JP2001071912A - Transporter using jacking device, and use of transporter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To possess a hoisting mechanism to easily and safely transport a heavy load. SOLUTION: With this transporter, an upper brace 2 is installed on the upper ends of a pair of vertical frames 1. Supporting members 3 to which free casters 4 and fixed casters are attached, are connected to the lower ends of the respective vertical frames 1 through jacking devices 17, and a suspended load 14 is supported by the upper brace through a slider 10. By operating the jacking devices 17 of the transporter, the suspended load 14 placed on the floor face can be lifted, and the suspended load 14 can be easily and safely transported.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for transporting equipment used when installing equipment such as a thermal power plant, a nuclear power plant, or a chemical plant, a method of using the transport device, and a jacking device.

[0002]

2. Description of the Related Art Conventionally, as a method for transporting equipment of various plants in a narrow place where heavy equipment such as a crane cannot be used, equipment is mounted on a carrier having a traveling mechanism and transported. Transportation method is adopted.

[0003] As a method of transporting equipment of various plants along a transport route having a step, a transport method using roller pulling as shown in FIG. 9 is known. In this method, an iron plate 100 for curing is laid on a floor having a step, and a liner 101 is packed under the iron plate 100 to perform a setup for receiving a load. The worker places the roller 102 on the iron plate 100 for curing and carries out a transport operation while climbing over a step while manually pushing the device 103 placed thereon.

[0004]

However, in the transporting method using a carrier having a traveling mechanism, it is necessary to place the equipment on the carrier, so that a lifting device must be separately provided to lift the equipment. There was a problem. According to this method, when the height of the device is high, the device is merely placed on the carrier, so that there is a risk that the device may fall when the inclined surface is moved.

[0005] Further, in the transport method using roller pulling in a transport route having a step as shown in FIG. 9, there is a risk that the equipment may fall down. However, if the worker cannot hold down the device 103, there is a problem that the device falls down or the worker is injured. Further, in this method, a plurality of workers pushing and moving the device 103 as a conveyed product, a plurality of workers supporting the device 103 and performing a role of preventing the device 103 from falling down, and the rollers 102 are moved in accordance with the movement of the device 103. There was also a problem that a large number of workers, such as a plurality of workers in the role of laying and a work leader who takes charge of the entire work, were required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has a lifting mechanism provided in a transporting apparatus itself, and therefore can easily and safely transport an apparatus having a large height dimension. A transport device capable of easily transferring equipment between transport devices even when there is a level difference in the transport route and reducing the number of workers, and a method of using the transport device. And a jacking device.

[0007]

In order to achieve the above object, a transport device according to the present invention comprises a pair of vertical frames held in parallel at a predetermined interval, and a pair of the vertical frames. An upper brace installed between upper ends, a support member connected to a lower end of each of the vertical frames via a jacking device,
A traveling mechanism attached to a lower end of the support member, a slide mechanism supported by the upper bracket and movable in a horizontal direction, and a suspension mechanism locked by the slide mechanism to hold a suspended load. It is characterized by doing.

According to the transporting device of the present invention, the transporting device itself has the lifting mechanism that moves up and down by the jacking mechanism, and therefore, it is possible to easily and safely transport the suspended load even with equipment having a large dimension in the height direction. Can be.

It is desirable that the connecting portion between the vertical frame and the upper brace of the above-mentioned transporting device is constituted by loosely fitting a cylindrical portion provided on the upper bracket to a columnar portion provided at the upper end of the vertical frame. . By forming the connecting portion by loosely fitting the cylindrical portion of the upper brace to the columnar portion of the vertical frame, the space between the upper brace and the vertical frame can be expanded and contracted, and the height of the upper brace can be adjusted arbitrarily.

It is desirable that the connecting portion between the vertical frame and the supporting member is also formed by loosely fitting the cylindrical portion provided at the lower end of the vertical frame to the columnar portion provided on the supporting member. By forming the connecting portion by loosely fitting the columnar portion of the support member to the cylindrical portion of the vertical frame, the space between the support member and the vertical frame is stretchable, and the height of the support member can be arbitrarily adjusted.

As the jacking device used in the transport device of the present invention, a pantograph type is suitable.

When the jacking device is configured by arranging a plurality of pantograph-type unit jacks in parallel, the load per jacking device can be reduced, and a heavier suspended load can be transported.

Further, when the jacking device is constituted by stacking a plurality of pantograph-type unit jacks one above the other, the amount of expansion and contraction can be increased, and a suspended load having a higher height can be transported.

In this jacking device, for example, a plurality of pantograph-type four-link telescopic elements are arranged in a plurality of rows between a top plate and a bottom plate so that the nodes form a substantially straight line. Screw cylinders having mutually opposite threads are alternately and coaxially fixed, and a common drive shaft provided with a thread groove corresponding to each screw cylinder can be screwed together. . In this jacking device, a common drive shaft having screw grooves in which screw portions adjacent to a plurality of screw cylinders are alternately formed in opposite directions is screwed together, and the drive shaft is rotated to expand and contract the four links. The element can be extended and retracted, thereby raising and lowering the top plate with respect to the bottom plate. As described above, a plurality of pantograph-type four-link telescopic elements are provided and a common drive shaft is rotated, so that a load per one four-link telescopic element can be reduced.

Further, in this jacking device, by connecting the drive shaft to the electric motor via the connecting member, the suspended load can be raised and lowered by the electric motor to reduce the burden on the operator. In the case of using a transport device to transfer a suspended load suspended in at least one transport device among a plurality of transport devices to another transport device located at a height difference, that is, first, The transporting devices to be transferred are brought close to each other, and one or both of the jacking devices of the transporting devices are operated to make the heights of the slide mechanisms coincide with each other. Next, the slide mechanism is moved in the horizontal direction to transfer the suspended load on one side to another transport device. As described above, by using a plurality of the transporting devices of the present invention, it is possible to transfer the suspended load before and after the step, and to reduce the number of workers.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of the transporting apparatus of the present embodiment, and FIG. 2 is a side view of the transporting apparatus of the present embodiment shown in FIG. 1 in which a vertical frame is partially cut in the vertical direction. FIG. 3 is a cross-sectional view of the conveying device of the present embodiment shown in FIG. 1 taken along AA, and FIG. 4 is a longitudinal cross-sectional view of the jacking device used in the present embodiment.

As shown in FIG. 1, at the upper end of the vertical frame 1, there are formed columnar portions at two places for loose insertion into a U-shaped upper bracket 2 to be described later. Also, vertical frame 1
At two lower ends, there are formed cylindrical portions for loosely fitting into a U-shaped support member 3 described later.

At the lower end of the upper brace 2, a cylindrical portion for loosely fitting into the columnar portion of the vertical frame 1 is formed at two places, while a support member 3 for supporting the upper brace 2 is formed. At the upper end, columnar portions are formed at two places for loose insertion into the cylindrical portion of the vertical frame 1.

A columnar portion of the vertical frame 1 is loosely inserted into the cylindrical portion of each of the pair of upper braces 2 so as to bridge the pair of vertical frames 1. The insertion part is fixed. The columnar portions of the pair of support members 3 are loosely inserted into the cylindrical portions of the pair of vertical frames 1, and the loose insertion portions are fixed by set bolts 7. Furthermore, each upper brace 2 is connected by a connecting member.

At the lower end of the supporting member 3, a free caster-4 in which wheels rotate around both a vertical axis perpendicular to the floor and a horizontal axis parallel to the floor, and a horizontal axis parallel to the floor are provided. A fixed caster 5 that rotates about only the shaft is attached.

A plurality of cam followers 8 arranged in a horizontal plane are fixed to the upper braces 2 by a plurality of hexagon nuts 9 provided so as to correspond to the respective cam followers 8. Is mounted with a slider 10 which can be moved in the horizontal direction.

A stopper 12 is fixed to the outer surface of the upper blade 2 in the moving direction of the slider 10 with a thumb screw 11 to prevent the slider 10 from moving when not in use. Are fixed with stopper bolts 13.

A suspension bolt 15 is fixed to each of the suspended load 14 and the slider 10, and a suspension fitting 16 for connecting the suspension bolts 15 to each other.
Is attached.

Between each vertical frame 1 and each support member 3, one jacking device 17 for extending and contracting each vertical frame 1 and each support member 3 is provided.

As shown in FIG. 4, the jacking device 17 used in this embodiment includes a top plate 18 and a bottom plate 19 arranged in parallel with each other, and two sets of 4 plates inserted and fixed therebetween. It comprises a link extendable element 20 and a screw shaft 21 for expanding and contracting these four link extendable elements 20.

Each of the four-link telescopic elements 20 includes four links 22 pivotally connected to the top plate 18 and the bottom plate 19, respectively, and four blocks 23 forming an octagon by connecting the links 22.
And two screw cylinders 24 formed with reverse threads between adjacent blocks 23 fixed substantially in a straight line to each block 23.

Each screw tube 24 is screwed with a common screw shaft 21 having a screw portion corresponding to each screw tube 24. One end of a screw shaft 21 in which adjacent screw portions alternately form a screw groove that is alternately forward and reverse is provided with a screw shaft 21.
A handle 25 for rotating is provided.

Therefore, this jacking device 17 is
A set of four-link telescopic elements 20 is configured to expand and contract at a time with a common screw shaft 21.

Next, the operation of the transport device having the above configuration will be described.

A transport device is arranged on a suspended load 14 placed on the floor, one end of a suspension bracket 16 is attached to a suspension bolt 15 fixed to the suspended load 14, and the other end is a slider-1.
It is attached to the suspension bolt 15 fixed to 0.

Thereafter, the handle 25 of the jacking device 17 having the plurality of four-link telescopic elements 20 provided between the vertical frame 1 and the support member 2 is rotated in a certain direction.
When the handle 25 is rotated in a certain direction, the handle 25
The rotation is transmitted to a screw shaft 21 formed such that adjacent screwing portions attached to the screw shafts are alternately forward and reverse,
The screw shaft 21 rotates. As a result, the screw cylinders 24 fixed to the blocks 23 adjacent to each other of the plurality of four-link telescopic elements 20 are formed with reverse screws so as to be screwed with the screw shafts 21. Moving.

As a result, each of the four-link telescopic elements 20 expands, and the top plate 18 rises with respect to the bottom plate 19.

When the top plate 18 is raised with respect to the bottom plate 19, the vertical frame 1 is raised, so that the suspended load 14 fixed to the upper bracket 2 is lifted. At this time,
Set bolt 7 is loosened.

After lifting the suspended load 14 to a height that does not hinder it, the set bolt 7 is tightened to fix the position of the suspended load 14.

With the above, the suspended load 14 is lifted in the transport device, and the transport preparation is completed. After this, free
With the caster-4 side at the top, the transport device is manually pushed to the transport destination.

Although the operation of lifting the suspended load 14 has been described above, the operation of lowering the suspended load 14 is performed by rotating the handle 25 in the opposite direction to the above-described rotation direction, and by rotating each of the screw cylinders screwed to the screw shaft 21. 24 is moved in the direction of separation.
As a result, each four-link telescopic element 20 contracts in the vertical direction,
Since the top plate 18 descends with respect to the bottom plate 19, the lifted suspended load 14 can be lowered to the floor. As described above, the transport device of the present invention includes the lifting mechanism itself, and therefore can easily and safely transport the suspended load 14 even if the suspended load 14 is high.

By forming the connecting portion by freely fitting the cylindrical portion of the upper brace 2 to the columnar portion of the vertical frame 1, the space between the upper brace 2 and the vertical frame 1 can be expanded and contracted, and the height of the upper brace 2 can be arbitrarily set. Can be adjusted.

Further, by forming the connecting portion by loosely fitting the columnar portion of the support member 3 to the cylindrical portion of the vertical frame 1, the space between the support member 3 and the vertical frame 1 can be freely expanded and contracted.
Height can be arbitrarily adjusted.

The pantograph-type four-link telescopic element 20 has two
By using the jacking device 17 which is provided in a set and expands and contracts two sets of the four-link telescopic elements 20 at a time with the common screw shaft 21, the load per one of the four-link telescopic elements 20 can be reduced. it can.

The present invention is not limited to the above embodiment.

For example, in this embodiment, the upper braces 2 are constituted by a pair of U-shaped members, but the cylinders for loosely fitting the columnar portions of the vertical frames 1 at the four corners of the flat plate. It is also possible to use a member having a shape.

Further, each cylindrical portion and each columnar portion of the vertical frame 1, the upper frame 2 and the support member 3 can be reversed. That is, the cylindrical portion or the columnar portion may be formed on any member as long as it can be loosely inserted or loosely fitted.

Further, in the above description, two sets of the four-link extendable elements 20 in the jacking device 17 are used. However, the present invention is not limited to this, and three or more sets of the four-link extendable elements 20 can be used. . In the above description, one jacking device 17 is provided between each vertical frame 1 and each support member 3, but the jacking device 17 is connected between each upper frame 2 and each vertical frame 1. It is also possible to arrange a plurality of parallel frames and a vertical stack between each vertical frame 1 and each support member 3.

For example, FIG. 5 is a diagram in which a plurality of jacking devices of the transport device of the present embodiment are arranged vertically, and thus the jacking device is provided between each support member 3 and each vertical frame 1. 17 are arranged one on top of the other.
It is also possible to dispose one jacking device 17 between each and the upper braces 2.

This makes it possible to increase the amount of expansion and contraction and to carry a high suspended load 14.

When a plurality of jacking devices 17 are arranged in parallel, the load per jacking device 17 is reduced, and the heavy load 14 can be transported.

In the above embodiment, the pantograph-type jacking device 17 as shown in FIG. 4 was used. For example, other types of screw jacking device, hydraulic jacking device, and rack jacking device such as Other jacking devices can be used as long as the hanging load 14 can be raised and lowered.

For example, FIGS. 6 and 7 are a longitudinal sectional view and a transverse sectional view showing a modified example of the jacking device 17 of this embodiment, however, such a jacking device 26 may be used. It is possible.

The jacking device 26 includes a motor 27 instead of the handle 25 shown in FIG.
Are connected to each other. A battery 29, which is a power source of the electric motor 27, is attached to the outside of the jacking device 26. The electric motor 27 and the battery 29 are electrically connected by a lead wire 30.

Therefore, by rotating the screw shaft 21 by the electric motor 27 instead of rotating the screw shaft 21 manually, the suspended load 14
Can be automated, and the burden on the operator can be reduced.

It should be noted that if the drive of the electric motor 27 can be transmitted to the screw shaft 21, a connecting member other than the coupling 28 can be used.

When there is a step in the transport route, the transfer operation can be easily performed by using two of the transport devices.

FIG. 8 is a side view showing a method of using the transport device of this embodiment. As shown in FIG. 8, two conveying devices of the present invention are arranged before and after the step. In the case of FIG. 8,
There is a suspended load 14 in the lower device.

First, transfer is performed before and after the step 2
Bring the platform carrier closer.

Next, the jacking device 17 of the transport device having the suspended load 14 is operated so that the lower surface of the suspended load 14 is higher than the upper surface of the higher step, so that there is no interference when the suspended load 14 is transferred. The height of the suspended load 14 is adjusted as described above.

Then, the height of the upper surface of each cam follower 8 is adjusted by operating one or both jacking devices 17.

When the above operation is completed, the slider-10
Remove the stopper 12 that fixes the
The slider 10 is moved together with the suspended load 14 to a transport device having a higher step, and then the stopper 12 is attached to the slider 10.

As described above, even when there is a step in the transport route, the transfer of the suspended load 14 between the transport devices can be easily performed, and the number of workers can be reduced.

In FIG. 8, the suspended load 14 is transferred from the lower step to the higher step, but the reverse is also possible.

In the above description, the height of the suspended load 14 and the height of each cam follower 8 are adjusted after the transport device is brought close to the transport device. However, the height of the suspended load 14 and the height of each cam follower 8 are adjusted. It is also possible to bring the transport device close to the vehicle.

Further, in the above description, the suspended load 14 is transferred by using two transport devices, but it is also possible to transfer the suspended load 14 by using a plurality of transport devices.

[0063]

As described above, according to the present invention, the following excellent effects can be obtained.

The transport device of the present invention is provided with a lifting mechanism by itself, so that even a tall device can be transported easily and safely.

Further, even when there is a step in the transport route, it is possible to easily transfer the equipment between the transport devices, and it is also possible to reduce the number of workers.

[Brief description of the drawings]

FIG. 1 is a front view of a transport device according to the present embodiment.

FIG. 2 is a side view of the transportation device shown in FIG. 1;

FIG. 3 is a cross-sectional view of the transport device shown in FIG. 1 along AA.

FIG. 4 is a longitudinal sectional view of a jacking device used in the present embodiment.

FIG. 5 is a diagram in which a plurality of jacking devices are provided in the transport device of the present embodiment.

FIG. 6 is a longitudinal sectional view showing a modified example of the jacking device of the present embodiment.

FIG. 7 is a cross-sectional view illustrating a modified example of the jacking device of the present embodiment.

FIG. 8 is a side view illustrating a method of using the transport device of the present embodiment.

FIG. 9 is a diagram showing a conventional work over a step.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Vertical frame, 2 ... Upper braces, 3 ... Support member, 4 ... Free caster, 5 ... Fixed caster, 8 ... Cam follower, 10 ... Slider, 14 ... ... hanging load, 15 ... hanging bolt, 16
... hanging brackets, 17, 26 ... jacking device, 1
8 top plate, 19 bottom plate, 20 four-link telescopic element, 21 screw shaft, 22 link, 23
... Block, 24 ... Screw cylinder, 27 ... Electric motor,
28 ... Coupling,

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Zenji Eto 5-37-1, Kamata, Ota-ku, Tokyo Toshiba Plant Construction Co., Ltd. F-term (reference) 3D050 AA13 BB08 BB22 DD03 EE15 3F333 AA01 AB03 BA14 BD04 BF03 BG01 DA06

Claims (9)

[Claims] 1. A pair of vertical frames held in parallel at a predetermined interval, an upper braces installed between upper ends of the vertical frames, and a pair of vertical frames. A support member connected to a lower end of the support member via a jacking device; a traveling mechanism attached to a lower end of the support member; a slide mechanism supported by the upper braces to move in a horizontal direction; And a suspension mechanism for retaining the suspended load by being locked. 2. The upper braces bridged between the vertical frames, the upper braces play on the cylindrical portions provided on the upper braces on the columnar portions provided at the upper end of the vertical frames. 2. The transport device according to claim 1, wherein the transport device is fitted and connected to the vertical frame. 3. Each of the vertical frames is connected to the supporting member by loosely fitting a cylindrical portion provided at a lower end thereof to a columnar portion provided at an upper end of the supporting member. The transport device according to claim 1 or 2, wherein 4. The apparatus according to claim 1, wherein the jacking device is a pantograph-type jacking device.
The transport device according to any one of claims 3 to 3. 5. The transport device according to claim 1, wherein the jacking device comprises a plurality of pantograph-type unit jacks arranged in parallel. 6. A plurality of pantograph formulas 4 between a top plate and a bottom plate.
The link expansion and contraction elements are arranged in line so that the nodes are substantially aligned with each other, and screw cylinders having mutually opposite threads are alternately and coaxially fixed to the nodes of each of the four link expansion and contraction elements. A screw drive is provided with a jacking device capable of screwing a common drive shaft provided with a thread groove corresponding to each screw cylinder and moving the top plate up and down with respect to the bottom plate by rotation of the drive shaft. The transport device according to any one of claims 1 to 5, characterized in that: 7. A plurality of pantograph formulas 4 between a top plate and a bottom plate
The link expansion and contraction elements are arranged in line so that the nodes are substantially aligned with each other, and screw cylinders having mutually opposite threads are alternately and coaxially fixed to the nodes of each of the four link expansion and contraction elements. A common drive shaft provided with a corresponding thread groove is screwed into each screw cylinder, and the top plate can be moved up and down with respect to the bottom plate by rotating the drive shaft. Jacking device. 8. The jacking device according to claim 7, wherein the drive shaft is connected to a motor via a connecting member, and the drive shaft is rotated by driving the motor. 9. A method according to claim 1, wherein a suspended load suspended by at least one of the plurality of transporting apparatuses is placed at a position having a height difference. In the method of transferring to the transporting device of (1), a step of bringing each transporting device to be transferred closer to each other; and operating one or both of the jacking devices of each of the transporting devices to increase the height of the slide mechanism of each other. A method of using a transport device, comprising: a step of making the slide mechanism horizontal, and a step of transferring the suspended load on one side to the other transport device by moving the slide mechanism in the horizontal direction.