JPH0625276U - Hanging jig - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a hanging jig that can stably hang a tundish with little initial shaking and can be hung with a crane using one hook [Structure] Longitudinal direction On the upper surface of the jig body 1 which is very long,
It is provided with a pair of hanging bars 4 which are spaced from each other in the longitudinal direction and are opposed to each other, and which are provided at positions where they can be hooked on the respective hook portions of one hook-type hanging metal fitting 17, and the pair of hanging bars 4 are Each of them is rotatably supported around two support shafts 13 extending in the width direction of the jig body 1, and a jaw portion 16 is provided at the base of each suspension bar 4.
Is provided. During suspension, the swing center of the suspended load moves to the equalizer sheave just below the hoisting drum of the crane, the swing radius becomes longer, the amplitude angle of the wire cable becomes smaller, and the slant of the suspended load becomes smaller.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hanging jig. More specifically, the present invention relates to a hanging jig for a hanging load, such as a tundish of a continuous casting facility, in which the center of gravity of the hanging load may move due to free movement of a fluid in the container.

[0002]

[Prior art]

 Conventionally, in continuous casting equipment, high-temperature molten steel is placed in a tundish, conveyed to a specified position, and poured out. Such a tundish is usually hoisted by a single-type hook 102 of a crane via a hoisting jig 101 as shown in FIG. In other words, the hanging jig 101 is always hung on the hook 102 of the crane, and the four hanging hooks 103 hung at the four corners of the lower end of the hanging jig 101 hook the hanging pins 105 protruding to both sides of the tundish 104 to lift the hanging jig. is there.

[0003]

[Problems to be solved by the device]

By the way, in the case of a large capacity load such as the tundish 104, it is difficult to make the center of gravity G of the load body (iron skin + refractory) in the center of the hook 102 of the crane. A shift a occurs. Therefore, even if it is hung straight up, the hook 102 is tilted by a certain angle θ. Therefore, there is a problem that the suspended load shakes greatly when it is separated from the floor, and even when the swing stops, the suspended load is hung with a considerable inclination. Further, in the case of such one-point suspension, when the molten steel 106 moves in the direction of the arrow P due to the inclination angle θ, the center of gravity G ₀ shifts in the moving direction, and the hook 102 and the shaft 108 of the hanging metal fitting 107 move. Rotate between. It also rotates due to inertia when the crane starts and stops. Therefore, there is a serious problem that the molten steel 106 moves further in the same direction (arrow P) and finally overflows from the tundish 104. On the other hand, as a means for preventing the above-mentioned problems, a hanging beam type hanging jig is also known in which two ends of the hanging jig 101 in the longitudinal direction are hung by two crane hooks to obtain a stable hanging posture. There is. However, when such a hanging beam type hanging jig is used, the hanging metal fittings to be hung by the crane have to be of the hanger type, so that the equipment becomes extremely large and the lifting height of the crane cannot be increased. Since it can only be used in a large building, it cannot be widely used in practice.

In view of the above circumstances, the present invention can be stably hung with less shaking even in a suspended load such as a tundish whose center of gravity moves, and can be hung by a crane using one hook. An object is to provide a hanging jig that can be used.

[0005]

[Means for Solving the Problems]

 A hanging jig according to a first aspect of the present invention is such that at least two hooks mounted at intervals on a lower surface of a hanging jig body and at an upper surface of the hanging jig body are opposed to each other at an interval. And a pair of hanging bars provided at positions where they can be hooked on the hooks of one hook type hanging metal fitting, and the pair of hanging bars are parallel to each other provided on the upper surface of the hanging jig body. It is characterized in that it is pivotally supported around two spindles. The suspending jig of the second invention is characterized in that the pair of suspending bars are provided at their bases with jaws projecting toward the counterpart suspending bars respectively.

[0006]

[Action]

 In the first invention, the pair of hanging bars are tilted outward around the supporting shaft, both hook-type hanging brackets are lowered between the pair of hanging bars, and then each hanging bar is turned up to raise the hanging brackets. Can be hooked on both hooks. When hoisting in this way, the hoisting jig does not rotate between the two hook-type hoists of the crane, so the center of rocking of the hoisted load moves to the equalizer sheave just below the hoisting drum of the crane, and the rocking radius is long. Become Therefore, the amplitude angle of the wire cable at the beginning of hoisting by the crane decreases significantly. That is, the inclination of the suspended load is reduced. Further, since the pair of suspending bars are arranged in the longitudinal direction of the suspended load, there is an advantage that the swinging in the longitudinal direction which causes the overflow of the molten steel is suppressed. Furthermore, since the pair of suspension bars, the hook-shaped suspension fittings of the crane, and the suspension jig main body act as a four-point link mechanism, the stationary angle of the suspended load after the shaking stops is also small.

In the second invention, when the both hook-type hanging metal fittings are lowered between the preliminarily opened hanging ties, the bottom surface of the hanging metal fitting comes into contact with the jaw. Therefore, the pair of hanging bars are turned inward by the weight of the hanging bracket, and the hanging bar is hooked on both hooks of the hanging bracket. Therefore, the latching work can be semi-automated.

[0008]

【Example】

 Next, the hanging jig of the present invention will be described with reference to the drawings. As shown in FIG. 1, the hanging jig A of the present embodiment is a tundish hanging jig, and is hung on a main body 1 having a substantially X-shaped plan and a tip lower surface of each branch beam 2 of the main body 1. It is composed of four hooks 3 that can be lowered and a pair of suspension bars 4 and 4 provided on the central upper surface of the main body 1. The number of hooks 3 may be two depending on the type of suspended load. The main body 1 is a welded structure of steel plates and is substantially the same as a conventional hanging jig. It should be noted that the substantially X-shaped planar shape is bilaterally symmetrical with respect to the longitudinal direction as shown in FIG. 2, but not symmetrical with respect to the width direction as shown in FIG. This is because it matches the shape of the tundish 5.

As shown in FIGS. 2 and 3, the hook 3 is rotated by a pin 9 to a U-shaped bar 8 which is rotatably connected by a pin 7 to a bracket 6 fixed to the rear surface of the branch beam 2 of the main body 1. Suspended freely. Due to the pins 7 and 9, the hook 3 does not rotate about the vertical axis, but it can swing about the horizontal axis in the front, rear, left and right directions. Further, as shown in FIG. 3, the lower part of the hook 3 is formed in a thin plate shape so that it can be hooked on the hanging pin 11 of the tundish 5.

As shown in FIG. 1, the suspension bars 4 are provided on the upper surface of the main body 1 so as to face each other with a space in the longitudinal direction. Each suspension bar 4 is supported by a pair of brackets 12, 12 fixed to the upper surface of the main body 1, and is rotatably supported by a support shaft 13 extending in the width direction of the main body 1. As shown in FIG. 3, each hanging bar 4 has two plates 15 and 15 connected to each other, and each plate 15 has an inner end as shown in FIG. 4 (toward the other side hanging bar). It is provided with a jaw 16 protruding to the inside and is formed in a substantially L shape. The upper ends of the plates 15 and 15 are connected by a suspension shaft 18, and the jaws 16 are also connected by a contact piece 19. As a result, the hanging bar 4 is formed in a rectangular frame shape (see FIG. 1). As shown in FIG. 2, the suspension shaft 18 is a member that is hung on each hook portion of both hook-type suspension fittings 17, which will be described later, and the jaw portion 16 is a member that abuts the lower surface of the suspension fitting 17. (See Figure 4). Further, since the hanging bar 4 has a frame-like shape, interference with the hanging bracket 17 does not occur even when the hanging hook 4 is hooked with the hanging bracket 17.

As shown in FIG. 2, a stopper 20 for determining an angle when the hanging bar 4 opens outward (shown by an imaginary line in FIG. 2) is provided on the rear side of the bracket 12 that supports the hanging bar 4. It is fixed. The angle when the suspension bar 4 is tilted inward is determined by the contact of the upper end of the suspension bar 4 or the jaw 16 with the top surface of the suspension jig body 1.

Next, with reference to FIGS. 4 to 7, a method of hooking both hook-type hanging fittings 17 on the hanging bar 4 of the hanging jig A will be described. Before hanging the hanging metal fitting 17, the pair of hanging bars 4 and 4 are opened to the outside as shown in FIG. 4, and the plate 15 is brought into contact with the stopper 20 and opened at a predetermined angle. In this state, when the hanging bracket 17 is lowered while inching into the pair of hanging bars 4 (direction of the arrow D), the hanging bars 4 have a frame shape, so that they do not interfere with the plate 15 and the hanging shaft 18 is fixed. It hits the contact piece 19 without hitting. When it is further lowered, the abutment piece 19 is pushed downward by the weight of the hanging metal fitting 17, as a result, a moment corresponding to the length of the jaw 16 acts in the direction of the arrow M, and finally the hanging bar is lifted. The whole 4 falls inward, and the suspension shaft 18 comes into contact with the surface of the shaft portion 17a of the suspension fitting 17 and stops as shown in FIG. From this state, as shown in FIG. 7, when the hanging metal fitting 17 is raised in the direction of the arrow U, each hook portion 17b of the hanging metal fitting 17 is hooked on the hanging shaft 18. At this time, the suspension hook 4 swings to some extent and stops at the most stable position.

As described above, the suspension bar 4 provided with the jaw 16 and the abutment piece 19 has an advantage that it can be hung semi-automatically on the suspension fitting 17 of the crane without requiring manual labor. The hanging metal fitting 17 once hooked only returns to the state shown in FIG. 6 when the hanging load is subsequently placed on the floor, and there is no danger of it coming off. That is, in this state, the contact piece 19 is pressed by the hanging metal fitting 17, so that the hanging bar 4 does not fall outside freely. When removing the hanging bar 4 from the hook portion 17b of the hanging bracket 17, pull each hanging bar 4 outward from the state shown in FIG. 6, open the hanging bar 4 as shown in FIG. 4, and then perform inching. It is better to lift the hanging bracket 17.

As shown in FIG. 4, if a wire rope or the like is connected to the protruding piece 21 on the outer side of the upper portion of the plate 15, when the hanging bar 4 is detached from the hanging bracket 17, the hanging bar 4 is removed from a position away from the hanging bracket 4. It is convenient because it can be pulled outward. After connecting the hanging bar 4 and the hanging bracket 17 by the above procedure, hook the hanging pin 11 of the tundish 5 on the hook 3 below the hanging jig A as shown in FIG. Can be lifted.

When the tundish 5 is hoisted by the crane 22 using the hoisting jig A of the present invention, for example, the center of gravity G 1 of the tundish 5 and the hoisting jig A combined from the perpendicular line passing through the wire rope 23 of the crane 22. If it is displaced by the distance b, the tundish 5 tends to tilt in the direction of arrow C. However, since the pair of suspension bars 4 and the double hook type suspension fitting 17 are hard to rotate relative to each other, the fulcrum of the inclination rises to the equalizer sheave 25 just below the hoisting drum 24 of the crane 22. Therefore, the swing radius R becomes long, and the tilt angle due to the initial center of gravity shift of the load at the time of lifting (the moment when the load leaves the floor) is much smaller than that of the conventional one that tilts at the hook. Become. For this reason, there is little shaking when the suspended load leaves the floor, and there is little movement of the molten metal in the tundish 5, so there is no overflow. Furthermore, even when the initial swaying is stopped and the center of gravity of the suspended load coincides with the vertical line passing through the wire rope 23, the suspension bars 4, 4, Since the 1 and the hanging bracket 17 constitute a 4-point link, the tilt angle of the main body 1 is smaller and the angle of the tundish 5 is smaller than in the case of the 1-point hanging.

If the spacing between the support shafts 13 of the bracket 12 supporting the suspension bars 4 and 4 is substantially the same as the spacing between the suspension shafts 18 and 18, the tilt angle of the suspended load at rest can be further reduced. However, it is advantageous to increase the distance between the support shafts 13 to a certain extent and to make the suspension bars 4 and 4 trapezoidal so that the swinging in the initial stage of the suspension is small and the suspension is fast and stable. Therefore, the interval between the support shafts 13 may be appropriately selected according to the size of the two hook-type suspension fittings 17 and the form of the suspended load.

The above embodiment has been described with reference to an example of a hanging jig for hanging a tundish in a continuous casting facility. However, the hanging jig of the present invention is not limited to the tundish, and the center of gravity of the hanging load is placed on the center of the hook of the crane. It can be used for various types of loads that are difficult to reach, and that have a moving part or fluidity in part of the load, and whose center of gravity changes. Further, in the above-mentioned embodiments, the hanging jig having the hanging bar provided with the collar portion and the contact piece has been described, but the present invention is not limited to this, for example, as shown in FIG. It may be a hanging jig provided with a hanging bar 4 having no flange and abutting pieces. Although this hanging jig requires manpower to close the hanging bar 4, the effect of inclination prevention shown in FIG. 8 is as effective as the hanging jig shown in FIG.

[0018]

[Effect of device]

 According to the hoisting jig of the first invention, the amplitude angle of the wire rope in the initial stage of hoisting by the crane becomes small, so that the inclination of the hoisting load becomes small. In addition, since the pair of suspension bars are arranged in the longitudinal direction of the suspended load, the longitudinal sway that causes overflow of molten steel or the like is suppressed. In addition, the angle of rest is also small when suspending after the shaking stops. According to the hanging jig of the second invention, the hanging bar can be hooked on the both-hook type hanging metal fittings without requiring any manpower.

[Brief description of drawings]

FIG. 1 is a perspective view of a hanging jig A according to an embodiment of the present invention.

2 is a front view of the hanging jig A. FIG.

3 is a side view of the hanging jig A. FIG.

FIG. 4 is a sectional view of a hanging bar 4 in the hanging jig.

FIG. 5 is a cross-sectional view showing a hooking operation of the hanging bar 4.

FIG. 6 is a cross-sectional view showing a hooking operation of the hanging bar 4.

FIG. 7 is a cross-sectional view showing a hooking operation of the hanging bar 4.

FIG. 8 is an explanatory view showing a usage state of the hanging jig A of the present invention.

9A and 9B are a state diagram (A) and a diagram (B) for explaining the swinging preventing action of the hanging jig A of the present invention.

FIG. 10 is a sectional view showing another embodiment of the suspension bar according to the present invention.

FIG. 11 is an explanatory view of a usage state of a conventional hanging jig.

[Explanation of symbols]

A hanging jig 1 body
3 Hook 4 Hanging Bar 5 Tundish
12 Bracket 13 Spindle 15 Plate
16 Jaw 17 Both hook type hanging bracket 18 Hanging shaft
19 Contact piece

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Creator Eiji Hino 5-2 Sokai-cho, Niihama-shi, Ehime Sumitomo Heavy Industries Machinery Co., Ltd. Niihama Works

Claims (2)

[Scope of utility model registration request] 1. At least two hooks mounted at intervals on the lower surface of the hanging jig main body, and on the upper surface of the hanging jig main body facing each other at intervals and one hook. A pair of hanging bars provided at positions that can be hooked on the hooks of the hook-type hanging metal fitting, and the pair of hanging bars are provided around the two spindles parallel to each other provided on the upper surface of the jig body. A hanging jig, which is rotatably supported by a shaft. 2. The hanging jig according to claim 1, wherein the bases of the pair of hanging bars are provided with jaws projecting toward the mating hanging bars, respectively.