JP4611807B2 - Pruning device mounting structure - Google Patents

Description

  The present invention relates to a mounting structure for a pruning device.

  In general, a pruning device is a device that prunes branches and trunks at a position lower than the previous plucking surface in order to renew tea trees with fine branches and dense leaves, and leaves that have become smaller or trees that have become too tall. is there. Conventionally, such a pruning device is attached so as to be movable up and down instead of the plucking device at the center lower side of the traveling aircraft (see, for example, Patent Document 1), or almost horizontally behind the aircraft of the traveling aircraft. It was attached so that it could be lifted and lowered.

  However, the conventional pruning device mounting structure has the following problems. That is, for both the front and rear persons, the elevating member that elevates and lowers the pruning device is configured to move up and down along the vertical frame of the traveling machine body. For this reason, the pruning device cannot be lowered at a position lower than the vertical frame of the traveling machine body, that is, lower than the traveling device connected to the lower end of the vertical frame, so the pruning surface can be set lower. However, there was a problem that the period until the next pruning time could not be extended.

  Therefore, in order to solve such a problem, in the state where the pruning device is lowered, the height position of the traveling device is set by projecting the pruning device so as to be located behind the traveling device. It is conceivable to obtain a lower pruning surface. However, according to such a method, the amount of protrusion to the rear of the aircraft increases, which causes problems such as turning performance and trouble during transportation and storage of the aircraft.

  There is also a demand for facilitating the angle adjustment of the cutting blade of the pruning device that has been performed by an operator.

JP 2001-251929 A

  Therefore, the present invention was made to solve the above-described problems of the prior art, and even if the branching device is extended so as to be positioned lower than the height of the traveling device, the turning performance is improved. To provide a mounting structure for a pruning device that is secured, does not interfere with the transportation and storage of the aircraft, and that the angle of the cutting blade of the pruning device can be easily adjusted. Objective.

In order to achieve the above object, the invention described in claim 1 is a pruner that is attached to a rear part of a traveling machine that has a traveling device and travels across a teacup so as to be able to move up and down while extending so as to extend rearward. In the mounting structure of the branch device,
Between the elevating member that moves up and down along the vertical frame of the traveling machine body and the pruning apparatus, a hinge member that allows the pruning apparatus to be pivoted up toward the front of the machine body is disposed, One end portion of the hinge member is pivotally attached to the lifting member side, and the other end portion of the hinge member is positioned lower than the height of the traveling device in a state where the pruning device is extended. It is attached in the state fixed to the upper part of the said pruning apparatus, It is characterized by the above-mentioned.

  In order to achieve the above object, according to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the pivot fulcrum of the hinge member is located in front of the rear end portion of the traveling device. It is characterized by.

  In order to achieve the above object, the invention according to claim 3 is fixed to the branching device and one end of the hinge member fixed to the elevating member in addition to the configuration of the invention according to claim 1. A driving means for rotating the pruning device is disposed between the other end of the hinge member.

According to the first aspect of the present invention, with the hinge member disposed between the elevating member that moves up and down along the vertical frame of the traveling aircraft and the pruning device as a pivotal fulcrum, the pruning device is moved forward of the aircraft. The other end of the hinge member is fixed to the upper part of the pruning device so that the pruning device is positioned lower than the height of the traveling device with the pruning device projecting upward. When install them, the amount of projection of the aft body is shortened. Moreover, the cutting angle of the cutting blade with respect to the pruning surface changes with the change in the posture of the pruning device that rotates as appropriate. Further, when the pruning device is extended, the pruning device is positioned lower than the height of the traveling device. As a result, even if the pruning device is extended so as to be positioned lower than the height of the traveling device, the turning performance can be ensured without causing troubles during transportation and storage of the aircraft. It is possible to provide a structure for attaching a branching device that allows easy adjustment of the angle of the cutting blade of the branching device.

  In addition, it is possible to raise and lower the cutting blade by appropriately rotating the pruning device without using the lifting device, so that the operability of the machine is improved and the pruning surface of the teacup, that is, the cutting height is easy. It becomes possible to align.

  Furthermore, since the pruning device is supported in a state of projecting rearward from the traveling device, it is easy to use an existing plucking machine in which a plucking device is attached to the lower center of the traveling machine body without significantly changing its structure. It becomes possible to attach to. In addition, when applied to a tea garden management machine, for example, it is easy to replace various attachments such as a mid-cutting device, deep plowing, cultivator, subsoiler, compost application device, fertilizer application device, control machine, etc. Even humans can improve work efficiency.

  According to the second aspect of the present invention, the pruning device is rotated in a flip-up manner toward the front of the machine body around the rotation fulcrum located in front of the rear end portion of the traveling device. Thereby, in addition to the effect of the invention described in claim 1, it is possible to further shorten the entire length of the machine body in a state where the pruning device is rotated.

  According to the third aspect of the present invention, the hinge member is provided with driving means for rotating the pruning device. Thereby, a pruning apparatus can be rotated easily and an operator's effort can be reduced.

  By installing a hinge portion that pivots the pruning device in a flip-up manner toward the front of the aircraft between the elevating member that moves up and down along the vertical frame of the traveling aircraft and the pruning device, Even if the pruning device is extended so that it is lower than the height, turning performance is secured, there is no hindrance during transportation and storage of the aircraft, and the angle of the cutting blade of the pruning device can be easily adjusted A pruning device mounting structure that can be used is realized.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a left front perspective view of a tea garden management machine to which the present invention is applied, FIG. 2 is a right front perspective view of the same example, FIG. 3 is a right rear perspective view of the same example, and FIG. FIG. 5 is a perspective view of the rear part of the fuselage in the same example, FIG. 6 is a perspective view of the rear part of the rear part of the fuselage in the example, and FIG. 7 is a state in which the pruning device in the example projects to the rear of the fuselage. FIG. 8 is a rear view of the same example, FIG. 9 is a side view showing a state in which the pruning device of the same example is flipped up in front of the machine body, and FIG. 9 is a rear view of FIG. 9.

A tea garden management machine to which the present invention is applied will be described.
As shown in FIGS. 1 to 8, the tea garden management machine 10 uses, for example, a riding type mid-crop machine, and extends rearward of the traveling machine body 11 that travels while straddling the teacup. A pruning device 60 is mounted so as to be lifted and lowered in an overhanging state.

  The traveling machine body 11 will be described. As shown in FIGS. 1 to 3, the traveling machine body 11 includes a front frame 12 and a rear frame 13 that are formed in a frontal portal shape for traveling while straddling a teacup, and these front sides. And upper and lower connection frames 14, 14, 15, 15 for connecting the rear frames 12, 13.

  The front and rear frames 12 and 13 are opposed to each other in a state of being separated from each other in the longitudinal direction of the body, and a two-part structure is used so that the gauge can be expanded and contracted in the lateral direction of the body. And the hydraulic type gauge expansion-contraction cylinder 16 which makes these front side and rear side frames 12 and 13 synchronize and extend between gauges is provided in the front side of the front side and the rear side frames 12 and 13, respectively.

  A pair of left and right lower connecting frames 15, 15 extending in the front-rear direction of the machine body are integrated with the lower ends of the vertical left and right legs of the front frame 12 and the lower ends of the vertical left and right legs of the rear frame 13. It is fixed so that it is connected. These lower connection frames 15 and 15 are provided with a hydraulic traveling device 20 in which a crawler 19 is wound between a driving wheel 17 and a driven wheel 18. Above each traveling device 20, a hydraulic tank 21 for supplying hydraulic pressure to the hydraulic actuator and a fuel tank 22 for supplying fuel to a drive source described later are attached and fixed. In addition, the traveling device 20 is not limited to the one using a crawler, and may be one using a wheel, a rail type, or the like, for example.

  Further, the left and right bent portions of the front frame 12 and the left and right bent portions of the rear frame 13 are coupled and fixed so that a pair of left and right upper connecting frames 14 and 14 that are inclined in the longitudinal direction of the fuselage are integrated. Has been. Further, a horizontal frame 23 (shown in FIGS. 3 and 5) that does not follow the gauge expansion / contraction operation of the traveling machine body 11 is installed between the opposing surfaces of the upper connection frames 14 and 14. A plate-like floor member 24 (shown in FIG. 2) is disposed between the horizontal frame 23 and the front frame 12.

  The floor member 24 is disposed at the right front part of the fuselage, and a steering unit 25 is disposed on the upper surface thereof, and the blower unit 26 and the engine are adjacent to the left side of the steering unit 25. A portion 27 is provided.

  The control unit 25 includes a touch panel type input operation display unit (for example, a gauge expansion / contraction amount as an input numerical value) in which a control unit is incorporated as a control means for performing machine operation and tea garden management work (pruning work in this case). , Cutting height, etc.) and various switches such as an ignition switch. Further, traveling history information by GPS (Global Positioning System), for example, traveling distance information, traveling speed information, and the like can be stored, displayed, and transmitted to the control unit of the control unit 25 via a communication line. The function is provided. Further, the control unit can perform various controls of the pruning device 60 based on the travel history information, input information, and the like, for example, fine posture control, cutting blade drive control, and the like.

  Behind the control unit 25 are arranged a control seat 28 for an operator to sit down and perform machine operation and tea garden management work, a T-shaped operation handle 29 in front view, and various machine operation levers 30. A pilot check valve / electromagnetic valve 31 for raising / lowering driving and extending / contracting between the gauges is disposed diagonally right behind the cockpit (shown in FIG. 2).

  In the blower section 26, a turbofan blower that is belt-driven by an engine (not shown), which will be described later, is stored in a box-type blower cover 26A with a vent hole. This blower is turned on and off by a switching lever 32 disposed on the control unit 25 side, and the branching device 60 prunes the branches and trunks from the tea tree by the wind (air flow) generated by the blower. Two flexible air ducts 33, 33 for blowing away in the intercostal direction are connected.

  The engine unit 27 includes an engine as a power source for the traveling machine body 11 and a hydraulic pump 34 (shown in FIG. 2) that is driven by the engine and supplies hydraulic pressure to each hydraulic actuator. It is housed in a box-shaped engine cover 27A having pores. In the engine cover 27A, there are disposed a radiator (not shown) for cooling engine coolant, and an oil cooler for cooling the hydraulic fluid supplied to the traveling device 20 and the hydraulic actuator discharged from the hydraulic pump 34. An air cleaner and an exhaust pipe are disposed on the upper part of the engine cover 27A.

  And in the upper part of the rear frame 13 behind the control unit 25, the blower unit 26 and the engine unit 27, upper and lower two-stage load receiving members 35, 35 are formed via arm members 36, 37. Each of them is mounted and supported so as to be horizontally rotatable so that it can be manually extended to the rear of the machine body.

  Further, as shown in FIG. 6, elevating members 39 and 39 that move up and down along the legs via four rolling elements 38 (only a part is shown) are respectively provided on the left and right leg portions of the rear frame 13. It is arranged. These elevating members 39, 39 are provided with an automatic center mechanism (Japanese Patent Application No. 2003-362170 "tea garden riding type work by the applicant of the present application" for accurately aligning the center of the pruning device 60 with the center of the gauge of the traveling devices 20, 20. Both ends of the telescopic horizontal frame 40 that can be expanded and contracted in the left and right direction of the airframe are coupled and fixed, and both ends of the fixed horizontal frame 41 that is not expandable and contracted in the left and right direction of the airframe. The elevating members 39 and 39 are coupled and fixed via U-shaped flange portions 42 and 42 and slide mechanism portions 43 and 43 extending rearward of the machine body.

  The slide mechanism portion 43 supports the flange portion 42 via two upper and lower slide shafts 44 (shown in FIGS. 2 and 6) extending in the left-right direction of the machine body. The slide shaft 44 is fixed to the traveling machine body 11 that can extend and contract between the gauges by sliding in the left and right direction with the traveling machine body 11 while supporting the flange portion 42 coupled and fixed to the end of the fixed horizontal frame 41. A horizontal frame 41 can be installed.

  The two link arms 45 and 45 (shown in FIGS. 3 and 5) swingably attached to the fixed horizontal frame 41 are connected to the fixed side and the elastic side of the extendable horizontal frame 40, respectively. When the telescopic side and the stationary side of the telescopic horizontal frame 40 extend and contract by a distance L, the stationary horizontal frame 41 moves L / 2 along the slide shaft 44, so that the center of the pruning device 60 is the traveling device 20, Accurately aligned with the center of 20 gauges.

  Further, left and right flanges 46 and 46 attached to the lower surface sides of the left and right ends of the fixed horizontal frame 41 are fed out from a hydraulic winding device (not shown) attached to the upper portion of the rear frame 13 in synchronization. The lower ends of the pair of chains 47 and 47 are respectively locked, and the left and right elevating members 39 and 39 can be moved up and down in synchronization. The winding device is driven and controlled so that the chains 47 and 47 are fed out or wound according to the cutting surface height input from the input operation display unit.

  Further, flanges 48, 48 for supporting the pruning device 60, which extends horizontally, in a cantilevered manner so as to be able to turn up toward the front side of the machine body, are provided below the elevating members 39, 39. Are mounted so as to extend toward the rear of the machine body, and between these left and right flange parts 48, 48, a loading platform 49 having a central part curved upward is provided.

  Between the left and right flange portions 48, 48 and the fixed horizontal frame 41, the pair of left and right pipe members 50, 50 avoid interference with other aircraft parts when assembled to the traveling aircraft body 11, and are trimmed. In order to increase the support rigidity when the branch device 60 is mounted and to support the telescopic cylinders 51 and 51, which will be described later, they are erected in an appropriately meandering form, and in the middle part of these pipe members 50 and 50 The joint members 52, 52 extending above the fuselage are joined and fixed firmly by welding in a state where the lower ends of the joint members 52, 52 are joined. On the side surface (outer surface) of the upper portion of the joint members 52, 52, the pruning device 60 that is horizontally extended toward the rear of the machine body is rotated in a flip-up manner toward the front side of the machine body. The upper parts of the hydraulic telescopic cylinders 51, 51 are attached so as to be rotatable in the longitudinal direction of the machine body.

  Hinge members 53, 53 are interposed between the lower portions of the respective telescopic cylinders 51, 51 and the flange portions 48, 48.

  The hinge member 53 includes a vertical vertical surface portion 53A and a projecting surface portion 53B that extends horizontally toward the inner side of the machine body from the vertical surface portion 53A. The lower part is attached so as to be rotatable in the longitudinal direction of the machine body with the central part of the vertical surface part 53A sandwiched from above. Further, the front portion of the vertical surface portion 53A of the hinge member 53 is attached so as to be rotatable in the front-rear direction of the body while being joined to the vertical surface portion of the flange portion 48 from the side of the body. This is the pivot point of the branch device 60. In addition, although it is preferable that a rotation fulcrum is located ahead of the rear-end part of the traveling apparatus 20, it is not limited to this.

  Further, the projecting surface portion 53B of the hinge member 53 is coupled and fixed in a state of being joined to the upper surface side of the support frame 61 of the pruning device 60 extending in the left-right direction of the machine body. Accordingly, when the telescopic cylinders 51 and 51 are shortened, the pruning device 60 projecting horizontally toward the rear of the body is rotated in a flip-up manner toward the front side of the body. Further, when the telescopic cylinders 51 and 51 are extended, the pruning device 60 that is inverted at the rear part of the machine body rotates so as to project horizontally toward the rear of the machine body.

  As shown in FIGS. 4 to 8, the pruning device 60 includes a support frame 61 formed in a substantially arc shape in front view in accordance with the tree shape, and a mowing attached to the lower side of the support frame 61 so as to be reciprocally movable. The blade (clipper blade) 62 and a hydraulic cutting blade driving motor 63 (shown in FIG. 4) disposed on one end side of the cutting blade 62 and driving the cutting blade 62 are configured. Further, the support frame 61 is provided with a pair of left and right mounting stays (not shown) for fixing the ends of the air ducts 33, 33 in a detachable manner, and on the left and right sides of the support frame 61. A pair of left and right anti-scattering covers 64 for preventing the branches and trunks blown off by the wind blown from the air blowing ducts 33 and 33 after being cut by the cutting blade 62 and falling between the left and right eyelids. 64 is attached. The attachment stay can be attached to the loading platform 49 according to tea garden management work (for example, when the plucking device is attached).

  When pruning work is performed using the tea garden management machine 10 with the pruning device 60 attached to the rear of the machine in this way, first, the operator operates the traveling machine body 11 so as to straddle the teacup and also performs a desired pruning operation. After the pruning device 60 that is horizontally extended toward the rear of the machine is moved up and down so that the height of the branch surface can be obtained, the cutting blade 62 of the pruning device 60 is operated by operating the operation unit for attachment. Drive. In that state, pruning while running across the teacup. The branches and trunks pruned by the cutting blade 62 are blown off in the left and right intercostal directions by the wind blown from the blower ducts 33, 33, and then sent to the lower side of the intercostals by the scattering prevention covers 64, 64. Eventually, when the traveling machine body 11 reaches the headland and the operation of the teacups in one row is finished, the operator stops the cutting blade drive of the pruning device 60 and then changes the direction. In this case, unlike the conventional case, by shortening the telescopic cylinders 51, 51, the pruning device 60 projecting horizontally to the rear of the aircraft is directed toward the front of the aircraft as shown in FIGS. Turn it upside down and turn it upside down. As a result, the amount of overhang to the rear of the fuselage is reduced and the overall length of the fuselage is shortened, so that the operator does not interfere with the pruning device 60 with the teacup even in a narrow headland and is very stable. The traveling machine body 11 can be turned. Further, since the cutting blade 62 is raised and lowered by appropriately rotating the pruning device 60 without using the lifting devices 39, 39, the operability of the machine is further improved, and the pruning surface of the teacup, that is, the cutting The height can be easily aligned. Furthermore, the operator can visually recognize the rear portions of the traveling devices 20 and 20 while seated, thereby improving the operability during retreating and turning.

  Then, the operator who swivels the traveling machine body 11 extends the telescopic cylinders 51 and 51 to horizontally extend the pruning device 60 to the rear of the machine body, and then prunes the adjacent teacup. When the pruning device 60 is extended to the rear of the machine body, if the rotation angle of the pruning device 60 is set to a desired angle (about 3 degrees) via the input operation display unit, the input setting value is set. The telescopic cylinders 51 and 51 are appropriately extended to obtain a cutting angle of the cutting blade 62 with respect to the pruning surface different from the previous one, and the optimum cutting blade angle can be adjusted according to the plucking conditions.

  In addition, by supporting the pruning device 60 in a state of projecting rearward from the traveling devices 20, 20, the machine structure is greatly changed to an existing plucking device having a plucking device attached to the lower center of the traveling aircraft. For example, it is easy to replace various attachments such as mid-cutting devices, deep plows, cultivators, subsoilers, compost application devices, fertilizer application devices, control machines, etc. Enhanced.

  The rotation of the pruning device 60 is configured to be performed by an operator, but is not limited to this. For example, when the load of the cutting blade 62 of the pruning device 60 is lost, that is, when the detection means using a hydraulic, mechanical, or optical type detects that the pruning operation has been completed, the pruning device 60 is moved to the front side of the body. When the traveling machine body 11 has traveled the distance of the length of the teacup input to the input operation display unit, the pruning device 60 is automatically moved toward the front side of the machine body. It is possible to rotate. In addition, the pruning device 60 can be automatically extended horizontally toward the rear of the machine after the turn.

  In addition, the pruning device 60 is configured to shorten the overall length of the airframe by rotating the pruning device 60 toward the front side of the airframe, but is not limited thereto. It is also possible to shorten the overall length of the machine body by sliding it obliquely upward toward the front side.

  Next, the structure of the connection part of the traveling machine body 11 and the pruning device 60 will be described with reference to FIGS. 11 and 12. FIG. 11 is a perspective view showing a configuration of a connecting portion between the loading platform 49 and the pruning device 60, and FIGS. 12A and 12B are perspective views showing two mounting states of the pruning device 60. is there.

  As described above, in the rear pruning machine in which the pruning device 60 can be extended low so as to be located behind the traveling devices 20, 20, the lifting devices 39, 39 that lift and lower the plucking device 60 are A plucking device for plucking tea leaves can be attached to the lower side of the center of the traveling machine body 11 so as to be lifted and lowered.

  However, in this case, there is a problem that the maximum pruning surface height of the pruning device 60 is lower than the plucking surface of the plucking device. In other words, in most cases, the pruning work is performed in several times (about 100 mm increments) for tea trees whose tree height has become so high that the cutting height of the plucking device cannot cope with them. When the maximum pruning surface height of the pruning device 60 is lower than the plucking surface of the plucking device, the initial pruning width is increased. Then, there arises a problem that the possibility of clogging of the pruning device 60 due to large pruning waste increases.

  Therefore, in the attachment structure of the pruning device in this example, as shown in FIG. 11, the flange members 53C and 53C facing the upper side of the machine body are formed on the hinge members 53 and 53, and the flange portions 53C and 53C are formed. In addition, two upper and lower screw holes 53C1 and 53C2 (however, 53C2 is a shade of a support shaft described later and is not illustrated) are drilled. The low screw hole 53C2 corresponds to the attachment position of the pruning device 60 described above, that is, the position where the maximum pruning surface height of the pruning device 60 is lower than the plucking surface of the plucking device, On the other hand, the high screw hole 53C1 is higher than the low screw hole 53C2 by about 50 mm, that is, the position where the maximum pruning surface height of the pruning device 60 substantially coincides with or exceeds the plucking surface of the plucking device. Has been perforated.

  A pair of left and right support shafts 53D and 53D that can be attached to and detached from the pair of left and right screw holes 53C1, 53C1, 53C2, and 53C2 are cantilevered in a state of extending toward the rear of the machine body. The coupling pipe members 61A, 61A into which the support shafts 53D, 53D are inserted are inserted on both ends of the support frame 61. As a result, as shown in FIGS. 12A and 12B, the support frame 61 can take two positions, high and low, depending on the mounting position of the support shafts 53D and 53D. It becomes possible to adjust the maximum pruning surface height to a position where it is lower than the plucking surface of the plucking device, and to a position where it substantially matches or exceeds the plucking surface of the plucking device 60. Thereby, since the pruning waste becomes fine as the initial cutting width becomes smaller, the pruning device 60 can be prevented from being clogged with the pruning waste. In addition, it is also possible to support the hinge members 53 and 53 so that rotation is possible at both ends of the loading platform 49.

As described above, according to the present invention, the hinge members 53, 53 arranged between the elevating members 39, 39 moving up and down along the vertical frame of the traveling machine body 11 and the pruning device 60 are used as the pivots. The hinge member 53, so that the pruning device 60 is pivoted up toward the front of the machine body so that the pruning device 60 is positioned lower than the traveling device 20 in a state where the pruning device 60 is extended. When the other end portion 53 at the top of the pruning device 60 Ru mounted in a fixed state, the amount of projection of the aft body is shortened. Moreover, the cutting angle of the cutting blade 62 with respect to a pruning surface changes with the attitude | position change of the pruning apparatus 60 rotated suitably. Thereby, even if the pruning device 60 is extended so as to be positioned lower than the height of the traveling device 20, the turning performance can be ensured, and there is no hindrance during transportation and storage of the aircraft. In addition, it is possible to provide a mounting structure for a pruning device that allows easy adjustment of the angle of the cutting blade 62 of the pruning device 60.

  Further, since the cutting blade 62 can be raised and lowered by appropriately rotating the pruning device 60 without using the lifting devices 39, 39, the operability of the machine is further improved, and the pruning surface of the teacup, that is, The cutting height can be easily aligned.

  Furthermore, in order to support the pruning device 60 in a state of projecting rearward from the traveling device 20, the body structure is greatly changed to an existing plucking device having a plucking device attached to the lower center of the traveling body 11. It becomes possible to attach easily without.

  In addition, when applied to a tea garden management machine, for example, it is easy to replace various attachments such as a mid-cutting device, deep plowing, cultivator, subsoiler, compost application device, fertilizer application device, control machine, etc. Even humans can improve work efficiency.

  In addition, according to the present invention, the pruning device 60 is rotated in a flip-up manner toward the front of the machine body, with the rotation fulcrum positioned in front of the rear ends of the traveling devices 20 and 20 as the center. Thereby, in the state where the pruning device 60 is rotated, the overall length of the machine body can be further shortened.

  Furthermore, according to the present invention, the hinge members 53, 53 are provided with telescopic cylinders 53, 53 as driving means for rotating the pruning device 60. Thereby, the pruning apparatus 60 can be rotated easily and an operator's effort can be reduced.

  Furthermore, according to the present invention, the expansion and contraction cylinders 53 and 53 as driving means for rotating the pruning device 60 are supplied with driving force by the engine and the hydraulic pump 34 as a driving source for driving the traveling devices 20 and 20. Is done. As a result, by increasing the number of parts and weight by sharing the drive source, the manufacturing cost can be reduced.

  In addition, this invention is not only applied to a tea garden management machine, For example, it can apply also to a riding type plucking machine, a riding type middle mower, an agricultural working machine, etc.

It is a left front perspective view of the tea garden management machine to which this invention was applied. It is a right front perspective view in the example. It is a right back perspective view in the example. It is a side view of the airframe rear part in the example. It is a perspective view of the airframe rear part in the example. It is a perspective view of the aircraft rear part left side in the example. It is the side view which showed the state which overhanged the pruning apparatus in the example to the body back. It is a rear view in the example. It is the side view which showed the state which rotated the pruning apparatus in the same example to the front side of the body in a flip-up manner. FIG. 10 is a rear view of FIG. 9. It is a perspective view which shows the structure of the connection part of a loading platform and a pruning apparatus. (A), (b) is a perspective view which shows the attachment state of two kinds of high and low of a pruning apparatus.

DESCRIPTION OF SYMBOLS 10 Tea garden management machine 11 Traveling machine body 12 Front side frame 13 Rear side frame 20 Traveling apparatus 34 Hydraulic pump 39 Lifting member 51 Telescopic cylinder 53 Hinge member 60 Pruning device

Claims (3)

In the mounting structure of the pruning device, which is mounted so as to be able to move up and down in a state where it is extended so as to extend to the rear of the aircraft, on the rear of the traveling aircraft that travels across the teacup with the traveling device,
Between the elevating member that moves up and down along the vertical frame of the traveling machine body and the pruning apparatus, a hinge member that allows the pruning apparatus to be pivoted up toward the front of the machine body is disposed, One end portion of the hinge member is pivotally attached to the lifting member side, and the other end portion of the hinge member is positioned lower than the height of the traveling device in a state where the pruning device is extended. An attachment structure for a pruning device, which is fixed to the upper portion of the pruning device.   2. The pruning device mounting structure according to claim 1, wherein a rotation fulcrum of the hinge member is positioned in front of a rear end portion of the traveling device.   Drive means for rotating the pruning device is disposed between one end side of the hinge member fixed to the elevating member and the other end side of the hinge member fixed to the pruning device. The attachment structure of the pruning device according to claim 1, wherein

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