CN111377036A - Portable flexible splicing ladder - Google Patents
Portable flexible splicing ladder Download PDFInfo
- Publication number
- CN111377036A CN111377036A CN202010305750.5A CN202010305750A CN111377036A CN 111377036 A CN111377036 A CN 111377036A CN 202010305750 A CN202010305750 A CN 202010305750A CN 111377036 A CN111377036 A CN 111377036A
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- Prior art keywords
- ladder
- lining body
- connecting block
- portable flexible
- nylon lining
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- 239000004677 Nylon Substances 0.000 claims abstract description 32
- 229920001778 nylon Polymers 0.000 claims abstract description 32
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000001788 irregular Effects 0.000 abstract description 8
- 230000009194 climbing Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 206010063659 Aversion Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B29/00—Accommodation for crew or passengers not otherwise provided for
- B63B29/20—Arrangements or adaptations of ladders
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Ladders (AREA)
Abstract
The invention relates to the technical field of marine gangways, and discloses a portable flexible splicing ladder which comprises ladder frames and flexible connecting devices, wherein adjacent ladder frames are rotatably connected through the flexible connecting devices, each flexible connecting device comprises a connecting block, a pin shaft, a nylon lining body, a screw and a nut, the nylon lining body is fixedly arranged on one of the two adjacent ladder frames through the screw, the connecting block is fixedly arranged on the other ladder frame and corresponds to the nylon lining body, the connecting block extends out towards the outer side of the edge of each ladder frame, the extending tail end of the connecting block is rotatably connected with the nylon lining body through the pin shaft, the lower parts of the left side and the right side of each ladder frame are respectively provided with a roller assembly, each roller assembly comprises a roller support, a bolt, a self-locking nut and a roller, and the front end of the ladder frame positioned at the head end is provided. Therefore, the invention has the advantages of simple structure, convenient disassembly, wide application range, high practicability and high safety, and can be suitable for various irregular inclined planes or curved surfaces.
Description
Technical Field
The invention relates to the technical field of marine gangways, in particular to a portable flexible splicing ladder.
Background
At present, in order to reduce the resistance in the navigation process, a ship is generally designed to be streamline, particularly, the ship is in a bow-stern part, the line is large, a plurality of non-planar positions with different gradients or irregular inclined planes and the like exist on the ship, the ladder is difficult to arrange, particularly, a portable ladder needs to be arranged at the position of a cargo hold and a ballast tank, which needs to meet the requirement of an inspection channel, the line of the cargo hold close to the bow part is large, so that the position of the inspection channel at the side of the cargo hold cannot be hung on a common straight ladder, the long straight ladder cannot be bent, the long straight ladder cannot be installed due to the irregular line, the straight ladder cannot be climbed if being hung in sections. The common portable ladder can only be designed to be suitable for a certain specific position, various specifications of portable ladders need to be designed for a whole ship inspection channel, and the portable ladders are less in use, so that resource waste is caused.
Disclosure of Invention
The invention aims to solve the problem of providing a portable flexible splicing ladder which is simple in structure, convenient to disassemble, capable of being suitable for various irregular inclined planes or curved surfaces, wide in application range and high in practicability and safety.
In order to solve the technical problems, the invention provides a portable flexible splicing ladder, which comprises a plurality of ladder frames and flexible connecting devices, wherein the flexible connecting devices are arranged on the left side and the right side of the ladder frames, the adjacent ladder frames are rotatably connected through the flexible connecting devices, each flexible connecting device comprises a connecting block, a pin shaft, a nylon lining body, a screw and a nut, the nylon lining body is fixedly arranged on one of the two adjacent ladder frames through the screw, the connecting block is fixedly arranged on the other ladder frame and corresponds to the nylon lining body, pin holes for the pin shafts to pass through are formed in the nylon lining body and the connecting block, the connecting block extends towards the outer side of the ladder frame, and the extending tail end of the connecting block is rotatably connected with the nylon lining body through the pin shafts, the nut sets up sell epaxial and with the connecting block presses to the nylon lining body, the lower part of the left and right sides of ladder frame all is equipped with wheel components, wheel components includes gyro wheel support, bolt, auto-lock nut and gyro wheel, the gyro wheel support is fixed to be set up the lower part of the left and right sides of ladder frame, the gyro wheel support with the gyro wheel all is equipped with the confession the bolt hole that the bolt passed, the auto-lock nut sets up on the bolt and will the gyro wheel rotationally sets up in the gyro wheel support, be located the head end the front end of ladder frame is equipped with anti-disengaging device, anti-disengaging device includes anticreep couple and coupler knuckle, anticreep couple detachably sets up on the ladder frame, the coupler knuckle passes through the spring hinge setting and is in the opening part of couple.
As the preferable scheme of the invention, a spring gasket is arranged between the nut and the pin shaft.
As a preferable aspect of the present invention, the roller assembly is located below the nylon liner body.
As a preferable aspect of the present invention, the roller is a one-way roller.
As a preferable scheme of the invention, a flat gasket is arranged between the self-locking nut and the bolt.
As a preferable scheme of the invention, the ladder frame comprises a left support, a right support and pedals connected between the left support and the right support, the left support and the right support are arranged in parallel, the pedals are arranged in plurality and are all vertical to the left support, and the pedals are uniformly arranged at intervals.
As a preferable scheme of the present invention, the nylon lining body is disposed at the rear end of the left bracket and the rear end of the right bracket, the connection plate is disposed at the front end of the left bracket and the front end of the right bracket and corresponds to the nylon lining body, and the anti-drop hook is detachably disposed on the pedal.
As a preferable scheme of the invention, the ladder frame is provided with ten ladder frames, the length of each ladder frame is 1.2 meters, and the number of the pedals is four.
In a preferred embodiment of the present invention, the step is a round bar with a saw-toothed surface.
In a preferred embodiment of the present invention, the ladder frame is made of stainless steel.
Compared with the prior art, the portable flexible splicing ladder has the following beneficial effects:
according to the invention, the flexible connecting device is used for flexibly connecting the plurality of ladder frames, so that a user can adjust the rotation angle of each ladder frame according to different curvatures of the ship surface, the portable flexible splicing ladder is matched with various irregular inclined planes or curved surfaces on the ship surface in shape, the climbing of the user is facilitated, and the safety is greatly improved; the flexible connecting device detachably connects the adjacent ladder frames through the pin shaft, can be suitable for positions with different length ranges on the ship surface by disassembling and assembling the ladder frames, improves the universality, can also facilitate a user to fold the portable flexible splicing ladder, is convenient to carry, improves the utilization rate, and has simple structure and low manufacturing cost; through the design of the roller assemblies, the portable flexible splicing ladder is favorable for sliding on the ship surface, and a user can conveniently move the portable flexible splicing ladder on the ship surface, so that the user can conveniently slide the portable flexible splicing ladder even if the portable flexible splicing ladder is long in length and heavy in weight, and the practicability is improved; through the design of anticreep device, can fix the head end of portable flexible concatenation ladder on the ship firmly, prevent that portable flexible concatenation ladder from droing from the deck for the user also can make progress the climbing steadily on the deck of slope, effectively avoid portable flexible concatenation ladder to produce the aversion and lead to the accident to take place, further improved the security. Therefore, the invention has the advantages of simple structure, convenient disassembly, wide application range, high practicability and high safety, and can be suitable for various irregular inclined planes or curved surfaces.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is an assembly view of a portable flexible splice ladder provided by the present invention;
FIG. 2 is a side view of a portable flexible ganged ladder provided by the present invention;
FIG. 3 is a front view of a portable flexible ganged ladder provided by the present invention;
FIG. 4 is a schematic structural view of the flexible linkage and the roller assembly;
FIG. 5 is a schematic structural view of the anti-separation device;
fig. 6 is a cross-sectional view of the pedal.
In the figure: 1. ladder frame, 11, left socle, 12, right branch frame, 13, footboard, 2, flexible connection device, 21, connecting block, 22, round pin axle, 23, nylon lining body, 24, screw, 25, lid type nut, 26, spring gasket, 3, roller components, 31, roller support, 32, bolt, 33, auto-lock nut, 34, gyro wheel, 35, flat gasket, 4, anticreep device, 41, anticreep couple, 42, spacing knuckle, 43, spring hinge.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In the description of the present invention, it should be understood that the terms "central", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., used herein are used in the orientation or positional relationship indicated in the drawings, which are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 to 5, a preferred embodiment of the present invention is a portable flexible splicing ladder, which includes a plurality of ladder frames 1 and flexible connection devices 2, wherein the ladder frames 1 are provided with a plurality of flexible connection devices 2, the flexible connection devices 2 are disposed on left and right sides of the ladder frames 1, adjacent ladder frames 1 are rotatably connected through the flexible connection devices 2, each flexible connection device 2 includes a connection block 21, a pin 22, a nylon lining body 23, a screw 24 and a cap nut 25, the nylon lining body 23 is fixedly disposed on one of the adjacent two ladder frames 1 through the screw 24, the connection block 21 is fixedly disposed on the other ladder frame 1 and corresponds to the nylon lining body 23, pin holes through which the pin 22 can pass are disposed on the nylon lining body 23 and the connection block 21, the connecting block 21 extends out towards the outer side of the edge of the ladder frame 1, the extending tail end of the connecting block is rotatably connected with the nylon lining body 23 through the pin shaft 22, the cover-shaped nut 25 is arranged on the pin shaft 22 and presses the connecting block 21 to the nylon lining body 23, the roller assemblies 3 are arranged on the lower portions of the left side and the right side of the ladder frame 1 respectively, each roller assembly 3 comprises a roller support 31, a bolt 32, a self-locking nut 33 and a roller 34, the roller supports 31 are fixedly arranged on the lower portions of the left side and the right side of the ladder frame 1, the roller supports 31 and the rollers 34 are respectively provided with a bolt 32 hole through which the bolt 32 can pass, the self-locking nuts 33 are arranged on the bolts 32 and rotatably arrange the rollers 34 in the roller supports 31, the front end of the ladder frame 1 at the head end is provided with an anti-falling device 4, and the anti-falling device 4 comprises an anti-falling hook, the anti-drop hook 41 is detachably arranged on the ladder frame 1, and the hook tongue 42 is arranged at the opening of the hook through a spring hinge 43.
Therefore, the flexible connecting device 2 flexibly connects the ladder frames 1, and a user can adjust the rotation angle of each ladder frame 1 according to different curvatures of the ship surface, so that the portable flexible splicing ladder is matched with various irregular inclined surfaces or curved surfaces on the ship surface in shape, the climbing of the user is facilitated, and the safety is greatly improved; the flexible connecting device 2 detachably connects the adjacent ladder frames 1 through the pin shaft 22, the ladder frames 1 can be assembled and disassembled to be suitable for positions with different length ranges on the ship surface, the universality is improved, a user can conveniently fold the portable flexible splicing ladder, the carrying is convenient, the utilization rate is improved, and the flexible connecting device 2 is simple in structure and low in manufacturing cost; through the design of the roller assemblies 3, the portable flexible splicing ladder is favorable for sliding on the ship surface, and a user can conveniently move the portable flexible splicing ladder on the ship surface, so that the user can conveniently slide the portable flexible splicing ladder even if the portable flexible splicing ladder is long in length and heavy in weight, and the practicability is improved; through the design of anticreep device 4, can fix the head end of portable flexible concatenation ladder on the ship firmly, prevent that portable flexible concatenation ladder from droing from the deck of a ship for the user also can make progress the climbing steadily on the deck of a ship of slope, effectively avoid portable flexible concatenation ladder to produce the aversion and lead to the accident to take place, further improved the security. Therefore, the invention has the advantages of simple structure, convenient disassembly, wide application range, high practicability and high safety, and can be suitable for various irregular inclined planes or curved surfaces.
Exemplarily, the cap nut 25 and the pin shaft 22 are provided with the spring gasket 26 therebetween, the spring gasket 26 can increase the friction force between the cap nut 25 and the pin shaft 22, and effectively prevent the cap nut 25 from loosening and causing the bolt 32 to fall off in the rotation process of the ladder frame 1, so that the connection between the ladder frames 1 is more stable, and the safety is improved.
Exemplarily, roller assembly 3 is located the below of nylon lining body 23, roller assembly 3 can play supporting role and cushioning effect for the corner position that portable flexible concatenation ladder formed, can strengthen the bearing capacity of the corner of portable flexible concatenation ladder, can also cushion the pressure that the corner of portable flexible concatenation ladder received, effectively avoid the corner of portable flexible concatenation ladder to warp or damage because pressure is too big.
Illustratively, the rollers 34 are one-way rollers, which is more beneficial to maintaining the linearity of the portable flexible splicing ladder on the walking path, and reduces the abrasion and potential safety hazard of the pin shaft 22 caused by the influence of lateral force on the connection between the ladder frame 1 and the ladder frame 1, so that the user can climb more stably, and the safety is greatly improved.
Illustratively, a flat gasket 35 is arranged between the self-locking nut 33 and the bolt 32, and the flat gasket 35 can increase the friction force between the self-locking nut 33 and the bolt 32, thereby effectively preventing the bolt 32 from falling off due to the looseness of the self-locking nut 33 in the rotation process of the roller 34, and improving the safety of the roller assembly 3.
Exemplarily, the ladder frame 1 includes a left support 11, a right support 12 and a pedal 13 connected between the left support 11 and the right support 12, the left support 11 and the right support 12 are disposed in parallel, the pedal 13 is provided with a plurality of pedals 13, and the pedals 13 are all perpendicular to the left support 11, and the pedals 13 are uniformly arranged at intervals.
In this embodiment, the ladder frame 1 is provided with ten ladder frames, each ladder frame 1 has a length of 1.2 meters, and the pedals 13 are provided with four ladder frames.
In this embodiment, the nylon lining body 23 is disposed at the rear end of the left bracket 11 and the rear end of the right bracket 12, the connecting plate is disposed at the front end of the left bracket 11 and the front end of the right bracket 12 and corresponds to the nylon lining body 23, and the anti-falling hook 41 is detachably disposed on the pedal 13.
Exemplarily, as shown in fig. 6, the pedal 13 is made of round steel with a serrated surface, so that a good anti-slip effect can be achieved, a user can be effectively prevented from falling and being injured due to slippery feet in the climbing process, and the safety of the portable flexible splicing ladder is improved.
Exemplarily, the ladder frame 1 is made of stainless steel, which has good chemical corrosion resistance and electrochemical corrosion resistance, and good high temperature resistance and low temperature resistance, so that the portable flexible splicing ladder is not easy to corrode or deteriorate due to long-term contact with seawater with strong corrosivity or long-term exposure to the sun and rain, has long service life, has high strength and high hardness, does not deform even bearing heavy weight, has good welding performance, and can be conveniently processed and produced.
In the description of the present invention, it is to be understood that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, either fixedly connected, detachably connected, or integrally connected, unless otherwise explicitly stated or limited; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A portable flexible splicing ladder is characterized by comprising a plurality of ladder frames and flexible connecting devices, wherein the flexible connecting devices are arranged on the left side and the right side of the ladder frames, the adjacent ladder frames are rotatably connected through the flexible connecting devices, each flexible connecting device comprises a connecting block, a pin shaft, a nylon lining body, a screw and a nut, the nylon lining body is fixedly arranged on one of the two adjacent ladder frames through the screw, the connecting block is fixedly arranged on the other ladder frame and corresponds to the nylon lining body, pin holes for the pin shafts to pass through are formed in the nylon lining body and the connecting block, the connecting block extends out of the outer side of the ladder frame, the extending tail end of the connecting block is rotatably connected with the nylon lining body through the pin shaft, the nut is arranged on the pin shaft and presses the connecting block to the nylon lining body, the lower part of the left and right sides of ladder frame all is equipped with wheel components, wheel components includes gyro wheel support, bolt, auto-lock nut and gyro wheel, the gyro wheel support is fixed to be set up the lower part of the left and right sides of ladder frame, the gyro wheel support with the gyro wheel all is equipped with and supplies the bolt hole that the bolt passed, auto-lock nut sets up on the bolt and will the gyro wheel rotationally sets up in the gyro wheel support, be located the head end the front end of ladder frame is equipped with the anticreep device, the anticreep device includes anticreep couple and coupler tongue, anticreep couple detachably sets up on ladder frame, the coupler tongue passes through the spring hinge setting and is in the opening part of couple.
2. The portable flexible splicing ladder of claim 1, wherein a spring washer is arranged between the nut and the pin shaft.
3. A portable flexible ganged ladder as claimed in claim 1, wherein the roller assemblies are located below the nylon liner body.
4. A portable flexible ganged ladder as claimed in claim 1, wherein the rollers are one-way rollers.
5. The portable flexible splicing ladder of claim 1, wherein a flat gasket is arranged between the self-locking nut and the bolt.
6. The portable flexible splicing ladder of claim 1, wherein the ladder frame comprises a left support, a right support and pedals connected between the left support and the right support, the left support and the right support are arranged in parallel, the pedals are arranged in a plurality and are all perpendicular to the left support, and the pedals are arranged at equal intervals.
7. The portable flexible splicing ladder of claim 6, wherein the nylon lining body is arranged at the rear end of the left support and the rear end of the right support, the connecting plate is arranged at the front end of the left support and the front end of the right support and corresponds to the nylon lining body, and the anti-falling hook is detachably arranged on the pedal.
8. A portable flexible splicing ladder according to claim 1, wherein said ladder frames are ten, each of said ladder frames is 1.2 m in length, and said footrests are four.
9. The portable flexible splicing ladder of claim 6, wherein the pedals are round steel with a serrated surface.
10. The portable flexible splicing ladder of claim 1, wherein the ladder frame is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010305750.5A CN111377036A (en) | 2020-04-17 | 2020-04-17 | Portable flexible splicing ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010305750.5A CN111377036A (en) | 2020-04-17 | 2020-04-17 | Portable flexible splicing ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111377036A true CN111377036A (en) | 2020-07-07 |
Family
ID=71217618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010305750.5A Pending CN111377036A (en) | 2020-04-17 | 2020-04-17 | Portable flexible splicing ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111377036A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113581386A (en) * | 2021-08-11 | 2021-11-02 | 上海外高桥造船有限公司 | Special-shaped vertical ladder for inclined bottom channel of cargo hold of ultra-large liquefied gas carrier and ship |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045775U (en) * | 1989-02-11 | 1989-10-11 | 李葵荣 | Ii type aluminium alloy all-purpose folding ladder |
| CN101498195A (en) * | 2008-12-25 | 2009-08-05 | 戴浩忠 | PMA aluminum split joint type portable ladder |
| CN204552585U (en) * | 2015-04-24 | 2015-08-12 | 长江三峡设备物资有限公司 | A kind of from bending extension ladder |
| CN206429178U (en) * | 2017-01-19 | 2017-08-22 | 李艳君 | A kind of spliced ladder of highway engineering |
| CN206681660U (en) * | 2017-02-07 | 2017-11-28 | 无锡市欣帆船舶设备有限公司 | A kind of aluminum retractable portable ladder |
| CN107842305A (en) * | 2017-11-22 | 2018-03-27 | 国网山东省电力公司曲阜市供电公司 | Maintaining platform ladder and maintaining platform ladder application method |
| CN208456481U (en) * | 2018-05-04 | 2019-02-01 | 南京林业大学 | A foldable and spliced ladder for electrical maintenance |
| CN208630587U (en) * | 2018-07-10 | 2019-03-22 | 北京汽车股份有限公司 | Pedal assembly and vehicle for vehicle |
| US20190376343A1 (en) * | 2018-06-08 | 2019-12-12 | Wing Enterprises, Incorporated | Ladders, top cap for ladders and trays for ladders |
| CN209980763U (en) * | 2019-04-18 | 2020-01-21 | 海伦钢琴股份有限公司 | Integrated triangular organ pedal mechanism |
-
2020
- 2020-04-17 CN CN202010305750.5A patent/CN111377036A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045775U (en) * | 1989-02-11 | 1989-10-11 | 李葵荣 | Ii type aluminium alloy all-purpose folding ladder |
| CN101498195A (en) * | 2008-12-25 | 2009-08-05 | 戴浩忠 | PMA aluminum split joint type portable ladder |
| CN204552585U (en) * | 2015-04-24 | 2015-08-12 | 长江三峡设备物资有限公司 | A kind of from bending extension ladder |
| CN206429178U (en) * | 2017-01-19 | 2017-08-22 | 李艳君 | A kind of spliced ladder of highway engineering |
| CN206681660U (en) * | 2017-02-07 | 2017-11-28 | 无锡市欣帆船舶设备有限公司 | A kind of aluminum retractable portable ladder |
| CN107842305A (en) * | 2017-11-22 | 2018-03-27 | 国网山东省电力公司曲阜市供电公司 | Maintaining platform ladder and maintaining platform ladder application method |
| CN208456481U (en) * | 2018-05-04 | 2019-02-01 | 南京林业大学 | A foldable and spliced ladder for electrical maintenance |
| US20190376343A1 (en) * | 2018-06-08 | 2019-12-12 | Wing Enterprises, Incorporated | Ladders, top cap for ladders and trays for ladders |
| CN208630587U (en) * | 2018-07-10 | 2019-03-22 | 北京汽车股份有限公司 | Pedal assembly and vehicle for vehicle |
| CN209980763U (en) * | 2019-04-18 | 2020-01-21 | 海伦钢琴股份有限公司 | Integrated triangular organ pedal mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113581386A (en) * | 2021-08-11 | 2021-11-02 | 上海外高桥造船有限公司 | Special-shaped vertical ladder for inclined bottom channel of cargo hold of ultra-large liquefied gas carrier and ship |
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Application publication date: 20200707 |