FIG. 10 is an explanatory diagram of a rotation drive unit of the rotary screen. FIG. 11 is an explanatory sectional view of an intake duct. FIG. 12 is an explanatory sectional view of a reaping input case section. FIG. 13 is an explanatory diagram of a dustproof brush. FIG. 14 is an explanatory diagram of an operation cabin having an air heater. [Description of Signs] (29) Cover (31) Rotary Screen (43) Intake Duct (53) Brush (55) Clearance

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Koichi Kawasaki 428 Enami, Okayama City In the company of Seirei Industrial Co., Ltd. (56) References JP-A-7-81437 (JP, A) JP-A-5-38396 JP, A) Japanese Utility Model Hei 6-43224 (JP, U) (58) Fields studied (Int. Cl. ⁷ , DB name) A01B 71/08 A01D 41/12 B60K 13/02 F01P 11/12

Claims (1)

(57) the dust adhering to the surface of the Claims 1] rotary screen (31), thereby removing sucks in intake duct (43) with at suction force of the suction fan (45), wherein A protective cover (29) covering the periphery of the rotary screen (31)
In a dust remover of a mobile agricultural machine, a gap (55) between the rotary screen (31) and the rotary brush (31) is sealed with a seal brush (53).
Of the suction fan (25) of the radiator cooling chamber (27).
The suction force is applied to the intake port (42) of the intake duct (43).
Rotate the rotary screen (31) to prevent
A shielding plate (50) is provided opposite to the intake port (42).
In the direction of rotation of the rotary screen (31).
On the other hand, the inlet clearance (5)
7) Increase the direction of rotation of the rotary screen (31)
The outlet clearance (5) of the intake port (42) on the outlet side with respect to
8) A dust remover for a mobile agricultural machine, characterized in that: