JPS5851723Y2 - Grain overflow prevention device in grain tank - Google Patents

Description

[Detailed description of the invention] Conventionally, a fixed tank body higher than the height of the threshing device was provided on the side of the threshing device, the upper part of the tank body was extended above the threshing device, and this extension part was made to be tiltable up and down. Kaisho 50-1209
This is already known from Publication No. 31.

However, in the known method, if the grain lifting cylinder is installed outside the grain tank, it is difficult to fill the part extending above the threshing device with grains, so there is no other option but to install it upright inside the tank main body. The internal volume of the tank has become significantly smaller.

Therefore, in order to improve the above-mentioned drawbacks, the upper part of the grain lifting cylinder is made to face from the lower part into the tank part extending above the thresher, and the part facing the tank part is divided and attached to the tank part, and the tank part is When tilting up and down, the divided upper part is configured to move up and down integrally with the tank part, making it easy to fill every corner with grains even though the grain tank is large in the horizontal direction. The entire interior of the grain tank can be used as a grain filling space, and the storage capacity can be significantly increased.

However, when the tank section was tilted upward, a new drawback occurred in that the grains being fried flowed out of the machine from the upper end of the grain-lifting tube which was in an open state.

This invention allows grains to be easily filled into a grain tank that spreads widely in the horizontal direction, but when the tank section is tilted upward, the threshing device must stop and the grains can be removed from the grain lifting cylinder. It is an object of the present invention to provide a grain overflow prevention device in a grain tank that prevents grain from flowing out.

The embodiments shown in the drawings will be explained in more detail below.
Reference numeral 1 denotes a threshing device mounted on the upper side of a machine 3 having a traveling device 2, and an operation panel 4 and a driver's seat 5 are provided in front of the threshing device on the other side of the machine 3, A paddy receiving floor 6 and an engine 7 are installed at a portion approximately equal to the front and rear width of the threshing device 1.
This is the provision.

Further, a pre-processing section 8 consisting of a reaping section 8a and a conveying section 8b is attached to the front of the threshing device 1 so as to be movable up and down, and a cutter 9 is attached at the rear.

The grain tank 10 covers the entire upper surface of the threshing device 1 on one side of the machine stand 3, and protrudes over the paddy receiving blower 6 on the other side, and is interposed between the grain tank 10 and the side wall of the threshing device 1. It hangs down so as to surround the other side of the threshing device 1 with a gap between the threshing device 11 and the threshing device 1, and is divided into two by the same substantially horizontal plane as the top surface of the threshing device 1, and has a flat shape when viewed from the front and back direction above. The part is the tank part 10a, and the hanging part below it is the paddy storage part 10a.
b, and the paddy storage section 10b is configured as a paddy stuffing hopper having four discharge funnels 10' in the front, back, left, and right at its lower part. 1 side wall, support rod 12.12 and mounting bracket 13.13
The horizontal frame 14 installed between the mounting brackets 13 and 13 has an ejection rod 16 for hanging the paddy bags 15.
...is a protruding part.

Further, the lower part of the other end of the flat tank part 10a is rotatably connected to the outer upper part of the paddy storage part 10b by a fulcrum shaft 17, and the threshing device 1 is connected from the paddy storage part 10b of the tank part 10a. The lower surface of the side has a bottom plate 10a', and the bottom plate 1
The side edge of the paddy storage section 10b of 0a' and the front and rear sides extending from both front and rear ends to the pivot portion have a U-shaped horizontal cross section, and when the tank section 10a is ascended, the paddy storage section 10b A plate-shaped downstream guide body 18 that covers the peripheral edge is provided vertically, and this downstream guide body 18 may be made of a flexible material 19 such as a sheet, in which case its lower edge is connected to the paddy storage section 10b. Attach to the outer periphery of the holder by folding it inward.

Furthermore, a vertical rod 20 that moves up and down within the gap between the threshing device 1 and the paddy storage section 10b is connected to a lift arm 20' protruding from the lower surface in front of the grain lifting cylinder 11 of the tank section 10a. A hydraulic cylinder 2 is located between the link 22 connected to the rod 20 and the support 21 erected on the machine base 3.
It is connected to 3.

The upper part of the grain lifting cylinder 11 faces into the tank part 0a, and is divided into upper and lower parts at the bottom plate 10a', and the internal spiral shaft 11a is also divided at approximately the same height. The upper end of the lower divided part is supported by a bearing 11C and is formed into a protruding part with a projection 24, and the lower part of the upper divided part is connected to the protruded part with pins and has a notch 25 that engages with the protrusion 24. It is formed.

In addition, a tank portion 10 a above the divided portion of the grain lifting cylinder 11
There is a discharge port 26 in the upper part of the holding cylinder 11b fixed to the
A supporting cylinder 26b of the ejector 26 having a shaft 11a is rotatably fitted in the support cylinder 26b of the ejector 26, and a spring blade 26C is attached to the upper part of the helical shaft 11a rotatably supported on the top plate of the helical shaft 11a via a bearing. is fixed.

Furthermore, a belt 30 is attached to the pulley 27 integrally formed at the lower end of the support cylinder 26b and the pulley of the motor 29 attached to the receiving plate 28 connected to the tank portion 10a.
(3) Three inner and outer control protrusions 31.3 centering on the helical shaft 11a provided on the lower surface of the pulley 27.
1' and 3'' are limit switches 32 mounted on the receiving plate 32a, which is integrated with the holding cylinder 11b, respectively.
．． 32', 32'', and a pressure-sensitive detection switch 33 inserted into the control circuit including these limit switches 32, 32', 32'' is attached to the lower edge of the discharge port 26a. It is.

If this detection switch 33 is installed obliquely upward, the detection function will be improved.

Note that 34 is the support tube 26b of the ejector 26 and the grain lifting tube 11.
This is a cover tube that covers a portion inside the tank portion 10a.

In the above-mentioned apparatus, the grains fried by the grain lifting cylinder 11 of the threshing device 1 are thrown into the tank portion 10a from the discharge port 26a of the discharger 26.

Next, to explain the filling and discharging of paddy into the grain tank 10, at the start of work, the discharge port 26a of the discharger 26 is directed upward to the discharge funnel 10' on the rear side of the paddy storing section 10b, and when the control switch is turned on, The safety switch 35' is turned OFF when the work equipment clutch lever 35 is in the engaged position shown by the solid line in Fig. 7, and only the limit switch 32' is turned ON, while the other 32.32'' is turned ON.
is OFF, detection switch 33 is OFF, discharge funnel 10'
The sensor switch 36, which is attached to the inner surface of the upper part of the outer wall of the cell and turns off when pressure is sensed, is turned on because the paddy storage section 10b is empty.
It becomes.

When reaping and threshing work is performed in this state, the grains are fried from the grain lifting cylinder 11 and thrown into the rear outer discharge funnel 10' by the discharger 26, and since the shutter 37' is open, the grains are dumped into the paddy bag 15 below. filled and then discharged funnel 10 above it
When ' is full, the discharge funnel 10' inside it is filled, the detection switch 36 is turned off, and when the grain tank part 10a is also filled, grains are finally deposited in front of the detection switch 33. Then it turns ON.

Then, the motor 29 rotates to rotate the emitter 26.

With this rotation, the control ridges 31, 31'. Since the limit switches 31 and 31 rotate integrally with the pulley 27, the limit switches 32 and 32 are turned on, and the detection switch 33 is turned on.
Even if the motor 29 faces the direction with no grains and is turned OFF, the motor 29 rotates until the outer limit switch 32 enters the notch of the control protrusion 31 that limits the rotation angle, and the limit switch 32 closes the control protrusion 31. When it enters the notch and is turned off, the motor 29 stops and the discharger 26 throws the grains into the front discharge funnel 10'.

Thereafter, each time the detection switch 33 detects grains, the discharge body 26 rotates by a certain angle to fill the entire tank portion 10a with grains.

When the tank portion 10a becomes full in this way, the end of the intermediate control protrusion 31' is located in front of the other control protrusions, so the limit switch 32' is turned off and the circuit leading to the alarm 37 is closed. An alarm will be issued for a certain period of time.

Therefore, the paddy bag 15 is replaced and the paddy storage section 10b is set in a state where the grains can be stored (the paddy bag may be partially filled), and when the grains no longer come into contact with the sensing switch 36, it is turned ON.
As a result, the coil of the relay 39 is excited and switched, so the motor 29 rotates in the opposite direction, and the emitter 26
is the reverse rotation control protrusion 31, 31', 31 to the initial position.
“Return to original position.

After (or before) the above-mentioned bag exchange is completed, the work equipment clutch lever 35 is tilted to the off position to turn on the safety switch 35', and then the lift lever 38 is tilted to the up position, the lift switch 38a is turned on. is turned on, the solenoid 40 is energized, the spool slides, and the hydraulic cylinder 2
3, the middle part of the tank part 10a is pushed up, the tank part 10a tilts around the fulcrum shaft 17, and the grains in the tank part 10a are transferred to the paddy storage part 10.
flows into b.

Furthermore, even if the grains flowing in from the tank part 10a cannot be fully stored in the paddy storage part 10b and the grains are accumulated on the sensing switch 36 and the sensing switch 36 is not turned on,
The lift lever 38 is tilted to the raised position and the lift switch 38a is turned on.

The lift switch 38a is a two-stage switch, and the coil of the loop 39 is energized, and the relay 39 is switched, so the motor 29 rotates in the opposite direction and the ejector 26 also rotates in the opposite direction.

In addition, if the machine is turned before the grains are full in the tank part 0a, the grains will move to the back of the tank part 10a due to the vibration and inertia of the machine, and the grains will be leveled. The detection switch 3 of the emitter 26 is
3 is turned OFF, and the sensing switch 36 no longer detects grains and turned ON, the relay 39 is switched and the motor 29 rotates in the reverse direction, and the ejector 26 has its discharge port 26a connected to the rear discharge funnel 10'. Return to facing position and turn.

Note that the pressure-sensitive switch 36 can be omitted if the ejector 26 is reversely rotated only when the tank portion 10a is lifted up.

Alternatively, the paddy storage section may be constituted by a tank provided on the machine stand 3, and a discharge spiral may be provided at the bottom of the tank, and a lifting discharge tube may be connected to the transfer end of the tank.

Furthermore, when tilting the tank portion 10a upward, when the lift lever 38 that operates the hydraulic cylinder 23 is tilted to the raised position, the work equipment clutch lever 35 is tilted to the cut side in conjunction with the lift lever 38, so that the work equipment clutch is disengaged. It may also be configured such that the working machine clutch is disengaged due to the upward tilting of the tank portion 10a by linking or using other methods.

As described above, the present invention comprises a grain tank consisting of a grain storage part and a tank part that communicates with the upper part of the grain storage part and which tilts up and down, and a grain lifting cylinder is inserted into the tank from the bottom of the tank part, The upper part is divided into upper and lower parts near the bottom of the tank, and the upper part is attached to the tank part, and a working machine clutch is connected to the tank part's elevating device and the threshing device only when the clutch is disengaged. Since the tank parts are connected so that they can tilt up and down, it is possible to easily fill grains to every corner of the grain tank, which is wide spread horizontally, and the entire grain tank can be used effectively. The threshing device is always stopped when the tank part is tilted upward, and it is possible to accurately prevent grains from being pushed up and overflowing from the upper end opening of the grain lifting cylinder.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the combine harvester, Fig. 2 is a plan view of the same, Fig. 3 is a side view of the main parts, and Fig. 4 is a partial cross-section of the same. Rear view showing 5th
Figure a is a sectional view of the upper part of the grain lifting cylinder, the same figure is a plan view of the same, Figure 6 a is a control circuit diagram, and the same figure is a hydraulic circuit diagram. 1... Threshing device, 11... Grain lifting cylinder, 1
0... Grain tank, 10a... Tank section, 10b... Paddy storage section, 17... Fulcrum shaft, 23... Hydraulic pressure Cylinder, 20...
...Rod, 26...Emitter, 35...
・Work equipment clutch lever 38...Lift lever

Claims (1)

[Scope of utility model registration request] The grain tank is composed of a paddy storage part and a tank part which communicates with the upper part of the tank part and which tilts up and down. The upper part is divided into upper and lower parts, and the upper part is attached to the tank part, and a working machine clutch is used to connect and disconnect power to the lifting device of the tank part and the threshing device, so that the tank part tilts up and down only when the clutch is disengaged. A grain overflow prevention device in a grain tank, characterized in that the device is connected to a grain tank.