CN113006677A - Extension ladder device - Google Patents
Extension ladder device Download PDFInfo
- Publication number
- CN113006677A CN113006677A CN202110285845.XA CN202110285845A CN113006677A CN 113006677 A CN113006677 A CN 113006677A CN 202110285845 A CN202110285845 A CN 202110285845A CN 113006677 A CN113006677 A CN 113006677A
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- CN
- China
- Prior art keywords
- ladder
- pulley
- stage
- handle
- movable
- 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.)
- Pending
Links
- 230000001174 ascending effect Effects 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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- 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
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- 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
- E06C7/082—Connections between rungs or treads and longitudinal members
-
- 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 an extension ladder device.A movable support is arranged at the bottom of a first-stage ladder, can rotate for 0-270 degrees around a bottom rotating shaft, and can be fixed when being rotated to a required position during use, so that the bottom is in surface contact with a support plane; the second-stage ladder is arranged in the first-stage ladder, the handle of the second-stage ladder is a movable handle, the movable handle can be retracted when the second-stage ladder is retracted, and the ratchet wheel blocking device is opened, so that the second-stage ladder can be retracted; the second-stage ladder is lifted by adopting a pulley block, a pulley integrated with a ratchet wheel is rotated clockwise, and the purpose of lifting the second-stage ladder can be achieved by retracting a rope; the left side and the right side of the second-level ladder are both provided with small pulleys, so that the friction with the first-level ladder is reduced, and the rising resistance is reduced. The method is of great significance for realizing the ascending operation.
Description
Technical Field
The invention belongs to the field of common tools, and particularly relates to an extension ladder device.
Background
Many times in people's daily life need climb to the operation of the height that some height can not reach, or get some article that are in higher place, often need to use the ladder. Most ladders currently on the market have a number of disadvantages: for example, the transportation is laborious, or the operation cannot be applied to the operation at too high place due to the limitation of the size, and the use is limited to different degrees. Therefore, the ladder which can be extended and contracted, occupies small space and can be used for relatively higher operation is designed.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the defects of the existing ladder, the invention provides a telescopic ladder device.
The technical scheme is as follows: a telescopic ladder device comprises a first-stage ladder, a second-stage ladder and a pulley block;
the first-stage ladder is provided with a movable support and a rotating device;
the movable support is arranged at the bottom of the first-stage ladder, can rotate 0-270 degrees around a rotating shaft at the bottom of the first-stage ladder, and can be fixed when rotating to a required position, so that the bottom of the ladder is in surface contact with a supporting plane, and the stability is improved;
the rotating device is arranged at the bottom of the side edge of the first-stage ladder, the rotating device comprises a ratchet wheel and a pulley, the first-stage ladder is connected with the second-stage ladder through the pulley and a rope, the rope is tightened by rotating the device to achieve the purpose of lifting the second-stage ladder, and the ratchet wheel can play a role of clamping;
the second-stage ladder is provided with a movable ladder handle and a small pulley;
the movable ladder handle is arranged on the second-stage ladder, one end of the movable ladder handle is provided with the round hole and is fixed on the second-stage ladder, the movable ladder handle can rotate around the center of the round hole, the other end of the movable ladder handle is provided with the notch, the movable ladder handle can be put on the second-stage ladder for use by rotating the movable ladder handle through the round hole, the movable ladder handle can be moved away when articles need to be taken out or put down from the lower part of the ladder, and the risk caused by delivering the articles from the side edge of the ladder is avoided;
the small pulley is arranged on the second-level ladder and plays a role in reducing the lifting friction force of the second-level ladder and positioning the second-level ladder.
As an optimization: the rotating device consists of a pulley, a ratchet wheel and a small handle at the side edge of the ratchet wheel, and a layer of ring is sleeved outside the small handle, so that the resistance brought by rotating the ratchet wheel can be reduced.
As an optimization: the small pulleys are arranged on the front side and the rear side of the two side edges of the second-stage ladder, and 32 small pulleys are arranged.
As an optimization: the assembly pulley contain three pulley, a pulley of installing at the side top of first order ladder, a pulley of installing in the side bottom of second order ladder, last one is installed in pulley and the ratchet of first order ladder side bottom, connect through the wire rope between the assembly pulley, wire rope one end is fixed at the fixed point, pulley and the ratchet at first order ladder side bottom are fixed to the other end, reach shrink wire rope through rotatory pulley and ratchet, promote the purpose of second order ladder.
Has the advantages that: the movable support is arranged at the bottom of the first-stage ladder, can rotate around a bottom rotating shaft by 0-270 degrees, and can be fixed when being rotated to a required position during use, so that the surface contact between the bottom and the support plane is realized; the second-stage ladder is arranged in the first-stage ladder, the handle of the second-stage ladder is a movable handle, the movable handle can be retracted when the second-stage ladder is retracted, and the ratchet wheel blocking device is opened, so that the second-stage ladder can be retracted; the second-stage ladder is lifted by adopting a pulley block, a pulley integrated with a ratchet wheel is rotated clockwise, and the purpose of lifting the second-stage ladder can be achieved by retracting a rope; the left side and the right side of the second-level ladder are both provided with small pulleys, so that the friction with the first-level ladder is reduced, and the rising resistance is reduced. The method is of great significance for realizing the ascending operation.
Drawings
FIG. 1 is a schematic overall structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the subsections of the present invention;
FIG. 3 is a schematic view of the ratchet wheel and pulley of the present invention in one piece;
FIG. 4 is a schematic illustration of the pulley block drive of the present invention;
fig. 5 is a schematic view of the second step ladder of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
Examples
As shown in fig. 1-2, an extension ladder device comprises a movable support 1, a rotating device 2, a first-stage ladder 3, a second-stage ladder 4, a movable ladder handle 5, a small pulley 6 and a pulley block 7.
The movable support 1 is arranged at the bottom of the first-stage ladder 3, and can rotate for 0-270 degrees around a bottom rotating shaft, so that the bottom of the ladder is in surface contact with a supporting plane conveniently, and the stability is improved.
The small pulley 6 is arranged on the second-level ladder 4, so that the lifting friction resistance of the second-level ladder is reduced.
The second-level ladder 4 is arranged in the first-level ladder 3 through a small pulley 6, and the small pulley plays a role in reducing friction force and positioning the second-level ladder.
The movable ladder 5 install in second level ladder 4, the movable ladder is opened the round hole to one end, fixes at the second level ladder, can wind the round hole center rotation, the opening is opened to the other end, through the rotatory ladder of round hole can take the ladder to use at the second level ladder, also can remove the movable ladder when article are drawed or put down to needs from the ladder below, avoided the risk of bringing that delivers article from the ladder side.
The pulley block 7 comprises three pulleys, one is arranged at the top of the side edge of the first-stage ladder, the other is arranged at the bottom of the side edge of the second-stage ladder, the last is integrated with the ratchet wheel, and the pulley blocks are connected through a steel wire rope.
As shown in fig. 3, the rotating device 2 is composed of a pulley 21, a ratchet wheel 22 and a small handle 23 at the side of the ratchet wheel, and a layer of ring is sleeved outside the small handle to reduce the resistance brought by the rotation of the ratchet wheel.
As shown in fig. 4, the principle of lifting the second step ladder by the pulley block 7 is illustrated, the pulley block 7 comprises three pulleys, one pulley 71 installed on the top of the side edge of the first step ladder 3, one pulley 74 installed on the bottom of the side edge of the second step ladder 4, the last pulley and ratchet 75 installed on the bottom of the side edge of the first step ladder, the pulley blocks 7 are connected by a wire rope 73, one end of the wire rope 73 is fixed on a fixed point 72, the other end of the wire rope 73 is fixed on the pulley and ratchet 75 on the bottom of the side edge of the first step ladder, and the purpose of retracting the wire rope 73 and lifting the second step ladder is achieved by rotating the pulleys and.
As shown in fig. 5, the second-stage ladder is provided with small pulleys 6 arranged on the front side and the rear side of two side edges, 32 small pulleys are arranged, a pulley block 7 for lifting is arranged at the bottom of one side edge, and a movable ladder handle is arranged on the upper surface of the second-stage ladder and is shown to be placed at a use position.
The movable support is arranged at the bottom of the first-stage ladder, can rotate around a bottom rotating shaft by 0-270 degrees, and can be fixed when being rotated to a required position during use, so that the surface contact between the bottom and the support plane is realized; the second-stage ladder is arranged in the first-stage ladder, the handle of the second-stage ladder is a movable handle, the movable handle can be retracted when the second-stage ladder is retracted, and the ratchet wheel blocking device is opened, so that the second-stage ladder can be retracted; the second-stage ladder is lifted by adopting a pulley block, a pulley integrated with a ratchet wheel is rotated clockwise, and the purpose of lifting the second-stage ladder can be achieved by retracting a rope; the left side and the right side of the second-level ladder are both provided with small pulleys, so that the friction with the first-level ladder is reduced, and the rising resistance is reduced. The method is of great significance for realizing the ascending operation.
Claims (4)
1. An extension ladder device, its characterized in that: comprises a first-stage ladder (3), a second-stage ladder (4) and a pulley block (7);
the first-stage ladder (3) is provided with a movable support (1) and a rotating device (2);
the movable support (1) is arranged at the bottom of the first-stage ladder (3), the movable support (1) can rotate 0-270 degrees around a rotating shaft at the bottom of the first-stage ladder (3) and can be fixed when rotating to a required position, the bottom of the ladder is convenient to contact with the surface of a supporting plane, and the stability is improved;
the rotating device (2) is arranged at the bottom of the side edge of the first-stage ladder (3), the rotating device (2) comprises a ratchet wheel and a pulley, the first-stage ladder (3) is connected with the second-stage ladder (4) through the pulley and a rope, the rope is tightened by rotating the device to achieve the purpose of lifting the second-stage ladder (4), and the ratchet wheel can play a role of clamping;
the second-stage ladder (4) is provided with a movable ladder handle (5) and a small pulley (6);
the movable ladder handle (5) is arranged on the second-stage ladder (4), one end of the movable ladder handle (5) is provided with a round hole, the movable ladder handle is fixed on the second-stage ladder (4) and can rotate around the center of the round hole, the other end of the movable ladder handle is provided with a notch, the movable ladder handle (5) is rotated through the round hole, the movable ladder handle (5) can be put on the second-stage ladder (4) for use, when articles need to be taken out or put down from the lower part of the ladder, the movable ladder handle (5) can be moved away, and the risk caused by delivering the articles from the side edge of the ladder is avoided;
the small pulley (6) is arranged on the second-stage ladder (4), and the small pulley (6) plays a role in reducing the lifting friction force of the second-stage ladder (4) and positioning the second-stage ladder (4).
2. The portable extension ladder apparatus of claim 1, wherein: the rotating device (2) is composed of a pulley (21), a ratchet wheel (22) and a small handle (23) on the side edge of the ratchet wheel, and a layer of circular ring is sleeved on the outer side of the small handle (23) so that resistance brought by rotating the ratchet wheel (22) can be reduced.
3. The portable extension ladder apparatus of claim 1, wherein: the small pulleys (6) are arranged on the front side and the rear side of the two side edges of the second-stage ladder (4) and are provided with 32 small pulleys.
4. The portable extension ladder apparatus of claim 1, wherein: pulley block (7) contain three pulley, pulley (71) at the side top of first order ladder (3) is installed to one, pulley (74) of installing the side bottom at second level ladder (4) are installed to one, last one is installed in pulley and ratchet (75) of first order ladder side bottom, link through wire rope (73) between pulley block (7), wire rope (73) one end is fixed at fixed point (72), pulley and ratchet (75) at first order ladder side bottom are fixed to the other end, reach shrink wire rope (73) through rotatory pulley and ratchet (75), promote the purpose of second level ladder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110285845.XA CN113006677A (en) | 2021-03-17 | 2021-03-17 | Extension ladder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110285845.XA CN113006677A (en) | 2021-03-17 | 2021-03-17 | Extension ladder device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113006677A true CN113006677A (en) | 2021-06-22 |
Family
ID=76409227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110285845.XA Pending CN113006677A (en) | 2021-03-17 | 2021-03-17 | Extension ladder device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113006677A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1707063A (en) * | 2004-06-10 | 2005-12-14 | 阿禄因康株式会社 | Extension ladder |
| CN2906017Y (en) * | 2006-05-18 | 2007-05-30 | 黄子中 | Telescopic ladder |
| CN103352654A (en) * | 2013-07-03 | 2013-10-16 | 国家电网公司 | Moveable type hand-operated elevator |
| CN206220837U (en) * | 2016-11-04 | 2017-06-06 | 国网山东省电力公司日照供电公司 | A kind of portable power is checked meter ladder |
| CN211448484U (en) * | 2019-11-15 | 2020-09-08 | 深圳市建安(集团)股份有限公司 | Height-adjustable movable ladder for building construction |
| CN112031636A (en) * | 2020-08-05 | 2020-12-04 | 凌云(宜昌)航空装备工程有限公司 | Follow-up type airplane maintenance lifting working ladder with self-locking device |
| CN112302526A (en) * | 2020-09-29 | 2021-02-02 | 连云港神鹰复合材料科技有限公司 | Multi-section carbon fiber fire-fighting extension ladder |
-
2021
- 2021-03-17 CN CN202110285845.XA patent/CN113006677A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1707063A (en) * | 2004-06-10 | 2005-12-14 | 阿禄因康株式会社 | Extension ladder |
| CN2906017Y (en) * | 2006-05-18 | 2007-05-30 | 黄子中 | Telescopic ladder |
| CN103352654A (en) * | 2013-07-03 | 2013-10-16 | 国家电网公司 | Moveable type hand-operated elevator |
| CN206220837U (en) * | 2016-11-04 | 2017-06-06 | 国网山东省电力公司日照供电公司 | A kind of portable power is checked meter ladder |
| CN211448484U (en) * | 2019-11-15 | 2020-09-08 | 深圳市建安(集团)股份有限公司 | Height-adjustable movable ladder for building construction |
| CN112031636A (en) * | 2020-08-05 | 2020-12-04 | 凌云(宜昌)航空装备工程有限公司 | Follow-up type airplane maintenance lifting working ladder with self-locking device |
| CN112302526A (en) * | 2020-09-29 | 2021-02-02 | 连云港神鹰复合材料科技有限公司 | Multi-section carbon fiber fire-fighting extension ladder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210622 |
|
| RJ01 | Rejection of invention patent application after publication |