JPS5810429Y2 - Discharge tube lifting mechanism in automatic grain bagging equipment - Google Patents

Description

[Detailed description of the device] This device stores grains such as paddy discharged from the threshing device of a combine harvester in a tank, and moves them up and down a discharge tube that communicates with this tank to take them in and out of the bag opening. This invention relates to a device for automatically bagging grains.

This type of automatic bagging device lowers and inserts a discharge tube into the bag opening to discharge grains into the bag, and detects when the bag is full of grains using a fullness detection switch built into the tank. This raises the discharge tube and removes it from the bag mouth, and stops the discharge of the grains. However, in the past, the fullness detection switch malfunctioned due to vibrations when the combine harvester was running, and the discharge tube would rise when the harvester was not full. there were.

This invention overcomes the drawbacks of the prior art and ensures that the grain is filled into the bag by raising the ejector only when the bag is full of grains.

This invention will be explained based on the embodiment shown in the drawings.
A tank 1 communicates with a threshing device (not shown) of a combine harvester, and stores selected grain such as paddy supplied from a grain lifting cylinder 3 having a screw conveyor 2.

A discharge tube 4 communicating with the inside of the tank is inserted into the tank 1 so as to be movable up and down.

A swing rod 7 is rotatably attached to a support shaft 6 provided in the model 5, and the tip of the swing rod 7 and the upper end of the discharge pipe 4 are connected via a connecting shaft 9 inserted into a guide hole 8 drilled in the outer wall of the tank 1. Concatenate.

An opening/closing plate 10, which closes when the discharge tube 4 goes up and opens when it goes down, is attached to the discharge port at the lower end of the discharge tube 4 via a connecting shaft 9 and a suitable link mechanism.

11 is a crank attached to the output shaft 13 of the gear box 12, which is connected to the swing rod 7 via the connecting rod 14;
Further, the shaft 15 of the gear box 12 and a drive source (not shown) are connected via a transmission chain 16.

The gear box 12 is equipped with a drive gear 18 that meshes with the gear 11 of the input shaft 15 and constantly rotates, and a rotating wheel 19 attached to the output shaft 13, facing each other, so that the rotation of the driving gear 18 is connected to the rotating wheel 19. A clutch 20 that transmits data in a detachable manner is configured.

This clutch 20 consists of an inner cam 21 protruding from the cylindrical inner circumferential surface of the drive gear 18 and an L-shaped rotation 22 rotatably attached to the plate surface of the rotating wheel 19. The transmission of power from the human power shaft 15 to the output shaft 13 is brought into contact and separated by the engagement and disengagement of the shaft 22a.

In FIG. 3, a spring 24 wound around a support shaft 23 of the rotator 22 biases the rotator 22 clockwise.

1. The clutch pin 25 is rotated counterclockwise against the spring 24 to separate the clutch 20 and stop the discharge tube 4 near the bottom dead center inside the bag. Its tip is for rotation 2
The gear box 12 is slidably inserted into and out of the rotation locus of the outer end 22b of the gear box 12.

The clutch pin 25 is further inserted into a solenoid L attached to the model of the gear box 12.

S is a fullness detection switch built into the tank 1 and is made of a piezoelectric transducer.

As the full detection switch S, a constantly rotating helical body is vertically movable in the tank 1, and the helical body rises due to the resistance of the grains accumulated in the tank and operates the switch to detect the tank being full. You may use something that detects it.

A timer T1 is connected to close the switch MS after a certain period of time has passed after the full detection switch S is energized.

The switch MS is connected to a timer T2 that opens the switch BS after a certain period of time has elapsed after energization, and further via the switch BS,
Connect to solenoid L.

B is a manual button.

Note that 26 is a clutch pin that separates the clutch 20 near the top dead center inside the bag and stops the discharge tube 4. When this pin is pulled out, the clutch 20 is engaged and the discharge tube 4 is lowered.

Then, the discharge tube 4 is inserted downward into the bag mouth of the bag 28 suspended from the bag support rod 21 provided below the tank 1, and the grains in the tank 1 inside the bag are discharged.

When the bag is full of grains and the grains accumulate in the tank 1 from the discharge tube 4, the full detection switch S closes and energizes the timer T1. For example, after a few seconds have elapsed after the energization, the switch MS closes and the solenoid L is activated through the switch BS. energize.

As a result, the solenoid L attracts the clutch pin 25, pulls out its tip from the rotation locus of the outer end 22b of the rotary member 22, rotates the rotary member 22 to the position shown by the dashed line, and engages the clutch 20.

As a result, the output shaft 13 rotates, rotates the turning rod 7 via the crank 11, ascends the discharge tube 4, and lifts the opening/closing plate 10.
Remove it from the bag while closing it.

When the switch MS closes, the shifter T2 is energized, and when a certain period of time necessary to pull out the clutch pin 25 has elapsed, the switch BS opens to cut off the energization to the solenoid L and return the clutch pin 25.

As explained above, in this invention, the timer T1 that turns on the switch MS after a certain period of time has passed after energization is connected to the full detection switch S, and this switch MS is connected to the solenoid L that attracts the clutch pin 25. If the detection switch S is not closed for a certain period of time for the timer T1 to operate, the discharge tube 4 will not rise.

Therefore, even if the fullness detection switch S accidentally opens or closes instantaneously due to vibrations when the combine harvester is running, the solenoid L will not be energized, so the discharge tube 4 will not be raised before the bag is full of grains, making it reliable. This produces the effect that grains can be packed into bags.

[Brief explanation of the drawing]

Fig. 1 is an overall front view showing a part of the device of the present invention in cross section, Fig. 2 is an enlarged sectional view of the main part of Fig. 1, Fig. 3 is a sectional view taken along line A-A in Fig. 2, FIG. 4 is a circuit diagram of the device of the present invention.

Claims (1)

[Scope of utility model registration request] This automatic grain bag is provided with a discharge tube 4 that communicates with a tank 1 and is movable up and down, and after the discharge tube 4 is inserted downward into the bag opening and the grains are discharged into the bag, the discharge tube 4 is raised and taken out from the bag opening. In the filling device, an output shaft 13 attached to a crank 11 for raising and lowering the discharge tube 4 is connected to a human power shaft 15 via a clutch 20, and a clutch pin 25 for connecting and releasing the clutch 20 is provided, and the output shaft 13 is installed inside the tank 1. When the full detection switch S is energized and a certain period of time elapses, it is connected to the timer T1 that turns on the switch MS, and at the same time, the renoid L that attracts the clutch pin 25 is connected.
is connected to the switch MS, and the clutch 20 is disengaged to raise the discharge tube 4, which has stopped near the bottom dead center inside the bag, to the full detection switch S.