JPS6338753Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a threshing machine with a grain tank such as a combine harvester or a harvester, and more specifically, a threshing device and a grain tank are mounted on the machine body and communicated with the first product outlet of the threshing device. The lower part of the screw-type grain lifting device is communicated with the outlet of the grain tank via a first opening/closing shutter, the upper part of the grain lifting device is communicated with the upper inlet of the grain tank via a second opening/closing shutter, and the This invention relates to a threshing machine with a grain tank, in which the upper part of the grain lifting device is connected to a horizontal feed structure.

In this type of grain tank-equipped threshing machine, by switching the opening and closing of both shutters, one grain lifting device can be used both when supplying grain from the threshing device to the grain tank and when transporting grain from the grain tank. It has been known in the past that there is no need to provide a separate vertical screw transport device for unloading, and that the weight of the machine can be reduced accordingly.

It is also conventionally known to provide a delivery device at the bottom of the grain tank in order to smoothly send grains from the grain tank to the grain lifting device.

However, if the feeding device is provided at the bottom of the grain tank in a structure in which the grain lifting device is switched between the two directions as described above by switching the shutter, the feeding device is activated when the shutter is not switched to the unloading state. The disadvantage is that the grains that are about to be sent out are strongly compressed and damaged at the outlet of the tank.

The present invention was developed in view of the above-mentioned circumstances, and is a threshing machine equipped with a grain tank that prevents the grains sent by the delivery device from pressing the tank outlet when switching to the state where grains are taken out from the grain tank. The purpose is to provide machines.

In the grain tank-equipped thresher according to the present invention, in the above-mentioned one, at the bottom of the grain tank,
A feeding device for feeding grains toward the outlet is disposed, and a tank supplying posture is provided in which the first opening/closing shutter is closed and the second shutter is opened, and the first opening/closing shutter is opened and the second shutter is in the tank feeding position.
An opening/closing operation device for opening and closing both shutters in a reverse manner is provided in the unloading position with the opening/closing shutter closed; A characteristic configuration is that the delivery device is linked so that it is driven after the device is switched to the delivery position.

That is, the operating tool of the opening/closing operating device is linked to the driving operation of the feeding device so that the feeding device is driven after the opening/closing operating device switches to the ejection posture. Only after operating the operating tool of the opening/closing operation device and switching to the transporting position for transporting grains from the grain tank, that is, the state in which the exit of the grain tank and the grain lifting equipment are communicated, will the transporting device be driven. Therefore, the grains are carried out without being pressed against the outlet, and the opening/closing operation device and the drive operation device of the feeding device can be driven and operated simply by operating the operation tool. I was able to play it.

Next, embodiments of the present invention will be described.

This embodiment will be explained using a combine harvester as an example, and the configurations of the reaping device 1, threshing device 2, grain tank 3, unloader 4, engine 5, traveling body 6, etc. are the same as those conventionally known, so detailed explanation will be omitted. .

Between the grain tank 3 and the threshing device 2,
A screw-type grain lifting device 7 is installed upright, and the lower part of its outer peripheral case 8 has an outlet 9 of the threshing device 2 on one side and an outlet 10 of the grain tank 3 on the other side.
are fitted into first cylindrical brackets 11 formed therein. Openings 12 and 13 are formed in the lower part of the outer case 8 at positions facing the outlets 9 and 10, respectively, and between the lower part of the outer case 8 and the first cylindrical bracket 11, A cylindrical first opening/closing shutter 15 in which one through hole 14 is formed is interposed so as to be relatively rotatable.

As shown in part A in FIG.
4 is always urged to face the outlet 9 most, and by pulling the first release wire 17, the through hole 14 opposes the urging force of the spring 16, and the through hole 14 faces the outlet 10 of the grain tank 3. The stopper 18 prevents further rotation.

Further, the upper part of the outer circumferential case 8 has a cylindrical second part formed on one side of the inlet 19 of the grain tank 3.
An opening 21 is formed inside the bracket 20 at a location facing the inlet 20.

Then, the upper part of the outer peripheral case 8 and this second
A cylindrical second opening/closing shutter 23 with a through hole 22 formed on one side is rotatably interposed between the bracket 20 and the shutter 23, as shown in FIG. the through hole 22 is biased to a position not facing the inlet 19;
By pulling the second release wire 25, the through hole 22 is rotated to a position facing the inlet 19, and a stopper 26 prevents further rotation.

The upper end of the grain lifting device 7 is communicated with the starting end of the unloader 4.

Further, the lower end of the screw shaft 27 of the grain lifting device 7 is interlocked with the first feeding screw shaft 28, and the upper end is connected to the screw shaft 29 of the unloader 4.
is linked to.

A feed screw shaft 30 is provided at the bottom of the grain tank 3 as a feed device for feeding grains toward the outlet 10, and this screw shaft 30 is connected to the threshing device 2 through an input shaft 31 and a belt tension clutch 32. It is interlocked and connected to the handle shaft 33 of.

The clutch pulley 34 of the belt tension clutch 32 is forcibly swung toward the entry side by pulling the third release wire 35, as shown in part C in FIG.

Next, the opening/closing operation device 36 of the opening/closing shutters 15, 23 will be explained. (See Fig. 4) As shown in part d in Fig. 4, the operating lever is an operating tool that can be moved within a square-shaped first guide groove 40 with a lateral movement path 40a in the center. 37, the other ends of the first, second, and third release wires 17, 25, and 35 are connected to each other by the following configuration.

The first guide plate 3 in which the first guide groove 40 is formed
A second guide plate 41 is attached to the second guide plate 41 so as to be slidable in the horizontal direction with respect to the second guide plate 8, and a linear second guide groove 42 is formed in the second guide plate 41 in the vertical direction. The other ends of the first and second release wires 17, 25 are connected to this second guide plate 41, and by the lateral swinging of the lever 37 in the lateral movement path 40a, both shutters 15, 23 are is configured to be switched between a tank supply attitude and an unloading attitude.

The other end of the third release wire 35 is connected to an operating member 82 in which a long hole 39 is formed.
A pin 83 protruding from the operating lever 37 is engaged in the long hole 39, and when the lever 37 swings in the vertical direction in the tank supply position, the third release wire I made sure not to subtract 35.

Then, when the lever 37 swings in the vertical direction in the unloading position, the third release wire 35
is pulled to forcibly swing the tension pulley 34 toward the entry side. In this way, the drive/non-drive operating device 43 is assembled.

Second Embodiment (See FIG. 5) In the first embodiment, hydraulic actuators 51, 52, 53 are used to open and close the opening/closing shutters 15, 23 and to engage/disengage the tension clutch 32 to the feed screw shaft 28. The operating devices 36 and 43 in this structure will be explained.

Forming gears 54 and 55 between the opening and closing positions of the opening and closing shutters 15 and 23, respectively,
Gears 56 and 57 that mesh with these gears 54 and 55
A first forward/reverse hydraulic motor 51 and a second forward/reverse hydraulic motor 52 which are pivotally supported are fixed to the first bracket 11 and the second bracket 20, respectively. and a clutch pulley 34 of the tension clutch 32.
is turned on and off by the hydraulic jack 53 so that it is in the engaged state when the hydraulic jack 53 is extended, and is in the off state when it is contracted.

The hydraulic motors 51 and 52 and the hydraulic cylinder 53 can be rotated in forward and reverse directions and extended and contracted by switching a switching valve 58.

The switching valve 58 has a first valve that communicates the hydraulic motors 51 and 52, the hydraulic jack 53, and the hydraulic pumps 59 and 60 in the first position as follows.
Through fourth spool portions 61, 62, 63, and 64 are provided.

The first spool portion 61 communicates the pump 59 with the forward rotation oil feed path 71 of both the hydraulic motors 51 and 52. The second spool portion 62 is a relief oil path from a first relief valve 69 (released due to high load when both hydraulic motors 51, 52 reach their normal rotation limit) provided in the forward rotation oil feed path 71. 70 is an oil feed path 7 for extending the hydraulic jack 53.
It is connected to 2.

The third and fourth spool portions 63, 64 connect the reverse oil supply passage 73 of the hydraulic motors 51, 52 and the reduction oil supply passage 74 of the hydraulic jack 53 to the oil tank 6.
It is connected to 0.

Further, the switching valve 58 has the following fifth to eighth spool portions 65, 6 in the second position.
6, 67, and 68 are provided.

The fifth spool portion 65 communicates the pump 59 and the reduction oil feed path 74.

The sixth spool portion 66 is connected to the oil supply path 74 for reduction.
The relief oil passage 76 of the second relief valve 75 (which provides relief under high load when the hydraulic jack reaches its contraction limit) is connected to the reversal oil passage 73.
It is connected to.

The seventh and eighth spool parts 67 and 68 connect the normal rotation oil passage 71 and the extension oil passage 72 to the oil tank 60, respectively.
It is connected to.

As described above, in the first position of the switching valve 58, both hydraulic motors 51 and 52 are first rotated in the normal direction, and the shutters 15 and 23 are switched to the unloading position, and this switching operation is completed when both hydraulic motors 5
When the forward rotation limit of 1,52 is reached, the hydraulic jack 53 is extended to rotate the feed screw shaft 28.

Further, in the second posture, the hydraulic jack 5
3 to stop the drive of the feed screw shaft 28, and then this hydraulic jack 5
3 reaches the reduction limit, both hydraulic motors 51,
52 is reversed to switch the shutters 15, 23 to the tank supply position.

Note that a neutral position may be provided between the first and second positions to reduce the load on the pump 59 in a stable state until mutual switching between the carry-out driving state and the tank supply non-driving state is required.

Further, as shown in FIG. 6, the hydraulic jack 53
Forward and reverse electromagnetic switching valves 77 and 78 are provided between the hydraulic motors 51 and 52 and the pump 59, respectively, and when the switching switch 79 to the forward rotation side is turned on, the switching valve 77 for the motor is switched to the forward rotation side. switching, the time delay after normal rotation of the hydraulic motors 51 and 52 until they reach the normal rotation limit, and the valve 78 of the hydraulic jack 53.
A first delay circuit 80 for switching to the forward flow side is provided in the forward flow side switching electric circuit of the valve 78 for the hydraulic jack 53, and after the hydraulic jack valve 78 switches to the reverse flow side when the reverse side changeover switch 81 is turned on, A second delay circuit 82 is provided in the electric circuit on the reverse side to provide a time delay until the hydraulic jack 53 reaches its reduction limit and to switch the hydraulic motor valve 77 to the reverse side.

Both the switches 79 and 81 are selection switches.

In the embodiments described above, it is also within the technical scope of the present invention to change the configuration and object by one or more of the following combinations.

Instead of the unloader, the duct-like guide flow structure is a lateral feed structure.

Another through hole is formed in the first opening/closing shutter 15 so as to always face the first outlet 9 even when the outlet 10 of the grain tank 3 is opened or closed.

The feeding device 30 is not limited to a screw shaft, but may be a conveyor-like device.

A communication hole with the unloader 4 is formed in the second bracket 20, an opening opposite to this is formed in the outer peripheral case 8, and the grain tank inlet 19 and this communication hole are integrally connected by the second opening/closing shutter 23. It should open and close.

This example is applied to a grain tank supply and carry-out structure in a harvester.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the grain tank-equipped threshing machine according to the present invention, in which Fig. 1 is a plan view showing the entire combine harvester, Fig. 2 is a longitudinal cross-sectional rear view showing the main parts, and Fig. 3 is a longitudinal cross-section showing the main parts. The side view, FIG. 4, is a drawing showing the operating device, in which the A part shows the transverse plane of the first opening/closing shutter, the B part shows the transverse plane of the second opening/closing shutter, and the C part shows the transverse plane of the clutch. The side view is shown, and the second part shows a perspective view of the operating lever. FIG. 5 is a hydraulic circuit diagram showing the second embodiment;
FIG. 6 is a hydraulic electrical circuit diagram showing a modification of the second embodiment. 2... Threshing device, 3... Glen tank, 6...
Aircraft, 7... Grain frying device, 9... Ichibanmono exit, 10
...Glen tank exit, 4...Side feed structure,
19... Glen tank inlet, 30... Delivery device, 15... First opening/closing shutter, 23... Second
Opening/closing shutter, 36... Opening/closing operating device, 32...
... Drive operating device, 37... Operating tool.

Claims (1)

[Claims for Utility Model Registration] 1. A threshing device 2 and a grain tank 3 are mounted on a machine body 6, and a lower part of a screw-type grain lifting device 7, which is connected to a first product outlet 9 of the threshing device 2, is opened and closed in a first opening/closing manner. The grain tank 3 via the shutter 15
The upper part of the grain lifting device 7 is connected to the upper inlet 19 of the grain tank 3 via the second opening/closing shutter 23, and the upper part of the grain lifting device 7 is connected to the lateral feed structure 4. In a grain tank-equipped threshing machine, a feeding device 30 for feeding grains toward the outlet 10 is disposed at the bottom of the grain tank 3, and the first opening/closing shutter 15 is closed and the second shutter 23 is opened. An opening/closing operation device 36 for opening and closing both the shutters 15 and 23 in a contradictory manner is provided in the open tank supply position and the unloading position in which the first opening/closing shutter 15 is opened and the second opening/closing shutter 23 is closed, Furthermore, the operating tool 37 of the opening/closing operating device 36 is connected to the drive operating device 32 of the feeding device 30 so that the feeding device 30 is driven after the opening/closing operating device 36 is switched to the unloading position. A threshing machine with a grain tank characterized by being linked together. 2. The power is turned on and off to the shutters 15, 23 and the delivery device 30 by a hydraulic actuator, and both the operating devices 36, 43 are constituted by hydraulic switching valves. Threshing machine with grain tank.