WO2018084519A1 - 전동 드라이버로 길이 조절이 가능한 자동 사다리 - Google Patents

전동 드라이버로 길이 조절이 가능한 자동 사다리 Download PDF

Info

Publication number
WO2018084519A1
WO2018084519A1 PCT/KR2017/012121 KR2017012121W WO2018084519A1 WO 2018084519 A1 WO2018084519 A1 WO 2018084519A1 KR 2017012121 W KR2017012121 W KR 2017012121W WO 2018084519 A1 WO2018084519 A1 WO 2018084519A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
support
ladder
coupled
inner support
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.)
Ceased
Application number
PCT/KR2017/012121
Other languages
English (en)
French (fr)
Korean (ko)
Inventor
서동영
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 JP2019545218A priority Critical patent/JP6894524B2/ja
Priority to EP17867699.5A priority patent/EP3536891B1/en
Priority to CN201780060090.5A priority patent/CN109863281B/zh
Priority to US16/345,565 priority patent/US11225832B2/en
Publication of WO2018084519A1 publication Critical patent/WO2018084519A1/ko
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/12—Lifts or other hoisting devices on ladders
    • 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
    • E06C1/14—Ladders capable of standing by themselves
    • E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
    • E06C1/20—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles
    • E06C1/22—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles with extensible, e.g. telescopic, ladder parts or struts
    • 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
    • E06C1/14—Ladders capable of standing by themselves
    • 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
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms
    • 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
    • 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
    • E06C7/06—Securing devices or hooks for parts of extensible ladders
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/16—Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/50—Joints or other connecting parts

Definitions

  • the present invention relates to an automatic ladder capable of length adjustment, and more particularly, to a method for adjusting the length of a ladder by using a tool including an electric tool or an auxiliary handle including an electric driver.
  • the ladder is used to climb to a high place or to descend from a high place, and can be divided into a work ladder and a traffic ladder.
  • These ladders are fixedly installed with a plurality of horizontal scaffold having a vertical gap between both vertical support.
  • the ladder can support / connect between the ground and the upper floors to freely carry out various aerial work on the ladders or to move to the upper or lower floors.
  • FIG. 1 illustrates a conventional ladder.
  • a ladder is provided with a plurality of horizontal scaffolds 120 at regular intervals between a pair of vertical supports 110.
  • a working footing 130 for the worker is formed on the top of the vertical support 110.
  • the ladder can adjust the angle between the vertical support 110, while the height is generally fixed.
  • there is a method of adjusting the length by manually assembling a double-manufactured ladder but the time required for disassembling and assembling the ladder increases, thereby reducing work efficiency.
  • the general prefabricated manual ladder has a problem that the fatigue of the operator increases due to the disassembly, reassembly and volume of the ladder when moving between workplaces.
  • the problem to be solved by the present invention is to propose a ladder adjustable length.
  • Another object of the present invention is to propose a ladder capable of adjusting the angle.
  • Another problem to be solved by the present invention is to propose a ladder capable of adjusting the length and angle within a short time compared to the conventional.
  • Another problem to be solved by the present invention is to propose a ladder with high working efficiency of the worker.
  • Another object of the present invention is to propose a ladder capable of adjusting the length and angle without using electricity.
  • Another problem to be solved by the present invention is to propose a ladder that is easy to install, store and move.
  • the adjustable length ladder of the present invention includes a first support including a first outer support, a first inner support introduced into the first outer support, a horizontal scaffold that interconnects the first support, and the horizontal
  • the first gear is formed on the inside of the scaffolding, the first gear is formed in the groove, the second gear meshes with the first gear, and changes the rotation direction of the first gear, the rotation bar coupled with the second gear,
  • the third gear formed at one end, the fourth gear is engaged with the third gear is formed at the end, is formed inside the first inner support, is formed in a rod type, screw bolts formed with a screw on the outside, the inside The screw bolt is formed in, the outer side includes a screw nut coupled to the first inner support.
  • the adjustable length ladder of the present invention includes a first outer support, a first support including a first inner support introduced into the first outer support, a horizontal scaffold that interconnects the first support, and an electric motor. And a rotation bar rotating by the rotation of the electric motor, a third gear formed at one end of the rotation bar, and a fourth gear engaged with the third gear at the end, and formed inside the first inner support. It is formed in a rod type, a screw bolt is formed on the outside of the screw bolt, the screw bolt is formed on the inside, and the screw nut is coupled to the first inner support on the outside.
  • the adjustable length ladder of the present invention includes a first support including a first outer support, a first inner support introduced into the first outer support, a horizontal scaffold that interconnects the first support, and the horizontal
  • the first gear is formed on the inside of the scaffolding, the first gear is formed in the groove, the second gear meshes with the first gear, and changes the rotation direction of the first gear, the rotation bar coupled with the second gear,
  • Length adjustable ladder according to the present invention has the advantage that the angle can be adjusted as well as the length of the ladder.
  • the ladder of the present invention has an advantage that the inner support extending from the outer support is accommodated in the inner side of the outer support, it is easy to move and store by extending the inner support from the outer support if necessary.
  • the ladder of the present invention can be used to adjust the length of the ladder using a variety of tools, such as an electric driver or an auxiliary handle, in particular, it is possible to easily extend the length of the ladder even in places where electricity can not be used.
  • the ladder of the present invention has the advantage that can be adjusted in length and angle adjustment within a short time using an electric motor in the place where the electricity supply is easy to increase the work efficiency.
  • Figure 2 shows a ladder that can be extended in length according to an embodiment of the present invention.
  • Figure 3 shows the internal structure of the first support is formed with the central gear box and the side gear according to an embodiment of the present invention.
  • FIG. 4 is a view showing the operation of the ladder can be extended in length according to an embodiment of the present invention.
  • FIG. 5 illustrates a method of moving the first inner supporter up and down on the first outer supporter using an electric driver according to an exemplary embodiment of the present invention.
  • FIG. 6 illustrates a structure of a side gear according to an embodiment of the present invention.
  • FIG. 7 is a view showing a method for adjusting the length of the ladder using an electric motor according to an embodiment of the present invention.
  • FIG. 8 illustrates a double-sided ladder capable of length adjustment and angle adjustment according to an embodiment of the present invention.
  • Figure 2 shows a ladder that can be extended in length according to an embodiment of the present invention.
  • the ladder can be extended in detail according to an embodiment of the present invention using FIG. 2.
  • the extendable ladder includes a first vertical support, a second vertical support, a horizontal scaffold and a working scaffold.
  • first vertical support a first vertical support
  • second vertical support a second vertical support
  • horizontal scaffold a horizontal scaffold
  • working scaffold a working scaffold
  • the first vertical support 210 is formed with a plurality of horizontal scaffold 230 at regular intervals.
  • a work scaffold which is a space in which an operator can work, is formed on the first support 210.
  • the second support 220 is coupled to the first support 210, the hinge is coupled to facilitate the angle adjustment with the first support (210).
  • a central gear box 250 is formed inside the horizontal scaffold 230 of the horizontal scaffold 230 constituting the first support 210, and a side gear box (side) of the first support 210 is formed on the side of the horizontal scaffold 230. 260 is formed.
  • the operator operates the central gear box 250 formed inside the horizontal scaffold 230 or the side gear box 260 to extend the length of the first support 210.
  • the central gear box 250 may be formed inside the other members in addition to the horizontal step.
  • the internal structure of the first support on which the central gear box and the side gear box are formed will be described in detail with reference to FIG. 3.
  • Figure 3 illustrates the internal structure of the first support is formed with the central gear box and the side gear box according to an embodiment of the present invention.
  • the internal structure of the first support on which the central gear box and the side gear box are formed according to an embodiment of the present invention will be described in detail with reference to FIG. 3.
  • the first support 210 includes a first outer support 210a formed on the outside and a first inner support 210b formed on the inner side of the first outer support 210a.
  • the second support 220 is hinged to the first outer support 210a, the angle between the first outer support 210 and the second support 220 can be adjusted by the hinge coupling.
  • the working footrest 240 is formed at an upper end of the first inner support 210b.
  • a center gearbox 250 is formed inside the horizontal scaffold of any one of the horizontal scaffolds 230 connecting the first outer support 210a configured as two bars.
  • the central gearbox 250 includes a first gear 251 and a second gear 252.
  • the first gear 251 and the second gear 252 may be configured in the form of a bevel gear.
  • the horizontal footrest includes a second horizontal footrest that connects the first outer support 210a to each other.
  • a groove is formed in the center of the first gear 251, and the first gear 251 is rotated by the rotation of the groove.
  • the groove formed inside the first gear 251 has a shape corresponding to the shape of the end of the electric driver so that the end of the electric driver can be retracted.
  • the second gear 252 meshes with the first gear 251 and rotates in a direction perpendicular to the rotation direction of the first gear 251.
  • the second gear 252 is formed on the rotation bar 253, and the third gear 254 is formed at both ends of the rotation bar 253. That is, the 3-1 gear 254a is formed at one end of the rotation bar 253, and the 3-2 gear 254b is formed at the other end of the rotation bar 253.
  • the rotation bar 253 is formed inside the horizontal scaffolding in the same manner as the center gear box, and the third gear 254 is formed inside the first inner support 210a.
  • the screw bolt 255 is formed in a rod type, and a screw line is formed on the outside.
  • a first screw bolt 255a is formed inside one of the first inner support members 210b having two rod types, and a second screw bolt 255b inside the other first inner support member. Is formed.
  • a gear is formed at an upper end of the screw bolt 255, and the gear formed at the upper end of the screw bolt 255 is engaged with the third gear 254.
  • a 4-1 gear is formed at an upper end of the first screw bolt 255a
  • a 4-2 gear is formed at an upper end of the second screw bolt 255b.
  • the 4-1 gear is kept in engagement with the 3-1 gear 254a, and the 4-1 gear shifts the rotation direction of the 3-1 gear 254a by 90 degrees.
  • the 4-2 gear maintains the meshed state with the 3-2 gear 254b, and the 4-2 gear switches the rotational direction of the 3-2 gear 254b in a right angle direction.
  • the third and fourth gears also have a bevel gear shape.
  • the screw nut 256 is formed outside the screw bolt 255, and the screw nut 256 moves up and down on the screw bolt 255 by the rotation of the screw bolt 255.
  • the screw nut 256 has a screw bolt 255 introduced therein, and a first inner support 210b is fixedly coupled to the outside thereof. Accordingly, the first inner support 210b moves in the same manner as the screw nut 256. In detail, when the screw nut 256 moves upward on the screw bolt 255, the first inner support 210b also moves upward. In addition, when the screw nut 256 moves downward on the screw bolt 255, the first inner support 210b also moves downward. As shown in FIG.
  • the screw nut 256 also consists of a first screw nut 256a and a second screw nut 256b, the first screw nut 256a being one of two first inner supports. Is formed inside the first inner support of the second screw nut (256b) is formed inside the other of the first inner support.
  • the present invention forms a side gear box 260 on the side of the outer support, the side gear constituting the side gear box is connected to the third gear 254 or the rotation bar 253. That is, when the side gear is rotated, the third gear 254 also rotates.
  • Figure 3 shows an example of rotating the side gear constituting the side gear box formed on the side of the outer support using the auxiliary handle, a detailed configuration thereof will be described later.
  • FIG. 4 is a view showing the operation of the ladder can be extended in length according to an embodiment of the present invention.
  • the operation of the ladder that can be extended in length according to an embodiment of the present invention will be described in detail with reference to FIG. 4.
  • the length extension of the ladder uses an electric driver or an auxiliary handle.
  • the first gear constituting the center gear box is rotated using an electric driver, or the side gear is rotated using an auxiliary handle.
  • the horizontal scaffold is stored or adhered to the side of the first inner support, and when the first inner support is pulled out of the first outer support, the horizontal scaffold is stored or adhered to the side of the first inner support. Rotate to fix to the other side first inner support.
  • the horizontal scaffold stored or in close contact with the first inner supporter is hinged to the first inner supporter, and the side of the other first inner supporter has a protrusion.
  • the horizontal footrest is fixed to the first inner supporter by the protrusion formed on the side of the other first inner supporter.
  • the horizontal scaffold is divided into a first horizontal scaffold that hinges the first inner support, and a second horizontal scaffold that interconnects the second outer support.
  • first gear or side gear may be rotated in a direction opposite to the existing rotation direction in order to introduce the first inner support drawn out of the first outer support into the first outer support.
  • FIG. 5 illustrates a method of moving the first inner supporter up and down on the first outer supporter using an electric driver according to an exemplary embodiment of the present invention.
  • a method of moving the first inner supporter up and down on the first outer supporter using an electric driver will be described in detail with reference to FIG. 5.
  • a method of moving the first inner supporter up and down on the first outer supporter using an electric driver is divided into a chain belt method, a rack gear method, and a screw method.
  • the first inner support may be drawn out of the first outer support in a manner other than that described above.
  • the screw method uses a screw bolt and a screw nut as shown in FIG. 2, and rotates the screw bolt to move the screw nut up and down on the screw bolt. Accordingly, the first inner support fixed to the screw nut is also moved up and down.
  • the chain belt method connects the end of the rotation bar and the bottom rotation bar formed on the bottom of the first support with a chain belt.
  • the chain belt connected to the rotating bar is also rotated by the rotation of the rotating bar.
  • the chain belt is fixedly fastened with the first inner support, so that the first inner support moves up and down on the first outer support by the rotation of the chain belt.
  • the rack gear method is similar to the chain belt method except that the rack gear is used instead of the chain belt.
  • the first inner support is moved up and down on the first outer support using a rack gear fixedly connected to the first inner support. That is, a third gear is formed at the end of the rotation bar, and the rack gear rotates by the rotation of the third gear.
  • the first inner support fixedly connected to the rack gear by the rotation of the rack gear also moves up and down inside the first outer support.
  • FIG. 6 shows the structure of the side gear box according to an embodiment of the present invention.
  • the structure of the side gear box according to an embodiment of the present invention will be described in detail with reference to FIG. 6.
  • the side gear box includes a first side gear 261 and a second side gear 262, and the first side gear 261 is formed at the end of the rotation bar 253. That is, a first side gear 261 is formed at the end of the rotation bar 253, and a third gear is formed at a point spaced a predetermined distance inward from the end where the first side gear 261 is formed.
  • the first side gear 261 and the second side gear 262 are engaged with each other, and when the side gear of either the first side gear 261 or the second side gear 262 rotates, the other side gear also rotates. do. Therefore, when one of the side gears of the first side gear 261 or the second side gear 262 rotates, the third gear connected by the first side gear 261 and the rotation bar 253 also rotates.
  • the first side gear 261 is rotatable using an electric driver, and the second side gear 262 is rotatable using an auxiliary handle.
  • the first side gear 261 is formed with a groove portion 261a through which an end portion of the driver can be inserted, and the second side gear 262 has a rod-shaped protrusion to be inserted into an end portion of the auxiliary handle. 262a is formed.
  • FIG. 7 is a view showing a method for adjusting the length of the ladder using an electric motor according to an embodiment of the present invention.
  • a method of adjusting the length of a ladder using an electric motor has been proposed to rotate a rotating shaft using an electric motor. That is, the present invention proposes a method of rotating the rotating shaft using the electric motor 270 in addition to the electric driver, for this purpose, a battery for driving the electric motor 270 is built into the ladder. Of course, the electric motor 270 may be driven by the power supplied from the outside instead of the battery.
  • FIG. 8 illustrates a double-sided ladder capable of length adjustment and angle adjustment according to an embodiment of the present invention.
  • Figure 8 will be described in detail with respect to the double-sided ladder capable of adjusting the length and angle.
  • the first support is composed of the first outer support and the first inner support
  • the second support is not composed of the outer support and the inner support.
  • the first support 210 is composed of a first outer support 210a and a first inner support 210b
  • the second support 220 is a second outer support 220a and a second inner support. 220b.
  • the second inner supporter is also drawn out from the second outer supporter using the electric driver or the auxiliary handle in the same manner as the first inner supporter.
  • the second support has the same configuration as the first support.
  • the present invention proposes a method of adjusting the angle between the first support and the second support.
  • the angle adjustment of the first support and the second support uses a worm gear 280.
  • the rod-shaped first worm gear 280a is coupled to the working scaffold, and the elliptical second worm gear 280b is coupled to the second support.
  • the working scaffold is of course coupled to the end of the first support.
  • the first worm gear 280a is formed with a groove to allow the end of the electric driver to be drawn in.
  • the second worm gear 280b also rotates, thereby causing the first
  • the angle between the support and the second support can be adjusted.
  • the first worm gear 280a may be rotated using an auxiliary handle in addition to the electric driver.
  • the end of the first worm gear is formed with a protrusion instead of a groove.
  • the present invention relates to a shower capable of using a rotary tool, and more particularly to a shower capable of rotating the rotary tool using the water pressure of tap water or industrially supplied water.
  • Length adjustable ladder according to the present invention has the advantage that the angle can be adjusted as well as the length of the ladder.
  • the ladder of the present invention has an advantage that the inner support extending from the outer support is accommodated in the inner side of the outer support, it is easy to move and store by extending the inner support from the outer support if necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
PCT/KR2017/012121 2016-11-02 2017-10-31 전동 드라이버로 길이 조절이 가능한 자동 사다리 Ceased WO2018084519A1 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2019545218A JP6894524B2 (ja) 2016-11-02 2017-10-31 電動ドライバーにより長さが調節可能な自動はしご
EP17867699.5A EP3536891B1 (en) 2016-11-02 2017-10-31 Automatic ladder having length adjustable by electric driver
CN201780060090.5A CN109863281B (zh) 2016-11-02 2017-10-31 用电动螺丝刀可调长度的自动梯子
US16/345,565 US11225832B2 (en) 2016-11-02 2017-10-31 Automatic ladder having length adjustable by electric driver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020160144836A KR101767014B1 (ko) 2016-11-02 2016-11-02 전동 드라이버로 길이 조절이 가능한 자동 사다리
KR10-2016-0144836 2016-11-02

Publications (1)

Publication Number Publication Date
WO2018084519A1 true WO2018084519A1 (ko) 2018-05-11

Family

ID=59652681

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2017/012121 Ceased WO2018084519A1 (ko) 2016-11-02 2017-10-31 전동 드라이버로 길이 조절이 가능한 자동 사다리

Country Status (6)

Country Link
US (1) US11225832B2 (enExample)
EP (1) EP3536891B1 (enExample)
JP (1) JP6894524B2 (enExample)
KR (1) KR101767014B1 (enExample)
CN (1) CN109863281B (enExample)
WO (1) WO2018084519A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108442875A (zh) * 2018-06-15 2018-08-24 董道明 一种多功能建筑施工梯

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101958349B1 (ko) * 2018-06-27 2019-03-14 천석이 사다리용 승하강작업대
US11162267B1 (en) * 2019-04-26 2021-11-02 Patrick J. Santini Adjustable telescoping plank
KR102099306B1 (ko) * 2019-08-22 2020-04-09 장영균 트레이의 높이 조절이 가능한 사다리
CN111042730B (zh) * 2019-11-28 2021-11-30 邳州市鑫盛创业投资有限公司 一种爬梯
US20210388676A1 (en) * 2020-05-08 2021-12-16 Jarvis D. Jones, SR. Motorized ladder assembly
CN111608567A (zh) * 2020-06-24 2020-09-01 中国建筑第五工程局有限公司 一种建筑机电安装工程用调节式登高梯及其应用方法
EP3943707B1 (en) * 2020-07-22 2023-11-01 Werner Co. Extension ladder and methods of making and using an extension ladder
CN112031639B (zh) * 2020-08-31 2022-10-04 上海瑞居金属制品有限公司 一种新型的梯子
USD961116S1 (en) * 2021-02-10 2022-08-16 Ihor Zhuk Foldable ladder
CN114427341B (zh) * 2021-12-24 2023-08-22 呼和浩特科林热电有限责任公司 一种火力发电厂用绝缘梯
CN114427340B (zh) * 2021-12-31 2023-08-22 呼和浩特科林热电有限责任公司 一种基于火力发电厂的可防护绝缘梯
USD1098495S1 (en) * 2023-06-05 2025-10-14 Ihor Zhuk Folding ladder
KR102642460B1 (ko) * 2023-08-07 2024-02-28 장영균 신축형 사다리의 구동장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880920A (en) * 1958-04-30 1959-04-07 Lee S Glessner Extension ladder
US5033584A (en) * 1990-03-02 1991-07-23 Battle Harold P All-purpose ladder
JP2006250303A (ja) * 2005-03-14 2006-09-21 Chugoku Electric Power Co Inc:The 手動弁
JP2016121014A (ja) * 2014-12-25 2016-07-07 光洋機械産業株式会社 昇降作業台及びこの昇降作業台における昇降方法
CN106050119A (zh) * 2016-07-29 2016-10-26 国网山东省电力公司龙口市供电公司 一种电力维修梯

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US284683A (en) * 1883-09-11 Extension-ladder
US1077650A (en) * 1912-10-12 1913-11-04 Clarence E Stroud Step-ladder.
US1423104A (en) * 1921-04-27 1922-07-18 Glasser Richard Extensible ladder for fire escapes
US2376529A (en) * 1943-08-07 1945-05-22 Louis Bacon Extension ladder
DE2001416C3 (de) * 1970-01-14 1979-02-08 Walter 7120 Bissingen Kuemmerlin Leiter
US3799289A (en) * 1972-12-01 1974-03-26 J Cecere Electric stepladder
US5145031A (en) * 1990-09-24 1992-09-08 Sprunger Powell L Electric ladder
US7370725B1 (en) * 2005-01-03 2008-05-13 Gary R Dornfeld Motorized rungless ladder
EP1686233A1 (en) * 2005-02-01 2006-08-02 Telesteps AB Collapsible combination ladder
US8292039B2 (en) * 2006-03-22 2012-10-23 Jlg Industries, Inc. Mast lift and mast lift system
US8011473B1 (en) * 2007-11-07 2011-09-06 Charles Gregersen Motorized stepladder
CN202081816U (zh) * 2011-05-22 2011-12-21 黄春秋 折叠梯定位结构
CN202417284U (zh) * 2011-12-15 2012-09-05 汝阳县电业局 一种折叠式可加长电工立梯
CN205532251U (zh) * 2016-03-01 2016-08-31 陈昊 一种变压器维修攀爬装置
WO2017160769A1 (en) * 2016-03-14 2017-09-21 Tim Price, D/B/A, Contact! Corporation Ground rod and stake puller
CN105735879A (zh) * 2016-03-17 2016-07-06 合肥晨煦信息科技有限公司 一种新型伸缩梯

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880920A (en) * 1958-04-30 1959-04-07 Lee S Glessner Extension ladder
US5033584A (en) * 1990-03-02 1991-07-23 Battle Harold P All-purpose ladder
JP2006250303A (ja) * 2005-03-14 2006-09-21 Chugoku Electric Power Co Inc:The 手動弁
JP2016121014A (ja) * 2014-12-25 2016-07-07 光洋機械産業株式会社 昇降作業台及びこの昇降作業台における昇降方法
CN106050119A (zh) * 2016-07-29 2016-10-26 国网山东省电力公司龙口市供电公司 一种电力维修梯

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3536891A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108442875A (zh) * 2018-06-15 2018-08-24 董道明 一种多功能建筑施工梯

Also Published As

Publication number Publication date
EP3536891B1 (en) 2022-06-08
CN109863281B (zh) 2021-02-12
CN109863281A (zh) 2019-06-07
US11225832B2 (en) 2022-01-18
US20190316415A1 (en) 2019-10-17
EP3536891A4 (en) 2020-06-17
KR101767014B1 (ko) 2017-08-09
EP3536891A1 (en) 2019-09-11
JP6894524B2 (ja) 2021-06-30
JP2020501049A (ja) 2020-01-16

Similar Documents

Publication Publication Date Title
WO2018084519A1 (ko) 전동 드라이버로 길이 조절이 가능한 자동 사다리
CN208668908U (zh) 用于建筑施工的移动脚手架
CN215479534U (zh) 一种电力故障维修辅助作业装置
CN109779386B (zh) 一种可拉伸折叠式的临边防护栏杆
CN113023600A (zh) 一种装配式建筑混凝土预制柱定位导向装置
CN108512132B (zh) 一种建筑外墙施工电线铺设固定器
CN216340268U (zh) 一种轻质隔墙板定位装置
CN117080959B (zh) 一种建筑工程用临时电缆安装固定结构及固定方法
CN115262943B (zh) 一种附着式升降脚手架层间附着系统及其施工方法
CN213718431U (zh) 一种用于船舶推进设备的电气柜
CN219751848U (zh) 一种楼宇电力机电安装平台
CN219081222U (zh) 一种建筑施工护栏
CN215645927U (zh) 一种模压的电缆桥架
CN220565648U (zh) 一种装配式施工用模块化平台
CN211456523U (zh) 一种建筑工地的电线支撑装置
CN220254039U (zh) 一种可升降调节的电缆桥架
CN219041297U (zh) 一种建筑电气工程用线缆保护装置
CN221101618U (zh) 一种led无缝拼接的投影墙
CN220848579U (zh) 一种建筑施工的支撑平台
CN219316359U (zh) 一种电力安装用施工架
CN212338761U (zh) 一种工程监理用安全监测装置
CN218912495U (zh) 一种角度可调的台架围挡支撑件
CN214462377U (zh) 一种用于建筑业的土木工程施工架
CN218758640U (zh) 一种可避障升降平台
CN215443465U (zh) 一种市政工程建筑施工围板

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17867699

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2019545218

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2017867699

Country of ref document: EP

Effective date: 20190603