CN203394336U - Extension ladder - Google Patents
Extension ladder Download PDFInfo
- Publication number
- CN203394336U CN203394336U CN201320462442.9U CN201320462442U CN203394336U CN 203394336 U CN203394336 U CN 203394336U CN 201320462442 U CN201320462442 U CN 201320462442U CN 203394336 U CN203394336 U CN 203394336U
- Authority
- CN
- China
- Prior art keywords
- standpipe
- cross bar
- extension ladder
- standpipes
- utility
- 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 - Lifetime
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Abstract
The utility model discloses an extension ladder which comprises steps, wherein each step comprises two stand pipes (1), a transverse rod (2) and two stand-pipe connecting covers (3). Both ends of the transverse rod (2) are respectively connected to the upper ends of the two stand pipes (1), and the two stand-pipe connecting covers (3) are respectively sleeved on the two stand pipes (1). Multiple steps are arranged sequentially from bottom to top. The lower ends of the two stand pipes (1) of the upper step in any two adjacent steps are respectively embedded into the two stand pipes (1) of lower step and are connected through a positioning piece (5). With the adoption of the structure, the extension ladder is simple in integral structure, convenient to implement and low in cost. The extension ladder disclosed by the utility model can be stretched when in use, so that the extension ladder is further convenient to manage and carry.
Description
Technical field
Aid when the utility model relates to Operation of Electric Systems maintenance and maintenance, specifically extension ladder.
Background technology
Along with industrial expansion, all trades and professions improve day by day to the requirement of the power supply reliability of power system and stability, therefore Operation of Electric Systems are safeguarded and are overhauled particularly important.For antitheft and avoid artificial damage, people are suspended on compare Gao position by some power equipments, and maintainer overhauls the ladder that the higher power equipment of suspension is used the use of ascending a height often
.the ladder of the existing use of ascending a height is that two vertical rods constitute with the many cross bars as pedal, and cross bar is fixed in vertical rod and can not be shifted, and vertical rod length has determined the stroke of ladder.Although existing ladder is simple and practical, yet it occupies a large amount of spaces while placing, and carries inconvenience when maintainer goes out to overhaul.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of saving to take up an area space, extension ladder easy to carry.
The purpose of this utility model is achieved through the following technical solutions: extension ladder, comprise step, described step comprises two standpipes, a cross bar and two standpipe adapter sleeves, and described cross bar two ends are connected to two standpipe upper ends, and two standpipe adapter sleeves are sheathed on respectively on two standpipes; The quantity of described step is multistage, and multistage step sets gradually from the bottom to top, in arbitrary neighborhood two-stage step top step two standpipe lower ends embed respectively below step two standpipes in and by keeper, connect.
For the ease of cross bar is connected on standpipe, the two ends of described cross bar are all connected with cross bar adapter sleeve, and the cross bar in every grade of step is set in respectively on two standpipes and is connected with standpipe by two cross bar adapter sleeves.When concrete application, in order to strengthen the syndeton of cross bar and standpipe, between cross bar and standpipe, also by screw, be fixedly connected with.
In every grade of step, each cross bar adapter sleeve lower surface contacts with the standpipe adapter sleeve upper surface that it is set on same standpipe.So, cross bar is when stressed, and standpipe adapter sleeve has supporting role to cross bar adapter sleeve.
The cross bar lower surface of described multistage step first order step is from the bottom to top connected with positioning rope and around ring.
In order to prevent that the utility model application from time occurring skidding, two standpipe lower ends of described multistage step first order step are from the bottom to top arranged with Anti-slip cover.
As preferably, the material of described Anti-slip cover is rubber.
As preferably, described keeper is threaded rod, on the sidewall at the every upper and lower two ends of standpipe, is equipped with screwed hole, and arbitrary neighborhood two-stage step is connected with the screwed hole of top step standpipe through the screwed hole of below step standpipe successively by threaded rod.
Compared with prior art, the utlity model has following beneficial effect: (1) the utility model comprises the multistage step arranging from the bottom to top, wherein, every grade of step includes two standpipes, cross bar and connect two standpipe adapter sleeves of cross bar and standpipe, neighbouring two-stage step connects by keeper, the utility model overall structure is simple, be convenient to realize, cost is low, when being used, the utility model can not take off keeper, and then the standpipe of higher level's step is embedded in the standpipe of subordinate's step, overall volume diminishes, save and take up an area space, and easy to carry when maintainer goes out, the utility model Ke Dui position step stretches, and then the stroke while changing the utility model application.
(2) the cross bar lower surface of the utility model first order step is from the bottom to top connected with positioning rope and around ring, when the utility model is not used, can the cross bar of all steps be fastened by positioning rope, so, more convenient when the utility model is moved; During the utility model application, positioning rope can be wrapped in around ring above, in the time of avoiding maintainer's operation, maintainer be caused and impeded, eliminate safe hidden trouble.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
In accompanying drawing, the corresponding name of Reference numeral is called: 1, standpipe, 2, cross bar, 3, standpipe adapter sleeve, 4, cross bar adapter sleeve, 5, keeper, 6, positioning rope, 7, around ring, 8, Anti-slip cover.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment
As shown in Figure 1, extension ladder, comprise the multistage step setting gradually from the bottom to top, wherein, every grade of step includes two standpipes 1, cross bar 2 and two standpipe adapter sleeves 3, two standpipe adapter sleeves 3 are sheathed on respectively on two standpipes 1, and in arbitrary neighborhood two-stage step, the caliber of top step standpipe 1 is less than the caliber of below step standpipe 1, and in arbitrary neighborhood two-stage step, two standpipe 1 lower ends of top step embed respectively in two standpipes 1 of below step and connect by keeper 5.The two ends of cross bar 2 are all connected with cross bar adapter sleeve 4, and the cross bar 2 in every grade of step is set in respectively two standpipe 1 upper ends by two cross bar adapter sleeves 4 and is connected with standpipe 1, and then cross bar 2 two ends are connected to two standpipe 1 upper ends.In every grade of step, each cross bar adapter sleeve 4 lower surface contacts with standpipe adapter sleeve 3 upper surfaces that it is set on same standpipe 1.
The preferential threaded rod that adopts of keeper 5 in the present embodiment, on the sidewall at every standpipe two ends Shang Xia 1, be equipped with screwed hole, a plurality of screwed holes of every standpipe 1 are distributed on same straight line, and arbitrary neighborhood two-stage step is connected with the screwed hole of top step standpipe 1 through the screwed hole of below step standpipe 1 successively by threaded rod.Separated in order to prevent from taking off the rear multistage step of keeper 5, cross bar 2 lower surfaces of multistage step first order step are from the bottom to top connected with positioning rope 6 and around ring 7.In order to prevent that the present embodiment application from time occurring skidding, two standpipe 1 lower ends of multistage step first order step are from the bottom to top arranged with Anti-slip cover 8, and wherein, the material of Anti-slip cover 8 is preferably rubber.
Above content is the further description of the utility model being done in conjunction with concrete preferred embodiment, can not assert that the specific embodiment of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not departing from other embodiments that draw under the technical solution of the utility model, all should be included in protection domain of the present utility model.
Claims (7)
1. extension ladder, it is characterized in that: comprise step, described step comprises two standpipes (1), a cross bar (2) and two standpipe adapter sleeves (3), described cross bar (2) two ends are connected to two standpipes (1) upper end, and two standpipe adapter sleeves (3) are sheathed on respectively on two standpipes (1); The quantity of described step is multistage, and multistage step sets gradually from the bottom to top, and in arbitrary neighborhood two-stage step, two standpipes (1) lower end of top step embeds respectively in two standpipes (1) of below step and connects by keeper (5).
2. extension ladder according to claim 1, it is characterized in that: the two ends of described cross bar (2) are all connected with cross bar adapter sleeve (4), the cross bar in every grade of step (2) is set in respectively two standpipes (1) by two cross bar adapter sleeves (4) and is above connected with standpipe (1).
3. extension ladder according to claim 2, is characterized in that: in every grade of step, each cross bar adapter sleeve (4) lower surface contacts with standpipe adapter sleeve (3) upper surface that it is set on same standpipe (1).
4. extension ladder according to claim 1, is characterized in that: cross bar (2) lower surface of described multistage step first order step is from the bottom to top connected with positioning rope (6) and around ring (7).
5. extension ladder according to claim 1, is characterized in that: two standpipes (1) lower end of described multistage step first order step is from the bottom to top arranged with Anti-slip cover (8).
6. extension ladder according to claim 5, is characterized in that: the material of described Anti-slip cover (8) is rubber.
7. according to the extension ladder described in any one in claim 1～6, it is characterized in that: described keeper (5) is threaded rod, on the sidewall at the upper and lower two ends of every standpipe (1), be equipped with screwed hole, arbitrary neighborhood two-stage step is connected with the screwed hole of top step standpipe (1) through the screwed hole of below step standpipe (1) successively by threaded rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320462442.9U CN203394336U (en) | 2013-07-31 | 2013-07-31 | Extension ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320462442.9U CN203394336U (en) | 2013-07-31 | 2013-07-31 | Extension ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394336U true CN203394336U (en) | 2014-01-15 |
Family
ID=49905872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320462442.9U Expired - Lifetime CN203394336U (en) | 2013-07-31 | 2013-07-31 | Extension ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107380074A (en) * | 2017-06-02 | 2017-11-24 | 北汽福田汽车股份有限公司 | The pedal assembly and vehicle of vehicle |
-
2013
- 2013-07-31 CN CN201320462442.9U patent/CN203394336U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107380074A (en) * | 2017-06-02 | 2017-11-24 | 北汽福田汽车股份有限公司 | The pedal assembly and vehicle of vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |