JP2006006267A - Crop stem cutting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crop stem cutting machine capable of solving such problems that a grooving blade is positioned on a lower side of a conveying mechanism in a conventional tobacco harvesting machine and an interval between a grooving blade position and a leaf part is increased, therefore the leaf part is positioned extremely low when the stem is hung upside down and dried, and consequently drying efficiency of the stem is deteriorated and simultaneously the leaf part is stained because of touching on the ground, and that the stem is nipped on an upper side thereof and made to be a free state on a lower side in the conventional machine, therefore the stem is thrust and shifted away when the blade makes contact with the stem for grooving the stem, and consequently a groove having a prescribed depth is not stably formed in a prescribed position. <P>SOLUTION: This crop stem cutting machine has a nipping and conveying unit 4 which is structured so that a pair of right and left conveying endless belts 3, 3 are backward extended, wherein a cutting unit 6 which faces a conveying passageway 5 is provided in a lower front area of the nipping and conveying unit 4, the grooving blade 7 which is inclined, has a blade edge facing downward, and faces the conveying passageway 5 is provided in an upper rear area of the unit 4, and a conveying endless belt 8 is positioned on at least one side of an upper space of the grooving blade 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The invention of the present application is a harvesting machine for crops consisting of relatively long trunks, such as tobacco, and dries leaves that grow and grow on the upper part of the trunk in the transporting process of harvesting and harvesting the plant side. Therefore, it is a technique related to a crop trunk mower provided with a groove cutting blade for cutting a groove through which a hanging string for hanging the trunk upside down is passed.

Conventionally, for example, the technique disclosed in Japanese Utility Model Laid-Open No. 5-34830 discloses a technique in which the left and right guide rods are formed following a pair of left and right guide rods formed at the front of the traveling vehicle body. A scraping conveyance mechanism using a pair of belts is provided, and a cutting blade for cutting and a groove cutting blade for forming a string threading groove are provided below the conveyance mechanism. The tobacco stem cutting harvester harvests the trunk of the cigarette with the transport mechanism, cuts it with the front cutting blade, and cuts the groove with the subsequent groove cutting blade. Thus, as shown in the accompanying drawing (see FIG. 11) of the publication, the trunk of the cigarette is cut at the lower part with a groove for passing the string diagonally with respect to the trunk body. Can be hung upside down through.
Japanese Utility Model Publication No. 5-34830

  The conventionally known devices described in the above-mentioned publications are extremely effective devices with a configuration that can sufficiently exhibit the purpose, function, and effect aimed at.

  However, in the known technique, the groove cutting blade is provided on the lower side of the scraping and conveying mechanism constituted by a pair of left and right belts, so that the distance between the position of the groove and the upper leaf portion is long ( When the tobacco trunk is hung upside down after harvesting, there is a problem that the position of the leaf part becomes too low and the leaf part gets on the ground and gets dirty.

  Further, the known technique conveys the cigarette trunk while holding the upper part of the cigarette, and the lower side is clipped to become a free end and is conveyed in a free state hanging from the conveying chain. When the cutting blade hits the trunk, it may be pushed and escape, and there is a problem that it cannot be cut to a stable groove position and groove depth.

  For this purpose, the invention described in claim 1 of the present application is a pair of left and right transports that sandwich and transport crops behind the pair of left and right weed fences 2, 2 provided at the front of the traveling vehicle body 1. The endless belts 3 and 3 are arranged to extend the rearwardly, and the nipping and conveying device 4 is configured. The front and lower side of the nipping and conveying device 4 has a cutting device 6 facing the conveying path 5 and further to the upper rear side. The groove cutting blades 7 for cutting the grooves are provided in the trunk of the crop that is conveyed so as to face the conveying passage 5 so that the grooves can be driven, and the groove cutting blades 7 are inclined in a front view with the conveying passage 5 side down. The crop trunk is configured to be provided with an endless belt 8 that is supported on one side and transports the trunk of the crop that is provided above the grooving blade 7 and that faces the grooving position. A mower is used.

  Next, in the invention described in claim 2, a guide guide 10 is provided on the side where the transport endless belt 8 faces the side that supports the crop, and the guide guide 10 supports the crop trunk on the grooving position side. It is set as the structure supported, It is set as the crop trunk mower of Claim 1 characterized by the above-mentioned.

  Next, in the invention described in claim 3, the transport device 9 disposed above the groove cutting edge 7 forms a wide interval (H) between the transport chain 8 and the guide guide 10 at the transport start end portion, The crop stem-cutting machine according to claim 2, wherein the gap (h) between the two is arranged close to the position of the groove cutting by the groove cutting blade 7 to strengthen the pinching action.

  First, the invention described in claim 1 is a grooving operation where the trunk of the cigarette is transported in a state where both the upper side and the lower side of the portion where the grooving blade acts are held. Therefore, the grooving action is performed stably, there is almost no variation in the position and depth of the grooves, and the drying operation after harvesting is performed appropriately. In addition, since the present invention can be opened without any particular member at the upper part of the grooving position, the grooving blade can be grooved at a position closer to the leaf portion growing above the grooving blade. can do. Accordingly, when the tobacco trunk is hung upside down after harvesting, there is an effect that the problem of the conventional type can be solved, such as the position of the leaf part becomes too low and the leaf part gets on the ground and becomes dirty.

  According to the second aspect of the present invention, the upper side of the grooving position of the tobacco trunk that is cut and transported is formed by the guide guide 10 so that the leaf portion that grows above the grooving blade is used. Although both the upper and lower sides are clamped while being able to be grooved at a close position, even if the driven grooving blade hits, it does not escape, and grooving can be performed accurately.

  And since the space | interval of the start end part of the conveying apparatus in an upper side is wide according to the invention described in Claim 3, a trunk of a cigarette, especially the upper part close | similar to a leaf part becomes easy to be induced | guided | derived to the inside of a conveying apparatus. There is a feature that can be smoothly transported. And when the conveying device is close to the groove cutting blade, the conveying chain and the guide guide are brought close to each other and the interval is narrowed, and the conveying device has a strong clamping force. This presents a unique effect that can reliably and stably perform the grooving action.

  Embodiments of the present invention will be specifically described below with reference to the drawings.

  The present invention is a crop trunk cutting machine that harvests and harvests tobacco trunks, and in the process of transporting tobacco trunks growing on the straw in a field in a sandwiched state by the sandwiching and transporting device 4, A cutting harvester that cuts the root of the side with the cutting device 6 and cuts and harvests a groove through which the string for hanging upside down is dried on the trunk of the cigarette on the side closer to the leaf part above the clamping position. is there.

  First, as shown in FIGS. 1 to 3, the traveling vehicle body 1 is configured such that a pair of left and right front wheels 11, 11 and rear wheels 12, 12 are provided as shafts and travels by rear wheel drive. In this case, as shown in FIG. 2, the rear wheels 12, 12 divide the traveling power from the first engine 13 mounted on the rear part of the traveling vehicle body 1 via the traveling mission device 14 into both the left and right sides. It is configured to be transmitted from the first transmission case 15 to the left and right sides via the second transmission case 16.

  On the other hand, as can be seen from the drawing, the front wheels 11 and 11 can travel while supporting the traveling vehicle body 1 by pivotally mounting the base portion on the front end portion of the front wheel support rod 17 pivotally attached to the lower front portion of the traveling vehicle body 1. It is configured. In the case of this embodiment, the front wheel support rod 17 is configured to be adjustable, and the height of the front portion of the traveling vehicle body 1 can be freely adjusted by adjusting the front wheels 11 and 11 up and down. ing.

  As shown in FIG. 2, the front wheels 11, 11 and the rear wheels 12, 12 are respectively connected to the base portion of the front wheel support rod 17 and the base portion of the second transmission case 16 and protrude downward. The lower ends of the arms 18, 18 are connected by a linkage 19, and the ground angle between the front wheel support rod 17 and the second transmission case 16 is changed by rotating the vertical adjustment handle 20 at the rear of the vehicle body. The vehicle height can be adjusted.

  In the present embodiment, a mechanism for adjusting the vertical position by manual operation as described above is adopted. However, a sensor for detecting the attitude of the vehicle body to the ground and a hydraulic mechanism for driving the wheels up and down are provided for automatic control. You can also.

  In this way, the traveling vehicle body 1 determines the work position (the position of the cutting height, which will be described later) in accordance with the height of the culm in the field by adjusting the heights of the front wheels 11, 11 and the rear wheels 12, 12. Things that can be done.

  Reference numeral 21 denotes a left and right handle, which has a configuration in which operation levers of each part are concentrated around the handle.

  As shown in FIG. 2, the first engine 13 described above is configured to take rotational power from the traveling mission device 14 side to the front side and transmit each of the conveying devices described later. Therefore, the sandwiching and conveying device 4 and other conveying devices, which will be described later, have the advantage of being able to convey the trunk of a cigarette that is transmitted in a vehicle speed tracking type and automatically shifted to a speed according to the work efficiency (traveling speed). .

  Next, main working devices of the present embodiment will be described.

  First, as shown in FIGS. 1 to 3, the traveling vehicle body 1 is provided with a pair of left and right weed baskets 2, 2 on the left and right sides of the front part, and is moved close to its rearward position so that it is transported in two upper and lower stages. 9 and 4 are provided. In this case, as shown in FIGS. 1 to 4, the sandwiching and transporting device 4 arranges the transport start end portions of the pair of left and right sandwich transport chains 3 and 3 so that the front end portions are opened in a square shape in plan view. Approaching the lower rear position of the weed ridges 2 and 2 and approaching the extension from the middle part to the rear so that the trunk W of the tobacco planted on the ridge U can be clamped from both left and right sides The configuration is provided. And the conveyance path 5 currently described in this specification has pointed out the path | route which the trunk W passes between the clamping conveyance chains 3 and 3 on either side as mentioned above.

  The sandwiching and transporting device 4 employs a configuration in which the transporting claws 3a and 3b of the pair of left and right sandwiching and transporting chains 3 and 3 are opposed to each other with a half pitch shift, although not shown. The pair of left and right nipping and conveying chains 3 and 3 may be configured such that the nipping width can be adjusted by shifting the half-pitch length chain in the traveling direction (front-rear direction).

  As described above, the pair of left and right nipping and transporting chains 3 and 3 can be securely clamped even when the diameter of the trunk is small by sandwiching the trunk by shifting the opposing transport claws 3a and 3b by a half pitch. In addition, there is a feature that can be pinched and conveyed accurately. And when the structure which shifts this by half pitch is employ | adopted, the clamping conveyance chains 3 and 3 have the characteristics which can work | operate, adjusting the clamping width corresponding to the diameter of the trunk of a tobacco.

  Next, as shown in FIGS. 1 and 2, the reaping device 6 is provided with a disk cutting blade pivoted immediately below the holding and conveying device 4, and the edge portion of the cutting device 6 is disposed on the holding and conveying device. The trunk can be trimmed while facing the conveyance path 5 formed in FIG. In addition, 6a has shown the 2nd cutting blade which cut | disconnects the remaining trunk which was cut away with the cutting device 6. FIG.

  As shown in FIGS. 1 to 3, the groove cutting blade 7 has two disk cutting blades that are thickened at the cut end, and the conveying path 5 side is low, and the shaft is tilted in a front view. Thus, it is configured such that a kerf can be formed obliquely downward in the trunk direction with respect to the tobacco trunk that is provided and conveyed. In addition, this kerf is used for the groove | channel through which the hanging string for hanging upside down is passed when drying a trunk after harvesting.

  The groove cutting blade 7, the cutting device 6, and the second cutting blade 6 a are obtained from a second engine 13 a mounted on the left side of the front portion of the traveling vehicle body 1 as can be seen from FIGS. 1 to 3. It is configured to be transmitted through a series of transmission mechanisms. Usually, in this type of work machine, the driving load accompanying cutting requires a much larger driving load than the driving driving load and the load accompanying nipping and conveying. It is configured to be driven by a second engine 13a mounted separately. As described above, the stem mower according to the embodiment of the present invention is configured so that the cutting load is not affected by traveling and conveyance, and the entire operation is smoothly performed by mounting the two engines and driving them in a shared manner. And work efficiently.

  Next, the conveying device 9 is provided at a position above the nipping and conveying device 4 and the groove cutting blade 7, the conveying chain 8 is wound on one side, and the guide guide 10 is provided along the opposite side. .

  In the case of the embodiment in which the transport device 9 is configured as a device that transports the cigarette trunk in a sandwiched state with the transport chain 8 and the guide guide 10 facing each other at a position above the sandwich transport device 4, the guide guide 10. Is configured to be able to cope with the size of the diameter of the trunk.

  And the conveying apparatus 9 comprised from the above-mentioned conveyance chain 8 and the guide guide 10 makes the space | interval (H of both) the conveyance part from a conveyance start end part to the front of the groove cutting blade 7 as shown in FIG. ) Is formed widely, and when it reaches the vicinity of the grooving position by the grooving blade 7 on the lower conveyance side from that position, the distance (h) between the two is approached, and the trunk being conveyed is placed on both the left and right sides It is set as the structure which can be pinched and conveyed from.

  As shown in FIG. 4, the guide guide 10 constitutes a series of guide mechanisms by connecting two of the start end guide 10 a and the end guide 10 b on the transport path 5. In other words, the guide guide 10 has a portion having a wide interval (H) with the transfer chain 8 as a start end guide 10a, and a portion arranged close to the interval (h) as an end portion guide 10b. The material is configured to be separately tensioned on the conveyance chain 8 side. The end portion guide 10b is provided so as to extend long rearward as shown in FIG. 3 so that the trunk after grooving can be conveyed so as to eliminate overturning while being supported above the kerf.

  As described above, the guide guide 10 includes the start end guide 10a and the end end guide 10b which are separately formed and individually repelled on the transport chain 8 side. It has a feature that it is transported and no longer has an adverse effect on each other.

  Further, in the conventional apparatus of this type, there is no member corresponding to the guide guide 10 that guides the trunk being conveyed so as not to fall down to the discharge port 23 as in the case of the present embodiment. In the conveyance process, there was a case where it was broken from a kerf portion that was weak in strength, and there was a loss that did not become a product.

  On the other hand, as described above, the present plan is characterized in that the guide guide 10 is extended to the vicinity of the discharge port 23 to prevent the trunk from being bent and the loss is extremely reduced. In the embodiment, the guide guide 10 is provided so as to extend to a position equivalent to the conveyance end portion of the nipping and conveying apparatus 4 in the lower position, and the upper portion of the trunk is maintained while the nipping and conveying apparatus 4 continues to convey. It is configured to support.

  In the embodiment shown in FIGS. 5 to 7, the side where the transmission case 22 supporting the groove cutting edge 7 is supported (the left side in the advancing direction) is not provided with any conveyance chain or guide guide on the upper side. On the opposite side of the conveyance path 5 between the nipping / conveying chain 3 (left side) and the upper position The upper end and lower end belts (transport chains) 8 are provided on the upper and lower sides.

  Thus, in the case shown in FIG. 1, the conveyance endless belt 8 is provided only on the side corresponding to the groove cutting edge 7 so that the position of the groove and the leaf growing on the upper part of the trunk can be approached. There is. In addition, when the groove cutting blade 7 is pressed to cut the groove, the trunk of the cigarette cannot escape because the two upper and lower sides on the opposite side are received by the transport belt. In addition, the groove is cut in a stable state.

  As shown in FIGS. 1 and 4, the transport chain 8 has only a lower transport claw from which the upper transport claw (corresponding to a chain transport lug) is removed. If comprised in this way, since the conveyance chain 8 can engage and convey the position which approached the leaf growing on the trunk of a cigarette, the kerf which lets the string for suspension pass in the part near a leaf There are features that can be formed.

  Next, as shown in FIGS. 6 and 7, the fall prevention guides 25 a and 25 b are provided at the entrances of the right and left discharge passages 24 a and 24 b provided continuously to the end of the discharge port 23. It is provided so as to be pivotally attached to the frame so as to partition the discharge passages 24a and 24b and switch the opening. Therefore, the fall prevention guides 25a and 25b have the advantage that the discharge passages 24a and 24b can be freely switched, and have the advantage that the tobacco trunk can be discharged from either the left or right side. There is a feature that can be released from both.

  The fall prevention guides 25a and 25b are collected at the discharge port 23 and the start end of the discharge passage 24 if one of them is closed when the auxiliary worker is not in time for receiving or taking out or when two or three trunks are to be assembled. There is an advantage that can be summarized.

  As shown in FIG. 3, the discharge guide 28 according to another embodiment is formed in a circular arc shape at a portion for receiving the trunk of the cigarette, and can be freely switched to the position of the end portion of the conveyance path 5 in the left-right direction. Is configured. In the case of this configuration, if the discharge guide 28 is directed toward the auxiliary worker who performs the harvesting operation, the trunk of the cigarette is discharged in that direction, so that the work can be performed easily.

  As shown in FIG. 9, the already-described second cutting blade 6a is a disk blade that cuts the upper part of the trunk into a high-cutting state with the cutting device 6 at the front and cuts off the stem on the stock side that remains in the field. Although there is a blade 30 attached to this, the harvested trunk jumps away. Therefore, the harvested trunk is skipped away from the trimming position, and does not stay on the traveling vehicle body 1 side, so that there is an advantage that it is not wound around the rotating part or caught between the guides.

  Reference numeral 31 denotes a guide member that guides the stocker-side trunk to the second cutting blade 6a.

  As described above, in the embodiment according to claim 1 of the present invention, after cutting, the trunk of the cigarette is conveyed in a state where both the upper side and the lower side of the portion where the groove cutting blade 7 acts are held. Therefore, the grooving action can be performed in a very stable state. Therefore, in the embodiment, there is almost no variation in the position of the groove and the depth of the groove, and the drying operation after harvesting is performed accurately. And, since the distance between the position of the kerf cut by the groove cutting blade 7 and the leaf growing on the upper side approaches the embodiment of the present plan, the position of the leaf becomes higher when hung upside down, The drying efficiency can be increased, and the leaves are not soiled due to grounding.

  Next, in the embodiment according to claim 2 of the present invention, since the trunk of the tobacco that is cut and transported is sandwiched both at the top and bottom, it escapes even if the driven groove cutting edge 7 hits. Therefore, the groove position and the groove depth are always stable because the groove can be accurately cut.

  Next, in the embodiment according to claim 3 of the present invention, the interval between the starting end portions of the transport device 9 on the upper side is widened, so that the trunk of the cigarette, in particular, the upper part close to the leaf portion is inside the transport device 9. It is easy to be guided to the surface and can be smoothly conveyed. When the conveying device 9 is close to the groove cutting edge 7, the conveying chain 8 and the guide guide 10 are brought close to each other to narrow the interval, and the holding force of the conveying device 9 is strengthened. It is a peculiar feature that the grooving action can be performed reliably and stably in a state of being sandwiched between the two.

Cut front view of main parts Partially broken side view Plan view of main parts Plan view of main parts Cut front view of main parts Plan view of main parts Partially broken side view plan view

Explanation of symbols

1 Traveling vehicle body 2, 2 split grass cage 3, 3 transport endless belt (nipping transport chain)
4 Nipping and Conveying Device 5 Conveying Path 6 Mowing Device 7 Groove Cutting Edge 8 Conveying Endless Belt (Conveying Chain)
9 Transport device 10 Guide guide.

Claims (3)

  A pair of left and right transport endless belts 3 and 3 for sandwiching and transporting crops are disposed behind the pair of left and right weed fences 2 and 2 provided at the front portion of the traveling vehicle body 1 so as to extend rearward. The apparatus 4 is configured, and a cutting device 6 is disposed on the lower side of the front portion of the sandwiching and conveying device 4 so as to face the conveyance path 5, and further on the trunk of the crop that is conveyed on the rear upper side so as to face the conveyance path 5. A groove cutting blade 7 for cutting the groove is provided so as to be able to be driven, and the groove cutting blade 7 is provided so as to be inclined in a front view with the conveying path 5 side down, and above the groove cutting blade 7. A crop trunk cutting machine configured to provide a transport endless belt 8 for supporting and transporting a crop trunk on one side opposite to the grooving position.   The guide guide 10 is provided on the side of the transport endless belt 8 facing the side that supports the crop, and the guide guide 10 is configured to support the trunk of the crop on the grooving position side. The crop trunk mower according to 1.   The conveying device 9 disposed on the upper side of the groove cutting blade 7 forms a wide interval (H) between the conveyance chain 8 and the guide guide 10 at the conveyance start end portion, and near the groove cutting position by the groove cutting blade 7 described above. The crop stem cutter according to claim 2, wherein the distance (h) between the two is arranged close to enhance the pinching action.

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