Lifting device

Abstract

Prevent the wire from being randomly wound around the wire drum of the lifting device. 【Solution means】A winch 3 having a winch drum 11 around which a wire 10 for suspending a material is wound, and a swing axis 4 extending in the vertical direction and supporting the winch drum 11 so as to be horizontally rotatable are provided. During the winding operation of the wire 10 around the winch drum 11, the swing axis 4 rotates to one side of both sides around the axis, so that the wire 10 is wound in parallel in a spiral shape from one end side to the other end side of the winch drum 11. After the wound wire 10 reaches the other end of the winch drum 11, the swing axis 4 rotates to the other side around the axis of the swing axis 4, so that the wire 10 is wound in parallel in a spiral shape from the other end side to the one end side of the winch drum 11. It is a lifting device.

Description

Technical Field

[0001] This invention relates to a hoisting device for lifting and lowering materials.

Background Art

[0002] In various construction sites such as construction sites and demolition sites, when working at heights of construction buildings, the lifting and lowering of materials may be carried out between the high working area and the ground. At this time, in order to efficiently lift and lower materials, a hoisting device using a winch may be used (for example, Patent Document 1).

[0003] The hoisting device of Patent Document 1 includes a carrier on which materials are loaded and a winch for lifting and lowering the carrier. The winch has a wire and a winch drum for winding the wire. The winch is provided near the high working area of a temporary scaffold erected around the construction building, and the wire extending from the winch is connected to the carrier.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the wire of the winch of the hoisting device of Patent Document 1, it may be wound unevenly with respect to the winch drum and be in a so-called disordered winding state where it is wound complicatedly. In particular, for example, when the working area is at an extremely high position exceeding 30 m, the required length of the wire becomes long, and the degree of disordered winding tends to increase (see Fig. 7).

[0006] When entanglement occurs, it may lead to problems such as wire damage and poor winding. By relaying multiple winches and shortening the length of the wire on each winch, entanglement can be reduced. However, installing multiple winches is troublesome and costly. Therefore, a configuration that can prevent wire entanglement is required even if the wire is long.

[0007] The problem to be solved by this invention is to prevent the wire from becoming entangled around the wire drum of the hoisting device.

Means for Solving the Problem

[0008] To solve the above problems, this invention adopts a hoisting device with the following configuration. [Configuration 1] A winch having a winch drum around which a wire for suspending materials is wound, A swing shaft that extends in the vertical direction and supports the winch drum so as to be rotatable in the horizontal direction, and In accordance with the winding operation of the wire around the winch drum, the swing shaft rotates to one side of both sides around the axis, so that the wire is wound in parallel in a spiral shape from one end side to the other end side of both ends of the winch drum. After the wound wire reaches the other end of the winch drum, the swing shaft rotates to the other side around the axis of the swing shaft, so that the wire is wound in parallel in a spiral shape from the other end side to the one end side of the winch drum.

[0009] [Configuration 2] Further comprising a guide rail extending in the vertical direction, The hoisting device according to Configuration 1, wherein the swing shaft is connected to the guide rail so as to be movable in the vertical direction.

[0010] [Configuration 3] Further comprising a carrier connected to the wire and on which the materials are loaded, The hoisting device according to Configuration 2, wherein the carrier is connected to the guide rail so as to be slidable in the vertical direction.

[0011] [Configuration 4] A flat mounting plate attached to the winch, Two pipe materials attached to the mounting plate, extending in the lateral direction and arranged in parallel in the vertical direction, A mounting table attached to the swing axis, on which one of the two pipe materials is placed, The hoisting and lowering device according to any one of Configurations 1 to 3, further comprising a fixing fitting for fixing the other pipe material of the two pipe materials to the swing axis.

Advantages of the Invention

[0012] In the hoisting and lowering device of this invention, since the swing axis rotates during the winding operation of the wire around the winch drum, the wire can be wound in order from one end to the other end, or from the other end to one end of the winch drum. Therefore, the wire is not wound unevenly, and the disorderly winding of the wire can be prevented.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the hoisting device 1 according to the embodiment of the present invention is used to efficiently lift and lower materials between a high work site and the ground G at various construction sites such as construction sites and demolition sites. In the embodiment, the hoisting device 1 attached to the support column 2 of the temporary scaffold erected around the construction building will be described as an example.

[0015] The hoisting device 1 includes a winch 3 provided at the upper part of the support column 2, a swing shaft 4 that rotatably supports the winch 3, a guide rail 5 extending in the vertical direction, and a carrier 6 for loading materials.

[0016] The winch 3 consists of a wire 10 for suspending materials and a winch drum 11 for winding the wire 10. The wire 10 extends downward from the winch drum 11 and is connected to the carrier 6. As shown in FIGS. 3 and 4, the winch drum 11 has a cylindrical portion 12 around which the wire 10 (see FIG. 1) is wound, and flange portions 13 protruding radially outward from both ends of the cylindrical portion 12. The cylindrical portion 12 is arranged to extend horizontally so that the wire 10 can be wound.

[0017] As shown in FIG. 2, the swing shaft 4 extends in the vertical direction. The swing shaft 4 is rotatably connected between an upper end holder 14 that pivotally supports the upper end of the swing shaft 4 and a lower end holder 15 that pivotally supports the lower end of the swing shaft 4 from the vertical direction. The swing shaft 4 supports the winch drum 11 via an attachment plate 16 (described later) so that it can swing horizontally. The swing shaft 4 is configured to rotate by a motor (not shown) in conjunction with the winding operation of the wire 10 (see FIG. 1) around the winch drum 11. Also, the swing shaft 4 is configured to rotate in the reverse direction in conjunction with the feeding operation of the wire 10 to the winch drum 11.

[0018] As shown in FIG. 1, the guide rail 5 is fixed to the support column 2. The guide rail 5 extends in the vertical direction parallel to the support column 2. The carrier 6 is slidably connected to the guide rail 5 in the vertical direction.

[0019] The carrier 6 is formed in a cage shape so that materials can be loaded thereon. The carrier 6 is connected to the wire 10 and moves vertically according to the movement of the wire 10. By connecting the carrier 6 to the guide rail 5, the sway of the carrier 6 can be suppressed, and the sway of the wire 10 connected to the carrier 6 can also be suppressed. Therefore, it is possible to prevent the wire 10 from being wound around the winch drum 11 in a disorderly manner due to the sway of the wire 10.

[0020] Further, a swing shaft 4 is connected to the guide rail 5 so as to be movable in the vertical direction and is fixed at a desired installation height. The swing shaft 4 is made to be in a slidable state in the vertical direction by loosening the fixing state to the guide rail 5. Since the swing shaft 4 supporting the winch 3 can be in a slidable state in the vertical direction, the installation height of the winch 3 can be easily changed according to the progress of the construction.

[0021] As shown in FIGS. 3 and 4, the winch 3 is attached to the swing shaft 4 via a mounting plate 16, a plurality of pipe members 17a, 17b, a mounting table 18, and a fixing bracket 19.

[0022] The mounting plate 16 is formed in a flat plate shape. The mounting plate 16 is attached to the winch drum 11. The mounting plate 16 is located between the winch drum 11 and the swing shaft 4 and is provided so as to face the swing shaft 4.

[0023] The pipe members 17a, 17b are formed in a cylindrical shape. The pipe members 17a, 17b are attached to the mounting plate 16. The pipe members 17a, 17b extend horizontally so as to be parallel to the winch drum 11. Also, two are provided in parallel in the vertical direction.

[0024] The mounting table 18 is attached to the swing shaft 4. The mounting table 18 is formed so as to be able to mount one of the two pipe members 17a, 17b (the upper pipe member 17a), and the pipe member 17a is mounted thereon.

[0025] The fixing fitting 19 fixes the other pipe material 17b (the lower pipe material 17b) of the two pipe materials 17a and 17b to the swing shaft 4. The fixing fitting 19 is attached to the swing shaft 4 by clamping the swing shaft 4 from both sides and tightening. Also, the fixing fitting 19 is attached to the pipe material 17b by clamping the pipe material 17b from both sides and tightening.

[0026] When installing the winch 3, the mounting plate 16 and the pipe materials 17a and 17b are attached to the winch 3 in advance. By doing so, the winch 3 can be easily attached to the swing shaft 4 by placing the pipe material 17a on the mounting table 18 and fixing the pipe material 17b to the swing shaft 4 by the fixing fitting 19. Also, since the mounting plate 16 can be easily removed from the swing shaft 4 from the parts of the pipe materials 17a and 17b, even when changing the specifications of the winch 3 to increase the length of the wire 10, after removing it, the winch 3 can be easily replaced on the mounting plate 16 at a stable place, and the specification change work of the winch 3 can be easily performed.

[0027] Next, the winding operation of this hoisting device 1 will be described.

[0028] As shown in FIG. 5, when the winch 3 presses the start switch (not shown) of the winch 3, the winch 3 starts the winding operation of the wire 10 around the cylindrical portion 12 of the winch drum 11. At this time, as shown in FIG. 6, the swing shaft 4 rotates (swivels) to one side (the clockwise side in FIG. 6) of both sides around the axis of the swing shaft 4 in accordance with the winding operation of the wire 10 around the cylindrical portion 12, and the winch drum 11 is swiveled to one side around the axis of the swing shaft 4. The swivel speed of the winch drum 11 is set so that the wire 10 is wound in a spiral shape side by side one turn at a time around the cylindrical portion 12 in accordance with the winding speed of the wire 10 around the cylindrical portion 12. Thereby, the wire 10 is wound in a spiral and parallel manner from one end side (the lower side in FIG. 6) to the other end side (the upper side in FIG. 6) of both ends of the cylindrical portion 12.

[0029] After that, when the wound wire 10 reaches the other end (the upper side in FIG. 6) of the winch drum 11, the swing shaft 4 rotates (swivels) to the other side (the counterclockwise side in FIG. 6) around the axis of the swing shaft 4, and the winch drum 11 is swiveled to the other side around the axis of the swing shaft 4. As a result, the wire 10 is wound in parallel from the other end side (the upper side in FIG. 6) to the one end side (the lower side in FIG. 6) of the winch drum 11.

[0030] Furthermore, when the wire 10 reaches one end (the lower side in FIG. 6) of the winch drum 11, the swing shaft 4 rotates (swivels) again to one side (the clockwise side in FIG. 6) around the axis of the swing shaft 4, thereby swiveling the winch drum 11 to one side around the axis of the swing shaft 4. By repeating these operations, the wire 10 is wound around the winch drum 11 in an aligned manner.

[0031] In the hoisting device 1 of this embodiment, since the swing shaft 4 swivels during the winding operation of the wire 10 around the winch drum 11, as shown in FIG. 8, the wire 10 can be wound in sequence from one end to the other end, or from the other end to one end of the winch drum 11. Therefore, the wire 10 is not wound unevenly, and it is possible to prevent the wire 10 from being in a jumbled winding state as shown in FIG. 7.

[0032] The embodiments disclosed this time should be considered as illustrative in all respects and not restrictive. The scope of the present invention is shown not by the above description but by the scope of claims for utility model registration, and it is intended that all modifications within the meaning and scope equivalent to the scope of claims for utility model registration are included.

Explanation of Reference Numerals

[0033] 3 Winch 4 Swing shaft 5 Guide rail 6 Carrier 10 Wire 11 Winch drum 16 Mounting plate 17a, 17b Pipe material 18 Mounting table 19 Fixing fixture

Claims

1. A winch (3) having a winch drum (11) around which a wire (10) for suspending materials is wound, and a swing axis (4) extending in the vertical direction and supporting the winch drum (11) so as to be horizontally swingable, and comprising: In accordance with the winding operation of the wire (10) around the winch drum (11), the swing axis (4) swings to one side of both sides around the axis, so that the wire (10) is spirally and parallelly wound from one end side to the other end side of both ends of the winch drum (11). After the wound wire (10) reaches the other end of the winch drum (11), the swing axis (4) swings to the other side around the axis of the swing axis (4), so that the wire (10) is spirally and parallelly wound from the other end side to the one end side of the winch drum (11). A lifting device.

2. Further comprising a guide rail (5) extending in the vertical direction, The swing axis (4) is vertically movably connected to the guide rail (5). The lifting device according to claim 1.

3. Further comprising a carrier (6) connected to the wire (10) and on which the materials are loaded, The carrier (6) is vertically slidably connected to the guide rail (5). The lifting device according to claim 2.

4. A flat mounting plate (16) attached to the winch (3), Pipe materials (17a, 17b) attached to the mounting plate (16) and extending horizontally and arranged in parallel in the vertical direction, A mounting table (18) attached to the swing axis (4) and on which one of the two pipe materials (17a) is placed, The lifting device according to any one of claims 1 to 3, further comprising a fixing bracket (19) for fixing the other pipe material (17b) of the two pipe materials (17a, 17b) to the swing axis (4).

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