JPH0228295B2 - KOKUMOTSUJIDOFUKUROZUMESOCHI - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a grain storage bag that is inserted through a pair of rotating shafts for hanging and supporting bags, and is moved in the axial direction through a threaded portion formed on the rotating shafts. The present invention relates to an automatic grain bagging device configured to forcefully feed the grains and place them below a grain discharge port.

[Prior Art] Conventionally, a pair of rotating shafts are spaced so that a grain storage bag, which is suspended and supported through hole forming members formed at both ends of the rotating shaft, can be stretched without sagging. The grain storage bag was configured to be forcibly fed sequentially through a threaded portion formed on the rotating shaft.

[Problem that the invention seeks to solve]

However, the frictional force due to the relative rotation between the hole forming member fitted into the threaded part of the rotating shaft and the threaded part may cause variations in the manufacturing accuracy of the threaded part or variations in the support interval between the pair of rotating shafts. When the grain size increases due to such reasons, the hole forming member part follows the rotation axis and rotates upward, causing the grain storage bag to not be fed out and positioned below the discharge port in a predetermined position, or automatic bag filling. There was a problem that prevented things from going smoothly.

SUMMARY OF THE INVENTION An object of the present invention is to provide a product that can prevent the conventional lifting phenomenon and that can safely and smoothly replenish the rotating shaft of a grain storage bag by adding a simple structure.

[Means for solving problems]

The characteristic configuration according to the present invention is such that the bag floating prevention member that contacts or is close to the upper edge of the shaft insertion portion of the grain storage bag group inserted and supported by the rotating shaft is separated from the floating prevention action position by a large distance from the rotating shaft. In addition, a mechanism is provided to detect the position of the floating prevention member, so that the rotating shaft can be driven in the forward bag forwarding direction only when the floating prevention member is in the activated position. The rotary shaft is configured to be driven in the reverse direction when it is in the non-operating position, and its effects are as follows.

[Effect]

In other words, the blocking member applies a reaction force to the grain storage bag that is lifted as the rotating shaft rotates, thereby preventing the bag from being lifted up, and the grain storage bag is repeatedly held in a state where the lifting of the grain storage bag is suppressed. Therefore, it can be drawn out and positioned below the discharge port in a stable desired posture.

Moreover, since the blocking member can be switched to a non-working position away from the rotating shaft, grains can be stored easily and quickly by using the rotating shaft that is allowed to rotate in the reverse direction when in this non-working position. Not only can the bag be refilled, but also the detection mechanism's blocking member activation position detection function can prevent forgetting to reset the blocking member, and can also be used when the blocking member is in the non-operating position. Since restarting of the automatic bagging mechanism can be reliably prevented during bag replenishment work, the work can be performed safely.

〔Effect of the invention〕

By simply modifying the structure by adding a blocking member, it can be done without any modification to the original components.
We have now been able to provide a system that not only allows automatic bag filling work but also allows safe bag replenishment work that requires manual work.

〔Example〕

Below the hopper 8 in which grains are stored, a pair of left and right rotational shafts 4, 4 for hanging bags is installed and pivoted, and the rotational shafts 4 are suspended from both ends in the opening width direction near the bag opening edge 1. A grain discharge port 5 is provided at the lower part of the hopper 8 by inserting and supporting the grain storage bag 3 to which the supporting hole forming members 2, 2 are attached.
The bag is automatically fed and moved downward by the bag feeding mechanism 21, and the filling mechanism 22
An automatic grain bagging apparatus is constructed in such a manner that the bag is automatically filled by the bag opening edge 1, and the fastener 20 provided at the bag opening edge 1 is automatically closed by the closing mechanism.

The bag feeding mechanism 21 for the bag 3 will be described in detail.
...Springs 12, 12 are provided to elastically push the group toward the tip side in the direction of the rotational shafts 4, 4, and storage portions 13, 13 are formed in the middle of the rotational shafts 4, 4, in which the bags 3 are stacked back and forth. Furthermore, on the distal end side, there is a rotary shaft 4, which is engaged with the hole forming members 2, 2 and is driven by the rotation of the motors 15, 15 provided at the rear end. Threaded portions 14, 14 are provided for feeding out the bag 3 in the direction of the axis of rotation, and strip plate-like reinforcements are provided on the front and back sides of the bag 3, which are connected to the hole forming members 2, 2, and are provided on opposite sides of the bag 3. The bag 3 is configured to be automatically opened below the discharge port 5 by cooperation of the members 6, 6 and the threaded portions 14, 14 having lead angles inclined in the same direction.

In detail, the automatic grain filling mechanism 22 includes a movable discharge port 5 that moves downwardly at the grain discharge port 5.
A, and a shutter member 10 that is vertically swingable around a horizontal axis on the outer side of the lower end of the discharge port 5A.
A, 10A, in its closed state, its tip 10
The shutter members 10A and 10A are configured to have irregular positions that are misaligned when viewed from above, and the shutter members 10A and 10A are automatically swung to the open position as the movable discharge port 5A is lowered. By doing so, the bag opening edge 1 of the storage bag 3 is opened wide, and the movable discharge port 5A is inserted into the bag 3,
Based on the operation of the limit switch _S5 attached to the lower surface of the shutter members 10A, 10A to detect the open position of the bag 3, the shutter members 10A, 10
Sliding type first shutter 7 located above A
The structure is such that grain is automatically filled in the open position.

To explain the drive mechanism for the above in detail, a drive chain 19 stretched parallel to the bag 3 includes a first arm 16 that swings a lever 5a that raises and lowers the movable discharge port 5A, and a first shutter. A second arm 17 for operating the lever 7a that opens and closes the storage bag 7, and a locking arm 18 that locks the slider 9 of the fastener 20 installed at the opening edge of the storage bag 3 and moves in the direction of closing the fastener. Each one is installed protrudingly. These three arms 16, 17, 18 are
The first rotational movement of the chain 19 protruding from these from the first position to the second position causes the first arm 16
so that the lowering operation of the lift operation lever 5a by the operator and the opening operation of the opening/closing operation lever 7a by the second arm 17 are performed in the order of description, and from the second position to the third position via the first position. By moving two positions, the opening/closing operation lever 7a by the second arm 17
is attached to the chain 19 so that the closing operation, the raising operation of the elevating operation lever 5a by the first arm 16, and the closing operation of the slider 9 by the locking arm 18 are performed in the order described. The rotary chain 19 detects that the bag 3 is placed below the discharge port 5, automatically starts the first rotary movement, and activates the second limit switch _S1 .
The arm 17 is automatically stopped based on the detection, and the second rotational movement is automatically started based on the detection of the full detection switch _S2 provided at the movable discharge port 5A, and the slider 9 is in the closed position. Based on the detection by the limit switch, which is one of the sensors _S3 for detecting the completion of fastener closing, the second rotational movement is stopped and the return rotational movement to the first position is automatically started. , is configured to automatically stop its return rotational movement based on the detection of the limit switch _S4 .

A bag floating prevention member 23 having a U-shaped cross section is disposed directly above the rotating shaft 4 along substantially the entire length of the rotating shaft 4. Since the holes are placed in contact with or close to the upper edge over a relatively wide range on the left and right with the hole forming member 2 at the center, it is possible to prevent the bag 3 from floating and disturb its posture, and the subsequent automatic bag filling operation is facilitated. can be done.

A limit switch _S6 is provided on the upper surface of the blocking member 23, and is configured to detect whether or not the bag 3 is fed out below the discharge port ₅ via an elastic membrane 24 stretched below the limit switch S6. ing. Therefore, since this limit switch _S6 is attached and fixed to the blocking member 23 which has a relatively strong structure, it is not easily affected by vibrations, etc.
Since it is configured to sense through the elastic membrane 24, a stable detection operation can be performed. The blocking member 23 is vertically swingable around its base end, and is effectively utilized when refilling the three groups of bags.

The pair of left and right blocking members 23 are pivotally supported by a connecting member 28 so as to be able to swing up and down at a fulcrum X on the bag dispensing side, so that the left and right sides can be operated simultaneously, and are also supported by a tension spring 25 that can be fixed in position from the fixed side. A manual lever 27 can be switched between a floating preventing action position and a non-working position that is far away from the rotating shafts 4, 4, and a limit switch 26a and a blocking member are provided on the fixed side as a position detection mechanism 26 for this floating preventing member. An operating piece 26b is provided on the side, and only when the floating prevention member 23 is in the operating position, an automatic bagging work switch provided at a separate position can be set to the operating state, and the rotating shaft 4 is rotated in the normal bag feeding direction. When it is allowed to drive and is in the non-operating position,
In this state, only when the automatic switch is set to the off position, is the construction such that driving in the reverse direction is permitted.

[Another example]

The blocking member 23 has various shapes such as a flat plate, and is not a single piece, but a plurality of rod-like or plate-like members arranged side by side with width dimensions similar to those of a single piece. But that's fine.

The position detection mechanism 26 is a limit switch 2.
6a and the operating piece 26b may be interchanged, or a proximity switch or the like may be used in place of the limit switch 26a.

The above embodiment can be used by being mounted on a mobile threshing machine such as a combine harvester.

[Brief explanation of drawings]

The drawings show an embodiment of the automatic grain bagging device according to the present invention, with FIG. 1 being a partially cutaway front view and FIG. 2 being a partially cutaway side view. 3... Grain storage bag, 4... Rotating shaft, 5... Grain discharge port, 14... Threaded portion, 23... Blocking member, 2
6...Position detection mechanism.

Claims (1)

[Claims] 1. Grain storage bags 3 inserted through a pair of bag suspension support rotary shafts 4, 4 are forcibly fed progressively in the axial direction via threaded portions 14, 14 formed on the rotary shafts 4, 4, to reach the grain discharge port. The automatic grain bagging device is configured to be placed in a feeding position below the rotary shafts 4, 4, and the bag floating contacts or approaches the upper edge of the shaft insertion portion of the three groups of grain storage bags inserted and supported by the rotating shafts 4, 4. The floating prevention members 23, 23 are arranged so as to be switchable between a floating prevention working position and a non-working position that is largely separated from the rotating shafts 4, 4, and a mechanism 26 for detecting the position of the floating prevention members 23 is provided. The rotary shafts 4, 4 are allowed to be driven in the normal direction of bag forward feeding only when the floating prevention members 23, 23 are in the active position, and the rotating shafts 4, 4 are allowed to be driven in the reverse direction when they are in the non-active position. An automatic grain bagging device configured to be driven by.