JPH02134470A - Method and device for fastening of large bore flange - Google Patents

Abstract

PURPOSE:To make opening and shutting of a lid and fastening thereof by supporting an actuator by a pin rotatably on the body of a vacuum vessel, and moving a fastening arm with expansion/contraction of this actuator following a specified locus of a guide provided at a supporting member on the vacuum vessel side. CONSTITUTION:When an actuator 6 advance (elongates), a stationary pin 8 slides a guide 9, and one-turn motion in sliding is given by a pin 10 and a guide 11. If these guides 9, 11 to guide the stationary pin 8 following a certain locus are determined upon assumption of the moving position of a fastening arm previously, opening and shutting of a lid flange 4 and its fastening can be made automatically by repeating fore-and-aft motions of the actuator 6 (expansion and contraction) under remote control.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for tightening a flange, and particularly to a method and apparatus for tightening a flange at an opening/closing point provided on a large-diameter container, and a 5I
This is related to tIi.

[Conventional technology]

Previously, it was a big I! In the case of the Ii device as well, a shakoman-type tightening device was used in which the flange was manually tightened, similar to the small device. In the case of small equipment, there were no problems with the above tightening device. ! ! In the case of equipment, automation of the tightening device was desired. Note that Japanese Patent Application Laid-Open No. 62-20970 is cited as a related device of this type.

[Problem to be solved by the invention]

The above conventional technology does not take into consideration the automation of the tightening device, and because it is all done manually, there is a loss of time for the worker to reach the place where the tightening work is performed, and there is no need to ensure safety during work. there were.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and apparatus for tightening large-diameter flanges in which the tightening of large-diameter flanges is completely automated in order to solve the above problem.

[Means to solve the problem]

In order to achieve the above objective, a guide with a predetermined trajectory is provided on the support member on the vacuum vessel side, and a guide with a long hole is provided on the tightening arm connected to the actuator side, so that it can be rotated on the vacuum vessel body. The tightening arm is operated along a predetermined trajectory of the guide by the expansion and contraction action of the actuator supported by the bottle, thereby opening, closing and tightening the lid.

[For production]

The bottle on the tightening arm side moves along the guide of the support member on the vacuum container side, and the long guide on the tightening arm side moves the bottle provided on the support member of the vacuum container, and the long guide on the tightening arm side moves along the guide of the support member on the vacuum container side.
f8e The relative relationship between the two guides and the tightening arm and the bottle,
Guided by the telescoping action of the actuator, the tightening arm is always held at three points. Therefore, even if the power source of the actuator should disappear, the tightening arm can always maintain the position at the time the power source disappeared.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 111 is a view of the fastening portion of the large-diameter flange of the large-sized vacuum container in a tightened state, and FIG. 2 is a view of the fastening portion in an open state.

In the figure, the large vacuum container has a main body part l and an opening/closing part I12.
and torso s7 lunge 3.11 parts 7 lashes 4.

A support member 5, one arm, and an actuator 6 are attached to the main body trunk l, and a tightening arm 7 is connected to the tip of the actuator 6 by a fixing pin 8.

The support member 5 is provided with a guide 9 and a bottle 10 for guiding the fixed bottle 8 along a predetermined trajectory, and the tightening arm is provided with a guide 11 having an elongated hole.

The screw 10 provided on the support S material 5 is connected to the tightening arm 7.
The support member 5 and the tightening arm 7 are connected to each other by passing through the long hole guide U.

The tightening arm 7 and the actuator 6 are also connected to the support member 5 by the fixed pin 8, and are always connected at three points (b! The device as a whole can be stabilized in a constantly held position. (The actuator 6 has a function to maintain the position at the time the power source disappears when the power source disappears.) Next, when opening the opening/closing lid 2, the tightening arm 7 is moved from the position shown in Fig. 1. fJ2 figure digit L1! You need to move. Further, when closing the opening/closing 112, it is necessary to apply an initial tightening force to the flange at the position shown in Fig. 131.

When moving the tightening arm 7 from the position shown in FIG. 1 to the position shown in FIG. Exercise is given. Therefore, if the shape of the guides 9 and 11 that guide the fixed bottle 8 along a predetermined trajectory is determined based on the moving position of the tightening arm 7 during feeding, the tightening can be performed by moving the actuator 6 forward and backward (extending and contracting action). The attached arm 7 can be fixed at any position.

When applying a tightening force to the flange 4 of the lid part 7, the actuator 6 retreats at position 15, and a guide length corresponding to the stroke required for tightening is provided in the support member 5 in parallel to the tightening direction. Therefore, the output of the actuator 6 can be directly applied to the IILs blank 4 through the tightening arm 7.

By repeating the above operations by remote control, it is possible to open and close the tightening device and to tighten seven lunges by moving one actuator forward and backward (expanding and contracting action).

According to this embodiment, it is possible to automatically open/close and tighten the tightening device, and it is also possible to reduce the number of actuators. This has the effect of reducing the number of actuators and simplifying the operation control circuit.

〔Effect of the invention〕

According to the present invention, since the opening/closing and tightening of the tightening position gt can be performed automatically with one actuator, there are effects such as improved work efficiency and ensuring work safety.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a seven-lunge cotton tightening device according to an embodiment of the present invention in a tightened state, and FIG. 2 is a cross-sectional view showing the tightening device of FIG. 1 in an open state.

Claims (1)

[Claims] 1. In a method for tightening a large-diameter flange, an actuator, a guide that guides the actuator along a predetermined trajectory, and a link mechanism that engages the guide are used to expand and contract the actuator. A method for tightening a large diameter flange, characterized by operating a link mechanism to open/close and tighten a tightening device. 2. In a large-diameter flange tightening device, there is an actuator rotatably supported on the container body, a tightening arm that moves by the expansion and contraction action of the actuator, and a support member on the container body side that guides the actuator along a predetermined trajectory. 1. A tightening device for a large diameter flange, characterized in that the actuator, the guide, and the tightening arm are connected to each other so as to operate the tightening arm along a predetermined trajectory of the guide.