JP2884256B2 - Drill anchor device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a drill anchor device for fixing a formwork for constructing a guide side wall of a linear motor car at a predetermined position.

<Problems to be solved by the present invention> Linear motors used in linear motor cars are:
It is composed of coils corresponding to the primary and secondary sides of the induction motor and a reaction rail.

As shown in FIG. 7, the coil a is mounted on the opposing surface of the guide side wall b laid at an interval, and the linear motor car c runs between the coils a.

Therefore, very high precision is required for the construction of the guide side wall b.

<Object of the present invention> The present invention has been made in order to solve the above-described problems, and a mold for constructing a guide sidewall of a linear motor car is securely fixed at a predetermined position, and An object of the present invention is to provide a drill anchor device capable of improving construction accuracy.

<Means for Solving the Problems> That is, according to the present invention, in a device for fixing a mold forming a guide side wall of a linear motor car at a predetermined position, a drill rod having a vertical axis is provided below the mold. It is rotatably mounted, and this drill rod is configured to be able to reciprocate in the axial direction and protrude below the bottom of the formwork,
This is a drill anchor device that is configured so that the drill rod is driven downward from the bottom surface of the formwork to take a reaction force for fixing the formwork.

<Description of the Present Invention> Hereinafter, the present invention will be described in detail.

<B> Overall Structure of Construction Device (FIGS. 1 to 3) First, the overall structure of the construction device for the guide sidewall of the linear motor car will be described.

(1) Form carrier The form carrier 1 is a gantry that moves by mounting equipment such as a form.

As shown in FIG. 3, the form carrier 1 is of a self-propelled type using a tire 11, a rail type or the like, and is driven by an electric or hydraulic motor or the like.

Further, an overhanging portion 12 is provided on the upper portion of the form carrier 1 so as to overhang both right and left sides in the moving direction.

A traveling trolley 13 used for concrete placing work or the like is suspended from the overhang portion 12.

(2) Inner / Outer Form The inner form 2 has the same shape as the inner surface of the guide side wall b, and the outer form 3 has the same shape as the outer surface of the guide side wall b.

Teflon processing is preferably performed on the surfaces of both the mold frames 2 and 3 in consideration of ease of demolding.

When the inner form 2 is mounted on the form carrier 1, the inner form 2 is attached to the inner form support 21, and the inner form support 21 is connected via a plurality of inner form cylinders 22 (FIG. 3). Indicates the case of three cylinders), and the inner formwork 2 is connected to both sides of the lower part of the form carrier 1 in the moving direction so that the inner formwork 2 faces outward.

The outer formwork 3 is attached to the outer formwork support 31 in the same manner, and the overhang portion 12 is connected via a plurality of outer formwork cylinders 32.
The outer mold 3 is connected to the inner mold 2 so as to face the inner mold 2 on both sides.

The cylinders 22 and 32 for the inner and outer molds are arranged so that the inner and outer molds 2 and 3 can move vertically, horizontally and diagonally.

Therefore, the positions of the inner and outer mold frames 2 and 3 can be finely adjusted by adjusting the strokes of the cylinders 22 and 32.

Although the stroke accuracy of the cylinders 22 and 32 is about 0.1 mm, in order to improve the construction accuracy, the form carrier 1 should be designed with a member that minimizes the amount of deformation and bending. Confirmation is required.

<B> Drill anchor device Next, the drill anchor device of the present invention will be described.

The drill anchor device 4 is for fixing the inner and outer mold frames 2 and 3 at predetermined positions.

 1 and 2 show a drill anchor device 4.

A drive motor is provided as a rotary drive source of the drill anchor device 4.
Use 41.

Bearings 42 and 43 are provided at both ends of the drive motor 41 in the axial direction.
Attach.

A piston rod 44 is mounted on the bearing 42 side, and a piston 45 is mounted on a free end of the piston rod 44.

 On the other hand, a drill rod 46 is mounted on the bearing 43 side.

The drill rod 46 is detachably attached by a rod chuck 47 attached to the end of the bearing 43.

Further, a plate-like holding member 48 is attached to the drill chuck 46.

The presser fitting 48 has a through hole in the center, and the drill rod 46 is penetrated into the through hole, and is movably mounted along the drill rod 46.

Then, this drill anchor device 4 is supported by the inner and outer form supports.
Stored in the lower part of 21, 31.

FIGS. 1 and 2 show a case where it is built in the outer form support 31, but it is also built in the inner form support 21.

An air cylinder chamber 33 and a storage chamber 34 are formed below the outer frame support 31.

One end of two air passages 35 communicates with the air cylinder chamber 33 near the upper and lower ends, and the other ends communicate with an air pump or the like.

On the other hand, the storage room 34 has a bottom plate 36 integrated with the outer frame support 31.

In the storage room 34, a guide rail 37 is laid vertically.

Through holes 39 and 49 are formed coaxially in the partition wall and the bottom plate 36 between the air cylinder chamber 33 and the storage chamber 34, respectively.

When storing the drill anchor device 4, the piston rod 44 is passed through the through hole 39, and the drill rod 46 is inserted through the through hole.
The piston 45 is housed in the air cylinder chamber 33, and the drive motor 41 and the like are housed in the housing chamber.

<C> Measurement and control system (FIG. 4) The present invention is configured to detect and control the accurate positions of the form carrier 1 and the inner and outer forms 2 and 3.

The form carriage 1 is equipped with an inclinometer 6 and a reflection mirror 61.
Are mounted one on each side of the form carrier 1 in the moving direction.

Behind the form carrier 1, two total stations 62 (transit with an automatic tracking type distance measuring device) for collimating each reflecting mirror 61 are installed.

Once the collimation is set, the total station 62 is capable of automatically tracking a moving object and performing dynamic three-dimensional positioning.

The basic data of the horizontal angle, the vertical angle, and the oblique distance measured by the inclinometer 6 and the total station 62 are as follows:
It is sent to the control computer.

It should be noted that a video camera can be connected to the total station 62 and remote control can be performed while watching a monitor television.

In addition, the control computer is connected with a drill anchor device 4, a form controller, a traveling device of the form carrier 1, an operation panel, a limit switch, and the like.

After the positioning of the inner and outer forms 2 and 3, the drill anchor device 4 can be controlled so that the driving and pulling into the subgrade concrete 5 can be automatically performed in conjunction with other operations.

The mold controller is a device that adjusts the stroke of each of the cylinders 22 and 32 according to a command from the control computer, and these cylinder strokes are fed back to the control computer again.

In addition, since the cylinders 22 and 32 are controlled three at a time, it is necessary to synchronize them.

Traveling devices such as tires 11 and electric or hydraulic motors,
Based on the position data of the form carrier 1 from each measuring device, automatic control is performed to move the form carrier 1 to a predetermined position.

<D> Construction method Hereinafter, the construction method will be described.

(1) Rebar assembly, form carrier moving and fixing First, the roadbed concrete 5 is laid on the ground on which the guide measuring wall b is to be constructed.

Next, the prefabricated reinforcing bars and the like assembled in the factory are assembled at predetermined locations at the locations where the guide side walls b are to be constructed.

Then, the form carrier 1 is installed between these reinforcing bars in a movable direction along the planned construction line, and the form carrier 1 is moved to the concrete placement position.

At this time, based on the basic data of the horizontal angle, the vertical angle, and the oblique distance measured by the inclinometer 6 and the total station 62, the form carrier 1 can be accurately moved to a predetermined driving position.

After stopping the form carrier 1, the form carrier 1 is fixed at a predetermined position by a rail clamp or a drill anchor device or the like.

(2) Formwork Positioning After the formwork carriage 1 is fixed, the position and orientation of the formwork carriage 1 are measured by the inclinometer 6 and the total station 62.

Then, based on the position and orientation data of the form carrier 1, the required strokes of the cylinders 22 and 32 of the left and right inner and outer forms 2 and 3 are calculated. The inner and outer forms 2 and 3 are moved to the positions.

(3) Formwork fixing Since the inner and outer form supports 21, 31 have a cantilevered structure at the lower side where the concrete pressure is large when concrete is cast, the lower portions of the inner and outer form supports 21, 31 are It is automatically fixed on the roadbed concrete 5 by the drill anchor device 4.

That is, the driving motor 41 is driven to rotate the drill rod 46, and at the same time, air is fed to the upper chamber in the air cylinder chamber 33, the piston 45 is pushed down, and the drill rod 46 is driven into the subgrade concrete 5.

Thus, the inner and outer form supports 2 and 3 can be fixed together with the inner and outer form supports 21 and 31.

(4) Installation of Wife Form, Concrete Casting After fixing the inner and outer forms 2 and 3, the wrist form is attached to the end of the guide side wall b in the extending direction by a conventional method.

Then, concrete is poured between the inner and outer forms 2 and 3.

The casting is performed by a boom type pump truck, and a tremy tube that can move up and down in accordance with the casting height is used so that junk does not occur on the surface on the side of the inner mold frame 2 where accuracy is required.

The tremee pipe is held and driven by a traveling trolley 13 suspended on both overhanging portions 12 of the form carrier 1.

Also, a vibrator to be used at the time of placing concrete is flexible in order to maintain the accuracy of the inner and outer forms 2 and 3.

(5) Surface ironing and demolding The ironing of the cast concrete surface is performed by the conventional method.

Next, the drill rod 46 of the drill anchor device 4 is pulled out of the roadbed concrete 5.

Then, the strokes of the inner and outer mold frames 22 and 32 are controlled to release the inner and outer mold frames 2 and 3 from the mold.

In this case, as shown in FIGS. 5 and 6, the stroke of each cylinder 32 is adjusted so that the outer mold frame 3 is gradually peeled off from the upper portion of the guide side wall b and the entire surface is cut off.

 The inner mold 2 is similarly peeled off.

(6) Mold cleaning / cleaning, oil application After removing the mold, the surfaces of the inner and outer molds 2 and 3 are cleaned by a rotating brush suspended on the traveling trolley 13.

Since the surfaces of the inner and outer molds 2 and 3 are Teflon-treated, oil application is not considered necessary, but if necessary, the nozzles attached to the traveling trolley 13 can be used to cover the entire surface of the inner and outer molds 2 and 3. Apply oil.

<Operation of the present invention> Since the drill anchor device 4 is configured as described above, the piston 45 is moved up and down by adjusting the supply and exhaust of the air in the air cylinder chamber 33, and the drill rod is moved.
46 can be driven into the subgrade concrete 5 and pulled out.

In the state in which the drill rod 46 is driven, as shown in FIG. 3, the chuck 47 is brought into surface contact with the press fitting 48, and further, the press fitting 48 presses the bottom plate 36, so that the pull-out resistance of the drill rod 46 is reduced. It can be transmitted to the outer frame 3 via the outer frame support 31.

Therefore, the outer formwork 3 can be reliably fixed on the roadbed concrete 5.

 The inner mold 2 can be similarly fixed.

<Effects of the Present Invention> Since the present invention has been described above, the following effects can be expected.

That is, by driving the drill anchor device,
The mold can be securely fixed at a predetermined position.

For this reason, it is possible to prevent the mold from shifting due to the concrete pressure at the time of placing the concrete, and to accurately position the mold.

Therefore, a highly accurate guide side wall can be constructed.

[Brief description of the drawings]

 FIGS. 1 and 2: explanatory drawing of the drill anchor device of the present invention FIG. 3: explanatory drawing of the entire guide side wall construction device FIG. 4: explanatory drawing of the measuring system FIG. 5 and 6: explanatory drawing of the demolding work FIG. Figure: Guide sidewall illustration

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiromichi Miyazaki 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Daisei Construction Co., Ltd. No. 1 Taisei Corporation (58) Fields surveyed (Int. Cl. ⁶ , DB name) E04G 17/00-17/12 E04G 11/34 E04G 21/16

Claims (1)

(57) [Claims] 1. An apparatus for fixing a formwork for constructing a guide side wall of a linear motor car at a predetermined position, wherein a drill rod having a vertical axis is rotatably mounted below the formwork. Is configured to be able to reciprocate in the axial direction and protrude below the bottom of the formwork, and to drive the drill rod below the bottom of the formwork so as to take a reaction force for fixing the formwork. The configured drill anchor device.