Coupling guard

Patent metadata

Field	Value
Publication number	US-2016305607-A1
Application number	US-201615097629-A
Country	US
Kind code	A1
Filing date	Apr 13, 2016
Priority date	Apr 16, 2015
Publication date	Oct 20, 2016
Grant date	—

Abstract

A coupling guard capable of adjusting its length with a simple structure is disclosed. The coupling guard for covering a coupling which couples a drive shaft of a prime mover and a rotational shaft of a rotary machine to each other, includes: a guard body including an upper semicylindrical member and a lower semicylindrical member, the guard body having a fastening tool configured to couple the upper semicylindrical member and the lower semicylindrical member to each other; a guard leg configured to support the guard body; and a length adjustment member inserted into the guard body. The length adjustment member has a cylindrical shape. The length adjustment member has an outer circumferential surface which is tightened by inner circumferential surfaces of the upper semicylindrical member and the lower semicylindrical member which are coupled by the fastening tool.

First claim

What is claimed is:

1 . A coupling guard for covering a coupling which couples a drive shaft of a prime mover and a rotational shaft of a rotary machine to each other, the coupling guard comprising:
a guard body including an upper semicylindrical member and a lower semicylindrical member, the guard body having a fastening tool configured to couple the upper semicylindrical member and the lower semicylindrical member to each other; a guard leg configured to support the guard body; and a length adjustment member inserted into the guard body, the length adjustment member having a cylindrical shape, the length adjustment member having an outer circumferential surface which is tightened by inner circumferential surfaces of the upper semicylindrical member and the lower semicylindrical member which are coupled by the fastening tool.

2 . The coupling guard according to claim 1 , wherein the length adjustment member includes:
a single plate which has been bent into a cylindrical shape; protrusions formed on both ends of the plate, respectively; and a fixing mechanism configured to fix the protrusions to each other.

3 . The coupling guard according to claim 2 , wherein the protrusions extend outwardly in a radial direction of the plate in the cylindrical shape, and are in contact with each other, and
the both ends of the plate are in contact with each other.

4 . The coupling guard according to claim 2 , wherein the fixing mechanism includes a bolt inserted into through-holes formed in the protrusions, and a nut engaging with the bolt.

5 . The coupling guard according to claim 2 , further comprising:
a support leg configured to support the length adjustment member, the support leg being secured to the protrusions.

6 . The coupling guard according to claim 2 , wherein the fixing mechanism comprises cutouts which engage with each other, the cutouts being formed in the protrusions, respectively.

7 . The coupling guard according to claim 1 , wherein the length adjustment member comprises at least two segments which are coupled to each other to have a cylindrical shape.

8 . The coupling guard according to claim 2 , wherein the plate is made of metal.

Assignees

• Ebara Corp

Inventors

• Kyo Seigo
• Nakamura Yoichi

Classifications

• F16P1/02 Primary

  Fixed screens or hoods · CPC title

• F01D25/243

  Flange connections; Bolting arrangements (F01D25/265 takes precedence) · CPC title

• F01D21/045

  special arrangements in stators or in rotors dealing with breaking-off of part of rotor · CPC title

• F16D3/843 Primary

  enclosed covers · CPC title

• F16D3/84

  Shrouds, e.g. casings, covers; Sealing means specially adapted therefor · CPC title