JPH0485296A - Device fixing mechanism - Google Patents

Abstract

PURPOSE:To simplify setting, fixing, unfixing and removing by moving a moving sleeve downward by spring tension, and fitting a lock lever into an engaging hole of a pin to be fixed associated with the moving lever, when a hook of a manipulator crane is unhooked. CONSTITUTION:After a device 3 is conveyed onto a setting base 1, a guide hole 6 of the device 3 is position-aligned, and the device 3 is lowered down and set up by bringing its lower surface into contact with the setting base 1. Under this condition, when a hook 30 of a manipulator crane is unhooked from a hanging metal fixture 19, a moving sleeve 15 is moved downward by tension of a spring 18 and stopped by hitting a stopper 23. By this movement, a pin-connected lock lever 21 is turned so as to approach the axial center of a fixed sleeve 11 by a link 17 which is almost horizontally placed in a condition that the moving sleeve 15 is stopped by hitting the stopper 23, and the lock lever 21 is almost vertically placed to fit its folded upper end part into an engaging hole 22 of the pin 2.

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention is applicable to installation locations of equipment in environments such as nuclear power related facilities where humans cannot directly work due to radioactive contamination or radiation exposure. This invention relates to a mechanism that simplifies loading/fixing, unfixing/exporting.

(Conventional technology) Nuclear-related facilities have environments where there is a risk of radioactive contamination and radiation exposure, and humans cannot normally work there directly, so automated equipment eliminates the risk of radiation exposure. Such equipment also requires regular maintenance, and equipment that handles radioactive materials installed and used within facilities cannot be directly replaced by humans. Therefore, the work will be carried out using manipulators and cranes. However, these manipulators and cranes can only perform simple tasks, so replacement tasks that could easily be done by humans not only take time, but are sometimes impossible.

Therefore, conventionally, as shown in Fig. 6(a), (b), and (c), a manipulator or a crane is used to suspend the conveyed object through a hook ■ attached to the conveyed object ■,
Using the pin (■) provided above as a guide, align the 60 of the conveyed object 0 with it and hang it down. Thereafter, the lever (2) with a locking mechanism is operated to press down and fix the top surface of the conveyed object (2). Unfixing and transporting were performed in the reverse order of the above.

(Problems to be Solved by the Invention) When loading and unloading using a manipulator or crane, it is desirable that the operations performed be the minimum necessary. However, in the conventional work, two operations, ie, installation to a predetermined position, fixing, and unfixing to lifting, are required independently, which not only takes time but also poses a risk of incorrect fixing operation.

Therefore, the present invention solves the above problems and aims to realize an equipment fixing mechanism that can simplify the installation, fixation, unfixing, and removal of equipment installed in a nuclear facility in a predetermined position. That is also the purpose of the invention.

[Structure of the invention]

(Means for Solving the Problems) The device fixing mechanism of the present invention has a cylindrical shape having a pin protruding from a mounting base on which the device is installed for positioning, and a guide hole in the center into which the pin smoothly fits. A fixing sleeve has flanges at both ends and is fixed in contact with the top surface of the device so that the guide hole and the guide hole drilled in the device are concentric, and a short sleeve is slidably fitted onto the cylindrical top of the fixing sleeve. A movable device having a cylindrical shape, which is applied with a downward spring force by a spring interposed between its upper end surface and the lower surface of the upper flange of the fixed sleeve, and has a hanging fitting whose end is joined at a position symmetrical to the center of the cylinder. a sleeve, a pair of rectangular notches extending from near the upper end of the sleeve to the lower end, each formed at a symmetrical position with respect to the cylindrical center of the movable sleeve away from the hanging fitting attachment portion; and a pair of rectangular notches provided in the upper part of each notch a link whose upper end is pivotally supported by the shaft of the movable sleeve, and which are aligned in the circumferential direction with each of the notches of the movable sleeve and at the same level as the lower end of the movable sleeve with the upper end in contact with the lower surface of the upper flange of the fixed sleeve. A pair of rectangular windows are formed in the cylinder of the fixed sleeve over a required length downward from the position, and the lower end is pivotally supported by a tangential shaft provided at the bottom of each window, and the fixed sleeve axis a pair of lock levers, the upper end portions of which are bent toward the lower end portions of the respective links, and the tips of the upper end portions are shaped to fit into engagement holes formed in the side surfaces of the pins; an engagement hole formed in a side surface of the pin and positioned so that the tips of the lock levers fit into each other when the lower surface of the device is in contact with the installation base;
A stopper protruding from the cylindrical outer surface of the fixed sleeve is positioned such that when the tip of the lock lever is fitted into each engagement hole, the lower end surface of the movable sleeve comes into contact and stops the downward movement of the movable sleeve. It is characterized by having the following.

(Function) In the device fixing mechanism of the present invention, when the device is suspended and transported via the hanging fitting by a manipulator or crane, the movable sleeve overcomes the spring force and comes into contact with the lower surface of the upper flange of the fixed sleeve, Supports the weight of the equipment through the fixed sleeve.

The lock lever is moved away from the fixed sleeve axis by the action of the link pivotally supported by the movable sleeve, and the tip thereof is located outside the guide hole.

After being transported onto the installation stand, align the guide holes of the equipment with the pins of the installation stand, and lower the equipment gently until the lower surface of the equipment is in contact with the installation stand. When the manipulator and crane hooks are removed from the hanging fixture in this state, the movable sleeve moves downward due to the spring force and stops when it hits the stopper. By this movement, the link rotates the pin-coupled lock lever closer to the fixed sleeve axis, and when the movable sleeve hits the stopper and stops,
The link becomes almost horizontal, the lock lever becomes almost vertical, and its bent upper end fits into the engagement hole of the pin.

Since the movable sleeve is pressed downward by a spring, the lock lever will fit into the engagement hole of the pin and will not loosen, preventing the device from moving upward and automatically fixing it just by installing it. will be carried out.

Use a manipulator when removing the device from the installation stand.

When the hook of the crane is hooked onto the lifting fitting and pulled up, the lifting fitting moves the moving sleeve upward.

As a result, the locking lever is disengaged from the engagement hole of the pin, and the moving sleeve abuts against the lower surface of the upper flange of the fixed sleeve, causing the device to move away from the mounting base and begin to rise. At this time, since the lock lever is separated outward from the guide hole, the fixing sleeve and the device can be pulled out from the pin without any interference. After that, it is lifted up to an appropriate height and transported. In this way, by simply pulling up the device through the fixing mechanism of the present invention, the fixation between the device and the installation base is automatically released, and the device can be removed and further transported.

(Example) Hereinafter, the present invention will be described in detail based on the example shown in the drawings.

FIGS. 1(a) and 1(b) show a device fixing mechanism according to an embodiment of the present invention. A mounting base (2) is provided with a pin (2) at a predetermined position. The device to be installed (■) is provided with a guide hole (■) into which the pin (■) smoothly fits. Furthermore, the device (2) has a cylindrical shape with a guide hole (12) in the center into which the pin (2) smoothly fits, and flanges (13) at both ends thereof.

A fixing sleeve (11) having a fixing sleeve (14) is fixed in contact with the upper surface of the device (1) with its guide hole (12) concentrically with the guide hole (2) of the device (2).

A movable sleeve (15) having a short cylindrical shape is fitted onto the cylindrical upper part of the fixed sleeve (11) so as to be slidable in the axial direction. This moving sleeve (15) is a fixed sleeve (
A downward spring force is applied by a spring (18) interposed between the upper flange (13) of the upper flange (11) and the lower surface of the upper flange (13), and a hanging fitting (19) is joined at its end in a position symmetrical to the center of the cylinder. It is provided. Furthermore, rectangular notches (16) reaching from near the upper end of the sleeve to the lower end are formed at symmetrical positions of the movable sleeve (15) with respect to the cylindrical center, away from the mounting portion of the hanging fitting (19).

A link (17) is provided with its upper end pivotally supported on a tangential axis provided at the top of the notch (16).

In addition, a movable sleeve (
15) The required length downward from the same level as the lower end of the movable sleeve (15) with the pair of notches (16) aligned in the circumferential direction and the upper end in contact with the lower surface of the fixed sleeve upper flange (13). A pair of rectangular windows (20) are formed that extend across the entire length. And each window (
20) A lock lever (21) is provided, the lower end of which is supported by a tangential shaft provided at the bottom, and the upper end bent toward the axis of the fixed sleeve is a link (17).
It is connected to the lower end with a pin, and the tip of this upper end is connected with a pin.
It has a shape that fits into an engagement hole (22) formed on the side surface.

Furthermore, the tip of the lock lever (21) is positioned on the side surface of the pin so that the tip of the lock lever (21) fits into it with the lower surface of the device in contact with the installation base, and the tip of the lock lever (21) is rotated by rotation of the lock lever (21). An engagement hole (22) having a curved surface that follows the movement is formed. Further, the lock lever (21) is positioned such that the lower end surface of the movable sleeve (15) that has moved downward comes into contact with the cylindrical outer surface of the fixed sleeve (11) and stops the movement. Stopper (23
) is provided protruding from the cylindrical outer surface of the fixed sleeve (11).

In the equipment fixing mechanism of the embodiment of the present invention configured as described above, the hanging fitting (
19), the movable sleeve (I5) overcomes the spring force of the spring (18) and comes into contact with the lower surface of the upper flange (I3) of the fixed sleeve (11), fixing it. Supports the weight of the device (2) via the sleeve (11). Then, the lock lever (2I) moves away from the axis of the fixed sleeve (11) due to the action of the link (17) that is pivotally supported by the movable sleeve (15), and the tip of the lock lever (2I) moves away from the axis of the fixed sleeve (11).
12) (Fig. 1 (a), (b)
)).

After being transported onto the installation stand ω, attach the equipment to the pins of the installation stand ω.
Align the guide holes (■) and lower the equipment (3) gently so that the lower surface of the equipment (3) is in contact with the installation base (ω) and install it. When the hook (30) of the manipulator and crane is removed from the hanging fitting (19) in this state, the movable sleeve (15) moves downward by the spring force of the spring (18), and the stopper (23)
) and stops. Due to this movement, the link (17) rotated the pin-coupled lock lever (21) so as to approach the axis of the fixed sleeve (11), and the movable sleeve (15) hit the stopper (23) and stopped. In this state, the link (17) is almost horizontal and the lock lever (
21) becomes almost vertical, and its bent upper end fits into the engagement hole (22) of pin (Fig. 2).

In this state, the moving sleeve (15) is
The lock lever is pressed downward by
(21) fits into the engagement hole (22) of the pin (2) and does not loosen, preventing the device (2) from moving upward, and is automatically fixed just by installing it.

When removing the device from the installation stand, use a manipulator,
When the hook (30) of the crane is hooked onto the hanging fitting (19) and pulled up, the hanging fitting (19) moves to the moving sleeve (15).
move upward. As a result, the opposite operation to that described above is performed, and the lock lever (21) is moved into the engagement hole (22) of the pin ■.
The movable sleeve (15) is removed from the fixed sleeve (1
1) When it comes into contact with the bottom surface of the upper flange (13), the equipment (3
) begins to rise away from the mounting base. At this time, since the lock lever (21) is spaced outward from the guide hole (12), the fixing sleeve (11) and the device (2) are pulled out from the pin (2) without any interference. After that, it is lifted up to an appropriate height and transported. In this way, by simply pulling up the device (3) through the fixing mechanism of the embodiment of the present invention, the fixing force 5 between the device 0 and the installation base (■) is automatically released, and the device (2) can be removed and further transported. can. Conversely, when installing the device (2), it can be automatically fixed to the installation base (2) by simply hanging it down at a predetermined position. Therefore, the work is simple and time is shortened. Furthermore, there is no fear of erroneous operation.

FIG. 3 shows an example in which two device fixing mechanisms of the present invention are used to hold device (1) on both sides thereof, and to carry it out, install it on installation stand (2), and remove it. Its action and effect are as explained in the above embodiment.

Next, a fourth embodiment of the present invention with a simplified mechanism will be described.
As shown in FIG. The difference from the embodiment in FIG. 1(aL(b)) is that the movable sleeve (15) and the lock lever (
21) is not connected by a link mechanism, and a spiral spring (24
). When installing equipment, a moving sleeve (
The lower end of 15) directly connects the lock lever (21) to the engagement hole (2
2), the contact surfaces of the lower end of the moving sleeve (15) and the upper end of the lock lever (21) are set at angles of attack so as to perform a squeezing operation in the direction of fitting into the lock lever (21). Figure 4 shows the hanging fittings (1
9), and Figure 5 shows the state in which it is suspended through the
The movable sleeve (15), which became free after the device ■ contacts the installation base ■, moves downward, and the lock lever (21) fits into the engagement hole (22) of the pin ■, fixing it. It shows. The equipment fixing mechanism of this embodiment is also automatically fixed to the installation base ω simply by hanging it in a predetermined position, and can be automatically released and removed by simply lifting it up. Figure 1 (a).

This is equivalent to the embodiment (b). Further, since the link mechanism is omitted, the mechanism is simplified such that there is no need to form a notch in the movable sleeve (15).

〔Effect of the invention〕

As described in detail above, according to the present invention, a positioning pin protruding from the installation base and a flanged cylindrical shape having a guide hole into which the pin is inserted are arranged on the upper surface of the device concentrically with the guide hole drilled in the device. a fixed sleeve fixed to the fixed sleeve, a movable sleeve slidably fitted onto the upper part of the fixed sleeve, applied with a downward spring force, and having a hanging fitting attached thereto, and formed centrally symmetrically to the cylinder of the fixed sleeve. a pair of window portions, each having a lower end supported by a shaft in a tangential direction at the bottom of each window portion, and an upper end bent toward the cylindrical axis in an inverted shape, and the upper end is connected to the movable sleeve. A pair of lock levers connected by a link mechanism, and an engagement hole formed in a side surface of the pin and positioned so that the lock levers fit into the device when the lower surface of the device is in contact with the installation base. By realizing the equipment fixing mechanism, when the movable sleeve is lifted up through the fixing mechanism, the movable sleeve contacts the upper flange of the fixed sleeve and the lock lever retreats outward, and the device is lowered by aligning the guide hole with the pin. When the manipulator and crane hooks are removed from the hanging bracket after being placed against the installation base, the movable sleeve moves downward due to the spring force, and in conjunction with this, the lock lever fits into the engagement hole of the pin and is fixed. . When removing, lift the hanging bracket and the movable sleeve will return to its original position, and at the same time release the lock lever.
The device can be detached from the engagement hole and retreated outward to release the fixing, and then the device can be removed by lifting it up.6 According to the device fixing mechanism of the present invention, the device can be automatically installed simply by hanging it in a predetermined position. It is fixed to the stand and can be unfixed and removed just by lifting it up, making the work simple, reducing time and eliminating the risk of erroneous operation.

Therefore, it greatly contributes to expanding the range of application of equipment installation and removal work using manipulators and cranes in environments where there is a risk of radioactive contamination or exposure to radiation, and improving work efficiency.

[Brief explanation of drawings]

1(a) and 1(b) show a device fixing mechanism according to an embodiment of the present invention, FIG. 1(a) is a sectional view, and FIG. 1(b) is a view taken in the direction of the X arrow in FIG. 1(a). Fig. 2 is Fig. 1 (a), (b)
) is a cross-sectional view showing the installation and fixing state of the mechanism.
Fig. 4 is a sectional view showing another embodiment of the present invention, and Fig. 5 is a schematic diagram showing an example of the use of the mechanism in Fig.
Fig. 6(a) is a sectional view showing the installed and fixed state of the mechanism shown in the figure.
, (b), and (c) show the device fixing mechanism according to the prior art, and FIG. 6(a) shows the suspended state, and FIG. 6(b)
FIG. 6 is a schematic diagram showing an installed state, and FIG. 6(c) is a schematic diagram showing a fixed state. DESCRIPTION OF SYMBOLS 1... Installation stand, 3... Equipment, 11... Fixed sleeve, 13, 14... Flange. 16... Notch, 18... Spring, 20... Window. 22... Engagement hole, 24... Spiral spring. 2...Pin, 6...Guide hole, 12...Guide hole. 15...Moving sleeve, 17...Link, I9...Hanging fitting, 21...Lock lever 23...Stopper, Agent: Patent attorney Norio Ogo

Claims (1)

[Claims] a positioning pin protruding from the installation base; a cylindrical fixing sleeve having a guide hole into which the pin fits; a fixing sleeve having flanges at both ends; and fixed to the top surface of the device concentrically with the guide hole drilled in the device The fixed sleeve has a short cylindrical shape that is slidably fitted on the upper part of the cylinder, and a downward spring force is applied from the upper flange of the fixed sleeve, and the end is joined at a symmetrical position to the center of the cylinder, and a hanging fitting is attached. a movable sleeve, rectangular notches that are formed at symmetrical positions on the cylindrical center of the movable sleeve away from the hanging fitting attachment portion and reach from near the upper end of the sleeve to the lower end; and tangential direction provided at the top of each of the notches. a link whose upper end is pivotally supported by the shaft of the fixed sleeve, and a link which is aligned in the circumferential direction with each of the notches in the cylinder of the fixed sleeve and is at the same level as the lower end of the movable sleeve when in contact with the upper flange of the fixed sleeve. A rectangular window is formed over a required length downward from the position, and the lower end is supported by a tangential shaft provided at the bottom of each window, and the upper end is bent toward the axis of the fixed sleeve. and a lock lever formed on a side surface of the pin and positioned so that the tips of the lock levers fit into each other when the lower surface of the device is in contact with the installation base. The movable sleeve is positioned such that when the tip of the lock lever is fitted into each of the engagement holes, the lower end surface of the movable sleeve comes into contact and stops the downward movement of the movable sleeve, and protrudes from the cylindrical outer surface of the fixed sleeve. Equipment fixing mechanism equipped with a stopper provided.