JPS5853553B2 - Rotation mechanism of rack equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotating mechanism for a rack that facilitates construction and maintenance work when mounting relatively heavy equipment such as a crossbar exchanger on a rack.

In order to improve the workability of maintenance and inspection of the above-mentioned equipment and to reduce the floor space required for installation on the floor, the main body structure of the equipment is made up of two or three racks, and these rack frames can be opened and closed freely even when the front door is opened. The frame structure is such that it is possible.

The main parts of such a conventional frame structure are shown in FIG.

FIG. 1 is a simplified perspective view of a cabinet frame having a two-shelf configuration, and the front door and the like are not shown.

In the figure, 1 is a fixed frame, 2 is a cable storage box, and 3 and 4 are a front frame and a rear frame related to the rotation mechanism of the present invention.

The fixing frame 1 is provided with a bolt tightening seat, etc., which allows the cabinet to be directly fixed to the ceiling or the wall or floor where the cabinet is installed.

When the above-mentioned frame body is equipped with equipment, each frame costs 200~
300K? , the total load weight is approximately 800 Ky.

The front rack 3 and the rear rack 4 have a small shaft on the base side of the rack bottom plate 7 so that the door can be opened and closed freely (see arrow 6 in the figure) around the single support shaft 5 (located in two places, upper and lower). Wheels 8 are provided.

A, B, 0 and D indicate the position of the wheel 8.

In this way, the trajectory of the wheel movement accompanying the door operation at the position of the plurality of frames connected to the single support shaft 5 is not a simple circle, but each exhibits a unique operating radius and operating angle.

For this reason, conventionally, the wheel is a small wheel 8 of a turnable type whose direction with respect to the operating direction of the axle 10 can be easily changed as shown in FIG.
was using.

However, the small wheels 8, which are floor wheels that share the load as described above, require a large external force to turn the axle 10, even though there is an initial bearing mechanism 9 for opening and closing the frame.

If you force the door open or close in such a case, the floor will be damaged.

Additionally, if the floor surface on which the device is installed is soft or uneven, smooth opening and closing operations cannot be expected with respect to the connection shaft (5 in Fig. 1).

In such a situation, various problems occur during installation of the device or during maintenance and inspection after installation.

The object of the present invention is to eliminate the above-mentioned problems.

The intention is to present a rotation mechanism that enables smooth and free opening and closing without being affected by the floor structure etc. where it is installed in a rack system with a front/rear frame configuration that is subject to a load of at least 200 to 9. be.

The feature is that oval holes X, Y, and Z for fixing small wheels are provided on the floor side of the bottom plate, and a special washer of an appropriate shape is fitted into the oval holes. This is a rotation mechanism of a rack device in which the wheel mounting angle of the small wheels of the operating radius and operating angle which vary depending on the position of the rack are regulated.

Hereinafter, this will be explained as Fig. 3, which is an exploded perspective view of the main part of the bottom plate structure, and the mounting position of the special washer (there are two mounting methods).

). In the figure, the same numbers and symbols are given to functional parts that are the same as or equivalent to the previous ones.

In the present invention, the conventional small wheels 8 are not used.

Rather, the small wheels 11 of the fixed axle 10 that are commonly used are selected and used in a manner suitable for the mounted weight.

For this reason, specific attachment points A, B, C! It is necessary to accurately estimate in advance the locus of movement of D and D as the frame opens and closes around the simple axis 5, and in particular, to sufficiently confirm the movement radius and the movement angle.

In this way, the following means for optimizing the mounting angle of the shaft 10 of the small wheel vehicle 11 can be changed.

This will be explained according to an exploded perspective view.

In the figure, reference numeral 12 denotes a wheel pedestal attached to the bottom plate 7, which has screw holes 13 and 13'.

Above the axis of the screw holes 13 and 13' are a hexagonal head bolt 14 for fixing the wheel, a special washer 15 which forms the main part of the present invention, and the washer 15.
The oblong holes X, Y, and Z (three places) into which the holes are fitted, and the spring washer 18 are illustrated, respectively.

FIG. 4 is a perspective view illustrating the details of a special washer 15 formed in accordance with the dimensional relationship between an oblong hole, for example Z, and a fit therein.

As shown in the figure, there are two mounting positions determined by the dotted line and the solid line, and the washer hole 16 can be placed in two positions accordingly.

The present invention allows such vertical relative displacement of the washer hole 16 to be used for regulating the mounting angle of the small wheel axle 10.

The washer 15 is provided with a step 17, and the step 17 is equivalent to the thickness of the bottom plate 7 to facilitate the work of handling the washer.

Hereinafter, a method for regulating the mounting angle of the wheel 11 will be explained in detail.

At points A and C (see FIG. 1), which are located far from the simple axis 5, the respective frames follow trajectories with relatively similar operating radii and operating angles.

Therefore, the difference in turning angle between the two axles of the small wheel may be small, and the axle can be set using the oval hole Z and the usual circular hole W.

The illustrated special washer 15 is in the state of the front frame 3, and when it is attached to the rear frame, the mounting direction is 1 as shown in FIG.
Do this at an 80° angle.

On the other hand, at points B and D (see Fig. 1), which are located close to the simple axis 5, the respective frames exhibit relatively different operating radii and operating angle trajectories, so that the two wheel axles 10 The turning angle difference is large, so oval holes X and Y are provided to attach the wheels.

The position (orientation) of the special washer 15 when attaching the wheel to the front or rear frame is the same as described above.

Although the above embodiment has been described with a two-frame configuration, the main constituent means of the present invention, that is, the oval holes X, Y, and Z for fixing the small wheels to be attached are set on the floor side of the bottom plate of the frame, and the small wheels are fitted into these. The means for adjusting the mounting angle of the small wheel axle by changing the mounting position of the special washer can equally be applied to equipment racks with a three-frame structure, consisting of a picture rack, a middle rack, and a rear rack that are connected to a single shaft. Needless to say.

Adoption of the configuration means of the present invention provides the following advantages.

1. Instead of the expensive rotatable small wheels 8 (see Fig. 2), the inexpensive fixed shaft type small wheels 11 (see Fig. 3) are used to smoothly open and close the plural frames, which is economical.

2. When manufacturing such a racking device, the front and rear rack frames are manufactured to the same design specifications, making it convenient to store them.

3. Easier rack installation work and equipment maintenance work.

The rotating mechanism of the rack device described in detail above is an extremely simple method for improving the rack mounting function of a heavy load object, and has great practical effects.

[Brief explanation of the drawing]

Figure 1 is a simplified perspective view showing the main parts of a conventional frame structure;
3 is an exploded structural perspective view of the main part of the bottom plate according to the present invention, and FIG. 4 is a perspective view showing the mounting state of the special washer of the present invention. 3 and 4...framework, 5...simple sentence axis, 7.
...Bottom plate, 8 and 11 ...Small wheel, 10
...Axle, 13 and 13'...Screw hole,
14...Hex bolt, 15...Special washer.

Claims (1)

[Claims] 1 In a frame configuration in which multiple frames are connected around a single support shaft so as to be openable and closable, oval holes x, y, and z for fixing small wheels are provided on the floor side of the bottom plate of the frame. , wherein the mounting angle of the axle of the small wheel, which has a working radius and a working angle, which vary depending on the position of the rack body, is regulated by changing the mounting position of a special washer of an appropriate shape that is fitted into the oblong hole. Rotating mechanism.