CN108468507B - A kind of telescopic ladder - Google Patents
A kind of telescopic ladder Download PDFInfo
- Publication number
- CN108468507B CN108468507B CN201810112107.3A CN201810112107A CN108468507B CN 108468507 B CN108468507 B CN 108468507B CN 201810112107 A CN201810112107 A CN 201810112107A CN 108468507 B CN108468507 B CN 108468507B
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- Prior art keywords
- inner tube
- nodal axisn
- section
- crosspiece
- flexible
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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
-
- 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
- E06C1/397—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 characterised by having wheels, rollers, or runners
-
- 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
- E06C7/14—Holders for pails or other equipment on or for ladders
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/42—Ladder feet; Supports therefor
- E06C7/46—Non-skid equipment
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
- Rehabilitation Tools (AREA)
Abstract
The invention discloses a kind of telescopic ladders, and including two identical flexible vertical bars, the rotation axis that flexible vertical bar can be driven flexible in flexible vertical bar, the electric assembly for driving rotation axis rotation, the crosspiece being arranged between two flexible vertical bars, the traveling wheel that telescopic ladder top is arranged in is arranged in；Ladder energy automatic telescopic of the present invention, telescopic extensions are big, and the people that ascends a height can be carried when flexible, alleviate the labor intensity for the people that ascends a height, and avoid the people that ascends a height and climb up on foot and climb down risk；In addition, flexible vertical bar and rotation axis mutually restrict, therefore flexible vertical bar respectively saves pipe and each nodal axisn of rotation axis is not fallen out；Equipped with travel switch, when flexible vertical bar reaches the flexible limit, automatic shutdown circuit, effective protection motor.
Description
Technical field
The invention belongs to ascending tool technical field, specially a kind of telescopic ladder.
Background technique
Ladder is a kind of extensive ascending tool of use.The current existing ladder people that requires to ascend a height climbs up climb down on foot,
Large labor intensity, risk are high.Reduce contour dimension for the ease of portable, people are made that various with flexible or folder function
Ladder, it is but flexible or fold manpower is needed to complete, and stroke is very limited.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of telescopic ladder.
The technical scheme adopted by the invention is that: a kind of telescopic ladder, it is characterized in that: the telescopic ladder includes two complete
Identical flexible vertical bar is arranged in the rotation axis that flexible vertical bar can be driven flexible in flexible vertical bar, drives rotation axis rotation
Electric assembly, the crosspiece being arranged between two flexible vertical bars, the traveling wheel that telescopic ladder top is set；
The flexible vertical bar individually includes a section outer tube and n section inner tube, and n is more than or equal to 2 and is positive integer, pipe range in every section
Spend equal, outer length of tube is slightly larger than single-unit inner tube length, the outer tube and every section cross-sectional shape of inner tube is all square and cross section
Size is sequentially reduced, and slides first segment inner tube in outer inner telescoping tube, and the second section inner tube inner telescoping tube in first segment is sliding
It is dynamic ... ..., and so on, the n-th section inner tube telescopic slide in the (n-1)th section inner tube；The outer tube top is equipped with bearing；It is described
First segment inner tube, the second section inner tube ..., the top of the n-th section inner tube be respectively equipped with first end cover, second end cover ..., the n-th end
Lid, first end cover, second end cover ..., be respectively equipped at the center of the n-th end cap the first circular hole, the second circular hole ..., the n-th circle
Hole, the first circular hole, the second circular hole ..., the size of the n-th circular hole be sequentially increased, be designed with internal screw thread on each circular-hole internal-wall；
The rotation axis individually includes n nodal axisn, every nodal axisn appearance be cylinder, every nodal axisn equal length and with every section inner tube
Equal length is sequentially increased from the first nodal axisn to the n-th nodal axisn cross section, the first nodal axisn is made to match with the first circular hole, the second section
Axis matches with the second circular hole ... ..., and so on, the n-th nodal axisn matches with the n-th circular hole, is from the second nodal axisn to the n-th nodal axisn
Hollow structure, and hollow shape is hexagonal prism shape, is sequentially increased from the second nodal axisn to the n-th nodal axisn hollow cross-section；First
Nodal axisn top is connected with outer tube top bearing；External screw thread, the interior spiral shell on external screw thread and circular hole are designed on the axle body of every nodal axisn
Line matches, and the internal screw thread rotatable engagement that covers the external screw thread of every nodal axisn with corresponding inner tube drives stretching for the inner tube
Contracting；First nodal axisn, the second nodal axisn ..., the bottom end of the (n-1)th nodal axisn be respectively equipped with the first hexagonal prisms, the second hexagonal prisms ...,
(n-1)th hexagonal prisms, and the outer diameter of each hexagonal prisms be slightly greater than where axis outer diameter, in the first hexagonal prisms and the second nodal axisn
Kongxiang cooperation, the second hexagonal prisms are matched with the hollow of third nodal axisn ... ..., and so on, the (n-1)th hexagonal prism and the n-th section
The hollow of axis matches, make every nodal axisn hexagonal prisms can only the hollow middle telescopic slide of next nodal axisn and it is relatively unrotatable；
The top between two flexible vertical bars is arranged in the electric assembly, and electric assembly includes transmission shaft, positive and negative rotation electricity
Machine, control circuit, battery；The transmission shaft is arranged between two the first nodal axisns and is engaged transmission with two the first nodal axisns, makes
Transmission shaft can drive two the first nodal axisn rotations；The motor is connect by gear with transmission shaft driven；The control circuit with
Motor is connected, and control circuit controls the positive and negative rotation of motor, is equipped in control circuit and rotates forward switch, reversal switch, travel switch,
Wherein at outer tube bottom end, another limit inductor is arranged at outer tube top end the limit inductor setting in travel switch,
Two limit inductors are all answered with first end cover conflict sense, when first end cover downlink or uplink to outer tube bottom end or top and are limited
Position inductor conflict sense is answered, and travel switch automatically disconnects the circuit, motor stalls；The battery is connected with control circuit,
Battery provides electric energy to motor；
The crosspiece includes outer tube crosspiece and inner tube crosspiece；The outer tube crosspiece is several, is uniformly arranged on two outer tubes
Between, wherein the outer tube crosspiece of the top is hollow, hollow interior setting electric assembly, the rotating forward switch in electric assembly, reversion
Switch is arranged on outer tube crosspiece outer wall；Said inner tube crosspiece is n, and n inner tube crosspiece is respectively provided at both sides corresponding n section
Between inner tube bottom end, inner tube crosspiece cross section is " Kan " shape, and inner tube crosspiece cross section size and corresponding inner tube cross section are big
Small identical, when inner tube is shunk completely, inner tube crosspiece is also correspondingly shunk completely；
The traveling wheel is arranged on telescopic ladder top, in rotation row on metope of ascending a height when traveling wheel stretches for ladder
It walks.
Further, the telescopic ladder is equipped with foot pedal, and foot pedal is disposed therein on an outer tube crosspiece.
Further, the telescopic ladder bottom end is equipped with antiskid plate, and antiskid plate and telescopic ladder bottom end are rotatablely connected.
Further, the telescopic ladder top is equipped with tool box.
Further, the battery is chargeable battery.
The course of work of the present invention is: the ladder in fully collapsed condition is placed on by a gradient and is ascended a height on metope,
The people that ascends a height stands on the footrests, and starting rotates forward switch, and motor drives transmission shaft rotation, and transmission shaft drives the rotation of the first nodal axisn, the
The external screw thread of one nodal axisn and the internal screw thread of first end cover cooperate and first segment inner tube are driven to extend downwardly, and first segment inner tube drives
Second nodal axisn is downwardly together；Meanwhile the first hexagonal prisms on nodal axisn drive the rotation of the second nodal axisn, the external screw thread of the second nodal axisn and the
The internal screw thread of two end caps, which cooperates, drives the second section inner tube to extend downwardly, and the second inner tube drives third axis downwardly together；...,
The rest may be inferred, and each inner tube that saves extends downwardly simultaneously driven by the motor, and entire ladder is driven to increase upwards, ladder driving walking
Wheel is in rotation walking upwards on metope of ascending a height；Same principle starts reversal switch, and each inner tube that saves is shunk simultaneously, and driving is entire
Ladder reduces downwards；It when first end cover moves to the limit (top and bottom end of outer tube), is answered with limit inductor conflict sense, row
Cheng Kaiguan is automatically disconnected the circuit, motor stalls, and ladder stops flexible.
The medicine have the advantages that automatic telescopic, telescopic extensions are big, are convenient for carrying, using extensive；The present invention and existing skill
Art maximum is not both that the people that ascends a height can be carried when flexible, greatly reduces the labor intensity for the people that ascends a height, and avoids the people apprentice that ascends a height
Step, which is climbed up, climbs down risk；In addition, the flexible mutual restriction of flexible vertical bar and rotation axis, therefore flexible vertical bar respectively saves pipe and rotation axis
Each nodal axisn is not fallen out；Equipped with travel switch, when flexible vertical bar reaches the flexible limit, automatic shutdown circuit, effective protection electricity
Machine prolongs the service life, energy saving.
Detailed description of the invention
If Fig. 1 is surface structure schematic diagram of the present invention.
If Fig. 2 is unilateral flexible vertical bar and its internal rotational axis structural schematic diagram of the invention.
If Fig. 3 is end cover structure schematic diagram of the present invention.
If Fig. 4 is rotation shaft structure schematic diagram of the present invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
Following example sets inner tube as three sections, i.e. n=3 in summary of the invention.
A kind of telescopic ladder, it is characterized in that: the telescopic ladder includes two identical flexible vertical bars, setting flexible
The electric assembly of the rotation axis 11, the drive rotation of rotation axis 11 that can drive flexible vertical bar flexible in vertical bar is arranged and stretches at two
Crosspiece between contracting vertical bar, the traveling wheel 6 that telescopic ladder top is set；
The flexible vertical bar individually includes a section outer tube 1 and three section inner tubes 10, every 10 equal length of section inner tube, the length of outer tube 1
Degree is slightly larger than 10 length of single-unit inner tube, outer tube 1 and the every section cross-sectional shape of inner tube 10 be all square and cross section size successively
Reduce, makes first segment inner tube A telescopic slide in outer tube 1, the second section inner tube B telescopic slide, third section in first segment inner tube A
Inner tube C telescopic slide in the second section inner tube B；1 top of outer tube is equipped with bearing 14；In the first segment inner tube A, the second section
Pipe B, third section inner tube C top be respectively equipped with first end cover G, second end cover H, third end cap I, first end cover G, second end cover
H, be respectively equipped at the center of third end cap I the first circular hole L, the second circular hole M, third circular hole N, the first circular hole L, the second circular hole M,
The size of third circular hole N is sequentially increased, and is designed with internal screw thread 19 on each 18 inner wall of circular hole；
The rotation axis 11 individually includes three nodal axisns, and every nodal axisn appearance is cylinder, every nodal axisn equal length and with every section
10 equal length of inner tube, from the first nodal axisn D to third nodal axisn F, cross section is sequentially increased, and makes the first nodal axisn D and the first circular hole L phase
Matching, the second nodal axisn E match with the second circular hole M, and third nodal axisn F matches with third circular hole N, the second nodal axisn E, third nodal axisn
F is hollow structure and hollow cross-section is sequentially increased, and hollow 21 shape is hexagonal prism shape；First top nodal axisn D and outer tube 1
Top bearing 14 is connected；External screw thread 20, external screw thread 20 and 19 phase of internal screw thread on circular hole are designed on the axle body of every nodal axisn 11
Matching makes the external screw thread 20 of every nodal axisn 11 with 19 rotatable engagement of internal screw thread on corresponding 10 end cap 17 of inner tube to drive the inner tube
It is flexible；First nodal axisn D, the second nodal axisn E bottom end be respectively equipped with the first hexagonal prisms J, the second hexagonal prisms K, and each hexagonal prisms
The outer diameter of axis, the first hexagonal prisms J are matched with the hollow O of the second nodal axisn E where 12 outer diameter is slightly greater than, the second hexagonal prisms K
Matched with the hollow P of third nodal axisn F, make every nodal axisn hexagonal prisms 12 can only in hollow the 21 of next nodal axisn telescopic slide and
It is relatively unrotatable；
The top between two flexible vertical bars is arranged in the electric assembly, and electric assembly includes transmission shaft 16, positive and negative rotation
Motor 15, control circuit, battery；The transmission shaft 16 is arranged between two the first nodal axisn D and is engaged with two the first nodal axisn D
Transmission enables transmission shaft 16 to drive two the first nodal axisn D rotations；The motor 15 is sequentially connected by gear and transmission shaft 16；
The control circuit is connected with motor 15, and control circuit controls the positive and negative rotation of motor 15, is equipped in control circuit and rotates forward switch
4, reversal switch 5, travel switch, wherein the setting of in travel switch a limit inductor 13 is in 1 bottom end of outer tube, another limit
Position inductor 13 is arranged on 1 top of outer tube, and two limit inductors 13 are all answered with first end cover G conflict sense, when under first end cover G
It goes or is answered when going upward to 1 bottom end of outer tube or top with 13 conflict sense of limit inductor, travel switch automatically disconnects the circuit, and motor stops
Rotation stop is dynamic；The battery is connected with control circuit, and battery provides electric energy to motor 15；
The crosspiece includes outer tube crosspiece 7 and inner tube crosspiece 8；The outer tube crosspiece 7 is several, is uniformly arranged on outside two
Between pipe 1, wherein the outer tube crosspiece 7 of the top is hollow, hollow interior setting electric assembly, rotating forward switch 4 in electric assembly,
Reversal switch 5 is arranged on 7 outer wall of outer tube crosspiece；Said inner tube crosspiece 8 is three, and three inner tube crosspieces 8 are separately positioned on two
Between corresponding three sections inner tube, 10 bottom end in side, 8 cross section of inner tube crosspiece be fall " Kan " shape, 8 cross section size of inner tube crosspiece with it is right
The inner tube cross section size answered is identical, and when inner tube 10 is shunk completely, inner tube crosspiece 8 is also correspondingly shunk completely；
The traveling wheel 6 is arranged on telescopic ladder top, in rotation row on metope of ascending a height when traveling wheel 6 stretches for ladder
It walks.
Further, the telescopic ladder is equipped with foot pedal 2, and foot pedal 2 is disposed therein on an outer tube crosspiece 7.
Further, the telescopic ladder bottom end is equipped with antiskid plate 9, and antiskid plate 9 and telescopic ladder bottom end are rotatablely connected.
Further, the telescopic ladder top is equipped with tool box 3.
Further, the battery is chargeable battery.
Claims (5)
1. a kind of telescopic ladder, it is characterized in that: the telescopic ladder includes two identical flexible vertical bars, setting flexible perpendicular
The electric assembly of the rotation axis, drive rotation axis rotation that can drive flexible vertical bar flexible in bar is arranged in two flexible vertical bars
Between crosspiece, the traveling wheel on telescopic ladder top is set；
The flexible vertical bar individually includes a section outer tube and n section inner tube, and n is more than or equal to 2 and is positive integer, every section inner tube length phase
It is slightly larger than single-unit inner tube length Deng, outer length of tube, the outer tube and every section cross-sectional shape of inner tube is all square and cross section size
It is sequentially reduced, slides first segment inner tube in outer inner telescoping tube, the second section inner tube telescopic slide ... ... in first segment inner tube,
The rest may be inferred, the n-th section inner tube telescopic slide in the (n-1)th section inner tube；The outer tube top is equipped with bearing；The every section of said inner tube
Top be designed with end cap, circular hole is designed at end cap central, from first segment inner tube end cap circular hole to the n-th section inner tube end cap circular hole
It is sequentially increased, spiral groove is designed on circular-hole internal-wall；
The rotation axis individually includes n nodal axisn, every nodal axisn appearance be cylinder, every nodal axisn equal length and with every section inner tube length
It is equal, it is sequentially increased from the first nodal axisn to the n-th nodal axisn cross section, wherein the n-th nodal axisn cross section is less than the n-th section inner tube inscribed circle,
It is hollow structure from the second nodal axisn to the n-th nodal axisn, and hollow shape is hexagonal prism shape, from the second nodal axisn into the n-th nodal axisn
Empty cross section is sequentially increased；First nodal axisn top is connected with outer tube top bearing；Spiral prominence is designed on the axle body of every nodal axisn
It rises, the spiral groove that wherein first segment axial screw protrusion is covered with first segment inner tube matches, the spiral prominence of the second nodal axisn
It plays the spiral groove covered with the second section inner tube to match ... ..., and so on, in the spiral salient of the n-th nodal axisn and the n-th section
Spiral groove in pipe end-cap matches, and the spiral groove rotation for covering the spiral salient of every nodal axisn with corresponding inner tube is matched
It closes to drive the flexible of the inner tube；It is designed with hexagonal prism from every nodal axisn bottom end of first nodal axisn into the (n-1)th nodal axisn, each
The outer diameter of axis where the outer diameter of hexagonal prism is slightly greater than, the hexagonal prism of the first nodal axisn and the hollow sliding of the second nodal axisn are matched
It closes, hexagonal prism and the hollow of third nodal axisn of the second nodal axisn are slidably matched ... ..., and so on, six ribs of the (n-1)th nodal axisn
Cylinder is slidably matched with the hollow of the n-th nodal axisn, drive the hexagonal prism of every nodal axisn can by the hollow cooperation of next nodal axisn
Next nodal axisn common rotation, and the hexagonal prism of every nodal axisn can be in the hollow interior telescopic slide of next nodal axisn；
The top between two flexible vertical bars is arranged in the electric assembly, and electric assembly includes transmission shaft, clockwise and anticlockwise motor, control
Circuit processed, battery；The transmission shaft is arranged between two the first nodal axisns and is engaged transmission with two the first nodal axisns, makes transmission shaft
Two the first nodal axisn rotations can be driven；The motor is connect by gear with transmission shaft driven；The control circuit and motor phase
Connection, control circuit control the positive and negative rotation of motor, are equipped in control circuit and rotate forward switch, reversal switch, travel switch, wherein going
Journey opens the limit inductor setting in the Central Shanxi Plain at outer tube bottom end, and the setting of another limit inductor is in outer tube top end, two limits
Position inductor is all answered with first segment inner tube end cap conflict sense, when first segment inner tube end cap downlink or uplink to outer tube bottom end or top
When answered with limit inductor conflict sense, travel switch automatically disconnect the circuit, motor stalls；The battery and control circuit phase
Connection, battery provide electric energy to motor；
The crosspiece includes outer tube crosspiece and inner tube crosspiece；The outer tube crosspiece is several, is uniformly arranged between two outer tubes,
Wherein the crosspiece of the top is hollow, hollow interior setting electric assembly, and the rotating forward switch, reversal switch setting in electric assembly exist
On outer tube crosspiece outer wall；Said inner tube crosspiece is n, n inner tube crosspiece be respectively provided at both sides corresponding n save inner tube bottom end it
Between, inner tube crosspiece cross section is " Kan " shape, and inner tube crosspiece cross section size is identical as corresponding inner tube cross section size, when interior
When pipe is shunk completely, inner tube crosspiece is also correspondingly shunk completely；
The traveling wheel is arranged on telescopic ladder top, in rotation walking on metope of ascending a height when traveling wheel stretches for ladder.
2. a kind of telescopic ladder according to claim 1, it is characterized in that: the telescopic ladder is equipped with foot pedal, foot pedal
It is disposed therein on an outer tube crosspiece.
3. a kind of telescopic ladder according to claim 1, it is characterized in that: the telescopic ladder bottom end is equipped with antiskid plate, it is anti-skidding
Plate and telescopic ladder bottom end are rotatablely connected.
4. a kind of telescopic ladder according to claim 1, it is characterized in that: the telescopic ladder top is equipped with tool box.
5. a kind of telescopic ladder according to claim 1, it is characterized in that: the battery is chargeable battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810112107.3A CN108468507B (en) | 2018-02-05 | 2018-02-05 | A kind of telescopic ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810112107.3A CN108468507B (en) | 2018-02-05 | 2018-02-05 | A kind of telescopic ladder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108468507A CN108468507A (en) | 2018-08-31 |
| CN108468507B true CN108468507B (en) | 2019-08-02 |
Family
ID=63266112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810112107.3A Active CN108468507B (en) | 2018-02-05 | 2018-02-05 | A kind of telescopic ladder |
Country Status (1)
| Country | Link |
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| CN (1) | CN108468507B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322613B (en) * | 2018-11-27 | 2020-03-24 | 苏州东润梯业有限公司 | Ladder locking mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2876043Y (en) * | 2005-12-30 | 2007-03-07 | 吉林大学 | Mechanical type lifter |
| CN202300170U (en) * | 2011-10-26 | 2012-07-04 | 首都航天机械公司 | Portable and rapid double-pole climbing ladder |
| CN206942632U (en) * | 2017-02-08 | 2018-01-30 | 河北工程大学 | It is a kind of voluntarily to control mobile staircase |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140246271A1 (en) * | 2013-02-11 | 2014-09-04 | Paul Morris Davies | Extension ladder incorporating a winch-operated elevator |
-
2018
- 2018-02-05 CN CN201810112107.3A patent/CN108468507B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2876043Y (en) * | 2005-12-30 | 2007-03-07 | 吉林大学 | Mechanical type lifter |
| CN202300170U (en) * | 2011-10-26 | 2012-07-04 | 首都航天机械公司 | Portable and rapid double-pole climbing ladder |
| CN206942632U (en) * | 2017-02-08 | 2018-01-30 | 河北工程大学 | It is a kind of voluntarily to control mobile staircase |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108468507A (en) | 2018-08-31 |
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Effective date of registration: 20190418 Address after: 230000 Anhui Hefei high tech Zone Innovation Industrial Park two phase J2 District C block 18 floor. Applicant after: HEFEI LONGTUTEM INFORMATION TECHNOLOGY Co.,Ltd. Address before: Room 2506, Building 1, Xinhua City, Suiyang District, Shangqiu City, Henan Province Applicant before: Wei Min |
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Effective date of registration: 20190708 Address after: 321306 No. 19 Weitai Road, Industrial Functional Zone, Zhiying Town, Yongkang City, Jinhua City, Zhejiang Province Applicant after: ZHEJIANG YONGAN DELI INDUSTRY & TRADE CO.,LTD. Address before: 230000 Anhui Hefei high tech Zone Innovation Industrial Park two phase J2 District C block 18 floor. Applicant before: HEFEI LONGTUTEM INFORMATION TECHNOLOGY Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A telescopic ladder Effective date of registration: 20230109 Granted publication date: 20190802 Pledgee: Yongkang branch of the Industrial Commercial Bank of China Ltd. Pledgor: ZHEJIANG YONGAN DELI INDUSTRY & TRADE CO.,LTD. Registration number: Y2023330000066 |
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