CN104818943A - Elevator pit ladder - Google Patents
Elevator pit ladder Download PDFInfo
- Publication number
- CN104818943A CN104818943A CN201510211733.4A CN201510211733A CN104818943A CN 104818943 A CN104818943 A CN 104818943A CN 201510211733 A CN201510211733 A CN 201510211733A CN 104818943 A CN104818943 A CN 104818943A
- Authority
- CN
- China
- Prior art keywords
- side bar
- cat ladder
- elevator pit
- groove
- movable side
- 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
Links
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
- E06C1/387—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 having tip-up steps
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
-
- 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
Abstract
The invention discloses an elevator pit ladder. The elevator pit ladder comprises two ladder boundary beams in vertically parallel arrangement, a plurality of parallel ladder transverse rods are rotatably connected between the two ladder boundary beams, and the two ladder boundary beams include one moving boundary beam and one fixed boundary beam fixed onto the wall of a hoistway. The wall of the hoistway is fixedly provided with a clamping groove for supporting the moving boundary beam. The elevator pit ladder has an unfolded state and a folded state; when the elevator pit ladder is in the unfolded state, the moving boundary beam is away from the fixed boundary beam and supported on the clamping groove; when the elevator pit ladder is in the folded state, the moving boundary beam rotates upwards along the ladder transverse rods to be put together with the fixed boundary beam. A switch which enables an elevator to stop for maintenance after being triggered is arranged on the clamping groove, and the switch is abutted against the moving boundary beam to be triggered when the elevator pit ladder is in the unfolded state. The elevator pit ladder has the advantages that freedom in switching between the unfolded state and the folded state of the ladder is realized, space of the hoistway is greatly saved, and convenience in operation, safety and reliability are achieved.
Description
Technical field
The present invention relates to a kind of cat ladder, especially a kind of elevator pit cat ladder.
Background technology
All be provided with the cat ladder for maintainer's turnover in the pit of elevator hoistways, so that maintainer enters elevator pit safely, thus Inspection and maintenance carried out to parts such as the snubber installed in pit, swelling devices.In prior art, elevator pit cat ladder is directly fixedly installed on the well enclosure of elevator pit, and elevator pit cat ladder self structure is fixed and cannot be carried out folding and retraction, takies more hoistway space.
Summary of the invention
In view of this, the object of this invention is to provide a kind of collapsible folding and unfolding, easy to operate, safe and reliable elevator pit cat ladder, to save ele-vator shaft spaces.
For achieving the above object, the invention provides a kind of elevator pit cat ladder, comprise two vertically parallel cat ladder side bars, it is characterized in that: between the cat ladder side bar described in two, be connected with the many cat ladder cross bars be parallel to each other rotationally, cat ladder side bar described in two wherein one for being fixed on the fixing side bar on well enclosure, another root is movable side bar; Described well enclosure is also fixedly installed the draw-in groove supporting described movable side bar; Described elevator pit cat ladder has deployed condition and closes up state, described movable side bar is supported on described draw-in groove away from described fixing side bar in the deployed state, upwards rotates and merges with described fixing side bar along described cat ladder cross bar and draw close closing up under state described movable side bar; Described draw-in groove is provided with and makes elevator out of service after being triggered and the switch entering inspecting state, described elevator pit cat ladder is when deployed condition, and described switch and described movable side bar offset and be triggered.
Preferably, be also included in and close up locking under state and connect the locking mechanism of described fixing side bar and described movable side bar.
Further preferably, described locking mechanism comprises the jam plate be rotatably connected on described movable side bar, the tapered end be fixed on described fixing side bar, described jam plate has the locked groove coordinated with described tapered end.Jam plate is rotatably connected on movable side bar by bearing pin.
Preferably, described movable side bar have the feet corresponding with described draw-in groove.
Further preferably, the quantity of described draw-in groove is multiple, multiple described draw-in groove is vertically disposed on described well enclosure, and the quantity of described feet is also multiple and identical with the quantity of described draw-in groove, and multiple described feet is disposed on described movable side bar.
Still more preferably, described switch is arranged in one of them of multiple described draw-in groove, and described switch offsets with corresponding described feet and is triggered in the deployed state.
In a particular embodiment, the two ends of described cat ladder cross bar are rotationally connected respectively by bearing pin and described movable side bar and described fixing side bar.
Elevator pit cat ladder of the present invention, by adopting fixing side bar and movable side bar and being rotationally connected the structure of cat ladder cross bar of the two, defines the parallelogram sturcutre of Foldable and deformable, achieves the freedom retractable of cat ladder between deployed condition and juxtaposition.Being put down by movable side bar when overhauling is supported on draw-in groove, switch on draw-in groove is triggered and makes elevator enter inspecting state, maintainer enters the pit of elevator hoistways along cat ladder, overhauled rear maintainer climb out of pit along cat ladder and mentioned by movable side bar, switch resets, and elevator exits inspecting state, then movable side bar and fixing side bar close up, greatly save hoistway space, easy to operate, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the front view of elevator pit cat ladder of the present invention in deployed condition.
Fig. 2 is the A portion enlarged drawing in Fig. 1.
Fig. 3 is the top view of elevator pit cat ladder of the present invention in deployed condition.
Fig. 4 is the B portion enlarged drawing in Fig. 3.
Fig. 5 is that elevator pit cat ladder of the present invention is closing up the front view of state.
Fig. 6 is that C-C in Fig. 5 is to sectional view.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Embodiment one
Refer to Fig. 1 to Fig. 6, a kind of elevator pit cat ladder, comprise the two cat ladder side bars vertically be arranged in parallel, two cat ladder side bars wherein one be movable side bar 1, another root is fixing side bar 8, and this elevator pit cat ladder also comprises draw-in groove 2, cat ladder cross bar 3, bearing pin 4, switch 5, jam plate 6 and tapered end 7.Movable side bar 1 and fixing side bar 8 vertically be arranged in parallel, and many cat ladder cross bar 3 two ends be parallel to each other are rotatably connected between movable side bar 1 and fixing side bar 8 respectively by bearing pin 4.Fixing side bar 8 is fixed on well enclosure, and movable side bar 1 launches away from fixing side bar 8 by cat ladder cross bar 3 or closes up near fixing side bar 8.
Movable side bar 1, fixing side bar 8 and many cat ladder cross bars 3 constitute the parallelogram sturcutre of Foldable and deformable, therefore, it is possible to the folding and retraction of pit ladder.
This elevator pit cat ladder has deployed condition and close up state, and movable side bar 1 is supported on draw-in groove 2 away from fixing side bar 8 in the deployed state, upwards rotates and merges with fixing side bar 8 and draw close closing up under state movable side bar 1 along cat ladder cross bar 3.
Draw-in groove 2 is fixedly installed on well enclosure with movable support side bar 1.The quantity of draw-in groove 2 is multiple, and multiple draw-in groove 2 is vertically disposed on well enclosure, and movable side bar 1 has and multiple draw-in groove 2 feet 11 one to one, in the present embodiment, draw-in groove 2 and feet 11 are respectively by 3.
One of them draw-in groove 2 is provided with and makes elevator out of service after being triggered and the switch 5 entering inspecting state, elevator pit cat ladder is when deployed condition, and the feet 11 that switch 5 is corresponding with movable side bar 1 offsets and is triggered.In the present embodiment, switch is arranged on the draw-in groove 2 of vertically bottom.
The elevator pit cat ladder of the present embodiment locks the locking mechanism being connected and fixed side bar 8 and movable side bar 1 under being also included in and closing up state.Described locking mechanism comprises and is rotatably connected on the jam plate 6 on movable side bar 1, the tapered end 7 be fixed on fixing side bar 8 by bearing pin, described jam plate 6 has the locked groove coordinated with tapered end 7.As illustrated in Figures 5 and 6, after movable side bar 1 and fixing side bar 8 merging are drawn close, rotate jam plate 6, make its locked groove coordinate fastening with tapered end 7, movable side bar 1 Automatic-expanding when non-artificial operation can be avoided.
When maintainer needs to enter pit overhaul, open jam plate 6, expansion activity side bar 1, every root cat ladder cross bar 3 all rotates around the bearing pin 4 being connected and fixed side bar 8, until movable side bar 1 is away from fixing side bar 8 and by feet 11 feet draw-in groove 2, now the feet 11 of movable side bar 1 gets to switch 5, and elevator enters inspecting state, and maintainer can enter pit overhaul along cat ladder.After maintenance terminates, maintainer climbs out of pit, movable side bar 1 is mentioned and makes it draw close to fixing side bar merging, switch 5 resets, every root cat ladder cross bar 3 all rotates around the bearing pin 4 being connected and fixed side bar 8, until movable side bar 1 and fixing side bar 8 and tight together with, then rotated by jam plate 6 and fasten tapered end 7, maintenance terminates.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and implement according to this; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1. an elevator pit cat ladder, comprise two vertically parallel cat ladder side bars, it is characterized in that: between the cat ladder side bar described in two, be connected with the many cat ladder cross bars (3) be parallel to each other rotationally, cat ladder side bar described in two wherein one for being fixed on the fixing side bar (8) on well enclosure, another root is movable side bar (1); Described well enclosure is also fixedly installed the draw-in groove (2) supporting described movable side bar (1); Described elevator pit cat ladder has deployed condition and closes up state, described movable side bar (1) is supported on described draw-in groove (2) away from described fixing side bar (8) in the deployed state, upwards rotates and merges with described fixing side bar (8) along described cat ladder cross bar (3) and draw close closing up under state described movable side bar (1); Described draw-in groove (2) is provided with and makes elevator out of service after being triggered and the switch (5) entering inspecting state, described elevator pit cat ladder is when deployed condition, and described switch (5) and described movable side bar (1) offset and be triggered.
2. elevator pit cat ladder according to claim 1, is characterized in that: be also included under closing up state and lock the locking mechanism connecting described fixing side bar (8) and described movable side bar (1).
3. elevator pit cat ladder according to claim 2, it is characterized in that: described locking mechanism comprises the jam plate (6) be rotatably connected on described movable side bar (1), the tapered end (7) be fixed on described fixing side bar (8), described jam plate (6) has the locked groove coordinated with described tapered end (7).
4. elevator pit cat ladder according to claim 1, is characterized in that: described movable side bar (1) has the feet (11) corresponding with described draw-in groove (2).
5. elevator pit cat ladder according to claim 4, it is characterized in that: the quantity of described draw-in groove (2) is multiple, multiple described draw-in groove (2) is vertically disposed on described well enclosure, the quantity of described feet (11) is also multiple and identical with the quantity of described draw-in groove (2), and multiple described feet (11) is disposed on described movable side bar (1).
6. elevator pit cat ladder according to claim 5, it is characterized in that: described switch (5) is arranged in one of them of multiple described draw-in groove (2), and described switch (5) offsets with corresponding described feet (11) and is triggered in the deployed state.
7. the elevator pit cat ladder according to claim 1 to 6 any one, is characterized in that: the two ends of described cat ladder cross bar (3) are rotationally connected respectively by bearing pin (4) and described movable side bar (1) and described fixing side bar (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510211733.4A CN104818943A (en) | 2015-04-29 | 2015-04-29 | Elevator pit ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510211733.4A CN104818943A (en) | 2015-04-29 | 2015-04-29 | Elevator pit ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104818943A true CN104818943A (en) | 2015-08-05 |
Family
ID=53729396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510211733.4A Pending CN104818943A (en) | 2015-04-29 | 2015-04-29 | Elevator pit ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104818943A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952368A (en) * | 2016-06-20 | 2016-09-21 | 广西南宁栩兮科技有限公司 | Ladder with adjustable beam spacing |
| CN105952367A (en) * | 2016-06-20 | 2016-09-21 | 广西南宁栩兮科技有限公司 | Multifunctional, combined and foldable ladder |
| CN107673209A (en) * | 2017-10-19 | 2018-02-09 | 江苏永钢集团有限公司 | Upper and lower overhead traveling crane safety interlock |
| CN109441332A (en) * | 2018-12-26 | 2019-03-08 | 日立电梯（中国）有限公司 | A kind of pit ladder device |
| CN112027840A (en) * | 2019-12-25 | 2020-12-04 | 迅达（中国）电梯有限公司 | Elevator pit ladder stand device |
| WO2020258791A1 (en) * | 2019-06-28 | 2020-12-30 | 迅达（中国）电梯有限公司 | Elevator pit ladder mounting device |
| CN112761512A (en) * | 2021-01-13 | 2021-05-07 | 白银有色长通电线电缆有限责任公司 | Portable multifunctional folding ladder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001207767A (en) * | 2000-01-25 | 2001-08-03 | Yamauchi Tekkosho:Kk | Emergency escape ladder |
| CN1740509A (en) * | 2005-09-14 | 2006-03-01 | 卢先锋 | Ladder |
| CN202249730U (en) * | 2011-08-26 | 2012-05-30 | 康力电梯股份有限公司 | Shaft ladder stand device for overhauling and maintaining pit |
| US20120222915A1 (en) * | 2011-03-03 | 2012-09-06 | Blaska Richard C | Retractable ladder |
| CN204646079U (en) * | 2015-04-29 | 2015-09-16 | 江南嘉捷电梯股份有限公司 | A kind of elevator pit cat ladder |
-
2015
- 2015-04-29 CN CN201510211733.4A patent/CN104818943A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001207767A (en) * | 2000-01-25 | 2001-08-03 | Yamauchi Tekkosho:Kk | Emergency escape ladder |
| CN1740509A (en) * | 2005-09-14 | 2006-03-01 | 卢先锋 | Ladder |
| US20120222915A1 (en) * | 2011-03-03 | 2012-09-06 | Blaska Richard C | Retractable ladder |
| CN202249730U (en) * | 2011-08-26 | 2012-05-30 | 康力电梯股份有限公司 | Shaft ladder stand device for overhauling and maintaining pit |
| CN204646079U (en) * | 2015-04-29 | 2015-09-16 | 江南嘉捷电梯股份有限公司 | A kind of elevator pit cat ladder |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952368A (en) * | 2016-06-20 | 2016-09-21 | 广西南宁栩兮科技有限公司 | Ladder with adjustable beam spacing |
| CN105952367A (en) * | 2016-06-20 | 2016-09-21 | 广西南宁栩兮科技有限公司 | Multifunctional, combined and foldable ladder |
| CN107673209A (en) * | 2017-10-19 | 2018-02-09 | 江苏永钢集团有限公司 | Upper and lower overhead traveling crane safety interlock |
| CN107673209B (en) * | 2017-10-19 | 2023-11-17 | 江苏永钢集团有限公司 | Safety interlocking device for upper and lower crown blocks |
| CN109441332A (en) * | 2018-12-26 | 2019-03-08 | 日立电梯（中国）有限公司 | A kind of pit ladder device |
| WO2020258791A1 (en) * | 2019-06-28 | 2020-12-30 | 迅达（中国）电梯有限公司 | Elevator pit ladder mounting device |
| CN112027840A (en) * | 2019-12-25 | 2020-12-04 | 迅达（中国）电梯有限公司 | Elevator pit ladder stand device |
| CN112027840B (en) * | 2019-12-25 | 2021-09-10 | 迅达（中国）电梯有限公司 | Elevator pit ladder stand device |
| CN112761512A (en) * | 2021-01-13 | 2021-05-07 | 白银有色长通电线电缆有限责任公司 | Portable multifunctional folding ladder |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150805 |