JPH0130962Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electric management machine that is equipped with an electric motor and uses the driving force of the motor to perform various management tasks such as plowing, ridge-building, etc.
Conventionally, as shown in Japanese Utility Model Publication No. 45-9049, there has been a technique in which a resistance rod whose lower end is inserted into the cultivated soil is provided in a height-adjustable manner.

However, in the prior art, the resistance rod is moved up and down by manual operation by the operator, so the resistance rod is moved up and down only when the operator feels a change in the tilling load, which makes it difficult to maintain proper running. In addition to not being able to easily obtain resistance, it is necessary to move the resistance rod up and down while moving, which forces the operator to operate in an unnatural posture, which can easily cause the machine's posture to become unstable. There was an operational problem.

However, in the present invention, a tilling rotary installed on an axle is driven by an electric motor, traveling and tilling is performed by the rotation of the rotary, and the height of a resistance rod whose lower end is plunged into the tilled soil can be freely adjusted. The electric power management machine provided includes a running resistance adjustment motor that moves the resistance rod up and down to adjust the height, and adjusts the running resistance based on the detection result of a load sensor that detects a load change of the electric motor. The present invention is characterized in that it is configured to automatically change the running resistance due to the resistance rod by controlling the operation of the adjustment motor.

Accordingly, the running resistance adjusting motor is automatically operated in response to a change in the load of the electric motor, and the running resistance is automatically changed by moving the resistance rod up and down, so that an appropriate running resistance can be easily obtained. The load on the electric motor can be maintained below a set value, the tilling rotary can be driven efficiently and functionally by preventing burnout of the electric motor, and the operator can maintain a good driving posture and maintain a stable machine posture. It is possible to easily improve the control function of the electric motor and the like, as well as improve handling and operability.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

Fig. 1 is an overall side view of the electric power management machine according to the present invention, and Fig. 2 is a plan view of the same. In the figure, 1 is a commutator electric motor that rotates at high speed, and 2 is a transmission case that fixedly supports the motor 1. A power deceleration case, 3 is a chain case which is an axle case that fixes the deceleration case 2 on the upper end in a forward tilted manner, 4 is a tilling rotary which is an attachment that is pivotally supported on the lower end of the axle case 3, and 5 is the axle case 3 a fender that is removably fixedly supported by and covers the upper area of the rotary 4;
A steering handle 9 is connected to the rear of the deceleration case 4 via a mounting plate 7 and a handle holder 8;
12 is a resistance rod connected to the rear of the handle holder 8 via a mounting plate 10 and a support box 11 so as to be adjustable in height; 12 is a control box 13 connected to the motor 1;
This is a work switch which is a motor operating switch that connects via the switch 12 and applies alternating current power to the motor 1 appropriately, and when the switch 12 is turned on, the motor 1 is driven to rotate the rotary 4 and plowing work is performed. The aircraft is configured to run.

As shown in FIGS. 3 to 5, the deceleration case 2 is made up of left and right case bodies 2a and 2b that are formed separately and fixed together through bolts 14. A bolt 15 is attached to the rear end side of the right case body 2b. Through the motor 1
At the same time, the upper end of the front axle case 3 is connected to the front end side of the right case body 2b via a bolt 16 and a flange 17.

In addition, a bracket 1 is installed in the middle of the axle case 3.
8 and bolts 19, and the housing 20 is attached to the lower end of the case 3.
An axle 21 is supported through the axle 21, and a tilling claw 23 and a guide ring 24 of the rotary 4 are attached to the axle 21 through an auxiliary cylinder shaft 22. Left and right electromagnetic side clutches 25a and 25b are incorporated into the axle 21, and magnets 28a and 28b of the clutches 25a and 25b are activated via a switch 27 by operating left and right side clutch levers 26a and 26b provided on the handle 6. The clutches 25a and 25b are turned on and off by energizing or de-energizing as appropriate.
When operated, the left and right tilling claws 23 and guide wheels 24 disposed on the left and right sides of the axle case 3 are rotated or stopped.

Further, inside the deceleration case 2, there are a small diameter timing pulley 30 attached to the output shaft 29 of the motor 1, and large and small diameter timing pulleys 32 and 33 attached to the first counter shaft 31, respectively.
Large and small diameter timing pulleys 35 and 36 respectively attached to the second counter shaft 34, large diameter timing pulley 38 attached to the deceleration output shaft 37, and each of these pulleys 30, 32, 33, 35, 36,
Timing belt 39, 4 stretched between 38 and 38
0 and 41, and is configured so that the output shaft 37 is rotated at a reduced speed when the electric motor 1 is driven.

Furthermore, the axle case 3 is provided with a small diameter sprocket 42 attached to the output shaft 37, a large diameter sprocket 43 attached to the axle 21, and a chain 44 that stretches between these sprockets 42, 43. 37 is configured to be transmitted to the axle 21 at a reduced speed.

On the other hand, the support box 1 to which the resistance rod 9 is attached
1 includes a vertical feed mechanism 45 that adjusts the height of the resistance rod 9.
A pinion 47 that meshes with a rack 46 formed on the resistance rod 9 is connected to a deceleration servo motor 48 fixed outside the box 11, and the servo motor 48 is driven in forward and reverse directions to reduce the speed. It is configured to adjust the height of the resistance rod 9. Note that 49 is a guide tube that slides and guides the resistance rod 9 up and down.

FIG. 6 shows an electric circuit diagram of the vertical feed mechanism 45, in which the work switch 12 and a load for detecting changes in the load of the motor 1 are included in the connection circuit between the AC 100V power supply 50 and the electric motor 1. A rectifier 53 is installed in the comparator 52, while a sensor 51 is installed in the comparator 52.
At the same time, a reference power supply circuit 56 consisting of a transformer 54 and a rectifier 55 incorporated in the control box 3 and a load reference setter 57 are inputted to the comparator 52, and the load reference setter 57 is inputted to the comparator 52. Based on the output difference between the sensor 57 and the sensor 51, the servo motor 48 is appropriately driven in the forward or reverse direction.

The present embodiment is configured as described above, and when the tilling load by the rotary 4 becomes large during the current tilling operation and its current consumption increases, the sensor 51
The detected value also becomes large, and an output difference occurs between it and the reference setting value of the setting device 57, and the comparator 52 outputs a normal or reverse signal for the servo motor 48, and the motor 48 is driven in the normal or reverse direction. . As a result,
The resistance rod 9 is moved upward via the pinions 47 and 46 to reduce running resistance due to the rod 9, thereby reducing the tilling load on the rotary 4. and the output difference between the detected value of the sensor 51 and the reference setting value of the setting device 57 disappears;
When the standard tillage load state is reached, the motor 4
Reference numeral 8 is for stopping the drive and holding the resistance rod 9 at that height.

On the other hand, contrary to the above, the tilling load by the rotary 4 becomes small during the tilling operation, and its current consumption decreases, and the difference between the detected value of the sensor 51 and the reference setting value of the setting device 57 is different from that mentioned above. When an opposite output difference occurs, the comparator 52 outputs a signal to the servo motor 4.
8 is output, the motor 48 is driven to rotate in reverse or forward direction, and the resistance rod 9 moves downward. As a result, the running resistance due to the resistance rod 9 increases, the tilling load on the rotary 4 increases, and the tilling load is adjusted to the reference state. In this way, when the work load on the rotary 4 changes, the resistance rod 9
is adjusted up and down to control the workload to a constant state. Although the above-described configuration has been shown to be automatically controlled, the vertical movement of the resistance rod 9 may be adjusted by reading changes in the current value of the motor 1 using a measuring device, for example.

Further, in the case of this configuration, since it has electromagnetic left and right side clutches 25a and 25b,
For example, if the direction of the handle 6 can be rotated 180 degrees, that is, it can be reversed back and forth, the left and right clutches 25 can be connected by a simple means such as replacing the connector.
A and 25b can be mutually switched and their directions can be easily matched. Moreover, since the clutches 25a and 25b are turned on and off by operating the switch 27, the clutches are sharp and reliable.

As is clear from the above embodiments, in the present invention, the tilling rotary 4 provided on the axle 21 is driven by the electric motor 1, and the rotation of the rotary 4 performs traveling and tilling, and the lower end side is placed in the tilled soil. An electric management machine in which the height of the resistance rod 9 to be inserted can be freely adjusted is provided with a running resistance adjustment motor 48 that adjusts the height by moving the resistance rod 9 up and down, and detects changes in the load of the electric motor 1. Based on the detection result of the load sensor 51, the running resistance adjustment motor 48 is operated and controlled to automatically change the running resistance due to the resistance rod 9. Since the running resistance adjustment motor 48 automatically operates and moves the resistance rod 9 up and down to automatically change the running resistance, an appropriate running resistance can be easily obtained and the electric motor 1
The load of the electric motor 1 can be maintained below the set value.
The tilling rotary 4 can be driven efficiently and functionally by preventing burnout, etc., and the operator can maintain a good driving posture and work with a stable machine posture, and the control functions of the electric motor 1 etc. can be improved. In addition, it has practical effects such as easily improving handling and operability.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is an overall side view, Fig. 2 is a plan view of the same, Fig. 3 is a sectional explanatory side view of the main part, and Fig. 4 is a side view of the same plane. FIG. 5 is an explanatory diagram showing the driving state, and FIG. 6 is an electrical circuit diagram of the main part. 1...Electric motor, 9...Resistance rod, 45...Vertical feed mechanism.

Claims (1)

[Scope of utility model registration request] A tilling rotary 4 provided on an axle 21 is driven by an electric motor 1, and traveling and tilling are performed by the rotation of the rotary 4, and a resistance rod 9 whose lower end side plunges into the tilled soil is provided so as to be freely adjustable in height. The electric management machine is equipped with a running resistance adjusting motor 48 that moves the resistance rod 9 up and down to adjust the height, and the above-mentioned An electric power management machine characterized by being configured to automatically change the running resistance by the resistance rod 9 by controlling the operation of the running resistance adjusting motor 48.