JPS61274129A - Vibration insulator bracket - Google Patents

Abstract

PURPOSE:To prevent a metallic part from wearing, by positioning a piston attached to one end of rod, in a viscous fluid with the use of a belleville spring so that the viscous fluid absorbs slight vibration but allows gradual movements. CONSTITUTION:A piston 2 attached to one end of a rod 3 and disposed in a body 1 is positioned by a belleville spring 4, retractablly in the axial direction thereof and as well in an inclined direction within a certain range. Ring-like bellows 5 fitted between the body 1 and the piston 2 defines within the body 1 a closed space into which viscous fluid 6 is filled. Accordingly, a gradual displacement of the rod 3 is readily allowed, but a strong resistance like a certain rigidity is exhibited against vibration and abrupt displacement of the rod 3.

Description

[Detailed Description of the Invention] [Industrial Application Field] Plant piping is supported by rods that connect it to structures, but vibration isolators and restraints are installed between the rods in order to protect against vibrations such as ground shaking. intervene. The present invention relates to a bracket for locking this rod to a structure.

[Conventional technology]

Piping is displaced due to temperature changes. Further, as long as the a'a tube flows (transfers) a fluid, it is accompanied by minute vibrations, which propagate to the rod. Therefore, the above-mentioned bracket must be capable of suppressing minute vibrations of the rod in the axial direction while coping with some degree of oscillating displacement occurring in the rod.

For this reason, conventionally, as shown in Section 2, a bottle P fixed in a direction perpendicular to the U-shaped body H rod R is passed directly through a hole drilled in the rod R, and this hole and the bottle P are formed in spherical contact. did. That is, all parts are made of metal, and due to the necessity of assembly, it is difficult to see through the presence of minute gaps in the contact areas. Therefore, there is a problem in that this gap causes early wear of the contact portion due to micro vibrations.

[Problem that the invention seeks to solve]

As long as there is metal-to-metal contact, wear cannot be increased. Therefore, in the present invention, the bottle P is eliminated, the rod R is received by a viscous body, and the rod is always positioned at a fixed position.

C Embodiment] FIG. 1 will be explained. The cup-shaped main body 1 has a bottom 1a
A ring-shaped lid 1b is attached to the open end.
is provided in one piece. The piston 2 is housed in the main body,
It can move forward and backward in the axial direction and in the inclined direction within a certain range.

The rod 3 passes freely through the central hole of the lid 1a, one end is fixed to the piston, and the other end is connected to the piping via a vibration isolator (not shown). A pair of disc springs 4 are inserted between the bottom of the main body and the lid on both sides of the piston to position the piston. The ring-shaped bellows 5 is fastened to the piston at the center and fixed to the lid 1b at the outer periphery to form a sealed space within the main body. A viscous material 6 is filled into this space. The viscous body 6 is made of silicone or the like and is commercially available in the form of a putty with a viscosity of about 1♂boas, and behaves as a fluid in low-speed deformation and as a solid in high-speed deformation (high shear velocity) GI region. It has characteristics that indicate. Therefore, it easily adapts to the slow displacement of the rod, but when the rod vibrates or is suddenly displaced, it exhibits a strong low flow similar to that of a rigid body.

The present invention is configured as described above. When the piping expands and contracts due to temperature changes, the piston tilts while being positioned by the spring, but the viscous body deforms to accommodate this without interfering with this. The minute vibrations applied to the piston through the rod are deflected by the viscous body.

〔effect〕

Since minute vibrations are transmitted by a viscous material, there is no chance of metal wear.

Description of the KPJ vehicle in the drawings: Figure 1 is a front view of the present invention, and Figure 2 is a front view of a conventional example.

1... Body, 2... Piston, 3... Rod, 4... Disc spring, 5... Bellows, 6...
・Viscous body.

Claims (1)

[Claims] a cup-shaped body fixed to the structure at the bottom and a ring-shaped lid fixed to the opening; a piston inserted into the body so as to be movable in the axial and oblique directions; A rod is fixed and the other end is connected to the vibration isolator, a disc spring is inserted on both sides of the piston and can position the piston, and one end is fixed to the main body lid and the other end is fixed to the outer end of the piston to create a sealed space around the piston. A bracket for a vibration isolator comprising a bellows and a viscous material filled in the sealed space.