CN2176425Y

CN2176425Y - Assembled chain ladder

Info

Publication number: CN2176425Y
Application number: CN 93248099
Authority: CN
Inventors: 孙常胜; 刘光昱
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-30
Filing date: 1993-12-30
Publication date: 1994-09-07
Anticipated expiration: 2003-12-30

Abstract

The utility model provides an assembled chain ladder, comprising mutually hinged sections of ladder, transverse rods and a hung ladder frame. The sections of ladder are divided into the first section and standard sections. The first section is provided with hooks, and the standard sections are provided with supporting feet. The hung ladder frame is composed of two end heads and transverse rods. The utility model is easy and flexible to install and use and is especially suitable for making various inspection well ladders. The assembled chain ladder can be used for preventing losing, corrosion and cutting down construction cost.

Description

Assembled chain ladder

The utility model relates to a kind of ladder, particularly a kind of ladder that can be longitudinal folding.

The cat ladder of using in various manholes is to step on iron by cast iron shown in Figure 8, forms on the borehole wall by equidistant being embedded in.Easily lose; The borehole wall is rough, the building intensity difference; Ironcasting places in the manhole for a long time, and is perishable; Each manhole all will be provided with a cover cat ladder, waste raw material, construction costs height.The prior art more approaching with another kind of the present utility model is folding hanging ladder, and this hanging ladder is made up of the section of ladder of a section mutual articulated and cross bar.If this folding hanging ladder is introduced in the manhole use, will exist the deficiency of these several respects: the one, the suspension of ladder is difficulty relatively; Two are to use inconvenience, if ladder is hung over the centre of well, ladder does not support, and the people is difficult to up and down.If ladder is hung over by borehole wall place, ladder will be close on the borehole wall, and pin is difficult to step on the cross bar of ladder.

The purpose of this utility model is to provide a kind of cat ladder easy to use, particularly can satisfy the chain type assembling cat ladder of using in the various manholes.

The purpose of this utility model is achieved in that it comprises section of ladder, cross bar, mutual articulated between the section of ladder.Section of ladder of the present utility model divides first joint and standard knot, has hook on the first joint, has leg on the standard knot.Ingredient of the present utility model also comprises a hanging ladder frame, and this hanging ladder frame is made up of two ends and cross bar.

The utility model advantage is: 1, have hook on the first joint, form and also comprise a hanging ladder frame, during use hook is hung on the cross bar of hanging ladder frame and gets final product, assemble very convenient; 2, have leg on the standard knot, after the suspension, leg is supported on the borehole wall or other wall, makes between the cross bar of ladder and the wall to keep certain spacing, be convenient to the people about; 3, assembled on site is used and can be overcome fixed ladder and easily lose the deficiency that corrosion and cost height can not be reused.

Fig. 1 is a user mode schematic diagram of the present utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is first joint structural representation;

Fig. 4 is the structural representation of standard knot;

Fig. 5 is the structural representation of hanging ladder frame;

Fig. 6 is the left view of Fig. 5;

Fig. 7 is the structural representation of the optimum implementation of hanging ladder frame;

Fig. 8 is the structural representation that the prior art medium cast iron is stepped on iron.

For example the utility model is done detailed description below in conjunction with accompanying drawing:

1, a kind of chain type assembling cat ladder is made up of ladder and hanging ladder frame two parts.Ladder by head save 1, standard knot 2, cross bar form, and be hinged between each section of ladder.Have hook 3 on the first joint 1, have leg 4 on the standard knot 2.The hanging ladder frame is made up of two ends 5 and cross bar 6.Cross bar 6 is connected between the two ends 5.During use hanging ladder is placed on the well head place of manhole, the hook on the head joint is hung on the hanging ladder frame, ladder overhangs in the well, and the leg on the standard knot is supported on the borehole wall.

2, second kind of embodiment of the present utility model is to adopt rivet to be fixedly hinged between per 2～4 joint section of ladders to form a cell cube, adopt bolt to be movably hinged between each cell cube.Can be during use according to the quantity of the degree of depth selected cell body of well.

3, the third embodiment of the present utility model is that zigzag is arranged on the base of the termination of hanging ladder frame.The frictional force on it and ground is bigger, more stable during use.

4, the 4th kind of embodiment of the present utility model is that flag-inserting hole 7 is set on the cross bar of hanging ladder frame.The construction marker flag can be inserted during use.

Claims

1, a kind of chain type assembling cat ladder, it comprises section of ladder, the cross bar that is hinged, and it is characterized in that: section of ladder divides first joint and standard knot, has hook on the first joint, has leg on the standard knot, and it also comprises a hanging ladder frame, and this hanging ladder frame is made up of two ends and cross bar.

2, chain type according to claim 1 assembling cat ladder is characterized in that: between per 2～4 joints fixedly articulated form a cell cube, adopt bolt to be movably hinged between each cell cube.

3, chain type assembling cat ladder according to claim 1 and 2 is characterized in that: the base indention of the two ends of described hanging ladder frame.

4, chain type assembling cat ladder according to claim 1 and 2 is characterized in that: on the cross bar of described hanging ladder frame flag-inserting hole is arranged.

5, chain type assembling cat ladder according to claim 3 is characterized in that: on the cross bar of described hanging ladder frame flag-inserting hole is arranged.