CN201507233U - Telescopic ladder - Google Patents
Telescopic ladder Download PDFInfo
- Publication number
- CN201507233U CN201507233U CN 200920193613 CN200920193613U CN201507233U CN 201507233 U CN201507233 U CN 201507233U CN 200920193613 CN200920193613 CN 200920193613 CN 200920193613 U CN200920193613 U CN 200920193613U CN 201507233 U CN201507233 U CN 201507233U
- Authority
- CN
- China
- Prior art keywords
- ladder
- cylinder
- pin rod
- section
- positioning pin
- 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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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
- E06C1/125—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic with tubular longitudinal members nested within each other
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- Ladders (AREA)
Abstract
The utility model relates to a telescopic ladder belonging to tools in daily life and engineering ascending, and discloses a locking device and an unlocking device. The locking device comprises a cylinder which is only provided with an opening, a locating pin rod can be moveably arranged in the cylinder, the lateral wall of the cylinder is provided with an opened groove, the end head of a cross pin which is arranged on and is perpendicular to the locating pin rod extends out of the opened groove, the tail end of the locating pin rod is fixed with a return spring, a penetration circular hole is respectively arranged on upper and lower positions of left and right struts on other ladder sections except the top ladder section, the unlocking device comprises an unlocking pulling piece, a transmission rod and a connection block, the unlocking pulling piece is respectively arranged on the lateral face of the upper end of the left and the right struts of each ladder section except the bottom ladder section, the connection block is fixed on ladder steps through a rotation shaft, one end of the connection block is connected with the cross pin, the other end is connected with the lower end of the transmission rod hidden in the strut, and the upper end of the transmission rod is connected with the unlocking pulling piece. The telescopic ladder has the advantages of convenient extension or shortening, simple configuration, easy assembling and maintenance, good safety performance and convenient utilization.
Description
Technical field
The utility model relates to the climb to a higher point apparatus of usefulness of daily life, engineering.
Background technology
Ladder is the essential articles for use in people's daily life, the Industrial Engineering, and it is very long that ladder has, and is moving, causing when storing inconvenience like this, just have for this reason ladder manufacturers design telescopic ladder.Elongation when this class ladder uses, time spent withdrawal and shortening, no matter move, store just very convenient, so be subjected to user's welcome.
Represent the Collapsible ladder of the many this mirrors of looking in the distance of also having of such technology, their pillar is made up of the pipe of different-diameter closed section, but there is structural weakness inevitably in this ladder, material specification is many, quality of fit requires high, and the process and assemble operation is loaded down with trivial details, causes the cost height undoubtedly, the fault rate height, maintenance difficulty is big.This type of ladder also has a serious potential safety hazard in addition, exactly in the time the ladder of opening will being closed, the user need squat down and with the hands buttress the pillar that the ladder of opening descends section of ladder most, the ladder that cause is opened is very high, and the position of two-handed hand-held is very low, the both hands thumb also will stretch out and draw unlock switch, very easily causes ladder to keep incessantly balance and falls down to smash and hurt sb.'s feelings.
Summary of the invention
The purpose of this utility model provides a kind of extension ladder, and it can elongate or shorten easily, and simple structure, assembles easily and keeps in repair, and security performance is good, and is easy to use, and cost is relatively low.
Technical solution of the present utility model is on the basis of existing can be upper and lower flexible each section of ladder, and of the present utility model particularly have locking device and a tripper.Described locking device is each cover at the two ends of all the other each steps except that the highest and lowest step of ladder, locking device comprises the cylinder of a horizontally set, horizontal cylinder secured in parallel is on step, one end closure of described cylinder, its outside other end is uncovered and inserts a polarized latch that can move horizontally, the side-walls of cylinder have one with the consistent open slot of cylinder center's axis direction, the middle section of positioning pin rod is provided with and the axial vertical lateral pin of positioning pin rod, stretch out from described cylinder side wall open slot described lateral pin termination, an end place at the end is provided with back-moving spring in the described cylinder, on the described back-moving spring stationary positioned pin rod tail end, except that going up most a section of ladder, the left side of all the other section of ladders, on the right pillar, following place is provided with and can makes positioning pin rod insert the circular hole that runs through of locking;
Described tripper comprises that release pulls out sheet, drive link, contiguous block, described release is pulled out sheet and is arranged on the left and right pillar upper end lateral surface that removes to descend most all the other each section of ladders of section of ladder place, described contiguous block is fixed on the step by turning cylinder, one end of contiguous block is connected with the lateral pin on the positioning pin rod, the other end of contiguous block is connected with the lower end of drive link in being built in pillar, and the upper end of drive link is pulled out sheet with release and linked to each other.
The above runs through circular hole and adapts from strut end head distance and positioning pin rod on the step.
The utility model has the advantages that and can elongate or shorten easily, and simple structure, to assemble easily and keep in repair, security performance is good, and is easy to use, and cost is relatively low.
Description of drawings
Fig. 1 is the organigram that the utility model opens and uses;
Fig. 2 is the structural representation of the utility model section of ladder fixing and locking device and tripper;
Fig. 3 is that the whole ladder of the utility model cuts out the back schematic diagram.
The specific embodiment
According to Fig. 1,2, shown in 3, the utility model is on existing energy, down on the basis of each flexible section of ladder, the utility model particularly has locking device and tripper, described locking device is each cover at the two ends of all the other each steps except that the highest and lowest step of ladder, locking device comprises the cylinder 3 of a horizontally set, horizontal cylinder 3 secured in parallel are on step 2, one end closure of described cylinder, its outside other end is uncovered and inserts a polarized latch that can move horizontally 4, the side-walls of cylinder have one with the consistent open slot of cylinder center's axis direction, the middle section of positioning pin rod is provided with and the axial vertical lateral pin 5 of positioning pin rod, stretch out from described cylinder side wall open slot described lateral pin 5 terminations, an end place at the end is provided with back-moving spring 6 in the described cylinder, described back-moving spring 6 is fixed on positioning pin rod 4 tail ends, except that going up most a section of ladder, the left side of all the other section of ladders, on the right pillar 1, following place be provided with can make that positioning pin rod inserts locking run through circular hole 7; Running through circular hole 7 adapts from pillar 1 end distance and positioning pin rod 3 on the step.
Described tripper comprises that release pulls out sheet 9, drive link 10, contiguous block 11, described release is pulled out sheet 9 and is arranged on the left and right pillar 1 upper end lateral surface that removes to descend most all the other each section of ladders of section of ladder place, described contiguous block 11 is fixed on the step 2 by turning cylinder 12, one end of contiguous block 11 is connected with lateral pin 5 on the positioning pin rod 3, the other end of contiguous block 11 is connected with the lower end of drive link 10 in being built in pillar, and the upper end of drive link 10 is pulled out sheet 9 with release and linked to each other.
Locking device structure and operating principle: locking device is at ladder open mode and the closed condition locking ladder that all can work, when opening ladder, section of ladder rise on positioning pin rod (4) and the pillar (1) circular hole (7) over against the time, positioning pin rod (4) promptly can insert in the circular hole (7) automatically by the effect of spring (6), thereby the locking section of ladder can not fall, and continues to open all the other section of ladders to reaching the height that needs; When closing ladder, section of ladder drop on positioning pin rod (4) and the pillar (1) circular hole (8) over against the time, positioning pin rod (4) promptly can insert in the circular hole (8) automatically by the effect of spring (5), thereby locking section of ladder, mention and move Shi Buhui and draw back, continue to close all the other section of ladders as required because of deadweight.
Tripper: all need to implement earlier unlocking operation when ladder is become open mode or become closed condition by open mode by closed condition, the active force that rotation by contiguous block (11) promptly drives positioning pin rod (4) antagonistic spring (6) from the pillar (1) circular hole (7) or (8) in withdraw from, ladder can open or close as required.
The utility model extension ladder becomes closed condition from duty, and sheet is pulled out in a release that only needs upwards stir the left and right pillar outside step by step simultaneously, and ladder will be closed step by step, and the ladder after closing is mentioned to move also and can not opened automatically because of deadweight; Become the duty of expansion as the ladder with closed condition, the same release that only needs upwards to stir simultaneously step by step the left and right pillar outside is pulled out sheet and is upwards mentioned the locking that puts in place of section of ladder to positioning pin rod and gets final product.The utility model can elongate or shorten easily, structure, simple to operate, assembling and maintenance easily, security performance is good, different with other manual release extension ladder is that the lateral surface of sheet design and installation at pillar pulled out in release, and after implementing the release action, the following section of ladder in manual mode operation position is closed downwards, and the above part in manual mode operation position can not move, thereby eliminated the above part in manual mode operation position when other manual mode extension ladder cuts out and fallen the common fault of pounding hand, easy to use, cost is relatively low, is a kind of at the breakthrough novel telescopic ladder of safety operation control tool.
Fig. 3 represents the portable storage state after the whole ladder of ladder cuts out.
Claims (2)
1. extension ladder, comprise on the energy, each flexible down section of ladder, it is characterized in that having locking device and tripper, described locking device is each cover at the two ends of all the other each steps except that the highest and lowest step of ladder, locking device comprises the cylinder of a horizontally set, horizontal cylinder secured in parallel is on step, one end closure of described cylinder, its outside other end is uncovered and inserts a polarized latch that can move horizontally, the side-walls of cylinder have one with the consistent open slot of cylinder center's axis direction, the middle section of positioning pin rod is provided with and the axial vertical lateral pin of positioning pin rod, stretch out from described cylinder side wall open slot described lateral pin termination, an end place at the end is provided with back-moving spring in the described cylinder, described back-moving spring is fixed on the positioning pin rod tail end, except that going up most a section of ladder, the left side of all the other section of ladders, on the right pillar, following place is provided with and can makes positioning pin rod insert the circular hole that runs through of locking;
Described tripper comprises that release pulls out sheet, drive link, contiguous block, described release is pulled out sheet and is arranged on the left and right pillar upper end lateral surface that removes to descend most all the other each section of ladders of section of ladder place, described contiguous block is fixed on the step by turning cylinder, one end of contiguous block is connected with the lateral pin on the positioning pin rod, the other end of contiguous block is connected with the lower end of drive link in being built in pillar, and the upper end of drive link is pulled out sheet with release and linked to each other.
2. extension ladder according to claim 1 is characterized in that the described circular hole that runs through adapts from strut end head distance and positioning pin rod on the step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920193613 CN201507233U (en) | 2009-08-28 | 2009-08-28 | Telescopic ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920193613 CN201507233U (en) | 2009-08-28 | 2009-08-28 | Telescopic ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201507233U true CN201507233U (en) | 2010-06-16 |
Family
ID=42468361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920193613 Expired - Fee Related CN201507233U (en) | 2009-08-28 | 2009-08-28 | Telescopic ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201507233U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003136A (en) * | 2010-10-28 | 2011-04-06 | 王万兴 | Locking structure for telescopic ladder |
| WO2017215271A1 (en) * | 2017-01-10 | 2017-12-21 | 潘跃进 | Telescopic ladder |
| CN109306847A (en) * | 2018-09-20 | 2019-02-05 | 深圳市奈士迪技术研发有限公司 | A kind of stable type fire-fighting rack |
| CN110344746A (en) * | 2019-04-29 | 2019-10-18 | 珠海五八科技有限公司 | A kind of convenient and fast extension ladder of operation |
-
2009
- 2009-08-28 CN CN 200920193613 patent/CN201507233U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003136A (en) * | 2010-10-28 | 2011-04-06 | 王万兴 | Locking structure for telescopic ladder |
| CN102003136B (en) * | 2010-10-28 | 2012-09-12 | 王万兴 | Locking structure for telescopic ladder |
| WO2017215271A1 (en) * | 2017-01-10 | 2017-12-21 | 潘跃进 | Telescopic ladder |
| CN109306847A (en) * | 2018-09-20 | 2019-02-05 | 深圳市奈士迪技术研发有限公司 | A kind of stable type fire-fighting rack |
| CN109306847B (en) * | 2018-09-20 | 2020-09-22 | 浙江华疆科技有限公司 | Stable form fire ladder |
| CN110344746A (en) * | 2019-04-29 | 2019-10-18 | 珠海五八科技有限公司 | A kind of convenient and fast extension ladder of operation |
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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 |
Granted publication date: 20100616 Termination date: 20180828 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |