JPH1132518A - Seedling feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling feeder for feeding a nursery box onto the ground. SOLUTION: This seedling feeder is equipped with a seedling storage part for providing seedling shelves capable of placing six nursery boxes 1 in 10 stages in vertical direction, a lifting and lowering mechanism capable of driving, lifting and lowering these seedling shelves, a carrying mechanism capable of feeding out these nursery boxes 1 from the lower direction of the seedling storage part and a carrying rail capable of transferring the nursery box 1 fed out by the carrying mechanism onto the ground and further, a carrying clutch G for changing over the carrying rail to a driving and carrying state for forcibly carrying the nursery box 1 and a natural carrying state enabling transfer by gravity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling supply device which operates so that seedling receiving tools stored in a seedling storing section are sequentially placed on the ground. And a drive structure for a carry-out rail that transfers the rail to the ground.

[0002]

2. Description of the Related Art As a device for supplying seedlings on the ground, there is known a seedling box supply / collection machine disclosed in Japanese Patent Application Laid-Open No. 8-308320. This is a dedicated machine that can supply the seedling boxes after greening stacked on a trolley etc. on the ground for hardening, and the collecting state where the seedling boxes after hardening are picked up from the ground and collected. Was composed.

[0003]

The seedling box supply / recovery machine is provided with a seedling storage part and a transport mechanism on a traveling machine, and can be operated by a single unit. In addition, the operation time in one year is very short and the operation rate is low like a rice transplanter, and it is an expensive machine, and there is room for improvement in terms of economy. On the other hand, in Japanese Patent Application No. 9-20169 filed earlier, a seedling supply device mounted on a self-propelled body such as a truck is proposed, which is configured to supply seedlings to rice transplanters. Appropriately modified, it seems that it can be used as a device to supply seedling catchers to the ground. An object of the present invention is to configure a seedling supply device that supplies seedlings on the ground at low cost.

[0004]

[Means for Solving the Problems]

[Configuration] A first invention comprises a seedling storage section provided with a plurality of upper and lower seedling support sections on which a seedling receiving device can be placed, an elevating mechanism capable of driving up and down the seedling support section, and a seedling from below the seedling storage section. A delivery mechanism capable of delivering the receiving tool, and a delivery rail capable of transporting the seedling delivery tool delivered by the delivery mechanism onto the ground, and a driving transport state in which the delivery rail is forcibly transporting the seedling receiving tool; Characterized in that it is configured as a seedling supply device so as to be freely switchable to a natural transport state in which the transfer by the seedling can be performed.

According to a second aspect of the present invention, in the first aspect, the unloading mechanism is configured to be of a drive type in which the seedling receiving device is forcibly transferred by an actuator, and the power of the unloading mechanism is adjusted so that the driving and transporting state appears. And a state in which the power of the unloading mechanism is not transmitted to the unloading rail so that the natural transport state appears.

According to a third aspect, in the first aspect, a plurality of unloading rails are provided with rotatable rollers arranged in parallel in the transport direction.
An endless rotating band that can contact the bottom surface of the seedling receiving device placed on these rollers and can be forcibly transported in the transport direction, a transmission mechanism that can drive the endless rotating band, and an unloading clutch, The unloading clutch is moved upward by moving a pair of loops around which the endless rotating band is wound, and in a transmission state in which the endless rotating band contacts the bottom surface of the seedling receiving member. It is characterized in that it can be switched between a non-transmission state in which the contact between the rotating belt and the bottom surface of the seedling receiving device is released.

According to the first aspect of the present invention, the seedling receiving tool stored in the seedling storing section can be supplied onto the ground by operating the unloading mechanism and the unloading rail. When the lifting mechanism, the unloading mechanism, and the unloading rail are operated while the self-propelled body is running, continuous supply can be performed.

According to the length of the take-out rail and the height of the seedling storage part, the inclination angle of the take-out rail at the time of supply becomes steep or loose, but the take-out rail is constructed to move naturally by gravity. In such a case, if the inclination is steep, the discharge speed of the seedling receiving tool from the carrying-out rail becomes too fast, and there is a disadvantage that the seedling of the seedling receiving tool is unbalanced or falls, causing a ground contact shock which causes seedling disorder. In addition, when traveling at high speed when the unloading rail is configured as a drive type to prevent it, the discharge speed to the ground is slowed down this time,
At the time of contact with the ground, the rubbing of the seedling receiving device becomes remarkable, and the seedling disturbance may also occur.

Therefore, the carrying-out rail is configured to be switchable between a driven carrying state in which the seedling receiving device is forcibly carried and a natural carrying state in which the carrying by gravity can be carried out. By setting the apparatus in the driven and transported state, the discharge speed of the seedling receiving device at the time of contact with the ground can be appropriately set, and the seedling receiving device can be supplied onto the ground with less contact shock. Then, when the inclination of the carry-out rail is gentle, a natural conveyance state is set, so that useless driving force can be avoided while avoiding a ground contact shock. In addition, when the moving speed of the seedling supply device is relatively high, and the inclination of the unloading rail is relatively steep, it is conceivable that the natural transfer state can reduce the grounding shock more than the drive transfer state, By properly using both of these transporting states, it is possible to supply seedlings to the ground with little disturbance of seedlings regardless of the inclination angle and running speed of the unloading rail.

According to the second aspect of the present invention, the unloading rail can be driven and conveyed by inputting the power of the unloading mechanism with the unloading clutch engaged, and unloading by disengaging the unloading clutch and not inputting the power of the unloading mechanism. Since the rail is set to the natural transport state, the above-described operation according to the first aspect can be obtained without having a drive source dedicated to the unloading rail. Further, in this configuration, it is easy to match the transport speed of the seedling receiving device when the unloading rail is driven with the transport speed of the seedling receiving device receiving device in the unloading mechanism, and the constant speed is maintained from the unloading mechanism to the unloading rail. , And the seedling receiving device can be smoothly transported without clogging.

According to the third aspect of the present invention, when the pair of loops is lifted, the endless rotating band and the bottom surface of the seedling receiving device are brought into contact with each other, so that the seedling receiving device can be forcibly transported by frictional transport. When the pair of loops is lowered, the contact between the endless rotating belt and the bottom surface of the seedling receiving device is cut off, and the roller is freely conveyed by free rotation. This configuration has a driving / transporting unit provided separately from the freely rotating rollers, and has the following advantages.

That is, for example, in a natural transport state by disengagement of a clutch in a case where a belt or a chain is wound around all the rollers and a means for intermittently providing power is provided, the rollers are rotated by moving the seedling receiving device. Sometimes, all the rollers are rotated, and the inertia is increased, so that the seedling receiving device cannot be easily moved. On the other hand, according to the configuration of the present invention, when the endless rotating belt is lowered, the seedling receiving device is placed on a roller in a free rotation state which is independent for each product, and the seedling can be easily formed even with a gentle inclination due to small inertia. The receiving device can be moved, and an operation failure at the start of operation can be eliminated.

[Effect] In the seedling supply apparatus according to any one of the first to third aspects, (a) the take-out rail can be switched between the natural transfer state and the drive transfer state. Even when working conditions such as high speed and low speed are different, contact shock and rubbing of the seedling receiver can be suppressed, and seedlings can be supplied on the ground with less disturbance of seedlings.

In the seedling supply apparatus according to the second aspect, a drive source dedicated to the carry-out rail is not required, and the carrying-out mechanism and the carry-out rail can be easily driven in synchronization with each other. There are advantages to getting

In the seedling supply apparatus according to the third aspect, the functions are completely separated into the roller and the endless rotating band,
There is an advantage that the above-mentioned effect (a) is obtained in a favorable state without the operation incomplete phenomenon at the start of operation in the natural transport state.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 3 and 4, seedling storage (an example of a seedling supporting portion) 2 on which a seedling receiving device 1 such as a seedling scooping plate or a seedling raising box can be placed is provided in a plurality of upper and lower stages (10 stages). Section 3, a raising / lowering mechanism A capable of driving and raising / lowering the seedling rack 2, and a carrying-out mechanism B capable of feeding out the seedling receiving tool 1 from below the seedling storage section 3.
And a take-out rail 4 capable of transferring the seedling receiver 1 fed out by the take-out mechanism B onto the ground in a state where the seedling storage section 3 is mounted on the self-propelled body, to constitute a seedling supply device. In addition, the seedling storage section 3 is provided with a turning mechanism C that can rotate around a vertical axis with respect to a support 5 that supports the seedling storage section 3.

First, the use of this seedling supply device will be described. The seedlings W stored in the seedling storage unit 3 are arranged in a paved yard of a nursery facility for hardening treatment, or as a spare seedling for replenishment on a headland. The work of supplying the ground to the ground, such as putting it down, is mainly performed, and the work of supplying seedlings from the headland to the rice transplanter is also possible. For that purpose, there is also a pre-processing work in which the seedling receiving device 1 on which the seedlings W are placed in advance is loaded on the seedling rack 2.

As shown in FIG. 1, the ground supply operation is carried out with the seedling supply device mounted on a separately prepared self-propelled body such as a bed N of a light truck K. The seedling receiver 1 can be continuously or intermittently placed on the ground by running at a low speed while discharging and driving the seedling receiver 1 in a state where the seedling receiver 1 is grounded. At this time, a roller 33 described later is kept in a state for rolling operation.

Then, as shown in FIG.
Is parked on the headland, and the seedling storage section 3 is turned and turned sideways so that the seedling can be supplied to the rice transplanter from the end of the carry-out rail 4. At this time, a roller 33 to be described later is in a projecting state. Also, when the unloading rail 4 is driven in reverse,
The non-drive type is such that the take-out rail 4 is inclined such that the side of the seedling storage part 3 becomes lower, so that the seedling receiving tool 1 can be carried into the seedling storage part 3 from outside.

Hereinafter, the structure and function of each section will be described.

As shown in FIGS. 1 to 4, the seedling storage section 3
It is configured as a frame frame including four front and rear, left and right vertical struts 6, four front and rear upper and lower horizontal struts 7A for connecting these vertical struts 6 together, and two upper and right and left connecting struts 7B in total, Each vertical support 6 has a lifting chain 8 for raising and lowering the seedling rack 2.
And the four lifting chains 8 at the four locations,
An elevating mechanism A comprising an elevating electric motor 9 and the like for driving them simultaneously is arranged at the bottom frame 3 a of the seedling storage section 3. One seedling rack 2 is formed by laying an angle material having a substantially L-shaped cross section over the elevating chains 8 adjacent to each other in the longitudinal direction of the seedling storage part 3 in a plan view. The seedling receiving device 1 is placed so as to straddle the seedling rack 2 at both ends in the longitudinal direction. That is, ten stages of the seedling shelves 2 on which six seedling receiving tools 1 can be placed are provided, and a total of 60 mat seedlings W can be stored in the seedling storage portion 3.

As shown in FIG. 8 and FIG. 9, the posture assisting plate 10 is
The seedling shelf 2 is bolted through. Left and right seedling shelf 2,
In the placement state where the two face each other, the posture assisting plate 10 extends below the seedling shelf 2 so that the placement surface 2a does not tilt even when the weight of the seedling receiving tool 1 acts.

The transmission system of the lifting mechanism A will be described. As shown in FIGS. 4 and 5, the lifting chain 8 includes upper and lower sprockets 1.
Chain drive mechanisms 14, 14 are provided on long drive shafts 13, 13, respectively, which are wound around the upper and lower elevating chains 8, 12, which are wound on the left and right front and rear elevating chains 8, 8, respectively. I have. The same gears 15, 15 attached to the drive sprocket shafts are meshed with each chain interlocking mechanism 14, so that the front, rear, left and right elevating chains 8 are driven synchronously in the same speed and in the same direction. The gear 15 and the elevating electric motor 9 with a speed reducer are linked with the chain. The raising / lowering electric motor 9 can be driven forward and reverse, and can drive up and down the seedling rack 2.

Immediately above the elevating electric motor 9, there is provided an unloading mechanism B for receiving the seedling receiver 1 lowered by the elevating mechanism A and transferring the same in the longitudinal direction of the seedling rack 2. That is, as shown in FIGS. 10 and 11, the left and right support frames 16,
A large number of rotating rollers 18 are supported in a row in two rows by a central support plate 16 and a support plate 17 at the center.
An unloading electric motor (an example of an actuator according to claim 2) 20 for driving one of the sprockets 19a out of 9a and 19b constitutes the unloading mechanism B. That is, the protrusions 19c provided on the transport chain 19 are forcibly transported at appropriate intervals by pushing the seedling receiver 1 back. The carry-out electric motor 20 can be driven forward and reverse, and can carry out the seedling receiving device 1 from the seedling storage unit 3 to the outside and carry in the seedling storage unit 3 from the outside.

As shown in FIG. 3, FIG. 4, and FIG. 13, the cradle 5 supports the seedling storage section 3 so as to be pivotable about a vertical fulcrum P, and is stably mounted on the bed N of the light truck K. It is configured to be able to. That is, a total of four support rollers 22 (front, rear, left and right) are arranged around the fulcrum P with their rotation axes different by 90 degrees, and the rotation shaft 23 having the fulcrum P is placed on the receiving stand 5 and the seedling storage part. 3 and constitutes a swivel mechanism C. The swivel mechanism C can be swiveled by manual operation by pushing the seedling storage part 3 by hand. Of course, it may be driven and rotated by an actuator such as an electric motor.

The cradle 5 is provided with caster wheels 24 so as to be movable, and is also provided with left and right tilt plates a, a, a rear opening / closing door b, and a driving unit so as to be firmly supported by the pallet N. A strut member 25 is provided which can act on the partition wall c with the chamber. In other words, when mounted on the light truck carrier N, each strut member 25 is extended and brought into close contact with or biased against the tilting plate a or the like, so that the
That is, the seedling supply device can be fixed to the carrier N without falling down.

As shown in FIG. 5, the carry-out rail 4 has left and right support frames 4a, 4b, which can swing around a left-right fulcrum X at the base.
4a, a large number of rolling rollers 26, a carry-out belt mechanism F and a carry-out clutch G are supported.
Is swingable between a retracted state in which it stands up along the side surface and an operation state in which the tip is located near the ground.

As shown in FIG. 6 and FIG.
Is a left-right separated type that is cantilevered so as to freely rotate on the left and right support frames 4a, 4a, respectively. The carry-out belt mechanism F is a sprocket (an example of a wheel body according to claim 3) attached to each of the pair of rotating shafts 61 and 62.
A rubber belt (an example of an endless rotating band in claim 3) 65 is wound around
The pair of support stays 66, 67 are supported on the support frames 4a, 4a by a pair of left and right support stays 66, 67 so as to be swingable at a lateral fulcrum Q. The front and rear support stays 66 and 67 are connected by an interlocking rod 68, and a clutch lever 69 pivotally supported by one of the support frames 4a and a front support stay 66 are connected by a wire 70.

Further, a spring 71 for urging the front support stay 66 in the direction in which the driving sprocket 63 moves upward is provided, and upper and lower stoppers 72a, 72b for restricting vertical movement by swinging of the front support stay 66 are provided. It is. The driven pulley 73 attached to the front rotation shaft 61
A belt (an example of a transmission mechanism) 75 is wound around a drive pulley 74 mounted on the shaft of the rolling sprocket 19b in the unloading mechanism B, and the tension roller 69a at the tip of the clutch lever 69 is used for the above. A belt tension type unloading clutch G is configured to be able to tension and relax the belt 75.

The operation of the unloading clutch G will be described. To set the unloading rail 4 in the driving and transporting state so that the seedling receiving device 1 is forcibly transported, the clutch lever 69 is operated clockwise in FIG. The belt 75 is tensioned by the rollers 69a to be in a transmission state (the state shown in FIG. 7A).
Then, the wire 70 is loosened, the spring 71 pulls the front support stay 66, and the pair of sprockets 63, 64 are linked to each other to swing upward with respect to the support frame 4a until the support stay 66 comes into contact with the upper stopper 72a. In this state, the upper surface of the rubber belt 65 protrudes slightly above the top of the rolling roller 26, and the seedling receiver 1 is forcibly conveyed by contact with the bottom surface.

Next, in order to set the take-out rail 4 to be naturally transported so that the seedling receiving device 1 moves naturally by gravity, the clutch lever 69 is operated counterclockwise in FIG. 7 to retract the tension roller 69a. The belt 75 is moved to a non-transmission state in which the belt 75 is slackened (the state shown in FIG. 7B). Then
The front support stay 66 is pulled against the urging force of the spring 71 by pulling the wire 70 until it comes into contact with the lower stopper 72b.
Swing down with respect to a. In this state, the upper surface of the rubber belt 65 is lower than the top of the rolling roller 26, and the contact with the seedling receiving device 1 is cut off. Therefore, the seedling receiving device 1 moves by rolling by the freely rotating rolling roller 26.

The handle of the rolling sprocket 19b is provided with a handle 76 which can be manually operated, and the take-out mechanism B and the carry-out belt mechanism F are driven by manual operation so that the seedling receiving device 1 is driven.
Can be carried out. For example, when replenishing seedlings from a ridge to a rice transplanter, the artificial discharge operation state can be used.

As shown in FIGS. 1 and 2, a roller 33 capable of rolling and moving in contact with the ground is provided at the end of the take-out rail 4.
Is provided. The left and right rollers 33 are supported by left and right stays 34 pivotally supported by the support frame 4a so that the rollers 33 can be pivoted up and down by operating the switching lever 36 attached to the pivot shaft 35. The seedling receiving device 1 is configured to be switchable between a rolling operation state located below and a projecting operation state located above the carry-out rail 4 and capable of preventing the discharge movement of the seedling receiving device 1 from the carry-out rail 4. That is, as shown in FIG. 1, during the operation of placing the seedling receiving device 1 on the ground while running the light truck K, the roller 33 is brought into the rolling operation state and grounded. Then, as shown in FIG. 2, when the seedlings are supplied to the rice transplanter T in the field, the rollers 33 are supplied.
Is set in the protruding state to serve as a stopper for the seedling receiving device 1.

As shown in FIGS. 3 and 12, a fulcrum X provided below a side surface (hereinafter, abbreviated as an outlet side surface) of the seedling storage section 3 which is on the lower side in the discharge direction of the seedling receiving device by the unloading mechanism B. One end of each of the support frames 4a, 4a is pivotally supported, and
7, two wire ropes 28, 28 are attached to the other end. Each of the wire ropes 28, 28 is guided to a hoisting motor unit 27 by using a guide roller 29 provided on the upper part of the vertical columns 6, 6 on the outlet side surface and two lower lateral guides 30a, 30b. A winch D that swings up and down the carry-out rail 4 by forward and reverse drive of the motor unit 27 is configured.

The horizontal support 7A on each side of the entrance and the exit is formed in a substantially U-shape in plan view, and the seedling racks 2 and 3 in the second row from the bottom are formed.
It is attached to two places, that is, between the seedling racks 2 of the tier and immediately below the seedling racks 2 in the uppermost tier.
The fall prevention member 31 of the seedling receiving device 1 is erected and connected to each other. Also, a fall prevention member 3 on the entrance side surface.
At the lower end of 1, there is provided a door 32 which can swing at a fulcrum Y provided at the upper part, and an operating posture for hanging and preventing the seedling receiving device 1 from jumping out from the lower two-stage seedling rack 2, It can be freely switched to a retreating position in which the seedling receiving device 1 can be moved in and out by swinging upward by about 90 degrees from the working position.

That is, as shown in FIG.
In a state where the seedling supply device is mounted on the carrier N (the carrying-out rail 4 is in the retracted state), the opening and closing of the door 32 on the entrance side surface (rear side of the carrier) allows the seedling receiver 1 to be taken in and out. . Also, as shown in FIG.
When the is set to the operating state, the seedling receiving device 1 can be taken in and out from the exit side surface.

[Another Embodiment] As shown in FIG. 14, instead of the unloading belt mechanism F, the rolling rollers 26 of the unloading rail 4 are used.
May be moved up and down with respect to the rubber belt 65. That is, the pair of rotating shafts 78, 77 are so arranged that the left and right support plates 77, 77 for supporting the rolling rollers 26 swing together.
A set lever 81 is formed on one of the links 80 and the four links 80. That is, if the set lever 81 is operated and the top of the rolling roller 26 is positioned above the upper surface of the rubber belt 65, a natural transport state is achieved, and the top of the rolling roller 26 is positioned below the upper surface of the rubber belt 65. If it is positioned, it will be in the driving and conveying state.

The unloading rail 4 may be driven and rotated by a dedicated electric motor separate from the unloading electric motor 20 via a one-way clutch. The one-way clutch is set so that the rolling roller 26 can rotate freely when the take-out rail 4 is tilted up and the seedling is stored in the seedling storage section 3 and moved. At the time of supplying the ground, the driving conveyance state is restricted by the driving speed of the rolling roller 26 by the electric motor. When the rolling roller 26 is rotated at a higher speed than the moving speed of the seedling receiving device 1 due to gravity, a natural transport state can be realized.

[Brief description of the drawings]

FIG. 1 is an operation diagram showing an operation state of supplying seedlings to the ground.

FIG. 2 is an operation diagram showing an operation state of supplying seedlings to a rice transplanter.

FIG. 3 is a side view of the seedling supply device with a light truck mounted.

FIG. 4 is a rear view of the seedling supply device with a light truck mounted.

FIG. 5 is a plan view showing a carry-out mechanism and a base of a carry-out rail.

FIG. 6 is a plan view of an unloading rail.

FIG. 7 is a side view of a partially cutaway showing a drive structure of a carry-out rail.

FIG. 8 is a front view showing an attachment structure between a seedling rack and a chain.

FIG. 9 is a plan view showing attachment of a seedling rack and a chain.

FIG. 10 is a rear view showing a state in which the seedling receiving device is transported by the unloading mechanism.

FIG. 11 is a side view showing the structure of the unloading mechanism.

FIG. 12 is a plan view of a main part showing the structure of a winch.

FIG. 13 is a plan view showing the swirling structure of the seedling storage section.

FIG. 14 is a side view showing another structure of the carry-out clutch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seedling receiving device 2 Seedling support part 3 Seedling storage part 4 Unloading rail 20 Actuator 26 Roller 63, 64 Ring body 65 Endless rotation band 75 Transmission mechanism A Elevating mechanism B Unloading mechanism G Unloading clutch

Claims (3)

[Claims] 1. A seedling storage section provided with a plurality of upper and lower seedling support sections on which a seedling receiving device can be placed, an elevating mechanism capable of driving and raising and lowering the seedling support section, and a seedling receiving section below the seedling storage section. A carrying-out mechanism capable of dispensing the tool, and a carrying-out rail capable of transferring the seedling receiving tool fed by the carrying-out mechanism to the ground, and a drive-transport state in which the carrying-out rail is forcibly transporting the seedling receiving tool. A seedling supply device configured to be freely switchable to a natural transport state in which transfer by gravity is possible. 2. The unloading mechanism is configured to be a driving type in which the seedling receiving device is forcibly transferred by an actuator, and the power of the unloading mechanism is transmitted to the unloading rail so that the driving and transporting state is displayed. 2. The seedling supply device according to claim 1, further comprising a carry-out clutch capable of switching between a state and a state in which power of the carry-out mechanism is not transmitted to the carry-out rail so that the natural transport state appears. 3. A plurality of rotatable rollers arranged side by side in the transport direction and an endless turn capable of forcibly transporting the transport rail in the transport direction by contacting the bottom surface of a seedling receiver mounted on these rollers. A moving belt, a transmission mechanism capable of driving the endless rotating band, and an unloading clutch. The unloading clutch moves the pair of wheels around which the endless rotating band is wound up to move the endless rotating belt. It is possible to switch between a transmission state in which a rotating band and the bottom surface of the seedling receiving member are in contact with each other and a non-transmission state in which the pair of loops is moved downward to release the contact between the endless rotating band and the bottom surface of the seedling receiving device. The seedling supply device according to claim 1, wherein the seedling supply device is configured as follows.