CN2804355Y - Telescopic ladder - Google Patents

Telescopic ladder Download PDF

Info

Publication number
CN2804355Y
CN2804355Y CN 200520051197 CN200520051197U CN2804355Y CN 2804355 Y CN2804355 Y CN 2804355Y CN 200520051197 CN200520051197 CN 200520051197 CN 200520051197 U CN200520051197 U CN 200520051197U CN 2804355 Y CN2804355 Y CN 2804355Y
Authority
CN
China
Prior art keywords
ladder
tubing string
section
utility
model
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
Application number
CN 200520051197
Other languages
Chinese (zh)
Inventor
杨洪建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN 200520051197 priority Critical patent/CN2804355Y/en
Application granted granted Critical
Publication of CN2804355Y publication Critical patent/CN2804355Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Abstract

The utility model relates to a telescopic ladder. A left and a right two vertical ladder columns are composed of a plurality of telescopic pipe columns slipped, overlapped and sheathed step by step, and a plurality of transverse ladder beams mutually divided and distributed are connected in the middle of the left and the right two vertical ladder columns. The upper end of each section of a left pipe column and the upper end of each section of a right pipe column are connected with both ends of a transverse ladder beam by a connecting head into a ladder section, and lantern rings for hand clamping prevention are fixedly arranged on a pipe column abutting on the lower part of the connecting head. When the utility model is stretched, the utility model is limited by a limiting snap ring fixedly connected to the lower end of a pipe column of an upper ladder section and an annular limiting clamping groove on a pipe column of a lower ladder section and positioned by inserting elastic positioning pins arranged in the connecting head into positioning pin holes on the pipe columns which are overlapped and sheathed by an inner and an outer double layers of the upper and the lower ladder sections. When the utility model is shrunk, the lantern rings for hand clamping prevention are limited between the transverse ladder beams of each ladder section to maintain a safe space for preventing hands from being clamped. The telescopic ladder of the utility model has the advantages that the utility model can be stretched for a user to uprise when used, and the utility model can be shrunk and stored when not used. Space occupation is little, the utility model can be stored in a wall cabinet, below a bed and a vehicle seat or in a back-up box, and use is convenient and flexible. The hands can be prevented from being clamped, structure is simple, and cost is correspondingly cheap.

Description

A kind of extension ladder
Technical field:
This reality is novel to relate to a kind of activity ladder of ascending a height, particularly a kind of extension ladder.
Background technology:
The ladder that the climbing eminence is used is the common tool of people's routine work and life, existing ladder mostly is and connects firmly the some terraced bars of horizontal stroke by two long struts and constitute, length immobilizes, it needs a corresponding parking space when not using, particularly long ladder, aerial ladder take up room bigger, though existing a kind of improved extension ladder can movable telescopic, solve the defective of parking space, but it is received and has serious tong problem when folding, the people is produced fear and dare not use, businessman and user all are difficult to accept, and its activity draw bail is also undesirable.
Summary of the invention:
The purpose of this utility model is to overcome the above-mentioned defective of prior art, provides a kind of structure rationally dexterous, safe in utilization, movable flexible ladder.
Technical solution of the present utility model is a kind of extension ladder, by a left side, connecting some horizontal terraced beams that are spaced from each other distribution in the middle of right two upright cleat stanchions constitutes, a left side, right upright cleat stanchion is that the nestable flexible tubing string of some slippages step by step constitutes, every joint left side, right tubing string upper end is unified into a section of ladder with the terraced beam of horizontal stroke two ends by coupling head, install anti-pinch gloves ring on the tubing string near the coupling head below, when ladder trails, spacing by spacing snap ring and the spacing draw-in groove of ring-type on next section of ladder tubing string that a last section of ladder tubing string lower end connects firmly, by being installed in the coupling head, inserts elastic positioning pin, in the following section of ladder, dowel hole location on the double-deck nestable outward tubing string; When ladder shrinks, spacing between the horizontal terraced beam of each section of ladder by anti-pinch gloves ring, keep an anti-tong safe spacing.Tubing string with the draw bail of horizontal terraced beam is: connecting first end has the tenon handle, inserting crossbeam one end connects with crossbeam, the coupling head other end has the circular arc folder, the internal circular surfaces of circular arc folder has some circular arc boss, tubing string upper end circumference has corresponding boss hole, the circular arc folder is through the bolt locking of clamp mouth part, and the circular arc folder is embraced firm tubing string, and circular arc folder boss is nested into the tubing string boss hole.The upper and lower section of ladder of upright cleat stanchion stretches location structure: be equipped with by stage clip in the tenon handle of coupling head and compress the elastic positioning pin that alignment pin constitutes, laterally be connected with control handle on the alignment pin, handle is controlled the dowel hole that alignment pin inserts inside and outside two-layer nestable barrel mast, and upper and lower section of ladder stretches the location.
Description of drawings:
Fig. 1 is extension ladder general structure contraction state figure;
Fig. 2 is two joint section of ladder extended configuration structure charts;
Fig. 3 is single-unit tubular column structure figure;
Fig. 4 is spacing snap ring structure chart;
Fig. 5 is the coupling head structure chart;
Fig. 6 is that coupling head connects figure with tubing string;
Fig. 7 is an anti-pinch gloves loops composition;
Fig. 8 is that coupling head connects figure with horizontal terraced beam;
Fig. 9 is elastic positioning pin and coupling head and a section of ladder tubing string location connection diagram in the coupling head.
The specific embodiment:
The utility model further specifies as follows in conjunction with specific embodiments referring to accompanying drawing:
A kind of extension ladder, constitute by connecting some spaced horizontal terraced beams 3 in the middle of left and right two upright cleat stanchions 1, left and right upright cleat stanchion is that the flexible tubing string 4 of the nestable step by step activity slippage of some joints constitutes, and the left and right tubing string 4 of every joint and the terraced beam 3 of horizontal stroke are connected into a section of ladder by 2 coupling heads 2.The contraction state of extension ladder general structure is referring to accompanying drawing 1, and the extended configuration of extension ladder two section of ladder structures is referring to accompanying drawing 2.Tubing string 4 is referring to accompanying drawing 3, tubing string 4 upper end circumference have 4 boss holes 8, and the lower end circumference has 2 boss holes 20, upper end and the one segment distance place apart from the lower end, dividing on the tubing string 4 has a dowel hole 14,13 in addition, on the one segment distance place tubing string of upper end a spacing draw-in groove 10 of ring-type is arranged.Tubing string 4 lower ends connect firmly spacing snap ring 11, and the round boss 21 of 2 convexes is arranged on the spacing snap ring 4, snap in the boss hole 20 of tubing string 4 lower ends, referring to accompanying drawing 2,4.
Coupling head 2 structures are referring to accompanying drawing 5, coupling head 2 one ends have tenon handle 15, the other end has circular arc folder 23, circular arc presss from both sides 23 internal circular surfaces 4 round boss 9, circular arc folder 23 clamps through the bolt 7 at folder mouthful 6 places, coupling head 2 keeps a grip on 4 by 23 armfuls of jails of circular arc folder, and referring to accompanying drawing 6, the boss 9 of circular arc folder 23 embeds the boss hole 8 of tubing string 4.
Near coupling head 2 belows, connect firmly on the tubing string 4 and take over control the tong collar 5, referring to accompanying drawing 8, anti-pinch gloves ring 5 structures are referring to accompanying drawing 7, and when section of ladder shrank, the collar 5 kept between each section of ladder a safe spacing being arranged, and can prevent tong.
The tenon handle 15 of coupling head 2 inserts horizontal terraced beam 3 one ends and connects firmly, and referring to accompanying drawing 8,9, horizontal terraced beam 3 is a box section.In the tenon pommel 15 of coupling head 2 elastic positioning pin is housed, compresses alignment pin 18 by spring 17 and constitute, laterally be connected with control handle 24 on the alignment pin 18.When upper and lower section of ladder stretched, handle 24 was controlled alignment pin 18 and is inserted dowel hole 14 on the two-layer nestable outer tubing string 4-1, and the dowel hole 13 on the internal layer tubing string 4-2, makes upper and lower two section of ladders stretch the location, referring to accompanying drawing 2,9.When section of ladder stretches, spacing with the spacing draw-in groove 10 on next section of ladder tubing string 4-2 (or 4-1) by the spacing snap ring 11 in last section of ladder tubing string 4-3 (4-2) lower end.Ladder is bundled into one through binding strap 16 with each section of ladder, referring to accompanying drawing 1 after shrinking.
Extensible the ascending a height when advantage of the utility model extension ladder is to use, not the time spent scalable deposit take up space little, can deposit in built-in wardrobe, bed down, the car seat is down or in the boot, easy to usely and can prevent tong flexibly, simple in structure, cost is cheap relatively.

Claims (2)

1, a kind of extension ladder, by a left side, connecting some horizontal terraced beams that are spaced from each other distribution in the middle of right two upright cleat stanchions constitutes, a left side, right upright cleat stanchion is that the nestable flexible tubing string of some slippages step by step constitutes, every joint left side, right tubing string upper end is unified into a section of ladder with the terraced beam of horizontal stroke two ends by coupling head, install anti-pinch gloves ring on the tubing string near the coupling head below, when ladder trails, spacing by spacing snap ring and the spacing draw-in groove of ring-type on next section of ladder tubing string that a last section of ladder tubing string lower end connects firmly, by being installed in the coupling head, inserts elastic positioning pin, in the following section of ladder, dowel hole location on the double-deck nestable outward tubing string, when it is characterized in that ladder shrinks, spacing between the horizontal terraced beam of each section of ladder by anti-pinch gloves ring, keep an anti-tong safe spacing.
2, extension ladder according to claim 1, it is characterized in that with tubing string with the draw bail of horizontal terraced beam being: connecting first end has the tenon handle, inserting crossbeam one end connects with crossbeam, the coupling head other end has the circular arc folder, the internal circular surfaces of circular arc folder has some circular arc boss, and tubing string upper end circumference has corresponding boss hole, and the circular arc folder is through the bolt locking of clamp mouth part, the circular arc folder is embraced firm tubing string, and circular arc folder boss is nested into the tubing string boss hole.
CN 200520051197 2005-06-24 2005-06-24 Telescopic ladder Expired - Fee Related CN2804355Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520051197 CN2804355Y (en) 2005-06-24 2005-06-24 Telescopic ladder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520051197 CN2804355Y (en) 2005-06-24 2005-06-24 Telescopic ladder

Publications (1)

Publication Number Publication Date
CN2804355Y true CN2804355Y (en) 2006-08-09

Family

ID=36909649

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520051197 Expired - Fee Related CN2804355Y (en) 2005-06-24 2005-06-24 Telescopic ladder

Country Status (1)

Country Link
CN (1) CN2804355Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101798902A (en) * 2010-03-17 2010-08-11 王万兴 Connecting sleeve for extension ladder
CN102465662A (en) * 2010-10-29 2012-05-23 阿禄因康株式会社 Telescoping ladder
CN103266849A (en) * 2013-06-13 2013-08-28 苏州新区华士达工程塑胶有限公司 Insulated engineering plastic folding ladder
CN107654183A (en) * 2017-09-18 2018-02-02 国网山东省电力公司烟台供电公司 Portable power meter reading ladder
CN107701086A (en) * 2017-09-18 2018-02-16 国网山东省电力公司烟台供电公司 A kind of portable power meter reading ladder

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101798902A (en) * 2010-03-17 2010-08-11 王万兴 Connecting sleeve for extension ladder
WO2011113183A1 (en) * 2010-03-17 2011-09-22 宁波兴富工具有限公司 Connecting sleeve for extension ladder
CN101798902B (en) * 2010-03-17 2013-02-06 王万兴 Connecting sleeve for extension ladder
CN102465662A (en) * 2010-10-29 2012-05-23 阿禄因康株式会社 Telescoping ladder
CN103266849A (en) * 2013-06-13 2013-08-28 苏州新区华士达工程塑胶有限公司 Insulated engineering plastic folding ladder
CN107654183A (en) * 2017-09-18 2018-02-02 国网山东省电力公司烟台供电公司 Portable power meter reading ladder
CN107701086A (en) * 2017-09-18 2018-02-16 国网山东省电力公司烟台供电公司 A kind of portable power meter reading ladder

Similar Documents

Publication Publication Date Title
CN2804355Y (en) Telescopic ladder
CN2823519Y (en) Telescopic folding v-ladder
US9278721B2 (en) System for holding in-line two wheeled vehicles
CN201574681U (en) Expansion holding pole ladder
KR101143076B1 (en) Bundle Type Ladder Platform
CN2821124Y (en) Telescopic folding handrail ladder
CN1270136A (en) Bobbin cradle
CN207177458U (en) Construction protection column
CN207177459U (en) A kind of construction protection column
AU2012101811A4 (en) Scaffolding
EP0958447B1 (en) Apparatus for positioning a tong and drilling rig provided with such an apparatus
CN208040287U (en) A kind of garden ladder that stability is good
CN214364428U (en) Improved generation steel construction cable tube combination post for construction
CN201050291Y (en) Telescopic rescuing ladder
CN206971697U (en) A kind of climbing frame with protector
CN2471879Y (en) Tent
CN200968174Y (en) Collapsible anti-theft climbing ladder
CN215107556U (en) General formula construction stair safety protective guard
CN2529945Y (en) Mobile scaffold
CN104234189B (en) A kind of four tubular truss structures of prefabricated house
CN2784510Y (en) Monotube tower with telescopic step nail and concealed outside flange
CN214402652U (en) Ascending ladder for building construction
CN2647974Y (en) Adjustable scaffold feet plate
CN201874438U (en) Telescopic stepladder
CN218265767U (en) Herringbone assembling and clamping component of triangular ladder

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
DD01 Delivery of document by public notice

Addressee: Yang Hongjian

Document name: Notification to Pay the Fees

DD01 Delivery of document by public notice

Addressee: Yang Hongjian

Document name: Notification of Termination of Patent Right

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20060809

Termination date: 20140624

EXPY Termination of patent right or utility model