JPH0229873Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, a grain discharging device that horizontally transfers grains in a grain tank using a transfer spiral and then lifts and discharges the grains with a grain lifting device is used as a grain lifting device when the operation is interrupted. If the transfer spiral is started at the same time as the grain lifting device with grain remaining in the grain lifting device, clogging may occur in the grain lifting device, and if the transferring spiral is continued to be driven with the grain lifting device clogged, the clogging may occur. It gets even worse.

In such a case, if the clutch of the transfer spiral is manually disengaged, it will be too late for the operator to discover the clogging, and it will not be possible to prevent the clogging.

The purpose of the present invention is to improve the above-mentioned drawbacks, and the present invention aims to improve the above-mentioned drawbacks. In a grain tank configured to be discharged by a discharge device, a clutch operating lever is provided which is biased back while intermittent driving power of the grain discharge device, and the clutch operating lever is disposed near the entry position of the operating path of the clutch operating lever. A locking device that moves forward and backward into the path is provided oppositely, a normal rotation speed switch that detects the normal rotation speed is attached to the engine, and the normal rotation speed switch is connected to the locking device, and the normal rotation speed switch detects the normal rotation speed. If it detects that the clutch operating lever is in the disengaged position or the clutch operating lever is in the engaged position and the normal rotational speed switch detects that the normal rotational speed is below the normal rotational speed, the locking device withdraws. Either the clutch operating lever is in the engaged position and the normal rotational speed switch detects that the normal rotational speed is the normal rotational speed, or the clutch operating lever is in the disengaged position and the normal rotational speed switch detects that the normal rotational speed is below the normal rotational speed. The device is characterized in that the locking device is connected in such a way that the locking device advances when the

The embodiment shown in the drawings will be explained below.1
is a threshing device mounted on one side of a machine base 3 having a traveling device 2, and a reaping device 4 is mounted in front of it.
A preprocessing device 5 consisting of a and a grain culm conveying device is mounted so as to be able to be raised and lowered, and on the other side of the machine base 3, an operation panel 6, a pilot seat 7, a grain tank 8, and an engine 9 are installed in order from the front. There is.

Further, at the lower part of the V-shaped bottom plate of the grain tank 8, there is a lateral transfer spiral 1 consisting of a cylinder shaft 10a and a spiral.
0, a thrower-type grain frying device 11 is attached to its discharge part, and a shaft 12a of a jumping rotary body 12 is installed.
is loosely fitted into the cylindrical shaft 10a, and the grain lifting device 11
The grain lifting cylinder 13 is a main cylinder 13 installed upright on the casing.
a and an auxiliary cylinder 13b screwed onto the upper end of the auxiliary cylinder 13b so as to be able to rise and fall freely.
The main cylinder 13a is tilted left and right by a cylinder 17 that expands and contracts by a motor 16 attached to the fuselage.

Further, the cylindrical shaft 10a of the lateral transfer spiral 10 and the shaft 12a of the jumping rotating body 12 are driven separately as shown in FIG.
A clutch pulley 21 is attached to the belt 19 that is hung on the shaft 12a, and a clutch pulley 21 is attached to the belt 19, which connects and disconnects with an operating wire 20 to connect and disconnect the power. , an operating wire 28 is attached to the belt 27a that is hung on the small pulley 26 and the pulley 27 of the cylinder shaft 10a.
A clutch pulley 29 is attached for intermittent power supply.

As shown in FIG. 6a, levers such as a throttle lever 31 and a clutch operating lever 32 are provided on the lever guide plate 30 provided between the pilot seat 7 and the grain culm conveying device. The guide groove 32b of the lever 32 is as shown in FIG. 6c.
The clutch operating lever 32 is formed in a series by connecting the front and rear grooves offset to the left and right with a horizontal groove, and the clutch operating lever 32 is supported by a pin in a rotatable front-rear direction shaft 32a so as to be tilted back and forth. The gear case 18
The operating wire 20 that operates the clutch pulley 21 on the input side is connected to a grain-lifting clutch arm 34 rotatably supported by a fulcrum shaft 33, and the end of the grain-lifting clutch arm 34 is connected to the threshing device 1 side. The bent portion is provided with a recess into which the clutch operating lever 32 engages, a grain frying clutch S4 is provided at the engaged position of the grain frying clutch arm 34, and a transfer clutch engageable position at the front end of the guide groove 32a is provided. A transfer switch S5 is provided.

Further, the operating wire 28 for operating the clutch pulley 29 on the lower side of the gear case 18 is connected to the lower end of the transfer clutch arm 35, and the upper part of the transfer clutch arm 35 is also provided with a recess into which the clutch operating lever 32 engages. A shutter 36 provided on the discharge side of the transfer spiral 10 is connected by a rod 38 to an arm 37 integrally projecting from the shaft 32b.

Further, an opening/closing lid 39 is provided near the base of the main cylinder 13a of the grain lifting device 13 and is urged to close by a bullet, and the opening/closing lid 39 is opened on the outside when grains become clogged or when wind pressure increases due to the clog. A clogging detection switch S1 that is turned on when the engine 9 is turned on is provided, and an upright switch S2 is provided at the upper end of the main cylinder 13a to detect when the sub cylinder 13b is connected to the main cylinder 13a. A normal rotation detection switch S3 is provided, which turns ON when the throttle arm 40 comes into contact with the engine, and turns OFF when the throttle arm 40 separates from the engine at low speed rotation.

In the above-mentioned device, when the grain tank 8 becomes full by performing the reaping and threshing work, the machine is pulled over to a truck parked on the road, and the motor 14 is started by operating the switch to start the sub-tube 13b. When the grain lifting cylinders 13 are assembled in series, the motor 1 is turned on.
4 stops, the motor 16 starts and the grain lifting cylinder 13
tilts towards the truck. Therefore, when the clutch operating lever 32 is tilted from the A position to the B position as shown in FIG.
turns on.

At this time, the operating wire 20 passes over the fulcrum shaft 33 from above to below, so the clutch arm 3
4 is stopped at the entry position.

Next, the clutch operation lever 32 is moved to the grain lifting device 1.
When the clutch operating lever 32 is tilted to the side C position, the shutter 36 opens and the clutch operating lever 32 engages with the recess of the transfer clutch arm 35. When the clutch operating lever 32 is tilted to the front position C, the transfer clutch arm 35 is moved to the operating wire 28. is pulled to press the clutch pulley 29 against the belt 15, so the transfer spiral 10 rotates, and at the same time the transfer switch S
5 is turned on.

An electromagnet 41 is provided on the lever guide plate 30 corresponding to the front part of the guide groove 32a, and a stopper 42, which is a locking device fixed to the iron core 41a of the electromagnet 41, locks the spring 4 during demagnetization.
3 and advances into the guide groove 32a, but when the clutch operation lever 32 is turned from A to B at the start of grain frying, the jumping rotary body 12 is activated, and in the control circuit diagram shown in FIG. 11, the grain frying switch S4 is activated. is ON, clogging detection switch S1 is OFF because there is no clogging, standing switch S2 is ON, normal rotation detection switch S3
is ON when the engine 9 is at the normal rotation speed, and the transfer switch S5 is OFF (hereinafter, each switch is indicated only by a symbol), so the electromagnet 41 is energized and the stopper 42 is withdrawn, and the clutch is not operated. The lever 32 can be placed in the d position.
(However, if the engine 9 does not reach the normal rotation speed, S3 is turned off and the stopper 42 is moved in, so it cannot be operated.)
At this time, when the clutch operating lever 32 enters the N position, S5 is turned on and the electromagnet 41 is no longer energized, and the stopper 42 moves in and receives the clutch operating lever 32, so that the swing arm of the clutch pulley 29 is pulled toward the cut side by a spring 44, and the clutch operation lever 3
2 is biased back but maintains the entering position,
In this state, the grains in the grain tank 8 are carried out by the lateral transfer spiral, and the grain lifting device 13 lifts them up and loads them onto the loading platform of the truck.

If the transfer tube 13 becomes clogged during such grain transfer and discharge and S1 is turned ON, the electromagnet 41 is energized and the stopper 42 moves out against the spring 43, so that the clutch operating lever 32 is moved to the transfer clutch arm 35. At the same time, the transfer spiral 10 automatically moves to the C position, which is the cutting position, and the transfer spiral 10 stops.

Further, even if the grain lifting cylinder 13 is not clogged, if the rotation speed of the engine 9 becomes lower than the specified value, S3 is switched and the electromagnet 41 is energized, and the stopper 42 is turned on.
is withdrawn, and the clutch operating lever 32 automatically returns to position C.

Furthermore, even if the transfer spiral 10 is not driven before the sub cylinder 13b of the grain lifting cylinder 13 is connected to the main cylinder 13a, S
Since the stopper 2 is turned off and S5 is also turned off, the stopper 42 remains advanced and cannot be operated to enter, thereby preventing grain leakage.

Furthermore, when the clutch operating lever 32 is tilted into the recess 32b of the guide groove 32a in order to stop the transfer spiral 10 when grain lifting and discharge is interrupted, S5 is turned OFF and the stopper 42 is withdrawn. Therefore, the clutch operation lever 32 cannot be turned off.

Next, another method of the locking device for controlling the operation of the clutch operating lever in the transmission mechanism of the grain discharging device will be explained with reference to FIGS. 12 and 13.
Stopper 4 that engages and disengages from the clutch operating lever 32
2 is provided near the cutting position of the guide groove 32a, and has a bottom portion 42a parallel to the guide groove 32a;
It consists of a receiving part 42b that protrudes from the middle part toward the guide groove 32a, the tip of the receiving part 42b is inclined toward the clutch engaged position, and one end of the bottom part 42a is connected to the iron core of the electromagnet 41. It is pivotally connected by a pin 41a, and the other end is pulled by a spring 43.

Further, a switch S5 is provided at the engaged position to detect that the clutch is engaged and turn OFF, and when the clutch operating lever 32 is pulled toward the disengaged position N, the clutch operating lever 32 comes into contact with the slope of the receiving portion 42b. , and tilt the stopper 42 as shown by the chain line to enter the cutting position.

When the clutch operation lever 32 is engaged and operated from this disengaged position, the rotational speed of the engine 9 is If S3 is turned OFF due to low power, the electromagnet 41 will not be energized, the warning light 44 will be lit, and the stopper 42 will be extended as shown by the solid line, so the clutch operation lever 32 cannot be inserted and operated. , if the engine 9 has reached the normal rotation speed, S
3 is ON, the electromagnet 41 is energized, the stopper 42 moves out, and the clutch operation lever 32
can be turned on and activated.

Furthermore, even if the engine 9 is rotating at the normal speed and S3 is ON, if S2 is OFF, the electromagnet 41 will not be energized and the clutch operating lever 3 will not be energized.
2 cannot be turned on and activated, but S2, S
3 are both ON, and when the clutch operation lever 32 is engaged and operated, S5 is turned OFF, so that power is not wasted.

In addition, although the swallow type grain lifting device was explained in the above embodiment, the present invention can also be applied to a spiral type grain lifting device.

As mentioned above, the present invention is a grain tank in which the grains in the grain tank 8 are discharged by a grain discharge device consisting of a transfer spiral 10 provided at the bottom and a lifting body connected to the end thereof. 8, a clutch operating lever 32 is provided which interrupts and returns the driving power of the grain discharging device and is biased back, and a locking device that advances and retreats into the operating path of the clutch operating lever 32 near the entry position of the operating path. 42 and engine 8
Normal rotation speed switch S3 detects the normal rotation speed
The normal rotation speed switch S3 is attached to the locking tool 42, and the normal rotation speed switch S3 detects that the normal rotation speed is higher than the normal rotation speed and the clutch operating lever 32 is in the disengaged position or the clutch is operated. When the lever 32 is in the engaged position and the normal rotation speed switch S3 detects that the rotation speed is below the normal rotation speed, the locking tool 42 is withdrawn and the clutch operation lever 3
2 is in the engaged position and the normal rotation speed switch S3 detects that the normal rotation speed is normal, or the clutch operation lever 32 is in the disengaged position and the normal rotation speed switch S3 detects that the normal rotation speed is below the normal rotation speed. Since the locking device 42 is connected in such a way that it advances when the engine speed has not reached the normal speed, the locking device prevents the clutch operation lever from being engaged and prevents abnormal clogging of the grain lifting device. This can be prevented from occurring.

Furthermore, when the engine speed decreases, the clutch is automatically disengaged, thereby preventing clogging of the grain lifting device.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Fig. 1 is a perspective view of the combine, Fig. 2 is a partially cutaway side view of the same, Fig. 3 is a sectional view of the transmission device,
Fig. 4 is a front view of the main parts, Fig. 5 is a sectional view of the cylinder drive section, Fig. 6 a is a partially cutaway side view of the operation section and grain lifting device, and b is a cross section of the clutch operating lever support section. Figures and c are plan views of the lever guide section;
Fig. 7 is a side view of the throttle arm section, Fig. 8 is a front view of the clogging detection switch mounting section, Fig. 9a is a side view of the main clutch section, b is a front view of the grain frying clutch, and Fig. 10 is Front view of shutter operation unit, 1st
1 is an operating lever control circuit diagram, FIG. 12 is a plan view showing another example of the locking tool, and FIG. 13 is a circuit diagram of the same. 8... Grain tank, 10... Lateral transfer spiral, 11
... Lifting device, 21, 29 ... Clutch pulley, 32 ... Clutch operation lever, 42 ... Stopper, S1 ... Clogging detection switch, S3 ... Normal rotation detection switch.

Claims (1)

[Scope of utility model registration request] In the grain tank 8, the grains in the grain tank 8 are discharged by a grain discharge device consisting of a transfer spiral 10 provided at the bottom and a lifting body connected to the end thereof. Clutch operating lever 3 that is biased back while intermittent driving power of the device
2, and a locking tool 4 that moves forward and backward into the operating path of the clutch operating lever 32 near the entry position of the operating path.
2, and a normal rotation speed switch S3 for detecting the normal rotation speed is attached to the engine 8, and the normal rotation speed switch S3 is connected to the locking tool 42, and when the normal rotation speed switch S3 is equal to or higher than the normal rotation speed, When detecting that the clutch operating lever 32 is in the disengaged position or the clutch operating lever 32 is in the engaged position and the normal rotational speed switch S3 is detected to be below the normal rotational speed, the locking tool 42 is withdrawn. The clutch operation lever 32 is in the engaged position and the normal rotation speed switch S3 detects that the normal rotation speed is detected, or the clutch operation lever 32 is in the disengaged position and the normal rotation speed switch S3 detects that the normal rotation speed is detected. If the locking tool 42 detects that the
A grain discharging device in a grain tank, characterized in that the grain discharge device is coupled so that the grains advance.