JP2011092076A - Working vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a working vehicle that improves working efficiency of decapitation operation of crops and reduces a burden of an operator. <P>SOLUTION: The working vehicle is equipped with traveling devices 3 and 4, a driver's seat 5 arranged above the traveling devices 3 and 4 and a cutting blade mechanism portion K that is arranged ahead of the driver's seat 5, has a longitudinal direction at the right and left direction to a forward direction of the traveling devices 3 and 4 and includes a plurality of cutting blade devices 30 equipped with cutting blades 27 for cutting the upper parts of crops in such a way that the lengthwise positions of the cutting blade devices 30 are shifted and a distance L between the central parts of right and left of the adjacent cutting blade devices 30 is approximately equal to an interrow space distance. By arranging the distance between the central parts of the right and left cutting blade device 30 to the interrow space distance, the central parts of right and left of the cutting blades 27 are adjusted to approximately the center of crop to be cut to prevent cutting mistakes. When each cutting blade device 30 is equipped with a drive source 31 and the drive source 31 is arranged at the same side of right or left side of each cutting blade device 30, a movement distance of the operator in start of the drive source 31 is shortened. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a work vehicle provided with a cutting blade device for pinching crops such as soybeans.

  For crops such as soybeans, the process of pinching is usually performed during the growing process. Pinching is the work of cutting out the growth point of a plant. Plants that have lost their growth point by pinching out will try to grow side buds and grow larger, so the final point is more than when the growth point is left unattended. Increased yield.

  As an example of a device for performing a pinching operation, in Patent Document 1 below, a horizontal frame is installed between a pair of left and right support columns having a front wheel and a rear wheel, and a clipper type cutting blade is provided below the horizontal frame. A traveling pruning machine equipped with a mechanism is disclosed. This clipper-type cutting blade mechanism can be driven by an engine to cut the uppermost ends of the stems of each of a large number of soybeans growing in a field so that the plant height from the ground of each soybean is uniform. it can.

JP 2004-267018 A

  The clipper cutting blade mechanism of the traveling type pruning machine described in Patent Document 1 makes it possible to pinch crops such as soybeans. However, since this traveling type pruning machine is a walking type, the speed is significantly slowed down. In addition, there are problems such as poor working efficiency and a part cut by the clipper type cutting blade mechanism during the pinching operation is scattered toward the operator. Furthermore, since the vibration of the clipper-type cutting blade mechanism in the pinching operation is intense, the burden on the operator is heavy and it is difficult to work for a long time. And since there is a limit to the engine horsepower that drives the cutting blade, there is also a problem that cutting becomes difficult when the crop stem is thick.

  Accordingly, an object of the present invention is to provide a work vehicle that can improve the work efficiency of the work of pinching crops such as soybeans and reduce the burden on the operator.

The above problem is solved by the following configuration.
Invention of Claim 1 is provided in front of the traveling device (3, 4), the cockpit (5) provided on the traveling device (3, 4), and the cockpit (5), A plurality of cutting blade devices (30) each provided with a cutting blade (27) having a longitudinal direction in the left-right direction toward the advancing direction of the traveling device (3, 4) and having a cutting blade (27) for cutting the upper part of the crop. The front and rear positions of the device (30) are shifted, and the distance (L) between the left and right of the central portion (C) in the left-right direction of the cutting blade (27) of each adjacent cutting blade device (30) is approximately the distance between the crops. A work vehicle provided with a cutting blade mechanism (K) arranged to be the same.

  According to the second aspect of the present invention, each of the cutting blade devices (30) is provided with a driving source (31) for driving the cutting blade (27), and each of the driving sources (31) is connected to the traveling device (3, 3). 4. The work vehicle according to claim 1, wherein the work vehicle is disposed on the same side of the left and right sides of each cutting blade device (30) in the forward direction of 4).

According to the first aspect of the present invention, since the pinching operation can be performed with the riding type work vehicle, the pinching operation can be performed at high speed. Moreover, it becomes possible to increase the engine horsepower for driving the cutting blade device (30), and the work efficiency of the pinching operation is improved. And since the position of the worker during the pinching operation is higher than that of the walking type, the portion cut by the cutting blade device (30) during the pinching operation is not scattered toward the worker, Since the vibration of the cutting blade device (30) is not directly transmitted to the worker, the burden on the worker is reduced.
Further, in each cutting blade device (30), the distance (L) between the left and right of the central portion (C) in the left-right direction of each cutting blade (27) of the adjacent cutting blade device (30) is substantially the same as the inter-strip distance. By arrange | positioning so that it may become, it can match | combine with the substantially center of the crop which cuts the left-right direction center part (C) of each cutting blade (27), and can prevent a cutting mistake.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the drive source (31) of each cutting blade device (30) is connected to the left and right sides of each cutting blade device (30). By arranging them on the same side, the movement distance of the worker to the drive source (31) when starting the drive source (31) can be shortened, and the burden on the worker is reduced.

1 is a side view of a work vehicle according to an embodiment of the present invention. It is a top view of the work vehicle of FIG. It is an enlarged view of the front part of the work vehicle of FIG. It is an enlarged view of the front part of the work vehicle of FIG. It is a detailed perspective view near the vertical frame of the work vehicle of one embodiment of the present invention. It is a front view of the work vehicle of FIG. 1 when a body inclines to the left side. It is a perspective view which shows the up-and-down moving mechanism of the clipper-type cutting blade apparatus of the working vehicle of one Embodiment of this invention. It is a perspective view for demonstrating the connection relation of the bracket vicinity of the working vehicle of FIG. It is a figure of the connection part of the resistance guide and bracket of the working vehicle of FIG. It is a front top view at the time of changing the shape of the resistance guide of the working vehicle of FIG. It is a perspective view at the time of providing a handle to the clipper type cutting blade device of the work vehicle of FIG.

FIG. 1 shows a side view of a work vehicle according to an embodiment of the present invention, and FIG. 2 shows a plan view of the work vehicle of FIG. 3 shows an enlarged view of the front part of FIG. 1, and FIG. 4 shows an enlarged view (partially omitted) of the front part of FIG.
Also, in this specification, the left and right directions are referred to as left and right, respectively, facing the forward direction of the work vehicle, the forward direction is referred to as front, and the reverse direction is referred to as rear.

  The engine E is mounted in the engine room covered with the bonnet 11 at the front of the body frame 1, the rotational power of the engine E is transmitted to the transmission in the transmission case 2, and the rotational power decelerated by the transmission is transmitted. It is the structure which transmits to the front wheel 3 and the rear wheel 4 which are travel apparatuses. An operator (driver) sits on the cockpit 5 mounted on the vehicle body frame 1 and operates the steering handle 9 to perform a pinching operation for crops such as soybeans.

  A vertical frame 17 is provided at the front ends of the horizontal frames 15a and 15b attached in the horizontal direction at the front of the body frame 1, and a clipper type cutting blade device 30 is attached to the machine body T so as to be movable up and down and left and right. . The clipper-type cutting blade device 30 can adjust the overall vertical height and horizontal height from the ground by a first cylinder 20 and a second cylinder 23 described later.

FIG. 5 shows a detailed view (perspective view) in the vicinity of the vertical frame 17 of the work vehicle shown in FIG. FIG. 5A shows a front portion of the vertical frame 17, and FIG. 5B shows a rear portion of the vertical frame 17.
The work vehicle according to the present embodiment forms a parallel link mechanism with the upper and lower horizontal frames 15a and 15b and the left and right vertical frames 17 on the left and right of the body T. The lower parts of the left and right vertical frames 17 are connected by a first arm 18, and the upper parts of the left and right vertical frames 17 are connected by a second arm 18 ′. In the parallel link mechanism, the left and right vertical frames 17 are moved up and down by operating the first cylinder 20 when not working and when working.

  The first arm 18 and the left and right frame 33 are connected by a connecting member 21, and the entire left and right frame 33 rolls with the connecting member 21 as a left and right pivot. A second cylinder 23 is attached in the vicinity of the connecting portion between the vertical frame 17 and the second arm 18 ′, and the lifting rod 19 that moves up and down by the second cylinder 23 is connected to the left and right frames 33 by a fixture 80. is doing. That is, the left and right frames 33 are supported by the connecting member 21 and the lifting rod 19. And the connection support frame 24 is each fixed to the left-right front side of the left-right frame 33, and the cutting blade 27 is supported with the support frame 40 via the vertical rotation fulcrum S (FIG. 4) of the cutting blade 27. As the elevating rod 19 is moved up and down, the left and right frames 33 roll in the left and right directions with the connecting member 21 as a fulcrum, so that the cutting blade 27 of the clipper type cutting blade device 30 also rolls together.

  Further, an inclination sensor 70 (FIG. 6) is provided on the machine body side, and the cutting blade 27 of the clipper type cutting blade device 30 is leveled even when the machine body T is inclined. For example, FIG. 6 shows a front view of the work vehicle when the machine body T is tilted to the left side. The actual position of the left and right frames 33 is detected by a position sensor 70 (an example of a tilt sensor), and a control device (not shown) is shown. The electric signal is transmitted to the second cylinder 23 and fed back to the operation of the second cylinder 23 to keep the left and right frames 33 and the support frame 40 horizontal.

  FIG. 7 shows a vertical movement mechanism of the clipper-type cutting blade device 30 of the work vehicle shown in FIG. 1 (perspective view). Further, a cutting blade vertical movement device 25 for moving the cutting blade 27 of the clipper type cutting blade device 30 up and down is attached to a central portion in the left and right direction of the left and right frame 33. The adjuster 25a (FIG. 3) connected to the left and right frames 33 is provided with a cylinder 25c having a female thread on its inner diameter, and the threaded portion 25ba of the rod 25b is inserted into the cylinder 25c.

  A support member 46 having a U-shaped cross section fixed to the upper surface of the support frame 40 is provided with a shaft 48 spanning in a space surrounded by the U shape. The end of the rod 25b of the moving device 25 opposite to the threaded portion 25ba is inserted, and the end projecting forward of the shaft 48 and the base side end of the vertical turning handle 73 of the cutting blade 27 are connected by the connecting member 49. They are connected together.

  The rod 25b of the cutting blade vertical movement device 25 is loosely fitted in the shaft 48 of the support member 46, and can rotate in the shaft 48. Therefore, when the vertical rotation handle 73 of the cutting blade 27 is turned in the arrow X direction, the rod 25b of the cutting blade vertical movement device 25 integrated with the vertical rotation handle 73 expands and contracts in the front-rear direction (arrow Y direction). As the rod 25b of the cutting blade vertical movement device 25 expands and contracts, the cutting blade 27 of the clipper type cutting blade device 30 together with the support frame 40 rotates up and down around the fulcrum S.

FIG. 8 is a perspective view for explaining the connection relation in the vicinity of the bracket of FIG.
A support frame 40 having a longitudinal direction in the left-right direction and horizontally installed by the connection support frame 24 is a hollow square tube as shown in FIG. The blade device 30 is supported. The bottom side (rear) lower surface of the bracket 42 is in contact with the upper surface of the support frame 40, and the upper surface of the under plate 43 is in contact with the lower surface of the support frame 40, and the bracket 42 is attached to the support frame 40 by bolts 45 and nuts 47. It is fixed.

  Then, a gear case 63 provided with a transmission of the clipper-type cutting blade device 30 is placed on the top surface of the front end portion (front portion) of the bracket 42 and fixed using a fixing tool such as a bolt 45 or a nut 47. The clipper-type cutting blade device 30 is attached. The clipper-type cutting blade device 30 has a configuration in which a lower blade 27 b fixed to the cutting blade support member 54 and an upper blade 27 a that reciprocates left and right are slidably overlapped. The upper end of the crop is cut by moving 27a left and right. And the cutting blade 27 which has a longitudinal direction in the left-right direction is comprised by providing the lower blade 27b and the upper blade 27a in multiple numbers in the left-right direction.

  Since the conventional pruning machine is a walking type, the speed is remarkably slow and the work efficiency is not good, and the part cut by the clipper type blade mechanism during the pinching operation is scattered to the operator. And because the vibration of the clipper type blade mechanism during pinching work is heavy, the burden on the operator is heavy, the work for a long time is difficult, and the engine horsepower that drives the blade is limited. When the stalks were thick, there were problems such as difficulty in cutting.

  However, according to this configuration, since the worker N can perform the pinching operation with the riding-type work vehicle provided with the cockpit 5, the pinching operation can be performed at a high speed. In addition, it is possible to increase the engine horsepower for driving the clipper type cutting blade device 30, and the work efficiency of the pinching operation is improved. And since the position of the operator at the time of the pinching operation becomes higher than that of the walking type, the portion cut by the clipper type cutting blade device 30 during the pinching operation does not scatter to the operator. Since the vibration of the clipper-type cutting blade device 30 is not directly transmitted to the worker, the burden on the worker is reduced.

  In addition, in the case of a conventional walking type centripetal work vehicle, a special vehicle is separately required for spraying the medicine, but in the case of the riding type of this configuration, a spray boom, a tank, etc. are attached. Thus, the work vehicle for pinching and spreading can be shared. The “medicine” refers to a liquid substance that is a nutrient, an agrochemical or the like and may contain a solid substance that needs to be sprayed on a crop. Further, when performing the weeding work, the work is performed with the herbicide. When spraying the medicine, the support frame 40 is a central boom provided with the spray nozzle 40a, side booms (not shown) are attached to the left and right of the machine body T, and the side booms are opened and closed by the left and right third cylinders 29. To do. Thus, the use of the work vehicle can be expanded by using the riding type vehicle for the pinching operation as the medicine spraying work vehicle. Therefore, the cost is reduced as compared with the case where the vehicles for each work are prepared, and it is convenient without taking up installation space.

  A compressor 83 is disposed at the rear of the work vehicle, and the air compressed by the compressor 83 is blown out from the air outlet 89 of the second compressed air blowing pipe 87 through the first compressed air blowing pipe 85. This blown air prevents the stems and leaves cut by the clipper-type cutting blade device 30 from being blown out and deposited on the cutting blade 27. Moreover, since the part cut | disconnected by the cutting blade 27 does not scatter to the body T side, it will not get down to an operator. Furthermore, adhesion of the intake part of the engine E to the net (not shown) can be prevented.

  And the working vehicle by this embodiment comprises the cutting blade mechanism part K which has arrange | positioned the several clipper type cutting blade apparatus 30 shifting the front-back position. By providing the plurality of clipper-type cutting blade devices 30 with the front and rear positions shifted, a compact cutting blade mechanism portion K with a reduced lateral width can be configured. In addition, the distance L between the left and right of the central part (C in FIG. 4) of each cutting blade 27 of each adjacent clipper type cutting blade apparatus 30 of each clipper type cutting blade apparatus 30 is substantially the same as the distance between the stripes. By arrange | positioning in this way, the center part of the horizontal direction of each cutting blade 27 can be match | combined with the substantially center of the crop which cuts, and a cutting mistake can be prevented.

  For example, the distance between the streaks when the crop is soybean is about 70 to 80 cm, and varies depending on the type of crop. If each clipper type cutting blade device 30 is installed so that the length of the cutting blade 27 of the clipper type cutting blade device 30 is about 100 cm and the distance between the center portions in the left-right direction of each cutting blade 27 is about 70 to 80 cm. good. In the illustrated example, the two clipper-type cutting blade devices 30 are arranged to be shifted back and forth, but three or more clipper-type cutting blade devices 30 may be arranged to be shifted back and forth in this way. When three or more hair clipper type cutting blade devices 30 are provided, they may be arranged from the front to the rear from the left side to the right side or from the right side to the left side (in a step shape in plan view). You may arrange | position the front-back position of the clipper type cutting blade apparatus 30 located in a line at random.

  Further, the left and right clipper type cutting blade devices 30 can be easily detached from the work vehicle by being removed from the plate 53 provided at the right end of each clipper type cutting blade device 30 and the bracket 42 provided at the left end. By removing the left and right hair clipper type cutting blade devices 30 from the work vehicle and using them individually, there are various cases such as when the hair clipper type cutting blade device 30 is provided on the work vehicle and when it is used separately from the work vehicle. Can be used. Therefore, the use application of the clipper type cutting blade device 30 is expanded and convenient.

Further, each clipper type cutting blade device 30 is provided with an engine 31 as a driving source for driving the cutting blade 27, thereby further increasing the engine horsepower for driving the clipper type cutting blade device 30. This improves the work efficiency of the pinching operation. And by arranging each engine 31 on the same side of the left and right sides of each clipper type cutting blade device 30, that is, by arranging the arrangement of the engine 31 of each clipper type cutting blade device 30 on one side, The movement distance of the worker to the engine 31 at the time of starting can be shortened. Therefore, the burden on the operator is reduced. In the illustrated example, the engine 31 of each clipper type blade device 30 is disposed on the left side, but may be disposed on the right side.
The engine 31 may be a motor type or battery type two-cycle engine. Moreover, since it is set as the structure which does not take the motive power which drives the cutting blade 27 from the body side, a structure becomes simple and attachment / detachment of each clipper type cutting blade apparatus 30 becomes easy.

Further, the starter knobs 31 a of the left and right engines 31 are arranged at a position slightly ahead of the front end portion of the cutting blade 27 and away from the cutting blade 27.
By arranging the starter knobs 31a of the left and right engines 31 at the same position, it is easy for the operator to understand, and since the starter knobs 31a are pulled in the same direction, the starter knobs 31a are easily pulled, and the force required to start the engine 31 can be reduced. And the movement distance at the time of starting the left and right two engines 31 can be short. Furthermore, by separating the positions of the starter knobs 31a of the left and right engines 31 from the cutting blade 27, it is excellent in terms of safety. That is, since the starter knob 31a is held in hand and pulled vigorously, it is safer to be away from the cutting blade 27.

Moreover, each clipper type cutting blade apparatus 30 is good also as a structure which can each slide the support frame 40 in the left-right direction (arrow R direction) independently. The fixing nut 47 under the under plate 43 that supports and fixes the bracket 42 is loosened, and the bracket 42 is slid to an arbitrary position of the support frame 40 and installed.
The position of the cutting blade 27 of the clipper type cutting blade device 30 is optimally slid by moving the clipper type cutting blade device 30 in the left-right direction, depending on the distance between the streaks of the crop, the number of streaks, the degree of leaf or stem dispersal, etc. By adjusting the position, the pinching operation can be performed with high accuracy.

  Then, by sliding the left and right hair clipper type blade devices 30 simultaneously, each hair clipper type blade device 30 can be moved to an arbitrary arrangement. By loosening the nut 47 and sliding the three brackets 42 simultaneously, the cutting blade 27 of the hair clipper-type cutting blade device 30 can be selected according to the distance between the streaks of the soybean, the number of streaks, the degree of leaf and stem dispersal, etc. The centering position can be adjusted to the optimum position and the pinching operation can be performed with high accuracy.

Further, each clipper type blade device 30 has the same arrangement relationship between the engine 31 and the blade 27, and a plurality of such clipper type blade devices 30 are shifted in the front-rear direction and arranged at the same height. It is good also as a structure which plucks two crops of crops simultaneously.
Cost reduction can be achieved by using the same clipper-type cutting blade device 30. Further, by aligning the height of each clipper type cutting blade device 30, the accuracy of pinching can be increased and the occurrence of uneven growth can be prevented.

Then, when each clipper type cutting blade device 30 is arranged to be shifted back and forth, the starting point S1 (on the engine 31 side) of the cutting blade 27 of the rear side clipper type cutting blade device 30 is set so as not to cause crop residue. The left and right positions of the end point S2 (the end portion on the plate 53 side) of the cutting blade 27 of the front clipper type cutting blade device 30 may be matched.
Each clipper type cutting blade device 30 is connected to the bracket 42 on the left end side and connected to the plate 53 on the right end side, and is supported by the bracket 42 and the plate 53. By changing it, the mounting position can be easily changed.

  Then, by matching the left and right positions of the start point S1 of the cutting blade 27 of the rear clipper type cutting blade device 30 and the end point S2 of the cutting blade 27 of the front side clipper type cutting blade device 30, uncut crops are generated. Can be prevented. For example, even if uncutting occurs near the end point S2 of the cutting blade 27 of the front clipper type cutting blade device 30, cutting can be performed near the starting point S1 of the cutting blade 27 of the rear side clipper type cutting blade device 30. Therefore, the pinching accuracy is increased.

Further, when the center of gravity W of each clipper type cutting blade device 30 is fixed to the bracket 42 supported by the support frame 40 and installed, the working posture of the clipper type cutting blade device 30 is stabilized. Further, the weight of the bracket 42 can be reduced. Since the clipper-type cutting blade device 30 does not tilt stably, the bracket 42 is slid when the distance L between the center portions in the left-right direction of the cutting blades 27 of the adjacent clipper-type cutting blade device 30 is adjusted to the distance between the stripes. It becomes easy to perform the work when making it.
In this embodiment, the center part of the gear case 63 of the clipper type cutting blade device 30 is located at the center of gravity W, and the bracket 42 is used to fix the gear case 63 from below using fixing means such as bolts 45 and nuts 47. It is the structure which supports.

  And when step 69 (FIG. 2) for getting on and off the cockpit 5 is provided in the work vehicle, the engine 31 of the clipper type cutting blade device 30 is preferably arranged on the attachment side (left side in the illustrated example) of step 69. . When the operator starts the engine 31 of the clipper type cutting blade device 30, the moving distance from the cockpit 5 to the engine 31 is the shortest, so that the operability of the clipper type cutting blade device 30 is improved and the operation of pinching work is performed. Efficiency is also increased.

When the starter knob 31a of the engine 31 of the clipper type cutting blade device 30 is disposed on the attachment side (left side in the illustrated example) of the step 69, that is, provided on the left side of the engine 31, it turns around to the opposite side of the body T from the boarding / exiting side. Without getting in and out of the airframe T, starting and stopping of the engine 31 can be easily performed in the shortest distance. And it becomes easy to start and stop the clipper-type cutting blade device 30.
Further, when the engine 31 and the starter knob 31a of each of the clipper type cutting blade devices 30 of the plurality of clipper type cutting blade devices 30 are aligned on the attachment side (left side in the illustrated example) of the step 69, the clipper type cutting blade device 30 is arranged. Improved operability.

  Further, since the terminal portion (right side) of the cutting blade 27 of each clipper type cutting blade device 30 is supported by the plate 53, the cutting blade 27 can be prevented from moving up and down due to the pulsation of the engine 31. Since 7 does not shake, the cut surfaces (cutting edges) in the cropping (cutting) operation of the crop are aligned and can be cut cleanly.

  The plate 53 that fixes and supports the terminal portion (right side) of the cutting blade 27 of the left clipper type cutting blade device 30 is provided on the bracket 42 that supports the right clipper type cutting blade device 30. By supporting the terminal portion of the cutting blade 27 with the small-sized plate 53, the support structure becomes light and compact, and the cutting operation by the cutting blade 27 is not hindered. Further, since there is no large device such as the engine 31 or the gear case 63 on the terminal end side (right side) of the hair clipper type blade device 30, it is easy to support the hair clipper type blade device 30.

  Further, the left hair clipper type cutting blade device 30 is fixed on the bracket 42 at the gear case 63 portion where the center of gravity position W is located, and the terminal portion S2 of the cutting blade 27 is located at the center of gravity position W of the right hair clipper type cutting blade device 30. The plate 53 is provided and supported from the bracket 42 for fixing the gear case 63.

  By fixing the center of gravity position W of the hair clipper type cutting blade device 30 on the bracket 42, the posture of the hair clipper type cutting blade device 30 is stabilized and the balance is improved. As a result, the support structure becomes light and compact. Further, by fixing and supporting the clipper type cutting blade device 30 with the bracket 42 and the plate 53, the vertical swing of the cutting blade 27 is reduced, and the cutting surface (cutting edge) in the cropping (cutting) operation of the crop is sharpened. And it becomes possible to finish beautifully.

Further, since the plate 53 that supports the terminal portion of the cutting blade 27 of the clipper type cutting blade device 30 is provided on the bracket 42 having a slide function, the distance between the left and right center portions of the left and right clipper type cutting blade devices 30 is provided. L can be easily adjusted to the distance between crops.
That is, it is only necessary to loosen only the fixture between the bracket 42 and the support frame 40 and slide the bracket 42 without having to loosen the fixture such as the bolt 45 that fixes the plate 53 and the bracket 42. Can be easily done.

  Then, if a plurality of support holes 54a (FIG. 4) are provided in the cutting blade support member 54 on the terminal end side of the cutting blade 27 of the clipper type cutting blade device 30, each of the clipper type cutting blade devices 30 is a cutting blade alone. Since the arrangement adjustment of 27 can be performed, it is possible to cope with a case where the distance between the streaks of the crop is changed, and it is possible to further improve the adaptability such as the type of crop and the growing condition.

  Further, a resistance guide 50 is provided on the front side of the hair clipper type cutting blade device 30. The resistance guide 50 is used to improve the biting of the crop a into the cutting blade 27 by the reaction when the crop a moves away from the resistance guide 50 during the pinching operation. In addition, when not used as a pinching operation, it becomes a safety guide for preventing an operator from touching the cutting blade 27.

  The left and right ends of the resistance guide 50 are connected to the front end of the bracket 42 provided at the left end of the left clipper-type cutting blade device 30 and the right end of the support frame 40, respectively. In this case, the cutting blade 27 of the clipper type cutting blade device 3 is cut by passing under the resistance guide 50. By providing both ends of the resistance guide 50 connected to the bracket 42 and the support frame 40 of the cutting blade mechanism part K, the mounting portion of the resistance guide 50 does not get in the way, and the cutting edge from the resistance guide 50 is viewed from the operator. 27 is improved, the positional relationship between the resistance guide 50, the crop a and the cutting blade 27 can be easily grasped, and the workability is improved.

  Further, the resistance guide is shifted from the position of the cutting blade 27 to the front side so that the resistance guide 50 is not positioned above the cutting blade 27 of the left and right clipper type cutting blade devices 30 (position overlapping in plan view). 50 is provided. If there is a resistance guide 50 or a support member for the resistance guide 50 above the cutting blade 27 of the left and right clippers type cutting blade device 30, the remaining leaves of the crop cut by the cutting blade 27 are caught by the resistance guide 50, and the cutting blade Although this may affect the cutting performance of 27, such a situation can be prevented.

FIG. 9 shows a diagram of a connecting portion between the resistance guide 50 and the bracket 42 of the work vehicle shown in FIG. 9A shows a perspective view of a connecting portion between the resistance guide 50 and the bracket 42, and FIG. 9B shows a plane of the connecting portion between the triangular plate 60 and the plate 55 in FIG. 9A. The figure is shown.
The resistance guide 50 provided in front of the cutting blade 27 of the left and right hair clipper type cutting blade devices 30 is configured to rotate in the vertical direction (arrow B direction) with a connection portion (connection arm 51) with the bracket 42 as a rotation fulcrum. is there. As shown in FIG. 9, one end portion of the support arm 57 is fixed to the front end portion of the left and right sides (or left and right center portions) of the bracket 42, and the resistance guide is attached to the other end portion of the support arm 57. The other end of the connecting arm 51 that fixes and supports 50 is fixedly connected.

  The tip of the resistance guide 50 is inserted in the radial direction of the connecting arm 51, and the protruding portion protruding rearward of the connecting arm 51 is fixedly connected to one end (corner) of the triangular plate 60. The triangular plate 60 is provided with an arc-shaped long hole 60 a so as to connect two end portions different from the connection side end portion with the connection arm 51. One end of the plate 55 is fixed to the left and right front ends of the bracket 42, and a hole 55 a provided with a screw portion 59 a of a fixture such as a pin 59 at the other end of the plate 55 and the triangular plate 60. The triangular handle 60 and the plate 55 are fixed and connected by being inserted into the long hole 60a and turning the fixing handle 58 and tightening with the nut 47 from the back side of the triangular plate 60. By operating the fixing handle 58 to tighten or loosen the pin 59, the mounting position of the plate 60 and the plate 55 can be changed, and the mounting angle of the resistance guide 50 can be adjusted.

  That is, the attachment position of the triangular plate 60 and the plate 55 can be changed within the range of the longitudinal direction (arrow A direction) of the long hole 60a of the triangular plate 60, and the resistance guide 50 can move in the vertical direction (with the connecting arm 51 as a pivot point). It can be rotated in the direction of arrow B). The connecting arm 51 may be configured such that a hollow pipe (or rod-like member) 51b having a small diameter is fitted into a hollow pipe 51a having a large diameter. When changing the mounting position of the plate 60 and the plate 55, the connection between the hollow pipe 51b having a small diameter and the hollow pipe 51a having a large diameter is loosened to adjust the height of the resistance guide 50, and then the diameter is reduced. It is preferable that the connection between the hollow pipe 51b and the hollow pipe 51a having a large diameter is tightly fixed.

In the cropping work, an appropriate positional relationship between the resistance guide 50 and the cutting blade 27 is necessary. By cutting the resistance guide 50 in the vertical direction in this way, the cutting performance of the cutting blade 27 is brought to an optimum position. A resistance guide 50 can be arranged.
As a procedure, first, the cutting blade up / down rotation handle 73 is rotated according to the location where the crop a is to be cut to rotate the cutting blade 27 up and down to set the height in the vertical direction. And the position of the up-down direction of the resistance guide 50 is adjusted with respect to the clipper type cutting blade apparatus 30 after the vertical height is adjusted. As described above, since the crop I bites into the cutting blade 27 with the return force when the crop I moves away from the resistance guide 50, the position is set so that it is easy to bite. Since the return moment of the crop a differs depending on the thickness of the stem of the crop a, the appropriate position of the resistance guide 50 is determined while working first.

FIG. 10 shows a front plan view when the shape of the resistance guide of the work vehicle of the present embodiment is changed.
And also in the resistance guide 50 provided with the bending part shown in FIG. 10, similarly to the linear resistance guide 50, the structure which manually rotates the resistance guide 50 provided in front of the clipper-type cutting blade device 30 up and down. Then, by fixing the resistance guide 50 at an arbitrary height, the resistance guide 50 can be installed at an appropriate height according to the growth degree of the crop to be pinched, and high cutting performance can be exhibited.

  Further, the left and right clipper type cutting blade devices 30 can be easily detached from the work vehicle by being detached from the plate 53 and the bracket 42. When the left and right hair clipper-type cutting blade devices 30 are removed from the work vehicle and used individually, handles 61 (FIG. 2) provided on the left and right sides (the engine 31 side and the rear side of the cutting blade 27) with the bracket 42 interposed therebetween. ) And used as a manual clipper-type cutting blade device 30.

By adopting this configuration, various methods of use are possible, such as when the clipper-type cutting blade device 30 is provided on the work vehicle and when it is detached from the work vehicle and used alone. Therefore, the use application of the clipper type cutting blade device 30 is expanded and convenient.
When the clipper blade device 30 is used alone, the handles 61 are preferably provided on both the left and right sides so as to be substantially the same distance with the gear case 63 at the center of gravity W of the clipper blade device 30 as the center. When used as a manual clipper-type cutting blade device 30, since the gear case 63 at the center of gravity of the device hits the operator's waist, the handle 61 is arranged evenly on the left and right sides of the gear case 63 to balance the weight during operation. Becomes better and less tired.

In FIG. 11, the perspective view of the attachment part at the time of providing the handle 61 in the clipper type cutting blade apparatus 30 is shown.
Further, the handle 61 provided on the rear side of the cutting blade 27 of the clipper type cutting blade device 30 and the handle 61 provided on the engine 31 are provided by raising a handle post 65 for attaching the base of the handle 61 in the vertical direction. You may provide in the direction of about 90 degree | times so that it may orthogonally cross with respect to.

  When a work vehicle is used as a tipping device for crops such as soybeans, the handle post 65 of the handle 61 is set up in a vertical direction with respect to the cutting blade 27 provided in the horizontal direction. The position of the handle 61 can be made higher than the position. Therefore, the leaves cut by the cutting blade 27 of the clipper type cutting blade device 30 are prevented from accumulating on the handle 61, and can easily fall to the ground. Therefore, the cutting accuracy of the cutting blade 27 of the clipper type cutting blade device 30 can be stabilized.

  Further, by adopting the configuration of the handle post 65 and the handle 61 as shown in FIG. 11 for each clipper type cutting blade device 30, two workers can perform manual cutting work of the clipper type cutting blade device 30. Goes up. Further, when a plurality of clipper type cutting blade devices 30 are provided on a work vehicle and used as a crop centripetal device, the remaining leaves are located on the handle post 65 part over the entire cutting blade 27 of the clipper type cutting blade device 30. Stable cutting work is possible without accumulating.

  The present invention may be shared with a work vehicle that disperses a medicine or the like equipped with a medicine spreader, and may be used as a medicine spreader.

DESCRIPTION OF SYMBOLS 1 Body frame 2 Mission case 3 Front wheel 4 Rear wheel 5 Pilot seat 9 Steering handle 11 Bonnet 15 Horizontal frame 17 Vertical frame 18 First arm 18 'Second arm 19 Lifting rod 20 First cylinder 21 Connecting member 23 Second cylinder 24 Connection Support frame 25 Cutting blade vertical movement device 25a Adjuster 25b Rod 25c Tube 27 Cutting blade 27a Upper blade 27b Lower blade 29 Third cylinder 30 Hair clipper type cutting blade device 31 Cutting blade driving engine 31a Starter knob 33 Left and right frame 40 Support frame 40a Scattering Nozzle 42 Bracket 43 Under plate 45 Bolt 46 Support member 47 Nut 48 Shaft 49 Connection member 50 Resistance guide 51 Connecting arm 53, 55 Plate 54 Cutting blade support member 54a Support hole 55a Hole 57 Support arm 58 Fixing handle 59 Pin 59a Screw part 60 Triangular plate 60a Long hole 61 Handle 63 Gear case 65 Handle post 69 Step 70 Position sensor (tilt sensor)
73 Up / Down Rotating Handle 80 Fixing Tool 83 Compressor 85 First Compressed Air Blow Pipe 87 Second Compressed Air Blow Pipe 89 Air Blowout E Engine K Cutting Blade Mechanism

Claims (2)

Traveling device (3, 4);
A cockpit (5) provided on the traveling device (3, 4);
A cutting blade (27) provided in front of the cockpit (5) and having a longitudinal direction in the left-right direction toward the forward direction of the traveling device (3, 4) to cut the upper part of the crop. A plurality of cutting blade devices (30), the front and rear positions of each cutting blade device (30) are shifted, and between the left and right of the central portion (C) in the left-right direction of the cutting blade (27) of each adjacent cutting blade device (30) A working vehicle comprising a cutting blade mechanism (K) arranged so that the distance (L) is substantially the same as the distance between the streaks of the crop.   Each cutting blade device (30) is provided with a driving source (31) for driving the cutting blade (27), and each driving source (31) is directed in the forward direction of the traveling device (3, 4). The work vehicle according to claim 1, wherein the work vehicle is arranged on the same side of the left and right sides of each cutting blade device.

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