CN103075094B - A-shaped safety ladder - Google Patents
A-shaped safety ladder Download PDFInfo
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- CN103075094B CN103075094B CN201210087059.XA CN201210087059A CN103075094B CN 103075094 B CN103075094 B CN 103075094B CN 201210087059 A CN201210087059 A CN 201210087059A CN 103075094 B CN103075094 B CN 103075094B
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- ladder body
- ladder
- side ladder
- front side
- font
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Abstract
The invention relates to an A-shaped safety ladder comprising a front side ladder body (1) and a back side ladder body (2) hinged on the top. The front side ladder body (1) comprises front supporting columns (11) arranged on left and right sides and a plurality of horizontal pedals (12) horizontally bridged between the front supporting columns (11) arranged on the two sides. The back side ladder body (2) comprises back supporting columns (21) arranged on left and right sides and an upper connection rod (22) and a lower connection rod (23) respectively connecting the tops and bottoms of the back supporting columns (21) arranged on the two sides. No horizontal pedal is arranged between the upper and lower connection rods. A front closure plate (15) and a back closure plate (25) stopping a user from climbing to the ladder top are respectively fixedly arranged on the upper parts of the front side ladder body and the back side ladder body. A construction worker can lean his body against the closure plates, such that body balance can be maintained during climbing operations, and ladder body strength and stability can be enhanced. With the A-shaped safety ladder, a user is prevented from crossing both sides of the ladder, and is prevented from climbing to the ladder top, such that accidents are prevented. The ladder body adopts an insulating material which prevents electric shock, such that the ladder is safer to use.
Description
Technical field
The present invention and a kind of device of climbing to a higher point, particularly relate to a kind of A font ladder of the insulation used in construction site, apparatus of the present invention are applicable to the construction sites such as building, decoration, maintenance, use apparatus of the present invention greatly can improve the safety of site construction.
Background technology
In building site, decoration and maintenance building site often will use auxiliary ascend operation instrument, and the administrative regulation in some place also specifies, needs to use workbench when working for liftoff more than 2 meters.The auxiliary ascend operation instrument that current construction site is commonly used generally uses double ladder.The patent No. be 200520063300.0 patent of invention disclose a kind of Self-locking safety A-ladder, this double ladder is formed by connecting by connector by two vertical ladder bodies, vertical ladder body respectively by two terraced bars is connected with some pedals and forms in interval, and connector ties secondary and right connection pair by the Left-wing Federation to be connected through the hinge and to form.The structure of existing double ladder is similar, but generally there are following two common ground: 1, the structure full symmetric of two vertical ladder bodies, the cross bar of ladder is all that frame is to the top of ladder always by fixing interval, and namely the both sides of ladder are all provided with the cross bar trampled for constructor; 2, majority is made by metal material.
Ascend operation on construction site often needs to change construction location with construction speed, in order to the progress that do not dally over one's work, or dislike climbing up and climb down that to move ladder cumbersome, some constructor just directly rides over the top of double ladder, ride on the both sides cross bar of double ladder, direct pin moves double ladder, utilize the inertia of health even movable to arrive new construction location to the left and right realizing double ladder, constructor sometimes even bi-pedal to the top of ladder carry out operation, although can job schedule be accelerated like this, but whole process all will rely on pin to pin double ladder, therefore careless slightly constructor will to fall and injured from double ladder.On the other hand, the power supply facilities on construction site is many to be built all temporarily, and the situation that electric wire is exposed to construction ground often occurs, constructor can be caused to get an electric shock when the double ladder that metal material makes encounters the electric wire of damage.
Summary of the invention
The present invention, on the basis of summing up a large amount of job site contingency origin cause of formation of research, for the deficiency of existing auxiliary ascend operation instrument trestle ladder structure design, provides a kind of A font emergency staircase that effectively can reduce construction contingency and occur.
The present invention adopts following technical scheme as a kind of A font emergency staircase, and comprise front side ladder body and rear side ladder body that top movable connects, described front side ladder body is together with involving by collapsible connecting rod in the middle part of rear side ladder body; It is characterized in that: described front side ladder body and rear side ladder body is made by insulation materials and both are symmetrical arrangements;
Described front side ladder body comprises the horizontal pedal of the two vertical front support posts in left and right and polylith horizontal cross-over connection two front support post, forms the work plane that can ascend a height thus; Described rear side ladder body comprises upper connecting rod and the lower connecting rod of the vertical rear support post in two, left and right and difference cross-over connection two rear support column top and bottom, does not arrange horizontal pedal, form pedalless non-working surface thus between described upper connecting rod and lower connecting rod.Due to apparatus of the present invention only have before for work plane, constructor across the both sides operation of ladder, thus can not reduce the accident rate of ascend operation.
Described front side ladder body and rear side ladder body top are installed with restriction respectively and climb the front shrouding on extremely ladder top and rear shrouding, this front shrouding not only can push up to ladder in constructor's climbing, can also lean on to ensure that constructor keeps one's balance when ascend operation for constructor's health, and intensity and the steadiness of terraced body can be strengthened; And the horizontal pedal distance front side ladder body of ladder body the top, described front side and the distance of rear side ladder junction, body top have 800 millimeters at least, this structure can be stopped constructor and climb to the very useful both feet of ladder and move the dangerous operation custom of ladder.
Described front side ladder body and rear side ladder body adopt the wooden of insulation or engineering plastic materials to be made, and therefore apparatus of the present invention insulate completely, therefore can prevent constructor from getting an electric shock.
Described horizontal pedal upper surface is provided with anti-slip tank.The height of described front shrouding and rear shrouding is 250-450 millimeters.The width of described horizontal pedal is 70-80 millimeter, and its thickness is 15-25 millimeter.
Compared with prior art, A font emergency staircase of the present invention is only provided with horizontal pedal at side ladder body, and opposite side ladder body does not establish horizontal pedal, can prevent constructor from meeting accident across the both sides operation of terraced body thus, the horizontal pedal distance ladder top of Ti Ti the top, A font emergency staircase side of the present invention is distant, and be provided with front and back shrouding above terraced body, before and after this, shrouding not only can prevent constructor from climbing to the very useful both feet of ladder and move the dangerous operation behavior of ladder, and can be used for constructor's health to lean on to ensure that constructor keeps one's balance when ascend operation, strengthen intensity and the steadiness of terraced body.Ladder of the present invention adopts insulation materials to be made, therefore can protection against electric shock, uses safer.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's safe A word ladder.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
As shown in Figure 1, safe A word ladder of the present invention forms primarily of front side ladder body 1 and rear side ladder body 2, on front side of this terraced body 1 and rear side ladder body 2 hinged at top, and to be coupled together by strut 3 in the middle part of side, form the structure that a side is A font thus.
Described front side ladder body 1 is each side provided with a front support post 11, and be laterally installed with the horizontal pedal 12 of polylith between the front support post 11 of these both sides, the distance between adjacent horizontal pedal 12 is about 305 millimeters, and this distance can appropriately adjust according to the height of ladder.Horizontal pedal 12 is designed to plate, and its width is 70-80 millimeter, and thickness is 15-25 millimeter, can increase contact surface during step, and improve security performance, in the present embodiment, width is 75 millimeters, and thickness is 20 millimeters.In addition, described horizontal pedal 12 upper surface is provided with the anti-slip tank 16 that V-arrangement is presented in cross section, further increases the safety of horizontal pedal 12.In order to prevent constructor from climbing the fallen accident that meets accident to the operation of ladder top, the horizontal pedal 12 of ladder body 1 the top, front side is not less than 800 millimeters apart from the distance of the terraced body 1 in front side and rear side ladder hinged place, body 2 top, is 845 millimeters in the present embodiment.
Described rear side ladder body 2 be each side provided with a rear support post 21, the top of this both sides rear support post 21 and bottom link together respectively by upper connecting rod 22 and lower connecting rod 23, form a roughly trapezoidal structure, between described upper connecting rod 22 and lower connecting rod 23, horizontal pedal is not set, so, constructor just cannot ride and carry out operation in the both sides of ladder, also cannot clamp ladder both sides and move ladder, avoid the generation of above-mentioned hazardous act thus to greatest extent.
In addition, the external surface that ladder body 1 top, described front side is positioned at both sides front support post 11 is installed with front shrouding 15, the external surface that terraced body 2 top of rear side is positioned at both sides rear support post 21 is installed with rear shrouding 25, the height of described front shrouding 15 and rear shrouding 25 is 250-450 millimeters, is 330 millimeters in the present embodiment.The benefit arranging front shrouding 15 and rear shrouding 25 can prevent from constructor from climbing to move to ladder top or folder ladder, and can for body-support to keep the intensity and the steadiness that balance, strengthen terraced body.
Get an electric shock to prevent ladder, described front side ladder body 1 and rear side ladder body 2 all adopt the wood materials of insulation, joggle is adopted to fix between described front support post 11 and horizontal pedal 12, described upper connecting rod 22 and also adopt joggle to fix between lower connecting rod 23 and rear support post 21.Or described front side ladder body 1 and rear side ladder body 2 adopt engineering plastics to be made, and on front side of this, terraced body 1 and rear side ladder body 2 all can injection mo(u)ldings.
The middle part connecting the strut 3 of described front side ladder body 1 and rear side ladder body 2 side is rotating structure, during use, these strut 3 both sides are launched in line thus front side ladder body 1 and rear side ladder body 2 are separated into A font, and when not using, the both sides of strut 3 can be folded thus front side ladder body 1 and rear side ladder body 2 can be folded up, conveniently deposit and move.
The above is preferred embodiment of the present invention, is not limited to the present invention, and all amendments, equivalent replacement or improvement etc. done in the present invention's spirit and principle, all should be included in protection scope of the present invention.
Claims (9)
1. an A font emergency staircase, comprises front side ladder body (1) and rear side ladder body (2) of top movable connection, involves together in the middle part of described front side ladder body (1) and rear side ladder body (2) by collapsible connecting rod (3); It is characterized in that: described front side ladder body (1) and the terraced body (2) of rear side is made by insulation materials and both are symmetrical arrangements;
Described front side ladder body (1) comprises the horizontal pedal (12) of the two vertical front support posts (11) in left and right and the horizontal cross-over connection two front support post (11) of polylith, forms the work plane that can ascend a height thus; Described rear side ladder body (2) comprises upper connecting rod (22) and the lower connecting rod (23) of the vertical rear support post (21) in two, left and right and difference cross-over connection two rear support post (21) top and bottom, horizontal pedal is not set between described upper connecting rod (22) and lower connecting rod (23), forms pedalless non-working surface thus;
Described front side ladder body (1) and rear side ladder body (2) top are installed with front shrouding (15) and the rear shrouding (25) that extremely ladder top is climbed in restriction respectively.
2. A font emergency staircase according to claim 1, is characterized in that: described horizontal pedal (12) upper surface is provided with anti-slip tank (16).
3. A font emergency staircase according to claim 1 and 2, is characterized in that: described front side ladder body (1) and rear side ladder body (2) adopt wood materials to be made.
4. A font emergency staircase according to claim 1 and 2, is characterized in that: described front side ladder body (1) and rear side ladder body (2) adopt engineering plastics to be made.
5. A font emergency staircase according to claim 1 and 2, is characterized in that: the horizontal pedal (12) distance front side ladder body (1) of ladder body (1) the top, described front side and the distance of rear side ladder body (2) junction, top are not less than 800 millimeters.
6. A font emergency staircase according to claim 1 and 2, is characterized in that: the height of described front shrouding (15) and rear shrouding (25) is 250-450 millimeters.
7. A font emergency staircase according to claim 1 and 2, is characterized in that: the width of described horizontal pedal (12) is 70-80 millimeter, and its thickness is 15-25 millimeter.
8. A font emergency staircase according to claim 3, it is characterized in that: between described front support post (11) and horizontal pedal (12), adopt joggle to fix, described upper connecting rod (22) and adopt joggle to fix between lower connecting rod (23) and rear support post (21).
9. A font emergency staircase according to claim 4, is characterized in that: described front side ladder body (1) and rear side ladder body (2) are injection mo(u)lding.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210087059.XA CN103075094B (en) | 2012-03-29 | 2012-03-29 | A-shaped safety ladder |
| SG2012051488A SG193685A1 (en) | 2012-03-29 | 2012-07-12 | A-shaped safety ladder |
| HK13105807.7A HK1178954A1 (en) | 2012-03-29 | 2013-05-16 | A-shaped safety ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210087059.XA CN103075094B (en) | 2012-03-29 | 2012-03-29 | A-shaped safety ladder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103075094A CN103075094A (en) | 2013-05-01 |
| CN103075094B true CN103075094B (en) | 2015-07-15 |
Family
ID=48151776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210087059.XA Active CN103075094B (en) | 2012-03-29 | 2012-03-29 | A-shaped safety ladder |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN103075094B (en) |
| HK (1) | HK1178954A1 (en) |
| SG (1) | SG193685A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350900A (en) * | 2015-12-04 | 2016-02-24 | 李曼菲 | Herringbone ladder |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US958732A (en) * | 1908-03-06 | 1910-05-24 | Dennis Novelty Ladder Company | Ladder. |
| GB2417281A (en) * | 2004-08-05 | 2006-02-22 | Neallen Ltd | Apparatus and method to prevent ladder use` |
| CN2802058Y (en) * | 2005-05-30 | 2006-08-02 | 魏强 | Foot and seat two-purpose stable folding ladder with side frame |
| CN201297124Y (en) * | 2008-11-06 | 2009-08-26 | 冷鹭浩 | Anti-skid footplate of ladder |
| CN202165000U (en) * | 2011-05-11 | 2012-03-14 | 黄铭堂 | Collapsible ladder |
| CN202611567U (en) * | 2012-03-29 | 2012-12-19 | 有利建筑有限公司 | A-shaped safety ladder |
-
2012
- 2012-03-29 CN CN201210087059.XA patent/CN103075094B/en active Active
- 2012-07-12 SG SG2012051488A patent/SG193685A1/en unknown
-
2013
- 2013-05-16 HK HK13105807.7A patent/HK1178954A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN103075094A (en) | 2013-05-01 |
| SG193685A1 (en) | 2013-10-30 |
| HK1178954A1 (en) | 2013-09-19 |
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