CN112722152A

CN112722152A - Deep cabin manhole guardrail

Info

Publication number: CN112722152A
Application number: CN202011343072.8A
Authority: CN
Inventors: 孙宏日; 王蕾; 刘庆晖; 王嘉然; 邓俊毅
Original assignee: TIANJIN XINGANG SHIPBUILDING HEAVY INDUSTRY CO LTD
Current assignee: TIANJIN XINGANG SHIPBUILDING HEAVY INDUSTRY CO LTD
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-04-30

Abstract

The invention discloses a deep-cabin manhole guardrail, which comprises a bottom plate, a guardrail column and a detachable small ship chain, wherein the bottom plate, the guardrail column and the detachable small ship chain are symmetrically connected with two sides of a manhole; the opening of the horizontal U-shaped pipe is provided with a detachable marine small chain enclosure or disconnection. The invention has the beneficial effects that: simple structure, simple installation, low cost and high safety.

Description

Deep cabin manhole guardrail

Technical Field

The invention belongs to the technical field of mechanical manufacturing and installation, and particularly relates to a manhole guardrail of a deep cabin.

Background

The manhole ring is commonly found in ships and other places with the requirement on tightness, and the manhole seat ring surrounds a circle along the circumferential direction of a manhole inlet and is used for fixing a manhole cover. When the manhole cover is removed, the manhole needs to be used for a long time, and a manhole guardrail needs to be added at the manhole.

Currently, commonly used manhole guardrails are single-foot type and double-foot type manhole guardrails. The single-foot manhole guardrail adopts one supporting leg to be fixed on the manhole seat ring, and although the manufacturing and the installation are simple, the supporting leg bears bending moment, so the single-foot manhole guardrail is easy to incline in use; the two-leg manhole guardrail adopts two landing legs to be symmetrically fixed on the manhole seat ring, and although the landing legs are evenly stressed, the guardrail can not bear vertical load and can not provide protection for people who get in and out.

Disclosure of Invention

The technical problem to be solved by the invention is that the manhole guardrail structure is unstable and low in strength. The manhole guardrail is simple to manufacture, stable in structure, high in strength and convenient to disassemble.

The invention provides a manhole guardrail which comprises a guardrail, two railing columns and a small marine chain. The guardrail strides on the manhole seat and circles, and two railing posts are fixed at manhole ring bottom plate for one section, and the other end of railing post is fixed in the bottom of guardrail.

Above-mentioned manhole guardrail forms the rectangle and supports, stable in structure, and during personnel can get into the manhole from the guardrail opening part, get into the back and block with the small chain. Compared with the existing single-foot type and double-foot type guardrails, the manhole guardrail with the support is stable in structure and high in strength.

Preferably, the guard rail is made of a whole-pipe bent pipe, so that the welding amount is reduced. The bottom end of the railing post is connected with the bottom plate. The bottom plate is fixedly connected with the manhole ring through bolts. The manhole guardrail is very convenient to mount and dismount and can be repeatedly used.

Preferably, a safety small chain is arranged on the guardrail, and people enter and leave the safety small chain to be hung on the safety small chain.

The invention has the beneficial effects that:

1. the structure is simple: the guardrail, the railing post, the bottom plate, the small safety chain, the hook and the U-shaped pipe clamp are simple in component; the guardrail is integrally made of bent pipes, so that the welding amount is reduced. The bottom plate is fixed with the manhole ring base through bolts, so that the mounting and the dismounting can be fast, and the labor amount is reduced.

2. Safety: the guardrail stable in structure, intensity are high. The bearable moment is large. The entry is locked with safe small chain after personnel pass in and out, and it is high to prevent the unexpected security of falling.

3. The manufacturing cost is low: the materials are all common materials and have no special materials.

Drawings

FIG. 1 is a schematic front view of a deep well manhole guard rail structure of the present invention;

FIG. 2 is a schematic side view of FIG. 1;

fig. 3 is a schematic top view of fig. 1.

Wherein:

1-guardrail 2-bottom plate 3-railing post

4-U-shaped pipe clamp 5-marine small chain 6-hook

Detailed Description

The invention is described in further detail below with reference to the following figures and detailed description:

as shown in fig. 1 to 3, the manhole guard bar for the deep cabin comprises a guard bar 1, a bottom plate 2, a guard bar column 3, a U-shaped pipe clamp 4, a marine small chain 5 and a hook 6, wherein the guard bar is installed on a manhole seat ring, the bottom plate 2 is arranged on two sides of the manhole seat ring, the guard bar 1 is fixed with the bottom plate 2, the guard bar 2 is made by bending a whole pipe, one end of the guard bar is a horizontal U-shaped pipe, two open ends of the other end of the guard bar are respectively bent downwards, and the guard bar column 3 is arranged between the horizontal U-shaped pipe and a ground; one end of the U-shaped pipe clamp 4 is fixed with the guardrail 1, and the other end is fixed with the hook 6.

The workpiece mounting steps are as follows:

step one, fixing the bottom plate and the manhole ring bottom plate through nuts.

And step two, connecting the small chain with the barrier through the hook.

Claims

1. The utility model provides a deep compartment manhole guardrail which characterized by: the manhole cover comprises a base plate (2) symmetrically connected with two sides of a manhole, a guardrail (1), a railing post (3) and a detachable small chain (5) for a ship, wherein the guardrail (1) is a horizontal U-shaped pipe, two ends of an opening of the guardrail are respectively bent downwards, and the bent ends are welded and fixed with the base plate (2); the opening of the horizontal U-shaped pipe is provided with a detachable small chain (5) for a ship to block or break.

2. The deep compartment manhole guard of claim 1, wherein: and a railing post (3) is arranged between the corresponding two sides of the horizontal U-shaped pipe and the bottom plate (2) for supporting.

3. The deep compartment manhole guard of claim 2, wherein: the railing post (3) is connected with the bottom plate (2) in a welding mode.

4. The deep compartment manhole guard of claim 1, wherein: the manhole is connected with the bottom plate (2) through bolts.

5. The deep compartment manhole guard of claim 1, wherein: one end of the marine small chain is welded with one end of the guardrail (1) to form a whole, and the other end of the marine small chain is provided with a hook (6) which is buckled with a U-shaped pipe clamp on the guardrail (1) at the corresponding end.

6. The deep compartment manhole guard of claim 1, wherein: the guardrail (2) is made of a round steel pipe in a bending mode.