CN2813865Y - Lifting device for extending ladder - Google Patents
Lifting device for extending ladder Download PDFInfo
- Publication number
- CN2813865Y CN2813865Y CN 200520026919 CN200520026919U CN2813865Y CN 2813865 Y CN2813865 Y CN 2813865Y CN 200520026919 CN200520026919 CN 200520026919 CN 200520026919 U CN200520026919 U CN 200520026919U CN 2813865 Y CN2813865 Y CN 2813865Y
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- CN
- China
- Prior art keywords
- ladder
- fixed pulley
- pulley
- main
- frame
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a lifting device for an extending ladder, which comprises a first fixed pulley arranged on the upper part of the side wall of a ladder frame of a main ladder, wherein the lower part of the side wall of the ladder frame of the main ladder is fixedly provided with a second fixed pulley. A group of two movable pulleys arranged by being matched with the first fixed pulley and the second fixed pulley are arranged on the side wall of a ladder frame of an auxiliary ladder and positioned above the second fixed pulley. One end of a fiber rope is fixedly arranged on a device clamp of the first fixed pulley, the fiber rope is wound on the first movable pulley on the auxiliary ladder, passes through the first fixed pulley on the main ladder, re-bypasses the second fixed pulley on the main ladder and passes through the second movable pulley on the auxiliary ladder, and the other end of the fiber rope is fixedly arranged on a device clamp of the second fixed pulley. The protective performance and the safety of a ladder are effectively enhanced because the utility model is provided with an annular fixed-pulley bracket and a movable pulley bracket. The ladder is lifted in a more labor-saving mode because of the reasonable, simple and direct structure, the ladder can be extended freely because of the configuration of the ladder of the lifting device and the ladder is prevented from being hindered to run upward and downward by a rope.
Description
Technical field
The utility model belongs to the ladder field, relates to the lifting gear of extension ladder, is particularly useful for the extensible formula ladder that secondary ladder is walked up and down by lifting gear along main ladder.
Background technology
Known extensible formula ladder, comparatively progressive just like 02253605.1 1 kinds of anti-extension ladders of trying to shirk responsibility of disclosed Chinese patent, comprise: the main ladder of band cleat stanchion and riding club and secondary ladder, pulley gear and locking device, anti-try to shirk responsibility device and adjustable foot of ladder, have master's ladder of several grades of riding clubs and have secondary terraced the walking abreast of matching with it and assemble, the cross section generally reverse each other interlock of cleat stanchion of the major and minor ladder of glass fiber reinforced plastic shapes of the side of being G type is installed, the cleat stanchion opening of secondary ladder is outside, the cleat stanchion opening of main ladder is inside, constitutes slideway mutually.
The pulley lifting device structure of known extensible formula ladder is simple and direct inadequately, and its structure configuration makes the rope annex, and lifting has obstruction for ladder.
Summary of the invention
Problem to be solved in the utility model is to overcome the defective that aforementioned techniques exists, and the pulley lifting gear that provides a kind of structure to be more suitable for the extension ladder.
The utility model solves its technical problem and takes following technical scheme to realize, the lifting gear of a kind of extension ladder that provides according to the utility model, comprise first fixed pulley that is arranged on main terraced frame side wall upper part, wherein, the terraced frame lower sidewall of described main ladder installs second fixed pulley, on the terraced frame sidewall of pair, be positioned at the top position of second fixed pulley, install one group of two movable pulley that are provided with first fixed pulley and second fixed pulley coupling, one end of cordage is installed on the first fixed pulley card, this cordage is around last first movable pulley of secondary ladder, cross first fixed pulley on the main ladder, walk around second fixed pulley on the main ladder again, cross second movable pulley on the secondary ladder, the other end of cordage is installed on the second fixed pulley card.
The utility model solves the also available following technical scheme of its technical problem and further realizes:
The lifting gear of aforesaid extension ladder, wherein, described fixed pulley card is set to an oval ring fixed pulley support, the fixing and terraced frame of this fixed pulley support one end, fixed pulley is interposed in the oval ring fixed pulley support and adorns by a pin pivot.
The lifting gear of aforesaid extension ladder, wherein, described running block is packed on the terraced frame by movable pulley device frame, and this movable pulley device frame has the side's ring stand that is packed on the terraced frame, and running block is journaled on this support by pin.
The utility model compared with prior art has significant advantage and beneficial effect.By above technical scheme as can be known, the utility model has following advantage at least under the structure configuration of excellence:
The utility model is provided with protectiveness and the safety that annular fixed pulley support and moving pulley bracket have effectively improved ladder.Its reasonable simple and direct structure makes the lifting ladder more laborsaving; Promptly ladder is capable of expansion and contraction in the ladder configuration of lifting gear, has avoided rope to hinder ladder to walk up and down again, and the utility model is simple in structure, is skillfully constructed, and more helps industry and implements to promote.
The specific embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the utility model overall structure schematic diagram;
Fig. 2 is the decomposition texture schematic diagram of Fig. 1;
Fig. 3 is the schematic diagram of the utility model device at extension ladder.
The specific embodiment
Below in conjunction with preferred embodiment, to according to the specific embodiment provided by the invention, feature and effect thereof, describe in detail as after; For simple and purpose clearly, hereinafter appropriate omission the description of known technology, in order to avoid those unnecessary details influences are to the description of the technical program.
See also Fig. 1-3, a kind of lifting gear A of extension ladder, comprise first fixed pulley 6 that is arranged on main terraced frame side wall upper part, wherein, the terraced frame lower sidewall of main ladder 1 installs the second fixed pulley 6a, on the terraced frame sidewall of pair, be positioned at the top position of the second fixed pulley 6a, install one group of two movable pulley 7 that are provided with first fixed pulley 6 and second fixed pulley 6a coupling, 7a, one end of cordage 8 is installed on first fixed pulley, 6 device card 61, this cordage is first movable pulley 7 on secondary ladder 2, cross first fixed pulley 6 on the main ladder, walk around the second fixed pulley 6a on the main ladder again, cross the second movable pulley 7a on the secondary ladder, the other end of cordage 8 is installed on the second fixed pulley 6a device card 61a, realize that thus rope passes through pulley belt and the function of secondary terraced lifting and reclaim the rope function.
Described fixed pulley card is set to an oval ring fixed pulley support 611, the fixing and terraced frame of this fixed pulley support one end, and fixed pulley is interposed in the oval ring fixed pulley support and adorns by a pin 612 pivots.But oval ring fixed pulley support gets final product stationary rope pivot dress pulley again, and ring stand also provides protectiveness and the safety that has improved ladder to pulley, and the assembling mode of ring stand forms suitable elasticity, and stressed impact gives effective alleviation for lifting gear thus.
Described running block is packed on the terraced frame by movable pulley device frame 71, and this movable pulley device frame has the side's ring stand 711 that is packed on the terraced frame, and running block is journaled on this support by pin 712.But oval ring fixed pulley support gets final product stationary rope pivot dress pulley again, and ring stand also provides protectiveness and the safety that has improved ladder to pulley.The suitable elasticity of the same formation of the assembling mode of side's ring stand, the same stressed impact gives effective alleviation for lifting gear.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. the lifting gear of an extension ladder, comprise first fixed pulley (6) that is arranged on main terraced frame side wall upper part, it is characterized in that, the terraced frame lower sidewall of described main ladder (1) installs second fixed pulley (6a), on secondary ladder (2) terraced frame sidewall, be positioned at the top position of second fixed pulley, install one group of two movable pulley (7 that are provided with first fixed pulley (6) and second fixed pulley coupling, 7a), one end of cordage (8) is installed on the first fixed pulley card (61), this cordage is around secondary ladder last first movable pulley (7), cross first fixed pulley on the main ladder, walk around second fixed pulley on the main ladder again, cross second movable pulley (7a) on the secondary ladder, the other end of cordage is installed on the second fixed pulley card (61a).
2. the lifting gear of extension ladder as claimed in claim 1, it is characterized in that, described fixed pulley card is set to an oval ring fixed pulley support (611), fixing and the terraced frame of this fixed pulley support one end, fixed pulley is interposed in the oval ring fixed pulley support and adorns by a pin (612) pivot.
3. the lifting gear of extension ladder as claimed in claim 1 or 2, it is characterized in that, described running block is packed on the terraced frame by movable pulley device frame (71), this movable pulley device frame has the side's ring stand (711) that is packed on the terraced frame, and running block is journaled on this support by pin (712).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520026919 CN2813865Y (en) | 2005-08-05 | 2005-08-05 | Lifting device for extending ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520026919 CN2813865Y (en) | 2005-08-05 | 2005-08-05 | Lifting device for extending ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2813865Y true CN2813865Y (en) | 2006-09-06 |
Family
ID=36948950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520026919 Expired - Fee Related CN2813865Y (en) | 2005-08-05 | 2005-08-05 | Lifting device for extending ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2813865Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536104A (en) * | 2011-12-16 | 2012-07-04 | 长沙中联消防机械有限公司 | Aerial ladder device and vehicle |
| CN102561933A (en) * | 2011-12-16 | 2012-07-11 | 长沙中联消防机械有限公司 | Engineering machinery, scaling ladder and tail-end ladder frame of scaling ladder |
| CN103774982A (en) * | 2014-02-13 | 2014-05-07 | 福州市台江区振斌高效电磁聚能科技研究所 | Scaling ladder |
| WO2015042277A1 (en) * | 2013-09-18 | 2015-03-26 | Wing Enterprises, Incorporated | Ladders including rope and pulley system and fall protection |
| CN106884612A (en) * | 2017-03-01 | 2017-06-23 | 国网山东省电力公司青岛供电公司 | A kind of herringbone lift |
| EP3334889A4 (en) * | 2015-08-14 | 2018-08-08 | Branach Technology Pty Ltd | An extendable work platform |
-
2005
- 2005-08-05 CN CN 200520026919 patent/CN2813865Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536104A (en) * | 2011-12-16 | 2012-07-04 | 长沙中联消防机械有限公司 | Aerial ladder device and vehicle |
| CN102561933A (en) * | 2011-12-16 | 2012-07-11 | 长沙中联消防机械有限公司 | Engineering machinery, scaling ladder and tail-end ladder frame of scaling ladder |
| CN102561933B (en) * | 2011-12-16 | 2015-03-04 | 长沙中联消防机械有限公司 | Engineering machinery, scaling ladder and tail-end ladder frame of scaling ladder |
| WO2015042277A1 (en) * | 2013-09-18 | 2015-03-26 | Wing Enterprises, Incorporated | Ladders including rope and pulley system and fall protection |
| CN105980652A (en) * | 2013-09-18 | 2016-09-28 | 伟英企业有限公司 | Ladders including rope and pulley system and fall protection device |
| US9988842B2 (en) | 2013-09-18 | 2018-06-05 | Wing Enterprises, Incorporated | Ladders including rope and pulley system and fall protection device |
| CN103774982A (en) * | 2014-02-13 | 2014-05-07 | 福州市台江区振斌高效电磁聚能科技研究所 | Scaling ladder |
| CN103774982B (en) * | 2014-02-13 | 2015-10-21 | 长乐芯聚电子科技研究所 | Aerial ladder |
| EP3334889A4 (en) * | 2015-08-14 | 2018-08-08 | Branach Technology Pty Ltd | An extendable work platform |
| CN106884612A (en) * | 2017-03-01 | 2017-06-23 | 国网山东省电力公司青岛供电公司 | A kind of herringbone lift |
| CN106884612B (en) * | 2017-03-01 | 2020-03-10 | 国网山东省电力公司青岛供电公司 | Herringbone elevator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |