JPH0419802B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a seedling box feeding device, and more specifically, a seedling box configured to feed seedling boxes to a device that continuously sows a large amount of seeds. Regarding the supply device.

[Conventional technology]

Conventionally, the following operations are required to obtain pine-shaped seedlings for use with a rice transplanter.

In other words, bed soil is supplied to a seedling box of approximately the same size as the pine-shaped seedlings, seeds are sown, covered with soil, and watered, and then the seedling box after sowing is placed under predetermined humidity and temperature conditions. The seeds are allowed to germinate below, and then allowed to grow and become green (references not listed).

[Problem that the invention seeks to solve]

In addition, considering the case where the above-mentioned seeding process is carried out continuously and under automatic control, etc., a large number of seedling growing boxes are required, so for example, the seedling growing boxes before the sowing process are stored in a stack. It is also conceivable to construct a device for supplying seedling growing boxes so that the seedling growing boxes are sent out one by one from the lower end of this stacked group of seedling growing boxes. Here, this device is configured to lift the remaining seedling growing boxes except for the lowest seedling growing box in the group of seedling growing boxes, and send out the seedling growing boxes remaining at the bottom end using a belt conveyor, etc. structure,
If the system is configured to convert the rotational force from the electric motor into vertical driving force via a crank mechanism or cam mechanism, if a power outage occurs during operation, the seedling box that is being lifted will fall under its own weight. ,
It is expected that inconveniences may occur, such as the seedlings getting on top of the seedling boxes being sent out.

SUMMARY OF THE INVENTION An object of the present invention is to provide a seedling box feeding device that feeds out seedling boxes one by one from a group of stacked seedling boxes and does not cause any inconvenience even when the power is cut off.

[Means for solving problems]

The present invention is characterized by a lifter that lifts up the remaining seedling boxes except for the one located at the lowest end of the group of seedling boxes, and a lifter that lifts up the remaining seedling boxes except for the one located at the bottom end of the group of seedling boxes, in order to take out the seedling boxes sequentially from the bottom end of a group of seedling boxes made up of a large number of stacked seedling boxes. In order to move the lifter up and down, it is composed of an electric motor that is linked to the lifter via a crank or cam mechanism, and when the supply of power to the electric motor is stopped, the dead weight of the lifter is A brake mechanism is provided in the lifter's elevating and lowering drive system to prevent the lifter from descending, and its functions and effects are as follows.

[Effect]

When the above characteristics are configured as shown in FIG. 1, for example, an electric motor 21 that moves the lifter 4a up and down
When current is being supplied to the electric motor 21, the plunger 25e actuated by the current from the power supply line (not shown) to the electric motor 21 causes the spring 25a to operate the brake mechanism 25 toward the braking side. In response, the brake mechanism 25 is operated to a non-braking state, and the lifter 4a is allowed to move up and down by the operation of the electric motor 21, and the seedling boxes 1 are sent out one by one from the lower end of the group of seedling boxes 1g. Further, when the current to the power supply line of the electric motor 21 is cut off, the braking mechanism B is set and maintained in the braking state by the biasing force of the spring 25a, as shown in FIG. .

〔Effect of the invention〕

Therefore, although the structure is such that the group of seedling boxes is lifted by an electric motor, even if the power is cut off, there will be no inconvenience such as the seedling box resting on top of the seedling box that is being sent out, and during operation. A seedling box feeding device capable of feeding out seedling boxes from the lower end of a group of seedling boxes was obtained.

〔Example〕

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

As shown in Fig. 4, there is a feed conveyor 2 that transports 1 g of stacked seedling boxes, and an elevator unit 3 that lowers the 1 g of seedling boxes from the feed conveyor 2 to a working level in a suspended state. A seedling box supply section A is formed by the seedling box feeding device 4 which takes out the seedling growing boxes 1 one by one from the group 1g of seedling growing boxes from the elevator unit 3 and sends them out in the horizontal direction. A transport conveyor 5 that transports the seedling raising boxes 1 from the seedling raising boxes 1, a bed soil supply device 6 that supplies bed soil to the seedling raising boxes 1, an irrigation device 7 that sprinkles water on the bed soil, and a sowing device 8 that sows rice seeds on the bed soil. and,
Soil covering device 9 that covers the seedling raising box 1 with soil after sowing
The seeding processing section B is formed by the conveyor 5.
A lift mechanism 10 holds the seedling growing boxes 1 that are continuously fed in by a shelf in a substantially horizontal state and lifts them upward, and the seedling growing boxes 1 lifted upward by this lift mechanism 10 are stacked in a substantially horizontal state. A lateral feed mechanism 11 with a reciprocating structure for feeding to a working position;
The seedling raising box 1 sent out from the lift mechanism 10 by the horizontal feeding mechanism 11 is held in a substantially horizontal state at the level at which it was sent out, and the full width of the seedling raising box 1 is approximately equal to the stacking position in the sending direction of the seedling raising box 1. After reaching the upper part, the opening/closing shelf mechanism 12 opens on both sides to allow the seedling raising boxes 1 to fall, and the transporting cart moves the seedling raising boxes 1 from the transverse feed mechanism 11 to the stacking position and sequentially places them on the transporting cart 13. A seedling plant is constructed by providing a seedling box stacking device C consisting of an elevator mechanism 14 for loading a transport cart which moves downward every time a seedling box 1 is stacked on the seedling box stacking device 13.

This seeding plant is configured to continuously send out seedling raising boxes 1, sowing seeds in the seedling raising boxes 1, and stacking the seedling raising boxes 1 after sowing, so that seedling raising can be carried out in a stacked manner until germination. , seedling raising boxes 1 stacked on the transport trolley 13... is the transport trolley 1
As shown in FIG. 5, the seedlings are sent together with 3 to the budding unit 15, where they are allowed to germinate under predetermined humidity and temperature conditions, and then transferred to the greening seedling shelf 17 by the seedling box loading device 16 for further growth. It is becoming more and more common.

As shown in FIGS. 1 to 3, the seedling box supply device 4 removes the seedling box 1 located at the bottom of the group of seedling boxes 1g in order to take out the seedling boxes 1 sequentially from the bottom of the group of seedling boxes 1g. A lifter 4a that lifts the remaining seedling growing boxes 1, a blocking mechanism 4b that prevents the lowest seedling growing box 1 from being held tangled when lifting the remaining seedling growing boxes 1, and a conveyor belt 4c that sends out the lowest seedling growing box 1. It is configured.

In addition, the lifter 4a includes a shift frame 19 that is movable up and down with respect to the main frame 18 of the seedling box supply device 4, and a shift frame 19 that is capable of moving up and down with respect to the main frame 18 of the seedling box feeding device 4, and a raised seedling box one step higher than the lowest end in order to lift the seedling box 1 when the shift frame 19 is raised. The shift frame 19 is composed of a plurality of lifting tools 20 that sandwich the box 1 from both sides, and is operated by converting power from an electric motor 21 into vertical motion and transmitting it via a crank arm 22.
The lifting tool 20 protrudes toward the seedling growing box 1 when the solenoid 20a is energized.

Further, similarly to the lifting tool 20, the blocking mechanism 4b lifts the seedling box 1 by energizing the solenoid 20a.
The conveyor belt 4c is provided with a plurality of rods 23 protruding in the direction shown in FIG.

In addition, the seedling box feeding device 4 is configured to operate the electric motor 21 and the shift frame in order to prevent the inconvenience of the seedling growing box 1 being lifted down together with the shift frame 19 in the event of a power outage accident during operation. A brake mechanism 25 is interposed in the transmission system with 19.

That is, as shown in FIG. 1, the brake mechanism 25 includes a shift fork 25b that is biased in the braking direction by a spring 25a, and a drive shaft 26 that is operated by the shift fork 25b and that transmits rotational force to the crank arm 22. A friction plate 25c externally fitted through a spline structure, a fixed plate 25d that applies braking force to the friction plate 25c by moving the friction plate 25c in the braking direction, and a fixed plate 25d that applies a braking force to the friction plate 25c by moving the friction plate 25c in the braking direction; It consists of an electrically operated plunger 25e, and the friction plate 25c is pressed against a transmission plate 21b provided on the output shaft 21a of the electric motor 21 by electric power led from a power supply line (not shown) to the electric motor 21 to generate power. At the same time, when the power supply to the power supply line is cut off, the friction plate 25c is operated in the direction of the fixed plate 25d by the biasing force of the spring 25a, so that the electric motor 21 and the drive shaft 26 are is set in an uncoupled state, and is configured to apply a braking force to the drive shaft 26 by pressure contact with the fixed plate 25d.

As shown in FIG. 6, electric power is transmitted to the seedling box supply section A, the seedling processing section B, and the seedling box stacking device C via an inverter 27 that arbitrarily converts the power frequency. The processing speed can be changed by adjusting the .

[Another example]

In addition to the above-described embodiments, the present invention may be implemented by configuring the brake mechanism as an interlocking type, a drum brake type, or the like.

Although numbers are written in the claims for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the seedling box feeding device according to the present invention, FIG. 1 is a front view showing the drive structure of the lifter, etc., FIG. 2 is a front view showing the operating state of the brake mechanism, and FIG. 3 is the seedling box feeding device. A plan view of the supply device, Fig. 4 is a diagram showing the processing system up to stacking processing, Fig. 5 is a diagram showing the processing system from stacking processing to greening processing, and Fig. 6 is a block diagram showing the power supply line of the seeding plant. It is. 1... Seedling raising box, 1g... Seedling raising box group, 4a... Lifter, 21... Electric motor, 25... Brake mechanism.

Claims (1)

[Claims] 1 Seedling raising box group 1 consisting of a stack of many seedling raising boxes 1...
In order to take out the seedling growing boxes 1 sequentially from the lowest end of the group of seedling growing boxes 1g, a lifter 4a lifts the remaining seedling growing boxes 1 except for the seedling growing box 1 located at the lowest end of the group of seedling growing boxes 1g. 4a and an electric motor 21 linked via a crank or cam mechanism, and the electric motor 2
This seedling box supply device is equipped with a brake mechanism 25 interposed in the lifting drive system of the lifter 4a to prevent the lifter 4a from descending due to its own weight in conjunction with the stoppage of supply of power supply current to the seedling box supply device 1.