JP3004731U - Multi-point hanging jig - Google Patents

Abstract

(57) [Abstract] [Purpose] Mainly relates to a hanging jig used for lifting work of a large and heavy PC plate, which is particularly easy to sling, and the mounting position of the hanging bracket on the PC plate side. That is, an object of the present invention is to provide a hanging jig that can always lift the PC plate in a horizontal state without adjusting the length of the sling wire even if there is an error in the pitch. [Structure] A suspension beam 2 in which suspension wires 7 and 7 are connected to both left and right ends, and a master ring 8 is connected to both upper ends of the suspension wires, and a balance is connected to a lower end portion of a vertical member 3a via a spindle 4a. A plurality of suspension fittings 4 pivotally attached to the middle portion of the member 3b and the upper end portion integrally attached to the lower surface of the suspension beam at a constant pitch, and a sling wire 5 with hooks in each suspension fitting. It is characterized in that the left and right ends of the member are connected and hung.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to a multi-point hanging jig used for lifting work of high-weight materials such as large PC plates.

[0002]

[Prior art]

 In order to shorten the construction period, reduce costs, and save labor in the construction of buildings, etc., floor slabs and outer wall slabs are manufactured in advance in the factory, and they are brought to the site and assembled, a so-called panel construction method or prefabricated construction method It is well known that the so-called construction method is widespread.

By the way, in a construction site employing such a construction method, when the PC plate is hoisted to a predetermined position and the assembling work is carried out, conventionally, a hanging jig 50 as shown in FIG. A single wire rope is used for slinging, lifting, and hanging. To further explain this point, first, as the hanging jig 50, a hanging jig is provided by vertically suspending a plurality of sheaves 52 (three in the figure) on a lower surface of a horizontal hanging beam 51 at regular intervals. The jig 50 is used. On the other hand, on the side of the PC plate to be lifted, a plurality of embedded-type hanging metal fittings 53 are provided at a predetermined interval on one side in the longitudinal direction in advance in the manufacturing stage. Between each hanging metal fitting 53 on the side and each sheave 51 on the hanging jig 50 side, one wire rope 54 is sequentially hung from the end so as to present a W shape, that is, a sling (commonly known as lightning bolt). I slid it up and lifted it up.

[0004]

[Problems to be solved by the device]

 However, according to such a conventional hanging jig and sling system, there are the following defects and problems. (1) Sliding work is troublesome. That is, it takes a lot of time to hang one wire rope 54 between the sheave 52 on the hanging jig 50 side and the embedded hanging metal fitting 53 on the PC plate side in a W shape. (2) Since the hanging metal fitting 53 provided on one side in the longitudinal direction of the PC plate side is mounted in an embedded form at the manufacturing stage, the distance between the left and right hanging metal fittings 53 is not always constant. In many cases. In other words, there are many cases where there is an error in the left-right spacing of the suspension fulcrum. As a result, when the PC plate was suspended by hanging the hanging jig and the sling, the PC plate itself was suspended in an inclined state, and it was not possible to carry out the suspending work while maintaining the horizontal posture. (3) Since the wire rope 54 used for slinging is hung between the sheave 52 on the hanging jig 50 side and the hanging metal fitting 53 on the PC plate side in a W shape, that is, a shape bent at each hanging fulcrum. Since it is slung, the wire rope 54 at the bent portion may be damaged or twisted, and in some cases, a kink may be generated. As a result, not only the slinging work is hindered, but especially this tendency becomes remarkable as the PC plate becomes larger and heavier. By the way, recently, with the increase in the number of buildings, some PC plates have a span of 10 meters and a weight of 10 tons. Therefore, there was a demand for the development of a hanging jig that copes with such an increase in size and weight. The present invention aims to provide a hanging jig for a PC plate that meets such demands, and particularly slinging work is easy, and even if there is an error in the embedded position of the hanging bracket on the PC plate side, that is, the pitch. It was devised with the aim of providing a hanging jig that can always lift the PC plate in a horizontal state without adjusting the length of the sling wire.

[0005]

[Means for Solving the Problems]

 As a means for achieving the above-mentioned object, the present invention has a suspension beam, a plurality of suspension fittings, and a plurality of sling wires configured as follows, and combined to form a multi-point suspension jig. is there.

First, the suspension beam has a configuration in which suspension wires are connected to both left and right ends, and two upper ends of the suspension wire are connected to a master ring. In other words, the suspension beam is configured to hang this master ring on a suspension hook such as a crane and suspend it horizontally.

Next, each of the plurality of suspension fittings has a vertical member and a balance member, and is configured as follows. That is, the intermediate member of the balance member is pivotally supported on the lower end of the vertical member via a support shaft, and the upper end is integrally attached to the lower surface of the suspension beam at a constant interval.

Further, the plurality of sling wires are configured such that sling fittings such as hooks are connected to the lower ends of the wire ropes having the same length. That is, the sling wire with hook was used. The upper end of each sling wire is connected to the left and right ends of the balance member of each suspension fitting attached to the suspension beam, and one hook is attached to each end of the balance member of each suspension fitting, for a total of two hook sling wires. It is characterized by having a structure in which the

[0009]

[Action]

 With the above-described structure, the sling wire hanging from the balance member of the hanging beam side hanging fitting is slid on the embedded hanging fitting on the PC plate side to be lifted in advance via the hook. That is, the sling wire hanging from each balance member of each hanging metal fitting is slung on the hanging metal fitting on the PC plate side so as to form an inverted V shape. Then, the PC plate is lifted by multi-point suspension.

[0010]

【Example】

 Further, the configuration and operation of the present invention will be specifically described based on the embodiments shown in the drawings. FIG. 1 is a side view showing a state in which a PC plate is lifted by a four-point hanging type hanging jig 1. That is, two hanging fittings 4 each including a vertical member 3a and a balance member 3b are attached to the left and right ends of the hanging beam 2, and the sling wires 5 are attached to the left and right ends of the balance member 3b in each hanging fitting 4, respectively. And 5 are connected and hung down to form a hanging jig 1 having a total of four sling wires 5. In the figure, 6 is a hook as a sling fitting attached to the lower ends of the sling wires 5 and 5, and 7 and 7 are suspension wires for suspending the suspension beam 2 at all times. Is a master ring that connects the upper ends of the two suspension wires 7 and 7.

FIG. 2 is a side view showing the configuration of the hanging jig body in which the hanging metal fittings 4 and 4 are attached to the lower surfaces of the left and right ends of the hanging beam 2 shown in FIG. FIG. 3 is a plan view of FIG. The suspension beam 2 constituting the suspension jig main body was constructed by connecting two U-shaped steels back to back. The hanging member 4 including the vertical member 3a and the balance member 3b has a structure in which the upper ends of the vertical member 3a are integrally attached to the left and right ends of the hanging beam 2 by bolting and welding. . The intermediate portion of the balance member 3b is pivotally supported by the lower end portion of the vertical member 3a via the support shaft 4a. 3c and 3c are connecting holes for connecting the upper ends of the sling wires 5 provided at the left and right ends of the balance member 3b, respectively.

In the embodiment, as shown in FIGS. 2 and 3, vertical columns 9 and 9 are attached to the left and right of the suspension beam 2 so that the suspension beam 2 can be stored in a stable state when not in use. I was able to keep it.

FIG. 4 shows an embodiment in which the balance member 3b in the hanging fitting 4 shown in FIG. 2 is formed by a plate-shaped body having a triangular side surface. This is to eliminate the bending stress acting on the balance member 3b itself due to the hanging load from bending the left and right end portions with the support shaft 4a as a fulcrum.

In FIG. 5, instead of a general planographic PC plate, a lifting operation is performed on a PC plate including a horizontal plate portion and a vertical plate portion, such as a PC plate for a veranda, which has an L-shaped side surface. Therefore, it is a perspective view showing another embodiment of the hanging metal fitting 4 attached to the lower surface of the hanging beam 2. FIG. 6 is a front view in which an L-shaped PC plate is slid by the hanging jig 1 to which the hanging fitting 4 is attached, and FIG. 7 is a side view.

In this case, as shown in the drawing, two sling wires 5 and 5 are additionally connected to the balance member 3b of each hanging fitting 4 so that a total of four sling wires 5 are hung. . That is, as shown in the perspective view of FIG. 5, the balance member 3b constituting the hanging fitting 4 is constituted by a quadrilateral plate member, and the central portion of the quadrilateral balance member 3b is connected to the lower end of the vertical member 3a by the ball joint 4b. The slanting wire 5 is connected to the four corners of the quadrilateral balance member 3b, and four slinging wires 5 are hung down from one hanging metal fitting 4.

[0016]

[Effect of device]

 The multi-point hanging jig according to the present invention attaches a plurality of hanging metal fittings to the lower surface of the hanging beam at a constant pitch, and hangs two or four sling wires on the balance member of each hanging metal fitting. Even if there is a slight misalignment in the mounting position of the embedded hanging bracket provided on the PC plate side, which is the material to be lifted, the error is absorbed by the balance member inclination. . As a result, by using the lifting jig according to the present invention, it is possible to easily sling without adjusting the length of the sling wire, and moreover, the material to be lifted is always kept in a horizontal state for lifting. You can In other words, it is possible to safely carry out lifting work in a horizontally stable state without hanging a heavy material to be lifted on the sling wire in a manner that causes twisting.

[Brief description of drawings]

FIG. 1 is a front view of a hanging jig configured in a four-point hanging type.

FIG. 2 is a front view showing a configuration of a suspension beam and a suspension fitting.

FIG. 3 is a plan view of FIG.

FIG. 4 is a front view showing another example of the balance member in the hanging metal fitting.

FIG. 5 is a perspective view showing another example of the hanging metal fitting, showing a lifting operation of the PC plate for the veranda.

6 is a front view in which an L-shaped PC plate is slid with a hanging jig to which the hanging metal fitting shown in FIG. 5 is attached.

FIG. 7 is a side view of FIG.

FIG. 8 is a front view showing a conventional hanging jig.

[Explanation of symbols]

 1 Hanging jig 2 Hanging beam 3a Vertical member 3b Balance member 3c Connection hole 4 Hanging metal fittings 4a, (4b) Spindle (ball joint) 5 Sliding wire 6 Hook 7 Hanging wire 8 Master ring 9 Pillar

Claims (2)

[Scope of utility model registration request] 1. A multi-point hanging jig comprising a hanging beam, a plurality of hanging metal fittings, and a plurality of sling wires, wherein the hanging beam connects the hanging wires to both left and right ends.
Both upper ends of this suspension wire are connected to a master ring, and the plurality of suspension fittings are respectively composed of a vertical member and a balance member, and the balance member has an intermediate portion of a vertical member through a spindle. It is pivotally attached to the lower end, and the upper end is integrally attached to the lower surface of the suspension beam at a constant pitch, and the plurality of sling wires are respectively connected to sling fittings such as hooks at the lower end. A multi-point hanging jig, characterized in that the upper ends of the hanging sling wires are connected to the left and right ends of the balance member in each of the hanging fittings and hung down. 2. The balance member, which is a suspending metal fitting composed of a vertical member and a balance member, is a quadrilateral balance member having a quadrilateral planar shape, and its central portion is connected to the lower end portion of the vertical member through a ball joint. 2. The multi-point hanging jig according to claim 1, wherein said multi-point hanging jig is pivotally attached to the front and back, and four sling wires are connected to the four corners of the front and rear and left and right.