JPS5852182A - Hanging jig - 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 The present invention is directed to
The nuclear fuel assemblies to be used are transported to the designated location of the reactor core or fuel storage sol, and the construction steel materials are transported to the construction site KJ.
This article relates to a hanging jig used for I-insertion.

Conventionally, as such a hanging tool, a hanging frame body is provided with a hanging hook that can freely engage and detach from the suspended object by swinging, and the hook is placed in the above-mentioned retaining posture and detaching posture. A device equipped with a fluid pressure cylinder for forcibly changing the swing is known, but in this case, although the posture of the hanging hook can be easily changed by pulp operation, the fluid pressure cylinder is In addition to this, many expensive parts such as pumps, pulp, and piping are required, and the cost is high, and it is difficult to maintain the structure between the hanging footer and the hanging part of the suspended object. Since the fluid pressure ν ring can be operated freely regardless of the condition 1, for example, it is possible to store 9 nuclear fuel assemblies in a predetermined location under the water surface of the fuel storage date μ, as shown in the example below. In cases where it is necessary to carry out hanging work at different intervals, such as when carrying out hanging work on the 9-day side, the above-mentioned hanging hook is used to suspend the suspended object. It is difficult to judge whether the hanging part is properly engaged or not, and there is a risk that the suspended object may fall unexpectedly due to rounding or transportation with an uncertain engagement.

In view of the above-mentioned circumstances, the present invention has the same operational advantages as the conventional hanging jig that utilizes a fluid pressure V9 meter, while also being able to significantly reduce costs. Even when it is necessary to suspend and transport an object by remote operation #Ii, this is to foster the point KF4 of ensuring that the object can be hung reliably and safely, and the suspension frame A hanging hook that can be attached to and detached from a movable suspended object by swinging and that can be rocked and biased in the engagement direction is attached to the body, and the hanging hook is attached to the above-mentioned engagement. a tenth locking mechanism that automatically locks in the position; a manual operating mechanism that releases the lock by the first locking mechanism and swings in the withdrawal direction against the urging force; The 80th lock mechanism automatically locks, and the lock by the 80th lock mechanism is automatically released when the hanging frame comes into contact with the hanging part of the suspended object in a normal position and posture. It is characterized by being equipped with a mechanism.

In other words, when attaching a jig to a part for hanging an object, the automatic lock release mechanism is only used when the hanging frame is installed in the correct position and posture relative to the part to be hung. The lock by the 20th lock mechanism is automatically released by the operation of 1, and the hanging hook is swung from the detached position to the retained position by the urging force, and at the same time, by the operation of the 1st lock mechanism. Since it is automatically locked in the above-mentioned engagement position, the hanging part of the hanging object may be hung for a while with uncertainty about the connection between the hanging hook and the hanging part of the hanging object, or the hanging hook may be disconnected in the middle of hanging. will not swing unexpectedly in the detachment direction, ensuring sufficient safety during hanging.Moreover, there is no need for any special operations on the above-mentioned mechanisms or hanging hooks. Even when removing the jig from the suspended object, a one-touch operation on the manual operating mechanism releases the lock by the first locking mechanism and switches the hanging hook to a detached position against the urging force. , l!, the first locking mechanism can automatically lock in the detached position.

Therefore, while it has the same operational advantages as a conventional suspension jig using a fluid pressure cylinder, each structure can be constructed using inexpensive parts such as links, rods, and cams. It is possible to significantly reduce production costs, and even if the suspended object needs to be suspended and transported by remote work, the suspended object can be reliably and safely prevented from falling unexpectedly. I was able to hang it.

Hereinafter, an embodiment of the present invention will be described based on the drawings. It consists of a pair of left and right vertical frame parts (IA), (IA) and a horizontal frame part (IB) fixedly connected between the upper ends of these parts. The left and right vertical frame portions 4 (IA) of the hanging frame (1),
(IA) Boiling water B1 is an example of an object to be suspended between
@It is possible to freely swing and switch between a posture that is aligned with the U-shaped hanging portion 1a+ of the fuel assembly prisoner used in a water-moderated reactor, and a posture that is separated from the 9th position to one side. , a first locking mechanism (which attaches the nine hanging hooks which are biased to swing in the engagement direction using their own weight and automatically locks the hanging hooks in the engagement position); 3) and this 70th
A locking mechanism (3) A manual operation mechanism (4) that releases the grip and swings in the detachment direction against the biasing force, and a third lock mechanism (11) that automatically locks in the detachment position. Also, the left and right vertical frame portions (IA)
, a guide #It61 formed on the lower side of (IA),
A mechanism ( 7).

Ninth, the horizontal frame portion (1B) of the hanging frame body (1) includes:
The suspension rod (9) having a threaded connection to the suspension wire 181 suspended from the crane floor and the front IId suspension hook (WImk) are moved in the lock display position in conjunction with the swing WImk in the direction of engagement. The lock display board (1 (I
In addition, a pair of left and right U-shaped handles -1Il are fixedly connected to each other via a connecting plate (11), and the lower groove portions of the guide grooves +151 and +61 are configured in a trumpet shape with the lower end thereof. However, the installation guide member has a substantially triangular shape in bottom view and has a light-spreading inclined guide surface (IIA) for the U-shaped hanging portion ia). A voice that sticks to In.

The first locking mechanism (3) constructs the left and right vertical frame portions bins Cl41 according to RIIF, and also connects one of the vertical frame portions (I
A) K A pivotably pivoted lever (at one end at 1 o'clock,
A locking pawl Oη capable of engaging is provided in series with the rectangular locking groove formed in the hanging hook, and the locking pawl Oη is connected via the swinging lever O@. A spring (III) is provided that biases in the engagement direction, so that the hanging is carried out by a hook (
2) swings to the retention position, the front=d locking pawl 0η is automatically engaged with the locking groove 1 by the biasing force of spring 1III, and the It is configured to lock in the matching position.

The manual operation mechanism (4) has a presser lobe-01 rotatably pivoted to the other end of the swing lever M for pressing and swinging the hanging hook (!) in the release direction, and A pair of upper and lower links @11° (2) are pivotally connected to the bracket fixed to the hanging rod (9) so as to be able to swing vertically.

An inverted υ-shaped operating member (2) is fixed to the upper end of the four tips, and a link is pivotally connected thereto. Further, the lower end of the pulling rod pivoted at the longitudinal center of the lower link is screwed into the cam crank pin rotatably pivoted to one end of the swing lever (lI). The spring 01 is interposed between the cam crank pin i and the m-th frame part (IB) at the outer circumference of the lifting rod.

Then, when the operating member is pulled up, the swing lever O is swung clockwise via the upper and lower links e and the lifting rod, and the locking pawl is lifted. The lowering hook (2) is disengaged from the locking groove 011, and the lock by the first locking mechanism (3) is released. At the same time, the presser roller/trout presses the end of the hanging hook downward, and the hanging hook is swung to the detached position against the force. (2) K is formed with a relief groove for preventing interference between the hook swinging in the detachment direction and the locking pawl 1+η.

The first locking mechanism (・) is connected to the one vertical frame portion (I
In A), a hook cam (2) that engages with the cam 4 integrally connected to the swing lever 116) to prevent the hanging hook (2) from swinging in the engagement direction is installed in the vJ period. The cam (c) is pivotally attached to yc so as to be swingable in the distance direction, and the hook cam (to) is attached between the hook cam (■) and the vertical frame portion (l^) as described above. A spring ■ is installed that biases the device to swing in the direction.

When the hanging hook (2) is in the locking position, the tip of the hooking cam is in contact with the arcuate cam surface of the cam (to), and these two do not engage. When the manual operation mechanism (4) is lifted up, the hooking cam wire is automatically engaged.

The lock automatic release mechanism (1) is constructed as follows.

Tanukichi, said one vertical frame part (lm) K% said guide groove m
, (@l is the nuclear fuel assembly (the U-shaped hanging part (Todoroki)
A lever (b) that detects when it is inserted in the correct position and posture by swinging upward, and a push-up plate pivotally connected to the free end of this sensing lever @O. Guide Ro-Two (Incorporated) which has a function of guiding the movement and holding the sensing lever at a predetermined sensing standby position by resisting the downward movement bias of its own weight through this push-up plate. At the same time, the upper end of the push-up plate is pivotally attached to the hook cam 4 of the No. The inclined cam surface (
The downward swinging of the butterfly with the 86-degree angle is prevented by contact with the bent piece (888) of the push-up plate (to), and the butterfly is in good condition and when the hanging jig is removed. , J of the sensing lever from the sensing position to the sensing position.
Lever landed upward from p-two at one o'clock
〇One end and the above-mentioned hanging display board (eye placket) are pivotally connected via a square rod, and the above-mentioned lever nofk end and the hanging hook (2) are screwed together so as to be expandable and fixed. The above-mentioned hanging rod is pivotally connected to the lock display plate in the horizontal direction in conjunction with the switching of the hook (2) to the 2-stranded position. The structure is configured to automatically switch between a lock display posture in which the user follows the screen and a non-display posture in which the user follows the vertical direction.

Therefore, the hanging jig configured as described above is installed at a predetermined location below the liquid level of the reactor core or fuel storage pool, and is lowered toward the U-shaped hanging portion (ml) of the fuel assembly (4). Just by touching the guide groove t61, the trumpet-shaped lower VSS of H
part and the mounting guide member I.

The automatic lock release mechanism (7) is attached to the U-shaped hanging portion 1al in a normal position and posture by the guide action of the inclined guide surface (lam) of 0 (18a) K). is fiflt&, the lock by the mechanism (6) is released, and the hanging hook (the hook swings by its own weight from the detached position to the engaged position, and the I!/lock mechanism) is activated. Hanging hook
At the same time as the hook is hooked, the lock display plate 11Q is automatically switched from the non-display position to the lock display position.

In addition, when removing the hanging jig, the manual operation mechanism (4) located below the liquid 1 from the work area such as a boule site or
When the operating member (2) is pulled up via a long release operation rod (not shown), the lock by the first locking mechanism (1) is released and at the same time the hanging hook (!) changes from the engaged position to the disengaged position. In conjunction with this, the lock display plate (l-) was switched from the lock display position to the non-display position, and the 20th lock mechanism (5) was activated to suspend the lock display board (!).
) is automatically locked in the disengaged position.

It should be noted that the determination of the position of the operating member and the determination of whether or not there is a lock-like lIK are necessary for nine days to side, etc.
Fit! In order to easily perform the operation from the ilI field, both of these 121. - is colored so that it can be clearly distinguished from other constituent members.

Further, the hanging hook (K) does not move in the detachment direction KJII only by the manual operation mechanism (4).
A locking member for emergency forced operation of the hook engagement is provided in succession.

Maku, mentioned above! ! In the example, a hanging jig for fuel assembly prisoners was explained, but the hanging jig in this case can also be used for other types of suspended objects such as construction steel, and 14 -K, remote production of hazardous substances that are likely to have an adverse effect on fuel assemblies and the human body, and various devices attached to them, etc. 11
11 is used as a hanging jig for hanging objects that need to be transported by hanging.

Additionally, a Springbo Jv111 type locking mechanism may be used as the locking mechanism il+ (Il), and in short, the shape, size, material, etc. It is best to set it appropriately depending on the hanging cropping conditions, etc.

[Brief explanation of the drawing]

The drawings illustrate the mode of dormitory installation of the hanging jig according to the present invention,
Figure 1 is a partially cutaway 4El#A, Figure 8 is a cross-sectional view taken along the I-fold line in Figure 1, and No. 8 is a cross-sectional view taken along the line I in Figure 1.
1 and 4 are cross-sectional views when the locking state shown in FIG. 2 is changed to the release state 111K, and FIG. 6 is a cross-sectional view when the locking state shown in FIG. 3 is changed to the release state 1mK. ill...--Suspension frame body, (2)...Suspension hook, (3)...70th hook mechanism, (4)
-...Manual operation mechanism, (6)...-No. 1 lock mechanism, (6)...Guide groove, tto+...
...Lock display board, 0 sai...Installation guide member,
G: Operation member.

Claims (1)

[Scope of Claims] (i) A hanging hook (!) attached to the hanging frame (1), which can be attached to and detached from the suspended object by swinging, and which is swing-biased in the engagement direction. ), and a first locking mechanism (s) that automatically locks the hanging hook (i) in the ItlilB engagement position and the first locking mechanism (3).
), and a manual operating mechanism (4) that swings in the detachment direction against the urging force;
A second locking mechanism (6) that automatically locks in the detached position
), and a mechanism that automatically releases the lock by the first locking mechanism (61K) when the hanging frame (1) contacts the hanging part of the suspended object in the normal position and posture. 1) A hanging jig is characterized in that it is equipped with the following: ■ Utilizes the weight of the hanging hook (the hanging hook C! is the swing biasing means in the phantom locking direction). The hanging jig according to claim 0. ■ The hanging frame (1) includes the hanging rod, the hook (
The patent claims that the lock display plate (equipped with a bell) is automatically switched to the working position in conjunction with the rocking in the engagement direction, and to the non-working position in conjunction with the movement in the disengaging direction. The hanging jig according to item 0 or item 0. ■ The hanging frame (1) is provided with a light-spreading mounting guide member ■ for the hanging object. The hanging jig according to any one of the scope items 0 to 0. ■ The operating member (2) of the manual operation mechanism 14) is provided protrudingly from the upper part of the hanging frame. Range @ (hanging jig according to any one of item 0 to item 0.