JP3383035B2 - Transmission mechanism of fertilizer control machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement of a pump transmission mechanism in a fertilizer control apparatus. 2. Description of the Related Art Conventionally, a tank for storing a liquid such as a pasty fluidized fertilizer is mounted on a traveling machine body, and the liquid is fed to a fertilizing nozzle by a pump to intermittently inject soil into the soil. A fertilizer applicator has already been proposed. The pump used in this fertilizer adopts a reciprocating pump equipped with an eccentric pump shaft that can adjust the discharge amount of liquid, and discharges by adjusting the amount of swing rotation of the crank transmission mechanism that drives the pump shaft. The amount was adjusted. [0003] The above fertilizer applicator specially performs fertilizer application work such as point fertilizer application. In recent years, this work machine body has been provided with a controlling work section for spraying a chemical such as a disinfectant. Thus, the emergence of a fertilizer-controlling type working machine that can effectively utilize the working machine is desired. However, the above-mentioned conventional work equipment for point application fertilization is generally small, and it is difficult to mount a large-capacity tank or the like in terms of space. Therefore, the tank capacity is also limited to a relatively small capacity. . In addition, in order to manufacture the above-mentioned machine for simultaneous application of fertilization and control, simple and inexpensive, intermittent point-injection fertilization and continuous control and spraying work are also performed by using a pump equipped on one work machine. However, the following problems arise in relation to the discharge amount of the pump. That is, in the case of the control work, the spraying is continuous and the spraying amount is large, so the pump shaft needs to be continuously rotated. Is smaller than that in the case of the control work, so that a transmission mechanism capable of reducing the discharge amount of the pump corresponding thereto is required. Therefore, the present invention solves the above-described conventional problems by using a tank for fertilization work and control work selectively, and by configuring a transmission mechanism that combines a pump for both of the above-mentioned works. It is an object of the present invention to provide a transmission mechanism of a fertilizer control device which can be easily assembled and can be manufactured at a low cost, and can easily perform the adjusting operation of the transmission mechanism. [0004] In order to achieve the above-mentioned object, a power transmission arrangement mechanism of a management work machine according to the present invention selectively accommodates a liquid W such as a liquid fertilizer or a chemical solution in a traveling machine body 1. The tank 20 is mounted, and the liquid W is fed from the tank 20 to the fertilizer transmission system a.
In the fertilizer control apparatus provided with the fertilizer application section F and the control section S which are fed by the pump 27 switched and driven by the control system and the control transmission system b, a rotary transmission section 35a for transmitting rotational power to the pump 27, Crank transmission part 35b for transmitting dynamic power
Are provided on the same rotation shaft with a switching mechanism 35c interposed therebetween, and the rotation transmission section 35a is provided inside the body and the crank transmission section 35b is provided near the outside of the body. With the above construction, the rotation transmission unit 35a, the crank transmission unit 35b, and the like are assembled to the rotation shaft (fifth shaft) 35 at a position near the base of the rotation shaft 35 in the inner part of the body. A pulley 44a is mounted to form a rotation transmission part 35a so as to be capable of transmitting a belt, and then a clutch 33 is fitted and a swinging piece 60 is attached outside the rotation transmission part 35a to form a crank transmission part 35b. This allows the pump 27 to be used commonly for fertilization work and pest control work. In addition, the transmission mechanism is easily and efficiently assembled to the pump 27, and maintenance work such as lubrication and repair of the crank transmission part and adjustment of the pump are performed. An adjustment operation such as an amount adjustment can be accurately performed without being obstructed by other components or the like, by visually observing from the outside of the machine body. An embodiment of the present invention will be described with reference to the drawings. 1
Is a self-propelled traveling body having a loop-shaped traveling handle H extending rearward above an engine E mounted on the rear, and a transmission case 3 for supporting a rear wheel (drive wheel) 2.
The engine mounting frame 4 extending rearward and the main frame 5 extending forward are integrally connected to each other, and the fertilizing frame (upper frame) 5a of the soil fertilizing section F and the pump mounting base ( Lower frame) 5
b are integrally connected. [0007] A pair of left and right chain cases 7, 7a are fixed to the front and rear of the fertilizer application frame 5a by brackets 6, 6a and the like on both left and right sides thereof.
A front wheel stay 9 is integrally suspended from the front end of the fertilizer application frame 5a, and a pair of left and right front wheels 8 are supported via an adjustment handle 9a so as to be vertically adjustable. The mounting frame (control frame) 10 of the control section S includes a support arm 10a and a lower mounting piece 1.
0b, and the support arm 10a is attached to the fertilizer application frame 5.
a while being supported by the support shaft 10c in the middle of
Ob is fixed to a fixing piece 9a protruding from the front wheel stay 9 formed integrally with the fertilizer application frame 5a by a fixing tool 9b so as to be detachably fastened to a prevention work posture indicated by a solid line. By releasing the fixture 9b, the control frame 10 is tilted in the direction of the arrow with the support shaft 10c as a fulcrum so as to be switchable to the storage position shown by the dotted line in FIG. Reference numeral 10d denotes a hook-shaped fixture for fixing the control frame 10 along the machine body when the control frame 10 is tilted. The control frame 10 is a substantially rectangular frame on the front side, and a plurality of mounting holes 10e for the beam 15 are provided at predetermined intervals in the longitudinal direction (vertical direction).
An attachment arm (attachment member) 15 which is folded upward and pivotally fixed to both wings of the beam 15 via a pivot 15 '.
a, 15b are provided, and the mounting arms 15a, 15b have flexible spray tubes 17 having a plurality of spray nozzles 16.
However, as shown in FIG. The control frame 10 is sandwiched between the beam 15 and the holding plate 18 from the front and rear, and a height adjustment knob 19 is screwed between the two. It is set to 10e so that the mounting height of the beam 15 can be easily adjusted and fixed. Reference numeral 11 denotes an operation lever provided on the handle H for retracting the mounting arms 15a and 15b by hand operation.
5b is pivotable so that it can be folded individually or simultaneously with the pivot 15 'as a fulcrum. 13
Numeral 13 denotes a fulcrum spring for stably maintaining the operating posture of each of the mounting arms 15a and 15b.
Stoppers fixed to the lower ends of both ends of the beam 15 for receiving the overhang work postures 5a and 15b. 15f
Numerals are mounting pieces provided on the mounting arms 15a and 15b in an appropriate number, and a vinyl cover or the like is attached so as to prevent the spray from rising upward during pest control. A liquid fertilizer such as a pasty fertilizer or a chemical solution (eg, an insecticide, a bactericide, a herbicide) or the like is provided above the traveling machine body 1 (in the embodiment, at a position between the rear wheel 2 and the front wheel 8). The tank 20 for selectively storing the liquid is mounted, and the tank 20 is provided with a stirring device 21 opposed to the left and right to stir the liquid therein. Auxiliary tanks 22 and 22 are mounted in front of the tank 20 and above the front wheels 8, and by storing the washing water in the auxiliary tank 22, an auxiliary tank 22 is provided at the end of the fertilization work or the pest control work. The cleaning water in the tank 22 is jetted using a pump 27 described later, so that the cleaning in the tank 20 and the flow path is performed easily. In the soil fertilizer application section F, a pair of left and right rod-shaped fertilizing nozzles 23, 23a supported by upper and lower crankshafts 24, 24a are deformed in a circular motion by changing the phase by 180 degrees in the left and right directions. The fertilizer nozzle 23, 23a
When moving from the front to the rear, the lower end discharge port side is pierced into the soil to perform fertilization (point injection fertilization). That is, as shown in FIGS. 1 and 3, the chain cases 7, 7a support two upper and lower crankshafts 24, 24a which rotate synchronously by chain transmission, respectively. The fertilizing nozzles 23 and 23a are connected by the crank arms 25 and 25a so as to be deformed and circularly move in the vertical direction, and the crank pin 25b provided on the lower crank arm 25a is connected to the bracket provided on the fertilizing nozzles 23 and 23a. It is loosely fitted with a long hole. Reference numeral 27 shown in FIGS. 1 and 4 denotes a pump located below the tank 20 and fixed on a pump mounting base 5b. The pump 27 is transmitted from the engine E via a transmission mechanism M, and is a suction port of the pump 27. The side 27a is switchable between the tank 20 and the auxiliary tank 22 via a switching valve 28 and pipes 29a, 29b, 29c, and the discharge port 27b side is connected to accumulators 30, 30a to be described later via pipes. ing. As an example of the pump 27, a double piston pump in which left and right two plunger-type pistons reciprocate to perform a suction / discharge action is employed as an embodiment. That is, the drive shaft (pump shaft) 2 of the pump 27
7 'has an eccentric cam portion similar to the crankshaft of the engine, for example.
The left and right pistons K incorporated in the unit 7 are configured to reciprocate in opposite directions with a predetermined stroke. With this operation, the valves 55 and 55a are opened by operating the respective levers provided on the steering handle, and the valves 57 and 55a are opened.
In the case of fertilization work performed with the 57a closed, the suction port 27a
The fertilizer in the tank 20 sucked into the pump 27 via the pipes 29a, 29c from the pipes 30 ', 30'a to the pair of right and left accumulators 30, 30a from the discharge port 27b.
, And supply and accumulate through the accumulators 30,
From 30a, pressure is fed to the fertilizing nozzles 23, 23a via the intermittent valves 31, 31a so as to intermittently inject fertilizer into the soil. In the control operation performed by closing the valves 55 and 55a and opening the valves 57 and 57a, the disinfecting operation in the tank 20 sucked into the pump 27 from the suction port 27a in the same manner as described above. The liquid discharge port 27b
Are fed to the accumulators 30 and 30a, respectively, and are then pressure-fed to the injection pipe 17 via the pipes 32 and 32a, and are continuously sprayed from the spray nozzle 16 onto the crop T in the field.
The switching of the pump driving state corresponding to the fertilization and the control is performed by the switching operation of the claw clutch 33 shown in FIGS. That is, in the case of the control work, since it is necessary to continuously spray the liquid from the large number of spray nozzles 16, the pump shaft 27 'is constantly operated to increase the discharge amount of the pump 27 and increase the discharge pressure. Rotary transmission unit 35a to rotate
Thereby, the working stroke of the pump 27 is maximized, while the number of nozzles is small (2
Book) Since it is necessary to reduce the discharge amount of fertilizer compared to the above-mentioned control work, it is necessary to reduce the amount of fertilizer to be discharged, as opposed to the point injection fertilization applied to the soil at predetermined intervals. Driving is performed by a crank transmission portion 35b that swings in a reciprocating range that is equal to or less than the entire stroke, and these switching operations are performed by a switching mechanism 35c having a clutch 33. Further, the crank transmission portion 35b is provided with a metering mechanism D described later for metering the discharge amount of the pump 27 in accordance with the fertilization amount of the point application fertilizer. Reference numeral R denotes a return circuit composed of a flexible transparent tube 53a having a cleaning nozzle 53.
6a is a strainer, 58 is a breather opening. Next, the embodiment of the transmission mechanism M shown in FIGS. 4 and 6 will be described. The power from the engine E is supplied to the forward shaft 42 of the transmission 3a by the forward belt tension clutch 40 or the reverse belt tension clutch 41. Or, the belt is transmitted to the reverse shaft 43, respectively.
The rear wheel 2 moves forward or backward by switching the clutches 40 or 41. At this time, the reverse shaft 43 is
Power also works as a reverse shaft (PTO shaft)
3 to the first shaft 44, and the fertilizer transmission system in the case of fertilizer application further includes a second
To the shaft 46 and then to the third shaft 48 by the pin clutch 47
And the chain 49 rotates the fourth shaft 34 and the valve shaft 31 ′ of the intermittent valves 31 and 31 a. The rotation of the fourth shaft 34 causes the crank rod 36 to reciprocate, and the fifth shaft 35 to rotate via the clutch 33. Therefore, the pump drive chain 50 reciprocates to operate the pump 27. . The pitch between the second shaft 46 and the third shaft 48 is, for example, 20 cm and 30 c.
m), a switching device Q is provided, and the pin clutch 47
Can be switched to a plurality of stages. On the other hand, in the control transmission system in the case of the control operation, the injection clutch 45 is disengaged and the selection clutch 4
4a is switched to the control side, the first shaft 44
The power inputted to the fifth shaft 3 rotates the speed change pulley 52 via the belt 51 or 51 a, and the fifth shaft 3
5, the fifth shaft 35 is rotated, and the pump drive chain 50 is continuously driven to rotate.
Is activated. In FIG. 4, a is the first
Area used for control after input to shaft 44 (control transmission system),
b indicates a fertilization application area (fertilization transmission system), and the switching is performed by operating the clutch 33 of the switching mechanism 35c as described above. The metering mechanism D in the embodiment includes a driving-side crank arm 34a fixed to a fourth shaft (crank shaft) 34 and a fifth shaft (rotating shaft) 35, respectively, and the driven-side crank transmission. The parts 35b are connected by a crank rod 36, the pump shaft 27 'is swung by a predetermined angle (reciprocating swing) without rotating, and the pump operating stroke is adjusted to reciprocate the piston K in small steps. 2
The discharge amount of No. 7 is adjusted. Referring to FIGS. 7 and 8, the swinging piece 60 is pivotally supported at the outer end of the fifth shaft 35 so as to be freely movable and has a vertically elongated adjusting groove 61 formed therein. A fan-shaped adjusting plate 63 having an engaging projection 62 protruding inward is provided on a fifth shaft (rotating shaft) 3.
5 are integrally formed on the other side. The slide spin 64 is formed with a fitting portion 64a which is fitted and supported so as to be slidable along the adjusting groove 61, and the inner pin portion of the pin is connected to the above-described crank rod 36.
The outer pin portion is removably fitted to the ring portion 65a of the adjusting rod 65 while being flexibly connected to the end via a ball joint. An annular portion 65b provided at the other end of the adjusting rod 65 is detachably fitted to a plurality of adjusting pins 66 implanted at a predetermined interval on the outer peripheral portion of the adjusting plate 63. Reference numeral 67 denotes a fixing hole for preventing the adjustment rod 65 from coming off, and a stopper such as a clip pin is inserted so as to be freely inserted and removed. As shown in FIG. 8, the adjusting groove 61
An elongated hole is formed in the swinging piece 60 so that the center line 35P of the shaft 35 and the center line 61P of the adjustment groove 61 intersect in the vertical direction. The slide pin 64 is moved on the center line 61P. , R5 between the center P of the pin and the center 0 of the fifth shaft 35 are sequentially increased, and the center P of the slide pin 64 at each radius R1, R2,. Are formed at the center point of each of the swing angles θ1, θ2,. In addition, the slide pin 64 sequentially has a larger radius R.
, R2,..., R5 are determined by the outside of the slide pin 64 protruding toward the outside of the machine body and the appropriate number of adjustment pins 661, 66 protruding from the surface of the adjustment plate 63.
The adjustment rod 65 is removably inserted and connected to 2... 665 and connected. In other words, the first connecting member 65 connected by the adjusting rod 65 extends on the extension of the axis passing through the center O of the fifth shaft 35 at which the swing angle of the engaging projection 62 becomes the maximum swing angle θ1. Adjusting pin 661
Are sequentially increased to larger radii R2,... R5, and the adjustment pins 662,.
, And the adjusting pin 661, 662,... 665 is selected and connected to the slide pin 64 with the adjusting rod 65, thereby setting the swinging amount of the pump shaft 27 ′ and controlling the discharge amount of the liquid. In addition to accurate adjustment, the configuration and operation of the metering mechanism D can be performed easily and easily. Next, the swing transmission mechanism will be described. The swinging motion of the swinging piece 60 is transmitted to the clutch 33 by inserting and engaging the engagement projection 62 into an engagement hole 70 formed in an engagement plate 33a of the clutch 33, which will be described later.
To drive the pump shaft 27 ′ via the chain 50. At this time, if there is a displacement between the engaging projection 62 and the engaging hole 70 when the clutch 33 is engaged,
Even if 3 is moved in the direction of engagement with the arrow, the engagement may not occur. Therefore, a clutch device having the following shape is formed on the facing surface of the engagement plate 33a formed on the clutch 33. That is, as shown in FIG.
A disc-shaped meshing plate 33a formed on one side is provided with an engaging hole (clutch hole) 70 for fitting and locking the engaging projection 62, and the engaging hole 70 and the fifth shaft 35 are formed. The guide steps 71, 72, 73 having guide surfaces 71 a, 72 a, 73 a having a predetermined width are formed so as to protrude in a stepwise manner so as to be sequentially higher. As shown in FIG. 7C, the engagement protrusion 62 is swing-adjusted as described above, and an adjustment angle (swing angle) α of 180 degrees or less.
When the rocking motion is repeated, the guide surface and the guide step are engaged with each other in the following manner. FIG. 10A shows a case where the engagement hole 70 is located within the swing angle α of the engagement projection 62. In this case, the engagement projection 70 is urged by the clutch 33 in the engagement direction. The end face of the armature 62 swings and comes into sliding contact with the guide surface 71a, and fits and engages with the engaging hole 70 accurately and easily at a position coincident with the engaging hole 70. The swinging motion of the armature 62 is transmitted to the clutch 33 to drive the fifth shaft (rotating shaft) 35 to swing, and the pump shaft (crankshaft) 27 ′ of the pump 27.
Is adjusted to the swing angle α set by the above-described metering mechanism D shown in FIG. 11C to adjust the reciprocating motion of the piston K and meter the discharge amount. The biasing of the clutch 33 in the meshing direction is performed by operating the shifter arm 33b which engages with the shifter groove of the clutch 33 shown in FIG. 6, and moves the clutch 33 from the neutral position to the other direction. Of the clutch 33, the engagement hole 70 'for the rotation transmission portion formed on the other side of the clutch 33 is engaged with the engagement projection 44b provided on the rotation transmission portion pulley 44a, and the fifth shaft 35 is moved. Continuous rotation transmission can be performed. In the embodiment, the shifter arm 33b is automatically biased by a lever operation in each meshing direction by an appropriate spring (not shown), but may be manually meshed and biased. FIGS. 10B to 10D show states in which the engaging hole 70 is outside the swing angle α of the engaging projection 62, respectively.
FIG. 7B shows a case where the guide surface 71a of the clutch 33 comes into contact with the engaging projection 62 by the engagement urging of the clutch 33. In this case, the engaging projection 62 changes its end face during the swinging movement to the guiding surface. 7
1a slidably guided and abuts the guiding step 71 conveniently,
By rotating the clutch 33 in the direction of the arrow while engaging the guide step 71, the engagement hole 70 is moved to the same position as the above-described engagement hole 70 shown by a dotted line in FIG. At the time of the backward movement, the engagement hole 70 is properly fitted and engaged with the engagement projection 62, so that the fifth shaft 35 can be swingably transmitted to the predetermined swing angle α in the same manner as in FIG. . FIG. 10C shows a case where the guide surface 72a comes into contact with the engaging projection 62 by the same engagement urging as described above. The end surface is slidably guided on the guide surface 72a, and the guide step portion 72 is formed.
And the guide 33 is pushed in a state where the guide step 72 is engaged to rotate the clutch 33 in the direction of the arrow. Therefore, the guiding step 72
Is rotated by the swing angle α, and the engaging projection 62 is disengaged from the guiding step 72 at the time of its reciprocation. Therefore, the engaging projection 62 is in the same state as that shown in FIG. By being moved to the same position as the position of the engagement hole 70 in FIG. 7B, the engagement protrusion 62 further reciprocates from this state,
The engagement hole 70 is moved to the state A in the figure, and the two mesh well. FIG. 10D shows the case where the guide surface 73a contacts the engaging projection 62. In this case, the engaging projection 62
During the swinging movement, the end surface is slidably guided on the guiding surface 73a, comes into contact with the guiding step 73, and pushes and rotates the clutch 33 in the direction of the arrow while engaged with the guiding step 73.
Therefore, the guide step 73 is rotated by the swing angle α, and the engaging projection 62 is disengaged from the guide step 73 when the guide step 73 returns.
a in the same state as in FIG.
Reference numeral 0 is moved to the same position as the position of the engaging hole 70 in FIG. C, and from this state, the same operation as described above is repeated by the reciprocating swing of the engaging projection 62, thereby moving to the state in FIG. Then, the two mesh well. As described above, according to the switching mechanism (clutch device) 35c in the crank transmission portion (oscillation transmission portion) shown in the embodiment, the engagement projection that is swung at the predetermined oscillation angle α with respect to the clutch 33 in the stopped state. There is a feature that the joint transmission with the child 62 can be performed quickly and accurately. When performing the fertilizing operation, the valves 57 and 57a are opened and the valves 55 and 55a are closed as described above. Then, after the fluidized fertilizer is stored in the tank 20, the engine E is started, the forward belt tension clutch 40 of the transmission mechanism M is engaged (the reverse belt tension clutch 41 is OFF), and the machine body 1 is moved forward and point injection is performed. Engage the clutch 45. As a result, the fertilizer in the tank 20 is fed to the accumulators 30 and 30a by the pump 27 to accumulate the pressure, and intermittently opens and closes so as to open when the infusion nozzles 23 and 23a descend, so that the valve shaft 31 ′ opens and closes. The fertilizer is fed to the underground fertilizer application section F via the intermittent valves 31 and 31a which are rotated at a time, and the fertilizer is applied from the fertilizer nozzles 23 and 23a into the ground. When the control work is performed, the valve 5
7, 57a are closed, valves 55 and 55a are opened, and the injection clutch 45 is turned off. After the desired liquid is stored in the tank 20, the reverse belt tension clutch 41 is inserted and the body 1 is closed. To the tank 2
The liquid in 0 is stored in accumulators 30 and 3 by pump 27.
0a, the pressure is fed to the controlling part S via the pipes 32, 32a, and the crop T is continuously sprayed from the spray nozzle 16 of the pipe 17. After completion of the fertilization or pest control operation, the remaining amount in the tanks 20, 20 is extracted from the drain 53 into a container such as a bag, and then the switching valve 28 is switched to the cleaning side (the tank 20 side). Closed and the auxiliary tank 22 side open)
When the switching valves 55 and 55a are switched to the return circuit R side, the cleaning water in the auxiliary tank 22 is fed to the accumulators 30 and 30a by the pump 27, and then stored.
Injection nozzle 53 via feed hose 21p of return circuit R
From the tank 20, and the tank 20 and a series of flow paths can be easily washed. With the above configuration, the rotation transmission unit 35a and the crank transmission unit 35b for transmitting power to the pump 27 are assembled to the rotation shaft (fifth shaft) 35 by the rotation shaft supported on the main frame 5a. At the inner side of the body, firstly, a pulley 44a is mounted on the inner side of the fuselage to form a rotation transmission part 35a so as to be able to transmit a belt, and then a clutch 33 is fitted and inserted. 60, and constitutes a crank transmission portion 35b, and a metering mechanism D including an adjusting rod 65 and the like is provided to constitute a series of transmission mechanisms. Therefore, a relatively large and simple rotating transmission member, such as a belt and a pulley, is attached to the rotating shaft so as to be located inside the fuselage, and the same rotating shaft can be seen from the outer portion of the fuselage which is easily visible outside. 35, a crank transmission member composed of various kinds of link members and the like is assembled, so that these assemblings can be performed easily and efficiently, and maintenance work such as lubrication and repair of the crank transmission portion and pump operation. An adjustment operation such as a metering adjustment can be performed easily, safely and efficiently without being interrupted by other components from the outside of the machine body. According to the present invention, as described above, the liquid for fertilization or pest control is selectively stored in the tank, and the pump is commonly used for fertilization and pest control. The transmission mechanism is mounted on a rotating shaft such that a rotary transmission section composed of a relatively large and simple transmission member such as a pulley or a belt is located inside the body, and the same rotation is performed from outside the rotation transmission section. Since the crank transmission portion composed of the link member and the like is assembled on the shaft, the assembly can be easily and efficiently performed, and the fertilizer control device can be manufactured at low cost. In addition, maintenance work such as lubrication and repair of the crank transmission part, and adjustment work of the metering adjustment mechanism of the pump can be visually observed from the outside of the fuselage without being interrupted by other components. And the like can be suppressed and safe work can be performed efficiently.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a fertilizer control device provided with an embodiment of the present invention. FIG. 2 is a plan view of FIG. 1; FIG. 3 is a front view of FIG. 1; FIG. 4 is a system diagram showing a transmission mechanism. FIG. 5 is a circuit diagram of pest control. FIG. 6 is a plan view showing a main part of the transmission mechanism. FIG. 7A is a front view of a crank transmission unit. (B) is a side view of the same figure. FIG. 8 is a front view showing the operation of FIG. FIG. 9A is a plan view showing a configuration of a clutch and an engagement projection. (B) is a side view of the clutch. (C) is a side view which shows the effect | action of an engagement protrusion. 10 (A) to 10 (D) are action diagrams showing a state in which a clutch and an engagement projection are engaged. FIG. 11A is a plan view of a pump. (B) is a side view of the same figure. (C) is a sectional view of an essential part showing a state of a pump and a piston. FIG. 12 is a schematic front view showing a control operation. [Description of Signs] 1 Body (traveling body) 5 Main frame 20 Tank 27 Pump 34 Fourth shaft (crank shaft) 35a Rotary transmission unit 35b Crank transmission unit 35c Switching mechanism 35 Fifth shaft (rotating shaft) 36 Crank rod 44a Pulley 60 Rocking piece a Pest control transmission system b Fertilizer application transmission system W Liquid F Fertilizer application part S Pest control part D Metering mechanism

Continuation of the front page (72) Inventor Yoshiki Uba, 667-1, Iya-cho, Oaza, Higashiizumo-cho, Yatsuka-gun, Shimane Prefecture Inside Mitsubishi Agricultural Machinery Co., Ltd. (56) References JP-A-4-135410 (JP, A) JP-A-6 181612 (JP, A) Japanese Utility Model Application 6-7414 (JP, U) Japanese Utility Model Application Hei 5-20521 (JP, U) Japanese Utility Model Application 62-111318 (JP, U) (58) Field surveyed (Int.Cl) . ^7, DB name) A01C 23/00 - 23/04 A01M 7/00 A01M 17/00

Claims (1)

(57) [Claims 1] A traveling machine body is provided with a tank for selectively storing a liquid such as a fluid fertilizer or a chemical solution, and a liquid is supplied from the tank to a fertilization transmission system and a control transmission system. In a fertilizer control device that feeds a fertilizer application section and a control section by a pump that is switched and driven by a pump, a rotary transmission section that transmits rotational power of a control transmission system to the pump, and a crank that transmits rocking power of the fertilization transmission system. A fertilizer control device characterized in that a transmission unit and a switching mechanism are provided on the same rotation shaft with a switching mechanism interposed therebetween, and the rotation transmission unit is provided on the inner side of the body and the crank transmission unit is disposed closer to the outside of the body. Transmission mechanism.