JPH07184450A - Trackway type self-propelled tea leaf plucker - Google Patents

Abstract

PURPOSE:To increase motor torque by a small-sized dynamo and to enable charging of a buttery and cell starting of an engine by making the most of power of the dynamo and the buttery effective. CONSTITUTION:This trackway type self-propelled tea leaf plucker is equipped with a trackway truck capable of traveling on rails laid along a tea tree ridge, the trackway truck is provided with a goliath frame and a plucking device having reaping part and a tea leaf storage part is vertically movably attached to the goliath frame. The goliath frame is loaded with an AC generator 6, a buttery 9 and a control box 7 and an AC traveling motor 23 is drivably attached to at least rear wheels of the trackway truck. The AC generator 6 is connected through a rectifier 60 for converting AC to DC to the buttery 9 so as to charge the buttery. The rectifier 60 and the buttery 9 are connected to the traveling motor 23 in such a way that an electric current is usually sent only from the rectifier 60 to the traveling motor 23 and sent from both the rectifier 60 and the buttery 9 to the traveling motor in a time requiring an electric current for starting and rising.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a track type self-propelled machine for performing various operations such as plucking, pruning, and controlling a tea leaf of a tea tree ridge while self-propelled on a trajectory provided along the tea tree ridge planted in rows. More specifically, the present invention relates to a driving method when a wheel is driven by an electric power of a generator.

[0002]

2. Description of the Related Art A track-type self-propelled tea leaf plucking machine of this type is disclosed in, for example, JP-A-4-320613 and Japanese Patent Application No. 5-30513.
There is 264800. Explaining the outline of this device, a track carriage is movably provided on a track of a pair of rails laid between the left and right ridges of the tea ridge, and a gate-shaped frame is provided on the track trolley so as to straddle the tea ridge. A plucking device, which is erected and has a cutting section and a tea leaf storage section over the entire surface of the tea tree ridge, is vertically movably mounted on the gate-shaped frame. The track vehicle travels by electrically driving the drive wheels by a traveling motor. The plucking device moves up and down by the operation of the lifting motor, the mowing unit operates the balincan blade by the mowing motor to pluck the tea leaves, and the tea leaf storage unit operates the blower fan by the engine to store the plucked tea leaves in the bag. Is composed of.

Conventionally, in the electric circuit of each of the above motors, a generator, a battery, and a control box are mounted on a portal frame. The generator is an AC generator that is small and lightweight, has a large output, does not require rectification, is suitable for high-speed rotation, and does not require maintenance management such as brushes. So each motor
An AC motor is used corresponding to the AC generator, and is connected so as to directly drive the motor by the power source of the AC generator. In addition, it is connected so that the microcomputer of the control box can be operated by the battery charged in advance.

[0004]

By the way, in the above-mentioned prior art, the circuit is simplified because it is a combination of an AC generator and a motor, but there are the following problems. That is, since the motor can use only the power source of the generator, the starting torque of the motor is uniquely determined by the power generated by the generator. For this reason, there is no problem in traveling on a flat road or a downhill, but if the slope becomes large and the load due to the weight of the bogie increases in the case of an uphill, the starting torque may be insufficient and the vehicle may not be able to move forward. As a solution to this,
It is possible to mount a large generator to increase the output, but in this case, the weight of the generator also increases, and the balance of the entire bogie deteriorates. In addition, there is a problem in that it is required to increase the strength of the portal frame on which the generator is mounted and the rails of the track.

In view of such a point, the present invention effectively utilizes the electric power of the generator and the battery to increase the motor torque with a small generator, and further enables charging of the battery and starting of the engine cell. The purpose is to do.

[0006]

In order to achieve this object, according to the present invention, a rail car is movably provided on a rail laid along a tea tree ridge, and a gate-shaped flake is installed on the rail car. An orbital type self-propelled tea leaf plucking machine in which a plucking device having a mowing part and a tea leaf storage part is vertically movable is mounted on a frame-shaped frame, in which an AC generator, a battery, and a control box are mounted, and at least a track truck A drive motor for direct current is installed on the wheels of the vehicle so that the AC generator is connected to charge the battery through a rectifier that converts alternating current to direct current, and the rectifier and battery are supplied to the drive motor, usually only from the rectifier. However, it is characterized in that connection is made so that power is supplied from both the rectifier and the battery when necessary.

[0007]

In the present invention having the above-mentioned structure, an AC generator having a small size, a light weight, and a large output is used as a generator, and a DC motor having a large starting torque is used for traveling. When the AC generator is operated, AC power is converted into DC by the rectifier and the battery is charged. Also, when traveling on a normal flat road, only the DC power from the rectifier is supplied to the DC traveling motor, so that the track truck travels reliably. Is stored in. On the other hand, when starting or going uphill, when power is supplied to the traveling motor from both the rectifier and the battery, a large current flows according to the load and the motor torque increases. It is possible to reliably travel and perform plucking work.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 2 and 3, the overall configuration of the track-type self-propelled tea leaf plucking machine will be described. First, a large number of tea tree ridges are planted in rows, and the rails 1 of the tea leaf plucking machine A are laid between the ridges of the tea tree ridges. Therefore, a pair of rails 1 on the left and right of one tea tree ridge is used as a track, and rail cars 2 are separately mounted on the rails 1 so that the rail trolleys 2 cross the tea tree ridge. The gate-shaped frame 3 is installed. Then, the plucking device 4 provided with the cutting portion B and the tea leaf storage portion C over the entire surface of the tea tree ridge is mounted on the gate-shaped frame 3 so as to be vertically movable.

The track truck 2 has a truck frame 2a extending forward and backward along the rail 1, and front wheels 21 and rear wheels 22 are provided in front of and behind the truck frame 2a. A traveling motor 23 is mounted immediately above the rear wheel 22, and the traveling motor 23 is connected to the rear wheel 22 via a chain transmission system 24 so as to drive forward and reverse and to travel forward and backward. Front and rear wheels 21, 22
In Fig. 1, the left side of Fig. 1 is restricted from moving in the left-right direction, but the right side is mounted so as to be movable to any position in the left-right direction by the angular axis and the coil spring. It has a structure that can accommodate a wide range of.

The wheel support frames 2b and 2c having the front and rear wheels 21 and 22 are fastened to the front and rear ends of the bogie frame 2a by two bolts 25 and 26 which are vertically spaced from each other. In this case, the upper bolt hole is formed in an arcuate elongated hole centering on the lower bolt 26, and the wheel support frames 2b and 2c are arbitrarily rotated and fixed to fix the front and rear wheels 21 and 22. The right or left side can be tilted to the left or right with respect to the rail axis. Accordingly, when there is a height difference between the left and right rails 1 on a sloping ground, the right or left side of the front and rear wheels 21, 22 can be tilted to cope with the height difference.

Connection columns 2 are provided before and after the bogie frame 2a.
7 and 28 are provided upright, and the four columns 3a to 3d of the gate-shaped frame 3 are fitted and connected to the connection columns 27 and 28.
And the bolts 28b of the columns 3a to 3d and the connection columns 27,
The height of the portal frame 3 can be adjusted by selecting and fastening any of the bolt holes 28a of 28.

The gate-shaped frame 3 includes four columns 3a to 3d.
The lateral members 3e and 3f and the joint members 3g and 3h are connected between the two to form a gate shape. The four columns 3a to 3d are provided with lifting bodies 5a to 5d each having a holding roller, and the plucking device 4 moves up and down inside the portal frame 3 in a state in which these lifting bodies 5a to 5d are connected as one set. It is installed as possible. An elevating motor 51 is mounted on the top of the left front column 3a, and the elevating motor 51 is connected to the elevating body 5a and the plucking device 4 via a spiral shaft and a slider which are not shown in the column 3a. The drive system from the lifting motor 51 is
It is also routed to the front right column 3c through the inside of the front lateral member 3e, and similarly the lifting body 5c of the column 3c and the plucking device 4 are pulled.
And is configured to vertically move the plucking device 4 together with the left and right lifting bodies 5a to 5d by the forward and reverse movements of the lifting motor 51.

In the plucking device 4, a cutting section B is provided in the front part of the machine frame, and tea leaf storage sections C are arranged in front of and behind the cutting section B.
The cutting section B has a clipper blade 4a over the entire surface of the tea tree ridge.
Is curved with the same arc curvature as the upper surface of the tea tree ridge,
The hair clipper blade 4a is reciprocated by the power of the engine 4b to pluck tea leaves.

The tea leaf storage section C has an engine 4b at both left and right ends.
The blower fan 4c driven by is arranged, and this blower fan 4c communicates with the wind guide duct 4d arranged immediately before the hair clipper blade 4a. A large number of blowing nozzles 4e are opened behind the air guide duct 4d so as to convey the tea leaves picked by the pressure air backward. Immediately after the hair clipper blade 4a, rectangular cylindrical bag receiving portions 41, 42 are arranged by dividing them into left and right by a rotating brush 44 driven by a central brush motor 45 and a partition frame 43. The bag mounting tables 46 and 47 are extended rearwardly and incline upward.
By connecting the left and right bags to the back of the bag receiving portions 41, 42 while being placed on the bag placing tables 46, 47, the tea leaves conveyed by the pressure air are stored in the bags.

Limit switches 11 and 12 are provided near the front end of the track vehicle 2 and the rear wheel 22, respectively. The limit switch 11 automatically stops at the end position when the plucking work is completed while the track carriage 2 is moving forward. The limit switch 12 controls so that when the bag is full after a predetermined distance is picked up and the vehicle travels backward, the track carriage 2 is initially returned at a high speed and then automatically stopped at a predetermined position at a low speed.

The electrical operating system will be described. First, a generator 6, a control box 7 with an antenna, and a battery 9 are mounted on the portal frame 3. The control box 7 is a control panel 7a as shown in FIG.
An operation button 7e for instructing the plucking position from the raised position, an operation switch 7c for adjusting the height of the plucking position, a traveling button 7f for starting the plucking work while traveling forward, a button 7g for instructing a high speed back, an emergency stop button 7h, Work changeover switch 7k, operation knobs 7m, 7n for adjusting work speed,
A counter 7p or the like for setting the plucking distance is provided.

The electric circuit will be described with reference to FIG. The generator 6 is an AC generator having a small size and a large output, but the motors 23, 45, 51 are DC motors having a large starting torque. Then, the AC generator 6 is connected to a rectifier 60 that converts AC to DC, and is connected from the rectifier 60 to the DC traveling motor 23, the lifting motor 51, and the brush motor 45 via switches 7c and 7f, respectively. Further, the rectifier 60 is connected so as to charge the battery 9 via a diode 61 that prevents backflow and a regulator 62, and is connected so that the battery 9 supplies power to the microcomputer 66 and the like of the control box 7.

On the other hand, in order to increase the starting torque of the traveling motor 23 on the uphill, it is effective to temporarily utilize the power source of the battery 9 in addition to the AC generator 6. Therefore, the battery 9 is connected to the traveling motor 23 via the high load switch 63, and this high load switch 63 is also provided in the control box 7. Further, the battery 9 is the engine 4
It is possible to start the cell by connecting to the starter motor 64 of b via the ignition switch 65.

Next, the operation of this embodiment will be described. First, the front and rear wheels 21, 2 of the rail cars 2 on the left and right of the tea leaf plucking machine are attached to the starting ends of the left and right rails 1 of the tea tree ridge to be plucked.
Engagement with 2 enables traveling. When the AC generator 6 is operated, AC power is generated, and this AC is converted into DC by the rectifier 60 and output. Then, the DC power is constantly charged to the battery 9 by the regulator 62,
Even if the switch is operated, consumption of battery power is prevented by the diode 61. Then, power is supplied from the battery 9 to the microcomputer 66 of the control box 7 to enable various controls. When the ignition switch 65 of the engine 4b is turned on, the battery 9 drives the starter motor 64 to easily start the cell of the engine 4b, thus completing the preparation for the plucking operation.

At the time of plucking work, the control box 7
By turning on the switch 7c, the DC power from the rectifier 60 is supplied to and driven by the lift motor 51, whereby the plucking device 4 is set to a predetermined cutting height. Then, when the traveling switch 5f is turned on, the engine 4b rotates at a high speed to generate pressured air, the hair clipper blade 4a is driven, and the rotating brush 44 is rotated by the brush motor 45. Further, the DC power of the rectifier 60 is supplied to and driven by the traveling motor 23, and the track carriage 2 travels forward along the rail 1 at a low speed.

Then, when the track truck 2 advances, tea leaves are plucked by the hair clipper blades 4a of the cutting section B, and the plucked tea leaves are conveyed backward by the pressure air discharged from the blowing nozzle 4e of the air duct 4d. , Left and right bag receiving portions 41, 42
It is automatically stored in the bag set in. In this way, the tea leaves are continuously picked up and stored in the bag as the track truck 2 travels forward.

On the other hand, when the track carriage 2 is traveling, a larger amount of current flows through the direct-current traveling motor 23 so that the direct-current traveling motor 23 is reliably driven. Further, when a large starting torque is required, such as when starting, or when the vehicle is climbing uphill and the inclination becomes large and the load due to the weight of the bogie increases and the traveling speed becomes slow, the high load switch 63 is connected. . Then, the traveling motor 23 is supplied with not only the DC power from the rectifier 60 but also the power of the battery 9, so that a larger current flows according to the load and the motor torque increases. Therefore, it becomes possible for the track car 2 to travel reliably and to perform plucking work even when starting or going uphill. Then, when the high load switch 63 is turned off, the battery 9 is charged by the DC power of the rectifier 60 so as to supplement the power consumption, so that a predetermined power capacity is always secured.

Although the embodiment of the present invention has been described above, the configuration of the electric circuit is not limited to the embodiment.

[0024]

As described above, according to the present invention,
In a track-type self-propelled tea leaf plucking machine, an AC generator, a battery, and a control box are mounted on a gate-shaped frame, and a DC traveling motor can be installed on at least the wheels of the track truck to convert the AC generator to DC. Since it is configured to connect to charge the battery through the rectifier, the rectifier and the battery are connected to the traction motor, usually only from the rectifier, and when necessary, from both the rectifier and the battery. Due to the characteristics of the DC motor, the traveling performance in normal traveling is improved, and the motor torque is increased at the time of starting or going uphill, and the traveling performance is greatly improved. For this reason, it can be applied to tea tree ridges on land with a large slope, and the range of use of the tea leaf plucking machine is expanded. Since a small and lightweight AC generator can be used, the weight balance of the trolley is improved, and it is not necessary to increase the strength of the rail or the like, which is advantageous in terms of cost and the like. Since the electric power of the existing generator and the battery is effectively used, the battery of which the structure is simplified is charged by the DC power of the rectifier, so that a predetermined electric power capacity can always be secured and the utilization efficiency is increased. Since it is possible to start the cell of the engine with the battery power source, the startability of the engine is improved.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an electric circuit of an embodiment of an orbital type self-propelled tea leaf plucking machine according to the present invention.

FIG. 2 is a perspective view showing the overall configuration of a track-type self-propelled tea leaf plucking machine.

FIG. 3 is a side view of the same.

FIG. 4 is a front view showing a control panel of a control box.

[Explanation of symbols]

 1 rail 2 track car 3 portal frame 4 plucking device 6 AC generator 7 control box 9 battery 22 rear wheel 23 running motor 60 rectifier A tea leaf plucking machine B cutting part C tea leaf storage part

Claims (2)

[Claims] 1. A plucking device having a rail truck laid along a tea tree ridge so that a track truck can travel, gate-shaped flakes are installed on the rail truck, and a gate-shaped frame having a mowing section and a tea leaf storing section. In an orbital self-propelled tea leaf plucking machine that is vertically movable, an AC generator, a battery, and a control box are mounted on the gate frame, and a DC traveling motor is provided on at least the wheels of the railcar so that the AC motor can be driven. Connect the generator to charge the battery through a rectifier that converts alternating current to direct current so that the rectifier and battery are powered by the traction motor, usually only from the rectifier, and from both the rectifier and the battery when needed. An orbital self-propelled tea leaf plucking machine characterized by being connected. 2. The track-type self-propelled tea leaf plucking machine according to claim 1, wherein the battery is also connected so as to supply power to the control box and the starter motor of the engine.