CN201228415Y - Elevator apparatus for tensile stairs - Google Patents
Elevator apparatus for tensile stairs Download PDFInfo
- Publication number
- CN201228415Y CN201228415Y CNU2008201187176U CN200820118717U CN201228415Y CN 201228415 Y CN201228415 Y CN 201228415Y CN U2008201187176 U CNU2008201187176 U CN U2008201187176U CN 200820118717 U CN200820118717 U CN 200820118717U CN 201228415 Y CN201228415 Y CN 201228415Y
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- CN
- China
- Prior art keywords
- connecting rod
- tension spring
- stair
- framework
- cover plate
- 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 hoisting device of a stretching stair, which comprises a cover board, a framework, a stair assembly part and a pneumatic tension spring. The cover board is arranged at the lower part of the framework, the upper end of the pneumatic tension spring is connected with the framework through a fixing frame, the lower stretching end of the pneumatic tension spring is connected with a connecting rod, one end of the connecting rod is connected with the cover board through fixing frame of the connecting rod, and the other supporting end of the connecting rod is connected with the middle part position of the stair assembly part; a limiting column is arranged at the lower part of the fixing frame of the connecting rod in the connected position of the cover board and the connecting rod, and a limiting and adjusting screw is arranged on the limiting column. The hoisting device has the advantages that the structure is stable, the pneumatic tension spring is adopted to replace the traditional mechanical tension spring, the fatigue resistance is enhanced, the quantity for longitudinal stretching can be more than twenty thousands, the service life is prolonged, and the operation is easy and free.
Description
Technical field
The utility model relates to a kind of lifting gear of the stair that stretch.
Background technology
The stretching stair can be widely used in garage, loft etc. can't be provided with the fixedly zone of stair, can save the space.Existing stretching stair generally adopt extension spring to make up to make and himself move up and down, because the draw ratio of extension spring is more frequent along with increasing gradually of access times, then be very easy to produce soft situation, thereby lose the effect of original power-assisted and cushion effect, finally cause shorten greatly application life.Therefore, in use, this kind structure fatigue resistance deficiency, up and down the pulling number of times limited; Adopt the stable bad of extension spring material, the long-term phenomenon that occurs fracture easily of using; In addition, because this class spring configuration do not have certain novelty, in use because the restriction of the material of spring own makes discontinuity when stretching.
The utility model content
The purpose of this utility model provides a kind of lifting gear of the stair that stretch, and adopts extension spring structural instability, fatigue resistance is relatively poor, application life is short deficiency to overcome existing product.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of lifting gear of the stair that stretch, comprise cover plate, framework, stair composite member, gas tension spring, the bottom of described framework is provided with cover plate, the upper end of described gas tension spring is connected on the framework by fixed support, the flexible end in the bottom of described gas tension spring is connected with connecting rod, one end of connecting rod is connected with cover plate by the connecting rod fixed support, and another support end of connecting rod connects the medium position of stair composite member; Described stair composite member is an arc chain link structure; The connecting rod fixed support bottom of described cover plate and connecting rod junction is provided with limited post, and limited post is provided with spacing adjustment screw.
The beneficial effect of the lifting gear of stretching stair described in the utility model is: Stability Analysis of Structures, employing gas tension spring replace traditional mechanical extension spring, and the number of times that strengthened fatigue resistance, stretches up and down can reach more than 20,000 times, prolong application life; Leicht fallen D/A, free and relaxed in the use.
Description of drawings
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the structural representation of the lifting gear of the described stretching stair of the utility model embodiment;
Fig. 2 is the jacking condition schematic diagram of the lifting gear of the described stretching stair of the utility model embodiment;
Fig. 3 is the local enlarged diagram of 2-1 part among Fig. 2.
Among the figure:
1, cover plate; 2, framework; 3, fixed support; 4, stair composite member; 5, connecting rod fixed support; 6, connecting rod; 7, gas tension spring; 8, spacing adjustment screw; 9, limited post.
The specific embodiment
As Fig. 1, Fig. 2, shown in Figure 3, the lifting gear of the described stretching stair of the utility model embodiment, comprise cover plate 1, framework 2, stair composite member 4, gas tension spring 7, the bottom of described framework 2 is provided with cover plate 1, the upper end of described gas tension spring 7 is connected on the framework 2 by fixed support 3, the flexible end in the bottom of described gas tension spring 7 is connected with connecting rod 6, one end of connecting rod 6 is connected with cover plate 1 by connecting rod fixed support 5, and another support end of connecting rod 6 connects the medium position of stair composite member 4; Described stair composite member 4 is an arc chain link structure.Described cover plate 1 is provided with limited post 9 with connecting rod fixed support 5 bottoms of connecting rod 6 junctions, and limited post 9 is provided with spacing adjustment screw 8 for use in the extending range of adjusting and limit gas tension spring 7, thereby reaches the effect of adjusting the stair height; Adopt that the gas tension spring has strengthened fatigue resistance, the number of times that stretches up and down can reach more than 20,000 times, prolong application life.
Claims (1)
1, a kind of lifting gear of the stair that stretch, comprise cover plate (1), framework (2), stair composite member (4), gas tension spring (7), the bottom of framework (2) is provided with cover plate (1), it is characterized in that: the upper end of described gas tension spring (7) is connected on the framework (2) by fixed support (3), the flexible end in the bottom of described gas tension spring (7) is connected with connecting rod (6), one end of connecting rod (6) is connected with cover plate (1) by connecting rod fixed support (5), and another support end of connecting rod (6) connects the medium position of stair composite membeies (4); Described cover plate (1) is provided with limited post (9) with connecting rod fixed support (5) bottom of connecting rod (6) junction, and limited post (9) is provided with spacing adjustment screw (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201187176U CN201228415Y (en) | 2008-06-03 | 2008-06-03 | Elevator apparatus for tensile stairs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201187176U CN201228415Y (en) | 2008-06-03 | 2008-06-03 | Elevator apparatus for tensile stairs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201228415Y true CN201228415Y (en) | 2009-04-29 |
Family
ID=40633366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201187176U Expired - Fee Related CN201228415Y (en) | 2008-06-03 | 2008-06-03 | Elevator apparatus for tensile stairs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201228415Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362327A (en) * | 2013-07-31 | 2013-10-23 | 国家电网公司 | Staircase built-in fully-guarded intelligent power distribution station transformer |
| CN103774808A (en) * | 2014-01-21 | 2014-05-07 | 沙洲职业工学院 | Electric extension ladder with handrail |
-
2008
- 2008-06-03 CN CNU2008201187176U patent/CN201228415Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362327A (en) * | 2013-07-31 | 2013-10-23 | 国家电网公司 | Staircase built-in fully-guarded intelligent power distribution station transformer |
| CN103362327B (en) * | 2013-07-31 | 2016-06-29 | 国家电网公司 | Staircase built-in fully-guarded intelligent power distribution station transformer |
| CN103774808A (en) * | 2014-01-21 | 2014-05-07 | 沙洲职业工学院 | Electric extension ladder with handrail |
| CN103774808B (en) * | 2014-01-21 | 2016-01-20 | 沙洲职业工学院 | A kind of electric expansion stair of Armrest |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20170603 |