JPH0635732U - Flange fastening device - Google Patents

Abstract

(57) [Summary] (Modified) [Objective] The present invention relates to a device for automatically fastening flange portions such as an upper tank and a lower tank of a vacuum degassing tank in an environment subject to high heat. Even if there is, it is an object of the present invention to provide an automatic fastening device that can obtain a stable fastening force without reducing the sealing effect between the flanges. [Structure] A hook swinging roller 1 for swinging a hook 3, a hook for fastening a flange, a hook beam 4, a spherical bearing 5, and a hook up / down cylinder 6 are provided. It is possible to obtain a sealing effect by compressing the sealing material between the upper and lower flanges by the compressive force of the hook upper and lower cylinder driving device attached to the upper surface of the tank flange 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to, for example, a device for automatically fastening flange portions of a vacuum tank for steelmaking that receive high heat in an upper tank and a lower tank.

[0002]

[Prior art]

 The prior art as an automatic flange fastening device for holding a seal between flanges is described in Japanese Patent Application No. 4-14984 filed by the applicant of the present application, and this structure has a hook for swinging a hook. Composed of a rocking cylinder, a hook rocking ring, and a hook up / down cylinder for fastening the upper and lower flanges, and the compression force between the hook hanging on the lower surface of the lower tank and the hook up / down cylinder body mounted on the upper surface of the upper tank flange. This is a device that can obtain a sealing effect by compressing the sealing material between the upper and lower flanges.

[0003]

[Problems to be solved by the device]

 The conventional method is a complicated device in which a hook swing cylinder, a hook swing ring, and a hook up / down cylinder are separately provided, but the present invention uses only the hook up / down mechanism to swing the hook and move the hook up / down. It is to provide a simplified automatic flange fastening device capable of achieving the above and capable of obtaining a sufficient sealing effect.

[0004]

[Means for Solving the Problems]

 The present invention is intended to solve the above-mentioned problems. A hook beam is attached to one flange or a tank through hook moving means, and one end is swingably connected to the hook beam and the other end is the other. A plurality of hooks that come into contact with the flange of the hook and a hook swinging means that is fixed to the tank and that contacts the hooks and swings the hooks when the hook moving means is driven. It is a flange fastening device.

[0005]

According to the present invention, by retracting the rod of a hook moving cylinder, which is a hook moving means, the hook swinging means is activated and the lower end portion of the hook swings down and swings to "open". By pulling the rod out, the lower end of the hook oscillates "closed" and then rises to allow fastening between the upper and lower flanges. This allows the lower tank to be replaced by automatically fastening and releasing the upper and lower flanges without any human intervention.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to an embodiment with reference to the drawings. 1 is a front view of a flange fastening device of the present invention, FIG. 2 is a side view of a flange fastening device of the present invention, FIG. 3 is a plan view of a flange fastening device of the present invention, and FIG. 4 is a flange fastening device of the present invention. Fig. 5 is a detailed view of the hook swinging roller portion, Fig. 5 is a detailed view of the fall prevention roller portion of the flange fastening device of the present invention, Fig. 6 is another plan of the hook swinging mechanism of the flange fastening device of the present invention, and Fig. 7 is a vacuum. It is a front view which shows the whole tank.

In FIGS. 1, 2 and 3, a pair of hooks 3 are joined to a hook beam 4 by a pin, and the hook beam 4 is provided at the tip of the rod of a hook up / down cylinder 6 as a hook moving means. The spherical bearing 5 is joined by a pin, and the main body of the hook up / down cylinder 6 is fixed on the upper surface of the upper tank flange 7. In this case, of course, it may be fixed to the upper tank in the vicinity of the flange instead of the flange. The sealing material 9 is attached to the groove of the lower tank flange, and this attachment location may be either the upper tank flange 7 or the lower tank flange 8. In Fig. 3, the number of hooks 3 is sufficient if the number of conventional flanges and bolts is about the circumference of the flange. The number of hook up / down cylinders 6 attached depends on the size of the flange, but the upper tank flange 7 and the lower part About eight hooks are enough to exert the sealing ability of the sealing material 9 between the tank flanges 8 and to stably move the pair of hooks 3 up and down. The hook moving means may be a reciprocating electric cylinder other than the cylinder.

In FIG. 5, the fall prevention roller 13 attached to the hook beam 4 enables the vertical stroke of the hook up / down cylinder 6 to be guided, and the hook beam 4 does not fall out of the vacuum chamber iron shell 10 to the outside. I am trying.

In FIGS. 2 and 4, the hook swinging roller 1, which is a means for swinging the hook, is fixed to the vacuum chamber 10 side, and is set so as to come into contact with the upper lower surface portion of the hook 3. In the state where the upper tank flange 7 and the lower tank flange 8 are fastened, a gap is provided between the hook swinging roller 1 and the lower surface of the hook 3.

Because of the above-mentioned configuration, the following work procedure is used when removing the lower tank flange 8. During normal dismounting work, a special truck (not shown) is run under the lower tank 12 shown in FIG. 7 and stopped, and a special lifting device (not shown) equipped with a spring is raised to lower the lower tank 12. The lower tank is pushed up by this spring force. At this time, the flanges of the lower tank and the upper tank are in close contact with each other.

In this state, when the rod of the hook up / down cylinder 6 is pulled in, the hook beam 4 is first lowered, so that the lower surface of the hook 3 which is pinned to the hook beam 4 is lowered until it comes into contact with the hook swinging roller 1. By this operation, a clearance for rocking is formed between the lower surface of the lower tank flange 8 and the lower ends of the plurality of hooks 3.

When the rod of the hook up / down cylinder 6 is further pulled in to the stroke end, the hook 3 side to which the hook up / down cylinder 6 is attached descends with the hook swinging roller 1 contacting the lower surface of the hook 3 as a fulcrum. Therefore, the lower end of the hook 3 is opened to the outside of the vacuum chamber 10 from the lowered position of the lower surface of the lower chamber flange 8, and then stopped at the stroke end of the hook up / down cylinder 6. After that, the lower tank 12 can be removed. After this, the old lower tank 12 that has been removed is lowered by a dedicated lifting device (not shown), then transported by truck to a repair shop and replaced with a new one.

Next, when a new lower tank 12 is attached, the lower tank flange 8 is pressed against the upper tank flange 7 by using a dedicated elevating device (not shown) as in the removal operation. This dedicated lifting device (not shown) has a simple push-guide centering device (a general mechanism is sufficient for adjusting the stop position error of the trolley and the loading position error of the lower tank). Not specified because it can be supported) is provided. For this reason, the outer peripheral edge of the lower tank flange 8 can be centered so as to match the outer peripheral edge of the upper tank flange 7.

After that, by pulling out the rod of the hook up / down cylinder 6, the lower end of the hook 3 oscillates in the “closed” direction with respect to the lower surface of the lower tank flange 8 and then rises to lower the lower tank flange 8 The lower tank flange 8 can be pressed against the upper tank flange 7 by contacting the lower surface of the upper tank. In addition, the sealing material 9 ensures the seal between both flanges. Furthermore, as a measure against the uncertainty of the sealing effect due to thermal expansion, etc., if hydraulic pressure or spring force is always applied to the hook up / down cylinder 6 in the direction to fasten the flange, both flanges will open. Instead, it can always be a highly reliable facility. As a tightening mechanism against the thermal deformation of the lower tank flange 8 and the upper tank flange 7 due to the operation, the hook 3 can be fastened following the flange deformation by the spherical bearing 5 provided on the hook beam 4. It is possible to obtain a sufficient sealing effect.

Further, as an alternative of the hook swinging mechanism, the one as shown in FIG. 6 has the same operation and effect. If the guide plate 2 of the fall prevention roller 13 is processed as shown in the drawing, the hook is pulled up by the rod 6 of the up / down cylinder 6 so that the fall prevention roller 13 is guided by the guide plate 2 to support the spherical bearing 5 as a fulcrum. As a result, the hook beam 4 with the fall prevention roller 13 and the hook 3 attached thereto are opened to the outside of the vacuum chamber while their swinging is stopped by the hook stopper 14 of the hook beam 4. be able to.

[0016]

[Effect of device]

 By configuring the present invention as described above, the flange, which is equivalent to the conventional manual work, can be securely connected and automatically by remote work. Furthermore, since this device has the simplest configuration, it can fully function at a low price.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view showing an embodiment of the present invention.

FIG. 3 is a plan view showing an embodiment of the present invention.

FIG. 4 is a detailed view of a roller portion for swinging a hook showing an embodiment of the present invention.

FIG. 5 is a detailed view of a fall prevention roller portion showing an embodiment of the present invention.

FIG. 6 Alternative plan of hook swing mechanism

FIG. 7 is a schematic view of the entire vacuum chamber.

[Explanation of symbols]

 1 Hook oscillating roller 2 Guide plate 3 Hook 4 Hook beam 5 Spherical bearing 6 Hook up / down cylinder 7 Upper tank flange 8 Lower tank flange 9 Seal material 10 Vacuum tank iron skin 11 Upper tank 12 Lower tank 13 Fall prevention roller 14 Hook Stopper

Claims (1)

[Scope of utility model registration request] 1. A hook beam attached to one flange or a tank through a hook moving means, and a plurality of hook beams, one end of which is swingably connected to the hook beam and the other end of which is abutted against the other flange. A flange fastening device, comprising: a hook; and a hook swinging means that is fixed to the tank and contacts the hook to swing the hook when the hook moving means is driven.