CN105927138A - Retractable ladder - Google Patents
Retractable ladder Download PDFInfo
- Publication number
- CN105927138A CN105927138A CN201610446912.0A CN201610446912A CN105927138A CN 105927138 A CN105927138 A CN 105927138A CN 201610446912 A CN201610446912 A CN 201610446912A CN 105927138 A CN105927138 A CN 105927138A
- Authority
- CN
- China
- Prior art keywords
- ladder
- ladder bars
- rod
- vertical
- screw
- 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.)
- Granted
Links
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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
- E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
- E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
- E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/02—Extending means
- E06C7/04—Hand-operated extending means carried by the ladder
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/42—Ladder feet; Supports therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The invention discloses a retractable ladder and belongs to the field of appliances. The retractable ladder comprises a group of vertical parallelogram connecting rod components and ladder rods, pins on two sides of the vertical parallelogram connecting rod components are lengthened forwards, horizontal ladder rods square in section sleeve the lengthened portions, front-back through slide grooves are formed in left and right ends of every ladder rod symmetrically, and every ladder rod is connected with the corresponding pins by sleeving the lengthened portions of the pins by the slide grooves in two ends of the ladder rod. Two vertical screw holes opposite in screwing direction are formed in the middles of a lower middle pair of ladder rods respectively, a vertical screw rod matched with each of the screw holes is connected in the screw hole in a threaded manner, a hand wheel is mounted in the middle of each screw rod, a vertical through hole is formed in the middle of each of the other ladder rods, and a supporting leg is connected at each of two ends of the bottom ladder rod. The retractable ladder is small in size and portable.
Description
Technical field
The present invention is relevant with apparatus, specifically refers to a kind of extension ladder for ascending a height.
Background technology
Ladder is that one uses apparatus of climbing to a higher point widely, reduce its gabarit length dimension people for the ease of portable and be made that there is the ladder of folder function, the mode folded is varied, turnover type is had to have drawing and pulling type and rod-pulling type etc., but the reduction for this kind of its length of ladder of manual adjustment is the most limited, general not less than 1/2, need to eliminate and improve.
Summary of the invention
The purpose of the present invention is to provide the new technical scheme extension ladder of a kind of ladder, and it can solve aforesaid problem.
The content of technical solution of the present invention is as follows: it comprises the parallelogram connection-rod assembly of one group of vertically-arranged, ladder bars, the bearing pin of described parallelogram connection-rod assembly two side ends all makees the lengthening processing of forward direction, the part lengthened all is overlapped the ladder bars wearing the horizontal device that cross section is square, chute the most penetrating before and after what the left and right two-end part of ladder bars was symmetrical be respectively machined with one section, the connection of ladder bars and bearing pin is through the elongated portion of the chute at ladder bars two ends and the bearing pin of homonymy and is set on and comes together to realize；Middle part in about one group two ladder bars on the lower is machined with each one of the contrary vertical screw of the hand of spiral, screw female thread is connected to a matched vertical screw mandrel, the middle part device of screw mandrel has a handwheel, and other ladder bars beyond this group ladder bars are all machined with vertical perforation in middle part；A supporting leg is respectively connected at the two ends of a ladder bars bottom.
The invention has the beneficial effects as follows: ladder can be retracted to the shortest state, it is simple to portable, be the useful improvement of this apparatus of ladder.
Accompanying drawing illustrates:
Fig. 1 is the front view of the design ladder.
Fig. 2 is left side view.
In each figure, 1 is ladder bars, and 2 is bearing pin, and 3 is chute, and 4 is parallelogram connection-rod assembly, and 5 is perforation, and 6 is screw mandrel, and 7 is screw, and 8 is handwheel, and 9 is supporting leg.
Detailed description of the invention:
Explanation for example to the design below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, the design comprises the parallelogram connection-rod assembly 4 of one group of vertically-arranged, ladder bars 1, the bearing pin 2 of described parallelogram connection-rod assembly two side ends all makees the lengthening processing of forward direction, the part lengthened all is overlapped the ladder bars 1 wearing the horizontal device that cross section is square, chute 3 the most penetrating before and after what the left and right two-end part of ladder bars was symmetrical be respectively machined with one section, the elongated portion of chute 3 and the bearing pin of homonymy that the connection of ladder bars 1 and bearing pin 2 is through ladder bars two ends is set on comes together to realize；Middle part in about one group two ladder bars on the lower is machined with each one of the contrary vertical screw 7 of the hand of spiral, this group ladder bars in diagram is the 3rd, the 4th ladder bars counted from the bottom up, position is a little so that operating on the lower, it is connected to a matched vertical screw mandrel 6 at screw 7 female thread, the middle part device of screw mandrel has a handwheel 8, this group ladder bars beyond other ladder bars the most thereon with under each ladder bars be all machined with vertical perforation 5 in middle part so that when ladder reclaims receiving screw mandrel 6；Meanwhile, the two ends in a ladder bars bottom respectively connect a supporting leg 9 so that entirety obtains stable support.When concrete operations use, trail by rotating handwheel or contract the nearly 3rd, the spacing of four ladder bars, owing to the thread rotary orientation of screw is contrary, rotate handwheel can obtain upper and lower ladder bars while away from or the most close, and the construction features of parallelogram connection-rod assembly can be by the duplication in each group of connecting rod assembly of this synchronized movement, this telescopic variation process is also the bearing pin process that horizontally slips in chute, the height of the most whole ladder will elongate or shorten in the acceleration of simultaneously equimultiple, so that ladder obtains use state and the recovery state of cripetura of elongation, fully meet the different needs of portable and use, it it is the useful improvement of this apparatus of ladder, in general, the ladder of this kind of structure can obtain the cripetura amount more than more than 3/4, greatly facilitate the needs of portable.
Claims (1)
1. an extension ladder, it comprises the parallelogram connection-rod assembly of one group of vertically-arranged, ladder bars, it is characterized in that the bearing pin of described parallelogram connection-rod assembly two side ends all makees the lengthening processing of forward direction, the part lengthened all is overlapped the ladder bars wearing the horizontal device that cross section is square, chute the most penetrating before and after what the left and right two-end part of ladder bars was symmetrical be respectively machined with one section, the connection of ladder bars and bearing pin is through the elongated portion of the chute at ladder bars two ends and the bearing pin of homonymy and is set on and comes together to realize；Middle part in about one group two ladder bars on the lower is machined with each one of the contrary vertical screw of the hand of spiral, screw female thread is connected to a matched vertical screw mandrel, the middle part device of screw mandrel has a handwheel, and other ladder bars beyond this group ladder bars are all machined with vertical perforation in middle part；A supporting leg is respectively connected at the two ends of a ladder bars bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610446912.0A CN105927138B (en) | 2016-06-18 | 2016-06-18 | Extension ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610446912.0A CN105927138B (en) | 2016-06-18 | 2016-06-18 | Extension ladder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105927138A true CN105927138A (en) | 2016-09-07 |
| CN105927138B CN105927138B (en) | 2017-07-28 |
Family
ID=56830685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610446912.0A Active CN105927138B (en) | 2016-06-18 | 2016-06-18 | Extension ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105927138B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005567A (en) * | 2018-01-30 | 2018-05-08 | 张凤菊 | A kind of extension ladder |
| CN108150086A (en) * | 2018-01-30 | 2018-06-12 | 张凤菊 | A kind of ladder |
| CN108561065A (en) * | 2018-01-30 | 2018-09-21 | 张凤菊 | A kind of Household ladder |
| CN109042558A (en) * | 2018-10-29 | 2018-12-21 | 罗城仫佬族自治县群富种养农民专业合作社 | Silkworm frame |
| CN109538109A (en) * | 2018-11-13 | 2019-03-29 | 张磊 | A kind of pedal lift easy to use |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2400567Y (en) * | 1999-11-09 | 2000-10-11 | 吴盛福 | Extension ladder |
| JP2006052603A (en) * | 2004-08-16 | 2006-02-23 | Takanori Hatanaka | Expansible structure, foldable ladder, foldable support, foldable instrument, and foldable pipe |
| CN201627531U (en) * | 2010-02-10 | 2010-11-10 | 符宏军 | Expansion folding ladder |
| CN201818232U (en) * | 2010-09-19 | 2011-05-04 | 北京工业大学 | Emergency telescopic ladder with non-return function |
| CN204040882U (en) * | 2014-08-15 | 2014-12-24 | 祝建飞 | A kind of folding ladder |
-
2016
- 2016-06-18 CN CN201610446912.0A patent/CN105927138B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2400567Y (en) * | 1999-11-09 | 2000-10-11 | 吴盛福 | Extension ladder |
| JP2006052603A (en) * | 2004-08-16 | 2006-02-23 | Takanori Hatanaka | Expansible structure, foldable ladder, foldable support, foldable instrument, and foldable pipe |
| CN201627531U (en) * | 2010-02-10 | 2010-11-10 | 符宏军 | Expansion folding ladder |
| CN201818232U (en) * | 2010-09-19 | 2011-05-04 | 北京工业大学 | Emergency telescopic ladder with non-return function |
| CN204040882U (en) * | 2014-08-15 | 2014-12-24 | 祝建飞 | A kind of folding ladder |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005567A (en) * | 2018-01-30 | 2018-05-08 | 张凤菊 | A kind of extension ladder |
| CN108150086A (en) * | 2018-01-30 | 2018-06-12 | 张凤菊 | A kind of ladder |
| CN108561065A (en) * | 2018-01-30 | 2018-09-21 | 张凤菊 | A kind of Household ladder |
| CN108005567B (en) * | 2018-01-30 | 2019-11-19 | 泉州台商投资区一创工业设计有限公司 | A kind of telescopic ladder |
| CN108561065B (en) * | 2018-01-30 | 2020-03-27 | 张凤菊 | Household ladder |
| CN109042558A (en) * | 2018-10-29 | 2018-12-21 | 罗城仫佬族自治县群富种养农民专业合作社 | Silkworm frame |
| CN109538109A (en) * | 2018-11-13 | 2019-03-29 | 张磊 | A kind of pedal lift easy to use |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105927138B (en) | 2017-07-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201229 Address after: Room 402, 4th floor, East, 125 zhenzhuhu Road, Weitang Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: Suzhou Xingwei state owned Assets Management Co., Ltd Address before: 322000 no.9-7, District 1, Jiangdong District, Yiwu City, Jinhua City, Zhejiang Province Patentee before: Chen Shuo |
|
| TR01 | Transfer of patent right |