CN103075094A - A-shaped safety ladder - Google Patents
A-shaped safety ladder Download PDFInfo
- Publication number
- CN103075094A CN103075094A CN201210087059XA CN201210087059A CN103075094A CN 103075094 A CN103075094 A CN 103075094A CN 201210087059X A CN201210087059X A CN 201210087059XA CN 201210087059 A CN201210087059 A CN 201210087059A CN 103075094 A CN103075094 A CN 103075094A
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- Prior art keywords
- 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 device of the present invention and a kind of usefulness of climbing to a higher point, the A font that relates in particular to a kind of insulation of using in the construction site is terraced, and apparatus of the present invention are applicable to the construction sites such as building, decoration, maintenance, the safety of using apparatus of the present invention can greatly improve site construction.
Background technology
In the building site, decoration and maintenance building site often will use auxiliary ascend operation instrument, some local administrative regulation also stipulates, need to use workbench liftoff when working more than 2 meters.Present construction site auxiliary ascend operation instrument normal operation double ladder commonly used.The patent No. is that 200520063300.0 patent of invention discloses a kind of Self-locking safety A-ladder, this double ladder is formed by connecting by connector by two vertical ladder bodies, the vertical ladder body is connected with some pedals and consists of in the interval respectively by two terraced bars, and connector is secondary by Left-wing Federation's knot and right connection pair is connected through the hinge and forms.The structure of existing double ladder is similar, but generally have following two common ground: 1, the structure full symmetric of two vertical ladder bodies, the cross bar of ladder all is that frame is to the top of ladder always by fixing interval, and namely the both sides of ladder all are provided with the cross bar of trampling for the constructor; 2, majority is made by metal material.
Ascend operation on the construction site often need to be changed construction location with construction speed, for the progress that do not dally over one's work, perhaps 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 cross bar of the both sides of double ladder, directly move double ladder with pin, utilize the inertia of health realize double ladder about in addition move forward and backward to arrive new construction location, the constructor sometimes in addition bi-pedal to the top of ladder come operation, although can accelerate job schedule like this, therefore but whole process all will rely on pin to pin double ladder, and careless slightly constructor will be falls and injured from double ladder.On the other hand, the power supply facilities on the construction site is many all to be built temporarily, and the situation that electric wire is exposed to construction ground often occurs, and the double ladder that metal material is made can cause that the constructor gets an electric shock when running into the electric wire of damage.
Summary of the invention
The present invention for the deficiency of existing auxiliary ascend operation instrument trestle ladder structure design, provides a kind of and can effectively reduce the A font emergency staircase that the construction contingency occurs on the basis of summing up a large amount of job site contingency origin causes of formation of research.
The present invention adopts following technical scheme such as a kind of A font emergency staircase, comprises front side ladder body and rear side ladder body that top movable connects, and described front side ladder body involves by collapsible connecting rod with rear side ladder body middle part is in the same place; It is characterized in that: the terraced body of described front side ladder body and rear side is made by insulation materials and both are symmetrical arrangements;
The horizontal pedal of two vertical front support posts and the horizontal cross-over connection two front support posts of polylith consisted of the work plane that can ascend a height thus about described front side ladder body comprised; Two vertical rear support posts and respectively upper connecting rod and the lower connecting rod of cross-over connection two rear support column tops and bottom did not arrange horizontal pedal about described rear side ladder body comprised between described upper connecting rod and lower connecting rod, consisted of thus pedalless non-working surface.Because to only have the front be work plane to apparatus of the present invention, the constructor can not be across the both sides operation of ladder, thereby has reduced the accident rate of ascend operation.
Described front side ladder body and rear side ladder body top are installed with respectively the restriction climbing to front shrouding and the rear shrouding on ladder top, should not only can the constructor climb to the ladder top by front shrouding, can also lean on to guarantee that the constructor keeps one's balance when ascend operation for constructor's health, and can strengthen intensity and the steadiness of terraced body; And the horizontal pedal of ladder body the top, described front side has 800 millimeters at least apart from the distance of the terraced body in front side and junction, rear side ladder body top, and this structure can be stopped the constructor and climb the dangerous operation of moving ladder to the very useful both feet of ladder and be accustomed to.
Described front side ladder body and rear side ladder body adopt the wooden or engineering plastic materials of insulation to be made, so apparatus of the present invention insulate fully, therefore can prevent that the 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 the 70-80 millimeter, and its thickness is the 15-25 millimeter.
Compared with prior art, A font emergency staircase of the present invention only is provided with horizontal pedal at side ladder body, and opposite side ladder body is not established horizontal pedal, can prevent that thus the constructor from meeting accident across the both sides operation of terraced body, the horizontal pedal of A font emergency staircase one side ladder body of the present invention the top is distant apart from the ladder top, and shrouding before and after terraced body top is provided with, this front and back shrouding can prevent that not only the constructor from climbing the dangerous operation behavior of moving ladder to the very useful both feet of ladder, and can lean on to guarantee that the constructor keeps one's balance when the ascend operation for constructor's health, strengthen intensity and the steadiness of terraced body.Ladder of the present invention adopts insulation materials to be made, and therefore the energy protection against electric shock uses safer.
Description of drawings
Fig. 1 is the structural representation of the safe A word of the present invention ladder.
The specific embodiment
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 mainly is comprised of front side ladder body 1 and rear side ladder body 2, and this front side ladder body 1 and rear side ladder body 2 are hinged at the top, and couple together by strut 3 at the middle part, side, form thus the structure that a side is the A font.
Described front side ladder body 1 each side is provided with a front support post 11, laterally is installed with the horizontal pedal 12 of polylith between the front support post 11 of these both sides, and the distance between the 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 the 70-80 millimeter, and thickness is the 15-25 millimeter, and the contact surface in the time of can increasing step improves security performance, and width is 75 millimeters in the present embodiment, and thickness is 20 millimeters.In addition, described horizontal pedal 12 upper surfaces are provided with the anti-slip tank 16 that V-arrangement is presented in the cross section, have further increased the safety of horizontal pedal 12.In order to prevent that the constructor from climbing to the operation of terraced top and the fallen accident that meets accident, 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 hinged place, rear side ladder body 2 top, is 845 millimeters in the present embodiment.
Described rear side ladder body 2 each side be provided with a rear support post 21, the top of this both sides rear support post 21 and bottom link together by upper connecting rod 22 and lower connecting rod 23 respectively, form a trapezoidal structure roughly, between described upper connecting rod 22 and the lower connecting rod 23 horizontal pedal is not set, so, the constructor just can't ride in the both sides of ladder and come operation, also can't clamp the ladder both sides and move ladder, has avoided to greatest extent thus the generation of above-mentioned hazardous act.
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 rear side ladder body 2 tops are 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 that front shrouding 15 and rear shrouding 25 are set be can prevent the constructor climb to ladder top or the folder ladder mobile, and can be for body-support to keep balance, to strengthen intensity and the steadiness of terraced body.
In order to prevent that ladder from getting an electric shock, described front side ladder body 1 and rear side ladder body 2 all adopt the wood materials of insulation, adopt joggle to fix between described front support post 11 and the horizontal pedal 12, also adopt joggle to fix between described upper connecting rod 22 and lower connecting rod 23 and the rear support post 21.
The middle part that connects the strut 3 of described front side ladder body 1 and rear side ladder body 2 sides is rotating structure, thereby these strut 3 both sides launch in line front side ladder body 1 and rear side ladder body 2 to be separated into the A font during use, and when not using, front side ladder body 1 and rear side ladder body 2 can be folded up thereby the both sides of strut 3 can be folded, conveniently deposit and move.
The above is preferred embodiment of the present invention, is not limited to the present invention, all modifications of doing in the present invention spirit and principle, is equal to replacement or improvement etc., all should be included in protection scope of the present invention.
Claims (10)
1. an A font emergency staircase comprises front side ladder body (1) and rear side ladder body (2) that top movable connects, and described front side ladder body (1) and rear side ladder body (2) middle part involve together by collapsible connecting rod (3); It is characterized in that: described front side ladder body (1) and the terraced body of rear side (2) is made by insulation materials and both are symmetrical arrangements;
The horizontal pedal (12) of two vertical front support posts (11) and the horizontal cross-over connection two front support posts (11) of polylith about described front side ladder body (1) comprises consists of the work plane that can ascend a height thus; Two vertical rear support posts (21) and respectively upper connecting rod (22) and the lower connecting rod (23) of cross-over connection two rear support post (21) tops and bottom about described rear side ladder body (2) comprises, between described upper connecting rod (22) and lower connecting rod (23), horizontal pedal is not set, consists of thus pedalless non-working surface.
2. A font emergency staircase according to claim 1 is characterized in that: described front side ladder body (1) and rear side ladder body (2) top are installed with respectively front shrouding (15) and the rear shrouding (25) that the restriction climbing is pushed up to ladder.
3. A font emergency staircase according to claim 2, it is characterized in that: described horizontal pedal (12) upper surface is provided with anti-slip tank (16).
4. according to claim 1 to the described A font of 3 each claims emergency staircase, it is characterized in that: described front side ladder body (1) and rear side ladder body (2) adopt wood materials to be made.
5. according to claim 1 to the described A font of 3 each claims emergency staircase, it is characterized in that: described front side ladder body (1) and rear side ladder body (2) adopt engineering plastics to be made.
6. according to claim 1 to the described A font of 3 each claims emergency staircase, it is characterized in that: the horizontal pedal (12) of ladder body (1) the top, described front side is not less than 600 millimeters apart from the distance of the terraced body in front side (1) and rear side ladder body (2) junction, top.
7. according to claim 1 to the described A font of 3 each claims emergency staircase, it is characterized in that: the height of described front shrouding (15) and rear shrouding (25) is 250-450 millimeters.
8. according to claim 1 to the described A font of 3 each claims emergency staircase, it is characterized in that: the width of described horizontal pedal (12) is the 70-80 millimeter, and its thickness is the 15-25 millimeter.
9. A font emergency staircase according to claim 4, it is characterized in that: adopt joggle to fix between described front support post (11) and the horizontal pedal (12), adopt joggle to fix between described upper connecting rod (22) and lower connecting rod (23) and the rear support post (21).
10. A font emergency staircase according to claim 5 is characterized in that: described front side ladder body (1) and the terraced body of rear side (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 true CN103075094A (en) | 2013-05-01 |
| CN103075094B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350900A (en) * | 2015-12-04 | 2016-02-24 | 李曼菲 | Herringbone ladder |
Citations (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
Patent Citations (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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350900A (en) * | 2015-12-04 | 2016-02-24 | 李曼菲 | Herringbone ladder |
Also Published As
| Publication number | Publication date |
|---|---|
| SG193685A1 (en) | 2013-10-30 |
| CN103075094B (en) | 2015-07-15 |
| HK1178954A1 (en) | 2013-09-19 |
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