JPH06177549A - Overturn preventive structure for case - Google Patents

Abstract

PURPOSE:To enable a case to be easily installed and stably fixed by a method wherein a support foot penetrating through a protruding part provided to each side of the base of the case is provided so as to be leveled from above the upside of the protrudent part. CONSTITUTION:This overturn preventive structure of a case 1 is composed of suspending eye bolts 2 provided to the upside of the case 1, protruding parts 3 each extending from each side of the base of the case 1, a frame 4 which is larger in width than the base of the case 1 and fixed to the base, retaining means 5 or retainging eye bolts each provided upright to each of four corners of the protruding part 3 provided to each side of the frame 4, and support feet 6. When this test equipment is put in operation, the support foot 6 is turned by a wrench provided with a ratchet to be lifted to bring a caster 7 into contact with a floor, then the test device is moved to an operating position, then the support feet 6 are pulled down to come into contact with the floor to support the weight of the test device, and ropes are put through the retaining eye bolts 5 provided upright to the protrudent parts 3, pulled in tension in required direction, and tied down for retaining the test device. As mentioned above, retaining means are provided to the protruding parts located at each side of the base of a case, so that ropes are easily fastened to the lower part of the case, and consequently the lower part of the case can be stably retained and fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case fall prevention structure. When a failure such as a line break occurs in an optical transmission line in an optical submarine transmission system composed of an optical submarine terminal device and an optical submarine repeater, it is important for maintenance and operation to restore it promptly. The optical submarine repeater unit and the test device mainly for block test are installed and used on a swaying ship, so unlike the land-based terminal device, it is necessary to install it so that it does not fall over, and the installation work is easy. Therefore, it is required to be able to stably fix it.

[0002]

2. Description of the Related Art As shown in plan views and side views of FIGS. 3 (a) and 3 (b), a conventional overturning prevention structure for a case in a test apparatus loaded on a ship is provided on a ceiling upper surface of the case 11. A hanging eyebolt 12, a caster 13 for moving and a foot 14 for leveling are provided at the four corners on the bottom lower surface.

The foot 14 has a screw portion 14a at the shaft end screwed into the bottom of the housing 11, and a tool such as a wrench (not shown) is applied to the rotary operation portion 14b (the foot has a hexagonal cross section). When the device is moved, the caster 13 is lifted by lifting the base 14 to support the weight of the device, or when the device is fixed at a fixed position, the caster 13 is supported by the base 14 to float.

This test apparatus is normally stored in a fixed place different from the time of use, and is moored by wrapping a rope or the like (not shown) around the foot 14 so as not to move or fall. When using it, raise the foot 14 and cast the caster 13 on the floor, roll it,
After moving to the place of use, the foot 14 is laid on the floor to support the weight of the apparatus, and the foot 14 is again hung on a rope and pulled in all directions to be fixed by mooring.

[0005]

[Problems to be Solved] However, according to such a fall prevention structure as described above, since the rope or the like is hung on the shaft of the foot, the foot cannot be sufficiently fixed, the foot is deformed, or the foot is rotated. There is a problem that the wrench is difficult to use and the workability is poor because it is performed under the bottom.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a case fall-preventing structure capable of facilitating the installation work of the case and stably fixing the case.

[0007]

In order to achieve the above object, in a fall prevention structure for a housing according to the present invention, the housing is provided with protruding portions on both sides of a bottom portion, and the leveling is performed from the upper surface of the protruding portion. And a foot that is screwed through and is possible.

[0008]

By providing a mooring means such as an eyebolt at the bottom of the housing, a rope or the like can be easily hooked on the mooring means, and the lower part of the housing can be stably moored and fixed. Further, since the rotation operating portion of the foot is projected to the upper side of the projecting portion, a ratchet wrench or the like can be used, and the leveling adjustment of the foot can be facilitated to improve workability.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The gist of the present invention will be described in detail below with reference to the embodiments shown in the drawings. As shown in the plan views and side views of FIGS. 1 (a) and 1 (b) and the enlarged side view of the portion A of FIG. 2, the overturning prevention structure of the housing of the present invention in the test apparatus loaded on the swaying ship is Eyebolts 2 for hanging on the ceiling of the body 1
And the ledges 3 protruding on both sides of the bottom, that is, the gantry 4 having a width larger than the width dimension of the bottom fixed to the bottom surface of the bottom in this embodiment, and the moorings erected at the four corners of the ledge 3 on both sides of the gantry 4. It is composed of the means 5, that is, the mooring eyebolt and the foot 6. As shown in FIG. 2, the pedestal 6 is provided with a rotation operation portion 6a (the shaft end portion has a hexagonal cross section) and a screw portion 6b at the shaft end, and is screwed into the upper surface of the pedestal 4 so as to penetrate the shaft portion and be levelable. To wear. Further, casters 7 are fixedly installed on the four corners of the lower surface of the gantry 4 as in the conventional case.

This test apparatus is normally stored in a fixed place different from the time of use, but when in use, the pedestal 6 is turned up by a wrench 8 with a ratchet, the casters 7 are landed and moved to the place of use. The pedestal 6 is lowered and landed to support the weight of the apparatus, and ropes (not shown) are passed through the mooring eyebolts 5 erected on the overhanging portion 3 to pull the rope in all directions to anchor the mooring.

As described above, by providing the mooring means on both sides of the bottom of the housing, ropes and the like can be easily hung (passed), and the lower portion of the housing can be stably moored and fixed. Also, since the rotation operation part of the pedestal protrudes above the overhanging part (frame), a wrench with a ratchet can be used, and the pedestal can be quickly moved up and down to easily adjust the leveling of the housing. it can. Although the eyebolt is erected as the mooring means in the above-described embodiment, a hook that can be easily hooked by a rope may be used, or a hole through which the rope is passed may be bored through the gantry.

[0012]

As described above in detail, according to the present invention,
The device can be easily installed, the device can be stably moored and fixed with ropes, etc., and the installation work can be performed efficiently in a short time, which is extremely useful in the industry.

[Brief description of drawings]

FIG. 1 is a plan view and a side view of an embodiment according to the present invention.

FIG. 2 is an enlarged side view of part A of FIG.

FIG. 3 is a plan view and a side view thereof according to the related art.

[Explanation of symbols]

 1 is a housing 3 is a projecting portion 5 is a mooring means (an eyebolt for mooring) 6 is a foot 7 is a caster

Claims (1)

[Claims] 1. The housing (1) is provided with protruding portions (3) on both sides of the bottom, and the protruding portion (3) can be leveled from the mooring means (5) and the upper surface of the protruding portion (3). A fall prevention structure for a housing, comprising: a foot (6) that penetrates through and is screwed.