JPS5840453B2 - Mobile support device in pruning machine - Google Patents

Description

[Detailed description of the invention] The present invention relates to a mobile support device in a pruning machine.

In other words, in a pruning machine configured such that a cutting machine is configured to cut branches around the tree trunk by using a running body to run along an annular guide fitted at intervals around the outer circumference of the tree trunk, the tree trunk is located inside the annular guide. It is possible to cut each tree neatly by supporting it so that it does not bias, so that the cutting machine can cut around without biasing, and the tree trunk can be received in the circular guide, and the tree trunk can be easily clamped with each clamping roller. so that
Further, the present invention is designed so that the pruning machine can be quickly removed from the tree trunk, and the pruning machine can move smoothly along the tree trunk while pruning can be performed reliably and suitably.

Next, the embodiment shown in the drawings will be described.

Figures 1 and 2 show a part of the pruning machine, in which a rack 4 is formed on the outer periphery of an annular guide A that has a larger diameter than the tree trunk T, and a circular arc portion a that becomes a part of the annular guide A is formed. ,
The length is longer than the diameter of the tree trunk T, one end is pivoted by a pin 5, the other end is detachably attached by a pin 5', and the transmission case 6 has a small engine E installed at one end. is equipped with a chainsaw-shaped cutting machine 7 that can cut branches.
A running body B is installed in the transmission case 6, and the running body B is pressed against one side 8 of both support wheels 8, 8', which are joined to the inner peripheral surface of the annular guide A so as not to come off, by a spring 9. and a pinion 10 driven by the small engine E.
is constructed by meshing with the outer peripheral rack 4 of the annular guide A.

Reference numeral 11 denotes a U-shaped support rod made of a pipe, and the lower portions of both support rods 12, 12 are respectively fixed to upper portions near both ends of the support rod 11 with bolt nuts 13, and annular guides A approaching both ends of the circular arc portion a are fixed. The upper ends of both support rods 12, 12 are fixed to the lower surface part with bolts and nuts 14, respectively, and the lower part of the support rod 12' is fixed with a bolt and nut 13 above the bent central part of the U-shaped support rod 11.
, and attach the upper end of the support rod 1z to the lower surface of the annular guide A on the opposite side of the arcuate part a with the bolt and nut 14.
The three supporting rods 12, 12, 12' are configured to support the annular guide A from below on three sides of the circumference.

Both support plates 15, 15 are fixedly installed at the bending center of the support rod 11 near the support rod 12', and a support frame 16 inserted between the support plates 15 and 15 has a large number of holes 17 in the longitudinal direction. , and selectively insert bolt holes H8 and 18 to be inserted into both holes of both support plates 15 and 150 into matching holes 1γ to complete the support frame 16.
are arranged so as to be movable and adjustable relative to the support rod 11 side, and a case 19 is integrally fixed to the tip of the support frame 16.

A cylindrical metal 21 at the bottom of the upper stamping arm 20 and a cylindrical metal 21 at the top of the lower stamping arm 20' are rotatably inserted into the upper and lower positions of the tip of the support frame 16, respectively. , shafts 28.23 fitted into cylinders 22, 22 at the ends of both arms 20.20' are connected to the shafts 28.23 and can rotate along the circumferential surface of the tree trunk T in the vertical direction. , string 41. The clamping roller 1a moves forward and backward by a mechanism such as a tension spring 25.

1b, respectively, and both ends of a tension spring 250 are connected to connecting pieces 24, 24, which are respectively fixed at the ends of both arms 20, 20'.

In the case 19, the worm gear 26 is meshed with the wheel gear 2γ, and the gear 28, which is coaxial with the wheel gear 27, is meshed so that both gears 29.29 rotate in the same direction. @30
Sprockets 31 and 31 are respectively fitted and inserted into the two cylinders 21 and 21 shown below, and sprockets 31 and 31 are respectively fixed on the outer ends, and both clamping rollers l.
a.

Sprocket 32.3 fixed to the end of shaft 23, 23 of 1b
2 and sprockets 31, 31 each have a chain 33.
．． 33, and an operating string 35 is engaged with a pulley 34 coaxial with the worm gear 26 on the outside of the case 19 so as not to come off, and by pulling the operating string 35, both clamping rollers 1a and 1b are moved simultaneously. It is configured so that it can be rotated in the direction.

Plate bodies 37, 37 having elongated holes 36, 36, respectively, are fixedly installed near the intermediate portions of both the arms 20, 20', and extend vertically to the front part of the support frame 16.
Both upper and lower ends of the control rod 39 fixed by 38 are bent in the same direction to form engagement ends 40.40, and both engagement ends 40.40 are inserted into the elongated holes 36, 36, respectively. 1 at the tip of the drawing board body 37, 370.
It is constructed by connecting both ends of a book string 41, respectively.

At the end of the support frame 16, one end side of the actuating piece 42 is pivotally supported via a pin 43, and a wheel body 4 is pivotally supported on the actuating piece 42.
4 is engaged with the middle part of the edge 41, and the actuating piece 42 is fixed with a stopper 45 that abuts against the upper end of the support frame 16 when rotated upward, and a long operating lever is provided on one side of the actuating piece 420. It is constructed by fixing a cylindrical metal 47 into which one end of the cylindrical member 46 can be fitted.

In addition, a large number of adjustment holes 49 are formed in a part of the support metal 48, and a connecting plate 50 is fixed to one end of the U-shaped support rod 11.
are aligned with the adjustment hole 49 so that the mounting position can be changed freely, and the bolts and nuts 51 and 51 are used to connect and fix the parts.
A lateral pin 53 fixed to the lower end of the lower punching arm 52' and a lateral pin 53' fixed to the upper end of the lower punching arm 52' are rotatably inserted into the upper and lower support holes 54, 54 of the support member 48, respectively. The tips of both arms 52, 52' can touch and rotate the circumferential surface of the tree trunk T in the vertical direction, and include an operating arm 67, a rotating lever 64, a bending lever 62, 62', which will be described below as an example. Support pieces 55 and 55 protrude from the tips of both arms 52 and 52', each supporting the clamping rollers 2a and 2b, which move forward and backward by a mechanism such as a tension spring 56, which are pivotally attached to each other.
Both ends of the tension spring 56 are connected to each other.

Connecting pieces 58, 58 each having a long hole 57° 57 are protruded near the middle of both arms 52, 52', and the supporting metal 48
The upper and lower ends of the control rod 59 fixed vertically are bent in the same direction, and the engaging ends 60 and 60 are inserted into the elongated holes 57, 57, respectively, and engaged, and both arms 52,
Interlocking arms 6 similarly protruding from the base of 52'
One end of the bending levers 62, 62' is connected to the tips of the bending levers 62, 61' so as to rotate freely through pins 63, 63, and the other ends of the bending levers 62, 62' are connected to both ends of the turning lever 64. Rotatably connected via pins 63 and 63, respectively,
A shaft 65 fixed in the middle of the rotating lever 64 is inserted into a support hole 66 of the support metal 48, one end of an operating arm 67 is fixed to the shaft 65, and an operating string is connected to the tip of the operating arm 67. 6
8 is connected to a pin 69 at the tip of the actuating piece 42.

Further, at the other end of the U-shaped support rod 11, clamping rollers 3a>3b that can roll vertically in contact with the circumferential surface of the tree trunk T are installed vertically.
The operation string 70, which is similar to the operation string 68 in the above structure, is symmetrically constructed in exactly the same manner as the configuration in which the operation piece 4 is attached.
It is configured by being connected to the pin 69 of No. 2.

Note that when the tree trunk T enters inside the annular guide A, three sets of clamping rollers 1a, Ib, 2a, and 2b.

Each roller is arranged and configured so that 3 a t 3 b can come into contact with the tree trunk T from three equally spaced positions on the circumferential surface of the tree trunk T.

. However, when pruning work, the pruning machine should be
At the bottom of the annular guide A, the pin 5' is removed to open the arcuate part a as shown by the imaginary line in Fig. 2, and the tree trunk T is placed inside the annular guide A. As shown, each clamping roller 1a, 1b, 2a, 2b, 3a
, 3b is pulled inward by the tensile suspension ring, and when the operating lever 46 inserted into the barrel 47 is rotated as shown by arrow A in FIG. 11, the result is as shown in FIG. The actuating piece 42 rotates around the pin 43 in this way, so that the string 41 and each clamping roller 1a, 1
The operating strings 68 and 70, which are connecting members that appropriately connect the movements of the rollers 1a, 1b, 2a, 2b, 3a, and 3b, are pulled all at once, and both the holding rollers 1a, 1b are pulled out by tensioning the tension spring 25. direction, and the clamping rollers 2a, 2b, 3.
A and 3b are also stretched outward by the tension spring 56, and the tree trunk T can be placed in the center of the annular guide A with each roller retracting as shown in FIG.

Next, when the operating lever 46 is rotated in the direction of the reverse arrow A so that the stopper 45 abuts against the support frame 16, each set 41°68.70, which is an interlocking mechanism, is loosened by the amount of tension that has been applied so far. Therefore, the clamping roller 1a,
1b is provided by a tension spring 25 and by clamping rollers 2a and 2b.

3a and 3b are brought into pressure contact with each other by the tension springs 56 in the direction in which they move together, that is, toward the periphery of the tree trunk T, and the respective clamping rollers are joined from three sides around the tree trunk T as shown by imaginary lines in FIG. Moreover, the holding rollers 1at1b) 2a, 2b, 3a, and 3b are pressed against each other vertically on three sides, and the tree trunk T is pressed against the tree trunk from three sides.
becomes the center position of the annular guide A, and the whole is firmly supported.

Therefore, the circular arc part a is closed and fixed with the pin 5',
When the engine E is started, the pinion 10 meshes with the rack 4 and rotates, and the running body B moves around the annular guide A due to the pressure rolling of the support wheels 8 and 8'.
The cutting machine 7 moves along the circumference of the tree trunk T while rotating and cuts the branches one after another.

While observing this state, when the operator bends the operating string 35 and rotates the pulley 34, the chain 33° 33 is driven to forcibly rotate both the clamping rollers 1a and 1b in the same direction, resulting in pressure contact. Both gripping rollers 1a, 1b
As a result of the rotation, the whole tree moves upward around the tree trunk T in a substantially straight line, so that branches around the upper part can be cut one after another and pruning can be performed.

In that case, the control rods 39, 59 and the elongated hole 36° 36.57
, 57, the device is independently suspended within a certain range, and even if one of the upper and lower clamping rollers changes its posture, the other does not change its posture and is in pressure contact with the tree trunk T, which prevents the entire device from slipping. Since the cutting machine can always move in a constant posture without any problems, the relative positional relationship between the cutting machine and the tree trunk can be maintained in the set state, allowing suitable pruning work.

In addition, both the support plates 15, 15 are connected to the hole 17 of the support frame 16.
By adjusting the movement of the connecting plate 50 according to the adjustment hole 49 of the support metal 48,
The position of each clamping roller 1a, 1bt2a, 2b, 3a, 3c can be moved forward and backward toward the center of the annular guide A, and can be adjusted according to the thickness of the tree trunk T.

Note that when the pulley 34 is reversed by operating the operation string 35 in the opposite direction, the holding rollers 1a and Ib can be rotated in the opposite direction and the entire assembly can be lowered.

As described above, the present invention provides a pruning machine in which the cutting machine is configured to cut branches around the tree trunk, and the cutting machine is configured to cut branches around the tree trunk by a running body along the annular guides fitted at intervals around the outer periphery of the tree trunk. In addition to opening and closing a part of the
A plurality of clamping rollers that support the annular guide are installed so that they can move forward and backward in the radial direction and roll in the vertical direction, pressing against the tree trunk from at least 30,000 degrees around the circumference, and the clamping roller in one direction is attached to an operating lever, etc. All the clamping rollers are interlocked via an interlocking mechanism so that when the clamping rollers on the other side move forward and backward toward the tree trunk side by force operation, the clamping rollers on the other side move forward and backward at the same time, and at least one of the clamping rollers is forcibly rotated. With this structure, the tree trunk can be received inside the annular guide, and the tree trunk can be easily held by each clamping roller, and the pruning machine can be quickly removed from the tree trunk. It is possible to support the tree trunk so that it does not deviate in one direction, and the cutting machine can rotate without deviation and cut each branch in an orderly manner. It has the feature that it can be pruned and can be pruned conveniently.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of a part of the pruning machine, Fig. 2 is a plan view thereof, Fig. 3 is a plan view of main parts with some parts omitted, and Fig. 4 The figure is a partially cutaway side view of Figure 3, Figure 5 is a side view of the opposite side of Figure 4, and Figure 6 is a partially cutaway side view of Figure 3.
The figure shows a part of Fig. 5, Fig. 7 is an enlarged view of a part of Fig. 4, Fig. 8 is a plan cross-sectional view of a part of Fig. 7, and Fig. 9 is a part of Fig. 3. Figure 10 is an exploded perspective view of Figure 9, and Figure 1 is a side view of Figure 1.
1 is an explanatory diagram of the operation of FIG. 5, and FIG. 12 is an explanatory diagram of the operation of FIG. 9. T: Trunk, A: Circular guide, B:
...Traveling body, 7... Cutting machine, 1a, 1b
52a, 2b, 3a. 3b...Holding roller 46...Operation lever 4L68, 70...(interlocking mechanism).

Claims (1)

[Claims] 1. In a pruning machine configured such that a cutting machine is configured to cut branches around a tree trunk by using a running body to run along an annular guide fitted at intervals around the outer circumference of a tree trunk, a part of the annular guide can be freely opened and closed. At the same time, a plurality of clamping rollers that support the annular guide are installed in such a way that they can press against the tree trunk from at least three directions around the tree trunk, move forward and backward in the radial direction, and roll in the vertical direction. All the clamping rollers are interlocked and interlocked via an interlocking mechanism so that when a control lever or the like is forcibly operated to advance or retreat toward the tree trunk side, each clamping roller on the other side moves forward or backward at the same time, and at least one of the clamping rollers is A movable support device for a pruning machine, characterized in that it is configured to rotate.