JP2003225009A - Land grading apparatus of ground agricultural implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a land grading apparatus equipped with compact land graders for land grading of wheel ruts of a sulky rice transplanter. <P>SOLUTION: The land grading apparatus is composed by liftably and lowerably installing a seedling planting part 4 at the rear of a traveling car body 2, liftably and lowerably providing the land graders 33 and 33 in front of the seedling planting part 4 at the rear of rear wheels 6 and 6 of the traveling car body 2, composing the seedling planting part 4 so as to be stoppable at a midway position of a lowered land grading position and the topmost lifted position, keeping the seedling planting part 4 in a ground noncontact state and composing the land graders 33 and 33 so that they can be brought into contact with the ground by lowering movement thereof. The land graders 33 are not made to contact the ground even when the land graders 33 and 33 are lowered and moved. When the seedling planting part 4 is lifted to the midway position, the seedling planting part 4 is separated from the ground surface. When the land graders 33 and 33 are moved downward, only the land graders 33 and 33 can be brought into contact with the ground to eliminate the wheel ruts and carry out land grading. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leveling device for an agricultural machine for ground use. 2. Description of the Related Art A ground working device is connected to the rear of a traveling body so as to be able to move up and down freely, and a leveling tool is provided for leveling wheel marks of the traveling body. The grounding device is arranged behind the ground working device. ,
The leveling implement is configured to move up and down to a leveling operation position below the ground where the grounding implement touches the ground and to an evacuation position that has risen. [0003] The conventional leveling device of the ground working machine has a configuration in which the ground leveling device is disposed behind the ground working device, so that the longitudinal length of the body is increased, and There was a fear that the grading equipment would hit the shore or stone wall and be damaged. In view of the above, the present invention aims at reducing the size of the grounding implement by placing the grounding implement between the traveling machine body and the ground work device, shortening the up-and-down stroke of the grounding implement, and simplifying the structure. [0005] In order to solve such a technical problem, the invention of claim 1 is to provide a ground working device 4 at the rear of the traveling vehicle body 2 so as to be able to move up and down.
Body 3 in front of the vehicle body and behind the rear wheels 6, 6 of the vehicle body 2.
3 is provided so as to be able to ascend and descend, and the ground farming work device 4 is configured to be able to stop at a halfway position between the lowered leveling position and the highest position, and when the ground farming working device 4 is at the halfway position, When the agricultural work device 4 is in a non-grounded state, the terrain body 33 is configured to be capable of being grounded by its descending movement, and the ground terrain body 33 is not grounded even when the ground farming device 4 moves the terrain body 33 down in the highest position. It is characterized by the following. According to the first aspect of the present invention, when the ground farm working device 4 is stopped at a halfway position between the lowered leveling position and the highest position, the ground farm working device 4 rises to a non-ground state, and the ground farm working device 4 is lifted. Of the traveling vehicle body 2 and behind the rear wheels 6, 6 of the traveling vehicle body 2, the grounding body 33 can be grounded by moving downward. In addition, when the ground farming work device 4 is raised to the highest position, the ground preparation body 33 does not touch the ground even if the ground preparation body 33 is moved downward. According to the first aspect of the present invention, it is possible to shorten the up-and-down stroke between the lowered leveling work position of the leveling body 33 and the raised storage position, thereby simplifying the elevating structure. Moreover, even when the ground farming work device 4 is working,
When it is not necessary, the terrain body 33 can be retracted upward by moving the terrain body 33 upward, and at the time of traveling on a road or the like, the terrain body 33 is brought into contact with the ground by raising the ground farming work device to the highest position. Without such a situation, it is possible to prevent wear and breakage of the terrain body 33. [0008] Preferred embodiments of the present invention will be described below. First, the overall configuration of the seedling transplanter 1 will be described with reference to FIGS. The seedling transplanter 1 is provided with, for example, a six-row planting planting portion 4 at a rear portion of a riding traveling vehicle body 2 via a lifting link device 3 so as to be movable up and down.
The whole is configured as a riding rice transplanter. The traveling body 2 has left and right front wheels 5 and 5 and left and right rear wheels 6 and 6. The front wheel final case 8, on the left and right sides of the mission case 7 arranged at the front of the fuselage,
The left and right front wheels 5, 5 are attached to a front axle protruding laterally from a lower portion of the front wheel final cases 8, 8. The front end of the main frame 9 is fixed to the back of the transmission case 7, and the rear wheel gear case 10, 10 is supported at the center of the rear end of the main frame 9 with the horizontal rear wheel rolling shaft as a fulcrum. Then, left and right rear wheels 6, 6 are attached to rear axles that project laterally from the rear wheel gear cases 10, 10, respectively. The engine 11 is located above the intermediate portion of the main frame 9.
And rotational power is taken out from an engine output shaft protruding from the left side of the engine 11, and this rotational power is
The power is transmitted to a drive shaft of a hydraulic pump (not shown) via a belt transmission device 12, and further transmitted to the transmission case 7 via a second belt transmission device 13 which can be continuously variable. [0011] The rotational power transmitted to the transmission case 7 is shifted by a main transmission (not shown) in the case to branch out into traveling power and work machine power, and the traveling power is taken out of the front wheel final case 8,8. The transmission is transmitted to the left and right front wheels 5 and 5 via the rear wheel gear case 10 and the left and right rear wheels 6 and 6 via the rear wheel gear case 10. In addition, the power of the working machine is transmitted from the PTO shaft 14 to the seedling planting section 4 via the work machine transmitting shaft 15 which can be freely bent to drive the operating section. The upper part of the engine 11 is covered with an engine cover 16.
, And a cockpit 17 is provided on the engine cover 16. A steering wheel 18 for steering the left and right front wheels 5 and 5 is provided in front of the cockpit 17, and a spare seedling mounting table 19 for mounting replenishing seedlings is provided on both front left and right sides of the traveling vehicle body 2. The lifting link device 3 has a parallel link configuration, and
Book upper link 3a and a pair of left and right lower links 3b, 3b
It consists of. These links 3a, 3b, 3b
Is pivotally supported on a link front frame 20 erected at the rear end of the main frame 9 so that the links 3a, 3b, 3
The linked frame 21 is connected to the leading end of the link b. Then, the seedling planting section 4 is mounted on the frame 21 after linking in a freely rolling manner. A hydraulic elevating cylinder 23 is interposed between a support member fixed to the main frame 9 and a tip of a swing arm 22 integrally formed with the upper link 3a. The link 3a is turned up and down, and the seedling planting part 4 connected to the post-link frame 21 is raised and lowered in a substantially constant posture. The hydraulic lift cylinder 23 is controlled to expand and contract by a hydraulic lift valve (not shown) provided on the traveling vehicle body 2. The seedling planting section 4 is, for example, a six-row planting system. The seedling mounting stand 24 supplies seedlings one by one to a predetermined seedling outlet, and six sets of seedlings supplied to the seedling outlet in a field. , A seedling stand 24 and a transmission frame 26 for supporting and transmitting power to the seedling mounting devices 25, 25,..., A field prior to seedling planting. Central float 27a for leveling the surface, left and right float 27
b, 27c. Next, based on FIGS. 3 and 4, the left and right front wheels 5, 5 and the left and right rear wheels 6, 6 when the riding rice transplanter turns.
6 is explained. A support shaft 32 in the left-right direction is attached to a support arm 31 projecting forward from the transmission frame 26 of the seedling planting section 4, and left and right rakes (leveling bodies) 33, 33 are attached to both ends of the support shaft 32. . The left and right rakes 33, 33 are configured to be wide and are arranged in front of the seedling planting section 4 and behind the rear wheels 6, 6 of the traveling vehicle body 2, and the left and right rakes 33, 33 are arranged. 3
Numeral 3 is configured such that when the seedling planting section 4 is at the lowered planting position, it is located at a position close to the ground surface. The left and right rakes 33, 33 are provided with springs (not shown) which are urged to rotate downward, and the upper link 3a and the lower links 3b, 3b are moved up and down so that the seedling attaching section 4 is raised. Is moved up and down, an operating wire 34 pushed and pulled in connection therewith is connected to the arm portion 32a of the support shaft 32, and the left and right rakes 3 are connected with the up and down movement of the seedling placement portion 4.
3 and 33 are moved up and down to ascend and retract with respect to the leveled ground of the central float 27a and the left and right floats 27b and 27c of the seedling planting section 4, or descend and touch the ground surface. . The raising and lowering of the seedling planting section 4 and the on / off operation of the planting clutch are performed by moving a planting / elevating lever 38 (shown in FIG. 1) provided on the right side of the cockpit 17 in the front-rear direction. The planting / elevating lever 38 is moved to the “planting position”.
Is operated, the planting clutch (not shown) is engaged, and then, when the operation is further moved to the "down position" on the rear side, the seedling planting section 4 is lowered, and the "field turning position" at the rear is further moved.
Is operated, the seedling planting section 4 is stopped at a predetermined halfway position between the lowered planting position and the highest position, and further operated to the rear "upmost position", the seedling planting section 4 is moved. This is a configuration in which it is raised to the highest position. However, when the riding rice transplanter turns,
When the raising / lowering lever 38 is operated from the planting position to the field turning position, the seedling planting part 4 slightly rises and the center float 27a,
The right floats 27b and 27c are moved to a halfway up position where they are slightly lifted from the ground surface. Then, the operation wire 34 is pulled in connection with the ascending movement of the seedling planting section 4, and the left and right rakes 33, 33 are moved down to enter downward from the soil surface, and the left and right rear wheels 6, 6 are moved. Turn while erasing the wheel traces. Next, when the planting / elevating lever 38 is operated to the highest position, the left and right rakes 33, 33 are moved to the seedling planting section 4.
Together with the ground surface, the working wire 34 returns, and the left and right rakes 33 and 33 return downward by a spring (not shown).
The right rakes 33, 33 do not touch the ground. Next, another embodiment of the rolling control will be described with reference to FIGS. The traveling vehicle body 2 is provided with a vehicle body left / right inclination sensor 35 to detect the lateral inclination acceleration of the traveling vehicle body 2 at the time of planting work, and to determine the lateral inclination angle of the seedling planting section 4 by the seedling planting section left / right inclination sensor 36. , And the rolling hydraulic cylinder 37 is operated to perform rolling control so that the seedling-planting section 4 is always kept horizontal. The raising / lowering of the seedling planting section 4 and the on / off operation of the planting clutch are performed by the planting / elevating lever 3 provided on the right side of the cockpit 17.
8 (shown in FIG. 1). This planting / elevating lever 38
By operating in the front-back direction, "lift", "fix"
The seedling planting section 4 can be operated to each operation position of "down" and "planting". When the planting / elevating lever 38 is operated to "up", the seedling planting section 4 is raised. When fixed at a fixed height and operated to "fall" or "plant", the seedling planting section 4 descends. Also, the planting / elevating lever 38 is "planted".
Only when this is set, the planting clutch (not shown) is engaged. The rolling control is turned on and off in conjunction with the operation of the planting / elevating lever 38. When the seedling planting section 4 descends, the planting / elevating lever 38 moves from “fixed” to “down”.
When the seedling planting section 4 is raised, the rolling control ends when the planting / elevating lever 38 moves from "down" to "fixed". By temporarily setting the planting / elevating lever 38 to “planting” and then returning to “down”, the rolling control is turned on even when the “down” is performed, and it is possible to cope with a case where the vehicle travels in a ground contact state without planting. As shown in FIG. 8, the pressure oil from the hydraulic pump 39 is supplied to and discharged from the raising / lowering cylinder 41 via the raising / lowering control valve 40 to raise and lower the seedling planting section 4.
The air is supplied to and discharged from the left and right chambers of the rolling hydraulic cylinder 37 via the second cylinder 2 to perform rolling control. As shown in FIG. 9, the vehicle body left / right inclination sensor 35, the seedling planting part left / right inclination sensor 36, the distortion sensor 4
3 (for example, provided on a link supporting the left and right floats 27b, 27c) to the control unit 44 via the input interface, and from the control unit 44 via the output interface to the rolling control valve 42. And a drive command is output to the unload valve 65. In addition,
Instead of the distortion sensor 43, the time during which the traveling vehicle body 2 is continuously inclined in the left-right direction, or the angular velocity at which the vehicle body left-right inclination sensor 35 or the seedling planting part left-right inclination sensor 36 is inclined in the left-right direction is predetermined. Then, it may be determined that the rolling load has increased. In such a rolling control device,
When the strain sensor 43 detects that a predetermined pressure or more is applied to the left and right floats 27b and 27c, a drive command is output from the control unit 44 to the unload valve 65 via the output interface, and the unload valve 65 uses the drive command. The left and right chambers of the rolling hydraulic cylinder 37 communicate with each other to control the rolling control valve 4.
2, the rolling control is no longer effective, and the seedling planting section 4 freely rolls in accordance with the state of the ground surface, and the center float 27a and the left and right floats 27b, 27c.
The ground can contact the topsoil surface to protect the float, and the float can prevent extreme mud push and prevent the topsoil surface from being roughened. Next, the operation display device of the left and right delineation markers 45, 45 will be described with reference to FIGS. The left and right delineation markers 45, 45 are provided at the left and right ends of the transmission case 4a of the seedling planting section 4 so as to be able to stand and fall, and are urged by the springs 46, 46 to fall.
Left and right marker wires 47 linked to the raising and lowering of the seedling planting section 4;
When one of the lines 47 is drawn, the left and right line drawing markers 45 and 4 are drawn.
When one of the left and right marker wires 47, 47 is returned, and one of the left and right marker wires 47, 47 is returned, one of the left and right drawing markers 45, 45 is activated by the tension of the springs 46, 46 so as to fall over. Each time the seedling planting section 4 is moved up and down, a regulating pin (not shown)
Is operated, the operating sides of the left and right marker wires 47, 47 are switched, and the left and right delineating markers 45, 45 stand up alternately. Left and right side markers 4 for indicating a traveling reference position are provided on both front sides of the traveling body 2 of the riding rice transplanter.
8 and 48 are provided, and the left and right side markers 4
8,48 run along the planting seedling row,
Left and right side marker LEDs 49, 49 are provided on support arms of the right side markers 48, 48, respectively. As shown in FIG. 12, a planting clutch switch 50 is provided in the display circuit, and the left and right branches branched from the display circuit.
The right display circuit includes left and right relays 51 and 51, left and right flasher relays 52 and 52, and left and right side marker LEDs 4.
9, 49 are provided respectively. The left / right monitor circuit is provided with left / right marker solenoids 53, 53, left / right monitor lamps 54, 54, first left / right relays 55, 55, and a marker left / right switch for switching the left / right monitor circuit. A switch 56 is provided, and the left and right switch 56 is configured to perform a switching operation in connection with the raising and lowering of the seedling placement section 4. During the planting operation, the planting / elevating lever (not shown) is operated to the planting position, and the seedling planting section 4 is lowered to start the planting operation. Although we started planting work like this,
For example, as in the case where the operator has forgotten to turn on an auto marker on / off switch (not shown) provided in the display circuit, the planting work is started without lowering the left / right drawing markers 45, 45. There is. In such a case, when the marker left / right switch 56 is switched to the left, the left monitor lamp 54 is turned on and the left first relay 55 The relay 51 is turned on, and the left side marker LED 4
9 can be blinked to notify that the left side marker 45 has not been lowered. Therefore, the operator can recognize that the drawing marker has not descended without looking back, and turns on the forgotten auto marker on / off switch (not shown), and the left and right drawing markers move up and down. Work can be resumed. Next, referring to FIG.
The cleaning device No. 6 will be described. A fertilizer device 57 is disposed on the traveling vehicle body 2 behind the cockpit 17. The fertilizer application device 57 includes a fertilizer hopper 58, a plurality of fertilizer feeding portions 59,
.., A plurality of fertilizer guide tubes 60,... Left and right supply hoses 63, 63 from the blower 64 to, for example, front upper positions of the left and right rear wheels 6, 6.
And blows a strong wind toward the left and right rear wheels 6, 6. By driving the blower 64 and blowing strong wind from above onto the wheels by the left and right supply hoses 63, 63, the falling of mud adhering to the left and right rear wheels 6, 6 is promoted. Thus, the load on the rear wheel can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall side view of a riding rice transplanter. FIG. 2 is an overall plan view of the riding rice transplanter. FIG. 3 is a side view of the riding rice transplanter and a plan view of main parts. FIG. 4 is a front view, a side view, and a plan view of a main part. FIG. 5 is a side view of a main part. FIG. 6 is a rear view of a main part. FIG. 7 is a rear view of a main part. FIG. 8 is a hydraulic circuit diagram. FIG. 9 is a block circuit diagram. FIG. 10 is a side view of the riding rice transplanter and a perspective view of a main part. FIG. 11 is a side view and a perspective view of a main part. FIG. 12 is an electric circuit diagram. FIG. 13 is a side view. [Description of Signs] 1 seedling planter 2 traveling vehicle body 3 elevating link 3a upper link 3b lower link 4 seedling planting part (ground farming work equipment) 14 PTO shaft 15 work machine transmission shaft 20 link before frame 21 link after frame 22 swing arm 23 Hydraulic Lift Cylinder 24 Seedling Stand 25 Seedling Planting Device 26 Transmission Frame 27a Central Float 27b Left Float 27c Right Float 33 Left / Right Rake (Leveling Body) 34 Working Wire

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Masashi Ito             1 Iseki Agricultural Machinery, 1 Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture             Technology Department F term (reference) 2B034 AA03 BA02 BA03 BA06 BB01                       BC06 EA03 EA16 EB03 EB35                       JA17 JA24 JB06 JB12 JB13                       JB15 JB18                 2B063 AA06 AB01 BB01 BB45 CA04                       CA12

Claims (1)

Claims 1. An agricultural work device 4 on the rear of a traveling vehicle body 2.
Is provided so as to be able to ascend and descend, and a terrain body 33 is provided so as to be able to ascend and descend in front of the ground farming work device 4 and behind the rear wheels 6 and 6 of the traveling vehicle body 2, In the state where the ground farming work device 4 is at the halfway position, the ground farming working device 4 is in a non-ground state, and the ground adjustment body 33 is configured to be able to touch the ground by its downward movement. A ground leveling device for a ground farming machine, wherein the ground leveling body 33 does not touch the ground even when the ground leveling work device 4 moves the ground leveling body 33 down at the highest position.