JP2553311Y2 - Tower crane lifting equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator for a tower crane.

[0002]

2. Description of the Related Art A tower crane is generally moved up and down by a work process shown in FIG. That is, FIG.
From the state where the two masts p are connected as shown in (a), a hydraulic jack s is mounted between the support base q and the reaction table r of the upper and lower masts as shown in FIG. Next, as shown in FIGS. 12 (c) to 12 (h), the hydraulic jack s is repeatedly expanded and contracted to cause the tower crane t to climb by one mast, and then, as shown in FIG. The tower crane t is raised by a so-called shading insect method of connecting and becoming independent.
The tower crane is lowered by reversing the order. In FIG. 12, reference symbol u denotes a support member, and v denotes a fixed base.

[0003]

Problems to be Solved by the Invention The conventional lifting and lowering work of the tower crane is as follows: (1) Since the masts are sequentially connected upward, the connecting work of the masts becomes a dangerous work at a high place with a poor footing, which is dangerous. is there. (2) The connecting work of the mast is a high-place work with a poor footing, and the adoption of the climbing insect climbing method requires a long time to move the tower crane up and down. (3) The operation is complicated and requires special technicians.

There was a problem that The present invention has been proposed in view of the problems of the prior art described above, and the object of the present invention is to provide a lifting / lowering device for a tower crane that can ensure work safety and greatly improve workability. It is in.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is configured to surround a connecting mast attached to a tower crane when the tower crane is temporarily placed on the top of a gantry. Elevating frame with frame type structure, transport means for transporting the next connecting mast to the lower part of the elevating frame, horizontal telescopic member that engages and disengages with the connecting mast, and tower crane temporarily placed on top of the elevating frame Then, the connecting mast on the tower crane side and the tower crane are raised via the horizontal telescopic member to form an insertion space for the next connecting mast below the connecting mast, and for raising and lowering the next connecting mast. A vertical telescopic member that raises the next connecting mast via a horizontal telescopic member and joins it to the connecting mast on the tower crane when transported to the lower part of the gantry, and a connecting mast on the tower crane side A lock device that engages with the connection mast on the tower crane side to support the connection mast and the tower crane when an insertion space portion for the next connection mast is formed below, and a guide roller that guides the lifting and lowering of the connection mast The vertical expansion / contraction member, the lock device, and the guide roller are installed on the elevating gantry, and the transporting means is installed on a lowermost fixed base of the elevating gantry. .

2. The tower crane elevating device according to claim 1, wherein the conveying means includes a connecting mast transferring roller conveyor installed on a fixed base at the lowermost portion of the elevating frame.
A horizontal expansion / contraction adjusting device for moving the next connection mast on the roller conveyor to a position directly below the connection mast on the tower crane side (claim 2).

[0007]

When the tower crane is temporarily placed on the top of the elevating rack, the horizontal telescopic member is lowered by the vertical telescopic member, and then the horizontal telescopic member is engaged with the connection mast on the tower crane side, and then the horizontal telescopic member is moved. And the connecting mast on the tower crane side and the tower crane are raised by the vertical telescopic member to form an insertion space for the next connecting mast below the connecting mast on the tower crane side, and then connect the connecting mast on the tower crane side. Locked by the lock device, then transport the next connecting mast to the insertion space by the transport means, and then move the next connecting mast to a position directly below the tower crane side connecting mast by the horizontal expansion and contraction adjusting device,
Next, the horizontal telescopic member is disengaged from the connection mast on the side of the tower crane, the horizontal telescopic member is lowered by the vertical telescopic member to face the next connection mast, and then the horizontal telescopic member is engaged with the next connection mast. Then, the horizontal telescopic member and the next connecting mast are raised by the vertical telescopic member,
The next connection mast is joined to the connection mast on the tower crane side from below, connected to each other with bolts, etc., then the lock device is unlocked, and then the next connection mast and the connection mast on the tower crane side are connected. The tower crane is raised by the vertical telescoping member to form an insertion space for the connection mast below the next connection mast below the next connection mast, and then the above operation is repeated to raise the tower crane to the predetermined height. Raise to the end. When the tower crane is dismantled, the tower crane is lowered in the same manner, but in the reverse order.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a lifting device for a tower crane according to the present invention will be described with reference to the drawings. 1 to 6 show one embodiment of the tower crane device of the present invention. In FIGS. 1 to 6, A is a lifting frame, and the lifting frame A is
Four vertical frame members a, four upper horizontal frame members b connecting the upper portions of the respective vertical frame members a, and four middle horizontal frame members connecting the upper and lower intermediate portions of the respective vertical frame members a b and four lower horizontal frame members b connecting the lower portions of the respective vertical frame members a.
And a bracket c for connecting adjacent horizontal frame members b of the same level among the respective horizontal frame members b, and is installed on the fixed base B.

Reference numeral 1 denotes a vertical telescopic member such as a hydraulic cylinder which expands and contracts in the vertical direction. There are two vertical telescopic members 1, and the upper and lower parts of one vertical telescopic member 1 are connected to the upper horizontal frame assembly b on the same side. It is attached to the center of the middle horizontal frame assembly b,
The upper and lower portions of the other vertical elastic member 1 are attached to the center of the upper horizontal frame assembly b and the middle horizontal frame assembly b on opposite sides.

Reference numeral 2 denotes a horizontal telescopic member such as a hydraulic cylinder which expands and contracts in the horizontal direction. There are also two horizontal telescopic members 2, and one horizontal telescopic member 2 is placed horizontally at the lower end of one vertical telescopic member 1. Attached, the other horizontal elastic member 2 is attached to the lower end of the vertical elastic member 1 on the opposite side in a horizontal state,
They are facing each other. E is a tower crane, and D 'is a connection mast on the tower crane side attached to the tower crane E in a hanging state.

Reference numeral 3 denotes a lock device.
One locking device 3 is mounted horizontally at the center of another middle horizontal frame member b to which the vertical elastic member 1 is not attached, and the other locking device 3 is also attached to the vertical elastic member 1 It is mounted horizontally at the center of the middle horizontal frame member b on the opposite side, which is not provided, and faces each other.

When the lock device 3 is operated in the extending direction, the rod of the lock device 3 is engaged with the connecting mast D 'on the tower crane side, and the entire tower crane E is temporarily moved to the elevating pedestal A. Has the role of temporary storage. 4 is a guide roller, and there are eight guide rollers 4 in total.
Two pieces are installed on the upper horizontal frame assembly b of the book, and each of the connecting masts D 'is brought into contact with each side of the connecting mast D' across the corners of the connecting mast D 'on the tower crane E side. ′ Is held vertically, and the entirety of the tower crane E is smoothly lifted and lowered.

C is a mounting table for a roller conveyor installed on a fixed base B, and the mounting table C for the roller conveyor includes:
A guide roller conveyor 5 with a driving device for transporting the next connection mast D, and the position of the next connection mast D conveyed below the connection mast D 'on the tower crane E side are adjusted to adjust the next connection. Four horizontal expansion / contraction adjusting devices (horizontal expansion / contraction adjusting devices such as hydraulic cylinders) 6 for moving the mast D directly below the connection mast D ′ on the tower crane E side are provided.

In the figures, reference numeral d denotes a bracket, and e denotes a mounting base. Next, the operation of the tower crane apparatus shown in FIGS. 1 to 6 will be specifically described. (1) When the tower crane E is temporarily placed on the top of the elevating gantry A, after the horizontal elastic member 2 is lowered by the vertical elastic member 1, the horizontal elastic member 2 is connected to the connecting mast D 'on the tower crane E side. Engages. (2) Next, the horizontal mast D ′ on the side of the tower crane E is raised by the vertical telescopic member 1 by raising the connecting mast D ′ on the side of the tower crane E and the connecting mast D ′ on the tower crane E side.
Is formed below the connecting mast D. (3) Next, the connection mast D ′ on the tower crane E side is locked by the lock device 3. (4) Next, the next connection mast D is transported to the insertion space by the guide roller conveyor 5 with a driving device of the transport means. (5) Next, the connecting mast D ′ on the tower crane E side is transferred to the next connecting mast D by the horizontal expansion and contraction adjusting device 6 of the conveying means.
To the position directly below. (6) Next, the horizontal telescopic member 2 is detached from the connecting mast D ′ on the tower crane E side, and the horizontal telescopic member 2 is lowered by the vertical telescopic member 1 to face the next connecting mast D. (7) Next, the horizontal elastic member 2 is engaged with the next connection mast D. (8) Next, the horizontal elastic member 2 and the next connecting mast D are raised by the vertical elastic member 1, and the next connecting mast D is raised.
Are connected to the connection mast D ′ on the tower crane E side from below, and are connected to each other by bolts or the like. (9) Next, the lock of the lock device 3 is released. (10) Next, connecting mast D and tower crane E
The connection mast D ′ on the side and the tower crane E are raised by the vertical telescopic member 1 to form an insertion space for the connection mast below the next connection mast below the connection mast D below. (11) Thereafter, the above operation is repeated to raise the tower crane to a predetermined height. (12) When the tower crane E is dismantled, the tower crane E is lowered by operating in the same manner but operating in the reverse order.

[0015]

[Effects of the Invention] The tower crane lifting device according to the present invention lowers the horizontal telescopic member by the vertical telescopic member when the tower crane is temporarily placed on the top of the elevating platform as described above, and then moves the horizontal telescopic member. Engage with the connecting mast on the tower crane side, and then raise the horizontal telescopic member, the connecting mast on the tower crane side, and the tower crane with the vertical telescopic member, and place the next connecting mast below the connecting mast on the tower crane side. An insertion space is formed, then the connection mast on the tower crane side is locked by a lock device, and then the next connection mast is conveyed to the insertion space by the conveyance means, and then the next connection mast is horizontally expanded and contracted. To move it to a position directly below the connection mast on the tower crane side, and then detach the horizontal telescopic member from the connection mast on the tower crane side, The flat telescopic member is lowered by the vertical telescopic member to face the next connecting mast, then the horizontal telescopic member is engaged with the next connecting mast, and then the horizontal telescopic member and the next connecting mast are vertically expanded and contracted. It is raised by the member, the next connection mast is joined to the connection mast on the tower crane side from below, connected to each other by bolts and the like, then the lock device is unlocked, and then the next connection mast and the tower are connected. The connecting mast on the crane side and the tower crane are raised by the vertical telescopic member to form an insertion space portion of the connecting mast below the next connecting mast below the next connecting mast, and then repeat the above operation, Raise the tower crane to a predetermined height. When the tower crane is dismantled, the tower crane is moved down in the same manner, but in the reverse order, so that work at a high place with a poor scaffold can be eliminated and the safety of the work can be secured.

Also, since the operation is performed easily and quickly,
Special technicians can be eliminated, and workability can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a tower crane lifting device according to the present invention.

FIG. 2 is a longitudinal sectional side view taken along the line II in FIG. 1;

FIG. 3 is a vertical sectional side view taken along a line 2-2 in FIG. 1;

FIG. 4 is a vertical sectional side view taken along a line C-A in FIG. 1;

FIG. 5 is a cross-sectional plan view taken along the line II-II in FIG. 2;

FIG. 6 is a cross-sectional plan view taken along a line indicated by arrows in FIG. 2;

FIG. 7 is a side view showing a working state by the elevating device of the tower crane of the present invention.

FIG. 8 is a side view showing the next step of FIG. 7;

FIG. 9 is a side view showing the next step of FIG. 8;

FIG. 10 is a side view showing the next step of FIG. 9;

FIG. 11 is a side view showing the next step of FIG.

FIG. 12 (a) (b) (c) (d) (e) (f)
(G) (h) (i) is a side view showing the working process of the elevating device of the conventional tower crane.

[Explanation of symbols]

 Reference Signs List A Lifting base B Lifting base A fixed base C Roller conveyor mounting table D Next-order connecting mast D 'Tower crane E side connecting mast E Tower crane Bracket of material d 1 Vertical expansion and contraction member 2 Horizontal expansion and contraction member 3 Lock device 4 Guide roller 5 Guide roller conveyor with driving device for transfer means 6 Horizontal expansion and contraction adjustment device for transfer means

Claims (2)

(57) [Scope of request for utility model registration] An elevating frame having a frame-type structure configured to surround a connecting mast attached to the tower crane when the tower crane is temporarily placed on the top of the frame;
A transport means for transporting the next connection mast to the lower part of the elevating platform, a horizontal telescopic member which is disengaged from the connecting mast, and via a horizontal telescopic member when the tower crane is temporarily placed on the top of the elevating platform. The connecting mast on the side of the tower crane and the tower crane are raised to form an insertion space for the next connecting mast below the connecting mast, and when the next connecting mast is conveyed to the lower part of the elevating platform, it is horizontal. When a vertical expansion member that raises the next connection mast via the expansion member and joins the connection mast on the tower crane side and an insertion space portion for the next connection mast below the connection mast on the tower crane side are formed. A lock device that engages with the connection mast on the tower crane side to support the connection mast and the tower crane, and raises and lowers the tower crane via the connection mast on the tower crane side And a guide roller provided therein, wherein the vertical expansion / contraction member, the lock device, and the guide roller are installed on the elevating platform, and the transporting means is installed on a fixed base at a lowermost portion of the elevating platform. Tower crane lifting equipment. 2. A roller conveyor for transferring a connecting mast, which is installed on a fixed base at the lowermost part of an elevating platform, and a next connecting mast on the roller conveyor being positioned directly below a connecting mast on the tower crane side. The tower crane lifting / lowering device according to claim 1, comprising a horizontal expansion / contraction adjustment device for moving the tower crane.