JPH10310247A - Air floating type transfer method and device - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To easily set a transfer route without laying rails, to enable smooth curve movement and transfer with extremely low height limitation. SOLUTION: While laying a flat plate 16 on a transfer route of a heavy load, a seam of a flat plate 16 is laid and a flat surface transfer path 14 is formed.
To form A plurality of air-floating transfer tables 12 provided with a plurality of air bladders 26 forming an air layer between the flat surface transfer path 14 and the air blowing downward are connected. The air-floating transport tables 12 are vertically connected to each other by a connecting plate 22 so that the air supply to the air bladder 26 at the connection site between the air-floating transport tables 12 is faster than that of the other air bladders 26. Air piping. The transported heavy object is mounted on a pedestal 44 formed on the air-floating transfer table 12, and the heavy object is guided and transferred together with the air-floated transfer table 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for air-floating transfer, and more particularly to a method and apparatus for easily transferring a heavy object having a weight of about several tens to 100 tons by an air-float method. Related to the device.

[0002]

2. Description of the Related Art Heaters and turbine units of power plants, etc.
When a large heavy object weighing several tens to hundreds of tons is transported to an installation location, it is necessary to move the heavy object while taking into account the allowable load on the floor.

[0003] In this type of conventional transport method, a rail is laid from a point at which a heavy object is carried in to a point at which it is installed, and
A skid configured to allow a heavy object to be mounted thereon is run and moved via a roller. Rails are laid by laying scaffolds on floor slabs, installing and fixing shaped steel rails, and laying boards on the rails. A pedestal corresponding to the shape of the heavy object is formed on the skid to stably support the conveyed object, and a plurality of rollers are laid on the lower part and moved using the rolling.

[0004]

In the above conventional method,
The work of laying the rails requires a great deal of labor and time, and it takes a very long time to actually mount the object to be transported on the skid. Normally, two rails are laid, but it is necessary to add a reinforcing beam separately due to the strength of the beam below the slab. Also, it is not possible to smoothly move curves at the direction where the direction is changed. There was a drawback that a conversion space had to be secured in the width direction. Furthermore,
Although it is possible to pass through the height of the conveyed object, there is a problem that if the conveyed object cannot be conveyed due to an upper obstacle due to the added rail height, a detour path must be separately set.

[0005] In addition, in the transfer operation after the conveyed object is mounted on the skid, it is necessary to spread a large number of rollers on the lower surface of the skid and sequentially move the rollers forward with the movement. However, there is a drawback that the accompanying work during the moving work is complicated because it is not hand-held. The present invention pays attention to the above-mentioned conventional problems, and makes it possible to set a transfer path very easily without laying rails, and to perform air levitation that enables smooth curve movement and transfer with a very low height limit. It is an object of the present invention to provide a method and an apparatus for transporting a sheet.

[0006]

In order to achieve the above-mentioned object, an air-floating transfer method according to the present invention provides a flat-surface transfer method by laying a flat plate on a transfer path of a heavy object and performing seaming of a flat plate joint. An air floating type having a plurality of air bags for forming a path and providing a guide along the path on the flat transport path and forming an air layer between the flat transport path and the air blowing downward. A plurality of transfer tables are connected, a heavy load is mounted on a pedestal formed on the air-floating transfer table, and the heavy object is guided and transferred together with the air-float transfer table.

[0007] The air-floating transfer device according to the present invention is, firstly, an air-flotation device provided with a plurality of air bags for forming an air layer between the flat surface transfer path and the air blowing downward. A plurality of air-carrying carriers are arranged, and the air-floating carriers are vertically connected to each other by a connecting plate. It is characterized by air piping so that it is faster than the side.

[0008] Second, an air-floating transfer table provided with a plurality of air bags for forming an air layer between the flat surface transfer path and the air blowing downward, and supporting one edge portion of a heavy load. And a pair of multi-roller receiving carts arranged and supported on the left and right sides of the opposite edge of the transported heavy object, and the multi-roller receiving cart is provided with a steering lever so as to be towable. is there.

[0009]

The transport path from the loading point of the heavy load to the installation location is formed by laying a flat plate, so that the transport surface is almost equal to the floor surface. The upper surface of the flat surface transport path formed by laying the flat plate becomes a sliding surface of an air-floating transfer table loaded with a heavy object via an air layer, and the sliding air does not leak from the abutting portion of the flat surface. Since the seam is provided, the pallet floating air layer is reliably formed, and a heavy object can be transported and moved with a small load. Since the guide is formed in the transport path, the movement can be restricted when the flat surface transport path is inclined.

[0010] The air-floating carrier is multiply connected, and air is supplied to the air bag on the side of the connecting portion between the air-floating carriers so that air is supplied faster than the other air-bags. When an object is loaded and floated, the portion of the pallet connecting portion floats early. As a result, the center of gravity of the heavy object is lifted up early, so that the rigid structure can be less affected by bending when lifted, and the horizontal support is finally provided when air is supplied to all air bags. Secured. Each bladder should have a flow control valve for horizontal support.

Since there is no direction restriction in the transfer of the air-floating transfer table, the inclination of the flat surface transfer path hinders accurate movement, and a pulling means such as a chain block is required. In order to make this unnecessary, the air-floating type conveyance table that supports one edge of the transported heavy object and a pair of multiple rollers that are arranged and supported on the left and right sides of the opposite edge of the transported heavy object are provided. The receiving truck with multiple rollers may be provided with a steering lever to be pulled. Thus, the operator can tow a heavy object while controlling the direction using the steering lever. The weight is supported by an air-floating carrier that slides in the air and a trolley with multiple rollers that roll, so the trolley with multiple rollers moves while maintaining the correct transport direction without requiring much traction. Can be.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of an air-floating transfer method and apparatus according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram of an air-floating transfer device according to the first embodiment. The air-floating transfer device 10 is configured by connecting a pair of air-float-type transfer tables 12, and is configured to be able to slide on a transfer path 14 that has been laid in advance from a loading position of a heavy load to an installation location. Things.

First, the transport path 14 is cured as follows. Since the slab serving as the transport surface from the position where the heavy object is loaded to the installation location is not necessarily flat, the slab surface is flat (iron plate in the embodiment) 16 to flatten the transport path.
To form a flat transport path 14. Sealing tape 18 is adhered to the butted edges of the flat plates 16 to make a seaming so that air blown out from the air-floating transfer table 12 does not leak from the butted gaps of the flat plates 16. Further, the formed transport path 14
May be flat, but may have a gentle slope. In this case, the air-floating carrier 12 moves along the slope differently from the moving path. Is installed. The guide 20 is easily formed by, for example, spot welding to the side edge of the flat plate 16 using an angle iron. Of course, it is not necessary to provide them on the entire path, but it is sufficient to provide them at least at locations where they are inclined.

When the moving path of the transported heavy object is completed by laying the flat transport path 14, the transport path 14
A transport device 10 that slides on it is placed. This transport device 1
Reference numeral 0 denotes a configuration in which a pair of air-floating transfer tables 12 are connected by a connection plate 22, as shown in detail in FIG. In the embodiment, each air-floating transfer table 12 has a structure in which a rectangular frame 24 having a shape close to a square is divided into four planes, and an air bag 26 is attached to each of the divided spaces. The air bladder 26 is basically configured by attaching an air tank 30 to the lower surface of the substrate plate 28.
By supplying pressurized air to the air tank 30 from the side 8 to expand the air, a small amount of air is blown out to the lower surface to form an air layer between the air tank 30 and the transport surface so that the air tank 30 can slide. . This is disclosed in JP-A-52-889.
No. 16, JP-A-6-171727 and the like may be used. Such an air bag 26 is inserted from the side of the rectangular frame 24 and inserted into the frame 24.
Fixed to The air-floating transfer tables 12 to which the four air bladders 26 are attached are connected to each other by a connecting plate 22. The connecting plates 22 and the rectangular frame 24 are mounted via horizontal pins to form a pair of air-floating transfer tables. The stands 12 can move up and down with each other.

Here, the supply of pressurized air to each air bag 26 is performed such that the air supply to the air bag 26A on the side of the connection between the air-floating transfer tables 12 is faster than the other air bags 26B. Air piping. That is, as shown in FIG.
4 is provided, and connection pipes 34 from the orbiting pipes 32 to the individual air bladders 26 are branched. In addition, the circulation pipes 32 along the edges of the air-floating transfer tables 12 along the side where the connection plate 22 is mounted are connected to each other by connection hoses 36. Then, an inlet hose 38 is connected to the connecting hose 36, and pressurized air is diverted to the left and right through the connecting hose 36 to supply the pressurized air to the air bags 26 of each air-floating transfer table 12. . Since the connection hose 36 is connected to the circulation pipe 32 along the edge of the air-floating carrier 12 on the side where the connecting plate 22 is attached, the air bag 26A on the side of the connection site between the air-floating carriers 12 is connected. The air is supplied to the air bag 26B side faster than the other air bag 26B side.
With the start of air supply, when viewed from the side, it initially rises in a C-shape, and lifts the center of gravity of the loaded heavy goods first. It should be noted that an accumulator 40 is mounted on each air bag 26 to suppress air pulsation, and that the horizontality of the plurality of air bags 26 can be adjusted by interposing a flow control valve 42 in the branch connection pipe 34. I have.
In addition, a pedestal 44 for fixing a heavy object to be transferred is provided on the frame 24 of each air-floating transfer table 12 so as to stably hold the load.

A description will be given of a case where the air-floating transfer device 10 according to the first embodiment configured as described above is used for transferring a large and long heavy object such as a feed water heater of a power generation facility. In advance, the transport path 14 is formed on the building slab,
As described above, the flat plate 16 such as an iron plate is laid along the path from the carry-in position to the installation location, and the seaming is performed. A guide 20 is provided on the side edge of the transport path 14 as needed. As a result, the transport path 14 has a flat surface, and at the same time, the path is defined by the guide 20, so that the transport device 10 can be slid along the transport path. The heater is placed on the transfer device 10 placed at the carry-in position. Since the heater is also long, it is mounted by passing over a pair of air-floating transfer tables 12. In this case, the center of gravity of the heater is set so as to be located at the connection site of the air-floating transfer table 12.

From such a state, the air-floating transfer table 1
The pressurized air is supplied to each of the air bags 26 of No. 2 by diverting the air from the inlet hose 38 to the left and right through the connecting hose 36 between the air-floating transfer tables 12. In each air-floating carrier 12, the air passage to the air bag 26 on the connection side is a branch connection pipe 34 on the side closer to the connection hose 36, so that each air-floating carrier 12 first has a connection plate 22 side. Air bag 26
A expands, and as a whole, the pair of air-floating transfer tables 12 rises in a C-shape. As a result, a lifting action is first generated at the center of gravity of the loaded heater so that unbalanced stress due to imbalance of the lifting support to the heater does not act and there is no possibility of unexpected damage to the conveyed product. I have to. Note that the above-mentioned V-shaped floating form can also be realized by adjusting the amount of air passing through each branch connection pipe 34 with a valve or the like.

After the supply of the pressurized air to the entire air bag 26, the flow control valve 42 is operated to adjust the level of the heater to be conveyed. In this state, an air layer is generated between the air tank 30 of the air-floating type transfer table 12 and the surface of the transfer path 14, so that sliding is possible. After such an operation, the transport device 10 may be slid along the path on the transport path 14 while being pulled by the pulling means or while performing the pushing operation. After reaching the installation location of the water supply device, align the water supply device on the anchor bolt, gradually lower it while adjusting the pressurized air supply operation while using the jack, and insert the anchor bolt into the water supply device The work is completed by tightening and fixing.

According to such an embodiment, the transport device 1
Since the overall height of 0 is only the sum of the height of the air-floating type transfer table 12 and the lift, and the running surface is formed only by laying the flat plate 16, the entire The height can be significantly reduced. For this reason, even if there is an upper obstacle at the time of transport in the existing building, it is easier to set the transport route without avoiding the upper obstacle, and furthermore, unlike the case of laying the traveling rail, only the flat plate 16 is laid. Therefore, the setting of the transport path 14 can be realized extremely simply and at low cost. Since the air-floating transfer table 12 slides on the transfer path 14 by the air layer, the load is dispersed, and the work of reinforcing the slabs and beams is almost unnecessary.

In the transfer apparatus 10 according to the embodiment, a pair of air-floating transfer tables 12 are interconnected, and a pressurized air pipe for a plurality of air bags 26 provided is lifted so that a connection portion first rises. Since it is set, the initial lifting load on the transported heavy object acts on the side of the center of gravity, whereby the supporting state of the heavy object can be stably shifted until it reaches the horizontal state.

Next, FIG. 4 shows a weight transfer device 46 according to the second embodiment. This is suitable to be applied to a case where the transported load is bulky such as a turbine unit. This device 46 is provided with one air-floating transfer table 12.
And a combination of two carriages 48 with multiple rollers. The transport path 14 may have the flat plate 16 laid thereon as described above. However, if the road surface condition is good, the transport path 14 can be transported as a slab. The air levitation type transfer table 12 is the same as that of the first embodiment. That is, the rectangular frame is divided into four planes, and the air bag 26 is attached to each of the divided spaces. The air bag 26 is basically configured by attaching an air tank 30 to the lower surface of the substrate plate. An air layer is formed between the transport surface 30 and the transport surface so that the vehicle can slide. On the other hand, the receiving cart 48 with many rollers is provided with a large number of rolling rolls 52 on a cart 50, and a swivel 52
Is attached to support heavy objects. Trolley 5
A steering lever 54 is connected to the front of the steering wheel 0, and the steering lever 54 is rotated in a desired direction while being pulled, whereby steering in the transport direction can be performed. The air-floating carrier 12 and a pair of receiving carts 48 with a large number of rollers are supported by the air-floating carrier 12 at the center of one edge of the conveyed heavy object, and the receiving cart 48 with a large number of rollers is supported by the conveying weight. It is disposed at the apex of a frame 56 formed in a planar triangular shape so as to be disposed and supported on the left and right sides of the opposing edge of the object. Although the frame 56 is not always necessary, by providing the frame 56, the load can be accurately supported at three fixed positions at the support position of the object to be transported.

In the transfer apparatus 46 according to the second embodiment, the steering operation is performed while the worker pulls the receiving carriage 48 with many rollers toward the front, and the air-floating transfer table 12 in the rear. And a worker who pushes in the left and right corners of the transported heavy object, and a total of five people could transport a dozen tons of heavy objects.

[0023]

As described above, according to the present embodiment, the work of laying the transfer path can be extremely simplified and the cost can be greatly reduced. The transfer apparatus uses an air-floating transfer table. The height of the equipment is low and the height of the equipment is small, so the entire height can be reduced even when carrying heavy objects, and it is particularly effective for conveying heavy objects when the work space is low and narrow. I do.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a working state of an air-floating transfer device according to a first embodiment.

FIG. 2 is a plan view of the air-floating transfer device according to the first embodiment.

FIG. 3 is a piping diagram of an air-floating transfer table of the air-floating transfer device according to the first embodiment.

FIG. 4 is a plan view and a side view of an air-floating transfer device according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Air-floating-type conveyance apparatus 12 Air-floating-type conveyance stand 14 Flat conveyance path 16 Flat plate 18 Seal tape 20 Guide 22 Connection plate 24 Rectangular frame 26 Air bag 28 Substrate plate 30 Air tank 32 Circulating piping 34 Branch connection pipe 36 Connection hose 38 Inlet hose Reference Signs List 40 accumulator 42 flow control valve 44 pedestal 46 air-floating transfer device 48 receiving truck with many rollers 50 bogie 52 swivel table 54 steering lever 56 frame

Claims (3)

[Claims] 1. While laying a flat plate on a transfer route of a heavy object,
A flat surface conveyance path is formed by seaming the flat plate seam, and a guide is provided along the path on the flat conveyance path, and an air layer is formed between the flat surface conveyance path and the flat surface conveyance path with air blowing downward. A plurality of air-floating carriers with multiple air bladders are connected, and a heavy object is mounted on a pedestal formed on the air-floating carrier, and the heavy objects are guided and transported together with the air-floating carrier. An air-floating transfer method, characterized in that: 2. A plurality of air-floating transport tables provided with a plurality of air bladders forming an air layer between the air-floating section and the flat-surface transport path. Air is connected to each other by a connecting plate so as to be movable up and down, and air is supplied to an air bag at a connection portion side of each air floating type transfer table so that air is supplied earlier than other air bags. Floating transfer device. 3. An air-floating transfer table provided with a plurality of air bags for forming an air layer between the flat surface transfer path and the air blowing downward and supporting one edge of a transfer heavy object, A pair of multi-roller receiving carts arranged and supported on the left and right sides of the opposing edge of the transported heavy object, wherein the multi-roller receiving cart is provided with a steering lever so that it can be pulled. Air-floating transfer device.