JPH0738456Y2 - Auger excavation depth control device for boring column car - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is applied to, for example, an auger device for a digging column truck equipped with an auger device at the tip of a boom that is mounted on a chassis so that it can be undulated, extended, and swiveled. Related to the present invention relates to an auger excavation depth control device for a boring column car, which controls the excavation depth when excavating a building hole such as a utility pole.

[Conventional technology]

The standing work of electric poles for supporting power lines or telephone lines (hereinafter abbreviated as building pillar work) is the entire work process of building pillar work, that is, the building pillar work including digging work is performed manually. It was Therefore, since the work time is long and more labor is required, the labor cost is increased and the cost of the building column becomes huge, and the work itself is extremely difficult. The development of mechanization is being carried out at a rapid pace, but the mainstream of conventionally developed digging column trucks is, for example, a digging device (auger device) equipped at the tip of a direct extension boom equipped on a work vehicle. In the digging device, first the digging work for the building column is performed, and then the digging device used for the work before the tip of the direct extending boom is stored on the side of the direct extending boom, and then the wire is inserted from the tip of the boom. Suspend utility poles, etc. with the hooks suspended by, and guide the lower end of utility poles, etc. to the previously dug hole (this guidance is an auxiliary work for operators other than the operator who is performing undulation, expansion, contraction, turning, etc. of the boom. Staff members do) It is of the type to be erected.

That is, in the present situation, the digging column vehicle having the above structure is capable of mechanically performing the digging work and the lifting work of electric poles, which were once done by human power.

By the way, even if the above-mentioned digging column vehicle is used, it is necessary to drive and control the boom with the latest precautions in order to keep the auger device and the columnar body vertical to the ground when working, which imposes a heavy burden on the operator.

[Problems to be solved by the device]

In other words, in the building pillar work using the above-mentioned boring column car, after setting the boring column car at an appropriate position with respect to the planned building column position, plan to excavate the tip of the auger device equipped at the boom tip. After moving and arranging just above the position, the auger device is lowered and driven to rotate forward while excavating (as described above, in order to excavate the auger device in the correct vertical direction with respect to the ground, descending excavation of the auger device is performed. Along with this, it is necessary to perform a subtle boom drive control in which the boom length and undulation angle are reduced in conjunction with each other.) When the appropriate excavation depth is reached, the boom is stopped and stopped, and then the auger device is pulled back while rotating in reverse. After that, the operator actually measures the drilling depth of the hole using a scale, etc., and if the drilling depth is insufficient to maintain the height of the building pole of the utility pole strictly, do not collapse the auger device around the hole again. So It is the actual situation that the planned excavation depth is obtained by repeating the work of inserting it carefully and performing the same excavation again, and in the case of over excavation, backfilling while compacting to maintain a firm ground. .

As described above, in the excavation work using the conventional boring column car, the worker does not rely on his intuition or experience to judge whether or not the excavation depth has reached the planned depth during the excavation work. Inevitably, therefore, the work itself of repeating the auger device insertion / removal work and backfilling work is complicated,
As described above, it is the actual situation that this series of work depends on the human power and manual work of the worker, etc.
There were various problems in terms of labor saving and ensuring safety.

[Means for Solving the Purpose and Problem of Invention]

The present invention has been made in view of the above-mentioned problems, and an object thereof is, for example, a hole excavation structure equipped with an auger device at the tip of a boom that is undulated, telescopically and swivelly mounted on a chassis. The present invention is to provide an auger depth control device for a boring column car, which is related to an auger device for a bogie and controls the excavation depth when excavating a building hole such as a utility pole. An auger excavation depth control device for a digging column vehicle equipped with an auger device at the end of the boom, the base part of which is undulated and retractable on the turntable of the boom, and detects the extension and contraction length of the boom. Boom length detector, a boom hoisting angle detector that detects the hoisting angle of the boom, a digging depth setting device that sets the digging depth by the auger device, and a signal from each of the detectors of the auger device. Excavation depth And a calculator for comparing the calculated excavation depth with the excavation depth set by the signal from the setting device, and the excavation depth of the auger device reached the excavation depth set by the signal from the calculator. The display device is sometimes operated, or the controller is used to stop the operation of the boom.

[Action]

Since the above-mentioned configuration is adopted, for example, when excavating a hole in a utility pole during construction work, a hole excavation device (auger) equipped at the tip of the boom of a construction excavation column car is planned. Move it directly above the position and install the tip of the digging device on the ground, first input the initial position to the boom length detector and the detection signal detected by the boom hoisting angle detector to the calculator,
Next, the depth for excavation is set in advance by the excavation depth setting device. Then, the excavation work is performed by operating the digging device and reducing and raising and lowering the boom. In this state, as the excavation work progresses, the calculator calculates the excavation depth by the excavator using the signals from the boom length detector and boom hoisting angle detector, and the excavation depth set by the setting device. When the digging depth of the digging device reaches the preset digging depth, the signal from the calculator activates the display device to inform the operator that the digging device has reached the set digging depth. Alternatively, the controller is actuated to stop the boom contraction and hoisting and lowering operations. Therefore, the digging device can be accurately guided to the planned digging depth to perform the digging work quickly and easily. Moreover, the driving of the digging device is interrupted during the digging work, and the digging depth is actually measured by the worker. Further, there is no need to repeat the work of excavation or backfilling again, and an operator for that is not required, so that the working efficiency is significantly improved and the fatigue of the operator can be reduced.

〔Example〕

Hereinafter, one embodiment of the auger excavation depth control device for a digging column vehicle according to the present invention will be described in detail with reference to FIGS. 1 (a), (b), (c) and FIG.

In the figure, reference numeral 1 is a digging column vehicle equipped with an auger digging depth control device for a digging column vehicle according to the present invention. The digging column vehicle 1 mounts a sub-frame 1a on a chassis. It is configured so that sufficient strength and safety can be obtained even when various bodywork, which will be described later, are mounted. Reference numeral 2 denotes an outrigger device which is provided on the left and right front and rear of the subframe 1a so that it can be projected and grounded. The outrigger device 2 is operated by an operation device (not shown) provided on the subframe 1a or the like to operate the vehicle body. Support horizontally and stably. 3 is the subframe 1a
The turntable 3 is mounted on the rear side of the subframe 1a, and the turntable 3 is configured to be rotatable with respect to the subframe 1a by a hydraulic motor (not shown) built in the subframe 1a. Reference numeral 4 denotes a multi-stage boom whose base end is rotatably supported on the turntable 3 (in this embodiment, a boom having a three-stage retractable structure including a base end boom 4a, an intermediate boom 4b and a tip boom 4c is exemplified). . The hoisting operation of the multi-stage boom 4 is performed by moving the cylinder tube to the turntable 3 side.
The boom hoisting cylinder 26 pivotally attaches the bottom of the piston 26a, and the tip of the piston rod 26b is pivotally attached to a bracket attached to the lower surface side of the base boom 4a. Further, the expansion and contraction of the multi-stage boom 4 is performed by a boom expansion and contraction cylinder 25 built in the base end boom 4a and the intermediate boom 4b. The multi-stage boom 4 is composed of a winch, a suspending wire, a sheave, a suspending hook, and the like, and a hook 5 for suspending, for example, a utility pole in an excavated hole is provided at the tip of the boom 4c.

Reference numeral 6 denotes an auger device (drilling device). The auger device 6 includes an auger support device 7 provided at the tip of the tip boom 4c, and an auger rotation drive device 8 (hydraulic motor) suspended vertically by the auger support device 7. And a reducer), a shaft 9, a series of members including an auger screw 10 and an auger head 11, and an auger storage device 12 provided on a side portion of the proximal boom 4a, that is, The storage wire 13 having one end fixed to the side of the base boom 4a and the other end locked to the auger screw 10 is wound around the auger screw 10 by using the drive of the auger rotation driving device 8 for rotating the auger screw 10. The auger storage device 12 is arranged so that the auger screw 10 is pulled toward the side portion of the base boom 4a and stored in the side base portion of the base boom 4a in a sideways holding state. On the side of 2 and is vertically suspended from the auger support device 7 locked to the tip of the tip boom 4c, as shown in FIG. 2, and is stored along with the side portion of the base boom 4a during storage. It is like this.

Further, A is an auger excavation depth control device which is provided on the sub-frame 1a and operates and controls the auger device 6, and FIGS. 1 (a) and 1 (b) are explanatory diagrams of operation and FIG. 1 (c).
As shown in the block diagram, a boom length detector 20 for detecting the boom length 1 and a boom hoisting angle θ indicating the position of the tip of the auger head 11 positioned immediately above the planned excavation position H and a boom hoisting angle detection, respectively. Device 21, a digging depth setting device 22 for setting and inputting a planned digging depth D ₂ , and a computing device 23 for computing the digging depth D one by one by receiving each input signal from each of the detectors 20, 21 and the setting device 22. And a valve controller 25 for controlling the boom telescopic cylinder 25 and the boom hoisting cylinder 26 in response to the input signal of the operation result of the operator 23, the hoisting angle θ of the boom 4 with respect to the operator 23, the boom The conditions for the length 1 and the excavation depth D (initial position D ₁ , final position D ₂ ) are set with the tip of the auger head 11 in contact with the ground at the planned excavation position H. That is, when the tip of the auger head 11 is in contact with the ground, the values of θ and l detected by the boom length detector 20 and the boom hoisting angle detector 21, and the excavation depth initial position D by the excavation depth setting device 22. ₁ (0 value) and the planned excavation depth D ₂ (~ m) end position are input.

When the tip of the auger head 11 reaches the preset excavation depth, the signal from the computing unit 23 activates the display device S to notify the operator that the auger head 11 has reached the preset excavation depth. Alternatively, the valve controller 24 is actuated to stop the boom contraction and lowering and lowering operations.

Hereinafter, the operation of the auger excavation depth control device for a digging column vehicle according to the present invention will be described based on the above configuration.

That is, in the excavation work using the digging column vehicle 1 that employs the auger digging depth control device for the digging column vehicle of the present invention,
After the digging / construction column vehicle 1 is unfolded and set at an appropriate position with respect to the planned excavation position H, the auger head 11 attached to the lower end of the auger device 6 equipped at the tip of the multistage boom 4 is operated by operating the multistage boom 4. tip ground (FIG. 1 (a) see) on the ground G of the expected excavation position H of, and drilling depth D ₂ of the cycle position of the excavation depth D ₁ scheduled initial position in the drilling depth setting device 22 (~m)
Enter. In this state, the boom length l ₁ detected by the boom length detector 20 and the boom hoisting angle detector 21 is detected.
The detected value of the boom hoisting angle θ ₁ is also input to the arithmetic unit 23 at the same time.

When the pre-operation of the auger device 6 is completed, a predetermined hydraulic oil is supplied to the auger rotation drive device 8 to start excavation work.

Then, as the excavation work progresses, the expansion / contraction length corresponding to the excavation depth of the multi-stage boom 4 detected by the boom length detector 20 and the boom hoisting angle detector 21 and the detected value of the hoisting angle are sequentially calculated by the computing unit. 23, the result of the comparison operation between the initial position and the final position is obtained by the calculator 23, the output of the calculator 23 is input to the valve controller 24 one by one,
When the auger head 11 reaches the final position (scheduled excavation depth D ₂ ), the valve controller 24 sends a control signal (operation stop signal) to the boom telescopic cylinder 25 and the boom hoisting cylinder 26. As a result, all operations for extending and retracting the boom telescopic cylinder 25 and boom hoisting cylinder 26 are stopped, and the excavation work is completed.

Therefore, it is possible to accurately guide the auger device 6 to a planned excavation depth and perform excavation work quickly and easily. Therefore, the driving of the auger device 6 is not interrupted during the excavation work, and the actual measurement of the excavation depth and the repeated excavation and backfilling, etc. are not repeated, and no manpower is required for that, and the work efficiency is significantly improved. At the same time, operator fatigue can be reduced.

[Effect of device]

As described in detail above, the present invention provides an auger excavation depth control for a digging column vehicle in which a base of a boom that is undulated and retractable is pivotally supported on a turntable on a chassis and an auger device is provided at the tip of the boom. A device, which is a boom length detector that detects an extension / contraction length of the boom, a boom hoisting angle detector that detects a hoisting angle of the boom, and a digging depth setting device that sets a digging depth by the auger device. A calculator from which the excavation depth of the auger device is calculated from the signals from the detectors, and a comparison between the excavation depth set by the signal from the setting device and the calculated excavation depth; and a signal from the calculator Since it is configured with a display device that operates when the excavation depth of the auger device reaches a set excavation depth, or a controller that stops the operation of the boom, At the time of excavating the hole of the utility pole in the field, move the digging device (auger) equipped at the tip of the boom of the digging columner to the position just above the planned hole digging position and place the tip of the digging device on the ground. First, the initial position is detected by the boom length detector and the boom hoisting angle detector, and the detection signal is input to the calculator. Then, the excavation depth setting device is used to set the excavation depth in advance. Then, the excavation work is performed by operating the digging device and reducing and raising and lowering the boom. In this state, as the excavation work progresses, the calculator calculates the excavation depth by the excavator using the signals from the boom length detector and boom hoisting angle detector, and the excavation depth set by the setting device. When the digging depth of the digging device reaches the preset digging depth, the signal from the calculator activates the display device to inform the operator that the digging device has reached the set digging depth. Alternatively, the controller is actuated to stop the boom contraction and hoisting and lowering operations. Therefore, it is possible to accurately guide the digging device to the planned digging depth and perform the digging work quickly and easily. Moreover, the driving of the digging device is not interrupted during the excavation work, and the worker does not repeat the work of measuring the excavation depth, re-excavation or backfilling, and the operator is not required for that. It has various excellent effects such as not only significant improvement but also reduction of operator fatigue.

[Brief description of drawings]

1 (a) and 1 (b) are operation explanatory views of an auger excavation depth control device for a digging / constructing column vehicle according to the present invention, respectively.
FIG. 2 is a block diagram of an auger excavation depth control device, and FIG. 2 is an explanatory diagram showing excavation work of a digging depth column vehicle equipped with the auger digging depth control device for a digging column car according to the present invention. 1 ... Drilling column car, 1a ... Subframe, 2 ... Outrigger device, 3 ... Turntable, 4 ... Multi-stage boom,
4a ...... basic boom, 4b ... intermediate boom, 4c ... tip boom, 5 ... hook, 6 ... auger device (drilling device), 7
... Auger support device, 8 ... Auger rotation drive device, 9 ...
… Shaft, 10… August Krew, 11… Auger head, 12… Auger storage device, 13… Storage wire, 20…
… Boom length detector, 21 …… Boom hoist angle detector, 22…
… Drilling depth setter, 23 …… Calculator, 24 …… Valve controller, 25 …… Boom telescopic cylinder, 26 …… Boom hoisting cylinder, 26a …… Cylinder tube, 26b …… Piston rod, A …… Auger drilling depth Control device, D ... excavation depth, G ... ground, H ... planned excavation position, S ... display device, l ... boom length, θ ... boom hoisting angle.

Claims (1)

[Scope of utility model registration request] 1. An auger excavation depth control device for a digging column truck, comprising a turntable on a chassis, which pivotally supports a base part of a boom that is undulating and expandable and which is equipped with an auger device at the tip of the boom. From a boom length detector that detects the extension and contraction length of the boom, a boom hoisting angle detector that detects the hoisting angle of the boom, an excavation depth setting device that sets the excavation depth by the auger device, and each of the detectors. And a calculator for comparing the excavation depth set by the signal from the setting device with the excavation depth calculated by the signal from the setter, and the excavation of the auger device by the signal from the calculator. An auger excavation depth of a digging column vehicle characterized by comprising a display device that operates when the depth reaches a set excavation depth, or a controller that stops the operation of the boom. Control device.