CN111005670A - Combined type climbing tool for straight bulkhead of cargo hold - Google Patents
Combined type climbing tool for straight bulkhead of cargo hold Download PDFInfo
- Publication number
- CN111005670A CN111005670A CN201911175226.4A CN201911175226A CN111005670A CN 111005670 A CN111005670 A CN 111005670A CN 201911175226 A CN201911175226 A CN 201911175226A CN 111005670 A CN111005670 A CN 111005670A
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- China
- Prior art keywords
- ladder
- square steel
- ladder frame
- platform
- cargo hold
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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
- E06C1/125—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic with tubular longitudinal members nested within each other
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C5/00—Equipment usable both on slipways and in dry docks
-
- 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
- E06C7/16—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
- E06C7/42—Ladder feet; Supports therefor
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Ladders (AREA)
Abstract
The invention relates to a combined type climbing tool for a straight bulkhead of a cargo hold, which comprises a bottom supporting platform and a climbing ladder erected on the bottom supporting platform, wherein the bottom supporting platform comprises a foot platform, a group of adjustable supporting legs are symmetrically arranged below the foot platform, and a positioning sleeve for fixing the climbing ladder is arranged on the foot platform; the ascending ladder is formed by sequentially connecting a first ladder frame and a second ladder frame, and the first ladder frame and the second ladder frame are connected with the straight bulkhead through a magnetic support. During the use, the extension of height on straight bulkhead can be realized to bottom supporting platform and the cooperation of ladder of ascending a height, and the extension of ladder of ascending a height is carried out according to on-the-spot actual demand, realizes the construction operation on the straight bulkhead, reduces on-the-spot scaffold frame simultaneously and sets up work load, reduces constructor intensity of labour, improves the efficiency of construction.
Description
Technical Field
The invention relates to the technical field of climbing tools, in particular to a combined climbing tool for a straight bulkhead of a cargo hold.
Background
At shipbuilding in-process, after the cargo hold region carries on, because part ship type deck face hatch board is less, only supplies personnel to come in and go out, if will be under construction in the cargo hold is inside, need set up a large amount of scaffolds, work load is huge and cause very easily to collide with the damage cargo hold surface, causes the dual loss of time and economy.
Therefore, in order to ensure that the construction operation on the straight compartment of the cargo area is carried out at the slipway/dock stage, a climbing tool which is small in size, convenient to assemble and disassemble, convenient to use, safe and stable and free of the subsequent residual repairing problem is urgently needed.
Disclosure of Invention
The invention aims to provide an improved combined type climbing tool for a straight cabin wall of a cargo cabin, which is provided with a bottom supporting platform and a matched climbing ladder, can realize climbing in the height direction, is convenient for workers to climb on the straight cabin wall of the cargo cabin, and is convenient to detach and install.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a combination formula frock of climbing for flat bulkhead of cargo hold, combination formula frock of climbing installs in the junction of infrabasal plate and flat bulkhead, its characterized in that: the combined type climbing tool comprises a bottom supporting platform and a climbing ladder erected on the bottom supporting platform, wherein the bottom supporting platform comprises a pedal platform, a group of adjustable supporting legs are symmetrically arranged below the pedal platform, and a positioning sleeve for fixing the climbing ladder is arranged on the pedal platform; the ascending ladder is formed by sequentially connecting a first ladder frame and a second ladder frame, and the first ladder frame and the second ladder frame are connected with the straight bulkhead through a magnetic support.
Preferably, the adjustable supporting foot pedal is formed by connecting a three-section type telescopic structure, the third-stage square steel is sequentially arranged in a telescopic mode, the second-stage square steel and the first-stage square steel, the third-stage square steel comprises a set of middle suspended third-stage steel bodies and supporting vertical feet arranged at two ends of each third-stage steel body, a direction cushion block is arranged at the bottom of each supporting vertical foot, each square steel body is of a hollow structure, each second-stage square steel also comprises a set of middle suspended second-stage square steel bodies, the second-stage square steel bodies are respectively sleeved at one ends of the two third-stage square steel bodies, each first stage comprises a set of middle suspended first-stage square steel bodies, the two first-stage square steel bodies are sleeved between the two second-stage square steels, the first stage, the second stage and the third-stage square steel bodies are provided with corresponding fixing holes, and detachable positioning pins are arranged in the fixing holes.
Further, first ladder frame includes the stand of two parallels, is equipped with a set of parallel arrangement's ladder strip between two parallel stands, the magnetism supporting component that is equipped with the one-to-one of two stands, and every magnetism supports including the spike and establishes the strong magnet in spike one side, and the surface of strong magnet is equipped with a sliding panel, and sliding panel controls the area that opens and shuts through a switch.
Furthermore, the second ladder frame structure is the same as the first ladder frame, the top parts of the first ladder frame and the second ladder frame are respectively provided with a top positioning sleeve for fixing the first ladder frame and the second ladder frame, the top positioning sleeve is H-shaped and comprises a group of side pipes and pedal pipes arranged between the side pipes, the side pipes are of a hollow structure, the middle parts of the side pipes are provided with sealing pieces, and the two ends of the side pipes are respectively sleeved at the connecting end parts of the first ladder frame and the second ladder frame.
Compared with the prior art, the technical scheme of the invention comprises the improvement of a plurality of details besides the improvement of the whole technical scheme, and particularly has the following beneficial effects:
1. according to the improved scheme, the bottom supporting platform and the ascending ladder erected on the bottom supporting platform are matched, so that the height of the ascending ladder can be extended on the straight bulkhead, the ascending ladder is lengthened according to actual field requirements, and construction operation on the straight bulkhead is realized;
2. according to the technical scheme, the bottom supporting platform comprises a pedal platform, a group of adjustable supporting legs are symmetrically arranged below the pedal platform, the size of the bottom supporting platform is reduced, the entrance and exit of a narrow cabin opening are realized, the workload of erecting a scaffold on site is reduced, the labor intensity of constructors is reduced, and the construction efficiency is improved;
3. the invention strengthens the structure of the ascending ladder, the ascending ladder is formed by sequentially connecting the first ladder frame and the second ladder frame, and the first ladder frame and the second ladder frame are connected with the straight bulkhead through the magnetic support, so that the continuous lengthening in the height direction can be realized, the left ladder frame and the right ladder frame do not topple over, the assembly and disassembly are convenient, the labor intensity of site constructors is effectively reduced, and the construction efficiency is improved;
4. the invention has reasonable structural design and wide adaptability, and is beneficial to popularization and application.
Drawings
Fig. 1 is a use state reference diagram of the present invention.
FIG. 2 is a partial schematic view of the bottom support platform of the present invention.
Fig. 3 is a partial schematic view of the ascending ladder according to the present invention.
Reference numerals:
1 straight bulkhead, 2 infrabasal plates, 3 first ladder frames, 4 second ladder frames, 5 arm braces, 6 strong magnets, 7 top position sleeve pipes, 8 step platforms, 9 position sleeve pipes, 10 first-level square steels, 11 second-level square steels, 12 third-level square steels, 13 direction cushion blocks, 14 shaft pins, 15 arc-shaped grooves, 16 positioning pins and 17 bolts.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a combined climbing tool for a straight bulkhead of a cargo hold, which is arranged at the joint of an inner bottom plate and the straight bulkhead, and particularly relates to a combined climbing tool in figure 1, wherein the combined climbing tool is different from the combined climbing tool in the prior art in that: the combined type climbing tool comprises a bottom supporting platform and a climbing ladder erected on the bottom supporting platform, wherein the bottom supporting platform comprises a pedal platform, a group of adjustable supporting legs are symmetrically arranged below the pedal platform, and a positioning sleeve for fixing the climbing ladder is arranged on the pedal platform; the ascending ladder is formed by sequentially connecting a first ladder frame and a second ladder frame, and the first ladder frame and the second ladder frame are connected with the straight bulkhead through a magnetic support.
During the use, but bottom sprag platform adjusts the atress stationarity of step platform through debugging formula supporting legs, because will be fit for different service environment, what consequently this step platform's area was done will be as little as possible, is fit for the use in transportation and narrow and small space.
Because the adjustable support step is total two sets ofly, the front and back correspondence sets up in the below of step platform, the adjustable support step in the place ahead is rotatable with the step platform and is connected, rotatable angle is 15-45 degrees, after the adjustable support step in the place ahead forms certain contained angle with the step platform, not only can be fit for the use in narrow and small space, can form more stable support to the step platform simultaneously, the adjustable support step in the back is fixed connection with the step platform, the step platform stability in the transportation with not fragile have been guaranteed.
In one embodiment, the assembled climbing tool comprises a bottom supporting platform and a climbing ladder. The bottom supporting platform consists of a pedal platform, three-stage adjustable supporting feet arranged below the pedal platform and a positioning sleeve arranged above the pedal platform and used for fixing the ascending ladder; the ladder for ascending height consists of a ladder frame, a magnetic support for stabilizing the ladder frame and a top positioning sleeve arranged at the top of the ladder frame. The bottom supporting platform and the climbing ladder are matched to finish continuous extension in the height direction, so that climbing operation on a straight bulkhead is realized.
Specifically, the two groups of adjustable supporting pedals are arranged in front and back corresponding to each other below the pedal platform, the front adjustable supporting pedals are rotatably connected with the pedal platform, and the rotatable angle is 15-45 degrees.
Support step with adjustable is formed by syllogic intussusception structural connection, be the third level square steel that overlaps the setting in proper order respectively, second level square steel and first order square steel, third level square steel includes the unsettled third party steel body that sets up in a set of centre and establishes the support foot at third party steel body both ends, every support foot bottom is equipped with the direction cushion, the square steel body is hollow structure, second level square steel also includes unsettled second level square steel body in a set of centre, second level square steel body overlaps respectively and establishes the one end at two third level square steel bodies, the unsettled first order square steel body in the middle of the first order includes a set of, two first order square steel body cover are located between two second level square steel, first, second, be equipped with corresponding fixed orifices on the third level square steel body, be equipped with the detachable locating pin in the fixed orifices. The first, second and third level square steel bodies are provided with fixed hole groups which are continuously arranged along the bodies, each group of fixed holes are correspondingly arranged on the upper and lower side surfaces of the first, second and third level square steel bodies, and the distance between the adjacent fixed holes is equal.
Further, divide into one-level square steel (biggest), second grade square steel (moderate) and tertiary square steel (minimum) by big to little in proper order, the square steel can insert by little to big in proper order to fix through the locating pin, can adjust the length direction of whole support step, guarantee to the stable stay of step platform, wherein the both ends of third grade square steel remain the through-hole and do not seal.
In another embodiment, the first ladder frame and the second ladder frame are respectively provided with six supporting feet which are evenly distributed at the upper, middle and lower positions of two upright posts of the first ladder frame and the second ladder frame, and top positioning sleeves are welded at the tops of the two upright posts.
Particularly, first ladder frame includes the stand of two parallels, is equipped with a set of parallel arrangement's ladder strip between two parallel stands, the magnetism supporting component that is equipped with the one-to-one of two stands, and every magnetism supports including the spike and establishes the strong magnet in spike one side, and the surface of strong magnet is equipped with a sliding panel, and sliding panel controls the area that opens and shuts through a switch, guarantees the adsorption area of strong magnet and then adjusts the size of its adsorption affinity.
The second ladder frame structure is the same as the first ladder frame, the top parts of the first ladder frame and the second ladder frame are respectively provided with a top positioning sleeve for fixing the first ladder frame and the second ladder frame, the top positioning sleeve is H-shaped and comprises a group of side pipes and pedal pipes arranged between the side pipes, the side pipes are of a hollow structure, the middle parts of the side pipes are provided with sealing pieces, and the two ends of the side pipes are respectively sleeved at the connecting end parts of the first ladder frame and the second ladder frame. The included angle between the bottom supporting platform and the ascending ladder ranges from 90 degrees to 105 degrees, and the preferred included angle ranges from 95 degrees to 102 degrees. When the bottom supporting platform and the ascending ladder form an angle larger than 90 degrees, the stability of the ascending ladder is better, the stress of the stepping platform is reduced, and the ascending ladder is ensured to extend to a higher height, such as about 18-25 meters, and the stepping platform can still bear.
In a specific embodiment, the pedal platform is a rectangular platform, the rear end of the pedal platform is provided with two round holes, and 2 positioning sleeves are respectively inserted into about half of the round holes and are welded and fixed; the front end of the pedal platform is provided with 2 small holes for installing shaft pins, and two 90-degree arc-shaped grooves are formed by taking the centers of the two small holes as circle centers respectively. Slidable bolts are arranged in the arc-shaped grooves, and platform fixing holes corresponding to the arc-shaped grooves are formed in the first-stage square steel.
When the adjustable supporting foot is used, the three-stage adjustable supporting foot below the bottom supporting platform is firstly shortened to be the shortest, the angle of the two supporting feet at the front end is adjusted to be 0 degree, the bolt 17 is screwed up for fixing, and the supporting feet at the front end and the rear end are parallel. The bottom support platform is vertically suspended from the hatch cover to the bottom of the cargo compartment using a crane. The bottom supporting platform position is adjusted for position sleeve 9 equals the length of arm brace 5 apart from the bulkhead distance, adjusts the length and the angle of three-level adjustable arm brace, guarantees bottom supporting platform's stability, fixes one-level square steel 10, second grade square steel 11 and tertiary square steel 12 length through locating pin 16, fixes the angle of two one-level square steels of front end through bolt 17 simultaneously.
Insert the bottom of first section ascending ladder 3 in bottom supporting platform position sleeve 9 to from the bottom up opens the strong magnet on the spike 5 on the first section ascending ladder 3 in proper order, makes every spike 5 adsorb on straight bulkhead 1.
Insert the bottom of second festival ascending stair 4 in the top position sleeve 7 of first festival ascending stair 3 to from the bottom up opens the strong magnet on the spike 5 on the second festival ascending stair 4 in proper order greatly, makes every spike 5 all adsorb on straight bulkhead 1.
And repeating the steps, and continuously increasing the ascending ladder to reach the height of the planned construction operation.
When the ladder is dismantled, the strong magnets on the supporting feet of the highest ascending ladder are closed from top to bottom in sequence, and then the ascending ladder is pulled out from the top positioning sleeve of the next ascending ladder. And repeating the steps to finish the removal of all the ascending ladders.
The invention has simple structure and convenient assembly and disassembly, avoids setting up a large number of scaffolds in the cargo hold area, effectively reduces the labor intensity of field construction personnel, improves the construction efficiency and has higher practical value.
The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific details set forth herein. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (8)
1. The utility model provides a combination formula frock of climbing for flat bulkhead of cargo hold, combination formula frock of climbing installs in the junction of infrabasal plate and flat bulkhead, its characterized in that: the combined type climbing tool comprises a bottom supporting platform and a climbing ladder erected on the bottom supporting platform, wherein the bottom supporting platform comprises a pedal platform, a group of adjustable supporting legs are symmetrically arranged below the pedal platform, and a positioning sleeve for fixing the climbing ladder is arranged on the pedal platform; the ascending ladder is formed by sequentially connecting a first ladder frame and a second ladder frame, and the first ladder frame and the second ladder frame are connected with the straight bulkhead through a magnetic support.
2. The combined climbing tool for the flat bulkhead of the cargo hold according to claim 1, wherein: support step with adjustable is formed by syllogic intussusception structural connection, be the third level square steel that overlaps the setting in proper order respectively, second level square steel and first order square steel, third level square steel includes the unsettled third party steel body that sets up in a set of centre and establishes the support foot at third party steel body both ends, every support foot bottom is equipped with the direction cushion, the square steel body is hollow structure, second level square steel also includes unsettled second level square steel body in a set of centre, second level square steel body overlaps respectively and establishes the one end at two third level square steel bodies, the unsettled first order square steel body in the middle of the first order includes a set of, two first order square steel body cover are located between two second level square steel, first, second, be equipped with corresponding fixed orifices on the third level square steel body, be equipped with the detachable locating pin in the fixed orifices.
3. The combined climbing tool for the flat bulkhead of the cargo hold according to claim 1, wherein: first ladder frame includes the stand of two parallels, is equipped with a set of parallel arrangement's ladder strip between two parallel stands, the magnetism supporting component that is equipped with the one-to-one of two stands, and every magnetism supports including the spike and establishes the strong magnet in spike one side, and the surface of strong magnet is equipped with a slip panel, and the slip panel controls the area that opens and shuts through a switch.
4. The combined climbing tool for the flat bulkhead of the cargo hold according to claim 3, wherein: the second ladder frame structure is the same as the first ladder frame, the top parts of the first ladder frame and the second ladder frame are respectively provided with a top positioning sleeve for fixing the first ladder frame and the second ladder frame, the top positioning sleeve is H-shaped and comprises a group of side pipes and pedal pipes arranged between the side pipes, the side pipes are of a hollow structure, the middle parts of the side pipes are provided with sealing pieces, and the two ends of the side pipes are respectively sleeved at the connecting end parts of the first ladder frame and the second ladder frame.
5. The combined climbing tool for the flat bulkhead of the cargo hold according to claim 2, wherein: the adjustable supporting pedals are arranged in two groups, the front and the back of the adjustable supporting pedals are correspondingly arranged below the pedal platform, the front adjustable supporting pedals are rotatably connected with the pedal platform, the rotatable angle is 15-45 degrees, and the rear adjustable supporting pedals are fixedly connected with the pedal platform.
6. The combined climbing tool for the flat bulkhead of the cargo hold according to claim 2, wherein: the first, second and third level square steel bodies are provided with fixed hole groups which are continuously arranged along the bodies, each group of fixed holes are correspondingly arranged on the upper and lower side surfaces of the first, second and third level square steel bodies, and the distance between the adjacent fixed holes is equal.
7. The combined climbing tool for the flat bulkhead of the cargo hold according to claim 1, wherein: the included angle between the bottom supporting platform and the ascending ladder ranges from 90 degrees to 105 degrees, and the preferred included angle ranges from 95 degrees to 102 degrees.
8. The combined climbing tool for the flat bulkhead of the cargo hold according to claim 2, wherein: the pedal platform is provided with a group of arc-shaped grooves which are symmetrically arranged, slidable bolts are arranged in the arc-shaped grooves, and the first-stage square steel is provided with platform fixing holes corresponding to the arc-shaped grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911175226.4A CN111005670A (en) | 2019-11-26 | 2019-11-26 | Combined type climbing tool for straight bulkhead of cargo hold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911175226.4A CN111005670A (en) | 2019-11-26 | 2019-11-26 | Combined type climbing tool for straight bulkhead of cargo hold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111005670A true CN111005670A (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911175226.4A Pending CN111005670A (en) | 2019-11-26 | 2019-11-26 | Combined type climbing tool for straight bulkhead of cargo hold |
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| Country | Link |
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| CN (1) | CN111005670A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396228A (en) * | 2021-12-16 | 2022-04-26 | 上海江南长兴造船有限责任公司 | Telescopic vertical ladder for ship and using method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101684718A (en) * | 2008-09-23 | 2010-03-31 | 李晓亮 | Fixed ladder |
| CN102134959A (en) * | 2011-04-07 | 2011-07-27 | 河南省电力公司郑州供电公司 | Ladder leg stabilizer capable of adjusting support area |
| US20140246271A1 (en) * | 2013-02-11 | 2014-09-04 | Paul Morris Davies | Extension ladder incorporating a winch-operated elevator |
| CN107724945A (en) * | 2017-09-30 | 2018-02-23 | 中广核研究院有限公司 | Combine cat ladder |
| CN212337125U (en) * | 2019-11-26 | 2021-01-12 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | Combined type climbing tool for straight bulkhead of cargo hold |
-
2019
- 2019-11-26 CN CN201911175226.4A patent/CN111005670A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101684718A (en) * | 2008-09-23 | 2010-03-31 | 李晓亮 | Fixed ladder |
| CN102134959A (en) * | 2011-04-07 | 2011-07-27 | 河南省电力公司郑州供电公司 | Ladder leg stabilizer capable of adjusting support area |
| US20140246271A1 (en) * | 2013-02-11 | 2014-09-04 | Paul Morris Davies | Extension ladder incorporating a winch-operated elevator |
| CN107724945A (en) * | 2017-09-30 | 2018-02-23 | 中广核研究院有限公司 | Combine cat ladder |
| CN212337125U (en) * | 2019-11-26 | 2021-01-12 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | Combined type climbing tool for straight bulkhead of cargo hold |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396228A (en) * | 2021-12-16 | 2022-04-26 | 上海江南长兴造船有限责任公司 | Telescopic vertical ladder for ship and using method thereof |
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