JPH08245175A - Crane - Google Patents

Abstract

PURPOSE: To make a crane usable for building maintenance by making a mast used in a climbing crane in time of building construction usable as a jib of a jib crane and, after the building is completed, separating this mast into storage, in this crane in use on the construction of a superhigh rise or the like. CONSTITUTION: A plane frame 1 is supported on a building floor beam 4 by support legs 7 installed in the four corners, inserting a mast 5 into the square insertional hole. Likewise a traveling frame 2, where this mast 5 is insertable through, is set up upward the frame 1, and a turning frame 3 is attached on this traveling frame 2. Then a guide mast 28 is clamped tight to the mast 5 and, after pulling up this frame 2 with a lifting driver 28, such operations as pulling up the frame 1 together with the mast 5 extended successively are repeated and after being assembled up to the uppermost floor, a lower end of the mast 5 is pivotally supported on a supporting part 25, using it as a jib, and a traveling carriage is attached to two supporting legs 15, and thus it is utilizable as a traveling type jib crane at the uppermost floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane used in the construction of skyscrapers and the like.

[0002]

2. Description of the Related Art When constructing a skyscraper, a climbing crane that vertically conveys materials is installed, disassembled jib crane parts are conveyed to the top floor of the building steel frame to assemble a traveling jib crane, and construction is performed using this jib crane. Materials are hoisted and construction work is carried out upwards to construct a skyscraper.

[0003]

Conventionally, the jib crane cannot be transported to the uppermost floor of the building steel frame unless it is disassembled, and the parts of the jib crane are transported to the uppermost floor of the building steel frame, which requires a separate climbing crane. .

For this reason, in the conventional construction of a skyscraper, a climbing crane is required in addition to the jib crane, and the number of parts for the crane increases, and there has been a problem that it takes time and labor to carry, assemble and dismantle the crane.

The present invention solves such a problem and allows the parts of the jib crane and the climbing crane to be shared, so that the number of parts for the crane is reduced, and the time and labor required for carrying, assembling and dismantling the crane parts are reduced. The purpose is to provide a crane that can be reduced.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides a mast formed by a replenishment, a flat mount which can pass vertically through a floor beam of a building and which allows the mast to be inserted upward, and the flat mount. A flat pedestal support leg that is attached and whose tip can appear and disappear on the floor beam by horizontal rotation;
A traveling frame which is arranged above the flat frame and which can pass vertically between the floor beams and through which the mast can be inserted, and a tip attached to the floor beam by horizontal rotation attached to the traveling frame. A traveling frame supporting leg, a swing frame mounted on the traveling frame, capable of passing vertically between the floor beams, and capable of passing the mast upward, and tightening release for the mast inserted in the swing frame. A possible elevating frame, an elevating drive device provided between the elevating frame and the revolving frame, vertically guiding a mast assembled on the revolving frame and inserted into the revolving frame and tightening the mast. And a traveling frame support leg. A detachable traveling carriage and an outrigger are provided at the tip, and a hoisting device and a mast support portion that pivotally supports the lower end of the mast are attached to the revolving frame, and the lower end is pivotally supported by the hoisting device and wound on the hoisting device. Loading wire hanging through the upper end of the mast, and an undulating wire having one end coupled to the upper end of the lifting drive device and the other end coupled to the upper end of the mast pivotally supported at the lower end by the mast support portion. And can be provided.

[0007]

[Function] While the mast is being added, the mast is inserted into the flat frame, the traveling frame, and the revolving frame, and is pulled up by the lifting drive device, then the guide mast is tightened to the mast, and the traveling frame is moved together with the revolving frame by the lifting drive device. After pulling up the mast, the flat mount is lifted together with the mast by the lifting drive device, placed on the floor beam of the upper building, and again the mast, the flat mount, the traveling frame, and the swivel frame are pulled up to the top of the roof. After reaching the floor, the lower end of the mast is pivotally supported on the mast support part to form a jib, and the traveling carriage is attached to the tip of the traveling frame support leg to form a traveling jib crane, which uses cargo handling wire and undulating wire. You can work on a traveling jib crane on the top floor.

[0008]

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

The main construction of the crane according to the present invention is composed of a plane mount 1 shown in FIGS. 2 to 4, a traveling frame 2 shown in FIGS. 5 to 7, a swing frame 3 shown in FIG. 9, and the like.

Details of these components will be described below.

FIG. 2 is a plan view of the flat mount 1, and FIG. 3 is a front view of the flat mount 1. The flat mount 1 has a substantially square plan shape, and the floor beam 4, which is assembled from the steel frame of the building to be constructed. It is made large enough to pass vertically between the four.

A mast insertion hole 6 for inserting a mast 5 to be described later is provided inside the square of the flat mount 1, and the base ends of the flat mount support legs 7 are vertically arranged near the four corners of the square. The flat pedestal support leg 7 is pivotally attached by a pin 8 so that the tip end side can be horizontally rotated about the pin 8.

In order to horizontally rotate the flat mount support leg 7, a link 10 having a gear 9 rotated by a motor (not shown) at the base end is connected to the tip of the flat mount support leg 7 as shown in FIG. Has been done.

When the flat pedestal support leg 7 extends in a parallel state by rotation as shown by the solid line in FIG. 2, the tip of the flat pedestal support leg 7 comes to be located on the floor beam 4. At this time, the tip of the flat pedestal support leg 7 is attached to the floor beam 4
A short column 11 is attached to the lower side of the tip of the flat pedestal support leg 7 for mounting on the top.

When the flat pedestal support leg 7 is opened and the effective length in the left-right direction is shortened by the rotation as shown by the two-dot chain line in FIG. 2, the tip of the flat pedestal support leg 7 reaches the floor beam 4. It becomes possible to pass vertically between the floor beams 4 and 4 together with the flat mount 1.

The tip of the flat pedestal supporting leg 7 is the floor beam 4
In the state of being placed on top, the flat pedestal support legs 7 are fixed in a parallel state by the fixing rods 12 as shown in FIG. 4, so that the open state as shown by the chain double-dashed line can be prevented.

The flat frame 1 is designed so that the bolt 13 can be inserted therein. When the blank 13 is inserted, the mast 5 inserted into the mast insertion hole 6 and the flat frame 1 are fixed, and the blank 13 is pulled out. Then, the mast 5 enters a state in which it can pass through the mast insertion hole 6 in the vertical direction.

FIG. 5 is a plan view of the traveling frame 2, and FIG. 6 is a front view of the traveling frame 2. The traveling frame 2 has a substantially square plan shape, and the floor beam 4, which is assembled from the steel frame of the building to be constructed. It is made large enough to pass vertically between the four.

Inside the square of the traveling frame 2, there are provided mast insertion holes 14 through which a mast 5 to be described later is inserted, and traveling frame support legs 15 are attached in radial directions at the four corners of the square, respectively. ing. The traveling frame support leg 15 is configured such that a vertical pin 16 located in the middle of the traveling frame support leg 15 can be horizontally rotated and bent at the tip end side.

A link 19 having a gear 18 rotated by a motor 17 at the base end is connected to the tip of the traveling frame support leg 15 in order to horizontally rotate the tip side from the pin 16 of the traveling frame support leg 15. ing.

When the tip end side of the traveling frame support leg 15 extends in the radial direction by the rotation as shown by the solid line in FIG.
Will be located on top. This running frame support leg 15
At the tip of the vehicle, there are wheels 20 and an outrigger 2.
1 and 1 are detachably attached.
The traveling carriage 20 rotates horizontally to move the traveling frame support legs 1
The horizontal orientation with respect to 5 can be adjusted.

When the tip end side of the traveling frame support leg 15 is bent by turning so as to be parallel and the effective length in the left-right direction is shortened, as shown by the two-dot chain line in FIG. Does not reach the floor beam 4 and can pass vertically between the floor beams 4 and 4 together with the traveling frame 2.

When the tip of the traveling frame support leg 15 is positioned on the floor beam 4, the tip side of the traveling frame support leg 15 is fixed in the radial direction by the fixing rod 22 as shown in FIG. The refraction state as shown by the chain line can be prevented.

A runner 23 is inserted into the traveling frame 2, and when the runner 23 is inserted,
The mast 5 inserted through the mast insertion hole 14 and the traveling frame 2 are fixed, and when the bolt 23 is removed, the mast 5 is allowed to pass through the mast insertion hole 14 in the vertical direction.

The above-mentioned traveling frame 2 is arranged above the plane mount 1, as shown in FIG. Then, as shown in FIG. 9, a revolving frame 3 is mounted on the traveling frame 2 arranged above the flat frame 1.

The swivel frame 3 is adapted to allow the mast 5 to pass upward at the center of the portion attached to the traveling frame 2, and on the swivel frame 3,
A guy support 24, a mast support portion 25, and a hydraulic cylinder attachment portion 26 are attached, and a hoisting device 27 can be attached as shown in FIG.

The guy support 24 is composed of a beam and is attached in a triangular shape on the swivel frame 3 so as to be positioned on the front side and the other side of the mast 5 passing through the swivel frame 3, as shown in FIG. It is combined with a guide mast 28 composed of a beam to form a turret shape that allows the mast 5 to pass upward.

The mast support portion 25 serves to pivotally support the lower end of the mast 5 which has passed through the swivel frame 3 as described later, and the hydraulic cylinder mounting portion 26 has a hydraulic pressure as shown in FIG. A lower end of a cylinder 29 (elevation drive device) is attached, and an upper and lower frame 30 surrounding the mast 5 inserted into the swivel frame 3 is coupled to the upper end of the hydraulic cylinder 29.

The lifting frame 30 shown in FIG. 1 is provided with a tightening tool 31 which can be tightened and released, and the tightening tool 31 is tightened on the mast 5 to integrally connect the lifting frame 30 to the mast 5. The tightening tool 31 is opened with respect to the mast 5 so that the elevating frame 30 can be moved up and down along the mast 5. Although the hydraulic cylinder 29 is used as the lifting drive device in the illustrated embodiment, a jack or a winch may be used as the lifting drive device.

On the upper part of the guide mast 28, a tightening tool 32 that can be tightened and released is provided, and the tightening tool 3 is attached to the mast 5.
A state in which the mast 5 is integrally coupled to the guide mast 28 to prevent the mast 5 from moving up and down or the tightening tool 32 is opened to the mast 5 so that the mast 5 can freely move up and down with respect to the guide mast 28. You can do it.

Next, the operation of the above-mentioned crane will be described.

First, as shown in FIG. 8, a plane frame 1 and a traveling frame 2 are arranged above the floor beam 4 in the lower layer of the building, and the plane frame supporting legs 7 of the plane frame 1 are shown by solid lines in FIG. As shown by the solid line in FIG. 5, the traveling frame support legs 15 of the traveling frame 2 are extended in the radial direction.
The flat mount 1 and the traveling frame 2 are installed on the floor beam 4 in the lower layer via the 5.

Next, as shown in FIG. 9, the swivel frame 3 is mounted and fixed on the traveling frame 2, the guy support 24 is mounted on the swivel frame 3, and as shown in FIG. 10, the swivel frame 3, the traveling frame 2, About 3 masts 5 which are shortly separated are inserted from above the flat mount 1, and the masts 5 which are shortly separated are successively added and combined to form an integral straight mast 5, and the stand 13 is mounted on the flat mount 1. The mast 5 and the flat mount 1 are fixed by inserting.

Next, as shown in FIG. 11, a hoisting device 27 is mounted on the revolving frame 3, and a lower end of a hydraulic cylinder 29 (elevating drive device) is mounted on the hydraulic cylinder mounting portion 26 and fitted around the mast 5. The elevating frame 30 is connected to the upper end of the hydraulic cylinder 29, and the guide mast 28 is fixed to the guy support 24 in combination.

Next, the tightening tool 31 of the elevating frame 30 is tightened to integrally connect the elevating frame 30 to the mast 5, and the tightening tool 32 of the guide mast 28 is opened so that the mast 5 is attached to the guide mast 28. In a state in which the hydraulic cylinder 29 can be freely moved up and down, the bolt 13 is pulled out from the flat base 1, and the hydraulic cylinder 29 is extended.

When the hydraulic cylinder 29 is extended, the elevating frame 30 which is connected to the upper end of the hydraulic cylinder 29 and is integrally connected to the mast 5 rises, and as a result, as shown in FIG. The mast 5 which is inserted through the swivel frame 3, the traveling frame 2, and the flat mount 1 is raised. The mast 5 for the next replenishment is integrally connected to the lower end of the raised mast 5.

When the mast 5 is repeatedly raised and the masts 5 are replenished in this manner, the mast 5 becomes longer due to the replenishment and moves upward as shown in FIG.

When the mast 5 is replenished to a predetermined length,
After extending the hydraulic cylinder 29 to raise the elevating frame 30, the tightening tool 31 of the elevating frame 30 is tightened to integrally connect the elevating frame 30 to the mast 5, and the tightening tool 32 of the guide mast 28 is opened. Then guide mast 2
8 is set so that it can freely move up and down with respect to the mast 5, and the tip ends of the traveling frame support legs 15 of the traveling frame 2 are refracted so that they are parallel to each other as indicated by the chain double-dashed line in FIG. 4 and the hydraulic cylinder 29 is reduced by inserting the bolt 13 into the flat mount 1.

By this operation, the upper end of the hydraulic cylinder 29 is integrally connected to the elevating frame 30 via the tightening tool 31 of the elevating frame 30.
The lower end of 9 is the turning frame 3 and the traveling frame 2 is the mast 5
Will be pulled along. At this time, the weights of the revolving frame 3 and the traveling frame 2 are loaded on the lower floor beam 4 via the hydraulic cylinder 29, the elevating frame 30, the mast 5, the boot 13, and the flat mount 1.

When the revolving frame 3 and the traveling frame 2 are pulled up along the mast 5 and the hydraulic cylinder 29 reaches the contraction limit, the tightening tool 32 of the guide mast 28 is tightened to integrally connect the mast 5 and the guide mast 28. As well as combine
When the tightening tool 31 of the elevating frame 30 is opened to bring the elevating frame 30 up and down along the mast 5, and the hydraulic cylinder 29 is extended, only the elevating frame 30 ascends along the mast 5.

When the hydraulic cylinder 29 reaches the extension limit,
The tightening tool 31 of the elevating frame 30 is tightened again to integrally connect the elevating frame 30 to the mast 5, and the tightening tool 32 of the guide mast 28 is opened so that the mast 5 is freely moved up and down with respect to the guide mast 28. When the hydraulic cylinder 29 is contracted in the obtained state, the swing frame 3 and the traveling frame 2 are pulled up along the mast 5.

By repeating this operation, the traveling frame 2 is lifted up to the floor beam 4 in the upper layer as shown in FIG.

Here, the traveling frame support legs 15 of the traveling frame 2 are extended in the radial direction at the tip end side as shown by the solid line in FIG. 5 so that the outriggers 21 are located on the floor beam 4 of the upper layer and the traveling is carried out. Frame 2, swivel frame 3
Are supported by the floor beam 4 of the upper layer.

Next, the tightening tool 31 of the lifting frame 30 is opened so that the lifting frame 30 can move up and down along the mast 5, and the hydraulic cylinder 29 is contracted to lift the lifting frame 3.
After lowering only 0, the tightening tool 31 of the lifting frame 30 is tightened to integrally connect the lifting frame 30 and the mast 5, and the tightening tool 32 of the guide mast 28 is opened to release the mast 5.
Is in a state where it can freely move up and down with respect to the guide mast 28, and the flat frame support legs 7 of the flat frame 1 can be opened as shown by the chain double-dashed line in FIG. 2 to pass vertically between the floor beams 4 and 4. State.

When the hydraulic cylinder 29 is extended in this state, the upper end of the hydraulic cylinder 29 is integrally connected to the mast 5 via the tightening tool 31 of the elevating frame 30, so that the traveling frame 2 and the turning frame 3 are located above. Since it is supported by the floor beam 4 of the layer, the mast 5 will rise.

Below the mast 5, the flat mount 1 into which the bolt 13 is inserted is fixed, so that as the mast 5 rises, the flat mount 1 separates from the lower floor beam 4 and rises together with the mast 5. It will be. At this time, the weights of the flat mount 1 and the mast 5 are loaded on the floor beam 4 of the upper layer via the hydraulic cylinder 29, the swing frame 3, and the traveling frame 2.

When the hydraulic cylinder 29 reaches the extension limit by raising the mast 5 and the flat mount 1, the tightening tool 32 of the guide mast 28 is tightened to integrally connect the mast 5 and the guide mast 28 and to move up and down. Fastener 3 for frame 30
When 1 is opened so that the elevating frame 30 can move up and down along the mast 5, and the hydraulic cylinder 29 is contracted, only the elevating frame 30 descends along the mast 5.

When the hydraulic cylinder 29 reaches the reduction limit,
When the tightening tool 31 of the elevating frame 30 is tightened again to integrally connect the elevating frame 30 and the mast 5, and the tightening tool 32 of the guide mast 28 is released to extend the hydraulic cylinder 29, the flat mount 1 together with the mast 5 is released. Rises.

By repeating this operation, as shown in FIG. 15, the flat mount 1 rises up to below the traveling frame 2 supported by the floor beam 4 of the upper layer.
By extending the tips of the flat pedestal support legs 7 of the flat pedestal 1 in a parallel state as shown by the solid line in FIG. 2, the flat pedestal 1 is also supported by the floor beam 4 of the upper layer below the traveling frame 2. Become.

In the state shown in FIG. 15, the tightening tool 31 of the elevating frame 30 is opened so that the elevating frame 30 can move up and down along the mast 5, and the hydraulic cylinder 29 is extended to extend only the elevating frame 30 to the mast 5. After ascending, the tightening tool 31 of the elevating frame 30 is tightened to integrally connect the elevating frame 30 to the mast 5, and the tightening tool 32 of the guide mast 28 is opened to allow the guide mast 28 to move to the mast 5. With respect to the floor beams 4 and 4, the tip ends of the traveling frame support legs 15 of the traveling frame 2 are bent so as to be parallel to each other as indicated by the two-dot chain line in FIG. In a state in which the hydraulic cylinder 29 can pass through, the hollow 13 is inserted into the flat mount 1 to reduce the hydraulic cylinder 29.

By this operation, the upper end of the hydraulic cylinder 29 is integrally connected to the elevating frame 30 via the tightening tool 31 of the elevating frame 30.
The lower end of 9 is the turning frame 3 and the traveling frame 2 is the mast 5
Will be pulled along. The weights of the revolving frame 3 and the traveling frame 2 at this time are loaded on the floor beam 4 of the upper layer via the hydraulic cylinder 29, the elevating frame 30, the mast 5, the boot 13, and the flat mount 1.

When the swing frame 3 and the traveling frame 2 are lifted from the floor beam 4 of the upper layer along the mast 5 and the hydraulic cylinder 29 reaches the contraction limit, the guide mast 28 is moved.
The tightening device 32 is tightened to integrally connect the mast 5 and the guide mast 28, and the tightening device 31 of the elevating frame 30 is opened so that the elevating frame 30 can move up and down along the mast 5. When the cylinder 29 is extended, only the lifting frame 30 moves up along the mast 5.

When the hydraulic cylinder 29 reaches the extension limit,
The tightening tool 31 of the elevating frame 30 is tightened again to integrally connect the elevating frame 30 to the mast 5, and the tightening tool 32 of the guide mast 28 is opened so that the mast 5 is freely moved up and down with respect to the guide mast 28. When the hydraulic cylinder 29 is contracted in the obtained state, the swing frame 3 and the traveling frame 2 are pulled up from the floor beam 4 of the upper layer along the mast 5.

By repeating this operation, the traveling frame 2 is lifted up to the floor beam 4 on the roof as shown in FIG.

Here, the traveling frame support legs 15 of the traveling frame 2 are extended in the radial direction at the tip end side as shown by the solid line in FIG. 5 so that the outriggers 21 are positioned on the floor beam 4 on the roof, and the traveling frame 2 The swing frame 3 is supported by the floor beam 4 on the roof.

Next, the tightening tool 31 of the lifting frame 30 is opened so that the lifting frame 30 can move up and down along the mast 5, and the hydraulic cylinder 29 is contracted to lift the lifting frame 3.
After lowering only 0, the tightening tool 31 of the lifting frame 30 is tightened to integrally connect the lifting frame 30 and the mast 5, and the tightening tool 32 of the guide mast 28 is opened to release the mast 5.
Is allowed to freely move up and down with respect to the guide mast 28, and the bolt 13 is pulled out from the flat mount 1 so that the mast 5 can pass through the flat mount 1 in the vertical direction.

When the hydraulic cylinder 29 is extended in this state, the upper end of the hydraulic cylinder 29 is integrally connected to the mast 5 via the tightening tool 31 of the elevating frame 30, and the traveling frame 2 and the swing frame 3 are on the roof. Floor beam 4
The mast 5 rises because it is supported by, and the flat mount 1 remains placed on the floor beam 4 of the upper layer.

When the hydraulic cylinder 29 reaches the extension limit,
A state in which the tightening tool 32 of the guide mast 28 is tightened to integrally connect the mast 5 and the guide mast 28, and the tightening tool 31 of the elevating frame 30 is opened to allow the elevating frame 30 to move up and down along the mast 5. And hydraulic cylinder 29
Is reduced, only the elevating frame 30 descends along the mast 5.

When the hydraulic cylinder 29 reaches the reduction limit,
When the tightening tool 31 of the elevating frame 30 is tightened again to integrally connect the elevating frame 30 and the mast 5, and the tightening tool 32 of the guide mast 28 is released to extend the hydraulic cylinder 29, the mast 5 further rises. .

By repeating this operation, the lower end of the mast 5 rises up to the turning frame 3 supported by the floor beam 4 on the roof as shown in FIG.
Mast support 2 mounted on swivel frame 3
5, the lower end of the mast 5 is pivotally supported.

Next, the outrigger 21 (see FIGS. 8 and 16) is removed from the tip of the traveling frame support leg 15 so that the traveling carriage 20 of the traveling frame support leg 15 is supported by the floor beam 4 on the roof. , Guide mast 28
And the lifting frame 30 is removed. Then, as shown in FIG. 18, the cargo handling wire 33 having one end wound around the hoisting device 27 is hung down via the upper end of the mast 5, and one end of the undulating wire 34 is coupled to the upper end of the hydraulic cylinder 29 for undulating. The wire 34 is connected to the upper end of the mast 5 via the upper end of the guy support 24.

As a result, as shown in FIG. 18, the jib crane is assembled on the roof floor beam 4, the traveling frame 2 is moved along the roof floor beam 4, and the undulating wire 34 is expanded and contracted by the hydraulic cylinder 29. The elevation angle of the mast 5 can be changed, and the hoisting device 27 can wind up and wind down the cargo handling wire 33 to perform cargo handling.

[0063]

According to the invention of claim 1, the mast used for the climbing crane at the time of building the building can be used for the jib of the jib crane, and the mast must be separated and stored even after the building is completed. For example, it can be stored in a narrow space and can be immediately used as a climbing crane for building maintenance.

According to the second aspect of the invention, the jib crane can be assembled on the rooftop of the building by using the mast of the climbing crane and the lifting drive device, and the time and labor required for transporting, assembling and disassembling with reduced parts are reduced. There is an effect that can be done.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a plan view of a flat mount.

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a plan view showing the operation of the flat pedestal support legs.

FIG. 5 is a plan view of a traveling frame.

FIG. 6 is a front view of FIG. 5;

FIG. 7 is a plan view showing the operation of the traveling frame support legs.

FIG. 8 is a front view showing a state in which a traveling frame is arranged above a plane mount.

FIG. 9 is a front view showing a state in which a turning frame is mounted on a traveling frame.

FIG. 10 is a front view of the state in which the mast is inserted.

FIG. 11 is a front view showing a state where the device of the present invention is placed on the floor beam of a building.

FIG. 12 is a front view showing a state where a mast is added.

FIG. 13 is a front view showing a state in which a mast that has been replenished is raised.

FIG. 14 is a front view showing a state where a traveling frame is raised.

FIG. 15 is a front view showing a state in which the flat mount is raised.

FIG. 16 is a front view showing a state where the traveling frame is further raised.

FIG. 17 is a front view of the state where the mast is further raised.

FIG. 18 is a front view in use as a jib crane.

[Explanation of symbols]

 1 flat frame 2 traveling frame 3 revolving frame 5 mast 7 plane frame supporting leg 15 traveling frame supporting leg 21 outrigger 25 mast supporting portion 27 hoisting device 28 guide mast 29 hydraulic cylinder (elevating drive device) 30 lifting frame 33 loading wire 34 Undulating wire

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junichi Ueda 6-4 Akashi-cho, Chuo-ku, Tokyo Ishikawajima Transport Machinery Co., Ltd.

Claims (2)

[Claims] 1. A mast formed by adding a joint,
A flat mount capable of passing vertically between the floor beams of the building and capable of inserting the mast upward; and a flat mount supporting leg that is attached to the flat mount and whose tip can project and retract on the floor beam by horizontal rotation. A traveling frame which is disposed above the flat mount and which can pass vertically through the floor beams and which allows the mast to be inserted upward; and a tip mounted on the traveling frame so that the tip is on the floor beam by horizontal rotation. A traveling frame supporting leg that can appear and disappear, a swing frame that is mounted on the traveling frame and that can pass vertically between the floor beams, and that allows the mast to be inserted upward, and tightens on the mast that is inserted in the swing frame. An openable lift frame, a lift drive device provided between the lift frame and the swivel frame, and an assembly mounted on the swivel frame. Crane, characterized in that it and a clamping openable guide mast to mast with guiding the insertion mast to the rotating frame in the vertical direction. 2. A traveling carriage and an outrigger that can be attached to and detached from a tip of a traveling frame supporting leg, a hoisting device mounted on the revolving frame, and a lower end of a mast mounted on the revolving frame and passing upward through the revolving frame. A mast supporting part for pivotally supporting the hoisting device, a cargo handling wire that is wound around the hoisting device and hangs down via the upper end of the mast pivotally supported at the lower end by the mast supporting part, and one end of the wire is connected to the upper end of the lifting drive device. The crane according to claim 1, further comprising an undulating wire, the other end of which is connected to the upper end of the mast whose lower end is pivotally supported by the mast support portion.