CN107143277A - Platform linkage and ladder - Google Patents
Platform linkage and ladder Download PDFInfo
- Publication number
- CN107143277A CN107143277A CN201710413685.6A CN201710413685A CN107143277A CN 107143277 A CN107143277 A CN 107143277A CN 201710413685 A CN201710413685 A CN 201710413685A CN 107143277 A CN107143277 A CN 107143277A
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- China
- Prior art keywords
- platform
- frame
- ladder
- connecting rod
- terraced
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000010521 absorption reaction Methods 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/39—Ladders having platforms; Ladders changeable into platforms
- E06C1/393—Ladders having platforms foldable with the ladder
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/14—Ladders capable of standing by themselves
- E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
- E06C1/18—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as ladders
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/383—Foldable ladders in which the longitudinal members are brought together on folding
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
- E06C7/081—Rungs or other treads comprising anti-slip features
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
- E06C7/082—Connections between rungs or treads and longitudinal members
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/42—Ladder feet; Supports therefor
- E06C7/46—Non-skid equipment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The present invention relates to ladder technical field, more particularly, to a kind of platform linkage and ladder.The platform linkage, including the first platform, the second platform, platform connecting rod and terraced frame connecting rod, the platform connecting rod is used to connect first platform and second platform, and the terraced frame connecting rod is used to connect second platform and terraced frame, the trapezoidal structure of platform；The ladder, including main ladder frame, the terraced frame of pair and the platform linkage that are connected with the main ladder frame, first platform are hinged with the main ladder frame and the secondary terraced frame respectively, and the terraced frame connecting rod is hinged with second platform and the secondary terraced frame respectively.The present invention alleviates platform linkage in the prior art and ladder limit Zhang Xiaoguo is poor, the problem of stability is poor.
Description
Technical field
The present invention relates to ladder technical field, more particularly, to a kind of platform linkage and ladder.
Background technology
Ladder is used for daily life and various engineering ascending tools, makees terraced frame by two long thick bar, centre is crossed
Scansorial riding club, for climbing；Ladder species substantially has two kinds, and one kind is yi shaped ladder, and this ladder includes two and stood
Bar and the crosspiece being erected between two vertical rods, they can only uprightly be used, and need ladder leaning on pinnacled fixation when in use
To provide ladder support on position, and the simple function ascended a height only is provided, such as repaired using this ladder, needed above and below repeatedly
Taking and placing instrument, profit inconvenient for use.Another is double ladder, and this ladder is mostly by the hinged main ladder support in top and support
Ladder is constituted, and it can carry out ascending a height operation in overhead positions with yi shaped ladder compared with, double ladder include main ladder frame and secondary ladder frame, it is necessary to
Attachment structure is attached, generally, and user carries out limitation main ladder frame and secondary terraced frame using the drawstring mode that is flexible coupling
Between the distance opened, referred to as limit；Now attachment structure serves conclusive effect to the steadiness of ladder.
Common double ladder has many defects in terms of the ins and outs processing of ladder：General way is all moving herringbone
Ladder, but it is possible to which often excessively complexity causes consumptive material to the mode of activity, other excessively simply cause limit Zhang Xiaoguo poor, stability
, there is potential safety hazard in difference；Taken up space and practicality is not strong, after folding big.
The information for being disclosed in the background section is merely intended to deepen the understanding of the general background technology to the present invention, and
It is not construed as recognizing or implies information structure prior art known to those skilled in the art in any form.
The content of the invention
The first object of the present invention is to provide a kind of platform linkage, alleviates platform linkage in the prior art
Limit Zhang Xiaoguo poor, the problem of stability is poor.
The platform linkage that the present invention is provided, including：First platform, the second platform, platform connecting rod and terraced frame connecting rod；
The platform connecting rod is used to connect first platform and second platform；
The terraced frame connecting rod is used to connect second platform and terraced frame；
The trapezoidal structure of platform.
Further, first platform and second platform are in antiparallelogram structure, and the length on the side of platform first
Length of the degree less than the side of platform second.
Further, the connection of the platform connecting rod and first platform and second platform is rivet interlacement；
The terraced frame connecting rod is rivet interlacement with second platform and terraced frame.
Further, the surface of first platform and second platform is equipped with skid resistant course, or described first flat
The surface of platform and second platform is provided with bulge-structure.
Further, the area of second platform is in 95cm2~100cm2Between.
Further, first platform and second platform are internally provided with reinforcement.
The second object of the present invention is to provide a kind of ladder, alleviates platform linkage in the prior art and limit Zhang Xiaoguo
Difference, the problem of stability is poor.
The present invention also provides a kind of ladder, including main ladder frame, the secondary ladder frame that be connected with the main ladder frame and platform company
Linkage；
First platform is hinged with the main ladder frame and the secondary terraced frame respectively；
The terraced frame connecting rod is hinged with second platform and the secondary terraced frame respectively.
Further, pedal is provided with the main ladder frame, the pedal surface is provided with skid resistant course.
Further, it is separately installed with Anti-slip cover at the base angle of the main ladder frame and the secondary terraced frame.
Further, the main ladder frame and the secondary terraced frame are hollow heat absorption plate core structure, hollow circular tube or hollow square bar.
Beneficial effects of the present invention are：
The platform linkage that the present invention is provided, including the first platform, the second platform, platform connecting rod and terraced frame connecting rod, put down
Platform connecting rod is used to connect the first platform and the second platform, and terraced frame connecting rod is used to connect the second platform and terraced frame, the trapezoidal knot of platform
Structure；Because platform connecting rod connects the first platform and the second platform, the first platform is set to drive the rotation of the second platform, terraced frame connecting rod connection
Second platform and terraced frame, can drive terraced frame to close, while can also play a part of limit；And pass through two platforms and connecting rod
Setting, make it have the good advantage of stability, and change by the first platform and the second platform the setting of conventional pedal,
Its operation is set more to stablize.
In addition, platform be in antiparallelogram structure, and first while length be less than second while length, be easy to platform connecting rod
It is more attractive in appearance after the closure of mechanism, and closure.
The ladder that the present invention is provided, including main ladder frame, the terraced frame of pair and platform linkage that are connected with main ladder frame, first is flat
Platform is hinged with main ladder frame and secondary terraced frame respectively, and terraced frame connecting rod is hinged with the second platform and secondary terraced frame respectively；Due to platform connecting rod machine
The setting of structure, so the ladder has all advantages of above-mentioned platform linkage.
In addition, terraced frame connecting rod is at an acute angle with horizontal line, further improves ladder in ladder in use
Stability.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of platform linkage provided in an embodiment of the present invention；
Fig. 2 is structural representation when ladder provided in an embodiment of the present invention is used；
Fig. 3 is the front view after ladder provided in an embodiment of the present invention is closed；
Fig. 4 is the side view after ladder provided in an embodiment of the present invention is closed.
Icon：The platforms of 100- first；The side of 101- platforms first；The side of 102- platforms second；The platforms of 200- second；300- is put down
Platform connecting rod；400- ladder frame connecting rods；500- main ladder frames；501- pedals；The secondary terraced frames of 600-.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The present invention is described in further detail below by specific embodiment and with reference to accompanying drawing.
The platform linkage that the present invention is provided, including：First platform, the second platform, platform connecting rod and terraced frame connecting rod；Institute
Stating platform connecting rod is used to connect first platform and second platform；The terraced frame connecting rod is used to connect second platform
With terraced frame；The trapezoidal structure of platform.
The platform linkage, by the setting of the first platform, the second platform, platform connecting rod and terraced frame connecting rod, wherein flat
Platform connecting rod is used to connect the first platform and the second platform, and terraced frame connecting rod is used to connect the second platform and terraced frame, the trapezoidal knot of platform
Structure；Because platform connecting rod connects the first platform and the second platform, the first platform is set to drive the rotation of the second platform, terraced frame connecting rod connection
Second platform and terraced frame, can drive terraced frame to close, while can also play a part of limit；And pass through two platforms and connecting rod
Setting, make it have the good advantage of stability.
Embodiment one
Fig. 1 is the structural representation of platform linkage provided in an embodiment of the present invention.
As shown in figure 1, the platform linkage that the present embodiment is provided, including：It is first platform 100, the second platform 200, flat
Platform connecting rod 300 and terraced frame connecting rod 400；
Platform connecting rod 300 is used to connect the first platform 100 and the second platform 200；
Terraced frame connecting rod 400 is used to connect the second platform 200 and terraced frame；
The trapezoidal structure of platform.
The platform linkage, passes through the first platform 100, the second platform 200, platform connecting rod 300 and terraced frame connecting rod 400
Set, wherein platform connecting rod 300 is used to connect the first platform 100 and the second platform 200, and terraced frame connecting rod 400 is used to connect second
Platform 200 and terraced frame, the trapezoidal structure of platform；Because platform connecting rod 300 connects the first platform 100 and the second platform 200, make the
One platform 100 drives the second platform 200 to rotate, second platform of the terraced connection of frame connecting rod 400 200 and terraced frame, and terraced frame can be driven to close
Close, while limit can also be played a part of；And by the setting of two platforms and connecting rod, make it have good excellent of stability
Point.
It should also be noted that, the quantity of platform is not limited only to two, although write the first platform 100 and in Fig. 1 exactly
Two platforms 200, refer at least to need to set two, set three, four or it is multiple can also, particular number is according to customer demand
Depending on processing cost, just do not illustrate one by one herein.
In the present embodiment alternative, the first platform 100 and the second platform 200 are in antiparallelogram structure, and the first side
Length be less than the second side length.
It should be noted that platform is in antiparallelogram structure, and platform first is when 101 length is less than platform the second
102 length is more attractive in appearance after the closure of platform linkage, and closure is easy to.
In the present embodiment alternative, the connection of the platform 100 of platform connecting rod 300 and first and the second platform 200 is riveting
Nail connection；
The terraced platform 200 of frame connecting rod 400 and second and terraced frame are rivet interlacement.
In the present embodiment alternative, the surface of the first platform 100 and the second platform 200 is equipped with skid resistant course, Huo Zhe
The surface of one platform 100 and the second platform 200 is provided with bulge-structure.
It should be noted that pass through the setting of the surface anti-skidding layer of the first platform 100 and the second platform 200, and first flat
The platform 200 of platform 100 and second sets wider, not only increases the stability of whole platform linkage, and profile is smooth.
In the present embodiment alternative, the area of the second platform 200 is in 95cm2~100cm2Between.
It should be noted that the area of pedal of the prior art is general in 30cm2~35cm2Between, area is smaller, only
User's climbing can be helped, it is impossible to trample and worked on pedal, and the area of the second platform 200 of the application is in 95cm2~
100cm2Between, when user is trampled on the second platform 200, it can directly trample and be operated on the second platform 200.
In the present embodiment alternative, the first platform 100 and the second platform 200 are internally provided with reinforcement.
It should be noted that the setting of reinforcement can improve the stress degree of the first platform 100 and the second platform 200.
Embodiment two
Fig. 2 is structural representation when ladder provided in an embodiment of the present invention is used；Fig. 3 is provided in an embodiment of the present invention
Front view after ladder closure；Fig. 4 is the side view after ladder provided in an embodiment of the present invention is closed.
As in Figure 2-4, the present embodiment also provides a kind of ladder, including main ladder frame 500, the pair that is connected with main ladder frame 500
Terraced frame 600 and platform linkage；
First platform 100 is hinged with main ladder frame 500 and secondary terraced frame 600 respectively；
Terraced frame connecting rod 400 is hinged with the second platform 200 and secondary terraced frame 600 respectively.
The ladder, including main ladder frame 500, the terraced frame 600 of pair and platform linkage that are connected with main ladder frame 500, first is flat
Platform 100 is hinged with main ladder frame 500 and secondary terraced frame 600 respectively, and terraced frame connecting rod 400 is cut with scissors with the second platform 200 and secondary terraced frame 600 respectively
Connect；Due to the setting of the mechanism of platform connecting rod 300, so the ladder has all advantages of above-mentioned platform linkage, with limit
Zhang Xiaoguo is good, the good advantage of stability.
It should be noted that ladder can be folded in the case of, into a slab construction after ladder collapses,
It is a slab construction to be greatly saved behind space, and ladder collapses, has no the place of projection, and even uniform saves empty
Between.
In the present embodiment alternative, pedal 501 is provided with main ladder frame 500, the surface of pedal 501 is provided with skid resistant course.
It should be noted that because the surface of pedal 501 sets skid resistant course, and pedal 501 sets wider, not only increases whole
The stability of individual ladder, and profile is smooth.
In the present embodiment alternative, ladder in use, press from both sides by the formation of the terraced platform 200 of frame connecting rod 400 and second
Angle.
It should be noted that in ladder in use, when ladder is opened completely, can limit main ladder frame 500 with
The angle of secondary ladder frame 600, also ensures the open angle of ladder while playing limit Zhang Zuoyong.
It should also be noted that, it is best angle, energy that the angle of terraced frame connecting rod 400 and the second platform 200, which is set to 175 °,
Enough stabilities for further improving ladder, it is to avoid ladder using process the problem of unexpected closure occur.
In the present embodiment alternative, Anti-slip cover is separately installed with the base angle of main ladder frame 500 and secondary terraced frame 600.
It should be noted that by the setting of main ladder frame 500 and the Anti-slip cover at the secondary terraced base angle of frame 600, greatly strengthen ladder
Non-skid property after son expansion, it is to avoid because base angle skid resistance is poor when user uses, fall from ladder.
It should also be noted that, being provided with hand grip portion on main ladder frame 500 and secondary terraced frame 600, the size of hand grip portion meets
Size when people clenches fist, convenient force.
In the present embodiment alternative, main ladder frame 500 and secondary terraced frame 600 are hollow heat absorption plate core structure, hollow circular tube or middle short side
Bar.
It should be noted that when main ladder frame 500 and secondary terraced frame 600 are hollow D sections pipe so that the quality of whole ladder compared with
Gently, it is easy to movement, and hollow heat absorption plate core structure is also prevented from user's gouge, improves security performance.
It should also be noted that, main ladder frame 500 and secondary terraced frame 600 are set to stainless steel frame or brandreth.
Can be seen that ladder provided in an embodiment of the present invention to the detailed description of the present embodiment with reference to the above is by main ladder frame
500 " humanoid " framves constituted with secondary terraced frame 600；Main ladder frame 500 and secondary terraced frame 600 are flexibly connected by rivet, and rivet is by protecting
Sheath fixes main ladder frame 500 and secondary terraced frame 600 is formed " humanoid "；Terraced frame connecting rod 400 by rivet and the second platform 200 and
Terraced frame connection, platform connecting rod 300 is connected by rivet with the first platform 100 and the second platform 200, the terraced peace of frame connecting rod 400
Platform connecting rod 300 defines the yardstick that ladder can deploy to greatest extent, can play fixed effect, while strengthening stable
Property.In use, terraced frame connecting rod 400 and horizontal line are at an acute angle for ladder；Therefore in ladder in use, can more it enter
The stability for improving ladder of one step.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of platform linkage, it is characterised in that including：First platform, the second platform, platform connecting rod and terraced frame connecting rod；
The platform connecting rod is used to connect first platform and second platform；
The terraced frame connecting rod is used to connect second platform and terraced frame；
The trapezoidal structure of platform.
2. platform linkage according to claim 1, it is characterised in that first platform and second platform are equal
In antiparallelogram structure, and platform first while length be less than platform the second while length.
3. platform linkage according to claim 1, it is characterised in that the platform connecting rod and first platform and
The connection of second platform is rivet interlacement；
The terraced frame connecting rod is rivet interlacement with second platform and terraced frame.
4. platform linkage according to claim 1, it is characterised in that first platform and second platform
Surface is equipped with skid resistant course, or the surface of first platform and second platform is provided with bulge-structure.
5. platform linkage according to claim 1, it is characterised in that the area of second platform is in 95cm2~
100cm2Between.
6. the platform linkage according to claim any one of 1-5, it is characterised in that first platform and described
Two platforms are internally provided with reinforcement.
7. a kind of ladder, it is characterised in that including：Main ladder frame, the terraced frame of the pair being connected with the main ladder frame and claim 1-6 appoint
One platform linkage；
First platform is hinged with the main ladder frame and the secondary terraced frame respectively；
The terraced frame connecting rod is hinged with second platform and the secondary terraced frame respectively.
8. ladder according to claim 7, it is characterised in that pedal, the pedal surface are provided with the main ladder frame
It is provided with skid resistant course.
9. ladder according to claim 7, it is characterised in that pacify respectively at the base angle of the main ladder frame and the secondary terraced frame
Equipped with Anti-slip cover.
10. ladder according to claim 7, it is characterised in that the main ladder frame and the secondary terraced frame be hollow heat absorption plate core structure,
Hollow circular tube or hollow square bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710413685.6A CN107143277A (en) | 2017-06-05 | 2017-06-05 | Platform linkage and ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710413685.6A CN107143277A (en) | 2017-06-05 | 2017-06-05 | Platform linkage and ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107143277A true CN107143277A (en) | 2017-09-08 |
Family
ID=59780008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710413685.6A Pending CN107143277A (en) | 2017-06-05 | 2017-06-05 | Platform linkage and ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107143277A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021042676A1 (en) * | 2019-09-06 | 2021-03-11 | 苏州飞华铝制工业有限公司 | Foldable support column structure having locking function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594794A (en) * | 2015-01-27 | 2015-05-06 | 宁波兴富工具有限公司 | Work ladder as working platform |
| US20150308190A1 (en) * | 2014-03-10 | 2015-10-29 | Tricam Industries, Inc. | Step ladder |
| CN106193997A (en) * | 2016-08-29 | 2016-12-07 | 天津市金锚集团有限责任公司 | Linkage and ladder |
| CN206845084U (en) * | 2017-06-05 | 2018-01-05 | 天津市金锚集团有限责任公司 | Platform linkage and ladder |
-
2017
- 2017-06-05 CN CN201710413685.6A patent/CN107143277A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150308190A1 (en) * | 2014-03-10 | 2015-10-29 | Tricam Industries, Inc. | Step ladder |
| CN104594794A (en) * | 2015-01-27 | 2015-05-06 | 宁波兴富工具有限公司 | Work ladder as working platform |
| CN106193997A (en) * | 2016-08-29 | 2016-12-07 | 天津市金锚集团有限责任公司 | Linkage and ladder |
| CN206845084U (en) * | 2017-06-05 | 2018-01-05 | 天津市金锚集团有限责任公司 | Platform linkage and ladder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021042676A1 (en) * | 2019-09-06 | 2021-03-11 | 苏州飞华铝制工业有限公司 | Foldable support column structure having locking function |
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Application publication date: 20170908 |