JPH0531883Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Industrial application field The present invention has a structure in which a grain tank attached to a combine harvester can be rotated and opened for inspection and repair of the drive device between the grain tank and the threshing device. In this system, an alarm is issued when the grain tank is rotated when it is filled with paddy.

(b) Prior art A technology that allows the grain tank conventionally attached to a combine to be opened and turned in order to enable inspection and repair of the drive section between the grain tank and the threshing device is disclosed in Utility Model Application No. 59-29160. Techniques such as those disclosed in the official gazette are publicly known.

Furthermore, a technique such as Japanese Utility Model Publication No. 56-2852 is known in which a capacity sensor for informing the operator of the amount of paddy input into the grain tank 1 is disposed inside the grain tank.

(c) Problems to be solved by the invention The purpose of the invention is that when the grain tank 1 is rotated for inspection and repair while there is still paddy in the grain tank, the weight of the paddy will be reduced. The pivot portion cannot support it enough, and overload is applied to that part, causing it to bend or crack.

The present invention solves this problem.

(d) Means for solving the problem The purpose of the present invention is as described above. Next, the configuration for achieving the purpose will be explained.

In a configuration in which the grain tank 1 can be rotated and opened with respect to the threshing device D, when the grain tank 1 is rotated with the grain tank 1 filled with paddy, the grain tank 1 is configured to generate an alarm. The capacity sensor 22 of the tank 1 and the grain tank position detection switch 21 are linked.

(E) Embodiment The purpose and structure of the present invention are as described above. Next, the structure and operation of the embodiment shown in the attached drawings will be explained.

Figure 1 is a side view of the combine, Figure 2 is a plan view of the grain tank in a rotated state, Figure 3 is a rear view of the grain tank pivot, Figure 4 is a front sectional view, and Figure 5 is a front view. FIG. 6 is a plan sectional view of the spout 11a portion of the upper part of the grain lifting cylinder 11, and is an electric circuit diagram of the present invention.

The outline of the grain tank will be explained with reference to FIGS. 1 to 4.

An increase tank 2 for increasing the capacity of the grain tank 1 is arranged outside the grain tank 1. Further, a lower auger 4 for collecting paddy is arranged at the lower part of the grain tank 1, and the paddy collected by the lower auger 4 is hoisted by a vertical auger 3, and then transferred to a discharge auger 5. The discharge auger 5 can be rotated vertically by a vertically moving cylinder 6, and can also be freely rotated left and right by a left-right rotating bevel gear 7 provided on the vertical auger 3. The left and right rotating bevel gear 7 is driven by a forward/reverse drive motor M as shown in FIG.
This is a small diameter bevel gear 7a rotated by.

A pivot tube 8 is protruded from the threshing device D, and the vertical auger 3 is rotatably fitted inside the pivot tube 8.
Further, a rotation bearing portion 19 that supports rotation of the grain tank 1 is loosely fitted on the outer periphery of the pivot cylinder 8. Therefore, the pivot tube 8 supports both the rotation of the vertical auger 3 and the discharge auger 5 and the rotation of the grain tank 1.

The lower end of the vertical auger 3 is supported by a bearing on a support auger 3a, and the support auger 3a itself is integrated with the lower auger 4 and rotates with the rotation of the grain tank 1. The support auger 3a has a lower end supported by a thrust bearing 30.

14 is a roller for smoothing the rotation of the grain tank 1 around the vertical auger 3. The rollers 14, 14 rotate on the body frame 15.

Power is also transmitted from the engine output pulley 10 to the auger drive pulley 9 that drives the lower auger 4, and the power is transmitted to the vertical auger 3.
The discharge auger 5 is also driven.

As shown in FIG. 2, FIG. 3, and FIG. 4, the paddy after threshing and sorting is carried out from the first conveyor 13 of the threshing device D, transferred to the hoisting tube 11, and transferred to the upper part of the grain tank 1 at the top of the spout 11a. This is something that will be invested more.

As described above, the present invention enables the front part to rotate outward while being pivotally supported by the vertical auger 3, and in the rotated state, the threshing device D
In a configuration that allows for inspection and repair of the drive unit such as the V-belt located between the grain tank 1 and the grain tank 1, an alarm/lock mechanism is arranged to prevent rotation of the grain tank 1 when paddy remains inside. It is something.

Let me explain about Figures 5 and 6.

The spout 11a at the upper end of the grain lifting cylinder 11 and the side wall of the grain tank 1 are not fixed with bolts or the like, and when the grain tank 1 is in the stored state, they are in abutting state. It is designed to be sealed tightly. By sealing in this contact state, when the grain tank 1 is rotated or stored,
This eliminates the need to attach and detach bolts for fixing to the spout 11a on the back side of the grain tank 1 each time. In order to prevent the leakage of paddy in this contact state, an elastic seal 23 is interposed.

Further, a grain tank position detection switch 21 is arranged on the side of the spout 11a, and the grain tank position detection switch 21 is OFF when the grain tank 1 is in the normal position. It is a switch that turns on when you rotate it and move away from it.

As shown in FIG. 4, capacity sensors 22c and 2
2b and 22a are arranged. The paddy level display lamps 29c, 29b, 29a are lit at the positions of the capacity sensors 22c, 22b, 22a so that the operator can recognize the filling state in the grain tank 1.

The present invention provides the capacitive sensors 22c, 22b, 22
The lowermost capacitance sensor 22a in a is used not only as a sensor for level display but also as a sensor that makes it impossible to rotate when filled with paddy.

However, the capacity sensor 22 lights up the level display lamp 29 only when the starter key 28 of the combine is turned on and the engine is rotating and reaping work is being carried out.
It does not operate when it is OFF.

Conversely, when rotating the grain tank 1 for inspection and repair, it is dangerous if the engine is rotating, and the engine will stop, so the capacity sensor 22
a will no longer work.

In order to improve this point, in the present invention, the capacitive sensor 22a is used as an interlocking switch, and the other capacitive sensor 22a is arranged in a circuit that does not include the starter key 28.

The capacitive sensor 22a, the aforementioned grain tank position detection switch 21, the alarm device 25, and the lock solenoid 27 are arranged in series. Since these circuits do not include the starter key 28, they will operate even if the engine is stopped as long as the battery is charged.

With this configuration, the capacitive sensor 22a
is turned on depending on the filling state of paddy, and in this state,
Roller 1 when trying to rotate Glen Tank 1
4 and 14 on the fuselage frame 15, the grain tank position detection switch 21 is turned ON, the alarm device 25 issues an alarm, and the lock solenoid 27 is activated to prevent further rotation of the grain tank 1. It has a locking effect.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

That is, when the grain tank 1 is filled with paddy and the operator attempts to rotate the grain tank 1 without knowing this, the capacity sensor 22a and the grain tank position detection switch 21 work together to prevent the operator from turning the grain tank 1. The alarm device 25 sounds and the lock solenoid 27 is engaged.

In this state, the grain tank 1 is still in a state where the rollers 14, 14 are on the machine frame 15, so the weight of the paddy is received by the rollers 14, 14 and the machine frame 15, and the weight of the paddy and the grain tank 1 is It does not all depend on the central branch. Therefore, the rotation operation of the grain tank 1 can be stopped before the pivot part is destroyed, and deformation and damage to the pivot part and the tank can be prevented.

[Brief explanation of the drawing]

Figure 1 is a side view of the combine, Figure 2 is a plan view of the grain tank in a rotated state, Figure 3 is a rear view of the grain tank pivot, Figure 4 is a front sectional view, and Figure 5 is a front view. FIG. 6, which is a plan sectional view of the spout 11a portion of the grain lifting cylinder 11, is an electric circuit diagram of the present invention. 1...Glen tank, 3...Vertical auger, 3
a... Support auger, 5... Discharge auger, 21
... Glen tank position detection switch, 22 ... Capacity sensor, 25 ... Alarm device, 27 ... Lock solenoid.

Claims (1)

[Scope of utility model registration request] In a configuration in which the grain tank 1 can be rotated and opened with respect to the threshing device D, when the grain tank 1 is rotated with the grain tank 1 filled with paddy, the grain tank 1 is configured to generate an alarm. A rotatable grain tank structure characterized in that a capacity sensor 22 of a tank 1 and a grain tank position detection switch 21 are linked.