JP3547306B2 - Harvester grain discharger - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a grain discharging device in a harvester such as a combine or a harvester.
[0002]
[Prior art]
Conventionally, a grain tank of a combine is provided with a lifting cylinder capable of turning on a vertical axis, which stands along a side wall through a bottom gutter part, and is provided at an upper portion of the lifting cylinder so as to be able to tilt up and down via a transfer part. And a discharge device in a storage position when discharging the grains contained in the grain tank to a carrier (grain container) such as a truck waiting on the road. The cylinder is raised and tilted and swiveled through the lifting cylinder to discharge the grains from the discharge port at the distal end of the discharge cylinder in a state where the cylinder is positioned in the discharge posture, thereby performing the work of discharging the grains.
[0003]
The grain discharging device has a storage contact piece and a discharge contact piece protruding from a peripheral surface of a lifting cylinder that is rotationally driven by a drive motor, and moves the lifting cylinder to a discharging posture side and a storage posture side. When turning, the storage switch and the discharge switch, each of which is a swing contact piece type limit switch individually attached and fixed around a support case that rotatably supports the lifting cylinder, are connected to the storage contact piece and the discharge contact piece. The drive motor is stopped by contacting and pushing each of them separately, and the lifting cylinder is turned and stopped in the storage position and the discharge position.
[0004]
[Problems to be solved by the invention]
In the grain discharging device according to the above-described conventional configuration, the storage switch and the discharging switch are attached and fixed to the mounting pieces that are separately mounted so as to be opposed to the support case, respectively. When the dust and straw debris scattered from the culm processing device such as a cutter located on the side of the grain discharge device accumulate in this area, When performing maintenance work such as removing the deposits or adjusting the position of the contact pieces of both switches and the contact pieces on the lifting cylinder side, cleaning is performed at a plurality of locations in different directions around the lifting cylinder. And maintenance work such as positioning adjustment and the like, there is a problem that the work is complicated and difficult to perform.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problems, the grain discharging device of the harvester according to the present invention firstly comprises a lifting tank having a storage contact piece and a discharge contact piece protruding from a peripheral surface on one side of a grain tank. The feed cylinder is erected by a drive motor so as to be rotatable, and includes a swing contact piece type limit switch provided on a support frame side for rotatably supporting the lift cylinder when the lift cylinder is rotated. In a harvester, a storage switch and a discharge switch are brought into contact with the storage contact piece and the discharge contact piece, respectively, to stop the drive motor and stop the swiveling of the lifting cylinder between the storage position and the discharge position. A single plate-shaped mounting plate is provided on the frame, and a storage switch and a discharge switch are separately mounted and fixed on upper and lower surfaces of a mounting piece formed on the mounting plate .
[0006]
Second, the switch body of the storage switch is attached and fixed to the mounting plate so that the tip of the contact piece is close to the peripheral surface of the lifting cylinder and the pivot point is away from the lifting cylinder. It is characterized by:
[0007]
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, A is a combine shown as an example of a harvester. A driver's seat 4 and a grain tank 5 are disposed from the front on the right side, and the grains threshed by the threshing unit 3 are stored in the grain tank 5. A grain discharging device (discharge auger) 6 is installed in the rear of the grain tank 5 with a configuration to be described later and accommodates the stored grains, for example, a truck bed (grain container) or the like waiting on the road. It is configured to take out and discharge.
[0009]
As shown in FIG. 1, the grain discharge device 6 is a support tube that stands upright along the tank rear wall at the terminal end of a horizontal feeding spiral 51 that is provided horizontally in the bottom gutter 50 of the grain tank 5. (Refraction transmission case) 52 and a lift which is fitted and inserted into a rotation support portion 53 formed in the support cylinder 52 and has a halfway portion loosely supported in a holder 55 extending from the grain tank 5 side. A cylinder 60 and a discharge cylinder 62 and the like, which are connected to the upper end of the lifting cylinder 60 in the same manner as the conventional one by a tilting mechanism 61a such as a transfer part 61 and a hydraulic cylinder so as to be vertically tiltable. Has an internal auger (grain transfer spiral) 6a rotatably cooperatively rotatable through the transfer section 61 therein.
[0010]
In a non-working posture such as performing a harvesting operation without discharging the grain, the grain discharging device 6 connects the tilting mechanism 61a and the turning mechanism 7 described with reference to FIGS. By operating the operation lever 8 installed on the side, the lifting cylinder 60 and the discharge cylinder 62 are switched to the retracted position, so that the discharge cylinder 62 can be stably placed in the receiver 80 erected on the body. I have to.
Further, when performing the grain discharging operation, the operating lever 8 is appropriately operated up, down, left, and right, so that the discharging cylinder 62 is moved up and away from the receiving member 80 via the tilting mechanism 61a, and is then moved via the turning mechanism 7 via the turning mechanism 7. After rotating the lifting cylinder 60 to the position shown by the dotted line in FIG. 1 and rotating the agitating spiral 51 and the auger 6 a, the grains in the grain tank 5 are discharged to the discharge port 65 of the discharge cylinder 62. Can be discharged out of the machine.
[0011]
Next, the configuration of the turning mechanism 7 will be described. The turning mechanism 7 is rotatable between the support cylinder 52 and the holder 55 by a mating-type support case 7b (support frame) in which the lifting cylinder 60 is fixedly supported from the machine base 1 via a support 7a. A drive motor M for rotating and driving a pinion gear 71 via a speed reduction mechanism, and a turning position of the lifting cylinder 60 are detected and mounted on a mounting base 70 which is loosely supported and integrated with the support case 7b. The position detecting device 9 for stopping the driving of the motor M is mounted and fixed, and the pinion gear 71 of the driving motor M is meshed with a large-diameter disc-shaped revolving gear 72 fixedly formed around the lifting cylinder 60 for lifting. The cylinder 60 is driven to switch between a storage position and a discharge position, and the turning gear 72 is provided with an excessive turning prevention mechanism 75.
The excessive turning prevention mechanism 75 makes the stopper 76 protruding from the lower surface of the turning gear 72 contact the end of a stopper screw 78 screwed into a holder screw 77 fixed to the mounting base 70 so as to be adjustable in length. By doing so, the overturn of the lifting cylinder 60 toward the storage position is supplementarily restricted. The periphery of the turning mechanism 7 is covered by a cover 56 provided from the grain tank 5 side.
[0012]
Next, the position detecting device 9 will be described with reference to FIG. The position detecting device 9 detects the storage position of the lifting cylinder 60 and stops the operation of the driving motor M, and the storage switch 90 detects the discharging attitude of the lifting cylinder 60 and stops the operation of the driving motor M. The discharge switch 91 to be operated is collectively attached and fixed to one side behind the support case 7b by mounting means to be described later, and the storage switch 90 and the discharge switch 91 are separately brought into contact with each other and activated. The storage position stop operation touch piece (storage touch piece) 92 and the discharge position stop operation touch piece (discharge touch piece) 93 as members are arranged at the storage position and discharge position interval on the peripheral surface of the lifting cylinder 60. And are formed by projecting while making the upper and lower positions different.
[0013]
Note that the storage switch 90 and the discharge switch 91 in the illustrated example, which are generally commercially available with a inexpensive price, the swinging contact element type to ON by the pushing of the contact piece 9a has elasticity to switch body Limit Using a switch.
The contact piece 92 and the contact piece 93 are formed by projecting a mountain-shaped angle member from the peripheral surface of the lifting cylinder 60 to a smooth middle height, so that when the contact piece 9a comes into contact with the contact piece 9a, In this case, it is possible to smoothly push and return operation can be performed smoothly.
[0014]
The mounting structure of the storage switch 90 and the ejection switch 91 will be described. Mounting plate 95 for attachment of both switches 90 and 91, together with the attaching detachably by mounting screws 9 N to behind the support case 7b, one form that bent side view shape inwardly L-shaped The storage switch 90 and the discharge switch 91 are attached to and fixed to the upper and lower surfaces of the inward-facing mounting piece 95a so as to be adjustable in position while being spaced apart from each other along the circumferential direction of the lifting cylinder 60. .
Then, by this positioning adjustment, the tips of the contact pieces 9a of the storage switch 90 and the ejection switch 91 can be made to protrude to the proper positions in the rotation trajectory of the touch pieces 92 and 93, respectively, and can be lifted. When the contact piece 93 pushes the contact piece 9a of the discharge switch 91 when the feeding cylinder 60 turns, the operation of the drive motor M is stopped, and the lifting / feeding cylinder 60 is stopped accurately at the discharge posture position. When the contact 92 moves the contact piece 9a of the storage switch 90, the operation of the drive motor M is stopped, and the lifting cylinder 60 can be accurately positioned and stopped at the storage posture position.
[0015]
Further, in the above mounting configuration, the storage switch 90 and the discharge switch 91 are formed by using the discharge switch 91 and the storage switch 90 as a common mounting member with the mounting plate 95 as a discharge posture turning direction (arrow) of the lifting cylinder 60 shown in FIG. The two switches 90 and 91 are lifted up by being spaced apart from each other on the upper and lower sides of the mounting piece 95a, and being fixed to the upper and lower surfaces of the mounting piece 95a so that the phases thereof can be adjusted so as to be adjustable in position. It can be installed compactly on one side behind the cylinder 60 with a simple and inexpensive configuration, and its surroundings can be configured widely to adjust and replace the switches 90 and 91 , as well as the culling processing device 3a. Maintenance work such as removal and cleaning of deposits such as dust that has invaded from the inside can be easily and appropriately performed.
[0016]
At this time, the ejection switch 91 is positioned and adjusted in the front-rear and left-right directions via the adjusting screw 9T with respect to the upper surface of the mounting plate 95 in a state where the discharging switch 91 is mounted and fixed to the auxiliary mounting plate 96. I'm trying to attach it with a bigger bill.
The storage switch 90 is formed by inserting an adjusting screw 9T into a long hole 90a formed in the switch main body and displacing and displacing the discharge switch 91 from the lower surface of the mounting piece 95a. , 91 are mounted and fixed on a single mounting plate 95, and are positioned behind the lifting cylinder 60.
[0017]
Further, the mounting plate 95 forms a wide space H by cutting out a lower portion of one side of the discharge switch 91 in a state where both switches 90 and 91 are mounted and fixed. In addition to promoting the downward movement of the intruding dust and straw debris, it is possible to easily perform the maintenance work such as removal of the infiltrated dust and straw debris and switch adjustment.
Therefore, when the cover 56 is removed for performing maintenance work, the two switches 90 and 91 fixed and attached by the above configuration can be exposed at the same location behind the lifting cylinder 60 at a time. The maintenance work can be easily performed in the same direction from a wide space.
[0018]
The retracting switch 90 is mounted in the opposite direction to the discharge switch 91, with the swinging end of the contact piece 9a attached in the direction along the rotation direction of the lifting cylinder 60, and the contact piece 92 contacts the contact piece 9a. The contact piece 9a employs an oscillating contact type limit switch having a sliding roller 9b at the tip thereof, and the mounting posture of the contact piece 9a is adjusted. The switch body is adjusted to the adjusting hole 90a at a position where the roller 9b is brought close to the peripheral surface of the lifting cylinder 60 at a position facing the axis of the lifting cylinder 60, and the rotation fulcrum 9c of the contact piece 9a moves away from the axis. By mounting and fixing the mounting piece 95 to the mounting plate 95 in an inclined manner via the adjusting screw 9T so that the swing allowance of the contact piece 9a becomes large in advance, the positioning adjustment of the storage switch 90 can be easily and easily performed. And operation of the contact piece 9a. So that it is possible to satisfactorily perform.
[0019]
Therefore, when the lifting piece 60 is rotated from the position shown by the solid line in FIG. 3 in the direction of the dotted arrow, when the contact piece 92 pushes the contact piece 9a, the contact piece 9a moves in the pushing direction. , It is possible to accurately and accurately detect the position of the storage switch 90 and its contact piece 9a without causing excessive force, and a large adjustment margin is required for mounting the storage switch 90. Even if there is a processing error or an assembly error between the plate 95 and the lifting cylinder 60, there is an advantage that the switch of the storage switch 90 can be easily and appropriately adjusted.
[0020]
In the grain discharging operation by the combine A equipped with the grain discharging device 6 configured as described above, first, the combine A is caused to travel to a truck waiting on the road, and the grain tank 5 side is laid side by side at a predetermined distance. Then, the operation lever 8 is operated to operate the tilting mechanism 61a and the drive motor M, and the discharge cylinder 62 and the lifting cylinder 60 of the grain discharge device 6 are turned upright from the retracted position and turned to the discharge position. When the auger 6a is rotated after the positioning is stopped, the grains in the grain tank 5 are transferred from the discharge port 65 of the grain tank 5 to the inside of the grain container of the truck via the horizontal spiral 51, the lifting cylinder 60, and the discharge cylinder 62. Can be discharged and housed.
[0021]
In the above-described grain discharging operation, when the drive motor M rotates forward based on the discharging side operation of the operation lever 8, the pinion gear 71 drives the turning gear 72, and the lifting cylinder 60 turns from the retracted position to the discharging position (solid line). (In the direction of the arrow), and the contact piece 93 rotates from the solid line to the dotted line, and pushes the contact piece 9a of the discharge switch 91 to turn it on.
As a result, the drive motor M is stopped, the lifting cylinder 60 is stopped in place at the proper discharge posture, and the discharge of the kernels can be satisfactorily performed from the discharge cylinder 62.
Next, when the grain discharging operation is completed and the operation lever 8 is operated to the storage side to rotate the drive motor M in the reverse direction, the lifting cylinder 60 turns backward and the touch piece 92 pushes the contact piece 9a of the storage switch 90. As a result of the reverse rotation of the drive motor M being stopped , the lifting cylinder 60 is stopped at the proper storage posture at that position, and the discharge cylinder 62 can be stored satisfactorily.
[0022]
In this case, storage switch 90, with which as much as possible proximity to the axis of the pumped tube 60 the tip of the contact piece 9a, and have contact at a position away a rotation fulcrum 9c of contact pieces 9a from axial, Since the switch body is provided on the mounting plate 95 so as to be inclined in the retreating direction, the contact piece 9a can be accurately pushed by the contact piece 92 with a sufficient contact allowance, and the contact piece 9a can be pushed. It is possible to allow a margin for the movement in the moving direction, and it is possible to accurately detect the contact piece 9a without causing excessive force.
Further, since the adjustment allowance for mounting the storage switch 90 increases, even if there is a processing error or an installation error between the mounting plate 95 and the lifting cylinder 60, the switch of the storage switch 90 is easily and appropriately adjusted. There are advantages such as being able to.
[0023]
【The invention's effect】
The present invention configured as described above has the following effects.
According to the first aspect of the present invention, when the lifting cylinder is turned by the drive motor, the storage switch and the discharge switch are attached and fixed to the mounting plate protruding from the support frame side. Since the storage and ejection pieces protruding from the peripheral surface are accurately brought into contact with each other and pushed, the lifting cylinder is accurately positioned and stopped in the storage position and the discharge position by stopping the drive motor. Thus, the discharging operation and the storing operation of the grain discharging device can be performed favorably.
In addition, the storage switch and the discharge switch attached and fixed to the single mounting plate as described above can be compactly installed with a simple configuration, for example, on one side behind the lifting cylinder, and thereby, There is an advantage that the maintenance work can be easily performed at once from one side of the lifting cylinder without performing the maintenance work separately at a different place unlike the conventional one.
[0024]
Also , the storage switch and the discharge switch are separately mounted and fixed on the upper and lower surfaces of a mounting piece formed on the mounting plate, so that the storage switch and the discharge switch are brought close to each other while the storage switch and the discharge switch are brought close to each other while the mounting plate is used as a common mounting member. The interference of the contact pieces can be prevented, and the switch can be compactly installed on one side of the transport cylinder, and the periphery of each switch can be formed widely, so that dust or the like can be removed or the position of the switch can be adjusted. Maintenance work can be easily performed.
[0025]
According to the second aspect of the present invention, the switch body of the storage switch is tilted to the mounting plate so that the tip of the contact piece is close to the peripheral surface of the lifting cylinder and the pivot point is away from the lifting cylinder. Since the contact piece has a sufficient contact allowance with the contact piece and can be accurately operated by being fixed, the contact piece can have a sufficient allowance for movement in the pushing direction. Detection can be performed accurately without causing excessive force on the piece.
In addition, since the adjustment allowance for the storage switch can be increased, the storage switch can be easily and appropriately adjusted to fix the storage switch even if there is an error in processing or assembling the mounting plate and the lifting cylinder.
[Brief description of the drawings]
FIG. 1 is a side view of a combine provided with a grain discharging device of the present invention.
FIG. 2A is a side view showing a configuration of the position detecting device, partially cut away. (B) is a rear view of (A).
FIG. 3 is a plan view of FIG. 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Machine stand 3 Threshing part 5 Grain tank 6 Grain discharger 6a Grain auger 7 Rotating mechanism 7a Support post 7b Support case (support frame)
8 Operating lever 9 Position detecting device 9a Contact piece 9T Adjusting screw 52 Support cylinder 60 Lifting cylinder 62 Discharge cylinder 65 Discharge port 70 Mounting base 71 Pinion gear 72 Swivel gear 90 Storage switch 91 Discharge switch 92 Touch piece (storage touch piece)
93 contact piece (discharge contact piece)
95 mounting plate 95a mounting piece 96 auxiliary mounting plate A combine (harvester)

Claims (2)

On one side of the grain tank, with upright drivably turning by the storage catalyst element and pumped tube a drive motor and a discharge tactile piece projecting from the peripheral surface, when pivoting the該揚feed tube, pumped A drive motor is provided by bringing a storage switch and a discharge switch, each of which is a swing contact piece type limit switch provided on a support frame side rotatably supporting a cylinder, into contact with the storage touch piece and the discharge touch piece, respectively. In the harvester, the single-plate-shaped mounting plate is provided on the support frame, and the storage switch and the discharging switch are formed on the mounting plate. A grain discharging device for a harvester, which is separately fixed to upper and lower surfaces of a piece . The switch body of the storage switch is attached and fixed to the mounting plate so that the tip of the contact piece is close to the peripheral surface of the lifting cylinder and the pivot point is away from the lifting cylinder. The grain discharging device for a harvester according to claim 1.

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