JPH0221448Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a jig for transferring columnar objects such as nuclear fuel pellets.

[Technical background of the invention and its problems]

For example, in a nuclear fuel processing factory, cylindrical nuclear fuel pellets are loaded onto a tray with a V-shaped cross section and multiple rows of grooves and transported, and at a predetermined position, they are transferred to another tray that also has V grooves. Something like this is being done.

However, since a large number of the above-mentioned trays are generally used and they are used frequently, it is not practical to manufacture them with high precision from the viewpoint of cost and handling. Therefore, errors occur in the pitch, height, etc. of the V-grooves in each tray. Therefore, when transferring nuclear fuel pellets from the V-groove of one tray to the V-groove of another tray, if part of the V-groove on the side to be transferred is higher than the original V-groove, The edge of the nuclear fuel pellet gets caught in the step between the V grooves,
Nuclear fuel pellets may become defective or stop moving.

Therefore, as shown in FIGS. 5 and 6, a step is provided between the two so that the V-groove of the original tray 1 is higher than the V-groove of the tray 2 to which the nuclear fuel pellets are next transferred. There is. However, in FIGS. 5 and 6, nuclear fuel pellets 3 with a diameter of 10 mm and a length of 12 mm, for example, are placed in the first tray 1.
If a step of 2 mm or more is provided at the connecting end of the pellets 3 to the second tray 2, the frequency of the nuclear fuel pellets 3 toppling over during transfer will increase. Therefore, in order to reduce this frequency as much as possible, the grooves of the second tray 2 on the receiving side are made into a tangled shape, as shown in FIG.

However, even in this case, it is impossible to prevent overturning if the steps are large, and there is no point in moving the nuclear fuel pellets 3 in both directions. There are problems such as the need for means for correcting pitch errors.

[Purpose of invention]

In view of these points, the present invention allows columnar objects such as nuclear fuel pellets to be smoothly transferred from the grooves of one tray to the grooves of another tray, and also enables the transfer of columnar objects such as nuclear fuel pellets from the grooves of one tray to the grooves of the other tray. The purpose of the present invention is to obtain a transfer jig for columnar objects that can be transferred to

[Summary of the idea]

The present invention has an inclined surface whose upper surface descends sequentially from the center toward both front and rear ends, one end of which is inserted into a groove of a first tray for transferring a columnar object, and the other end a columnar object support rail for inserting and mounting the columnar object into the groove of a similar second tray; and guides disposed on both upper sides of the support rail to guide the side surfaces of the columnar object that is moved along the support rail. It is characterized by having a side plate. When the columnar object is moved along the groove of the first tray, the columnar object is transferred onto the columnar object support rail and is moved in the axial direction while being guided by the guide side plate. It rises along the inclined surface of the support rail, then descends and is smoothly transferred onto the groove of the second tray.

[Example of idea]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4.

In FIG. 1, reference numeral 10 indicates a first groove having a V groove.
This is a tray in which a large number of nuclear fuel pellets 11 are arranged on the V-groove of the first tray 10, and one end of the row of nuclear fuel pellets is pressed by a pusher (not shown) provided at one end of the tray. The nuclear fuel pellet can then be moved along the V-groove.

A second tray 12 is disposed at one end of the first tray 10 at a predetermined interval, and both trays 1
The axes of the V-grooves 0 and 12 are arranged on the same axis.

Incidentally, in the vicinity of the end of the second tray 12 facing the first tray 10, there is one end portion of a columnar object support rail 13 having an inclined surface whose upper surface descends sequentially from the center toward both the front and rear ends. The columnar object support rail 13 is pivotally connected via a horizontal shaft 14, and one end of the columnar object support rail 13 is placed between the V-groove of the second tray 12 and the lower surface of the columnar object transferred on the second tray 12. It is placed so as to be inserted into the cavity formed, and similarly, the other end is inserted and placed in the cavity formed between the groove of the first tray 10 and the lower surface of the columnar object. There is. Guide side plates 15 that extend parallel to the columnar object support rail 13 and guide both sides of the rows of nuclear fuel pellets 11 are connected to both upper sides of the columnar object support rail 13 via connecting members 16 (see Fig. 2). ).

The columnar object support rail 13 is attached to a U-shaped support member 17 so as to be movable up and down, and a tension spring 18 is interposed between the support member 17 and the columnar object support rail 13. On the other hand, the support member 17 is mounted on a shaft 20 that is moved up and down via a vertical drive mechanism 19.

Therefore, when transferring the nuclear fuel pellets 11 from the first tray 10 to the second tray 12,
By arranging both trays 10 and 12 so that their V-grooves are on the same line, and lowering the support member 17 by the vertical drive mechanism 19, the columnar object support rail 13 is aligned with the horizontal axis via the spring 18. 1
4, the free end side of the columnar object support rail 13 is pressed onto the V-groove of the first tray 10.

Therefore, when the end of the row of nuclear fuel pellets 11 arranged on the first tray 10 is pressed toward the second tray 12 by a pusher (not shown), the nuclear fuel pellets 11 are guided by the guide side plate 15. The columnar object support rail 13 successively comes into contact with the inclined part of the columnar object support rail 13 and is lifted up along the inclined surface, and is then lowered along the downwardly inclined surface on the opposite side.
is transferred onto the V-groove of the tray 12.

Therefore, even if there is a certain level of step between the first tray 10 and the second tray 12, the V-grooves of both will not fit into the columnar object support rail 13 having a mountain-shaped side surface. Therefore, the nuclear fuel pellets 11 do not need to pass through a sharp step between both trays, and the nuclear fuel pellets 11 smoothly move along the columnar object support rail 13 to the adjacent second tray 12. Translated above.

In the above embodiment, a jig for transferring between trays having a V-groove has been described, but when the jig has a letter-shaped groove as shown in FIG. 12
The tips of the columnar object support rails 22 may be inserted into the left and right spaces 21 formed between the two.

Further, in the above embodiment, one end of the columnar object support rail 22 was pivotally attached to one tray, but as shown in FIG. They can also be made independent of each other.

That is, the support member 23 of the columnar object support rail 13 has guide tubes 24 erected at the front and rear positions in the longitudinal direction of the columnar object support rail 13, and the trays 10, 12 are attached to both guide tubes 24.
A guide rod 25 protrudes downward from the bottom of the columnar object support rail 13, which is completely independent from the guide tube 2.
A tension spring 18 is interposed between the support member 23 and the columnar object support rail 13. The other points are completely the same as the first embodiment.

Therefore, if both ends of the columnar object support rail 13 in the front and rear directions are disposed on the V-grooves of the trays 10 and 12 arranged on the same line, and the support member 23 is pulled downward via the shaft 20, the tension Both ends of the columnar object support rail 13 are pressed and fixed onto the V-grooves of the trays 10 and 12, respectively, by the spring 18, and both the trays 10 and 12 are connected by the columnar object support rail 13.

Therefore, the nuclear fuel pellets 11 can be smoothly transferred from the first tray 10 onto the second tray 12 in exactly the same manner as in the previous embodiment. Moreover, even if the axes of the trays 10 and 12 adjacent to each other are shifted to some extent vertically or horizontally,
The relative rocking of the guide rod 25 and guide tube 24 ensures that the columnar object support rail 13 engages with the V-groove of each tray.

[Effect of idea]

Since the present invention is configured as described above, even if the positions of the grooves of the trays to be connected to each other do not completely match, it is possible to smoothly transfer a columnar object such as a nuclear fuel pellet onto the groove of an adjacent tray. It is possible to reliably prevent the columnar objects from falling over and being damaged during transfer, and there is no need to properly adjust the pitch between the grooves even when transferring multiple rows at the same time.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal side view showing the use of the columnar object transfer jig of the present invention, Fig. 2 is a longitudinal sectional front view of the same;
Fig. 3 is a diagram similar to Fig. 2 showing another embodiment of the present invention, Fig. 4 is a diagram showing another embodiment of the present invention, and Figs. 5 and 6 are of a conventional transfer state. The explanatory diagram, FIG. 7, is an explanatory diagram of still another conventional transfer state. DESCRIPTION OF SYMBOLS 10... First tray, 11... Nuclear fuel pellet, 12... Second tray, 13, 22... Columnar object support rail, 15... Guide side plate, 16... Connection member, 17, 23... Support Members: 18... tension spring, 24... guide tube, 25... guide rod.

Claims (1)

[Scope of utility model registration request] It has an inclined surface whose upper surface descends sequentially from the center toward both the front and rear ends, and one end of the surface is placed in a groove of a first tray for transferring a columnar object, and the groove and the top of the first tray are connected to each other. A columnar object support rail whose tip end is inserted into a space formed between the columnar object and the lower surface of the columnar object to be transferred, and whose other end is similarly inserted into a groove of a second tray. and guide side plates disposed on both sides above the support rail to guide the side surface of the columnar object that is moved along the support rail.
Transfer jig for columnar objects.