JPS5912095A - Climbing crane - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a climbing crane.

Conventionally, there is a method of increasing the self-supporting height of a climbing crane by using a combination of an inner mast and an outer mast.As shown in Fig. (3) Lift the inner mast (I17a = radius 0? 71 distance, that is, place it at the center of the existing inner mast (1) on the pedestal (4),
5) is placed on the existing inner mast (1) from the top and assembled, and then the revolving body (2) is raised again using the lifting device (6) installed on the inner mast +11. The next inner mast (1, 1'f) is taken in, the assembly material is then further raised by the revolving body (2), the above steps are repeated as appropriate to complete the inner mast (1) to a predetermined height, and then the second As shown in the figure, the outer mast (7) is sequentially assembled to the outer periphery of the inner mast (1) from below to a predetermined height, and then the inner mast stay (8) is attached to the outer mast ( 7) to the required height position, the inner mast (Il'f) was supported, the inner mast (1) was taken in again, assembled, and raised to secure the required height. .

However, in such a conventional method, it is necessary to secure a working radius o m (or around Ont) which is unnecessary in normal work to take in (1) internal mass) (11), so the jib (3) The hoisting fulcrum needs to be located quite far back from the turning center, so the length of the jib (3) becomes longer and the rear turning radius becomes thicker.

(11) Since the inner mast (1) passes through the inside of the revolving body (2), the revolving frame (5) and the revolving ring (9) are thick.

(iii) Workability is poor because it is assembled in a narrow space.

(iv) Outside mass) +71 'a' Since the assembly is carried out from the bottom, work must be done at heights, which poses problems in terms of workability and safety, and requires skilled workers to assemble.

(v) There is a "double" part between the outer mast (7) and the inner mast (1), which is uneconomical.

It had the following problems.

In view of these circumstances, the present invention provides a lifting device between the upper end of the outer mast and the inner mast, and takes in and assembles the inner and outer masts near the ground, thereby increasing workability and safety. This invention was developed to provide a flying crane that can reduce the size, weight, and cost of the swivel frame, swivel ring, etc.

Hereinafter, a detailed description of the present invention will be given with reference to the drawings.

As shown in Figure 4, the crane cage is installed.
The foundation 00), the anchor mass for the inner mast) (10),
The anchor mass for the inner mast l-01) Y is surrounded by 02 anchor masts for the outer mast, buried so that the upper ends of each protrude a required amount into the ground, and the anchor mass for the outer mast 1-QLI- The first stage outer mast (1) is removably attached to the upper part of the outer mast (1), and the inner mast (1) supporting the revolving structure (2) is attached to the upper part of the outer mast (1). Provide a lifting device Q31Y between the upper end of the outer mast (7) and the upper end of the outer mast (7).

This elevating device Q31 is located outside (as shown in Fig. 5)
(Reinforcement material (7
b) The guide mass I-Q41 attached to the upper end, the support frame 09 fixed to the guide mass Q41, the elevating frame θe arranged above the support frame 09, and the elevating sill 0 installed between the frame Q51 ufD. ? ) and the mast inside the bolt Q81'%r (1) installed at the rond end.
A lock 7 cylinder α force is provided on each frame Q5116) so that it can be inserted into and removed from the lock hole ■ drilled in the outer wall of the cylinder, and a lock 7 cylinder α force is installed on each frame θn06) to prevent the inner mast (1) from rolling. It has a configuration consisting of an eccentric roller (211).

In addition, guide rails are laid on both sides of the outer mast (anchor mast 01 for the inner mast from the side of the force) on the foundation (1) in the outer mast (7) of the first stage. (Inner and outer squares) (11 (71) and the later-described telescoping platform (2Ii1) will be able to run on the guide rail (inner and outer squares). It has a U-shape, and as shown in Figure 6, it has an additional inner square I/(
1) Attachment for transporting the equipment) (241') can be attached and removed inside it, and as shown in Figure 7, an additional external mast (
Attachments C151'y are configured so that they can be attached and detached from the four outer corners of the attachments C151'y when being transported.

Furthermore, after assembling the outer mast (7) and inner mast (1) (details will be described later), expansion and contraction is performed to transfer the load of the inner mast (1) and rotating structure (2) to the outer mast (7) side. A stand CD is provided. This telescopic frame (2e is the lowest inner mass as shown in FIGS. 8 to 10) (the outer mast (2M and the upper part e7) which can be connected to the lower end of 11 by the operation of the cylinder 09) 7), the legs extend and contract in the radial direction toward the main pillar (7α) at the four corners of The main pillar of (
7a), and a retaining metal fitting Gυ for fixing to 7a).

In FIGS. 4 to 10, the same reference numerals as in FIGS. 1 to 3 indicate the same parts.

Next, the lifting and lowering process of the crane of the present invention will be explained in Figs.
This will be explained in detail with reference to FIG.

First, as shown in Fig. 6, on the trolley (c) with the inner mast actuator (041) attached to the inside part,
After loading the additional inner mast (1) by operating the revolving structure (2) and confirming whether the inner mast (1) can be inserted into the first stage outer mast (7), manual power or a winch etc. Push the bogie a31'v below the existing internal mast (1) (see Fig. 11 above). In addition, the reinforcing material (7b) of the outer mast (7) where it intersects with the additional inner mast (1) has been removed in advance (.

Next, the existing internal mast (Iny) that supports the revolving structure (2)
It descends by operating the sieve device 03), and an additional inner cell 1-
A very small gap is created between one end of C11 and the lower end of the existing internal mast (1), and the two are temporarily fixed together with a bolt or the like to maintain the very small gap. After temporary fixing, inner mass l-(11
'Y Raise it slightly and pull out the trolley (231), then
(inner box) (jl'Y) Go down and attach the temporary fixing part to the bottom so that there is no gap (see Fig. 12).

By repeating the above operations, the inner mast (1) is moved one by one to secure a predetermined height (normally, the inner mast (1) is assembled to its self-sustaining limit). Release the engagement between the lower end of the first stage outer mast (force) and the upper end of the outer mast anchor mast 02 (see Fig. 16).

After that, as the center of the inner mass ill"aj (support structure), the first stage outer mass) is lifted by operating the lifting device 0'!I.
(Raise 71Y to the specified position. Next, as shown in Figure 7, remove the inner mast attachment (24) Y and place the additional outer mast on the trolley (C) to which the outer mast attachment (C) has been attached. Mass) (71'a? is loaded and carried below the outer mast (7) located on the upper stage of the trolley C!31Y.The additional outer mast (7) carried in is loaded on the inner mass l-
(Fix it to the upper outer mast (7) in the same way as in case 11 and attach the reinforcing material (7b) w in the carry-in direction (
(See Figure 14).

Further, repeat the above operation to assemble the outer mast (71'aj successively to the specified height, and then assemble the lower end of the lowest outer mast (7) and the outer mast anchor mass) to the upper end of 07J. The outer mast (7) is completed by engaging and fixing the outer mast (7) (see Fig. 15).

After completing the outer mast (7), release the engagement between the lower end of the lowermost inner mast (11 and the upper end of the inner mast anchor mass l-01) and slightly raise the inner mast (inner mast) +11.
), the telescopic pedestal c2B'v with legs (2 marks retracted) is carried into the lower part of the pedestal (pedestal part C1 of 2e).
7+ and the lower end of the inner mast (1) are connected with bolts or the like (see Fig. 16 above).

Then, pull out the trolley (c), inner mass HIIY outer mass)
(It is raised to a predetermined height position as a 71Y support structure.

At this time, the pedestal (A) has legs (towards) as shown in Figure 18.
does not touch the outer mast (7).

At such a raised position, extend the leg (end) of the eccentric roller (2Df (with the close contact roller), set the bolt 0 (end), and furthermore, extend the leg (end) of the mount C16, which has been contracted by the operation of the cylinder. By positioning the leg (2) at the midway positioning part (end) and fixing it to the upper end of the main column (7a) of the outer mast (7) with the tip 7 holding fitting C311 of the leg (2),
The load from the inner mast +- (11 side is transmitted to the outer mast (force side) via the telescopic frame @ (see Fig. 17).

In addition, if a high self-supporting height is not required, that is, if only the inner mast (1) is sufficient, as an application example of the present invention, the crane can be erected by installing the telescopic frame directly on the foundation fII. .

As described above, according to the present invention, (1) The load on the inner mast side can be received on the outer mast side, so the elevating devices such as the guide mast, rollers, and bolts only bear the load during elevating and lowering. (The moment and load during normal work are overwhelmingly larger than the load during lifting and lowering), and therefore the part can be made smaller and lighter.

(II) Since the load flow is simple due to item 1 (1), there is less worry about "one play" occurring between the inner and outer masts, the deflection of the entire crane can be reduced, and there is no need to worry about maintenance. Safety can be improved without any problems.

(III) It is no longer necessary to secure a working radius of □m (or around 0m) and the fulcrum of the jib can be moved forward compared to before, so the jib can be shortened and economical, and the rear turning radius can be reduced. Since it can be made small, it is advantageous for working in narrow spaces.

Since there is no need to pass through the inner mast strut, the rotating frame or the rotating ring, the strength of this part can be increased, the size can be reduced, and
Weight reduction can be achieved.

(■) Easier work (especially block formation of the outer mast) as the installation and assembly of the inner and outer masts can be carried out near the ground.
Since there is no need to work at heights, safety is high (and labor savings for workers).

(V [Because the work is done in low places, no special skilled workers are required.

■ Lifting device It is efficient because it can be used to raise and lower the inner mast and the outer mast.

(4) There is less "double" between the inner mast and the outer mast, so
The number of inner masts used can be reduced.

(lX) Since the lifting device is located near the bottom of the inner mast during work, wind loads and seismic loads applied to the entire crane can be reduced.

(X) As a storm countermeasure, the inner mast and rotating body can be lowered in a short time after a forecast is issued without removing the inner mast strut, which can alleviate the effects of the storm and make the aircraft lighter. I can cry.

It can produce excellent effects such as

[Brief Description of the Drawings] Figures 1 to 6 are explanatory diagrams showing the elevating system of a conventional climbing crane. Figure 5 is a view taken from the ■-■ arrow in Figure 4, Figure 6 is a plan view of the trolley when transporting the inner mast, Figure 7 is a plan view of the trolley when transporting the outer mast, and Figure 8 is the present invention. 9 is a side view of the main parts of the climbing crane, FIG. 9 is a view taken along the line IX-IX in FIG. 8, FIG. FIG. 18 is an explanatory view showing the lifting and lowering process of the climbing crane, and FIG. 18 is a plan view of the telescoping frame during lifting and lowering within the outer mast. (1)...Inner mast, (2)...Swivel body, (Ka...
・Outer mast, (7α)... Main pillar, 09... Lifting device, (211... Guide rail, 02nd floor... Trolley, (
B)...Telescopic frame, Q...Base part, ((2)...Legs, wire...Cylinder. Patent applicant Ishikawajima Harima Heavy Industries Co., Ltd. 1"-4 Fig. 18 7h -544- No. Figure 17

Claims (1)

[Claims] ■) In a climbing crane that uses both an inner mast and an outer mast, a lifting device is installed between the upper end of the inner mast and the outer mast that support the revolving structure, and at the lower end of the inner mast located at the lowest stage. It has an extendable pedestal having a connectable pedestal and legs that are extendable and retractable in the direction of the main column for fixing to the main column constituting the outer mast, and the load from the inner mast side is transferred through the pedestal. A climbing crane characterized by being configured to transmit information to the outside mast side.