JP4956286B2 - Winding drum wire winding method at crane installation - Google Patents

Description

  The present invention relates to a winch drum wire winding method at the time of crane installation.

  Conventionally, when constructing a structure, a crane such as a climbing crane has been used.

  FIG. 2 is a schematic diagram showing a general climbing crane. In the climbing crane 1, a revolving unit 4 is pivotably disposed on the top of a mast 2 to which blocks 2a can be sequentially added upward through an elevating unit 3. A jib 5 is attached to the swinging body 4 so as to be able to be raised and lowered, and a counter frame 6 extending rearward is integrally provided on the swinging body 4, and a wire 8 for hanging a hanging load hook 7 on the counter frame 6. The hoisting winch drum 9 for hoisting and lowering the wire and the hoisting winch drum 11 for hoisting and lowering the wire 10 for raising and lowering the jib 5 are installed.

  By the way, in the case of the climbing crane 1 as described above, the length of the wire 8 wound around the hoisting winch drum 9 becomes longer because the height from the ground eventually becomes higher. The winding winch drum 9 is a so-called multilayer winding winch drum in which the wire 8 is wound around the outer peripheral surface of the drum body so as to form a plurality of layers instead of a single layer. The undulating winch drum 11 is often a so-called single-layer winding winch drum in which the wire 10 is wound around the outer peripheral surface of the drum body so as to form one layer.

  Then, when installing the climbing crane 1 as described above at the construction site, as shown in FIG. 3, the elevating unit 3 on which the swivel body 4 is turnably disposed is erected on the ground and divided in the longitudinal direction. The assembled jib 5 is assembled on the ground, and the assembled jib 5 is lifted by another crane (not shown) and connected to the base end portion of the jib 5 mounted on the swivel body 4 in an up and down manner, The wire 8 that is carried in the state of being wound around the wire drum 12 is fed out, and a required tension is applied via the wire tensioning device 13 while standing on the sheave 5a at the tip of the jib 5 and the revolving body 4. Further, it is wound around the sheave 14 a at the top of the guy support frame 14 and wound around the hoisting winch drum 9.

  Here, in particular, when the wire 8 of the wire drum 12 is wound around the hoisting winch drum 9 as the multilayer winding winch drum, the wire 8 must be wound with a required tension applied. The wire 8 is in a turbulent winding state (a state in which the wire 8 is messed up without being neatly wound in the axial direction of the hoisting winch drum 9) or wound in a loose state. When the wire 8 of the wire drum 12 is wound around the hoisting winch drum 9 as the multilayer winding winch drum, the wire 8 may be damaged by biting into the gaps between the wires 8. It was necessary to perform winding while applying a required tension to the wire 8 by the tensioning device 13.

  Incidentally, as in the case of the hoisting winch drum 9, an operation is performed in which the wire 10 carried in a state of being wound on a wire drum (not shown) is unwound and wound on the undulating winch drum 11. Since the undulating winch drum 11 is usually a single-layer wound winch drum, there is no fear that the wire 10 will be damaged by biting into the gaps between the wires 10 without using the wire tensioning device 13 in particular.

For example, Patent Document 1 shows a general technical level related to an operation of winding a wire around a winch drum when a crane is installed.
Japanese Patent Laid-Open No. 10-139362

  However, as described above, when winding the wire 8 of the wire drum 12 around the hoisting winch drum 9 as a multi-layer winding winch drum, the required tension is applied to the wire 8 by the wire tensioning device 13. A dedicated device (wire tensioning device 13) that is used only at the time of installation becomes indispensable, and the initial purchase cost of the device and the costs associated with maintenance and management are excessive, and the demand for improvement has increased.

  In addition, even what was disclosed by patent document 1 needed the apparatus for exclusive use for providing required tension | tensile_strength to a wire.

  In view of such circumstances, the present invention can eliminate the need for a dedicated device used only when installing a crane, such as a wire tensioning device, and can reduce the initial purchase cost and maintenance cost of the device at the time of crane installation. A winch drum wire winding method is to be provided.

The present invention provides a winch drum wire at the time of installation of a crane for winding a wire wound around a wire drum when the crane is provided with a multi-layer winch drum and another winch drum. In the winding method,
The wire wound around the wire drum is once wound around another winch drum,
The wire wound around the other winch drum is sequentially applied to the sheave at the top of the guy support frame, the sheave at the tip of the jib, the sheave at the hook for the load, the sheave at the tip of the jib, and the sheave at the top of the guy support frame. Multiply it and connect it to a multi-layer winch drum
In a state where the jib is supported, a tension applying weight is hung on the hanging hook.
The present invention relates to a winch drum wire winding method at the time of crane installation, wherein a wire is fed from the other winch drum and wound on the multilayer winding winch drum.

  According to the above means, the following operation can be obtained.

  If comprised as mentioned above, since it becomes possible to wind up the wire around the multi-layer winding winch drum in a state where the required tension is applied to the wire fed out from the other winch drum by the tension applying weight, the wire tensioning device Thus, it is not necessary to provide a dedicated device that is used only when the crane is installed, and it is possible to avoid the initial purchase cost of the device and the extra costs associated with maintenance and management.

  In the winch drum wire winding method at the time of crane installation, the multi-layer winding winch drum is a hoisting winch drum for raising and lowering the hanging load hook, and the other winch drum is a hoisting winch drum for raising and lowering the jib. It can be.

  According to the winch drum wire winding method at the time of crane installation of the present invention, a dedicated device that is used only at the time of crane installation such as a wire tensioning device can be made unnecessary, and the initial purchase cost and maintenance management cost of the device can be reduced. An excellent effect can be achieved.

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

FIG. 1 is an example of an embodiment for carrying out the present invention. In the figure, the same reference numerals as those in FIGS. 2 and 3 represent the same components and are wound around a wire drum 12 (see FIG. 3). The wound wire 8 is once wound around a undulating winch drum 11 as another winch drum,
The wire 8 wound around the hoisting winch drum 11 is divided into a sheave 14b at the top of the guy support frame 14, a sheave 5b at the tip of the jib 5, a sheave 7a of the hanging hook 7, and a sheave 5a at the tip of the jib 5. It hangs around the sheave 14a at the top of the guy support frame 14 and is connected to the hoisting winch drum 9 as a multi-layered winch drum,
In a state where the jib 5 is supported by being suspended from a hook 21 of another crane 20 by a suspension rope 22, a tension applying weight 15 is suspended from the hanging hook 7.
The wire 8 is fed out from the undulating winch drum 11 while being wound around the hoisting winch drum 9.

  Note that the end plates forming both ends of the drum body of the undulating winch drum 11 have a diameter sufficient to wind up the wire 8 as necessary.

  Next, the operation of the illustrated example will be described.

  When configured as described above, the wire 8 is wound up as a multi-layer winch drum in a state where a required tension is applied to the wire 8 fed out from the undulating winch drum 11 as another winch drum by the tension applying weight 15. Winding on the winch drum 9 becomes possible.

  For this reason, it is not necessary to provide a dedicated device that is used only when the climbing crane 1 is installed, such as the wire tensioning device 13 (see FIG. 3), and the initial purchase cost of the device and the costs associated with maintenance and management are extra. Can be avoided.

  When the wire 8 has been unwound from the hoisting winch drum 11, for example, a required portion of the wire 8 between the hoisting winch drum 11 and the sheave 14b is temporarily fixed to the guy support frame 14, and the hoisting is performed. After the end of the wire 8 is completely cut off from the winch drum 11 and the end of the wire 8 cut off from the undulating winch drum 11 is secured to a required portion of the guy support frame 14, the guy support frame 14 of the wire 8 is secured. What is necessary is just to cancel the temporary fixing to.

  In addition, after the winding operation of the wire 8 to the hoisting winch drum 9 is completed, the wire 10 (FIG. 2) is carried into the undulating winch drum 11 while being wound around a wire drum (not shown). (Refer to the above).

  Thus, a dedicated device that is used only when the climbing crane 1 is installed, such as the wire tensioning device 13, can be eliminated, and the initial purchase cost and maintenance cost of the device can be reduced.

  In addition, the winch drum wire winding method at the time of crane installation of this invention is not limited only to the above-mentioned illustration example, The crane provided with not only a climbing crane but a multilayer winding winch drum and other winch drums. As long as it can be applied to any crane, various changes can be made without departing from the scope of the present invention.

It is the schematic which shows an example of the form which implements this invention. It is the schematic which shows a general climbing crane. It is the schematic which shows a prior art example.

Explanation of symbols

1 Climbing crane (crane)
2 Mast 2a Block 3 Lifting unit 4 Revolving body 5 Jib 5a Sheave 5b Sheave 7 Hook for suspended load 7a Sheave 8 Wire 9 Winding winch drum (multi-layer winch drum)
11 Undulating winch drum (other winch drums)
12 Wire drum 14 Guy support frame 14a Sheave 14b Sheave 15 Tension weight 20 Other crane

Claims (2)

In the winch drum wire winding method at the time of installing the crane for winding the wire wound around the wire drum on the multilayer winding winch drum when installing the crane equipped with the multilayer winding winch drum and the other winch drum ,
The wire wound around the wire drum is once wound around another winch drum,
The wire wound around the other winch drum is sequentially applied to the sheave at the top of the guy support frame, the sheave at the tip of the jib, the sheave at the hook for the load, the sheave at the tip of the jib, and the sheave at the top of the guy support frame. Multiply it and connect it to a multi-layer winch drum
In a state where the jib is supported, a tension applying weight is hung on the hanging hook.
A winch drum wire winding method at the time of crane installation, wherein a wire is fed from the other winch drum and wound on the multilayer winding winch drum.   The winch drum wire at the time of crane installation according to claim 1, wherein the multi-layer winch drum is a hoisting winch drum for raising and lowering the hanging load hook, and the other winch drum is a hoisting winch drum for raising and lowering the jib. Winding method.

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