JP4620297B2 - Cutting device of tea plantation machine - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a cutting blade exchange structure of a pruning device of a tea garden working machine that performs pruning and pruning operations of tea branches while running along a tea plantation planted in a strip shape.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. 2001-169637 discloses a cutting blade replacement structure for a tea plantation machine. In addition, what is called a cassette blade replacement system is also available that can replace a cutting blade and a pruning cutting blade.
[0003]
[Problems to be solved by the invention]
Japanese Patent Application Laid-Open No. 2001-169637 discloses a sash member (guide bottom plate in the present application) that slidably supports a reciprocating hair clipper-type cutting blade. It is structured to be bolted to the middle frame that is a support. The sash member is attached to the rear of the cutting blade, has a certain length in order to guide the branches and leaves that have been cut and blown off by strong wind to the storage device, and the shape of the slope with the rear end slightly raised, There is considerable size and weight, it is tightened with a large number of bolts, it is not easy to remove.
[0004]
Also, what is called the cassette blade replacement type is a reciprocating motion with a flat steel girder reinforced at the front edge of the guide bottom plate with an inclined surface connected to the rear of the cutting blade, and a screw hole in this part. A cutting blade guide member that slidably supports a clipper-type cutting blade that is slidable is bolted to a girder material at the front edge of the guide bottom plate. Also in this type, the reinforcing girder is strong and heavy, and is tightened with a large number of bolts, so that it is not easy to detach. It is an object of the present invention to provide a cutting blade device that reduces the number of bolts for attachment / detachment as much as possible, is easy to attach / detach, is light, and is firmly assembled.
[0005]
[Means for Solving the Problems]
In order to solve the problems as described above, according to the means of claim 1, “a gate-type body straddling a teacup is attached with a plucking device equipped with a clipper-type cutting blade and planted in a strip shape. In a tea garden working machine that performs plucking and pruning work while traveling along a teacup, the plucking device comprises a clipper-type cutting blade set, a blower pipe that blows off the branches and leaves that have been cut by blowing strong wind, and a plucking device frame The plucking device frame is composed of a guide bottom plate attached to the rear of the cutting blade set, and guide side plates provided on the left and right of the guide bottom plate. The guide bottom plate has a horizontal lower surface and a rear upper portion. It has a triangular cross section with a sharp tip, and the cutting blade set consists of a clipper type cutting blade that reciprocates left and right, a cutting blade guide that holds the cutting blade slidably, and a cutting tool It consists of a blade drive unit Te, the rear of the cutting blade guide that constitutes the cutting blade set, with inserting the distal end portion of the guide bottom plate constituting the plucking device frame, the rear side of the cutting blade guide and V-shaped grooves, sharp tip of the guide base plate " Insert part. " The cutting blade that reciprocates left and right is made up of two upper and lower cutting blades, and in order to hold the two cutting blades slidably, the cutting blade guide is screwed with a slight gap. . A combination of the cutting blade and the cutting blade guide is called a cutting blade set. The cutting blade guide is thin so as not to obstruct the cut leaves and leaves from being fed back and against the surface of the tea plant after plucking. Usually, it is fixed and integrated with a guide bottom plate having a triangular cross section to be connected later, and the strength is maintained. Conventionally, as fixing means, rivets are used and bolts are tightened. Also, there is a type in which a cutting blade guide and a guide bottom plate are integrated by providing a cutting blade guide portion that slidably holds the cutting blade on the front edge of the guide bottom plate. In this case, when the two blades are removed, the blades are separated. It cannot be removed as a cutting blade set in which two cutting blades are adjusted by sliding. If the guide bottom plate is inserted into the rear part of the cutting blade guide as in the present invention, the cutting blade set can be easily removed from the guide bottom plate. Moreover, when both are connected by the method of inserting, it can be set as a very strong structure. Cutting blade guide subsequent guide bottom plate has a triangular shape with a pointed tip of the cross-sectional shape. Therefore, if a V-shaped groove is formed on the rear side of the cutting blade guide and the tip of the triangular guide bottom plate is inserted into the groove, it can be firmly connected over the entire joining surface of the cutting blade guide and the guide bottom plate. Yes, firmly fix the blade guide.
[0006]
According to the second aspect of the present invention, there is used a means that “two short ridges are formed with a thin plate on the rear side of the cutting blade guide, the ridge portion is opened in a V shape, and an acute angle portion of the guide bottom plate is inserted”. It is quite difficult to machine a V-shaped groove on the trailing edge of a cutting blade guide having an arc shape with 3000R. As in the present invention, if two thin plates are attached to the trailing edge of the cutting blade guide in a strip shape and opened in a V shape, a V-shaped groove that can be easily inserted into the tip of the guide bottom plate can be formed. I can do it.
[0007]
According to the third aspect of the present invention, there is used a means that “the removal projection is fixed to the central portion of the reciprocating cutting blade and is detached from the guide bottom plate together with the cutting blade guide”. The width of the tea plantation planted in strips is about 1.8M long. The cross-section of the tea bowl has a branching surface with an arc of 3000R. Therefore, the clipper-type cutting blade that cuts the surface of the teacup has a plate shape of about 50 mm in width and 1.8 M in length, and is curved with a 3000R arc. In order to support the center of this elongated plate-shaped cutting blade, a column is provided at the center on the guide bottom plate side. When plucking work is performed, the trimmed cutting blade is caught on this support and disturbs the plucking work. For this reason, a device for removing branches and leaves is attached in front of this support. In the present invention, in order to dispel the branches and leaves protruding from the support, a protrusion is fixed to the central portion of the reciprocating cutting blade, and this protrusion is vibrated in front of the central support along with the reciprocating motion of the cutting blade. The structure of the shake-off device is simplified by making it possible to detach the shake-off projection together with the cutting blade from the guide bottom plate.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
As a tea plantation machine provided with this cutting blade device, a rail traveling type tea leaf plucking machine that installs rails on both sides of the teacup and performs tea planting operations such as pruning and pruning with a cutting blade while traveling on the rail, There is a riding-type tea leaf picking machine that performs tea plantation while traveling by an endless track type traveling device (called a crawler). Here, an embodiment of the present invention will be described using a riding type tea leaf plucking machine that runs along a teacup by a crawler. FIG. 1 is a side view of a riding tea leaf plucking machine, FIG. 2 is a plan view, and FIG. 3 is a front view. 1 and 2 are crawler traveling devices that travel between the two sides of the teacup 3 with the teacup 3 interposed therebetween. The left and right traveling devices are connected by a gate frame 4. A plucking device to which a clipper-type cutting blade set 5 is attached is installed below the portal frame 4. A blower fan 6 is provided on the portal frame 4 and is connected by a blower pipe 7 and a flexible hose 8 provided in front of the cutting blade set 5. The wind of the blower fan 6 is blown onto the cutting blade set 5 from a number of blown branch pipes 9 attached to the blower pipe 7. A tea bag mounting frame 11 is provided behind the plucking device. The attachment frame 11 is provided with a hook 42 for attaching a tea bag, and the tea bag 10 is opened and attached. Behind this, a tea bag holding plate 12 is provided to hold a tea bag 10 containing the picked tea leaves.
[0010]
Next, the cutting blade device of the present invention will be described. FIG. 4 is a detailed sectional view of the plucking device taken out. FIG. 5 is a sectional view when the cutting blade portion shown in FIG. 4 is removed. FIG. 6 is a detailed cross-sectional view of the central portion of the cutting blade. FIG. 7 is a plan view when the cutting blade portion is removed. FIG. 8 is a front view when the cutting blade portion is removed. The clipper-type cutting blades 13 and 14 are composed of two upper and lower blades, and are slidably attached with bolts 15 using the cutting blade guide 16 as a guide surface. The cutting blades 13 and 14 and the cutting blade guide 16 are curved surfaces of arcs (usually 3000R) that match the surface of the tea tree. A cutting blade drive unit 17 is provided at the end of the cutting blade guide 16. There is a crankshaft in the cutting blade drive unit 17, and the cutting blades 13 and 14 are connected by the crankshaft. The rotation of the crankshaft is changed to a reciprocating motion, and the cutting blades 13 and 14 are slid to perform plucking. The cutting blade drive unit 17 is connected to a power source by a flexible shaft 18. The cutting blade drive unit 17 and the flexible shaft 18 are detachable by a coupling 19. A combination of the upper and lower cutting blades 13 and 14, the cutting blade guide 16, and the cutting blade driving unit 17 is referred to as a cutting blade set 5. The rear edge of the cutting blade guide 5 is attached by protruding two scissors 20 and 21 with a thin plate, the upper scissor 20 is inclined obliquely upward, and the rear part is opened in a V shape. Behind the cutting blade set 5, a guide bottom plate 26 formed by an inclined plate 22 and a horizontal plate 23 is provided. Reference numeral 24 denotes a girder for opening the rear ends of the inclined plate 22 and the horizontal plate 23 in close contact with each other to make the cross-sectional shape triangular, and 25 is a spacer. On the left and right sides of the guide bottom plate 26 are guide side plates 27 and 28 for guiding the branches and leaves that are cut and blown away to the accommodation device. A cutting blade mounting girder 29 is passed over the upper part of the guide bottom plate 26. Insert the tip of the guide bottom plate 26 into the V-shaped groove formed by the scissors 20 and 21 of the cutting blade set 5, and insert the bolts 40 and 41 into the bolt holes 40 ', 40 ", 41' and 41" to attach the cutting blade set 5. It fixes to the support | pillars 30 and 31 of a cutting blade attachment girder.
[0011]
The structure of the central part of the plucking device will be described with reference to FIG. A support plate 33 for attaching a projection 32 for wiping off is welded to the central portion of the lower cutting blade 14. The upper ridge 20 has a hole through which the protrusion 32 penetrates and extends to a position where it contacts the central column 34. The lower flange 21 is provided with a hole through which the protrusion 32 passes, and extends below the central column 34 in order to be tightened with the central column 34 and the bolt 35.
[0012]
The central portions of the inclined plate 22 and the horizontal plate 23 on the guide bottom plate 26 side are stopped in front of the projection 32 so as not to interfere with the projection 32. The upper part of the central column 34 is attached to an auxiliary arm 37 at the central part of the cutting blade attaching girder 29 by a bolt 38 via a fixing bracket. Therefore, when the cutting blade set 5 is attached / detached, if the bolt 35 is first loosened and pulled out at the center, the hook 21 and the horizontal plate 23 are separated, and the protrusion 32 is cut together with the inclined plate 22, the horizontal plate 23, and the support plate 33. It comes off to the blade set 5 side. The central column 34 is fixed to the cutting blade mounting frame 29 and constitutes a plucking device frame 39 together with the guide side plates 27 and 28, the guide bottom plate 26 and the tea bag mounting frame 11. The blower tube 7 is attached to the plucking device frame 39. The cutting blade device of the present invention inserts a pointed portion of the guide bottom plate 26 into the V groove of the cutting blade guide 16, and tightens three bolts 40, 41 on the left and right and a bolt 35 on the central portion, thereby cutting the cutting blade. The set 5 can be detachably attached to the plucking device frame 39.
[0013]
【The invention's effect】
Since the cutting blade can be removed from the plucking device as a cutting blade set together with the cutting blade guide, the repair of the cutting blade can be performed without interruption by replacing with a spare cutting blade set. In the tea plantation, the shape and thickness of the cutting blade differ depending on the operation such as bud cutting, shallow cutting, deep cutting, and the like. In this invention, the cutting blade set according to these uses is prepared, and the cutting blade set according to the tea garden work can be easily attached without changing the plucking device. Compared with the conventional exchange type cutting blade device, the weight of the cutting blade is light and the number of bolts for attachment / detachment is small, so that attachment / detachment can be performed in a short time. According to invention of Claim 3, the branch and leaf caught on the support | pillar of the plucking device center part can be removed easily. It has a great effect on the efficiency of tea plantation and the cost reduction of machinery.
[Brief description of the drawings]
FIG. 1 is a side view of a riding type tea leaf plucking machine.
FIG. 2 is a plan view of FIG.
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a detailed cross-sectional view of the plucking device taken out.
FIG. 5 is a cross-sectional view when the cutting blade portion shown in FIG. 4 is removed.
FIG. 6 is a detailed cross-sectional view of the central portion of the cutting blade.
FIG. 7 is a plan view when a cutting blade portion is removed.
FIG. 8 is a front view when a cutting blade portion is removed.
[Explanation of symbols]
1 Traveling device (left)
2 Traveling device (right)
3 Teacup 4 Gate frame 5 Cutting blade set 6 Blower fan 7 Blower pipe 8 Flexible hose 9 Blowout branch pipe 10 Tea bag 11 Tea bag mounting frame 12 Tea bag holding plate 13 Cutting blade (upper)
14 Cutting blade (bottom)
15 Bolt 16 Cutting blade guide 17 Cutting blade drive unit 18 Flexible shaft 19 Coupling 20 庇 (upper)
21 庇 (bottom)
22 Inclined Plate 23 Horizontal Plate 24 Girder Material 25 Spacer 26 Guide Bottom Plate 27 Guide Side Plate 28 Guide Side Plate 29 Cutting Blade Mounting Girder 30 Post (Left)
31 Prop (right)
32 Protrusion 33 Support plate 34 Center column 35 Bolt (fixed under center column)
35 'Bolt hole 37 Auxiliary arm 38 Bolt (fixed to center post)
39 Plucking device frame 40 bolt (fixed to the column 30)
40 'bolt hole 40 "bolt hole 41 bolt (fixed to column 31)
41 'bolt hole 41 "bolt hole 42 hook

Claims (3)

In a tea garden work machine that attaches a plucking device equipped with a clipper-type cutting blade to a gate-type machine that straddles a teacup and runs along a teacup planted in a strip shape while plucking and pruning The plucking device comprises a clipper-type cutting blade set, a blower pipe that blows off the branches and leaves cut off by blowing strong wind, and a plucking device frame, and the plucking device frame is attached to the rear of the cutting blade set. The guide bottom plate is formed of guide side plates provided on the left and right sides of the guide bottom plate, and the guide bottom plate has a pointed triangular cross section with the lower surface being horizontal and the upper surface being raised at the rear, The blade set includes a clipper type cutting blade that reciprocates left and right, a cutting blade guide that slidably holds the cutting blade, and a cutting blade drive unit, and includes a cutting blade guide that constitutes the cutting blade set. At the rear, the plucking device frame With inserting the distal end portion of the guide bottom plate constituting the, a V-shaped groove side after the cutting blade guide, the cutting blade device estates working machine characterized by inserting the sharp edges of the tip of the guide base plate.   2. A cutting blade for a tea plantation machine according to claim 1, wherein two short ridges are formed by a thin plate on the rear side of the cutting blade guide, the ridge portion is opened in a V shape, and an acute angle portion of the guide bottom plate is inserted. apparatus.   3. A cutting blade device for a tea plantation working machine according to claim 1, wherein a projection for dropping is fixed to a central portion of the cutting blade that reciprocates, and is detached from the guide bottom plate together with the cutting blade guide.

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