JPS6019684A - Suspension supporter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a device that performs hoisting work by hooking a trunnion shaft of an object to be lifted from a hanging beam.

[Background of the invention]

When lifting a cast pot at a steel mill, a single-hanging hook is hooked onto the trunnion shaft attached to the cast pot, and a hanging beam supporting the hook is used to lift the cast pot using a dollar crane. The lifted cast pot is lowered to its destination by a dollar crane, but at this time the cast pot touches the floor (
This had the disadvantage that the hook easily came off the trunnion shaft, and once it came off, it was time-consuming to re-lift the casting pot. Also, knowing that the hook is caught on the trunnion shaft is
This is a necessary condition for automating the folding process, but it has been difficult to confirm in the past.

[Purpose of the invention]

An object of the present invention is to ensure that the hook is not removed from the trunnion shaft and that the condition of the hook is checked.

[Summary of the invention]

The present invention provides a lifting device U that hooks a trunnion shaft attached to an object to be lifted from a lifting beam supported so as to be freely raised and lowered, and a pair of support plates attached to the hanging beam so as to be movable forward and backward with respect to the M trunnion shaft. , bait record support pu 1/
- a hook opening in the form of a closed loop in the hole, and a drive device for moving the support plate forward and backward, which is installed on the suspension beam;
The above-mentioned hook is arranged such that one end faces the hole, and the above-mentioned catch is attached to the NFF support plate so as to be freely rotatable in a direction perpendicular to the opening surface of the hole, and the above-mentioned catch is arranged such that the rotational movement of the striker can be detected. and a detector installed on the support plate, the trunnion is hooked on the closed loop opening, so that the trunnion can be dislodged (and the trunnion shaft that has entered the opening is attached to the striker). When this happens, the striker moves, and this movement activates the detector, which can detect the state of engagement between the support plate and the trunnion shaft.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

As shown in Fig. 1, the configuration of this embodiment is as follows:
It has a bilaterally symmetrical structure.

A rope sheep 10 is freely rotatable on a shaft 13 on the hanging beam 1, and a hoisting rope 14 of a one-dollar crane is passed around the rope sheep 10.

This hoisting rope 14 is hoisted up and down by a winch of a ladle crane, so that the hanging beam 1 can be raised and lowered.

The hanging beam 1 has an upper support plate 3 and a lower support plate 4.
A support plate consisting of is attached. Specifically, the middle part of the upper support plate 3 is attached to the suspension beam 1 by a shaft 5 so that it can rotate freely in the left and right direction in FIG. At 15, it is attached so that it can rotate freely in the left and right direction as shown in Fig. 2.

A closed loop opening 16 is opened in the lower part of the lower support plate 4, as shown in FIG.

The upper end of the upper support plate 3 protrudes above the suspension beam 1, and a horizontal electric cylinder device 6 adopted as a forward/backward movement drive device is suspended at the upper end so that the telescopic rond ends face each other with a gap 17. Installed on beam 1.

・ 3 ・ 7 is a casting pot which is an object to be lifted, and horizontal trunnion shafts 18 are fixed to both left and right sides of the casting pot 7 .

This trunnion shaft 18 has a collar portion 19 at its tip.

A limit switch 12 employed as a detector is fixed to the side surface of the lower support plate 4, as shown in FIG. The striker 8, whose upper end is in contact with the switch lever of the limit switch 12, has a shaft 9 in the middle and can freely rotate left and right when attached to the bracket.

The lower part of this striker 8 faces the opening 16 and projects laterally of the lower support plate 4. Further, a portion of the striker 8 above the shaft 9 and the lower support plate 4 are connected by a coiled spring 11.

In this embodiment, the operation of lifting up the casting pot 7 is performed as follows.

First, the telescopic rod of the electric cylinder device 6 is extended to push the upper end of the upper support plate 3 to the right side in FIG. Due to this pushing action, both support plates 3.4 are tilted by an angle α to the left in FIG. The casting pot 7 placed on the floor is lowered upward.

Next, by retracting the telescoping rod of the electric cylinder device ii6, the telescoping rod is separated from the upper end of the upper support plate 3 to create a gap 17. In this way, both the upper and lower support plates 3, 4 become vertical as shown by solid lines in FIG. 1, and the trunnion shaft 18 passes through the opening 16. In this way, when the trunnion shaft +8 passes through the opening 16, the collar 19
The lower part of the striker 8 is pushed to the left in FIG. 3, and the striker 8 rotates around the shaft 9. For this purpose,
The upper end of the rotating striker 8 pushes down the switch lever of the limit switch, giving a switching action to the limit switch 12. This limit switch is implemented, for example, by using a circuit (not shown) that interlocks the indicator lamps in the driver's cab of the crane to turn on the indicator lamps. The operator of the ladle crane, who visually observed this lighting, uses a winch to wind up the hoisting rope 14 and raise the hanging beam 1. As the hanging beam 1 rises, the trunnion shaft 18 is caught on the lower surface of the opening 16, and the casting pot 7 is lifted up.

Thereafter, the suspended cast pot 7 is transported to the destination point by a crane. During transport, the support plates 1.3, 4 swing around the axis 5.15, so that no undue bending forces are applied to the support plate 3.4. Me, even if the upper support plate 3 swings, since there is a gap 17, the swinging force will not act on the electric cylinder device 6 side, and an unreasonable condition will not be caused, so it is safe.

Next, in order to place the casting pot 7 on the floor at the destination point, the hoisting rope 14 is let out from the winch of the ladle crane, the hanging beam 1 is lowered, the casting pot 7 is placed on the floor, and the hanging beam 1
continues to descend. Then, as shown in FIG.
The lowering of the upper and lower support plates 3 and 4 is stopped and the electric cylinder device 6 is used to tilt both the upper and lower support plates 3 and 4 at an angle α. In this way, the opening I6 of the lower support plate 4 is removed from the trunnion shaft 18. In this state, the spring 11 pushes the 42 part of the striker 8, so the striker 8 comes off from the switch lever of the limit switch 12, the indicator lamp goes out, and the support plate 4 comes off the trunnion shaft 18. I can know.

Also, when it is necessary to re-lift the casting pot 7.

Without tilting the support plate 3.4 using the electric cylinder M6, when the casting pot 7 reaches the floor, the suspension beam 1
stop the descent. In this way, as shown in FIG. 2, there is no gap for the trunnion shaft 18 to come off from the lower support plate 4 to the left and right in FIG.
Accidents that deviate from 6 can be prevented. Further, dislodgement in the left-right direction in FIG. 3 is prevented by the collar portion 19 catching on the lower support plate 4 in the horizontal direction. This brim part 1
9 with ease of being caught on the lower support plate 4 in the horizontal direction.

In order to facilitate the insertion and removal of the trunnion shaft 18 into and out of the opening 16, the opening 16 is preferably shaped to be wide at the top and narrow at the bottom, as shown in FIG. In addition, by using the force of the spring 11 to tightly hold the collar 19 between the striker 8 and the lower support plate 4, it is possible to prevent the opening 16 from coming off the trunnion shaft 18 of the cast pot 7 that has landed on the floor. .

7. In this case, it is necessary to set the strength of the spring 11 in such a way that it simply generates the force of the weight that rotates the striker 8.

〔Effect of the invention〕

As described above, according to the present invention, the hook does not require direct visual inspection of the part (it is possible to check the working status reliably, and it also prevents the support plate from coming off from the trunnion shaft when re-lifting is required). The effect is that it can be achieved reliably.

[Brief explanation of drawings]

@ Figure 1 is an elevational view showing the left half of the device according to an embodiment of the present invention (due to the left-right symmetrical configuration), Figure 2 is a left side view of Figure 1, and Figure 3 is Figure 1. FIG. 1... Hanging beam, 3... Upper support plate, 4... Lower branch plate, 5, 9, 13, 1
5... shaft, 6... electric cylinder device, 7... casting pot, 8... striker,
10... Rope sheep, limit switch for recognition, 14... Hoisting rope, 16...
...Opening, 17...Gap, 18...
Trunnion shaft, 19...Tsubabe agent Patent attorney Akio Takahashi・8・

Claims (1)

[Claims] 1. In a lifting device that hooks a trunnion shaft attached to an object to be lifted from a lifting beam supported so as to be freely raised and lowered, a pair of support plates attached to the hanging beam so as to be movable forward and backward with respect to the trunnion shaft; A hook opening in a closed loop shape on the plate has a hole, a driving device for moving the support plate forward and backward installed on the suspension beam, and one end of the hook is arranged to face the hole, and the hook is connected to the support plate through the hole. What is claimed is: 1. A suspension support device comprising: a striker attached to be freely rotatable in a direction perpendicular to an opening surface; and a detector installed on the support plate in a position capable of detecting rotational movement of the striker.