CN201850992U - Mortise and tenon type steel straight ladder - Google Patents
Mortise and tenon type steel straight ladder Download PDFInfo
- Publication number
- CN201850992U CN201850992U CN2010205097231U CN201020509723U CN201850992U CN 201850992 U CN201850992 U CN 201850992U CN 2010205097231 U CN2010205097231 U CN 2010205097231U CN 201020509723 U CN201020509723 U CN 201020509723U CN 201850992 U CN201850992 U CN 201850992U
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- Prior art keywords
- mortise
- roller
- pedal
- column
- vertical ladder
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- Expired - Fee Related
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Abstract
The utility model discloses a mortise and tenon type steel straight ladder. Mortise holes (4) are formed at corresponding positions of two upright posts (1) according to the shape of the outer edge of a pedal (3) and respectively inserted and pass through two ends of the pedal (3) through the inner sides of the upright posts (3); the end parts of the pedal (3) extend out of the outer sides of the upright posts (1); and flanges (5) are fixed at the end parts of the pedal (3). The upright posts (1) are mounted and fastened with the pedal (3) by adopting a mortise and tenon structure; the whole body is subjected to cold processing without welding; the mortise and tenon type steel straight ladder has high integral structural strength, is firm, durable and safe and suitable for standard industrial production and manufacture; in addition, the mortise and tenon type steel straight ladder is concise and attractive in appearance, has no weld seam, can adapt to larger temperature change and meet the work requirement for higher strength, is convenient for installation, use and transportation and is suitable for popularization.
Description
Technical field:
The utility model relates to vertical ladder device, especially the mortise and tenon formula steel vertical ladder that a kind of steel are made.
Background technology:
At present, vertical ladder is widely used in various fields as a kind of time-honored climbing instrument, such as at the fixing vertical ladder of the Li Tanei of large-scale wind generating equipment, the aluminum vertical ladder that adopts a kind of prior art to make exactly, though material is lighter, but owing to can't use welding procedure, if the employing screw rod is installed then is had the not good enough deficiency of fastening degree, therefore only can adopt cuttage anchoring manufacturing, but because aluminium hardness is low slightly, the low temperature tolerance is lower, phenomenons such as fracture can appear in embrittlement when temperature was low in the winter time, there is hidden danger, in addition, the vertical ladder of selecting for use steel to make, the general employing welded manufacturing, exist under the condition of special requirement, because also there is big potential safety hazard in the material structure Strength Changes that welding causes, and since physical property such as hardness and aluminium extruded sections differ greatly, take the tenon structure of aluminum vertical ladder also to have many difficulties, therefore, it is open still not have correlation technique.
Summary of the invention:
The purpose of this utility model provides a kind of tenon structure steel vertical ladder, i.e. mortise and tenon formula steel vertical ladder.
Realize that the measure of the present utility model purpose comprises: two column correspondence positions are opened mortise to step on roller end face outer rim shape, step on the roller two ends and cross mortise from the inboard cuttage of column respectively, and the column outside is stretched out in the end, and fixing flange.
The utility model advantage: column and step on roller to adopt tenon structure to install fastening, because integral body does not adopt welding, and carries out cold working, not only overall construction intensity height, solid, durable, safety, be suitable for the manufacturing of standardization industrial production, and profile is succinctly attractive in appearance, no weld seam, can adapt to big variations in temperature, with than the hard intensity job requirement, be convenient to install, use and transport, the suitable popularization.
Description of drawings:
Fig. 1 is the structural representation of the utility model embodiment 1
Reference numeral comprises: column 1, card key 2 is stepped on roller 3, mortise 4, flange 5.
The specific embodiment:
1: two column 1 correspondence position of embodiment is opened mortise 4 to step on roller 3 end face outer rim shapes, steps on roller 3 two ends and crosses mortise 4 from column 1 inboard cuttage respectively, and column 1 outside is stretched out in the end, and fixing flange 5.
Two 1 on columns are installed a plurality of rollers 3 of stepping on and are formed vertical ladder.Column 1 and step on roller 3 and be the square tube type.Perhaps, column 1 and step on roller 3 and be tubular type.Column 1 and step on roller 3 outer walls the decorative pattern projection is arranged.These decorative pattern projections effectively increase grasping or enough frictional force are provided when foot-operated.
Step on the fixing card of connecting portion key 2 on the roller 3 in column 1 inboard.Card key 2 is 1-4.
When the utility model embodiment uses, after as required one or many vertical ladders being connected and fixed, carry out operation and use.
In the utility model, column 1 and step on roller 3 to adopt tenon structures to install fastening is not because integral body adopts welding, and carry out cold working, not only overall construction intensity height, solid, durable, safety are suitable for the manufacturing of standardization industrial production, and, profile is succinctly attractive in appearance, no weld seam can adapt to than big variations in temperature with than the hard intensity job requirement, be convenient to install, use and transport suitable the popularization.
Claims (7)
1. mortise and tenon formula steel vertical ladder, it is characterized in that two columns (1) correspondence position is opened mortise (4) to step on roller (3) end face outer rim shape, steps on roller (3) two ends and crosses mortise (4) from the inboard cuttage of column (1) respectively, column (1) outside is stretched out in the end, and fixing flange (5).
2. mortise and tenon formula steel vertical ladder as claimed in claim 1 is characterized in that, column (1) and step on roller (3) and be the square tube type.
3. mortise and tenon formula steel vertical ladder as claimed in claim 1 is characterized in that, column (1) and step on roller (3) and be tubular type.
4. mortise and tenon formula steel vertical ladder as claimed in claim 1 is characterized in that, steps on roller (3) in column (1) inboard and goes up the fixing card of connecting portion key (2).
5. mortise and tenon formula steel vertical ladder as claimed in claim 4 is characterized in that, card key (2) is 1-4.
6. mortise and tenon formula steel vertical ladder as claimed in claim 4 is characterized in that, card key (2) is and steps on the projection that roller (3) outer wall is connected as a single entity.
7. mortise and tenon formula steel vertical ladder as claimed in claim 4 is characterized in that, the card key (2) for can with step on the pin that roller (3) outer wall separates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205097231U CN201850992U (en) | 2010-08-30 | 2010-08-30 | Mortise and tenon type steel straight ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205097231U CN201850992U (en) | 2010-08-30 | 2010-08-30 | Mortise and tenon type steel straight ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201850992U true CN201850992U (en) | 2011-06-01 |
Family
ID=44093391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205097231U Expired - Fee Related CN201850992U (en) | 2010-08-30 | 2010-08-30 | Mortise and tenon type steel straight ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201850992U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622661A (en) * | 2020-05-27 | 2020-09-04 | 国网山东省电力公司龙口市供电公司 | Electric power ladder of ascending a height |
-
2010
- 2010-08-30 CN CN2010205097231U patent/CN201850992U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622661A (en) * | 2020-05-27 | 2020-09-04 | 国网山东省电力公司龙口市供电公司 | Electric power ladder of ascending a height |
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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: 20110601 Termination date: 20180830 |