JP4872980B2 - Rice transplanter - Google Patents

Description

  The present invention relates to a rice transplanter.

Conventionally, as shown in Patent Document 1, the guide groove for guiding the forward / reverse operation of the shift lever has a crank-shaped pattern, and the central portion in the left-right direction is the neutral guide portion, and the front side thereof. The front-rear direction portion is a forward guide portion, and the rear front-rear direction portion is a reverse guide portion. Then, when the traveling vehicle body is moved backward by an operation for moving the shift lever backward, the working device is automatically raised to the non-working position.
Japanese Patent Laid-Open No. 11-4609

  An object of the present invention is to secure a safety in operation of a shift lever and to obtain a rice transplanter equipped with a visor suitable for rice transplanting work.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the present invention according to claim 1, the vehicle body (1) provided a pair of left and right front wheels (2) and the rear wheels (3), operation box to the front of the vehicle body (1) (4) and steering wheel ( 5) , a driver's seat (9) is provided on the rear side of the steering handle (5) , a transmission lever (40) for operating the transmission (23) to switch forward and backward movement of the aircraft is provided, and the vehicle body (1 In the rice transplanter equipped with a raising / lowering link mechanism (7) at the rear part of ) so that the seedling planting part (6) can be raised and lowered, the operation path (41) of the shift lever (40) extends in the left-right direction. neutral path (41N), supra and backward neutral path forward path connected to cross the (41N) (41F) and a reverse path (41R) configured, forward path (41F) and the reverse path and (41R) click at different positions intersecting the forward and backward neutral path (41N) Configure the tank shape, the forward-reverse-neutral path (41N) and the forward-reverse-neutral path (41N) cranked operational path at a position beyond the position that intersects the backward path (41R) at the side edge portion of the (41F, 41N, 41R) is provided with an extended end position (NE) protruding in the left-right direction, and a detecting means (42) for detecting that the shift lever (40) is operated is provided at the extended end position (NE), A visor (60) including a control means (44) for raising the seedling planting part (6) based on the detection result of the detection means (42) and sliding along a guide rail (72) formed in a curved shape in a side view. ) Is used as a rice transplanter .

Further, according to the present invention, the vehicle body (1) is provided with a pair of left and right front wheels (2) and a rear wheel (3), and an operation box (4) and a steering handle ( 5), a driver's seat (9) is provided on the rear side of the steering handle (5), a transmission lever (40) for operating the transmission (23) to switch forward and backward movement of the aircraft is provided, and the vehicle body (1 In the rice transplanter equipped with a raising / lowering link mechanism (7) at the rear part of) so that the seedling planting part (6) can be raised and lowered, the operation path (41) of the shift lever (40) extends in the left-right direction. It consists of a neutral path (41N), a forward path (41F) and a reverse path (41R) connected across the forward / backward neutral path (41N), and the forward path (41F) and the reverse path (41R) Clan with different positions crossing the forward / backward neutral path (41N) The crank-shaped operation path (41F, 41N, 41R) is located at a side end of the forward / reverse neutral path (41N) and beyond a position intersecting the reverse path (41R) of the forward / backward neutral path (41N). ) the extended end position (NE) which projects in the lateral direction is provided from said extension extension end position (detecting means for detecting the fact that the shift lever (40) is operated in NE) (42) is provided, said detector A control means (44) for raising the seedling planting part (6) based on the detection result of the means (42) is provided, a center mascot lamp column (75) provided with a center mascot lamp (75a) is provided, and a visor (60 ) Is supported by a front strut extending upward from the center mascot lamp strut (75) and a rear strut (74) provided on the left and right .

According to the third aspect of the present invention, the visor (60) includes a central center visor (60a) and side visors (60b) on both sides, the center visor (60a) is colored, and both side visors (60b) ) Is configured to be translucent . The rice transplanter according to claim 1 or claim 2 is provided . Further, the present invention as set forth in claim 4 is a rice transplanter as set forth in claim 3 , characterized in that a seedling adjustment lever (54) which can be attached at two positions with respect to the base arm (55) is provided. It is .

According to the first and second aspects of the invention, since the seedling planting part 6 automatically rises from the lowered state to the upper non-working position, the seedling planting part 6 is reliably raised before the reverse operation. It is possible to prevent the seedling planting part 6 from being pulled and to ensure safety. Further, if the speed change lever 40 is not operated to the extended end position NE detected by the detecting means 42, it is possible to move backward without raising the seedling planting portion 6, and this is effective in the border or warehouse.

Furthermore, according to the first aspect of the present invention, when moving in the rain, when affected by wind from the front, the visor 60 is tilted while shifting the position of the visor 60 in order to avoid rain hitting from the front. Can be effective in preventing rain.

On the other hand, according to the second aspect of the present invention, the visor 60 is supported by the center mascot lamp column 75 so that the cost and the weight can be reduced. In addition, since there are no extra struts on the step, the step can be opened widely, making it easy to get on and off the step.

Therefore, according to the first and second aspects of the invention, it is possible to secure a safety in the operation of the speed change lever 40 and to obtain a rice transplanter equipped with a visor 60 suitable for rice transplanting work. Thus, the problems of the invention can be solved.

According to the invention of claim 3, in addition to the effects of the inventions of claim 1 and claim 2, the center is colored for sun protection, and both sides are translucent so that the driver's seat does not become dark. The light is easy to enter and is good.

According to the invention of claim 4, in addition to the effect of the invention of claim 3, the seedling adjustment lever 54 can be attached to the base arm 55 at two positions, and the guide length is increased by the same lever guide 56. It is possible to cope with two kinds of adjustment ranges up to a seedling harvesting amount of 21 mm and a seedling harvesting amount of 18 mm without doing so.

An embodiment of the present invention will be described with reference to the drawings.
1, 2, and 3 show a 6-row Ueda transplanter as an example of an agricultural machine, and a pair of left and right front wheels 2, 2 and rear wheels 3, 3 as traveling wheels are provided before and after the vehicle body 1. It is erected. An operation box 4 having an operation panel 4a on the upper surface and a steering device having a steering handle 5 and the like are installed at the front upper part of the vehicle body, and a seedling planting part 6 as an example of an agricultural work device can be moved up and down at the rear part of the vehicle body Equipped with. A driver's seat 9 is installed on the rear side of the control device, and an engine E that transmits power to each part of the rice transplanter is mounted below the driver's seat.

  The steering handle 5 is steered by steering the left and right front wheels 2 and 2 via an output shaft that is decelerated and rotated from the steering shaft by the turning operation, the pitman arm 17, the steering rod 18, and the like. Yes.

  The seedling planting portion 6 is mounted on the rear portion of the vehicle body through a lifting link mechanism 7 so as to be able to be lifted and lowered by a telescopic operation of the lifting hydraulic cylinder 8. The lifting hydraulic cylinder 8 is controlled to be expanded and contracted by a lifting electromagnetic hydraulic valve 10.

  In addition, the seedling planting unit 6 includes a two-row planting device 13 and 13 having a seedling tank 11 that reciprocates left and right, and a planting basket 12 that cuts out one seedling and transplants it into the soil. ..., floats (side floats) 14 and 14 for leveling while sliding on the seedling planting surface, center float 14S, and the like are provided.

  The rotational power of the engine E is transmitted to an input shaft 35 of a hydraulic continuously variable transmission (HST) 23 via a belt transmission device 31, and from the output shaft 36 of the HST 23 via a belt 32 to the mission input shaft of the mission case 24. 34 has been communicated. Further, the hydraulic pump 22 is driven from the HST 23 via the belt 33.

  The front wheels 2, 2 are pivotally supported by front wheel support cases 25, 25 that can be turned to the side of the transmission case 24, and the rear wheels 3, 3 are attached to the left and right ends of the rolling support rod 26. Further, the rear wheel support cases 27 and 27 are pivotally supported so that power is transmitted from the transmission device in the transmission case 24 via the rear wheel transmission shaft 38. The rolling support rod 26 is pivotally supported by a rolling shaft 29 supported by a horizontal frame 28a that connects the rear ends of the left and right main frames 28, 28 so as to be tiltable in the left-right direction.

  An operation lever (transmission lever) 40 capable of shifting operation is disposed on the lateral side of the operation box 4, and the transmission (HST) 23 is driven by operating the operation lever 40 in the front-rear direction to control forward and backward movement of the machine body. It is configured to control. The guide groove that guides the forward / reverse operation of the shift lever has a crank-shaped pattern, with the center portion in the left-right direction being the neutral guide portion, the front-rear direction portion being the forward guide portion, and the rear-side guide portion. The front-rear direction part is a reverse guide part. The operation path 41 of the operation lever that can be switched forward and backward includes a forward / reverse neutral path 41N extending in the lateral direction, a forward path 41F and a reverse path 41R connected to cross the forward / backward neutral path 41N, and the forward path 41F and reverse path 41R are formed in a crank shape with different positions intersecting with forward / reverse neutral path 41N, and the end of reverse path 41R on the side of reverse path 41N crosses reverse path 41R. The extension end position NE is provided with a detection switch 42 for detecting that the operation lever 40 has been operated, and the detection result of the detection switch 42 is detected. On the basis of the above, the raising / lowering electromagnetic hydraulic valve 10 is controlled by the farm work device raising means 44 of the control unit 43 and the raising / lowering hydraulic cylinder 8 is used to remove the seedling planting unit 6 (farm working device). It is configured to be raised to work position.

  In the embodiment shown in FIG. 5, the planting part rolling shaft 46 is configured such that it can be freely rolled when the planting part is lowered, and the rolling is locked by the lock plate 47 only when the planting part is fully raised. That is, the upper side of the lock plate 47 is connected to the upper link 7a side of the upper link 7a and the lower link 7b of the elevating link mechanism 7 through the front and rear elongated holes 49 provided on the upper link 7a side. The lower pin of the lock plate 47 is connected to the lower link 7b by the under pin 52 through the long hole 51 in the vertical direction provided on the lock plate 47 side. Therefore, according to the above configuration, when the seedling planting part is raised to the highest position, the rolling state of the seedling planting part is locked and the seedling tank is tilted toward the operator side so that the seedling replenishing port approaches, so that seedling replenishment Becomes easy. Moreover, since the rolling is locked, it is easy to replenish seedlings even on the side far from the operator on both sides of the seedling tank.

  If the amount of seedlings is added to the conventional 8 to 18 mm and is taken up to 21 mm, the lever guide length becomes too long, and a space is required. Therefore, in order to perform the seedling adjustment of the mat seedling and the paper pot seedling with the same configuration, as shown in FIG. 6, the seedling adjustment lever 54 is connected to the base arm 55 with two of A1, A2 to B1, B2. If it can be attached to the position, the same lever guide 56 can cope with the amount of up to 21 mm and up to 18 mm without increasing the guide length.

  As shown in FIGS. 1 and 2, in the rain visor 60, the central visor (center visor) 60 a may be white (colored), and the visors (side visor) 60 b on both sides may be translucent. In order to avoid the sun, the center is well colored and both sides are semi-transparent so that the driver's seat is not dark.

  In addition, as shown in FIG. 7, the visor 60 can be arbitrarily adjusted in height by parallel links 62 and 62 connecting the support 61 and the visor 60 at four points. The parallel links 62 and 62 are configured such that the angle is adjusted by a ratchet mechanism 63 and the knob bolts 64 are fastened and fixed.

  In the embodiment shown in FIGS. 8 and 9, when traveling / planting is stopped, the visor 60 is automatically raised and stopped at a predetermined position. For example, as shown in FIG. 9, the planting switch 66 is OFF, and based on the neutral position detection result of the shift lever sensor 67, the visor lift motor 69 controls the visor lift motor 69 to drive the spiral shaft 70. The visor is raised automatically. When the visor rises to a predetermined position, it stops by detection of the stroke sensor 71. Employing this means is convenient when replenishing seedlings. Note that the visor can be configured to return to a predetermined height during planting.

  In the embodiment shown in FIGS. 10 and 11, guide rails 72 and 72 using C steel are arranged on the left and right sides, and are formed in a curved shape in a side view, and the visor 60 is formed along the guide rails 72 and 72. It is configured to be slidable. The guide protrusion 73 of the visor is guided along the C steel groove of the guide rail. When moving in the rain or under the influence of wind from the front, the visor can be tilted from the solid line position in FIG. Is a big one.

  Further, the sun visor 60 of the embodiment shown in FIG. 12 has a configuration in which the rear side is supported by left and right columns 74, 74, and the front column is extended upward using a center mascot lamp column 75 and shared. It is said. The center mascot lamp column 75 is provided with a mascot lamp 75a. In addition, instead of the center mascot lamp column 75, a configuration may be used in which the heel over arm 76 is extended and shared.

  In short, by sharing the front strut with the center mascot lamp strut, cost reduction and weight reduction can be achieved. Also, since there are no extra struts on the step, it is easier to get on and off the step, and the step can be opened widely.

Side view of rice transplanter Top view of rice transplanter Top view of the main part Control block circuit diagram (B) Rolling lock state side view when raised and (b) Rolling lock released side view when lowered Side view showing the state of changing the mounting position of the seedling adjustment lever Side view with visor height adjustment means Side view with automatic visor lifting means Control block circuit diagram Side view of main part of tractor with visor Front sectional view of the main part of the visor Perspective view of tractor with visor

1 Car body (car body) 6 Seedling planting part (agricultural work equipment)
40 gear shift lever (operating lever) 41 operation path 41F forward path 41R reverse path 41N forward / backward neutral path 42 detection means 43 control unit 44 agricultural work equipment lifting means NE extended end position

Claims (4)

A pair of left and right front wheels (2) and a rear wheel (3) are provided on the vehicle body (1), an operation box (4) and a steering handle (5) are provided on the front portion of the vehicle body (1), and the steering handle (5) A driver's seat (9) is provided on the rear side, a speed change lever (40) for operating the speed change device (23) to switch forward and backward movement of the airframe is provided, and an elevating link mechanism (7) is provided at the rear part of the vehicle body (1 ) In the rice transplanter equipped with the seedling planting part (6) so as to be able to move up and down, a forward / reverse neutral path (41N) extending in the left-right direction and a forward / backward neutral path along the operation path (41) of the shift lever (40) (41N) a forward path (41F) and a reverse path (41R) connected to each other, and a position where the forward path (41F) and the reverse path (41R) intersect the forward / reverse neutral path (41N) Are configured in a crank shape with different forward and backward neutral paths ( And the forward-reverse-neutral path (41N) cranked operational path at a position beyond the position that intersects the backward path (41R) at the side edge portions of 1N) (41F, 41N, extending to protrude in the lateral direction from 41R) Extension end A position (NE) is provided , and a detecting means (42) for detecting that the shift lever (40) is operated is provided at the extended end position (NE). Based on the detection result of the detecting means (42) Rice transplanter comprising a control means (44) for raising the seedling planting part (6) and provided with a visor (60) that slides along a guide rail (72) formed in a curved shape in a side view . A pair of left and right front wheels (2) and a rear wheel (3) are provided on the vehicle body (1), an operation box (4) and a steering handle (5) are provided on the front portion of the vehicle body (1), and the steering handle (5) A driver's seat (9) is provided on the rear side, a speed change lever (40) for operating the speed change device (23) to switch forward and backward movement of the airframe is provided, and an elevating link mechanism (7) is provided at the rear part of the vehicle body (1). In the rice transplanter equipped with the seedling planting part (6) so as to be able to move up and down, a forward / reverse neutral path (41N) extending in the left-right direction and a forward / backward neutral path along the operation path (41) of the shift lever (40) (41N) a forward path (41F) and a reverse path (41R) connected to each other, and a position where the forward path (41F) and the reverse path (41R) intersect the forward / reverse neutral path (41N) Are configured in a crank shape with different forward and backward neutral paths ( 1N) and an extended end protruding in the left-right direction from the crank-shaped operation path (41F, 41N, 41R) at a position exceeding the position intersecting the reverse path (41R) of the forward / backward neutral path (41N) A position (NE) is provided, and a detecting means (42) for detecting that the shift lever (40) is operated is provided at the extended end position (NE). Based on the detection result of the detecting means (42) The control means (44) which raises a seedling planting part (6) is provided, the center mascot lamp support | pillar (75) which provided the center mascot lamp (75a) is provided, the visor (60), the center mascot lamp support | pillar (75) A rice transplanter characterized in that it is supported by a front column extending upward from the left and a rear column (74) provided on the left and right . The visor (60) is composed of a central center visor (60a) and side visors (60b) on both sides, the center visor (60a) is colored, and the side visors (60b) on both sides are translucent. The rice transplanter according to claim 1 or claim 2. The rice transplanter according to claim 3, further comprising a seedling adjustment lever (54) that can be attached to the base arm (55) at two positions .

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