JPH01192917A - Operation at height using gondola - Google Patents

Abstract

PURPOSE:To safely connect steel tubular piles in succession by a method in which an expandible arm is rotatably set on the top of a leader for excavator or earth auger, and operations are made by a vertically movable gondola hung down from the tip of the arm. CONSTITUTION:When connecting piles by driver or earth auger on construction site, an arm 4 is pivotally supported on the upper part of a leader 1 for pile driver, etc., in a horizontally turnable manner, where the arm 4 is set in an expandible or contractible manner. A gondola 12 for operation is hung down through a vertically movable wire 11 from the tip of the arm 4. The gondola 12 is operated by using an operating board on which workers can work. Earth augers or steel tubular piles can thus be safely connected by workers on the gondola 12 at height.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for working at high places using a gondola, and more specifically, the present invention relates to a method for working at high places using a gondola, and more specifically, a worker or the like rides on a gondola to drive antibodies into the ground or to drill deeper holes. This paper relates to a method for working at high places using a gondola to perform work such as adding an earth auger.

(Prior art) In civil engineering construction work, especially foundation work, work to drive antibodies is always performed to reinforce the ground.

When injecting this antibody, II! ! It is common to drill a hole in the board using an earth auger or the like, insert an antibody into the hole, and then drive the antibody using, for example, a weight-type pile driver, a diesel-type pile driver, or the like.

The main bodies that support these earth augers, weight type pile driving machines, diesel type pile driving machines, etc. are all installed upright on a swivel device that is rotatably supported by a traveling device that has an endless track that can move forward and backward. It has a structure that is equipped with a so-called leader made by connecting cylindrical bodies, and various attachments such as the earth auger, weight type pile driving machine, diesel type pile driving machine, etc. are supported by this leader so that they can be raised and lowered. be done.

In other words, the main body is a general-purpose machine, and various operations are performed depending on the types of attachments attached to the main body.

When attaching these attachments, the reader may be tilted toward the front of the main body during replacement work, etc.
For example, when adding parts, etc., parts are often attached with the leader in an upright position from the viewpoint of work efficiency.

For this reason, this leader is attached with a gondola that can be raised and lowered and can swing freely around its support center.

Among these gondolas, an example of a gondola manufactured and sold by Nippon Pi Co., Ltd. is shown in Figure 5, which is a perspective view.
1L will be introduced below.

That is, the reference numeral (51) shown in FIG. 5 is an upright leader, and this leader (51) is equipped with various attachments, such as an electric motor equipped with a speed reducer for rotating the so-called earth auger, and a diesel-powered pile driving machine. A pair of guide bars (52 ) is attached, and the pair of guide rods (52) are suspended by two wire ropes (53), and a frame (54) is attached.
is arranged so that it can be raised and lowered freely.

Also, this frame (54) is
A pair of winches (55
) is raised and lowered by operating an operating device (56) provided below the wire rope (53) and winding it down.

In addition, a hinge portion (57) is provided at the lower part of one side of the frame (54) and at the upper side separated from the lower part by a predetermined distance.
However, they are mounted so that their axes are coaxial and parallel to the longitudinal axis of the guide rod (52).

The arm (58) is formed by these hinge portions (57).
The gondola (59) is supported so as to be movable in the horizontal direction via the upper arm (58), and an arcuate guide rail (60) that guides one movement of the gondola (59) is connected to the upper arm (58). ) is placed at the corresponding position.

Although not shown, this gondola (59) also prevents the gondola (59) from making a single movement due to the reaction force during work when a worker or the like riding in the gondola performs high-altitude work. In order to do this, the guide rail (60) is provided with a clamp device that fixes the gondola (59) in a detachable manner.

Therefore, when a worker etc. gets on the gondola (59) and operates the operation bag ff1 (5G), the winch (55)
is activated, and this winch (55) pulls the wire rope (5
3), the gondola (59) moves up and down along the guide rod (52).

When this gondola (59) reaches the desired predetermined position in the vertical direction of the leader (51), the worker etc. stops the vertical movement of this gondola (59) and moves this gondola (59) The gondola (59) is moved around the hinge part (57) to bring it close to the target work area, and then the gondola (59) is moved by the clamping device.
) to the guide rail (60), for example, to add an earth auger to drill a deeper hole in the ground, or to drive a longer steel pipe pile, etc. We are currently carrying out additional work, etc.

In addition, an electric motor equipped with a speed reducer for rotating the earth auger or a weight of a weight-type excavating machine is raised and lowered by a wire rope hung from a sheave provided at the top of the leader (51). The wire rope hangs down freely, and in rare cases the wire rope may come off the sheep or get caught on the protrusion of an adjacent building. As described above, the gondola (59) is raised, lowered, and oscillated, and the wire rope is fixed and removed.

(Question 8 to be solved by the invention) In high-altitude work using a gondola having the above configuration,
For example, if there is only one earth auger or if the horizontal work range is narrow, this problem is less likely, but if the earth auger has multiple axes or the horizontal work range is wide, the following still remains. There are problems with working at heights as explained below.

In other words, if the earth auger has multiple axes or has a wide horizontal work range, due to the movement range of the gondola,
Since workers cannot approach the work area, they cannot perform all the work while riding on the gondola.

In particular, when adding multi-shaft earth augers, each earth auger has already been inserted into the drilled hole and is in an upright position, so it is not necessary to topple the leader and perform the work to add all the earth augers. It is possible.

Therefore, in the above-mentioned cases, it is necessary to use a work vehicle equipped with a gondola to add more earth augers.

Of course, it is possible to perform the replenishment work by suspending the earth auger from the river to be rejoined using a crane vehicle, but in either case, there is the problem of having to use another work vehicle, etc. .

In order to avoid the above-mentioned problems, it is possible to arrange gondolas on both sides of the leader, but if there are multiple earth augers, for example three or four,
Not only is it impossible to perform additional work on one or two centrally located earth augers, but it is also economically disadvantageous because the frequency of drilling with such multi-axis earth augers is relatively infrequent. There will be no.

In other words, since gondolas have a simple structure, they may not seem expensive, but as is well known, gondolas are subject to the "Gondola Safety Regulations" in the Industrial Safety and Health Act to ensure the safety of workers, etc. Since it is subject to regulations such as "Gondola Structural Standards", inspection costs are incurred based on multiple inspections, and it is expensive considering its simple structure.

Furthermore, depending on the extent of the work area, there may be cases where the work can be done while leaning forward.

In such a case, it is desirable to use another work vehicle for safety reasons, but from an economical point of view, there is a strong tendency for the work to be continued.

Of course, in such a case, there is a risk that the worker or the like may fall, even though the work is carried out with the iF attached.

Therefore, the present invention utilizes a gondola that allows workers to easily approach the work site regardless of the horizontal work range without using another work vehicle or the like. The purpose is to promote methods of working at heights.

(Means for Solving the Problems) The gist of the high-place work method using a gondola according to the present invention is that a gondola is provided on the top of an erected leader and is rotatable in the horizontal direction, and the tip moves in the radial direction of the leader. A gondola is suspended at the tip of the flexible arm so that it can move up and down in the vertical direction, and the gondola can be moved to any position around the axis of the leader by manipulating the gondola, with less machining required. It is characterized by being removably fixed and capable of performing work at predetermined heights.

(Function) In the present invention, the method for working at high places using a gondola is as described above, so that when a worker etc. gets on the gondola and operates the gondola, the arm can move 11 times and its tip can move freely in the radial direction of the leader. The gondola can be moved around the leader, moved close to the leader, discharged, and moved up and down in the vertical direction of the leader. can be approached at any position around the axis.

Therefore, workers can approach the target site and perform predetermined high-place work.

(Example) An embodiment of the present invention is shown in FIG. 1 which is an explanatory view of the gondola in a vertically installed state, FIG. 2 which is a plan view of the telescopic arm device, FIG. 3 which is a side view of the telescopic arm device, and FIG. This will be explained with reference to FIG. 4 which is a front view.

That is, the code (1) shown in the figure is the electric motor 09 with a reduction gear.
This leader is equipped with a guide (la) to guide It is suspended from a wire rope (1c), and is raised and lowered along the guide (la) by winding up and down the wire rope (lc).

A cylinder (2) made of a circular steel pipe is erected at the center of the top of the leader (1), and a support plate (3a) is rotatably mounted on the top of the cylinder (2) via a swing bearing (3). The supporting plate (3a) is supported by a telescopic arm (4) that is freely extendable and retractable on the upper surface of the supporting plate (3a), an electric hydraulic pump θ'7), and engaged with the swivel bearing (3). )
A turning motor OE for turning the motor was installed in each case.

The telescopic arm (4) has a rectangular outer cylinder (5) and an inner cylinder (
6), and more specifically, the inner cylinder (6) is slidably fitted inside the outer cylinder (5).

A pair of brackets (5a) are attached to the upper part of the outer cylinder (5) on the opposite side of the inner cylinder (6), and this inner cylinder (6)
A pair of brackets (6a) are also provided at positions corresponding to the pair of brackets (5a) at the tips of the brackets (5a), and a bottle (6a) is installed in the through holes of both brackets (5a) and (6a), respectively. 7) and (8), a hydraulic cylinder (9) is installed, and although not shown, the rond side boat and bottom side boat of this hydraulic cylinder (9) and the electric hydraulic pump θ are interposed. Hydraulic piping was installed between the power and the t-magnetic switching valve.

Further, the cylinder (9) on the tip side of the inner cylinder body (6)
A pair of winches (Go) which are perpendicular to the longitudinal center of the telescoping arm (4) and rotatable around a horizontal axis are supported on the tip side of the pair of brackets (6≦) of the river. A gondola 021 was suspended by a wire rope (10) hung from each winch 00.

The gondola θ is connected to the electric hydraulic pump (+71
In addition to installing an operation panel 04 for operating the gondola θ'IJ, swing motor Ol, winch 00),
A ljl street member 0ω made of rubber, for example, is wrapped around the leader (1) side part of the gondola 12a), and the gondola 02) is provided with a pair of bands 0ω for releasably fixing them.

Next, a method for working at high places using a gondola configured as described above will be described below.

That is, when a worker or the like gets on the grounded gondola 02) and operates the operation 104), the operation signal is transmitted via the control cable 01 to the winch OI, the dynamic hydraulic pump 07), and the swing motor 0[ Since the winch 0 [D1 electric hydraulic pump 0 and the swing motor 0 [I] each operate in response to the operation signal.

Therefore, the electric hydraulic pump 0? ) This gondola 02) is operated by a telescopic arm (4) that is telescopically operated by a hydraulic cylinder (9) that extends and retracts based on the action of the leader (02).
1) or away from the leader (1), and the arm (4) moves towards the leader (1) due to the operation of the swing motor 00.
1) Turn around the radial center.

Therefore, this gondola 021 moves in an arc around the leader (1), and the wire rope (!1) is hoisted up and lowered by the operation of the winch 0[ll.
This gondola also moves up and down in the vertical direction of the leader (+).

In other words, workers and the like riding on this gondola can easily approach any position around the leader (1).

When this gondola 02) approaches the target predetermined position, the operation of the operation panel 0 is stopped and the band OQ
As a result, the buffer member 05) of the child rail (12C) is fixed in contact with a predetermined position near the predetermined position.

Therefore, workers can remain on the gondola Q21 and utilize other work vehicles, etc., when adding multiple earth augers, as in the case of work using a conventional gondola when the work area is wide. It is now possible to perform work such as adding earth augers or adding steel pipe piles without having to lean over.

Note that the present invention is not limited to the above-described embodiments (but includes all configurations based on the same technical idea).

Therefore, for example, in this embodiment, the winch 0 [ll is provided at the tip of the arm (4), but the winch OI can also be provided on the gondola O side. It is also possible to operate each of the winch 0IID, electric hydraulic pump 07), and swing motor O1 by radio control.

Further, in this embodiment, the arm is a telescoping arm (4), but this telescoping arm (4) can be rotated, for example, around the axis 6 of the leader, and can be moved up and down about the axis of the horizontal support bin. It is also possible to use an integrated swing arm 210 made of a non-extendable rectangular cylinder or the like that is supported so as to be movable in one direction.

(Effects of the Invention) In the present invention, the arm, which is horizontally rotatable and whose tip is movable in the radial direction of the leader, is provided at the top of an upright leader, and the tip of the arm is provided with an arm that can be moved up and down in the vertical direction. A gondola is installed vertically, and the gondola can be moved to any position around the axis of the leader, and can be fixed so as to be detachable with little machining to perform predetermined high-place work. I did it like that.

Therefore, when a worker or the like gets on the gondola and operates it, the gondola moves in an arc around the leader due to the 12 movements of the arm, and the leader moves in the radial direction of the leader at the tip of the arm. Since the gondola not only approaches and moves away from the leader (and also moves up and down in the vertical direction of the leader), it is possible to move this gondola to any position around the axis of the leader.

By fixing this gondola at a desired predetermined position, there is no need to use other work vehicles or the like as in the case of conventional work using gondolas, which is economically advantageous.

In addition, because the location is extremely close to the designated location, there is no need for workers to lean over while working.As a result, workers can do all their work in a comfortable position while riding on the gondola. This has made it possible to reduce the risk of falling accidents for workers, etc.

Therefore, the present invention is extremely advantageous in that a worker can easily approach the work area using a single gondola, regardless of the horizontal work range, without using another work vehicle or the like. , and was able to establish a useful method for working at heights using gondolas.

4. Explanation of the drawings Fig. 1 is an explanatory diagram of the hanging state of the gondola used in the working method of the present invention, Fig. 2 is a side view of the telescopic arm device that suspends this gondola, and Fig. 3 is a diagram of this gondola. FIG. 4 is a front view of a gondola according to the present invention, and FIG. 5 is a perspective view of a conventional gondola.

(1)-Leader, (2)-Cylinder, (3)-Swivel bearing, (3aL-Support plate, (4)-Telescopic arm, (5)-
Outer cylinder, (6) - Inner cylinder, (9) - Hydraulic cylinder, 00
- winch, (lI) - wire rope, 0ku gondola, OL - control cable, 04) - operation panel,
07) - Electric hydraulic pump, 0B) - Single swing motor, (
To) -1--Cable reel.

Claims (1)

[Claims] (1) A gondola is vertically mounted on the tip of an arm that is installed above an upright leader and is rotatable in the horizontal direction and whose tip is movable in the radial direction of the leader. , a gondola characterized in that the gondola can be operated to move to any position around the axis of the leader, and fixed so as to be detachable and detachable with little shaking to enable work at predetermined heights. How to work at heights.