JP3232453B2 - Tea garden management device with ridged floor running - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tea plantation management device which performs a pruning operation of a tea tree by a management unit such as a pruning machine while traveling on a running surface such as a crawler on the ground between ridges on both sides of a tea ridge. In particular, the present invention relates to a novel ridge-and-groove traveling type tea garden management device capable of performing efficient pruning work while maintaining the versatility of the management unit.

[0002]

BACKGROUND OF THE INVENTION In order to rationally perform tea garden management work such as pruning of tea leaves, pruning work of tea ridges, and spraying of chemicals, a traveling machine unit that runs across a tea ridge is provided with a tea garden. Has been put to practical use, which is equipped with a management unit of the above type and performs various management operations. Traveling modes in such a tea garden management device can be broadly classified into those in which a traveling body travels directly on the ridged ground and those on a rail laid in the ridges. The thing had the following problems in performing the pruning operation of the tea plant.

[0003] First, in this type of ridge-to-row ground traveling type, there is no laying object such as a rail between ridges, so that the tea branches and leaves cut by the pruning operation are discarded. Further, in a tea garden premised on a tea garden management device of a ridge floor traveling type, the tailing state of the tea ridge A is a state in which the upper portion is almost flat as shown in FIG. 9, and an arc shape having a radius of about 3 m. It is tailored. By the way, the reason why the tea furrow A is tailored in this way is that the furrow-land traveling type tea garden management apparatus works while traveling by a traveling body such as a crawler, and has no track, and the meandering at the time of maneuvering is completely. This cannot be avoided, and even if such a state occurs, it is possible to avoid an unsuitable reaping state.

[0004] In tailoring the state of such a tea ridges, in performing pruning work tea ridges, is as shown in FIG. 9 (a) Conventionally, the pruning range A ₀ of about 40cm for example, from tea ridges summit If it is set, the actual pruning work is such that the pruning is performed thinly in parallel from the top in order as indicated by the respective pruning lines t ₁ , t ₂ ,..., T _n . Specifically, when the range of the pruning is set to a depth of about 40 cm, the pruning is performed about 5 to 6 times. The reason for this is that if the tailoring of the tea ridge is relatively flat, for example, if the upper surface is trimmed at once in a deep manner over the entire width, in the relatively heavy leaf layer portion, the tea branches and leaves usually provided in the pruning machine If you do not increase the power of the blower fan for blowing
This is because the tea leaves a cannot be completely blown up to the furrows. Therefore, in consideration of the blowing ability of the pruning machine, conventionally, the cutting size has been made relatively shallow, and the cutting operation has been repeated several times to obtain a predetermined finished surface. Of course, such problems can be avoided by increasing the output of the blower fan incorporated in the pruning machine, but such a pruning machine can be used only when it is installed in a tea plantation management device that runs on a ridged ground. However, it is not versatile and causes a cost increase.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of such a background, and the management machine itself can use the basic specifications of a portable pruning machine or the like in order to enhance versatility. It is an attempt to develop a new tea garden management apparatus that can further reduce the number of man-hours for trimming work until the pruning is completed, while premised on making it possible.

[0006]

According to a first aspect of the present invention, there is provided an apparatus for managing a tea plantation between ridges and a ground, wherein a traveling machine frame is formed so as to straddle a tea ridge and a portion of the traveling machine frame located between the ridges. A traveling machine unit having a traveling body that is supported and driven by an appropriate power, and a management machine unit that is supported by the traveling machine frame of the traveling machine unit and performs the pruning of tea leaves and leaves, The management machine unit includes two management machine bodies each having a cutting blade driven by an appropriate drive source, and the cutting blades of the two management machine bodies are substantially at the center of the tea furrow when viewed in the pruning direction. The present invention is characterized in that the angle of intersection of two cutting blades can be changed by changing the supporting position of one or both ends of each cutting blade so as to intersect. According to the present invention, the two cutting blades are arranged in an intersecting manner, and the angle of intersection can be changed. For example, when cutting a leaf layer portion of a tea ridge with a relatively large load in the cutting operation, Primary cutting is performed with both hem portions of the ridge being deeply cut and the central portion being cut little or only slightly. In this type of work mode, the slope of the lower part of the management machine is more strongly inclined, so even when the relatively heavy load of the leaf layer is cut for the first time, the cut tea leaves and leaves slide to the side. It is easy to cut, so it can be pruned at once. In addition, the cutting angle of the cutting blade is reduced for the tea ridge where the leaf layer part has been considerably removed in the first cutting operation, and the cutting angle is reduced to about one or two times while making the shape substantially conform to the finished shape of the tea ridge. To make the final finish possible.
When such a work mode is adopted, the output of the main body of the management machine can be diverted almost the same as the conventional portable type.

According to a second aspect of the present invention, in addition to the above requirements, the main body of the management machine has an engine for driving a cutting blade mounted near the center of the tea garden management device. It is a feature. According to the present invention, such a mounting method is almost the same as the use form of the portable pruning machine, for example, and is a work form relatively familiar to the worker, and there is little discomfort in the work. In addition, the operation of the engine and the fuel tank is performed as in the case of two-person operation.

According to a third aspect of the present invention, in addition to the above requirements, the management machine unit includes a subframe of the traveling machine unit connected to the traveling machine frame. It is characterized by the following. According to the present invention, since the management machine unit also includes the subframe, the management machine main body can be attached to and detached from the traveling body together with the subframe, and the workability is good.

According to a fourth aspect of the present invention, in addition to the above requirements, the crossing angle of the cutting blade in the management machine main body in the management machine unit is changed.
It is characterized in that the adjustment is performed by changing the supporting height on the hem side of the cutting blade by the vertical position adjusting mechanism provided on the left and right sides of the sub-frame. According to the present invention, the crossing angle of each of the cutting blades of the two management machine bodies can be changed at the positions on both sides of the device, the workability thereof is good, and the hem side of the relatively light weight cutting blade. Since the end portion is operated, the labor required for the operation is small.

According to a fifth aspect of the present invention, in addition to the requirements of the second, third, or fourth aspect, the cutting blade in the main body of the management machine has a straight blade in a certain range on the engine side. It is characterized in that it is a part. According to the present invention, even when the intersection angle between the pair of cutting blades is reduced, the engine and the driving member of the cutting blade integrated with the engine sink below the cutting height of the other cutting blade. Therefore, the possibility of contact with a tea ridge or the like is avoided.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on the illustrated embodiments. Reference numeral 1 denotes a tea garden management apparatus according to the present invention, which is roughly divided into a traveling machine unit 2 and a management machine unit 3. More specifically, in the tea garden management device 1, the traveling machine unit 2 travels on the ground G between the ridges A. Therefore, the operator is required to board and operate the device due to the absence of guide members such as rails. Therefore, although it is customarily referred to as a riding type or a simple riding type, a so-called unmanned operation may be performed by using a remote control, optical, or electromagnetic guidance means instead of the boarding operation by the operator. In the traveling, the management machine unit 3 is positioned above the tea ridge A, and the tea garden management device 1 as a whole runs while straddling the tea ridge A. I do.

The work for adjusting the shape of the tea ridge A is conventionally called a cutting-off work, a shallow-cutting work, a pruning work, a middle-cutting work, etc. when viewed from the leaf layer portion in order of depth. In addition, management devices such as a mower, a shallow mower, a pruning machine, and a middle mower are prepared for each operation. The technical idea of the present invention is most notably effective in the pruning operation. Therefore, a pruning machine for performing the pruning operation will be described below as a representative example of the management machine unit 3, but in the present specification. The pruning machine represents the above-mentioned mower, shallow mower, middle mower or the like, or is used in a generic sense, and is used for conventional and limited pruning operations. It is not limited to a pruning machine. In the case of presenting the same technical problem, it goes without saying that the present invention can be applied to other management machines for adjusting the shape of the tea ridge.

First, the traveling unit 2 will be described.
The traveling machine unit 2 includes a traveling machine frame 11 and a traveling body 12 supported by a portion of the traveling machine frame 11 located between the ridges A as main members. First, the traveling machine frame 11 has a portal shape so as to be able to travel across the tea ridge A when viewed from the traveling direction, and has a substantially square frame shape as an example. More specifically, the upper frame 11a is made of an appropriate copper or aluminum square, round pipe, channel material, or the like, the front leg frame 11b extending downward from the front of the upper frame 11a, and the upper frame 1
1a, the rear leg frame 11c, the front leg frame 11b, and the rear leg frame 1 extending substantially vertically downward from behind.
Lower frame 11d provided to connect the lower ends of 1c
With

The running body 12 is supported near the lower end or lower frame 11d of the front leg frame 11b and the rear leg frame 11c, that is, at a portion located between the ridges of the running machine frame 11. The upper frame 11a is provided with an operation pit 13 on which an operator rides, and the operation pit includes a control lever 13a for controlling a traveling state of the crawler 20 and a seat 13b on which the operator sits. Have been. A drive source unit 14 is provided beside the operation pit 13. The drive source unit 14 includes a drive source for the traveling body 12 and an elevating shift cylinder 16 described later.
And specifically, the engine 14a
And a hydraulic unit 14b driven thereby. Therefore, the driving of the traveling body 12 is not performed by directly transmitting the rotation of the engine 14a, but by driving the hydraulic motor by rotating the hydraulic motor by the hydraulic oil pumped by the hydraulic unit 14b. Of course, it is needless to say that appropriate means such as direct drive by the engine, power generation of the generator by the engine, and driving of the traveling body 12 by the electric motor directly or through the battery by the generated power can be taken for this drive. .

An elevating bracket 15 is attached to the rear leg frame 11c of the traveling machine frame 11 so as to be able to move up and down. That is, this is assembled to the elevating bracket 15 so as to be able to move up and down by a guide roller 15a which holds the rear leg frame 11c at four points in the up, down, front and rear directions.
Is connected so that it can be moved up and down. That is, the lifting / lowering shift cylinder 16 is attached along the left and right rear leg frames 11c, and the free end of the sliding rod 16a is connected to the rear portion of the lifting / lowering bracket 15.

Further, a mounting pipe 15b for mounting the management unit 3 such as a pruning machine is provided on the lifting bracket 15. Reference numeral 17 denotes a set winch. The set winch allows the feed-out dimension of a winch wire 17a having one end attached to the elevating bracket 15 to be set freely, and also sets the operating position of the management machine unit 3 attached to the elevating bracket 15 to the operating position. It is always set to be the same. Further, a guide 18 is attached to the rear of the elevating bracket 15 so as to facilitate the transportation of the pruned tea leaves to the rear when, for example, a plucking machine is mounted on the traveling unit 2. Guide 1
A loading platform 19 is provided at the rear of the platform 8 so that the rear end can be flipped up when not in use. In addition, in the pruning operation and the like described in this embodiment, the carrier 19 is not used.

Next, the traveling body 12 in the traveling unit 2
Will be described. This is an example of a crawler 20
The tension setting is performed by a crawler pulley 21 supported below the traveling machine frame 11. Of course, the traveling body 12 is not limited to such a crawler type, but may be any suitable one such as a wheel having a relatively large ground contact surface, or a combination of a wheel and a crawler.

Next, the management unit 3 attached to the traveling unit 2 will be described. The management machine unit 3 has, as an example of a pair of left and right, a management machine main body 30 to which a pruning machine is applied as a main member. It is preferable that the management machine body 30 has a structure in which the management machine body 30 is attached to the traveling machine unit 2 while being mounted on the subframe 31. First, the management machine main body 30 will be described. For example, a portable pruning machine can be directly diverted, and the configuration is in accordance with a conventional method, and the engine 32 as a driving source and the direct pruning operation are performed. The clipper-type cutting blade 33 is a main member. The cutting blade 33 is configured to be curved substantially along the tea ridge, and preferably, the distal end side thereof is bent at the curved portion 33.
In addition to the above, it is desirable that the engine 32 side be a straight blade portion 33b. By the way, such a configuration is a cutting blade driving portion 32b which stores a driving member of the cutting blade 33 provided below the engine 32 when the angle of the cutting blade 33 becomes shallow.
Is to prevent the contact with the tea ridge A.

Each of the cutting blades 33 includes a cutting blade frame 34 as a guide member, and the cutting blade frame 3
4 has a receiving plate 34a substantially integral therewith. Further, the engine 32 is provided with a fan unit 32a for blowing off the cut tea leaves a, and a member for guiding the direction in which the tea leaves a blown off by the fan unit 32a is provided. Specifically, for example, as shown in FIG. 1, scattering guide plates 34 b are provided below both sides of the sub-frame 31. Of course, such a scattering guide plate may be provided on the cutting blade frame 34 or a receiving plate 34a integral therewith so as to be able to guide the tea leaves a in an appropriate direction. Also, compared to such a scatter guide plate 34b, a guide bag having a streamer-shaped rear opening is provided so as to be able to more positively guide the tea branches and leaves a.
May be attached to the rear.

Each of the cutting blades 33 in each of the management machine main bodies 30 is supported so as to be disposed so as to intersect at substantially the center of the tea ridge when viewed in the pruning direction. The sub-frame 31 that performs such support will be described. As shown in FIGS. 1, 4, 5, and 6, a suspension frame 35 having a width substantially equal to the entire width of the traveling machine frame 11 and side frames 36 extending downward from both left and right ends are combined. It has a gate shape with a low target height. The side frame 36 is provided with a vertical position adjusting mechanism 37. The vertical position adjusting mechanism 37 includes, for example, a nested combination of an inner cylinder 37b and an outer cylinder 37a in the form of a square pipe, appropriately selects the adjustment hole 37c to be combined, replaces the adjustment pin 37d, and replaces the lower end of the inner cylinder 37b. The setting position of the lower support member 36b in the side frame 36 provided at the side can be adjusted up and down. Note that a clip c is used to maintain the adjustment pin 37d. Further, on the side surface of the side frame 36, a mount pipe 36a for mounting the sub-frame 31 on the mount pipe 15b of the elevating bracket 15 of the traveling machine unit 2 is provided in a state of being slightly lowered forward. In the embodiments shown in FIGS. 6 to 6, as an example, the same mount pipe 36a is provided in two stages on the left and right sides so that the mounting position can be adjusted.

In the mounting structure of the management machine main body 30 on the sub-frame 31, first, the vicinity of the engine 32 of the management machine main body 30 is supported by a hanger rod 38 so as to be hung from substantially near the center of the sub-frame 31. On the other hand, the cutting blade frame 3 on the free end side of the cutting blade 33
Reference numeral 4 is supported by a pin-shaped lower support member 36b attached to the inner cylinder 37b. That is, a round pipe-shaped mounting bracket 36 as shown in FIG.
c is provided, and is aligned with either the mounting bracket 36c or the adjustment hole 37c in the inner cylinder 37b, and then the two are assembled by the pin-shaped lower support member 36b. Also in this case, the lower support member 36b is held by the clip c.
Performed by The mounting bracket 36c provided at the hem side end of the cutting blade frame 34 is not limited to the round pipe-shaped one as described above, but may be a bifurcated one that sandwiches the inner cylinder 37b back and forth (see FIG. 1). There is no harm, of course. As a result, as shown in FIG. 5, the main body 30 of each management machine is configured such that the cutting blades 33 are crosswise combined near substantially the center of the tea ridge A. Needless to say, in order to take such a crossing combination when viewed in the pruning direction, when viewed in the front-rear direction, the management device main bodies 30 are mounted so as to be shifted back and forth within a range where they do not interfere with each other.

The tea field management device 1 of the present invention of the traveling type between ridges and grounds.
The above-described embodiment is one preferred embodiment, and the cutting of the tea ridge A is performed by the following operation procedure. First, the pruning operation of the tea ridge A (the entire operation is referred to as a pruning operation, and each operation performed by dividing the pruning operation into several stages is referred to as a pruning operation), for example, FIG.
In performing the pruning of the tea ridge A as shown in (b), first, for example, a pruning range A of about 40 cm from the top of the tea ridge A.
_{When 0} is set, according to the present invention, a desired pruning state can be obtained by, for example, about three trimming operations.
Or primary pruning shallow near the center of tea ridges A, deep accordance Yuku both skirt, and pruning state shown by the primary trim lines T ₁ as the center is sharp. The second pruning do pruning operations, such as dropping cutting sharp portion of the substantially central portion as shown in the secondary trim line T _2. And it perform final pruning as finishing trim lines T ₃ that matches the pruning surface for the purpose.

Hereinafter, this procedure will be described together with the operation mode of the tea garden management apparatus 1. (1) Preparation work (refer to FIG. 4) First, from the state where the management machine unit 3 is not attached to the traveling machine unit 2, first, the management machine main body 30 assembled to the subframe 31 is first moved to the traveling machine unit 2 Perform the operation to attach to. That is, the mount pipe 36a of the subframe 31 is matched with the mount pipe 15b of the lifting bracket 15 of the traveling machine unit 2, and both ends of the set rod 39 are pressed with appropriate clips c or the like so as to penetrate the mount pipe 36a to prevent the mounting rod 36 from coming off. Set complete. After attaching the management device unit 3 to the traveling machine unit 2 in this way, the height of the entire management device unit 3 is adjusted according to the tailoring dimensions of the tea ridge A to be pruned. In this case, the position is set by appropriately contracting the elevating shift cylinder 16 in the traveling machine unit 2.
It is desirable that the position of the lifting bracket 15 be set in accordance with the feeding dimension of the lifting bracket 15. Of course, the setting position of the raising / lowering bracket 15 may be set by strictly controlling the degree of extension of the lifting / lowering shift cylinder 16.

(2) Primary cutting operation (see FIG. 5) As described above, in the primary cutting operation, the tea furrow A
To trim the shaped as central a pointed, because of setting primary pruning line T _1, mutual cutting blade 33 in each of the tiller body 30, reduce its intersection angle α as shown in FIG. 5 To be. In this embodiment, this operation is performed by the management machine main unit 30 having the engine 3
The cutting blade 3 is suspended so that the height of the cutting blade 33 is substantially constant.
3 has a small intersection angle α. Specifically, the adjustment is performed by adjusting the vertical position adjustment mechanism 37 of the side frame 36 of the sub-frame 31. The fitting of the inner cylinder 37b fitted inside the outer cylinder 37a constituting the side frame 36 is performed. The dimensions are switched so that the lower support member 36b provided at the lower end of the inner cylinder 37b is set to be lower, and the adjustment holes 3 that match each other are set.
The height is set by penetrating the adjustment pin 37d with respect to 7c. Needless to say, an appropriate length adjusting mechanism such as a combination of a screw shaft and a screw block can be used as the height adjusting mechanism.

After the management unit 3 is set in such a state, and the posture of the management unit 30 in the management unit 3 is set, the operator gets on the operation pit 13 as appropriate and places the primary Perform pruning work. Note that this work is to first trim the entirety of the planned tea garden, and is not usually performed for each tea ridge. By such an operation, the tea ridge A becomes the primary cutting line T _{1 as} shown in FIG.
The upper part is cut off. Then, the trimmed tea leaves a are guided to a guide member provided with the management machine main body 30, and are processed so as to fall between the tea ridges. That is, in the case of the primary cutting operation, although the leaf layer portion having a relatively large load at the time of blowing air is cut much, the entire leaf layer portion is not cut, and at this time, the cutting blade 33 of the management machine main body 30 is cut. Since the angle is inclined so as to be greatly reduced toward the hem side, the cutting blade 33 is sufficiently guided to the receiving plate 34 a following the cutting blade frame 34 even with the blowing amount of an ordinary portable pruning machine or the like. Been sliding down,
Further, the scatter guide plate 34b allows the scattered guide plate 34b to drop into, for example, the rear side of the traveling body 12.

[0026] (3) secondary pruning work further after such primary pruning work, the range of the upper shown in the secondary trim line T ₂ are pruned. In this operation, after the primary pruning operation of the entire tea garden is completed, the operator adjusts the vertical position adjustment mechanism 37 in the sub-frame 31 of the management device unit 3 by manual work, for example, and
0, the crossing angle α of each cutting blade 33 is set to be larger than the primary cutting, or set to an angle that matches the arc surface of the tea ridge A of the final finish by raising the hem side end of the cutting blade 33 upward. Next pruning is performed. Specifically, in order to further increase the intersection angle α between the pair of cutting blades 33, each of the cutting blades 3
The inner cylinder 37b of the vertical position adjusting mechanism 37 supporting the end of the third cylinder 3 is adjusted to be moved somewhat upward. This is due to the adjustment holes 37 in the outer cylinder 37a and the inner cylinder 37b.
This is performed by selecting c, and the setting is performed by penetrating the adjustment pin 37d at an appropriate position as in the case described above.

In the case of such a cutting operation, the cutting blade 33 is used.
Is almost horizontal and the blow-off load by the fan unit 32a in the management machine main body 30 is large, but the amount cut off there is also cut off from the top near the center of the tea furrow A, which is left uncut by the primary cutting operation. As a result, the load is relatively light and the tea leaves a are sufficiently blown off. Since the crossing angle α between the respective cutting blades 33 increases after the secondary cutting, the cutting that includes the engine 32 that drives the cutting blade 33 and the direct drive mechanism for the cutting blade 33 provided below the cutting blade 33 is included. The blade drive unit 32b and the like approach the tea ridge A, but in this embodiment, since the cutting blade 33 is provided with the straight blade portion 33b on the engine 32 side, when the entire range of the cutting blade 33 is curved. In comparison, the engine position is higher, and the contact between the upper surface of the tea ridge A and the cutting blade drive unit 32b is avoided.

[0028] (4) finishing trim angle setting of the cutting blade 33 in the case of a finishing trim line T ₃ as shown in FIG. 9 (b) to (see FIG. 6) further subsequent finishing mowing, pruning already secondary work Is set to the angle of finishing pruning, the elevation shift cylinder 16 is simply operated as it is to lower the entire management machine unit 3 with the sub-frame 31 to the target height. Of course, at this time, if the work of extending the set winch 17 is necessary, it is adjusted. Such is the tea leaves a is trimmed remaining on finishing trim line T ₃ by performing the pruning finished by the. By the way, at this stage, since the leaf layer portion which has the largest load is almost removed, the cutting size is set to be relatively large.

[0029]

[Other Embodiments] [Other Embodiment 1] First, in the embodiment described above, the management machine unit 3 is mounted in front of the elevating bracket 15 of the traveling machine unit 2, and the tea garden management device 1 Although it is mounted almost at the center, as another embodiment, as shown in FIG. 7, it can be provided at a position where it is further protruded backward from the traveling unit 2. That is, in this case, the mount pipe 15b provided on the lifting bracket 15 of the traveling machine unit 2 is disposed so as to extend sufficiently rearward, and the rear end of the mount pipe 15b supports the subframe 31 of the management machine main body 30. Is also good. Of course, in the case of such an embodiment in which the mount pipe 15b is sufficiently extended to the rear, it goes without saying that the management machine unit 3 can be mounted at both front and rear ends. Also, in this case, due to the large load at the rear end of the mount pipe 15b, this portion is moved to the guide 1
It is preferable to be configured to be partially supported by 8 or the like.

[Other Embodiment 2] In the above-described embodiment, the management unit 3 includes the management unit main body 30 and the sub-frame 31, which reduces the efficiency of the actual tea garden management work. Although it is preferable in consideration of the above, as another embodiment, the management machine main body 30 may be directly mounted on, for example, the traveling machine unit 2 as a dedicated machine for the pruning operation. That is, the skeleton shown in FIG. 8 hangs, for example, the engine 32 side of the management machine main body 30 on a vertically movable hanging member 40, and directly moves the cutting blade frame 34 on the free end side of the cutting blade 33. The traveling machine frame 11 in the unit 2 supports the unit. In this case, the lower support member 41 is adapted to be vertically adjustable.

[0031]

According to the tea garden management apparatus of the present invention, the two cutting blades 33 of each management machine main body 30 are arranged in an intersecting manner, and the intersection angle α is changed. For example, when cutting the leaf layer of the tea ridge A, which has a relatively large load in the cutting operation, the both sides of the tea ridge A are cut deeply, and the central part of the management machine 30 is cut so as to cut little or shallowly. Can be set more strongly, and it is possible to mow deeply at once at the first cutting of the leaf layer part with a relatively large load. When such a work mode is adopted, the output of the management machine main body 30 can be diverted to one which is almost the same as the conventional portable type.

According to the second aspect of the present invention, the method of mounting the management machine body 30 is almost the same as that of a portable pruning machine, for example. The work style is relatively familiar, and there is little discomfort in the work. In addition, the operation of the engine and the fuel tank is performed as in the case of two-person operation.

According to the third aspect of the present invention, the management machine unit 3 also includes the sub-frame 31, so that the management machine main body 30 and the sub-frame 31 are transferred to the traveling body 12 together. It can be attached and detached, and its workability is good.

Furthermore, according to the fourth aspect of the present invention, the crossing angle α of each of the cutting blades 33 of the two management machine bodies 30 can be changed at positions on both sides of the apparatus. The workability is good, and the hem side end of the cutting blade 33 having a relatively light weight is operated, so that the work labor can be reduced.

Furthermore, according to the fifth aspect of the present invention, even when the crossing angle α between the pair of cutting blades 33 is reduced, the engine 32 and the cutting unit integrated therewith. The driving member of the blade 33 does not sink below the other cutting height, and the possibility of contact with the tea ridge A or the like is avoided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a tea garden management device according to the present invention, which is partially separated and disassembled.

FIG. 2 is a front view of the tea garden management device.

FIG. 3 is a side view of the tea garden management device.

FIG. 4 is an exploded front view showing a state of preparation for attaching the management machine unit to the traveling machine unit in the tea garden management device, including a partial side view.

FIG. 5 is a front view including a partial perspective view of a setting state of the management machine unit at the time of the primary pruning operation in the tea garden management device.

FIG. 6 is a front view showing a setting state of a management machine unit at the time of a secondary or final pruning operation in the tea garden management device, including a partially enlarged view.

FIG. 7 is a side view showing another embodiment of the present invention.

FIG. 8 is a front view showing still another embodiment of the present invention.

FIG. 9 is a front view showing both the conventional method and the method of the present invention in the state of pruning the tea ridge.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Tea garden management apparatus 2 Traveling machine unit 3 Management machine unit 11 Traveling machine frame 11a Upper frame 11b Front leg frame 11c Rear leg frame 11d Lower frame 12 Running body 13 Operation pit 13a Control lever 13b Seat 14 Drive source unit 14a Engine 14b Oil pressure Unit 15 Elevating bracket 15a Guide roller 15b Mount pipe 16 Elevating shift cylinder 16a Sliding rod 17 Set winch 17a Winch wire 18 Guide 19 Loading bed 20 Crawler 21 Crawler pulley 30 Management unit main body 31 Subframe 32 Engine 32a Fan unit 32b Cutting blade drive Part 33 Cutting blade 33a Curved part 33b Straight blade part 34 Cutting blade frame 34a Receiving plate 34b Scattering guide plate 35 Suspension frame 36 Side frame 36a mounting pipe 36b lower support member 36c mounting bracket 37 vertical position adjusting mechanism 37a outer cylinder 37b in the cylinder 37c adjustment hole 37d adjustment pin 38 hanger rods 39 set the rod 40 lifting member 41 the lower support member A tea ridges A ₀ pruning range a Tea branches and leaves c Clips G Ridge ground T ₁ Primary cut line T ₂ Secondary cut line T ₃ Finish cut line α Crossing angle

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01D 46/04 A01G 3/08 504

Claims (5)

(57) [Claims] 1. A traveling machine unit comprising: a traveling machine frame configured to straddle a tea ridge; and a traveling body supported by a portion of the traveling machine frame located between the ridges and driven by appropriate power. A management machine unit supported by a traveling machine frame of the traveling machine unit and performing pruning of tea leaves and leaves, wherein the management machine unit includes a cutting blade driven by an appropriate drive source. And the cutting blades of the two management machines are arranged so as to intersect at substantially the center of the tea ridge when viewed in the direction of the pruning, and one or both ends of each cutting blade are arranged at the intersection. A tea garden management device of a ridge-to-groove running type, wherein the crossing angle of two cutting blades can be changed by changing a support position. 2. The tea garden management apparatus according to claim 1, wherein the management machine main body has an engine for driving the cutting blade mounted near the center of the tea garden management apparatus. 3. The management apparatus according to claim 1, wherein the management machine unit includes a sub-frame of the traveling machine unit connected to the traveling machine frame. 4. The crossover angle of the cutting blade in the main body of the control unit in the control unit is changed by changing the supporting height of the bottom side of the cutting blade by a vertical position adjusting mechanism provided on the left and right sides of the sub-frame. Claim 1, characterized in that:
4. The tea garden management device according to 2 or 3, which is of a traveling type between ridges. 5. A tea field management device according to claim 2, wherein the cutting blade in the main body of the management machine has a straight blade portion in a certain range on the engine side.