JPS6024131A - Chain saw controller of pruning machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is a self-elevating type branch cutting machine for cutting branches of planted trees, and the chain saw is controlled so as to drive only at positions where branches are present. This invention relates to a chain saw control device for a branching machine.

(Prior Art) A self-elevating pruning machine shown in FIG. 1.2 has been known.

That is, an arch-shaped main frame 6 equipped with drive wheels 2...Φ that abuts the outer periphery of a tree trunk 1, and a sub-frame 5'' also equipped with idler wheels 4 are pivotally connected at a connecting fulcrum 6. , both frames 6.5 are configured to be pulled together by a spring 7 or the like on the side opposite to the connection fulcrum 6, while the engine 8
The power is changed speed appropriately in the Mitsushiron case 9,
Drive wheel 2... and idler wheel 4 fixedly installed on the rear side of the main frame
In addition to being transmitted to the chainsaw 10 installed upward in the middle, it is also transmitted to the drive wheel 2, the fist, which climbs up the trunk 1 in a spiral shape, and uses the chainsaw 10 to cut a branch 11 on the way. It cuts.

Additionally, in order to prevent wear on each moving part, a hydraulic pump is driven to lubricate each part.

Furthermore, Mitsushiron case 9 has engine 8, chainsaw
10, and is configured to be able to freely swing around a swing fulcrum 0, and this swing fulcrum 0 is set forward in the direction of travel from the center of gravity of the Mitsushiron case 9, etc., so when ascending, the chain saw 10 swings toward the trunk 1 by its inertial force and transmission reaction force, and the distance between it and the trunk 1 is determined by suction, and the amount of protrusion of the branch 11 to be cut is kept constant. The chainsaw 10 separates from the trunk 1 due to the inertial force.

In addition, when this pruning machine climbs a certain distance, the vertical switching mechanism 14 is activated and the vertical switching lever 15 is automatically switched, and this time, the driving wheel 2 and the fist are reversed, and the pruning machine descends in the same spiral pattern.

By the way, this type of pruning machine is configured to directly transmit the power of the prime mover 8 to the chain saw 10, and the chain saw 10 has a prime mover t! Usually, tree branches 11 are constantly driven while driving the A8.
Since the branches are pruned every few years, they are not present in the lower half of trunk 1, but are scattered in the upper part.

When pruning a tree like this, the chainsaw 10 is driven even in a place where there are no branches 11 while ascending, and continues to rotate even when descending, when no pruning is necessary.

For this reason, the chain saw 10 is significantly worn and lubricating oil is consumed unnecessarily, which is uneconomical.

(Object of the Invention) An object of the present invention is to avoid unnecessary driving of the chain saw by sensing the presence of a branch and controlling the driving of the chain saw.

(Structure of the Invention) The present invention holds a tree trunk with idle wheels and driving wheels, drives the driving wheels with a prime mover to move up and down in a spiral pattern, and stands above the aircraft body while climbing. In a self-elevating pruning machine that sequentially pruns with a chain saw, a nuclear detection device is installed in front of the chain saw, and the power of the chain saw is interrupted by the detection signal of the detection device, thereby eliminating unnecessary This prevents the chain saw from being driven.

(Example) Specific examples of the present invention will be described below with reference to the drawings.

As shown in FIG. 13.4fl, a detection device 16 is provided at the front of the chainsaw 10, a power disconnection device 17 is provided below the chainsaw bar 12, and a controller 18 and a hydraulic pump 19 are provided near the Mitsushi gun case 9. to be placed.

The power of the prime mover 8 is transmitted to the drive wheels 2 . . . a generator and a hydraulic pump 19, and is also transmitted to the chain saw 10 via the power interrupter 17.

Further, the detection device 16 includes a rotation rod 20 that is rotatably supported, and a detection switch 21 that senses when the rotation rod 20 rotates by a predetermined amount, and the detection signal of the detection switch 21 is The signal is wired so as to be sent to the controller 18.

The controller 18 is powered by a generator driven by the prime mover 8.
It operates by being supplied with electric power, and the detection switch 21
When a sensing signal is received, a valve opening signal is instantaneously issued to the electromagnetic valve 22. On the other hand, when the sensing signal of the detection switch 21 disappears, a delay timer setting time (for example, 2 5 seconds), the valve opening signal of the solenoid valve 22 is configured to disappear, and if the sensing signal is received from the detection switch 21 again before the set time has elapsed, the delay timer is activated. It also allows you to count the set time from the beginning.

Further, the hydraulic pump 19 is piped so as to apply oil pressure to the hydraulic cylinder 26 via the electromagnetic valve 22 and to supply oil for lubricating various parts.

The hydraulic cylinder 23 is connected to an operating lever 24 of the power disconnection device 17 by a link, and the hydraulic cylinder 26
The electromagnetic valve 22 has a structure in which a ram protrudes and swings the operating lever 24 when hydraulic pressure is applied to the hydraulic cylinder 23. This is to release the hydraulic pressure.

The operation will be explained using the above configuration.

When the branch 11 approaches the front of the chain saw 10 while the pruning machine is moving upward, the rotating rod 20 of the detection device 16 is pressed by the branch and rotates, and the detection switch 21 located below is activated by the rotating rod. 20, and when it reaches a predetermined position, it emits a sensing signal.

The sensing signal is sent to the controller 18, and upon receiving the sensing signal, the controller 18 instantaneously issues a valve opening signal to the electromagnetic valve 22.

Then, the solenoid valve 22 guides the hydraulic pressure generated by the hydraulic pump 19 to the hydraulic cylinder 26, and this hydraulic pressure is transferred to the hydraulic cylinder 26.
Push out the ram 25 of No. 6 and swing the operating lever 24 of the power interrupter 17.

As a result, the power of the prime mover 8 is transmitted to the change gear 10 via the power disconnection device 17, and the change gear 10 starts rotating.

When the cutting of the branch 11 is completed, the rotation rod 20 of the detection device 16 returns to its original position by the tensile force of the spring 26 since there is no obstacle.

Then, the sensing signal of the detection switch 21 disappears, and the controller 1
When the delay timer in 8 finishes counting the set time,
The valve opening signal applied to the solenoid valve 21 disappears, and the change-10 stops.

Now, if a wave approaches again and presses the rotating rod 20 before the set time of the delay timer has elapsed, the delay timer will return to its initial value again and the valve opening signal will not disappear.

That is, as long as the next branch presses the detection device 16 by a predetermined amount within the set time of the delay timer, the change-10 continues to rotate.

(Effects) As described above, since the present invention controls the chain saw by providing a branch detection device, the chain saw can be driven only at the position where the branch is present, reducing wear on a part of the chain saw and causing damage. It is economical because it does not consume the necessary lubricating oil, and when attaching and detaching the pruning machine to the tree trunk, the chain saw is stopped even if the prime mover is rotating, so the work can be done safely. I can do it.

[Brief explanation of drawings]

Figure 1.2 is a plan view and front view showing a conventional pruning machine, and Figure 6
The figure is a schematic diagram of the main parts of a pruning machine embodying the present invention, and FIG. 4 is a block diagram showing an outline of the present invention. (Code) 1... Trunk 2... Driving wheel 4... Idler wheel 8... Prime mover 10... Change-16... Nuclear detection device applicant Shiirei Kogyo Co., Ltd. agent (8103) Patent attorney Eiji Omura 153

Claims (1)

[Claims] The tree trunk (1) is held by the idler wheels (4) and the drive wheels (2...), and the drive wheels (2...) are driven by the prime mover (8) to move up and down in a spiral manner. In addition, in a self-elevating pruning machine that pruns sequentially with a chainsaw α0) that stands above the machine while climbing, a nuclear detection device (16) is installed in front of the chainsaw α0), and the detection device (16) is installed in front of the chainsaw α0). 16) A chain saw control device for a pruning machine, characterized in that the power of the chain saw (10) is switched on and off based on the sensing signal of item 16).