JPH0325636U

JPH0325636U -

Info

Publication number: JPH0325636U
Application number: JP8630189U
Authority: JP
Priority date: 1989-07-21
Filing date: 1989-07-21
Publication date: 1991-03-15

Description

[Brief explanation of the drawing]

第１図は実施例の上梯子をあげた場合の側面図
、第２図は実施例の上梯子を降した場合の側面図
、第３図は地上に露出した部分の斜視図、第４
図は留金物の拡大側面図。１……側柱、２……桟、３……下梯子、４……
上梯子、５……取手、６……水平枠、７……垂直
桟、８……防護柵、９……留金物、１０……マン
ホール縁枠、１０′……マンホール蓋、１１……
床、１２……留金物のボルト、１３……釣り針の
ような凹み。 Figure 1 is a side view of the example when the upper ladder is raised, Figure 2 is a side view of the example when the upper ladder is lowered, Figure 3 is a perspective view of the part exposed above the ground, and Figure 4 is a side view of the example when the upper ladder is lowered.
The figure is an enlarged side view of the clasp. 1... side pillar, 2... crosspiece, 3... lower ladder, 4...
Upper ladder, 5...handle, 6...horizontal frame, 7...vertical crosspiece, 8...protective fence, 9...clasp, 10...manhole edge frame, 10'...manhole cover, 11...
Floor, 12... Bolt of the clasp, 13... A dent like a fishhook.

補正平１．１１．２０実用新案登録請求の範囲を次のように補正する
。Amendment 11/20/1999 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】鉄または、アルミニユームを素材としたマンホ
ールの蓋１１′と開口部縁枠１０及び断面コ型
金物の開口部を対向した側柱１に桟２を付けた下
梯子３と、コ型金物の背部を対向した側柱に棧
２を付けたるを上梯子４とし、コ型金物の辺を
互いに組み合わせ差し込んだ１組の梯子とよりな
り、下梯子３は、上端をマンホールの開口部の縁
枠１０に固定し、下端は床１１に固定し、上梯子
４は、上端に、ボルトで、取り外し可能な取つ手
５があり、上部に、マンホールの開口部内周より
小なる外周の水平枠６と垂直桟７とよりなる防護
柵８を固定し、下部には１端が、ボルト１２によ
り回転可能に、他端は釣り針のような凹み１３の
ある留金具９が装置してある。以上にて構成する防護柵付きマンホール昇降装
置。[Scope of Claim for Utility Model Registration] A manhole cover 11' made of iron or aluminum, an opening edge frame 10, and a lower ladder 3 with a crosspiece 2 attached to a side post 1 facing the opening of a U-shaped metal fitting. The upper ladder 4 has a ladder 2 attached to the side post facing the back of the U-shaped hardware, and the lower ladder 3 has its upper end connected to a manhole. The upper ladder 4 has a removable handle 5 with a bolt on the upper end, and a handle 5 on the upper end that is smaller than the inner circumference of the manhole opening. A protective fence 8 consisting of a horizontal frame 6 and a vertical crosspiece 7 on the outer periphery is fixed, and at the bottom, one end is rotatable with a bolt 12, and the other end has a clasp 9 with a recess 13 like a fishhook. It has been done. Manhole lifting device with protective fence configured as above.

Claims

[Scope of claims for utility model registration] (1) Manhole covers and opening edges made of iron or aluminum. (2) A lower ladder 3 with crosspieces 2 attached to the side pillars 1 facing the opening of a U-shaped hardware made of iron or aluminum, and a crossbeam attached to the side pillars facing the back of the U-shaped hardware. is the upper ladder 4, and the sides of the U-shaped hardware are combined and inserted into a set of ladders. (3) The lower ladder 3 has its upper end fixed to the edge frame 10 of the manhole opening and its lower end fixed to the floor 11, and the upper ladder 4 has a handle 5 on its upper end that can be removed with a bolt. A protective fence 8 consisting of a horizontal frame 6 and a vertical crosspiece 7 with an outer circumference smaller than the inner circumference of the manhole opening is fixed to the manhole opening, and one end is rotatable with a bolt 12 at the bottom, and a recess 13 like a fishhook is attached at the other end.
A clasp 9 is installed. Manhole lifting device with protective fence configured as above.