JP4296657B2 - Rice transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the arrangement of various operation levers in a seedling transplanter.
[0002]
[Prior art]
For seedling transplanters such as rice transplanters, a main transmission lever that switches the shift position of the gear-type main transmission, a sub-transmission lever that adjusts the speed of the belt-type or hydraulic sub-transmission, and the on / off of the seedling planting section A plurality of operation levers such as a planting elevating lever for elevating and a sensitivity adjusting lever for adjusting the sensitivity of elevating control are provided. In many conventional seedling transplanters, the auxiliary transmission lever and the planting lift lever are arranged on the same left and right sides with respect to the cockpit.
[0003]
[Problems to be solved by the invention]
When the seedling transplanting machine is turned at the time of dredging or the like, the seedling planting part is raised to stop seedling planting, and the moving speed of the machine is set to be lower than the normal planting operation speed. In general, seedling transplanters are equipped with an automatic deceleration mechanism that automatically decelerates the moving speed when the seedling planting section is raised, and there is no need to operate the sub-shift lever at the start of turning, but it is manual at the end of turning. The sub-shift lever is operated to return to the normal working speed. This is so that immediately after the turn, the low speed can be maintained while performing the course adjustment so as to align the seedling planting strips.
[0004]
Therefore, at the end of turning, the planting lift lever is operated from the planting “cut” position to the planting “on” position, and after adjusting the speed, the sub-shift lever is immediately operated to increase the speed. At this time, if the planting lift lever and the sub-shift lever are provided on the same left and right sides, the hand holding the planting lift lever must be quickly switched to the sub-shift lever after the operation is completed. May cause confusion.
[0005]
It is an object of the present invention to prevent the above-mentioned disruption of lever operation so that anyone can easily perform an accurate lever operation. In order to achieve this, the following configuration is adopted. .
[0006]
[Means for Solving the Problems]
That is, seedling transplantation machine of the present invention is a seedling transplantation machine provided with NaeUe mounting portion on the rear side of the vehicle body, for driving the input and off and the elevation of NaeUe mounting portion on the right side of the steering wheel finger lever provided while operable gripping the steering wheel for the main shift lever for achieving an adjusted aircraft movement speed to the left of the front cover provided in front of the cockpit provided Rutotomoni, Misao Tateseki Another shift lever is arranged on the left side of the main shift lever, and the main shift lever is operated from the front to the rear at the shift positions of “road speed”, “neutral”, “planting speed” and “reverse speed”. Furthermore, a stopper for restricting the main speed change lever from being shifted to the “road speed on the road” and a handle for rotating the stopper are provided, and the handle protrudes above the operation panel. When in the state of restricting the “upward traveling speed”, the handle is configured to be retracted inward from the outer surface of the operation panel, and further, the operation position is set to “up”, “neutral”, “down” on the right side of the cockpit. It is characterized by the arrangement of a retractable planting lift lever in which each position of “planting” is set .
[0007]
In this seedling transplanter, an operating lever for adjusting the moving speed of the airframe is provided on the left and right other side of the front cover provided in front of the cockpit, and the operating lever is shifted to “road speed on the road”. A stopper is provided to restrict the movement of the stopper, and the stopper can be switched between a restricted state and an unregulated state by rotating the handle. In the restricted state, the stopper handle is operated. It is preferable to be configured so as to be retracted inward from the outer surface of the panel.
[0008]
In this way, the operation lever for driving on / off and raising / lowering of the seedling planting part is arranged on the left and right side (left and right side of the steering wheel and cockpit), and the operation lever for adjusting the moving speed of the aircraft is provided. By arranging the operation lever of the seedling planting part and the operation lever for shifting to the left and right by arranging them on the left and right other side, there is no mistake in the operation of the two systems of levers, and the lever operation is accurate and without confusion Can be done. In addition, the stopper that restricts the operation lever from shifting to “road speed” is retracted inward from the outer surface of the operation panel when the operation lever is in the restricting state. There is an advantage that the handle of the stopper does not get in the way when walking.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a rice transplanter as a seedling transplanter. In this rice transplanter 1, a 6-plant seedling planting part 4 is mounted on the rear side of the traveling vehicle body 2 via a lifting link device 3 so as to be movable up and down. In addition, on the left and right sides of the front portion of the traveling vehicle body 2, preliminary seedling platforms 5, 5 are provided so as to be rotatable between an expanded state and a stored state.
[0010]
The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and rear wheels 11 and 11 as drive wheels, and a transmission case 12 is disposed in the front part of the airframe. Front wheel final cases 13 and 13 are provided on the left and right sides of the front wheel, and the front wheels 10 and 10 are attached to a front wheel axle that protrudes outwardly from a front wheel support portion that can change the direction of the front wheel final case. Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel gear case 18, with a rear wheel rolling shaft provided horizontally in the front and rear sides at the rear left and right center of the main frame 15 as a fulcrum. The rear wheels 11 and 11 are attached to a rear wheel axle that is supported in a freely rolling manner and projects outwardly from the rear wheel gear cases 18 and 18.
[0011]
The engine 20 is mounted on the main frame 15, and the engine rotational power extracted to the engine output shaft 20a is first transmitted to the drive shaft 22a of the hydraulic pump 22 by the belt transmission device 21, and then from the hydraulic pump drive shaft 22a. The transmission is transmitted to the transmission case input shaft 12a by the belt-type auxiliary transmission 23. A main clutch is provided at the input portion of the mission case 12.
[0012]
The rotational power input to the mission case 12 is shifted by the main transmission and then separated into traveling power and external power. A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. A rear wheel brake device is provided on each of the left and right sides of the transmission system to the rear wheels. Further, the external take-out power is transmitted to a planting clutch 25 provided at the rear part of the traveling vehicle body 2, and then transmitted to the seedling planting unit 4 through a planting transmission shaft 26.
[0013]
The upper part of the engine 20 is covered with an engine cover 28, and a seat 29 is installed thereon. A front cover 30 in which various operation mechanisms are accommodated is provided in front of the seat 29, and a steering handle 31 for steering the front wheels 10, 10 is provided above the front cover 30. Further, various operating tools described later are provided in the periphery of the seat 29 and the front cover 30.
[0014]
The elevating link device 3 has a parallel link configuration and includes one upper link 40 and a pair of left and right lower links 41, 41. The links 40, 41, 41 are pivotally attached to the link base frame 42 erected on the rear end of the main frame 15 on the base side, and the connecting frame 43 is pivotally connected to the tip side. And the seedling planting part 4 is connected with the connection frame 43 so that rolling is possible. An elevating hydraulic cylinder 45 is interposed between a support member fixed to the main frame 6 and a tip of a swing arm 44 formed integrally with the upper link 40, and the upper link is expanded and contracted by hydraulically extending the cylinder. 40 rotates up and down, and the seedling planting part 4 moves up and down while maintaining a substantially constant posture. The lifting hydraulic cylinder 25 is controlled by a hydraulic valve 46 attached to the link base frame 42.
[0015]
The seedling planting part 4 has a structure of six-row planting, and a seedling stand 51 on which seedlings for six stripes are placed on a transmission case 50 that also serves as a frame, and seedlings on the seedling stand are planted on the paddy surface. Six sets of planting devices 52,... Are paired with a pair of left and right drawing markers 53, 53 for drawing the left and right centers of the aircraft path in the next stroke to the topsoil surface during planting work. A center float 54 and side floats 55, 55 for leveling are provided below the seedling planting section 4, and when these floats are in contact with the mud surface of a paddy field, each float moves the mud surface. Glide while leveling. The center float 54 is also a grounding body for detecting irregularities on the surface of the paddy field. During planting work, the control valve 46 is driven based on the irregularities on the surface of the paddy field to detect the seedling. The seedling planting part 4 is controlled to be raised and lowered so that the planting depth is always kept constant.
[0016]
The traveling vehicle body 2 is provided with the following operating tools. In the figure, reference numeral 60 is a main transmission lever for operating the main transmission, 61 is a throttle lever for operating the throttle valve, 62 is a planting lift lever for operating on / off and raising / lowering of the seedling planting portion, and 63 is A sub-shift lever for operating the sub-transmission device, 64 is a sensitivity adjustment lever for adjusting the raising / lowering control sensitivity of the seedling planting section, and 65 has a function for automatically raising the seedling planting section when the main shift is reverse. A back lift lever 66 to be turned off is a main clutch pedal for turning on and off the main clutch, and 67L and 67R are rear wheel brake pedals for individually operating the left and right rear wheel brake devices.
[0017]
The main transmission lever 60 is disposed on the left side surface of the front cover 30 and is provided with shift positions of “road traveling speed”, “neutral”, “planting traveling speed”, and “reverse traveling speed” from the front to the rear. Since it is dangerous to accidentally become “road speed on the road” during planting work, it is preferable to provide a stopper 70 that restricts shifting to “road speed on road” as shown in FIG. The stopper 70 is manually rotated by grasping a handle 70a protruding above the operation panel 71 to restrict the “road speed on the road” (indicated by a solid line) and not to be regulated (indicated by a chain line). Is to be switched. Since the handle 70a is retracted to the inner side of the outer surface of the operation panel 71 when the "road speed" is restricted, the operator can use the front cover 30 to replenish seedlings during work in the field. The stopper handle 70a does not get in the way when walking on the left side.
[0018]
The planting lift lever 62 is provided in the vicinity of the right side of the steering handle 31, and is operated with a finger while holding the steering handle 31 with the right hand. For example, the positions of “raising”, “neutral”, “lowering”, and “planting” are set, and the lifting hydraulic valve 46 and the planting clutch 25 are operated according to the lever operating position. When the planting lift lever 62 is “neutral”, the hydraulic valve 46 is in a neutral state. When it is “raised”, the hydraulic valve 46 is switched to the side where the seedling planting part 4 is raised, and when it is “lowered” The hydraulic valve 46 is switched to the side where the attaching portion 4 is lowered. When the planting lifting / lowering lever 62 is set to “planting”, hydraulic pressure is applied so that the seedling planting unit 4 is always kept at a constant height according to the change in the height of the seedling planting unit 4 with respect to the ground detected by the center float 54. The valve 46 is switched. The sensitivity of this elevation control is adjusted by a sensitivity adjustment lever 64. When the planting lift lever 62 is operated to “planting”, the planting clutch is engaged, and when it is operated other than “planting”, the planting clutch is disengaged.
[0019]
The sub-transmission lever 63 is provided on the left side of the cockpit 29 so that the sub-transmission device 23 can be operated in multiple stages, for example, four stages. Normally, the speed is set to a higher speed range than the “minimum speed” when going straight on the field, and the “minimum speed” when turning. In addition to the operation of the auxiliary transmission lever 63, an automatic reduction mechanism is provided that decelerates the auxiliary transmission 23 to the “minimum speed” in conjunction with the raising of the seedling planting portion 4.
[0020]
Regarding the lever arrangement of this rice transplanter, the main transmission lever 60 and the auxiliary transmission lever 63, which are operation levers for adjusting the moving speed of the machine body, are arranged on the left side of the left and right center of the cockpit 29, and drive the seedling planting part. The planting elevating lever 62 and the sensitivity adjusting lever 64 which are operation levers for turning on / off and elevating are arranged on the right side of the left / right center of the cockpit 29. The throttle lever 61 is an operation lever for adjusting the airframe moving speed, but this throttle lever 61 is an exception because it is not used during planting work.
[0021]
During the planting operation, the rice transplanter 1 holds the seedling planting unit 4 at a height at which the floats 54, 55, and 55 touch the ground, drives the seedling planting unit 4, and moves the machine body at an appropriate speed. Thereby, a seedling is planted on the mud surface leveled by the floats 54, 55, 55. If planting has been performed to the end, the planting lifting / lowering lever 62 is rotated upward to stop and raise the seedling planting unit 4. As the seedling planting portion 4 is raised, the sub-shift is automatically decelerated to the “minimum speed”. Then, the steering handle 11 is operated to turn the aircraft.
[0022]
When the turning is finished, the planting lift lever 62 is operated with the finger of the right hand while holding the steering handle 11, and the planting operation is resumed. Immediately after the turn, the steering handle 11 is operated so as to align the course of the aircraft with the line drawn on the field by the drawing marker 53, and alignment is performed. When the alignment is completed, the sub-shift lever 63 is operated with the left hand to increase the moving speed before turning. Thus, since the right hand remains holding the steering handle 11 from the start of the turn to the end of the turn, the turn can be performed safely and reliably. Further, since the planting elevating lever 62 and the auxiliary transmission lever 63 are operated by left and right hands, a quick lever operation can be performed.
[0023]
FIG. 4 shows a configuration in which simple speed increasing means is provided in the vicinity of the planting lift lever 62. In this configuration, the planting lift lever 62 is provided so as to be operated up and down, and when operated downward, it is planted “on”, and when operated upward, it is “planted”. Then, when the button is pressed once on the meter panel surface below the planting lift lever 62, the sub-shift is increased, and when the button is pressed again or the maximum speed is reached, the sub-shift is stopped. Is provided. If the acceleration button 72 is at this position, the acceleration button 72 can be pushed as it is when the planting lift lever 62 is rotated downward to resume the planting operation when the turn is completed. For this reason, the speed increasing operation after the alignment can be performed in a series of operations, and the operability at the end of the turn is further improved.
[0024]
The rice transplanter of the first example is of a type equipped with a mechanical type planting elevating lever as a sub-transmission device, a belt type transmission as an operating lever for driving on / off and raising / lowering of the seedling planting part It is. In addition to the type of the first example, a type equipped with a hydraulic continuously variable transmission as an auxiliary transmission, a microcomputer-controlled finger lever as an operation lever for driving on / off and raising / lowering of a seedling planting part And mechanical planting lift levers. About these types, it is good to set it as the lever arrangement | positioning shown in FIG.5, FIG.6, FIG.7.
[0025]
In the second example shown in FIG. 5, the main transmission lever 60 is on the left side of the front cover 30, the belt-type transmission auxiliary transmission lever 63 is on the left side of the cockpit 29, and the microcomputer-controlled finger lever 75 is on the right side of the steering handle 31. A mechanical planting lift lever 62 is disposed on the right side of the cockpit 29.
[0026]
In the third example shown in FIG. 6, the main transmission lever 60 is on the left side of the front cover 30, the auxiliary transmission lever 76 for the hydraulic continuously variable transmission is on the left side of the cockpit 29, and the mechanical planting is in the vicinity of the right side of the steering handle 31. A sensitivity adjustment lever 64 is disposed on the right side of the lift lever 62 and the cockpit 29.
[0027]
The fourth example shown in FIG. 7 is a main transmission lever 60 on the left side of the front cover 30, a sub-transmission lever 76 for a hydraulic continuously variable transmission on the left side of the cockpit 29, and a microcomputer-controlled finger near the right side of the steering handle 31. A mechanical planting elevating lever 62 is arranged on the right side of the lever 75 and the cockpit 29.
[0028]
Also in the second to fourth examples, the main transmission lever 60 and the auxiliary transmission levers 63 and 76 that are operation levers for adjusting the airframe moving speed are arranged on the left side of the left and right center of the cockpit 29, The planting lift lever 62, the finger lever 75, and the sensitivity lever 64, which are operation levers for driving on / off and raising / lowering of the seedling planting portion, are arranged on the right side of the left / right center of the cockpit 29. Therefore, there is no operational confusion between the two operating levers, and accurate lever operation can be performed.
[0029]
The relationship between the two levers in the seedling transplanter including the microcomputer-controlled finger lever 75 and the mechanical planting lift lever 62 as in the second and fourth examples is as follows (see FIG. 8). .
[0030]
As in the case where the planting lift lever 62 is provided independently as in the first and third examples, the operation positions of “raising”, “neutral”, “lowering”, and “planting” are set. . In the illustrated example of FIG. 8, these operation positions are positioned by a combination of a positioning cam 78 and a roller 79 engaged with the cam. A motor 81 for rotating the position of the planting lift lever 62 and a sensor 81 for rotating the planting lift lever 62 is provided. When the finger lever 65 is operated, the planting lift lever 62 moves to a corresponding position. It has become.
[0031]
When the planting elevating lever 62 is manually operated, the planting elevating lever 62 is slid in the axial direction of the lever shaft 62a and the connection between the sensor 80 and the motor 81 is released. In addition, the planting lift lever 62 can be extended and contracted, and the planting lift lever 62 can be shortened so as not to interfere with other operations during planting operations that are hardly operated.
[0032]
FIG. 9 shows yet another lever arrangement. In the fifth example, the main transmission lever 60 is on the left side of the front cover 30, the auxiliary transmission lever 63 (or 76) is on the left side of the cockpit 29, the mechanical planting lift lever 62 is on the right side of the cockpit 29, and the steering handle 31. A sensitivity adjustment lever 64 is disposed on the panel surface in the vicinity of the right side.
[0033]
When the sensitivity adjustment lever 64 is provided at the above position, as shown in FIG. 10, the control sensitivity becomes “sensitive” as the lever is operated forward, and the control sensitivity becomes “insensitive” as the lever is operated backward. Good. The reason is that the rice transplanter is generally used in a relatively soft field, so that the sensitivity adjustment lever 64 can be operated by moving the operation position on the “sensitive” side suitable for the soft field forward. This is because it is possible to prevent hitting the knee of the child.
[0034]
Moreover, the lever load increases as the sensitivity adjustment lever 64 is operated to either side due to the mechanism, but if the lever load side is the “insensitive” (farm field) side, it is easy to become familiar with human sensitivity. Operation mistakes are less likely to occur.
[0035]
Furthermore, lever positioning recesses 82a,... Of the lever guide 82 are provided on the left and right inner sides with respect to the lever 64 so that the sensitivity adjustment lever 64 does not shift when the sensitivity adjustment lever 64 is accidentally touched when the throttle lever 61 is operated. Is good.
[0036]
【The invention's effect】
As described above, in the seedling transplanting machine according to the present invention, the operation lever for driving on / off and raising / lowering of the seedling planting portion and the operation lever for adjusting the moving speed of the machine body are divided and arranged on the left and right. Therefore, it is difficult for the lever operation to be confused. Moreover, since the finger lever is an operation lever for performing right side seedling planting unit driving the input and switching and lifting provided on the steering wheel is operable while gripping the steering wheel, while gripping the steering wheel Two levers can be operated simultaneously with both left and right hands. Furthermore, since the planting lift lever can be expanded and contracted, the planting lift lever can be shortened so as not to interfere with other operations during planting work.
[Brief description of the drawings]
FIG. 1 is a side view of a rice transplanter adopting a first example of lever arrangement.
FIG. 2 is a plan view of the rice transplanter shown in FIG.
3A is a plan view of a main transmission lever, and FIG. 3B is a side view thereof.
FIG. 4 is a perspective view of a planting elevating lever and a speed increasing button.
FIG. 5 is a diagram showing a second example of lever arrangement.
FIG. 6 is a diagram showing a third example of lever arrangement.
FIG. 7 is a diagram showing a fourth example of lever arrangement.
FIG. 8 is a perspective view of a planting lift lever.
FIG. 9 is a diagram showing a fifth example of lever arrangement.
10A is a plan view of a sensitivity adjustment lever, and FIG. 10B is a side view thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rice transplanter 2 Traveling vehicle body 3 Elevating link apparatus 4 Seedling planting part 23 Subtransmission 60 Main transmission lever 62 Planting elevating lever 63 Subtransmission lever 64 for belt type transmission Sensitivity adjustment lever 75 Finger lever 76 Hydraulic stepless transmission Sub gear lever for equipment

Claims (1)

A seedling transplantation machine provided with a seedling planting unit with a seedling mounting table on the rear side of the vehicle body, a steering finger lever for performing drive input and off and the elevation of NaeUe mounting portion on the right side of the steering wheel provided operable while holding the handle, Rutotomoni provided main shift lever for achieving an adjusted aircraft movement speed to the left of the front cover provided in front of the cockpit, another shift to the left of the steering Tateseki A lever is disposed, and the main speed change lever is a lever that is operated from the front to the rear to shift positions of “road speed”, “neutral”, “planting speed”, and “reverse speed”, and the main speed change lever Is provided with a stopper that regulates the shift to the “road speed on the road” and a handle for rotating the stopper. The handle protrudes above the operation panel and regulates the “road speed on the road”. Do In the state, the handle is configured to be retracted to the inside of the outer surface of the operation panel, and further, on the right side of the cockpit, as the operation positions, “up”, “neutral”, “down”, and “planting” positions A seedling transplanting machine, which is provided with a retractable planting lifting lever set with a

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