JPS5822174B2 - Emergency descent device in case of trouble with tree climbing machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an emergency lowering device for a tree climbing machine equipped with a chenosaw in case of trouble, and is used when the tree climbing machine stops at a high place in the tree due to an unexpected trouble while going up or down a tree. , so that it can be easily lowered to the ground.

If the tree-climbing machine stalls or gets caught in a tree branch while going up and down a tree, the tree-climbing machine remains stopped at the top of the tree.

In such a case, in order to lower the tree-climbing machine to the ground, it is conceivable to attach a ladder to the standing tree, have the worker climb the ladder, and then lower the tree-climb machine to the ground, but such a method is cumbersome and
It's also dangerous.

Therefore, the present invention has been made in consideration of this point, and when the tree climbing machine does not descend to the ground within a predetermined time, the pull cord in the box provided in the tree climbing machine is automatically brought down to the ground. By dropping the tree and pulling the cord, the tree climbing machine can be lowered to the ground.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a plan view of a tree climbing machine to which the emergency lowering device according to the present invention is applied while moving up and down a tree, and the body of the tree climbing machine is composed of a frame F surrounding a tree T, a floating gear 1, etc. .

Then, on the inner peripheral surface of the floating gear 1, there are three gears 2□,
2° and 23 are in mesh with each other, and wheel portions 31.3□ and 33 having lifting wheels W are connected to each of the gears 21-23.

Note that the mechanism near the wheel portion will be described in detail later along with FIG. 3.

Reference numeral 4 denotes a rotating part, which consists of an engine E1 loaded on a chassis 5, a chenosaw C1 dial part, etc.
It rotates around a standing tree t along a fixed gear (described later) located below the floating gear 1, and at that time pruning is performed using a chenosaw.

Thus, the torque of the engine E is transmitted to the chain ○ through the chain 6, and is also transmitted to the chain ○ through the belt 7 and the reducer R1.
The signal is transmitted to the gear 9 and the forward/reverse switching gear 10 through the bevel gear 8□ and the like.

The forward/reverse switching gear 10 is swingable, and as will be described in detail later, when the tree climbing machine ascends the tree t, it meshes with the forward rotation transmission gear (described later), and the idler gear 1 When the tree climbing machine descends the tree by rotating each wheel W in the forward direction through the
It meshes with a reverse rotation transmission gear (described later) to rotate each wheel W in the reverse direction.

In addition, the floating gear 1 and a part of the frame F are provided with opening/closing parts 1' and ¥, which can be opened and closed by hinges 11 and 12 and stops 13 and 14, respectively, when setting the tree climbing machine on a standing tree T. or when removing it from a standing tree, each opening/closing part 1
', F' are opened as shown by chain lines.

B is a box body which is the main body of the emergency descent device according to the present invention, and the details will be described later.

2 and 3 are respectively perspective views of the power transmission section, and FIG. 4 is a plan view of the vicinity of the dial section for setting the tree climbing height of the tree climbing machine. A fixed gear 15 with the same diameter as gear 1 is installed in parallel, and each gear is connected to gear G1.
and gear G2 are in mesh with each other.

Further, a forward rotation transmission gear G3 is coaxially attached to the gear G2, and a chain wheel G5 and a reverse rotation transmission gear G4 are attached coaxially to the gear G1.

The forward/reverse switching gear 10 is located between the forward rotation transmission gear G3 and the reverse rotation transmission gear G4, meshes with the gear 9 attached to the shaft 16, and is pivotally connected to the mounting plate 17 attached to the shaft 16. ing.

The distal end of the mounting plate 17 is resiliently supported by a spring S1, and a switching rod 18 is pivotally attached.

Further, an arm rod 17' for locking the chain wheel G5 is connected to the mounting plate 17.

A bevel gear 8 is attached coaxially with the gear 9,
The torque of the engine E is transmitted to the bevel gear 83 via the bevel gears 80, 8□.

Further, there is a section 181 at the tip of the switching rod 18, which is adapted to be pulled in the direction of arrow (A) against the spring S1 and engaged with the stopper 19.

As clearly shown in FIG. 4, the switching rod 18 extends to the side of the dial portion, and the approximately middle portion is elastically supported by a spring S2.
In addition, a hook portion 18□ for engaging the stopper 19 as described above is formed at the tip.

Further, a protrusion 18□ that protrudes toward the dial portion is provided slightly near the tip.

Further, the switching rod 18 is connected to a rotary plate (described later) inside the box body B by a wire 30.

The main components of the dial part are a ratchet wheel 20, a scale plate 21 located above the ratchet wheel 20, and a knob 22. On the scale plate 21, a numerical value indicating the height of the tree climbing machine is marked. ing.

The ratchet wheel 20 is adapted to rotate together with the knob 22.

Further, the ratchet wheel 20 is provided with a protrusion 20', and as will be described later, the ratchet wheel 20 rotates as the tree climbing machine ascends, and this protrusion 20' connects to the protrusion of the switching rod 18. 182
When it hits, the tip hook portion 18□ separates from the stopper 19.

Reference numeral 23 denotes a feed rod for rotating the ratchet wheel 20 as the tree climbing machine ascends the tree, and its substantially central portion is pivotally connected to the stop plate 24 via a shaft 25, and is resiliently supported by a spring S3.

Further, a pawl rod 26 is attached to the tip, and this pawl rod 26 engages with the ratchet wheel 20.

Therefore, a protrusion 27 is provided on the main body of the tree climbing machine,
Every time the rotating part 4 goes around the tree along the fixed large gear 15, the rear end of the feed rod 23 hits the protrusion 27, and the shaft 2
It rotates a little momentarily around 5.

At this time, the ratchet wheel 20 is rotated clockwise by one pawl by the pawl rod 26.

FIG. 3 shows a power transmission section to the lifting wheels W, and a gear 21 meshes with the inner circumferential surface of the idler gear 1. As shown in FIG.

Then, when idle gear 1 rotates, its torque is 84.85 (gear 2□, bevel gear), chains C1, C2
The signal is transmitted to each wheel W of the lifting wheel section 3 through C3.

Therefore, when the idler gear 1 rotates in the direction of arrow a, each wheel W rotates forward and moves up the tree, and when it rotates in the direction of the arrow, each wheel W rotates in the opposite direction and moves up the tree 1. descend.

In addition, as shown in FIG. 1, the inner circumferential surface of the floating gear 1 is
In addition to gear 2, there is also gear 2□.

23 are also in mesh, and as in the case of gear 21, the rotation of each gear 22, 23 is controlled by the respective lifting wheel portions 32, 23.
33 wheels W.

Figure 5 is a side view of the emergency descent device, and shows the box body B.
A rotary plate 28 is rotatably attached to the rotary plate 28 by a pin 29, and a wire 30 connected to the switching rod 18 is attached to one end.
However, a drawstring 31 is attached to the other end, and a weight 32 is attached to the tip of the drawstring 31.

The lower lid of the box body B can be opened and closed, and is closed by a stopper 33 during normal times.

The stop 33 is pivotally supported by a pin 34 on the side of the box body B, and a spring S4 is attached to the rear end.

35 is a timer device, and this timer device 35 consists of a lever 37 and a rotary rod 38 attached to the upper and lower parts of the pin 36, respectively.

Further, the tip of the rotating rod 38 is connected to the connecting rod 39°40, and the wire 4
1 to the protruding piece 33' of the stop 33.

The timer device 35 is a very common and well-known device consisting of a large number of gears and springs, and is not a special example, and its structure is complex, so the diagram shows only the main parts related to the present invention. Although the detailed structure is omitted, its handling operation will be explained below.

When the lever 37 is rotated clockwise against a mainspring (not shown), many gears of various sizes (
(not shown) starts rotating due to the restoring force of the mainspring,
The lever 37 slowly rotates counterclockwise, and the rotating rod 38 connected to the lever 37 via the pin 36 also rotates slowly counterclockwise together with the lever 37.

Then, when the rotating rod 38 rotates a predetermined amount in the counterclockwise direction,
The stopper 33 is pulled by the wire 41 and detached from the lower cover B', and the lower cover B' opens under its own weight, and the internal drawstring 31 descends to the ground (see the chain line).

Next, the operation will be explained according to the above embodiment.

First, each opening/closing part p/ of the frame F and the floating gear 1.

After opening 1' and passing the tree climbing machine body through the tree t, each opening/closing part F', 1' is closed and stopped with the stops 14, 13, and the tree climbing machine is set on the tree t.

Next, rotate the knob 22 so that its tip matches the desired value on the scale plate 21.

(For example, if you want the tree climbing machine to climb a tree by 67n, set it to 6.)

Note that when the knob 22 is turned, the mold wheel 20 also rotates, but the mold wheel 20 and the pawl rod 26 constitute a one-way clutch, so the pawl rod 26 prevents the counterclockwise rotation of the mold wheel 20. Prevents rotation, but allows clockwise rotation.

Next, the lever 37 of the timer device 35 is turned to set the operating time.

Therefore, the operating time of the timer device 35 is set to be a little longer than the time required for the tree climbing machine to move up and down the tree.

For example, if the rising height is 6 m, and the time required to raise and lower the tree is 5 minutes, the time should be set to about 6 to 7 minutes.

Next, the switching rod 18 is pulled in the direction of arrow (A) against the spring S1 to lock the tip hook portion 18□ to the stopper 19.

Then, the forward/reverse switching gear 10 swings about the shaft 16 and meshes with the forward rotation transmission gear G3 (see the chain line in FIG. 2).

At this time, the arm rod 17' engages with the chain wheel G5, and the gear G1 becomes unrotatable.

Next, when the engine E is started, the torque of the engine E is transmitted to the chain saw C through the chain saw 6, and the belt 7, reducer R, bevel gear 8□, 8°, 8
3. It is transmitted to the forward/reverse switching gear 10 via the gear 9.

Then, along with the forward rotation transmission gear 10, gear G3. G2 also rotates, and the gear G2 rotates along the outer periphery of the fixed gear 15 while rotating.
Rotate around the tree t along.

Now, at this time, the gear G1 that meshes with the idler gear 1 is also
It rotates around the standing tree t, but as mentioned above, the arm rod 17'
Because of this, the gear G□ is prevented from rotating, so the gear G1 cannot rotate on the outer periphery of the idler gear 1.

Therefore, when the gear G1 rotates around the tree t, the idle gear 1 that meshes with it is also pulled by the gear G1 and rotates around the tree t.
Rotate around the area in the direction of arrow a.

Therefore, when the floating gear 1 rotates in the direction of arrow a, each of the gears 2□ to 23 meshing with the inner peripheral surface of the floating gear 1 also rotates.
The rotation is transmitted to each wheel W as described above.

The rotation of each wheel W at this time is a normal rotation, and therefore the tree climbing machine ascends along the tree t.

Of course, when the tree climbing machine ascends the tree t, the rotating part 4 rotates around the tree t as described above, and therefore,
Branches protruding from the tree will be cut by Chenosaw C.

Now, every time the rotating part 4 goes around the tree, the feed rod 2
The rear end of the model wheel 3 instantly rotates clockwise on a protrusion 27 fixed to the main body of the tree climbing machine, and the claw rod 26 lifts the model car 2.
Rotate 0 by one claw.

By the way, this kind of tree-climbing machine generally has a chenosaw chamber length of 200 mm while going around the tree.
It is designed to rise up the tree by an amount of about 100 m).

Therefore, the rotating part 4 of the Honki climbing machine goes around the circumference of the standing tree.
While the model wheel 20 is rotated by one pawl by the pawl rod 26, the tree is raised by about 200'IIg1.

Therefore, as mentioned above, in order to set the climbing height of the tree climbing machine to 6 m, if the tip of the knob 22 is set to the number 6 on the scale plate 21, 6 m ÷ 200 original = 30, so Rotating part 4
When the mold wheel 20 has made 30 laps around the tree t and has been fed 30 pawls, the protrusion 20' of the mold wheel 20 touches the protrusion 182 of the switching rod 18.
At this time, the tip hook portion 181 is separated from the stopper 19.

Then, when the tip hook portion 181 separates from the stopper 19, the switching rod 18 is pulled by the spring S1 and moves in the direction of arrow (b), and at the same time, the forward/reverse switching gear 10 separates from the forward rotation transmission gear G3. Then, it swings around the shaft 16 and meshes with the reverse rotation transmission gear G4.

At this time, the mounting plate 17 also swings, the arm rod 17' separates from the chain wheel G5, and the reverse rotation transmission gear G4 and gear G1 are allowed to rotate (see the dotted line in Figure 2). .

Now, when the forward/reverse switching gear 10 meshes with the reverse rotation transmission gear G4 in this way, the torque of the engine E will be
The rotation is transmitted to reverse rotation transmission gear G4 and gear G1.

Then, due to the rotation of gear G1, idle gear 1
rotates in the direction indicated by the arrow, and the rotation is transmitted to each wheel W through gears 2° to 23, bevel gears 84 and 86, and wheels C1 to C3.

In this case, each wheel W rotates in the opposite direction to the previous one, and the tree climbing machine descends the tree t.

Now, as mentioned above, if the tree climbing machine does not go up and down the tree smoothly, stalls during the climb or gets caught on a tree branch, and becomes unable to go up or down, and the tree climbing machine stops at a high place in the tree,
The worker must lower the tree climbing machine to the ground by some means.

As a result of this trouble, the tree climbing machine stopped at a high place in the tree, and the tree climbing machine stopped for 6 to 7 minutes (i.e., slightly longer than the time (5 minutes) required for the tree climbing machine to ascend and descend the tree without trouble). ), the timer device 35 operates and the rotating rod 3
8 moves in the direction of the arrow.

Then, the connecting rods 39 and 40 also move in the direction of the arrow, and the stopper 33 is pulled by the wire 41 and rotates around the pin 34, so that the lower cover "
depart from.

Then, the lower cover B' opens due to its own weight, and the drawstring 31 falls underground (see the chain line in FIG. 5).

Therefore, when the operator pulls the drawstring 31, the rotary plate 28 rotates in the direction of the arrow and the wire 30 is pulled, so that the switching rod 18
The hook portion 18 of is detached from the stopper 19.

Then, as described above, the forward/reverse switching gear 10 meshes with the reverse rotation transmission gear G4.

Therefore, if the operator continues to pull the pull cord 31, the tree climbing machine will be pulled by the pull cord 31 and will be forcibly lowered to the ground.

As explained above, according to the present invention, even if a tree climbing machine encounters a problem while ascending or descending and becomes unable to descend to the ground due to its own blade, the pull string force Since the tree falls to the ground synchronously, the operator can lower the tree climbing machine to the ground by simply pulling the pull cord.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a plan view, Figs. 2 and 3 are perspective views of the power transmission section, Fig. 4 is a plan view of the vicinity of the dial section, and Fig. 5 is a side view of the main part. 18... Rotation direction switching rod, 28... Rotating plate, 30... Wire, 31... Drawstring, 35... Timer device, B...Box body, B'...Lower lid.

Claims (1)

[Claims] 1. A rotating body is pivotally mounted inside the box, and a wire connected to the drawstring and the rotation direction switching rod of the lifting wheel is attached to the rotating body,
The lower cover of the box body can be opened and closed freely, and the lower cover is locked with a stopper, and the stopper is separated from the lower cover by driving a timer to open the lower cover. , an emergency lowering device for a tree climbing machine in the event of trouble, in which the pull cord is dropped.