CN106351566A - Cabin climbing ladder - Google Patents
Cabin climbing ladder Download PDFInfo
- Publication number
- CN106351566A CN106351566A CN201611070531.3A CN201611070531A CN106351566A CN 106351566 A CN106351566 A CN 106351566A CN 201611070531 A CN201611070531 A CN 201611070531A CN 106351566 A CN106351566 A CN 106351566A
- Authority
- CN
- China
- Prior art keywords
- guardrail
- handle
- companion
- bearing
- way
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/02—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
- E06C7/18—Devices for preventing persons from falling
Abstract
The invention discloses a cabin climbing ladder, which comprises a ladder frame and two guardrails, wherein the two guardrails are arranged at the two sides of the ladder frame; a support seat is arranged on a side frame of the ladder frame; the guardrails are rotationally connected with the support seat; in addition, a rotating shaft extends in the length direction of the ladder frame; a locking device used for locking the guardrails in an unfolded state is arranged on the support seat. Through the arrangement of the guardrails on the cabin climbing ladder, the safety of the cabin climbing ladder can be improved; particularly when people climb in a high position such as the top of a square cabin or when people do field operation, the personnel safety of a user can be effectively ensured; in addition, the guardrails can rotate relative to the ladder frame, and are in a folded state in a transportation process, so that the occupied space is smaller; the transportation is convenient; when being used, the guardrails are in the unfolded state; the locking device is used for locking the positions of the guardrails, so that the use is convenient and reliable.
Description
Technical field
The present invention relates to technical field of safety protection equipment, step on companion-way particularly to one kind.
Background technology
Step on companion-way to be generally used for climbing up the higher place of shelter tip position and be used for field work.However, it is a kind of
Typically step in companion-way, step on the frame that companion-way only includes for foot-operated pedal and connects pedal, use in user and step on companion-way
During, user may drop from the both sides stepping on companion-way, and the personal safety of user cannot be effectively ensured.
Therefore, how to improve the safety stepping on companion-way, be the current technical issues that need to address of those skilled in the art.
Content of the invention
In view of this, it is an object of the invention to provide one kind steps on companion-way, safety is higher.
For achieving the above object, the following technical scheme of present invention offer:
One kind steps on companion-way, including ladder, also includes two guardrails located at described ladder both sides, on the frame of described ladder
Be provided with bearing, described guardrail be rotationally connected with described bearing and rotating shaft along described ladder length direction extend, on described bearing
It is provided with the lock for locking the described guardrail under deployed condition.
Preferably, described lock includes handle and sleeve, and described sleeve is fixed on described bearing, and the of described handle
One end is inserted in described sleeve and can sequentially pass through the spacing hole in the first end and described bearing of described sleeve, described
The first end of handss is provided with radial protrusion, is provided with return unit in described sleeve, and described return unit is located at the second end of described sleeve
Between end plate and described radial protrusion, described bearing is provided with limiting plate, and under described guardrail deployed condition, described return unit resets
Handle described in movement progress stretches out in described spacing hole, so that the first end of described handle and guardrail described in described spacing board clamping
Connecting portion with described bearing.
Preferably, the end face of described guardrail rotation is respectively the inner bottom wall of described bearing and the inwall of described limiting plate, institute
State the distance between the perisporium of handle and inner bottom wall of described bearing and be equal to the perisporium of described handle and the inwall of described limiting plate
The distance between.
Preferably, it is provided with bearing described at least two between each described guardrail and described ladder, on each described bearing
It is correspondingly provided with described lock.
Preferably, it is connected between the second end of all described handle that each described guardrail is correspondingly arranged for realizing connection
The dynamic connector controlling.
Preferably, described connecting portion includes the swivel that is fixed on described guardrail and is fixedly sheathed in described rotation and connects
The joint of head, described joint is connected to described bearing by described axis of rotation.
Preferably, described handle is l shape handle.
Preferably, described return unit is spring.
Preferably, described ladder includes pedal, and described pedal is provided with for anti-skidding anti-skidding lines.
Preferably, described guardrail is netted guardrail.
The companion-way of stepping on of present invention offer includes ladder, two guardrails located at ladder both sides, and the frame of ladder is provided with and props up
Seat, guardrail is rotationally connected with bearing and rotating shaft extends along the length direction of ladder, and bearing is provided with for locking under deployed condition
Guardrail lock.
This kind of step on the setting by guardrail for the companion-way, it is possible to increase step on the safety of companion-way, especially for climbing up shelter top
When the relatively higher position such as portion or field work, the personal safety of user can be effectively ensured；In addition, guardrail is permissible
Rotated with respect to ladder, in transportation, be in folded state, take up room less, be readily transported, use when at
In deployed condition, and lock is had to carry out position locking to guardrail, easy to use and reliable.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing providing obtains other accompanying drawings.
Fig. 1 is the specific embodiment stepping on companion-way provided by the present invention front view in a folded configuration；
Fig. 2 is the specific embodiment stepping on companion-way provided by the present invention side view in a folded configuration；
Fig. 3 is the specific embodiment stepping on companion-way provided by the present invention front view in the deployed state；
Fig. 4 is the specific embodiment stepping on companion-way provided by the present invention side view in the deployed state；
Fig. 5 is the specific embodiment stepping on companion-way provided by the present invention sectional view in the deployed state；
Fig. 6 is the specific embodiment stepping on companion-way provided by the present invention sectional view in a folded configuration；
Fig. 7 is the connection diagram figure of lock in the specific embodiment stepping on companion-way provided by the present invention；
Fig. 8 is the side view of pedal in the specific embodiment stepping on companion-way provided by the present invention；
Fig. 9 is the front view of pedal in the specific embodiment stepping on companion-way provided by the present invention；
Figure 10 is the side view of lock in the specific embodiment stepping on companion-way provided by the present invention；
Figure 11 is the side view of handle in the specific embodiment stepping on companion-way provided by the present invention；
Figure 12 is the side view of bearing in the specific embodiment stepping on companion-way provided by the present invention；
Figure 13 is the front view of bearing in the specific embodiment stepping on companion-way provided by the present invention；
Figure 14 is the top view of bearing in the specific embodiment stepping on companion-way provided by the present invention；
Figure 15 is the sectional view of the specific embodiment center tap stepping on companion-way provided by the present invention；
Figure 16 is the top view of the specific embodiment center tap stepping on companion-way provided by the present invention.
In Fig. 1 to Figure 16,1 is ladder, and 2 is guardrail, and 3 is bearing, and 4 is sleeve, and 5 is handle, and 6 is end plate, and 7 is to reset
Part, 8 is joint, and 9 is connector, and 10 is swivel, and 11 is hook, and 12 is pedal, and 13 is limiting plate, and 14 is radial protrusion,
15 is anti-skidding lines, and 16 is spacing hole.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
The core of the present invention is to provide one kind to step on companion-way, and safety is higher.
Refer to Fig. 1 to Figure 16, Fig. 1 and Fig. 2 is followed successively by the specific embodiment stepping on companion-way provided by the present invention in rugosity
Front view under state and side view；Fig. 3 and Fig. 4 is followed successively by the specific embodiment stepping on companion-way provided by the present invention in the deployed state
Front view and side view；Fig. 5 and Fig. 6 is followed successively by the specific embodiment stepping on companion-way provided by the present invention cuing open in the deployed state
View and sectional view in a folded configuration；Fig. 7 is the connection of lock in the specific embodiment stepping on companion-way provided by the present invention
Schematic diagram figure；Fig. 8 and Fig. 9 is followed successively by the side view of pedal and front view in the specific embodiment stepping on companion-way provided by the present invention；
Figure 10 is the side view of lock in the specific embodiment stepping on companion-way provided by the present invention；Figure 11 steps on companion-way for provided by the present invention
Specific embodiment in handle side view；Figure 12, Figure 13 and Figure 14 are followed successively by and provided by the present invention step on being embodied as of companion-way
The side view of bearing, front view and top view in example；Figure 15 and Figure 16 is followed successively by and provided by the present invention steps on being embodied as of companion-way
The sectional view of example center tap and top view.
In a kind of specific embodiment stepping on companion-way provided by the present invention, including ladder 1, also include being arranged on ladder 1 both sides
Two guardrails 2.The frame of ladder 1 is provided with bearing 3, and guardrail 2 is rotationally connected with bearing 3, and between guardrail 2 and bearing 3
Rotating shaft extends along the length direction of ladder 1, and guardrail 2 can be rotated toward and away from ladder 1, makes guardrail 2 relative
Launch in ladder 1 or fold.Bearing 3 is provided with lock, and lock can be used for locking the guardrail 2 under deployed condition.Wherein,
The length direction of ladder 1 refers to the direction that user is advanced on ladder 1.
It can be seen that, this kind of companion-way of stepping on is by the setting of guardrail 2, it is possible to increase step on the safety of companion-way, especially for climbing up
When the relatively higher position such as shelter top or field work, the personal safety of user can be effectively ensured；In addition, shield
Hurdle 2 can be rotated with respect to ladder 1, is in folded state in transportation, take up room less, be readily transported,
It is in deployed condition during use, and have lock to carry out position locking to guardrail 2, easy to use and reliable.
In above-described embodiment, locking implement body can include handle 5 and sleeve 4, and sleeve 4 is fixed on bearing 3, handle 5
First end be plugged in sleeve 4, and the first end of handle 5 can sequentially pass through spacing in the first end and bearing 3 of sleeve 4
Hole 16.The first end of handle 5 is provided with radial protrusion 14, is provided with return unit 7 in sleeve 4, and the second end of sleeve 4 is provided with end plate 6, multiple
Position part 7 is arranged between this end plate 6 and radial protrusion 14, and wherein, end plate 6 can be accomplished in several ways with sleeve 4 and be connected,
For example, end plate 6 can be correspondingly provided with, with sleeve 4, the screw thread being connected and be attached, or, can be by end plate 6 and set
It is correspondingly arranged screwed hole on cylinder 4 and be attached by screw.
The setting of return unit 7 can be with the relative position of control handle 5 and sleeve 4.When the second end of pull handle 5, footpath
Carry out being close to the motion at the second end of sleeve 4 to raised 14, return unit 7 produces restoring force, and the first end end of handle 5 is retracted to
First setting position, this first setting position does not hinder the guardrail 2 with respect to the freely rotatable of bearing 3 to be with the first end of handle 5
Standard, for example, handle 5 first end end can be completely retracting to inside sleeve 4；Unclamp the second end of handle 5, radial protrusion 14 exists
Carry out the motion at the second end away from sleeve 4, the first end end of handle 5 is stretched out spacing in the presence of the restoring force of return unit 7
Hole 16 to the second setting position, by the second end of handle 5, this second setting position can reliably stop that guardrail 2 rotates and be defined.
Limiting plate 13 is provided with bearing 3, in the state of guardrail 2 launches, return unit 7 carries out reseting movement, return unit 7
Handle 5 is promoted to stretch out spacing hole 16, the first end of handle 5 and limiting plate 13 can clamp the connection between guardrail 2 and bearing 3
Portion, locks to guardrail 2.I.e. limiting plate 13 and the cooperation of handle 5 lock to guardrail 2.Folded to guardrail 2
During, the second end of pull handle 5, the first end of handle 5 bounces back towards the direction at spacing hole 16 and sleeve 4 second end,
Enable guardrail 2 freely rotatable, guardrail 2 folds can send after putting in place and unclamps handle 5.
This kind of step in companion-way, by the cooperation of lock and limiting plate 13, be easy to processing and the manipulation of lock, and to shield
The restriction of the expanded position on hurdle 2 is reliable.
In above-described embodiment, the radial protrusion 14 of handle 5, can be by propping up when carrying out away from sleeve 4 second end motion
The lateral wall of seat 3 carries out axial limiting, thus stoping handle 5 from continuing to move towards spacing hole 16 direction, being easy to processing and installing,
And spacing reliability.In a kind of specific embodiment, end plate 6 detachable located at the second end of sleeve 4, during installation, can first by
In the first end insertion sleeve 4 of handss 5, wherein, the radial protrusion 14 of handle 5 can free in and out in the first end of sleeve 4, so
Afterwards, by return unit 7 in sleeve 4, then connect end plate 6 at the second end of sleeve 4, easy for installation.It is of course also possible to pass through
The first end setting retaining wall of sleeve 4, makes radial protrusion 14 be limited between the end plate 6 of sleeve 4 and this retaining wall, spacing reliability.
In each embodiment above-mentioned, spacing hole 16 can be adapted with the first end shape of handle 5, size, specifically permissible
Coordinate for small-gap suture, preferable to ensure handle 5 stability when mobile with respect to sleeve 4.
In each embodiment above-mentioned, the radial cross-sectional shape of spacing hole 16, the first end of handle 5 and sleeve 4 can be equal
For circle, it is easy to process, and be conducive to reducing friction.Certainly, the radial section of spacing hole 16, sleeve 4 and handle 5 first end
Shape can also be rectangle or other shapes.
In each embodiment above-mentioned, the end face of guardrail 2 rotation is respectively the inner bottom wall of bearing 3 and the inwall of limiting plate 13,
When i.e. guardrail 2 is folded to extreme position, guardrail 2 is contacted with the inner bottom wall of bearing 3 with the connecting portion of bearing 3, and guardrail 2 is expanded to
During extreme position, guardrail 2 is contacted with the inwall of limiting plate 13 with the connecting portion of bearing 3, and the perisporium of handle 5 is interior with bearing 3
The distance between diapire can be equal to the distance between the perisporium of handle 5 and the inwall of limiting plate 13.Due to launching in guardrail 2
When, the perisporium of the connecting portion of guardrail 2 downside is fixedly clamped by the perisporium of handle 5 with the inwall of limiting plate 13, and in guardrail 2
During folding, connecting portion between the perisporium of handle 5 and the inner bottom wall of bearing 3, by the inner bottom wall of the perisporium of handle 5 and bearing 3,
The distance between inwall of the perisporium of handle 5 and limiting plate 13 is set to identical it is ensured that when handle 5 folds, handle 5
Connecting portion can also be fixedly clamped with bearing 3 it is ensured that can be relatively stable when guardrail 2 folds place, be readily transported.
In each embodiment above-mentioned, at least two bearings 3 between each guardrail 2 and ladder 1, can be provided with, each bearing 3
On be correspondingly provided with lock, to ensure the positive lock of guardrail 2.Specifically, each guardrail 2 can be correspondingly arranged three bearings 3
And corresponding lock, specifically can be separately positioned on the length direction of ladder 1, and be located at respectively the two ends of guardrail 2 with
And the centre position of guardrail 2, lock and reliably simultaneously facilitate setting.Certainly, the quantity of bearing 3 selects not limited to this.
In each embodiment above-mentioned, between the second end of all handles 5 that each guardrail 2 is correspondingly arranged, use can be connected with
In the connector 9 realizing coordinated signals, the second end of each corresponding handle 5 of guardrail 2 is cascaded by connector 9.Its
In, connector 9 can be steel wire rope, and intensity is preferable with wearability, it is of course also possible to be nylon rope etc..By setting of connector 9
Put, can be at the second end pulling a handle 5, such as when being provided close to the second end of handle 5 that ground is arranged, located at same
Second end of the every other handle 5 of guardrail 2 is pulled simultaneously, is easy to control, can conveniently realize and same guardrail 2 is locked
Determine linkage of unlocking and the locking of device, realize stepping on quickly taking and folding and unfolding of companion-way.
Specifically, the second end of each handle 5 and each bearing 3 can be correspondingly arranged and pass through for connector 9
Through hole to realize the setting of connector 9.
In each embodiment above-mentioned, connecting portion can include the swivel 10 being fixed on guardrail 2 and be fixedly sheathed in
The joint 8 of swivel 10, joint 8 is connected to bearing 3 by axis of rotation, is easy to process, and carries out guardrail 2 by joint 8
With the connection of bearing 3, make guardrail 2 wear and tear larger position when rotating on joint 8, be conveniently replaceable and keep in repair, be conducive to prolonging
The service life of long guardrail 2.Certainly, connecting portion is alternatively the part with guardrail 2 one.
In each embodiment above-mentioned, bearing 3 specifically can be fixedly connected on ladder 1 by securing member, in order to keep in repair
With replacing, be conducive to extending the service life of ladder 1.Wherein, securing member is specifically as follows cup head self-plugging rivet.On bearing 3
Quantity for arranging the through hole of securing member can arrange multiple, and can be configured on the wall of multiple sides, to ensure to fix
Reliability.For example, it is possible to five through holes and four through holes are respectively provided with two perpendicular side walls.
In each embodiment above-mentioned, handle 5 can be l shape handle, be easy to operate, and the bending place of l shape handle can be used
In assist control l shape handle with respect to sleeve 4 position.Certainly, handle 5 can also be the handle of straight-bar handle or other shapes
Handss 5.
In each embodiment above-mentioned, return unit 7 is specifically as follows spring, is easily installed and chooses.Certainly, return unit 7
Can be Magnet or miscellaneous part.
In each embodiment above-mentioned, ladder 1 includes pedal 12, and pedal 12 is provided with for anti-skidding anti-skidding lines 15, with
It is easy to ensure the safety of user.Specifically, anti-skidding lines 15 can be formed by setting aligned transfer by multiple circular protrusions.
In each embodiment above-mentioned, guardrail 2 can be netted guardrail, is conducive to saving material while realizing safeguard function
Material and mitigate weight, for example, guardrail 2 rod member of v shape by framework and in framework can form triangular mesh.Wherein,
The framework of two guardrails 2 can be ladder-shaped frame, and the upper bottom side of the framework of a guardrail 2 is connected with ladder 1, another shield
The lower bottom side of the framework on hurdle 2 is connected with ladder 1, and two guardrails 2 not exclusively overlap when stacking, and are easy to when carrying out expansion action
Distinguish two guardrails 2.
In each embodiment above-mentioned, the top of ladder 1 is provided with the hook 11 for being reliably connected with nacelle, specifically permissible
For two, can safely and reliably use in order to ladder 1.
In another kind of specific embodiment, lock can also be the lockset such as mechanical lock, electronic lock, by the key in lockset
Locking and the unblock of guardrail 2 realized by spoon or electronic lock etc..
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Above companion-way of stepping on provided by the present invention is described in detail.Specific case used herein is to the present invention
Principle and embodiment be set forth, the explanation of above example is only intended to help and understands the method for the present invention and its core
Thought is thought.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention,
The present invention can also be carried out with some improvement and modify, these improve and modify the protection domain also falling into the claims in the present invention
Interior.
Claims (10)
1. one kind steps on companion-way, including ladder (1) it is characterised in that also including two guardrails located at described ladder (1) both sides
(2), the frame of described ladder (1) is provided with bearing (3), and described guardrail (2) is rotationally connected with described bearing (3) and rotating shaft is along institute
The length direction stating ladder (1) extends, and described bearing (3) is provided with the lock for locking the described guardrail (2) under deployed condition
Determine device.
2. according to claim 1 step on companion-way it is characterised in that described lock includes handle (5) and sleeve (4), institute
State sleeve (4) to be fixed on described bearing (3), the first end of described handle (5) is inserted in described sleeve (4) and can be successively
Run through the spacing hole (16) in the first end and described bearing (3) of described sleeve (4), the first end of described handle (5) is provided with footpath
To raised (14), it is provided with return unit (7) in described sleeve (4), described return unit (7) is located at the second end of described sleeve (4)
Between end plate (6) and described radial protrusion (14), described bearing (3) is provided with limiting plate (13), described guardrail (2) deployed condition
Under, described return unit (7) reseting movement promotes described handle (5) to stretch out in described spacing hole (16), so that described handle (5)
First end clamps the connecting portion of described guardrail (2) and described bearing with described limiting plate (13).
3. according to claim 2 step on companion-way it is characterised in that the end face that rotates of described guardrail (2) is respectively described
The seat inner bottom wall of (3) and the inwall of described limiting plate (13), the inner bottom wall of the perisporium of described handle (5) and described bearing (3) it
Between distance be equal to the distance between inwall of perisporium and described limiting plate (13) of described handle (5).
4. according to Claims 2 or 3 step on companion-way it is characterised in that each described guardrail (2) and described ladder (1) it
Between be provided with bearing described at least two (3), each described bearing (3) is correspondingly provided with described lock.
5. according to claim 4 step on companion-way it is characterised in that each described guardrail (2) be correspondingly arranged all described
It is connected with the connector for realizing coordinated signals between second end of handle (5).
6. according to claim 5 step on companion-way it is characterised in that described connecting portion includes being fixed on described guardrail (2)
Swivel (10) and the joint (8) being fixedly sheathed in described swivel (10), described joint (8) turned by described rotating shaft
It is dynamically connected in described bearing (3).
7. according to claim 6 step on companion-way it is characterised in that described handle (5) be l shape handle.
8. according to claim 7 step on companion-way it is characterised in that described return unit (7) be spring.
9. according to claim 8 step on companion-way it is characterised in that described ladder (1) include pedal (12), described pedal
(12) it is provided with for anti-skidding anti-skidding lines (15).
10. according to claim 9 step on companion-way it is characterised in that described guardrail (2) be netted guardrail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611070531.3A CN106351566B (en) | 2016-11-28 | 2016-11-28 | Step on companion-way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611070531.3A CN106351566B (en) | 2016-11-28 | 2016-11-28 | Step on companion-way |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106351566A true CN106351566A (en) | 2017-01-25 |
| CN106351566B CN106351566B (en) | 2018-02-27 |
Family
ID=57862497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611070531.3A Active CN106351566B (en) | 2016-11-28 | 2016-11-28 | Step on companion-way |
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| Country | Link |
|---|---|
| CN (1) | CN106351566B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10159288A (en) * | 1996-11-28 | 1998-06-16 | Yasuhiro Uehara | Ladder with treadboard adjustable in association with variation in suspension inclination |
| CN201460702U (en) * | 2009-08-19 | 2010-05-12 | 株洲九方装备模具实业有限公司 | Evacuation door ladder |
| FR2973827A1 (en) * | 2011-04-05 | 2012-10-12 | Fournier Daforib | Movable safety staircase for use as ladder to access e.g. upper floor by user, has hinge fittings arranged at corners of guardrails, so that guardrails are movable between folded and utilization positions in plane perpendicular to steps |
| CN205370431U (en) * | 2016-02-03 | 2016-07-06 | 青岛港湾职业技术学院 | Motor -driven gangway ladder |
| CN206309269U (en) * | 2016-11-28 | 2017-07-07 | 零八一电子集团四川红轮机械有限公司 | Step on companion-way |
-
2016
- 2016-11-28 CN CN201611070531.3A patent/CN106351566B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10159288A (en) * | 1996-11-28 | 1998-06-16 | Yasuhiro Uehara | Ladder with treadboard adjustable in association with variation in suspension inclination |
| CN201460702U (en) * | 2009-08-19 | 2010-05-12 | 株洲九方装备模具实业有限公司 | Evacuation door ladder |
| FR2973827A1 (en) * | 2011-04-05 | 2012-10-12 | Fournier Daforib | Movable safety staircase for use as ladder to access e.g. upper floor by user, has hinge fittings arranged at corners of guardrails, so that guardrails are movable between folded and utilization positions in plane perpendicular to steps |
| CN205370431U (en) * | 2016-02-03 | 2016-07-06 | 青岛港湾职业技术学院 | Motor -driven gangway ladder |
| CN206309269U (en) * | 2016-11-28 | 2017-07-07 | 零八一电子集团四川红轮机械有限公司 | Step on companion-way |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106351566B (en) | 2018-02-27 |
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