JPS5810430Y2 - Grain presence detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device that detects the presence of grains by the rocking displacement caused by contact with grains of a rocking member elastically biased to a predetermined posture.

This type of grain presence detection device is installed in a grain bagging device of a combine harvester, etc., and is used for the purpose of detecting that a predetermined amount of grain has been stored in a storage bag. There were the following problems: Machines such as combine harvesters equipped with this type of grain presence detection device are subject to unexpected vibrations due to engine vibration and running.
This vibration may cause the swinging member to swing unexpectedly and cause erroneous detection.

To solve this problem, it is conceivable to increase the urging force that elastically urges the swinging member to a predetermined posture.In this case, although it is possible to prevent unexpected swinging of the swinging member, it is difficult to detect the presence of grains. A problem arises in that the operating pressure increases and the detection error increases.

The present invention was made keeping in mind the above actual situation,
The present invention aims to solve the above-mentioned problem of malfunction without impairing the original function of the detection device.

Embodiments of the present invention will be described in detail below based on illustrative drawings.

The figure shows a grain bagging device installed on a combine harvester,
After being processed by the threshing device (not shown), it is fed into the conveyor cylinder 1.
The apparatus is configured to bag incoming grain as described below.

That is, a bifurcated guide tube consisting of a first guide tube 2 and a second guide tube 3 is connected to the tip of the conveyance tube 1, and the first guide tube 2 and the second guide tube 3 are connected to each other. The tip of the second guide cylinder 2.degree. Second
A swing plate 4 is provided at the branching portion of the guide tubes 2 and 3 for switching the state in which the grains supplied from the conveying tube 1 are guided only to either the first guide tube 2 or the second guide tube 3. is provided.

Moreover, rubber cylindrical bodies 5a, 5b, and 6a t 6b are connected to each of the discharge cylinders 2a, and these cylindrical bodies 6a are connected to grain grains. Storage bag γ・
...It is inserted from above inside.

The grain storage bag 7... has a pair of support rods 8, 8.
Both ends of the upper part are inserted and supported at 9 and 9, and the lower end part is received and supported on a pedestal 10 as shown in FIG.

Furthermore, a device 11a detects that a predetermined amount of grains are accommodated in each of the discharge tubes 2a.

11b, 12a, 12b are equipped with buttons, and the rain detection device 11a is provided in the main discharge cylinders 2a, 3a.

11b is activated, an alarm device (not shown) is activated, and a switching mechanism 24 consisting of a solenoid or the like is activated based on the detection result of the detection device 11a or 11b provided on the auxiliary discharge cylinder 2b or 3b. It is configured to switch and swing the swing plate 4 in the opposite direction.

According to the above configuration, grain bagging is performed as described below.

First, the grains from the conveying tube 1 are transferred to the first guide tube 2.
When the grains are supplied, all of the supplied grains are sent into the storage bag from the main discharge tube 2a.

When a predetermined amount of grains are stored in the bag, the overflow grains are guided and supplied to the next auxiliary discharge cylinder 2b.

When a predetermined amount of grains are stored in the bag, the detection device 11b is activated, and the swing plate 4 is switched to a state where the grains are supplied to the second guide tube 3 and is swung. Then, grains are supplied to the main discharge tube 3a and the auxiliary discharge tube 3b in the same way as the first guide tube 2 described above, and the same operation is repeated to perform bagging.

Furthermore, the bag 7 containing the grains is the first bag containing the grains.
While bagging is being carried out in the guide cylinder 2 or the second guide cylinder 3, the operator closes the upper part with a chuck or the like, and then removes it from the support rods 8, 8 or 9°9. After this bag 7 is removed, a new bag is set.

In order to prevent workers from forgetting these workers, when the rain detection devices 11a and 12a are activated together, an alarm will be issued when the supply progresses with only one bag remaining.

Next, the detection device 11a will be explained.

Each of these detection devices 11a, . . . has a similar configuration, and only one of them 11a will be described below.

That is, a case 13 is removably bolted to the side of the main discharge cylinder 2a, and a pair of support pieces 14 are erected from the case 13.
A support pin 15 is supported at the tips of 4 and 14.

A swinging plate 16 made of synthetic resin is pivotally connected to this pin 15, and this swinging plate 16 is elastically biased by a helical spring 17 toward the side protruding into the main discharge cylinder 2a. , and is received and supported by a continuous plate piece 18 from the case 13.

In addition, a magnetic body 19a is embedded in the swing plate 16, and a detection section 19b is provided in the case 13 to detect when the magnetic body 19a approaches more than 2 constants. A well-known proximity switch 19 is constituted by the body 19a and the detection section 19b.

Therefore, when the grains that have stayed in the main discharge tube 2a at 1 flow into the case 13 through the opening 20 formed in the main discharge tube 2a, the rocking plate 16 is pressed and rocked. The movement is detected by sensing the proximity switch 19.

Further, a balance weight 21 is connected to a side of the swing plate 16 opposite to the swing fulcrum.

That is, a bolt 23 is screwed onto the upper part of the rocking plate 16, the weight 21 is fitted onto the bolt 23 so as to be movable in the vertical direction, and a spring 22 is interposed between the rocking plate 16 and the weight 21. The weight 21 is urged upward by the swing plate 16, and the weight 21 is connected to the swing plate 16.

Therefore, by connecting the weight 21 to the swing plate 16 in this way and making the overall center of gravity of the swing plate 16 and the weight 21 approximately coincide with the swing fulcrum, the swing plate 16 can be This prevents the unit from swinging unexpectedly.

The center of gravity is adjusted by rotating the bolt 23 to change and adjust the vertical height of the balance weight 21.

Further, reference numeral 24 in the figure is a bolt that changes and adjusts the elastic force of the spring 170 to adjust the biasing holding force of the swing plate 16.

In summary, the grain presence detection device according to the present invention is characterized in that it has the officially registered structure and that a balance weight 21 is connected to the swinging member 16.

That is, by the action of the balance weight 210, the center of gravity of the swinging member 16 can be aligned with or close to the swing axis of the member 16, so the rotational moment of the member 16 due to the vibration of the aircraft is reduced, and the vibration caused by the vibration of the aircraft is reduced. Moving member 16
This has made it possible to prevent unexpected shaking.

Moreover, when the rocking member 16 is pushed by the grains and starts rocking, the resistance due to the gravity of the member 16 is small, so the rocking resistance can be reduced by strengthening the spring to prevent unexpected rocking. Not only does it not increase, but it becomes more susceptible to oscillation, and when detection is truly required, it is now detected reliably.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the grain presence detection device according to the present invention, in which FIG. 1 is a perspective view showing a grain bagging device, FIG. 2 is a partially cutaway side view of the same, and FIG. 3 is a grain bagging device. A side view of the detection device, and FIG. 4 is a partially cutaway rear view of the same. 16... Swinging member, 21... Balance weight.

Claims (1)

[Scope of utility model registration request] A balance weight 21 is connected to the swinging member 16 for a device that detects the presence of grains by the swinging displacement of the swinging member 16 which is elastically biased into a predetermined posture and comes into contact with the grain. A grain presence detection device characterized by: