JPH0441969B2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Application Field] The present invention provides a roll that feeds out a set amount of powder or granular material by reciprocating rotation within a set angle. and a second roll part integrally rotatably and slidably connected to the first roll part, the first roll part is integrally rotatably attached to a rotating support shaft that is driven to reciprocate, and the second roll part is integrally rotatably connected to the second roll part. A feed-out amount adjustment screw shaft screwed onto the second roll portion so as to slide against the first roll portion to adjust the feed amount can be freely rotated together by friction with the first roll portion. The present invention relates to a feed-out amount adjusting device for a powder and granular material supply work vehicle, which is provided concentrically with the rotational support shaft in such a state.

[Conventional technology]

Conventionally, in the above-mentioned powder supply work vehicle, as shown in, for example, Japanese Utility Model Application Publication No. 59-193220, the feeding amount is adjusted by manually rotating the feeding amount adjusting screw shaft. There was room for improvement as follows.

[Problem that the invention seeks to solve]

That is, in order to adjust the feeding amount, the troublesome effort of rotating the adjusting screw shaft was required.

It is an object of the present invention to provide an easy-to-operate adjustment of the feeding amount and a simple structure.

[Means for solving problems]

The characteristic configuration of the present invention is that, in the above-mentioned powder supply work vehicle, a first ratchet pawl that engages with the feeding amount adjusting screw shaft so as to prevent rotation only in the forward rotation direction; By providing the second ratchet pawls which engage the amount adjusting screw shaft so as to prevent only the reverse direction, the second ratchet pawls can be freely operated and released, and the functions and effects thereof are as follows.

[Effect]

When both the first ratchet pawl and the second ratchet pawl are in the deactivated state, both ratchet pawls are connected to the second roll portion and the feed amount adjusting screw when the rotation support shaft is rotated in either the forward or reverse direction. This enables the shaft to be rotated integrally with the shaft, and the second roll portion does not slide relative to the first roll portion and no change in the amount of feeding occurs regardless of whether the second roll portion is threaded with the feeding amount adjustment screw shaft. . When only the first ratchet pawl is activated, when the rotation support shaft is rotated in the reverse direction, the first ratchet pawl allows the second roll portion and the feeding amount adjustment screw shaft to rotate integrally. and when the rotating support shaft rotates in the forward rotation direction,
The first ratchet pawl locks and fixes the feeding amount adjustment screw so that it does not come together, and the second roll portion is rotated via the first roll portion by the rotating rotating support shaft and is screwed into engagement with the feeding amount adjusting screw. the first roll part. That is, due to the rotational force of the rotating support shaft in the normal rotation direction, the second roll portion is slid with respect to the first roll portion in a predetermined and constant direction determined by the helical direction of the feed amount adjustment screw. Then, when only the second ratchet pawl is activated, when the rotation support shaft is rotated in the normal rotation direction, the second ratchet pawl, the second roll portion and the feeding amount adjusting screw are rotated integrally. When the rotating support shaft is rotated in the reverse direction, the second ratchet pawl locks and fixes the feeding amount adjusting screw so that it does not rotate, and the second roll portion is rotated by the rotating rotating support shaft. It can be rotated through the first roll part and slid relative to the first roll part for threaded engagement with the payout adjustment screw. That is, the rotational force of the rotating support shaft in the reverse direction causes the second roll portion to slide relative to the first roll portion in a direction opposite to the direction in which the first ratchet pawl acts.

〔Effect of the invention〕

(1) By operating only one of the ratchet pawls, the second roll portion is slid relative to the first roll portion by the rotational force of the rotating support shaft, thereby adjusting the amount of payout. This can be done by simply switching the first ratchet pawl or the second ratchet pawl to the active state, making it easy to adjust the feeding amount.

(2) By using the rotational force of the rotating shaft, which originally drives the feeding roll, as the operating force for adjusting the feeding amount, that is, the operating force for sliding the second roll part, Second
The structure can be simplified so that a special drive structure for sliding the roll part is not required, which is advantageous from an economic point of view.

〔Example〕

As shown in FIG. 7, a plurality of seedlings are planted in parallel in the lateral direction of the wheeled self-propelled aircraft so that it can be raised and lowered via a linkage mechanism 2 that is swung up and down by a hydraulic cylinder 1 at the rear of the wheeled self-propelled aircraft. The arm 3... and a working device having a fertilizing device 4, etc. that supplies fertilizer grains near each seedling planted by these seedling planting arms 3... are connected, and a working device is connected to the working device via the rotating shaft 5 from the self-propelled machine. The paddy field work vehicle is configured to transmit power and apply fertilizer while planting seedlings.

The fertilizer application device 4 is constructed as shown in FIGS. 6 and 7.

That is, a plurality of fertilizer feeding devices 7, 7 are installed in series at the bottom of each of the plurality of fertilizer tanks 6, 6, and a plurality of furrowers are connected to each of these fertilizer feeding devices 7 via a fertilizer supply hose 8. 9...
The seedling planting arms 3 are attached to the grounding float 10 with one arm positioned near each arm. Then, one of the seedling planting arms 3 is connected to the transmission case via a link mechanism 13 to a rotary shaft 12 that integrally supports the feeding rolls 11 of the plurality of fertilizer feeding devices 7... A link mechanism 15 drivably attached to 14
Fertilizer dispensing device 7... Each dispensing roll 11 is driven to reciprocate within a set angle in conjunction with the seedling planting movement of the seedling planting arm 3. The two fertilizer retrieval recesses 16, 16 are used to take out a set amount of granular fertilizer from the fertilizer tank 6, and the taken-out fertilizer is fed out into the inside of the case 17 and falls into the inside of the groove formed in the field by the furrower 9. It is arranged to be supplied.

In each of the plurality of fertilizer feeding devices 7,
As shown in FIG. 1, the fertilizer removal recess 16 is
Two roll parts 1 constituting the feeding roll 11
1a and 11b, the first roll portion 11a and the groove are attached to the rotating support shaft 12 so as to be integrally rotatable, and the tongue piece portion is fitted into the groove of the first roll portion of the other second roll portion 11b. 18. a boss portion 19 of the second roll portion 11b;
A threaded cylindrical shaft 20 for adjusting the feeding amount, which is fitted on the rotary support shaft 12 concentrically and relatively rotatably, is screwed together, and when the feeding roll 11 is driven,
The first roll portion 11a and the second roll portion 11a of the tongue portion 18
For the engagement of the roll portion 11b and the first
Due to the friction between the roll portion 11a and the threaded cylinder shaft 20 via the friction ring 21, the first roll portion 1
1a, the second roll portion 11b, and the threaded cylinder shaft 20 are configured to rotate integrally. As shown in FIGS. 1 and 2, the leaf spring 28 is fixed to the feeding case 17 in a state where it is engaged with the dial portion 20a of the threaded cylindrical shaft 20 so that only relative rotation is possible, and the threaded cylindrical shaft 20 First roll portion 11
The first roll portion 11a is configured not to slide with respect to the rotation support shaft 12 due to the engagement of the first ratchet pawl 22a with respect to the dial portion 20a.
The threaded cylinder shaft fixture 23, which is provided with a second ratchet pawl 22b, is attached to the support member 24 fixed to the feeding case 17 so as to swing around the axis of the support shaft 25, and both ratchet pawls 22a, 2
A pair of springs 26a, 2 are connected to a non-acting device (off) in which both springs 2b are separated from the dial portion 20a.
6b, and a pair of electromagnetic solenoids 27a, 27b perform rocking motion from the non-operating position (off), as shown in FIG. Said solenoid 2
A pair of electromagnetic solenoids 27a and 27b are operated by an increase operation switch 32 and a decrease operation switch 33, which are arranged near the fertilizer dispensing device 7 and linked to the drive circuit 31 of the fertilizer feeder 7a and 27b. The amount of feed is adjusted using power.

That is, when one electromagnetic solenoid 27a is energized, the screw cylinder shaft fixing device 23 assumes the first operating position (on-A), as shown in FIG.
At the operation position where the ratchet pawl 22a comes into contact with the dial portion 20a, the second ratchet pawl 22b becomes the action release position where it separates from the dial portion 20a, and when the rotation support shaft 12 is rotated in the reverse direction B, the first ratchet pawl 22b
Even if the ratchet pawl 22a enters into each of the plurality of first recesses 29 of the dial portion 20a, it escapes and swings, allowing the second roll portion 11b and the threaded cylinder shaft 20 to rotate together. When the shaft 12 is rotated in the normal rotation direction A, the first ratchet claws 22a are selectively inserted into the plurality of first recesses 29 to lock and fix the threaded cylinder shaft 20 so that it is not rotated. , by rotating the second roll part 11b via the first roll part 11a by the rotation support shaft 12, the second roll part 11b is attached to the first roll part 11a in order to be screwed into the threaded cylinder shaft 20. By sliding the tongue piece 18 into the first roll groove, the length of the tongue piece 18 inserted into the first roll groove is shortened, and the volume of the recess 16 for taking out the fertilizer is increased. and,
When the other electromagnetic solenoid 27b is energized, the threaded cylinder fixture 23 moves to the second position as shown in FIG.
At the action release position where the first ratchet pawl 22a is separated from the dial portion 20a in the working position (on-B), the second ratchet pawl 22b is moved away from the dial portion 20a.
0a, and when the rotation support shaft 12 is rotated in the normal rotation direction A, even if the second ratchet pawl 22b enters each of the plurality of second recesses 30 of the dial portion 20a, it escapes and swings. And the second
This allows the roll portion 11b and the threaded cylinder shaft 20 to rotate together, and when the rotation support shaft 12 is rotated in the reverse direction B, the second ratchet pawl 22b
are alternatively embedded in the plurality of second recesses 30 to lock and fix the neck cylinder shaft 20 so as not to rotate, and the second roll portion 11b is inserted through the first roll portion 11b by the rotation support shaft 12. By the rotation operation, the second roll portion 11b is slid against the first roll portion 11a in order to be screwed into the threaded cylinder shaft 20, and the length of insertion of the tongue portion 18 into the first roll portion groove is adjusted. By increasing the length, the volume of the recess 16 for taking out the fertilizer is reduced.

The first roll portion 1 of the second roll portion 11b
As shown in FIG. 1, the sensor 34 which detects the position with respect to the second roll portion 11b and outputs the detected position as an electric signal is arranged so as to detect the position of the boss portion 19 of the second roll portion 11b. In order to enable rotation of the roll portion 11b, a sensing portion 34 is provided.
a is attached to the feeding case 17 so as to be relatively rotatably engaged with the boss portion 19. And the fifth
As shown in the figure, the training result obtained by the sensor 34 is inputted to the feeding amount detection circuit 35, and the feeding amount is detected based on the detection result, and the detection result by the feeding amount detection circuit 35 is inputted to the feeding amount detection circuit 35. The detected feeding amount is input to the operation circuit 37 of the feeding amount digital display device 36 disposed near both operation switches 32 and 33, and is displayed, so that the feeding amount can be accurately set to the desired amount. It is designed so that it can be easily adjusted.

As shown in FIG. 5, the sensor 34 is connected to a feed-out amount adjustment/stop circuit 38, and the feed-out amount adjustment/stop circuit 38 is
1b reaches the stroke end on the side where the feeding amount is decreased and the stroke end on the side where the feeding amount is increased, a signal is sent from the sensor 34 to give priority to the information from both the operation switches 32 and 33 and to turn off both the solenoids 27a and 27b. The drive circuit 31 is configured to automatically operate based on the information. In other words, when the feed roll 11 reaches a zero feed amount state and a maximum feed amount state, even if the decrease operation switch 32 and the increase operation switch 33 are turned on and operated, the first ratchet pawl 22a and the second ratchet pawl 22a
The ratchet pawl 22b is operated to a released state to prevent damage to the device.

[Another example]

The present invention can also be applied to a work vehicle exclusively for fertilizing or for sowing seeds.

The quantity operation switches 32, 33 and the display device 3
6 may be arranged in the control section so that the amount of feeding can be adjusted while working.

As means for enabling the switching operation between the activated state and the deactivated state of the pair of ratchet pawls 22a and 22b, a configuration in which the ratchet pawls are selectively switched or a configuration in which manual operation force is used directly is adopted. It may also be carried out.

[Brief explanation of drawings]

The drawings show an embodiment of the feeding amount adjusting device for a powder supply work vehicle according to the present invention, and FIG. 1 is a cross-sectional view of the feeding device, FIG. 2 is a front view of the ratchet pawl installation part, FIG. FIG. 4 is a front view of the ratchet claw in its operating state, FIG. 5 is a block diagram of the operating system, FIG. 6 is a rear view of the fertilizer delivery section of the fertilization device, and FIG. 7 is a side view of the rear of the paddy field working vehicle. DESCRIPTION OF SYMBOLS 11... Feeding roll, 11a... First roll portion, 11b... Second roll portion, 12... Rotating shaft, 20... Screw shaft, 22a... First ratchet claw, 22b... Second ratchet claw , A...Forward direction, B...Reverse direction.

Claims (1)

[Claims] 1. A feed roll 11 that feeds out a set amount of powder or granular material by reciprocating rotation within a set angle is connected to a first roll portion 11a and the first roll portion 11a so as to be integrally rotatable and slidable. Second roll portion 11
b, the first roll portion 11a is integrally rotatably attached to a rotary support shaft 12 that is driven to reciprocate, and the second roll portion 11b is slidable with respect to the first roll portion 11a. The feeding amount adjusting screw shaft 20 screwed onto the second roll portion 11b is screwed onto the second roll portion 11b so as to adjust the feeding amount by adjusting the feeding amount.
A feed-out amount adjusting device for a powder supply work vehicle, which is provided concentrically with the rotational support shaft 12 so as to be able to integrally rotate due to friction with the roll portion 11a, and the feed-out amount adjusting device is provided on the feed amount adjusting screw shaft 20. A first ratchet pawl 22a engages to prevent rotation only in the forward direction A, and a first ratchet pawl 22a engages the feed amount adjusting screw shaft 20 to prevent rotation only in the reverse direction B. This is a feed-out amount adjusting device for a powder supply work vehicle, in which two ratchet claws 22b are provided so that they can be operated and released.