Transplanter

Abstract

To provide a transplanter which can perform the excellent seedling transplanting work by properly activating a control mechanism that intermittently activates a planting tool in order to solve such a problem that such a situation that the control mechanism of a planting clutch is not properly activated and planting of seedlings cannot be properly performed occurs in the transplanter which has the planting clutch that controls transmission of the driving force for intermittently moving the planting tool up / down.SOLUTION: A switching operation device 500 switches a regulating plate notch 403 provided in a regulating plate 400 between a position to which a rotation arm 300 enters and a position where entry is regulated. A guide part 602 having a guide groove 602a to which the rotation arm 300 enters when the regulating plate notch 403 in the regulating plate 400 is switched to the position to which the rotation arm 300 enters is provided on a machine frame side. A curved protrusion 603 protruding into the guide groove 602a is provided in the guide part 602. A portion 302b of the rotation arm 300 is located in the guide groove 602a all the time.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a transplanter such as a vegetable seedling transplanter.

Background Art

[0002] Conventionally, a transplanter such as a vegetable seedling transplanter having a planting clutch that controls the transmission of driving force for intermittently raising and lowering a planting tool is known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The engagement of the planting clutch is switched by the rotation arm entering and rotating into a regulating plate notch formed in a regulating plate that moves by the operation of a solenoid. When the planting clutch is disengaged, the rotation arm contacts near the regulating plate notch of the regulating plate and its rotation is restricted.

[0005] However, due to the assembly error and distortion of the rotation arm, when the solenoid is operated, the rotation arm faces a position deviated from the regulating plate notch, and the rotation arm cannot properly enter the regulating plate notch to engage the planting clutch, resulting in a problem that the seedlings cannot be properly planted.

[0006] In view of the above-described conventional problems, an object of the present invention is to provide a transplanter that can properly operate a mechanism for intermittently operating a planting tool and perform good seedling transplanting work.

Means for Solving the Problems

[0007] In the transplanter provided with a planting tool lifting clutch 200 that controls the transmission of the driving force for intermittently lifting and lowering the planting tool 131, a rotating arm 300 that turns on and off the planting tool lifting clutch 200, a regulating plate 400 that regulates the movement of the rotating arm 300, and a switching actuator 500 that intermittently switches the regulating plate 400, the switching actuator 500 switches the regulating plate notch 403 provided in the regulating plate 400 between a position where the rotating arm 300 enters and a position where entry is restricted. When the regulating plate 400 is switched to a position where the rotating arm 300 enters the regulating plate notch 403, a guide portion 602 having a guide groove 602a into which the rotating arm 300 enters is provided on the machine frame side. A curved surface protrusion 603 that protrudes into the guide groove 602a is provided on the guide portion 602, and a part 302b of the rotating arm 300 is always positioned within the guide groove 602a.

[0008] According to the invention described in claim 1, since the switching actuator 500 switches the regulating plate notch 403 provided in the regulating plate 400 between a position where the rotating arm 300 enters and a position where entry is restricted, and when the regulating plate 400 is switched to a position where the rotating arm 300 enters the regulating plate notch 403, a guide portion 602 having a guide groove 602a into which the rotating arm 300 enters is provided on the machine frame side, and a curved surface protrusion 603 that protrudes into the guide groove 602a is provided on the guide portion 602, and a part 302b of the rotating arm 300 is always positioned within the guide groove 602a, the rotating arm 300 can appropriately enter the regulating plate notch 403 of the regulating plate 400 to turn on the planting tool lifting clutch 200, and good seedling transplanting work can be performed.

[0009] Also, since a curved surface protrusion 603 that protrudes into the guide groove 602a is provided on the guide portion 602, the rotating arm 300 is guided by the curved surface protrusion 603 with little frictional resistance, and the rotating arm 300 operates appropriately.

[0010] The invention according to claim 2 is the transplanter according to claim 1, which is configured by a stopper plate 302 that rotatably fixes a rotating arm 300 to a regulating plate 400 in a telescopically adjustable manner with a base arm 301, a long hole 303 formed in the upper part of the base arm 301, and a plurality of pins 305 inserted into the long hole 303.

[0011] According to the invention described in claim 2, in addition to the operation and effect of the invention described in claim 1, since the rotating arm 300 is configured by a stopper plate 302 that is telescopically adjustable with respect to the regulating plate 400 by a long hole 303 formed in the upper part of the base arm 301 and a plurality of pins 305 inserted into the long hole 303, the stopper plate 302 can be telescopically adjusted with respect to the regulating plate 400 by the long hole 303, that is, the position with respect to the regulating plate 400 when retracting from the regulating plate notch 403 can be telescopically adjusted. Further, since it is fixed after position adjustment by a plurality of pins 305 inserted into the long hole 303, the inclination accuracy of the rotating arm 300 is improved, and the stability of the operation timing of the rotating arm 300 can be achieved.

[0012] The invention according to claim 3 is the transplanter according to claim 1 or claim 2, wherein a switching actuator 510 of a switching actuator device 500 and a regulating plate 400 are connected by a connecting pin 420, a biasing member 410 that biases the regulating plate 400 in a predetermined direction is attached to the outer periphery of the switching actuator 510, a locking portion 404 that receives one end portion of the biasing member 410 is formed at one end portion of the regulating plate 400, and the inner periphery of the biasing member 410 is disposed at a position in contact with the connecting pin 420.

[0013] According to the invention described in claim 3, in addition to the operational effects of the invention described in claim 1 or claim 2, the switching operation body 510 of the switching operation device 500 and the regulating plate 400 are connected by a connecting pin 420, a biasing member 410 that biases the regulating plate 400 in a predetermined direction is mounted on the outer periphery of the switching operation body 510, and a locking portion 404 that receives one end portion of the biasing member 410 is formed at one end portion of the regulating plate 400. Therefore, displacement and detachment of one end portion of the biasing member 410 with respect to one end portion of the regulating plate 400 can be prevented, the regulating plate 400 can be appropriately moved, and it is possible to prevent the planting tool lifting clutch 200 from engaging at an inappropriate timing.

[0014] Further, since the inner periphery of the biasing member 410 is disposed at a position in contact with the connecting pin 420, the biasing member 410 serves as a retaining means for the connecting pin 420 at a position covering the outer both end portions of the connecting pin 420, durability and safety can be improved, and it is possible to prevent the connecting pin 420 from coming off and interrupting the planting operation.

[0015] The invention described in claim 4 is a transplanter according to any one of claims 1 to 3, in which a convex portion 611 for restricting the mounting position of the switching operation device 500 is provided on a support frame 610 that supports the switching operation device 500.

[0016] According to the invention described in claim 4, in addition to the operational effects of the invention described in any one of claims 1 to 3, a convex portion 611 for restricting the mounting position of the switching operation device 500 is provided on the support frame 610 that supports the switching operation device 500. Therefore, when the switching operation device 500 is fixed to the support frame 610, the position is restricted by the convex portion 611 and the assembly position is determined at a predetermined position. Also, after assembly, it is supported by the convex portion 611 and movement is blocked. Therefore, the durability and operability of the switching operation device 500 are maintained well.

[0017] The invention described in claim 5 is a transplanter according to any one of claims 1 to 4, in which a through hole 531 is provided at a position corresponding to the switching operation body 510 of the switching operation device main body portion 520 of the switching operation device 500, and the through hole 531 is closed with a dust-proof member 532.

[0018] According to the invention described in claim 5, in addition to the effects of the invention described in any one of claims 1 to 4, a through hole 531 is provided at a position corresponding to the switching operation body 510 of the switching operation device main body 520 of the switching operation device 500, and the through hole 531 is blocked by a dustproof member 532. Therefore, by removing the dustproof member 532 and spraying a cleaning spray from the through hole 531 toward the switching operation body 510, maintenance can be performed without disassembling the switching operation device main body 520. Thus, the maintainability is improved.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

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Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Embodiments for Carrying Out the Invention

[0020] With reference to the drawings, embodiments of the present invention will be described in detail.

[0021] The same applies hereinafter, but some components may not be shown in the drawings, or may be shown perspectively or omitted.

[0022] (A) First, with reference to FIGS. 1 to 10, the configuration and operation of the transplanter according to the present embodiment will be specifically described.

[0023] While describing the operation of the transplanter according to the present embodiment, the transplanter operation control method of the invention related to the present invention, which is realized by a controller or the like, will also be described.

[0024] The transplanter according to the present embodiment includes a left and right steering handle 102 at the rear of the vehicle body 101, and while traveling with a traveling device 120 having a pair of left and right driven front wheels 121 and driving rear wheels 122 using the driving force transmitted from the engine 110, a transplanter such as a vegetable seedling transplanter that plants a transplant with a planting device 130 having a planting tool 131.

[0025] The planting tool lifting clutch 200 is a clutch that controls the transmission of the driving force for intermittently lifting and lowering the planting tool 131. The rotating arm 300 is an arm that turns on and off the planting tool lifting clutch 200. The slide plate 400 as a regulating plate is a plate that can regulate the movement of the rotating arm 300. The solenoid device 500 as a switching operating device is a device that intermittently slides the slide plate 400. The stay member 600 is a member having a wall portion 601 through which the slide plate 400 passes.

[0026] The rotating arm biasing spring 310 is a spring that biases the rotating arm 300 so that the rotating arm 300 moves to the driving force transmission on position.

[0027] The slide plate 400 as a regulating plate is supported by the stay member 600, and the rotating arm 300 functions as a so-called regulating arm.

[0028] Since the rotating arm biasing spring 310 functions as a rotating arm return spring that moves the rotating arm 300 to the driving force transmission on position, the rotating arm 300 is normally biased toward the slide plate 400 by the biasing force of the rotating arm biasing spring 310 and thus contacts the slide plate 400. However, when the slide plate 400 is moved by the solenoid device 500, it enters the slide plate notch 403 as a regulating plate notch which is a passing cut groove.

[0029] The rotating arm return cam mechanism 800 is a mechanism that intermittently moves the rotating arm 300 by cam contact against the biasing force of the rotating arm biasing spring 310 so that the rotating arm 300 returns from the driving force transmission on position to the driving force transmission off position.

[0030] The slide plate 400 that functions as a slider stopper of the plant spacing control unit is not a magnetic member but a non-magnetic member such as a SUS member (stainless steel material) that is not magnetized with the operation of the solenoid. Since the loss of solenoid attraction force hardly occurs and a large decrease in solenoid attraction load is not caused, solenoid attraction is hardly inhibited at all. As a result, the planting tool lifting clutch 200 can be set to the engaged state at the set timing, and stable plant spacing control is realized.

[0031] (B) Next, the configuration and operation of the transplanter of the present embodiment will be described more specifically.

[0032] The slide plate 400 and the solenoid plunger 510 as a switching operating body of the solenoid device 500 are connected using a connecting pin 420 and a connecting pin insertion hole 401 provided through both of them.

[0033] The connecting pin insertion hole 401 has a play of the connecting pin 420 in a direction orthogonal to the sliding direction of the slide plate 400.

[0034] The connecting pin insertion hole 401 is formed as a hole on the side of the slide plate 400, but it may also be formed as a hole on the side of the solenoid plunger 510. When such holes are formed on both sides, it is sufficient that the play of the connecting pin 420 is in at least one of the holes.

[0035] Variations in the height of the solenoid device 500 due to dimensional variations in the component height direction are absorbed, and even if the slide plate 400 is inclined obliquely, almost no interference occurs with the stay member 600. Since loss of solenoid attraction force hardly occurs and solenoid attraction is hardly inhibited, stable stock gap control is achieved.

[0036] The slide plate 400 is provided with a slide pin insertion slit 402 into which a slide pin 430 provided on the side of the vehicle body 101 is inserted.

[0037] The slide pin insertion slit 402 is on the opposite side of the solenoid device 500 with respect to the stay member 600.

[0038] When the slide plate 400 is in the rotation arm movement restriction position, there is a play of the slide pin 430 in the slide pin insertion slit 402.

[0039] The width of the play of the slide pin 430 when the slide plate 400 is in the rotation arm movement non-restriction position may be zero.

[0040] The width of the play of the slide pin 430 when the slide plate 400 is in the rotation arm movement restriction position is larger than the width of the play of the slide pin 430 when the slide plate 400 is in the rotation arm movement non-restriction position.

[0041] The width of the slide pin insertion slit 402, which is the insertion hole part of the slide pin 430 that functions as a regulation of the slide plate 400, is large when the slide plate 400 is in the standby position before solenoid suction, and small when the slide plate 400 is in the operating position after solenoid suction. Since the slide pin insertion slit 402 is not a uniform long hole but such a so-called oblique long hole, the dimensional variation in the vertical direction at the standby position is absorbed, and the positioning accuracy of the slider stopper operation is improved, so that stable stock gap control is realized.

[0042] Also, when the solenoid device 500 operates due to energization and the solenoid plunger 510 is attracted, or when the energization to the solenoid device 500 stops and the solenoid plunger 510 returns to the standby position, that is, the position before energization, a slight space is generated between the slide pin 430 and the slide pin insertion slit 402, so that the slide pin insertion slit 402 is prevented from wearing and deforming due to contact with the slide pin 430.

[0043] The slide plate 400 is provided with a slide plate notch 403 into which the rotating arm 300 is inserted.

[0044] The slide plate notch 403 is formed from the lower side edge portion of the slide plate 400. The upper side edge portion of the slide plate 400 bulges at the position of the slide plate notch 403.

[0045] Since the upper shape of the slide plate notch 403, which is the slider stopper relief notch, is thickened for strength improvement, the slide plate 400 abuts against the slide pin 430 and stops due to solenoid suction, but deformation of the slide plate 400 caused by the application of repeated impact loads is suppressed.

[0046] The slide pin 430 is a pin with its base fixed to the stay member 600. The tip of the pin penetrates through the slide pin insertion slit 402 with a washer 431 interposed therebetween, and the slide plate 400 is prevented from coming off by a split pin 432.

[0047] Therefore, since the slide pin 430 is integrally formed with the stay member 600, adjustment of the pin position is not required, assembly adjustment becomes easy, and maintainability is improved and costs are reduced.

[0048] The box-shaped member 700 is a member that determines the mounting position of the solenoid device 500.

[0049] The box-shaped member 700 is fitted between the wall portion 601 of the stay member 600 and the wall surface 521 of the solenoid device main body portion 520, which is the switching operation device main body portion of the solenoid device 500 and faces the wall portion 601.

[0050] The slide plate 400 and the solenoid plunger 510 penetrate through the box-shaped member 700.

[0051] The box-shaped member 700, which is a U-shaped plate, functions as a solenoid base and is disposed between the stay member 600 and the solenoid device 500. When the solenoid device 500 is assembled to the stay member 600, regular right-angle assembly in which the solenoid fixing angle almost exactly matches 90 degrees is easily achieved, and almost no solenoid assembly defects occur.

[0052] The shape of the end portion of the box-shaped member 700 located on the side of the stay member 600 is a so-called remaining bent shape. By using the pressing against the solenoid device main body portion 520, the assembly of the solenoid device 500 can be performed while checking the base lateral dimension with respect to the stay member 600, so that convenience is improved.

[0053] The solenoid device 500 is fixed to a solenoid staple plate 610 as a support frame fixed to the stay member 600 with bolts 620.

[0054] On the upper surface of the solenoid staple 610, a large number of convex portions 611 for restricting the mounting position of the solenoid device 500 are formed. Therefore, when the solenoid device 500 is fixed to the upper surface of the solenoid staple 610, the position is restricted by the convex portions 611, and the assembly position is determined at a predetermined position. Also, after assembly, it is supported by the convex portions 611 and movement is blocked. Thus, the durability and operability of the solenoid device 500 are maintained well.

[0055] Further, the solenoid device main body portion 520 of the solenoid device 500 is provided with a through hole 531 at a position corresponding to the solenoid plunger 510 of the back wall 530, and the through hole 531 is blocked with a rubber cap 532 as a dustproof member.

[0056] Therefore, by removing the rubber cap 532 and spraying a cleaning spray from the through hole 531 toward the solenoid plunger 510, maintenance can be performed without disassembling the solenoid device main body portion 520. Thus, the maintainability is improved.

[0057] The slide plate 400 has a flange portion 404 as a locking portion.

[0058] The flange portion 404 is on the side of the solenoid device 500 with reference to the stay member 600.

[0059] A slide plate biasing spring 410, which is a biasing member for biasing the slide plate 400 so that the slide plate 400 restricts the movement of the rotation arm 300, is fitted between the flange portion 404 and the wall surface 521 of the solenoid device main body portion 520.

[0060] The box-shaped member 700 is provided with a slide plate biasing spring insertion hole 701 into which an end portion of the slide plate biasing spring 410 that abuts against the wall surface 521 is inserted.

[0061] The spring end of the slide plate biasing spring 410 that functions as a solenoid plunger return spring fits almost exactly. A slide plate biasing spring insertion hole 701 is provided in the wall portion of the box-shaped member 700 corresponding to the central portion of the wall surface 521 of the solenoid device main body 520 with a hole diameter dimension that almost matches the outer diameter dimension of the spring end. Since the position of the slide plate biasing spring 410 is accurately determined, almost no contact interference occurs between the slide plate biasing spring 410 and the solenoid plunger 510, and the solenoid operation becomes stable.

[0062] As shown in FIG. 8, which is a partial perspective view of the vicinity of the slide plate biasing spring 410 of the transplanter in the embodiment of the modification in the present invention, the slide plate biasing spring 410 may be a conical spring that does not need to form a slide plate biasing spring insertion hole 701. The outer diameter dimension of the spring on the solenoid device 500 side almost matches the inner diameter dimension of the solenoid cover, and since the position of the slide plate biasing spring 410 is accurately determined by the solenoid cover, simplification of the configuration is promoted.

[0063] And the small-diameter portion where the slide plate biasing spring 410 engages with the flange portion 404 of the slide plate 400 is located at a position covering both outer ends of the connecting pin 420 provided through the slide plate 400 and the solenoid plunger 510 of the solenoid device 500, serving as a retaining means for the connecting pin 420, improving durability and safety, and preventing the connecting pin 420 from coming out and interrupting the planting operation.

[0064] The box-shaped member 700 has one or a plurality of removable shim plates 710 for adjusting the mounting position of the solenoid device 500.

[0065] The number of shim plates 710 for easily adjusting the degree of bottoming of the solenoid plunger inserted between the wall portion 601 of the stay member 600 and the box-shaped member 700 may be multiple, taking into consideration the solenoid shape, etc. The shim plates 710 may be inserted, for example, between the wall surface 521 of the solenoid device main body 520 and the box-shaped member 700.

[0066] In addition, there may be a situation where the provision of the shim plate 710 would result in the solenoid plunger bottoming out inappropriately due to slight assembly tolerances, wear and tear from continuous use, etc. In this case, a configuration in which no shim plate 710 is provided may be possible.

[0067] In order to reduce damage caused by contact interference between the rotating arm 300 and the slide plate 400 by line contact or the like, the shape of the arm tip of the rotating arm 300 that comes into contact with the slide plate 400 is a so-called R shape with a small contact area. Since the sliding resistance between the rotating arm 300 and the slide plate 400 is reduced, stable plant spacing control is achieved.

[0068] The rotating arm 300 is composed of a base arm 301 and a stopper plate 302 fixed to the upper part of the base arm 301 .

[0069] A long hole 303 is provided at the base of the stopper plate 302 along the direction of rotation of the rotating arm 300, and bolts 305 serving as pins are inserted through the long hole 303 and two through holes 304 provided at the upper end of the base arm 301 to fix the stopper plate to the base arm 301.

[0070] Therefore, the stopper plate 302 that contacts the slide plate 400 and fits into the slide plate notch 403 can be adjusted in the near - far direction with respect to the slide plate 400 at the long hole 303, that is, the position when it retracts from the slide plate notch 403 and contacts the slide plate 400 can be adjusted in the near - far direction. Also, since it is fixed after position adjustment with a plurality (two in the embodiment) of bolts 305 in one long hole 303, the inclination accuracy of the rotating arm 300 is improved, and the stability of the operating timing of the rotating arm 300 can be achieved.

[0071] The tip of the stopper plate 302 is provided with a stopper portion 302a that contacts the slide plate 400 at the upper part and fits into the slide plate notch 403, and a guide portion 302b that is a part of the stopper plate 302 protruding toward the slide plate 400 side from the stopper portion 302a.

[0072] And, the stay member 600 is provided with a guide portion 602 that extends below the slide plate 400, and a guide groove 602a that guides the guide portion 302b of the stopper plate 302 in a state where the guide portion 302b of the stopper plate 302 is always inserted therein is formed.

[0073] In particular, the guide portion 602 is provided with a curved surface protrusion 603 that protrudes into the guide groove 602a facing the entrance portion (the end portion of the guide groove 602a) of the guide groove 602a, and is configured to guide the guide portion 302b of the stopper plate 302 with the opposing curved surface protrusion 603.

[0074] Therefore, although the stopper portion 302a above the stopper plate 302 rotates by entering and retracting into the slide plate notch 403 of the slide plate 400, since the guide portion 302b of the stopper plate 302 is always inserted into the guide groove 602a, the stopper portion 302a above the stopper plate 302 is always maintained at a predetermined position with respect to the slide plate 400. The stopper portion 302a above the stopper plate 302 appropriately enters the slide plate notch 403 of the slide plate 400 at a predetermined timing, and the rotation arm 300 appropriately turns on and off the planter lifting clutch 200, enabling stable plant spacing control.

[0075] Furthermore, since the guide portion 302b of the stopper plate 302 is guided by the curved surface protrusion 603 protruding into the guide groove 602a at the entrance portion (end portion of the guide groove 602a) of the guide groove 602a of the guide portion 602, the frictional resistance when the guide portion 302b of the stopper plate 302 moves in the guide groove 602a is suppressed (reduced), and it is well guided to enable appropriate movement of the stopper plate 302.

[0076] Also, a through hole 103 is provided in the wall surface of the vehicle body 101 covering the slide plate 400 portion at a position corresponding to the moving direction of the slide plate 400, and the through hole 103 is covered with a rubber cap 104.

[0077] Therefore, during normal planting work, since the through hole 103 in the wall surface of the vehicle body 101 covering the slide plate 400 portion is covered with the rubber cap 104, dust such as soil, sand, and mud is prevented from entering the slide plate 400 portion, enabling appropriate operation of the slide plate 400 portion and appropriate seedling transplanting work.

[0078] Also, when checking the operating state of the planter 131 of the planting device 130, by removing the cap 104 and pushing the slide plate 400 from the through hole 103, the rotating arm 300 enters the slide plate notch 403 of the slide plate 400 and the planter 131 performs one planting operation, so that the operating state can be easily checked.

[0079] Further, the solenoid device 500 is provided with a resin-made translucent cover 105 to prevent it from being covered with dust such as soil, sand, and mud, and the dust such as soil, sand, and mud scattered during the planting operation of the planter 131 of the planting device 130 is prevented from adhering to the slide plate 400 portion by the dust cover 107 provided between the cover 105 and the planting transmission case 106.

[0080] Finally, other components will be described.

[0081] The vehicle body 101 moves up and down when the left and right drive rear wheels 122 are moved up and down by the hydraulic cylinder 123, but when the engine 110 is stopped and the vehicle is parked, the hydraulic cylinder 123 shrinks due to oil leakage of the hydraulic cylinder 123 and the vehicle body 101 descends.

[0082] Therefore, a stopper plate 124 for preventing the shrinkage of the hydraulic cylinder 123 is provided, and the stopper plate 124 is moved downward to mechanically lock the hydraulic cylinder 123 to prevent shrinkage, and when the engine 110 is stopped and the vehicle is parked, the hydraulic cylinder 123 shrinks due to oil leakage of the hydraulic cylinder 123 and the vehicle body 101 descends is prevented (see Fig. 11(a)).

[0083] And when the engine 110 is operating and performing planting work, the stopper plate 124 is moved upward to retract the hydraulic cylinder 123 to a position where it is not mechanically locked (see Fig. 11(b)), but the retracted stopper plate 124 in the upward movement may contact the cover 108 in the vicinity, receive the vibration of the machine body, vibrate, and generate abnormal noise.

[0084] Therefore, the lower part 109a of the rubber material 109 for mounting a capacitor, which mounts the capacitor provided on the cover 108, is provided so as to extend downward through the cover 108, and a stopper plate 124 that has moved upward and retracted contacts the lower part 109a of the rubber material 109 for mounting a capacitor.

[0085] Therefore, when the engine 110 is running and the planting operation is being performed, if the stopper plate 124 is moved upward to retract the hydraulic cylinder 123 to a position where it is not mechanically locked, the upwardly retracted stopper plate 124 contacts the lower part 109a of the rubber material 109 for mounting a capacitor, and it is possible to prevent vibration and the generation of abnormal noise even when affected by the vibration of the machine body.

[0086] As shown in FIG. 12, the fuel tank 140 is provided by fixing the front and rear parts to the upper parts of the front fuel tank support frame 141 and the rear fuel tank support frame 142, which have their bases fixed to the vehicle body 101 before and after the engine 110.

[0087] And a heat insulating plate 144 is disposed between the fuel tank 140 and the muffler 143 of the engine 110, and the front and rear parts of the heat insulating plate 144 are fixed to the front fuel tank support frame 141 and the rear fuel tank support frame 142.

[0088] Therefore, the heat insulating plate 144 prevents the heat of the engine 110 and the muffler 143 from being transmitted to the fuel tank 140, and the left and right side portions 144a are bent upward, allowing the heat of the engine 110 and the muffler 143 to escape to the left and right sides of the machine body, reducing the temperature rise of the fuel tank 140.

[0089] In addition, the portions bent upward of the left and right side portions 144a receive the fuel overflowing from the fuel tank 140 and guide it to the front and rear of the muffler 143 and let it fall, preventing the overflowing fuel from hitting the muffler 143 and ensuring safety.

[0090] In addition, since the front and rear portions of the heat insulating plate 144 are fixed to the front fuel tank support frame 141 and the rear fuel tank support frame 142, the rigidity is improved and it also contributes to vibration reduction.

[0091] On both the left and right sides of the front fuel tank support frame 141, the base of the vibration isolator 145 made of an iron round bar with an elastic body 145a such as a rubber tube attached to the tip is attached, and the vibration isolator 145 is extended in the left - right direction of the fuselage to cover the front part of the fuselage. The elastic body 145a at the tip is brought into contact with the inner surface of the hood (bonnet).

[0092] Therefore, the vibration isolator 145 reduces the vibration of the hood (bonnet).

[0093] The transplanter is equipped with a watering device for watering the seedlings planted in the field by the planter 131. Here, the part for sucking water disposed in the water tank of the watering hose 900 that sucks water from the water tank of the watering device will be described.

[0094] As shown in FIG. 13, a connector 901 is fitted into the tip of the watering hose 900, a stainless - steel spring 902 is externally fitted to the connector 901, and the spring 902 is built into the resin - made mesh filter 903.

[0095] Therefore, the mesh filter 902 is made of resin so as not to generate rust, and even if an external load such as accidental stepping by an operator is applied, damage is prevented.

[0096] In addition, if a resin cap is attached to the tip of the spring 902, when the spring 902 is inserted into the resin - made mesh filter 903, even if the tip of the spring 902 catches slightly on the resin - made mesh filter 903, a situation where the mesh filter 903 is broken can be prevented.

Explanation of reference numerals

[0097] 131 Planter 200 Planter lifting clutch 300 Rotating Arm 301 Base Arm 302 Stopper Plate 302b Part of Rotating Arm 300 (Guide Part) 303 Long Hole 305 Pin (Bolt) 400 Regulation Plate (Slide Plate) 403 Regulation Plate Notch (Slide Plate Notch) 404 Locking Part (Flange Part) 410 Biasing Member (Slide Plate Biasing Spring) 420 Connecting Pin 500 Switching Actuator (Solenoid Device) 510 Switching Actuating Body (Solenoid Plunger) 520 Switching Actuator Main Body Part (Solenoid Device Main Body Part) 531 Through Hole 532 Dustproof Member (Rubber Cap) 602 Guide Part 602a Guide Groove 603 Curved Surface Projection 610 Support Frame (Solenoid Staple Plate) 611 Protrusion

Claims

1. In a transplanter provided with a planting tool lifting clutch (200) for controlling the transmission of a driving force for intermittently lifting and lowering a planting tool (131), a rotating arm (300) for turning on and off the planting tool lifting clutch (200), a regulating plate (400) for regulating the movement of the rotating arm (300), and a switching operating device (500) for intermittently switching the regulating plate (400), the switching operating device (500) switches the regulating plate notch (403) provided in the regulating plate (400) between a position where the rotating arm (300) enters and a position where entry is restricted. When the regulating plate (400) is switched to a position where the rotating arm (300) enters the regulating plate notch (403), a guide portion (602) having a guide groove (602a) into which the rotating arm (300) enters is provided on the machine frame side. A curved surface protrusion (603) protruding into the guide groove (602a) is provided in the guide portion (602), and a part (302b) of the rotating arm (300) is always positioned within the guide groove (602a). The transplanter is characterized by this.

2. The rotating arm (300) is composed of a base arm (301), a long hole (303) in the upper part of the base arm (301), and a stopper plate (302) fixed to the regulating plate (400) so as to be adjustable in distance with respect to the regulating plate (400) by a plurality of pins (305) inserted into the long hole (303). The transplanter according to claim 1, characterized by this.

3. The switching operating body (510) of the switching operating device (500) and the regulating plate (400) are connected by a connecting pin (420). A biasing member (410) for biasing the regulating plate (400) in a predetermined direction is mounted on the outer periphery of the switching operating body (510). A locking portion (404) for receiving one side end portion of the biasing member (410) is formed at one side end portion of the regulating plate (400), and the inner periphery of the biasing member (410) is disposed at a position in contact with the connecting pin (420). The transplanter according to claim 1 or claim 2, characterized by this.

4. A convex portion (611) for restricting the mounting position of the switching operating device (500) is provided on a support frame (610) for supporting the switching operating device (500). The transplanter according to any one of claims 1 to 3, characterized by this.

5. A transplanter according to any one of claims 1 to 4, characterized in that a through hole (531) is provided at a position corresponding to a switching operating body (510) of a switching operating device main body (520) of a switching operating device (500), and the through hole (531) is closed with a dust-proof member (532).

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