combine

Abstract

To provide a combine having, on a machine rear part, a cleaning device which obtains a drive force from a swing drive pulley on a swing separation shelf of a thresher device and moves the mud fallen from a drive crawler from the road surface in a right-left direction, having a problem of not sufficiently removing the mud depending on a drive speed due to linkage of the work speed of the cleaning device with the drive speed, by allowing a setting switch of the work speed of the cleaning device.SOLUTION: A combine includes a cleaning device 10 on a rear part of a machine body having a drive deice 4, a reap device, and a thresher device 6. A clean brush 52 is driven by winding a cleaning transmission belt 52d between a transmission pulley 61b of the thresher device 6 and a following split pulley 52c which can change a pitch diameter of the cleaning device 10.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a combine harvester equipped with a threshing device that threshes grain stalks harvested by a reaping device. [Background technology]

[0002] There is a combine harvester equipped with a cleaning device at the rear of the machine body that receives driving force from a swinging drive pulley of the swinging sorting shelf of the threshing device and moves mud that has fallen from the traveling crawler from the road surface in the left and right directions (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-287438 Summary of the Invention [Problem to be solved by the invention]

[0004] However, since the operating speed of the cleaning device is linked to the traveling speed, depending on the traveling speed, the mud may not be removed sufficiently.

[0005] Therefore, the present invention provides a combine harvester in which the operating speed of the cleaning device can be set and switched. [Means for solving the problem]

[0006] The invention described in claim 1 is a combine harvester having a cleaning device 10 at the rear of a body equipped with a traveling device 4, a harvesting device 15, and a threshing device 6, in which a cleaning transmission belt 52d is wound between one of the transmission pulleys 61b of the threshing device 6 and a driven split pulley 52c of the cleaning device 10, the pitch diameter of which can be freely changed, to drive the cleaning brush 52.

[0007] According to the invention described in claim 1, the operating speed of the cleaning brush 52 can be increased or decreased by changing the pitch diameter of the driven split pulley 52c, so that mud adhering to the road can be appropriately eliminated. This reduces the labor required for manual cleaning work to return the mud to the field.

[0008] The invention described in claim 2 is a combine described in claim 1, in which the threshing device 6 is equipped with an oscillating sorting shelf 36 that oscillates and sorts the grains, a winnower 40 that blows air, a first conveying spiral 41 that transports the sorted grains, and a second conveying spiral 42 that transports a mixture of straw scraps and grains, and the transmission pulley 61b is either the oscillating drive pulley 61b of the oscillating sorting shelf 36, the winnower drive pulley 20b of the winnower 40, the winnower driven pulley 40b of the winnower 40, the first drive pulley 41b of the first conveying spiral 41, the second drive pulley 42b of the second conveying spiral 42, or the threshing device input pulley 60 of the threshing device 6.

[0009] The invention described in claim 3 is a combine described in claim 1, which is provided with a rotation sensor 53 that detects the rotation speed of the cleaning brush 52 of the cleaning device 10, and which transmits the rotation speed information of the cleaning brush 52 detected by the rotation sensor 53 to a control device 18 via a transmission means such as a harness or wireless communication, and which has a display device 17 that displays the rotation speed of the cleaning brush 52 based on the rotation speed information of the cleaning brush 52.

[0010] According to the invention described in claim 3, by looking at the rotation speed of the cleaning brush 52 displayed on the display device 17, it is possible to visually determine whether the rotation speed of the cleaning brush 52 is appropriate, thereby preventing a situation where the rotation speed is too slow to remove mud, or a situation where the rotation speed is too fast and causes accelerated wear of the rotating brush 52a.

[0011] The invention described in claim 4 is a combine described in any one of claims 1 to 3, in which the cleaning device 10 is provided with a water tank 51, a sprinkler nozzle 51e that sprays water from the water tank 51 onto the cleaning brush 52 or near the front side thereof, and an opening / closing cock 51d that changes the amount of water sprayed by the sprinkler nozzle 51e.

[0012] According to the invention of claim 4, by sprinkling water on the cleaning brush 52 of the cleaning device 10 or near the front side thereof, it is possible to promote the removal of mud, thereby reducing the labor required to return the mud to the field.

[0013] Furthermore, by changing the amount of water sprayed by adjusting the opening / closing amount of the on-off cock 51d, there is no need to provide a pump or the like, and an increase in weight and number of parts can be suppressed. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a side view of a combine harvester according to an embodiment of the present invention. [Figure 2] 1 is a plan view of a combine harvester according to an embodiment of the present invention. [Figure 3] 1 is a side cross-sectional view of a threshing device of a combine according to an embodiment of the present invention. [Figure 4] FIG. 2 is a side view showing a main part of the rear of the combine harvester according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0015] A combine harvester 1 according to one embodiment of the present invention will be described below with reference to the accompanying drawings. To facilitate understanding, the directions are described by referring to the front as the front side, the rear as the rear side, the right side as the right side, and the left side as the left side, as seen from the operator, but the configuration is not limited to these directions.

[0016] <Overall configuration of the combine> As shown in Figures 1 and 2, the combine harvester 1 has a traveling device 4 mounted on the lower side of a chassis 2, with a pair of left and right traveling crawlers 3 that travel on the soil surface. On the left and right sides of the chassis 2, a threshing device 6 that threshes and sorts the stalks that are clamped and transported by a feed chain 5, a grain tank 7 as a storage device for temporarily storing the grains, and a grain discharging auger 8 that discharges the grains stored in the grain tank 7 outside the machine. A straw disposal device 9 is mounted at the rear end of the threshing device 6, and a cleaning device 10 is provided behind the straw disposal device 9. The grain discharging auger 8 is raised and lowered by operating an auger lifting cylinder when discharging grains.

[0017] In front of the threshing device 6, a harvesting device 15 having a grass dividing body 11 that divides uncut stalks from the front end, a raising section 12 that raises the divided stalks, a cutting blade section 13 that cuts the raised stalks, and a supply adjustment transport section that rakes in the cut stalks and adjusts the handling depth during transport and hands it over to the feed chain 5 is suspended from the front end of the chassis 2 so that it can be raised and lowered freely relative to the soil surface by a harvesting lifting cylinder.

[0018] An operating device for controlling the operation of the combine 1 and an operating seat where the operator sits are provided at the upper rear of the reaping device 15, an engine is mounted below the operating seat, the grain tank 7 is located at the rear, and a cabin 16 is provided to cover the operating device and operating seat, and these traveling devices 4, threshing device 6, reaping device 15, operating device, engine, cabin 16, etc. are mounted on the chassis 2 of the combine.

[0019] The operating device is equipped with various operating tools such as a main speed change lever that is operated forward and backward by the operator sitting in the operating seat to operate a speed change actuator that switches between forward and backward travel and stopping and switches the main speed, a left and right traveling actuator that is operated by tilting left and right to operate the left and right side clutches and left and right side brakes of the left and right traveling crawlers 3, 3, allowing left and right steering when traveling straight and turning in various turning modes, a steering lever that is operated forward and backward to operate the reaping lifting cylinder to raise and lower the reaping device 15, a reaping and de-reaping lever that operates the reaping and de-reaping clutch actuator to turn the drive of the reaping device 15 and the threshing device 6 on and off, an auger operating lever that moves the threshing auger 8 up and down by operating the auger lifting cylinder and moves it left and right by operating the left and right turning actuator, and an auger drive switch lever that operates the auger drive electromagnetic clutch that turns the drive of the threshing auger 8 on and off, thereby discharging the grain in the grain tank 7 out of the machine.

[0020] A monitor 17 is provided in front of the operator's seat in the cabin 16 as a display device that receives input information from the operating devices and various sensors and displays various information.

[0021] A control device 18 is provided below the operating device in the cabin 16 and receives input information from the operating device and various sensors to control the operation of various parts.

[0022] <Threshing Device 6> As shown in Figure 3, a threshing chamber 30 is provided at the top of one side of the threshing device 6, where the stalks harvested by the harvesting device 15 and transported by the feed chain 5 are threshed. Within the threshing chamber 30, a threshing drum 31 is mounted on a threshing drum shaft 32. The threshing drum shaft 32 is mounted on a front plate 33 and a middle plate 34A. 34 is a rear plate provided behind the middle plate 34A.

[0023] The lower side of the threshing drum 31 is mainly surrounded by a threshing net 35.

[0024] Below the handling net 35 is a transfer shelf 37 at the start end of a swinging sorting shelf 36. A sieve 38 for separating grains from foreign matter is provided on the swinging sorting shelf 36 downstream of the transfer shelf 37, and a straw rack 39 for transporting straw scraps is provided downstream of the sieve 38.

[0025] A winnower 40 is provided below the transfer shelf 37 of the oscillating sorting shelf 36, and the winnower 40 blows air in the direction in which the oscillating sorting shelf 36 oscillates.

[0026] Below the sieve 38 of the swinging sorting shelf 36, a first conveying spiral 41 is provided to convey the sorted grains to the grain tank 7.

[0027] A second conveying spiral 42 is provided below the straw rack 39 at the rear of the swinging sorting shelf 36 to convey the mixture of straw scraps and grains to the mashing chamber 30.

[0028] At the end of the feed chain 5, a straw waste conveying device 43 for transporting the processed stalk is provided, and at the end of the straw waste conveying device 43, a straw waste processing device 9 is provided.

[0029] Therefore, the root side of the stalk is cut by the cutting device 15, and the cut stalk is supplied to the threshing device 6 by the feed chain 5.

[0030] The supplied stalks are processed in the handling chamber 30, and the processed stalks are passed on from the feed chain 5 to the straw waste conveying device 43, which then transports them to the straw waste processing device 9.The stalks are then shredded by a cutter (not shown) in the straw waste processing device 9 and released into the field.

[0031] The processed material that has been threshed in the threshing chamber 30 and flows down the handling net 35 is received on the oscillating sorting shelf 36 and moves backward while being oscillated and sorted while being exposed to the sorting wind from the winnower 40. The sorted grains that fall downward from the sieve 38 are transported to the grain tank 7 by the first conveying spiral 41, and the mixture of straw scraps and grains that falls downward from the straw rack 39 is transported to the front of the threshing chamber 30 by the second conveying spiral 42 and threshed again.

[0032] Here, the drive system of the threshing device 6 will be explained.

[0033] As shown in Figure 4, the winnower 40 is driven and rotated by a winnower transmission belt 40c wound between a winnower drive pulley 20b provided on a winnower drive shaft 20a of the transmission case 20, which changes the driving force of the engine, and a winnower driven pulley 40b provided on a winnower rotation shaft 40a of the winnower 40.

[0034] An input transmission belt 60a is wound between the threshing device input pulley 60, to which rotational driving force is transmitted from the transmission case 20, and a swing drive pulley 61b provided on the swing drive shaft 61a of the swing sorting shelf 36, to drive the swing sorting shelf 36 in a reciprocating swing motion.

[0035] The swing drive pulley 61b is a three-stage pulley, and serves as a drive pulley for the first conveying spiral 41 and the second conveying spiral 42, as well as a drive pulley for the cleaning device 10, which will be described later.

[0036] A spiral transmission belt 61c is wound between the swing drive pulley 61b of the three-stage pulley, the first drive pulley 41b provided on the first conveying spiral drive shaft 41a of the first conveying spiral 41, and the second drive pulley 42b provided on the second conveying spiral drive shaft 42a of the second conveying spiral 42, so that the first conveying spiral 41 and the second conveying spiral 42 are driven to rotate.

[0037] <Cleaning device 10> As shown in FIG. 4, the cleaning device 10 has an upper part of a cleaning device case 50 connected and fixed to a rear frame 9a of the straw disposal device 9.

[0038] The cleaning device 10 is configured by providing a water tank 51 at the top of a cleaning device case 50 and a cleaning brush 52 below the water tank 51.

[0039] The water tank 51 has a water supply port 51a at the top with a lid 51b that can be opened and closed freely, and a water nozzle 51e is attached to the lower end of a water supply pipe 51c at the bottom via an opening and closing cock 51d that can adjust the amount of water discharged.

[0040] The water spray nozzle 51e is disposed above and in front of the rotating brush 52a of the cleaning brush 52 to spray water.

[0041] The cleaning brush 52 has a cleaning rotation shaft 52b on the left and right sides of the rotating brush 52a that is rotatably mounted on the cleaning device case 50, and a cleaning transmission belt 52d is wound between a driven split pulley 52c provided at the end of the cleaning rotation shaft 52b and a three-stage oscillating drive pulley 61b, thereby driving and rotating the rotating brush 52a.

[0042] The driven split pulley 52c is a continuously variable speed split pulley whose pitch diameter is changed by a split pulley electric motor, and the split pulley electric motor is activated by a command from the control device 18 based on the operation of the cleaning rotation operating device described below, thereby changing the pitch diameter of the driven split pulley 52c and changing the rotation speed (rotational speed) of the cleaning rotation shaft 52b.

[0043] A rotation sensor 53 for detecting the number of rotations of the cleaning rotary shaft 52b is provided near the cleaning rotary shaft 52b.

[0044] Information about the number of rotations of the cleaning rotary shaft 52b detected by the rotation sensor 53 is input to the control device 18 via a harness or wireless communication.

[0045] The control device 18 displays the input rotation speed of the cleaning rotary shaft 52b on the monitor 17 inside the cabin 16.

[0046] Inside the cabin 16, there is provided a cleaning rotation operating device as an operating device that operates the split pulley electric motor to change the pitch diameter of the driven split pulley 52c and change the number of rotations (rotational speed) of the rotary brush 52a.

[0047] Therefore, the number of rotations (rotational speed) of the rotary brush 52a can be changed (increased or decreased) by changing the pitch diameter of the driven split pulley 52c by operating the cleaning rotation operating device inside the cabin 16, thereby appropriately eliminating mud adhering to the road. This reduces the labor required for manual cleaning work to return the mud to the field.

[0048] In addition, the operator seated in the operating seat inside the cabin 16 and operating the aircraft can visually determine whether the rotational speed (rotational speed) of the rotating brush 52a is appropriate by looking at the rotational speed (rotational speed) of the rotating brush 52a displayed on the monitor 17, thereby preventing mud from being removed due to a slow rotational speed (rotational speed) or rapid wear of the rotating brush 52a due to a fast rotational speed (rotational speed).

[0049] In addition, after opening the lid 51b of the water supply port 51a at the top of the water tank 51 and supplying water into the water tank 51, the lid 51b is closed and the opening / closing cock 51d at the lower end of the water supply pipe 51c at the bottom is opened so that the water spray nozzle 51e can spray a predetermined amount of water, and when cleaning work begins, water is sprayed near the front side of the rotating brush 52a of the cleaning device 10, which makes it easier to remove the mud and reduces the effort required to return the mud to the field.

[0050] At this time, by changing the amount of water sprayed by adjusting the opening and closing amount of the on-off cock 51d, there is no need to provide a pump or the like, and an increase in weight and number of parts can be suppressed.

[0051] Furthermore, if the opening and closing of the opening and closing cock 51d is performed by an electric motor, and an opening and closing cock operation switch that operates the electric motor is provided as an operating device inside the cabin 16, the operator sitting in the operating seat inside the cabin 16 and piloting the aircraft can operate the opening and closing cock operation switch to open and close the opening and closing cock 51d, which will further improve operability.

[0052] In addition, the control device 18 may operate the electric motor based on the rotation speed information of the cleaning rotating shaft 52b detected by the rotation sensor 53, and change the pitch diameter of the driven split pulley 52c to control the rotating brush 52a to a predetermined rotation speed (rotational speed).

[0053] <Other embodiments> Although an example has been shown in which the drive of the cleaning brush 52 of the cleaning device 10 is transmitted from the swing drive pulley 61b, the drive may be transmitted from any location.

[0054] (1) The winnowing machine 40 has a winnowing machine drive pulley 20b or a winnowing machine driven pulley 40b as a two-stage pulley, and a cleaning transmission belt 52d is wound between the winnowing machine drive pulley 20b or the winnowing machine driven pulley 40b and a driven split pulley 52c to drive and rotate the rotating brush 52a (cleaning brush 52). In other words, the cleaning brush 52 is driven and rotated from the drive system of the winnowing machine 40.

[0055] (2) The No. 1 driving pulley 41b of the No. 1 conveying spiral 41 or the No. 2 driving pulley 42b of the No. 2 conveying spiral 42 is a two-stage pulley, and a cleaning transmission belt 52d is wound between the No. 1 driving pulley 41b or the No. 2 driving pulley 42b and the driven split pulley 52c to drive and rotate the rotating brush 52a (cleaning brush 52). In other words, the cleaning brush 52 is driven and rotated by the drive system of the No. 1 conveying spiral 41 or the No. 2 conveying spiral 42.

[0056] (3) The threshing device input pulley 60 of the threshing device 6 is a two-stage pulley, and a cleaning transmission belt 52d is wound between the threshing device input pulley 60 of the threshing device 6 and the driven split pulley 52c to drive and rotate the rotating brush 52a (cleaning brush 52). In other words, the cleaning brush 52 is driven and rotated from the input drive system of the threshing device 6. [Explanation of symbols]

[0057] 4 Running gear 6. Threshing equipment 10 Cleaning equipment 15 Reaping device 17 Display device (monitor) 18 Control Device 20b Winnower drive pulley 36 Swinging sorting shelf 40 Karakinou 40b Winnower driven pulley 41 No. 1 conveying spiral 41b No. 1 drive pulley 42 No. 2 conveying spiral 42b No. 2 drive pulley 51 Water Tank 51d Opening and closing cock 51e Watering nozzle 52 Cleaning Brush 52c Driven split pulley 52d Cleaning transmission belt 53 Rotation Sensor 60 Threshing device input pulley 61b Transmission pulley (swing drive pulley)

Claims

1. A combine harvester having a cleaning device (10) at the rear of a machine body equipped with a traveling device (4), a harvesting device (15), and a threshing device (6), characterized in that a cleaning transmission belt (52d) is wound between any of the transmission pulleys (61b) of the threshing device (6) and a driven split pulley (52c) of the cleaning device (10) whose pitch diameter is freely changeable, to drive the cleaning brush (52).

2. The combine harvester of claim 1, characterized in that the threshing device (6) is equipped with an oscillating sorting shelf (36) that oscillates and sorts grains, a winnowing machine (40) that blows air, a first conveying spiral (41) that transports the sorted grains, and a second conveying spiral (42) that transports a mixture of straw scraps and grains, and the transmission pulley (61b) is either an oscillating drive pulley (61b) of the oscillating sorting shelf (36), a winnowing machine drive pulley (20b) of the winnowing machine (40), a winnowing machine driven pulley (40b) of the winnowing machine (40), a first drive pulley (41b) of the first conveying spiral (41), a second drive pulley (42b) of the second conveying spiral (42), or a threshing device input pulley (60) of the threshing device (6).

3. The combine harvester according to claim 1, further comprising a rotation sensor (53) for detecting the rotation speed of the cleaning brush (52) of the cleaning device (10), wherein the rotation speed information of the cleaning brush (52) detected by the rotation sensor (53) is transmitted to a control device (18) via a transmission means such as a harness or wireless communication, and wherein the control device (18) displays the rotation speed of the cleaning brush (52) based on the rotation speed information of the cleaning brush (52).

4. A combine harvester as described in any one of claims 1 to 3, characterized in that the cleaning device (10) is provided with a water tank (51), a sprinkler nozzle (51e) that sprinkles water from the water tank (51) onto the cleaning brush (52) or near the front side thereof, and an opening / closing cock (51d) that changes the amount of water sprinkled by the sprinkler nozzle (51e).

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