CN106494638A - Safe locking device and its system for connecting bridge or the cabin of plugging into of boarding bridge - Google Patents
Safe locking device and its system for connecting bridge or the cabin of plugging into of boarding bridge Download PDFInfo
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- CN106494638A CN106494638A CN201510564516.3A CN201510564516A CN106494638A CN 106494638 A CN106494638 A CN 106494638A CN 201510564516 A CN201510564516 A CN 201510564516A CN 106494638 A CN106494638 A CN 106494638A
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- Prior art keywords
- safe locking
- locking device
- cabin
- plugging
- hydraulic cylinder
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Abstract
The invention discloses a kind of for connecting bridge or the safe locking device in the cabin of plugging into of boarding bridge, it is characterised in that one end of the safe locking device is connected to plugs on cabin, and its other end is connected on Boarding bridge access；The safe locking device includes at least one hydraulic cylinder, is provided with oil path block and the shunt valve for connecting the hydraulic cylinder and the oil path block on the shell of the hydraulic cylinder；At least one 2/2-way magnetic valve is arranged on the oil path block so that when the 2/2-way magnetic valve is opened, two hydraulic cavities (A, B) of the hydraulic cylinder are interconnected by the conducting of shunt valve.Additionally, present invention also offers a kind of for connecting bridge or the safe locking system in the cabin of plugging into of boarding bridge, plug into the safe locking device in cabin including being previously used for connecting bridge.
Description
Technical field
The present invention relates to a kind of braking scheme of the cabin/front edge of airport pickup port of plugging into of connecting bridge or boarding bridge, especially
Which is related to a kind of for connecting bridge or the safe locking device in the cabin of plugging into of boarding bridge, and has
The cabin safe locking system of plugging into of the safe locking device.
Technical background
Currently, the plug into transmission in cabin of connecting bridge substantially realized by flexible chain, should
Kind of drive simple structure, requires to assembly precision also not high.But, due to front edge of airport pickup port direct
Dock with aircraft door, and itself have again two tons multiple, once chain breakage is to passenger and aircraft
All there is the potential safety hazard of high risk, in addition to the accident of chain rupture happens occasionally, such as idle pulley
Axle, or even the output shaft generation fracture of reducing motor is for passenger, aircraft and repair and maintenance personnel
Major safety risks can be caused.
In order to overcome aforementioned drawback, it has been proposed that including increasing the modes such as chain model, for example
Increase chain model twice, but this is still not enough to fundamentally be avoided such hidden danger；Additionally, this
Applicant it is also proposed floating friction catch scheme and applied entitled " a kind of with chain rupture protection
Patent (the patent No. of connecting bridge "：CN201020103701.5), the equipment utilization frictional force limit
The mutual motion between part is made or prevents, which is also present while certain safe effect is obtained
Have the shortcomings that during braking that noise and cost are also of a relatively high.
The problems such as aforementioned chain rupture for occurring for connecting bridge in use, airport both domestic and external
Also have begun to be distinctly claimed in the design of platform rotating driving device that picks from security standpoint
In should be taken into account damage that the catastrophic failure of associated actuator part may bring to aircraft, or even set
Vertical new standard is with clear and definite related request.
For this purpose, the safe locking device that a kind of new connecting bridge plugs into cabin/front edge of airport pickup port is urgently provided,
Meet aircraft and related personnel for connecting bridge plug into cabin secure context high requirement same
When, overcome braking in prior art to have noise, braking brake pad destruction application and high cost
Shortcoming.
Content of the invention
The purpose of the present invention is aiming at the safety problem of boarding bridge joint, there is provided a kind of new
Locking device, have simple structure easily operated while the high security requirement for meeting airport
The advantages of.
For reaching above-mentioned purpose, a preferred embodiment of the present invention provides one kind to be used for stepping on
The safe locking device in cabin refuted by machine bridge joint.One end of the safe locking device is connected to cabin of plugging into
On, its other end is connected on Boarding bridge access；The safe locking device includes at least one
Hydraulic cylinder, is provided with oil path block and is used for connecting the hydraulic cylinder on the shell of the hydraulic cylinder
Shunt valve with the oil path block；At least one 2/2-way magnetic valve is arranged on the oil circuit
On block so that when the 2/2-way magnetic valve is opened the hydraulic cylinder two hydraulic cavities (A,
B) it is interconnected by the conducting of shunt valve.
Further, the safe locking device also includes admission extinguisher, itself and the hydraulic cylinder
Shell is connected for the piston rod of containing section；Breather plug is provided with the admission extinguisher, is used
The steady of air pressure in the admission extinguisher is kept when in the piston rod stretching motion.
Further, the hydraulic cylinder also includes being coaxial therewith setting, position piston in the inner
Bar and it is arranged on the piston rod and is used for separating the sealing ring of the hydraulic cavities (A, B).
Further, the hydraulic cylinder also includes the first black box for being coaxial therewith arranging, and uses
In sealing the end of the hydraulic cylinder near the cabin of plugging into.
Further, the hydraulic cylinder also includes the second black box, and which is by being co-axially located at
State the connecting portion between hydraulic cylinder and the admission extinguisher.
Further, first seal member includes that guide pin bushing, guide pin bushing sealing ring, piston rod are close
Envelope, anti-dust seal and drive end bearing bracket；And second seal member includes that rear guide pin bushing, guide pin bushing are close
Seal, piston rod packing and anti-dust seal.
Further, the two ends of the safe locking device are respectively by earrings and the cabin of plugging into
It is hinged with passage.
Further, the snap ring and oscillating bearing for connection fastening is provided with the earrings.
According to provided by the present invention for connecting bridge plug into cabin safe locking device another preferably
Embodiment, the safe locking device are arranged on the bilge portion that plugs into, and which includes electromagnet, braking
Pin and spring；After the electromagnet power-off, the banking pin is embedded under spring force
In the steel band with holes for braking formed by Channel front end L-type steel.
On the other hand, present invention also offers a kind of safe locking system in cabin of plugging into for connecting bridge
System.The safe locking system includes any one safe locking device aforementioned；Preferably, institute
Stating safe locking system includes cabin driving malfunction detection means of plugging into.
Further, there is the failures such as fracture in chain in the cabin driving malfunction detection means of plugging into
When, the fixed screw of the spring force drive chain of disk spring will be moved rearwards by, intrinsic bullet
The elastic force of spring causes tablet to separate with the body of the failure detector, the biography on the body
Sensor triggering brake signal starts brake operating.
The connecting bridge that the present invention is provided plug into cabin safe locking device and its system architecture simple, into
This is with the obvious advantage, can also be efficiently against existing friction while connecting bridge safe operation is ensured
Formula locking device has noise and is easily destroyed the problem of application when braking, and can be widely applied to current
On the connecting bridge or boarding bridge of various types.
Description of the drawings
Fig. 1 shows showing for the connecting bridge with cabin safe locking system of plugging into of present invention offer
It is intended to；
Fig. 2 shows the schematic diagram of the cabin safe locking system of plugging into along the H directions shown in Fig. 1；
Fig. 3 shows a kind of schematic diagram of the cabin safe locking device of plugging into provided according to the present invention；
Fig. 4 shows the fundamental diagram of cabin safe locking device of plugging into shown in Fig. 3；
Fig. 5 shows the working effect figure of the cabin safe locking device of plugging into shown in Fig. 3；
Fig. 6 shows the explosive view of the cabin safe locking device of plugging into shown in Fig. 3；
Fig. 7 shows the signal of cabin safe locking device of plugging into according to the another kind of present invention offer
Figure；
Fig. 8 shows the signal of cabin safe locking system of plugging into according to the connecting bridge of present invention offer
Figure；
Fig. 9 shows the assembling schematic diagram in the F regions shown in Fig. 8；And
Figure 10 shows the schematic diagram of the failure detector in the G regions shown in Fig. 8.
Specific embodiment
Exemplary embodiments of the present invention are elaborated below in conjunction with accompanying drawing.In order to clear and
For the sake of briefly, actual embodiment is not limited to these technical characteristics described in this description.
It should be noted that being improved to any one practical embodiments, during modification,
For realizing a certain specific target, the improvement, the process of modification are probably extremely complex and time-consuming
, but this remains conventional skill for those skilled in the art of benefit of the present invention are known
Art means.The present embodiment is implemented under premised on technical solution of the present invention, gives in detail
Thin embodiment and process, but protection scope of the present invention includes but are not limited to following realities
Apply example.
Fig. 1 shows showing for the connecting bridge with cabin safe locking system of plugging into of present invention offer
It is intended to.The connecting bridge is to be provided with plugging into for present invention offer in the bottom of conventional connecting bridge
Cabin safe locking system 10, other parts are for example plugged into cabin 11, drive system 12, rotation platform
13rd, support post 14 and three-level passage 15a-15c can adopt portion well known in the prior art
Part, will not be described here.Fig. 2 particularly illustrates the cabin peace of plugging into along the H directions shown in Fig. 1
The schematic diagram of full fastening system.The cabin safe locking system of plugging into is arranged on passage with cabin of plugging into
Between chassis under, the one end for plugging into cabin safe locking system is connected to plugs on cabin, another
End is connected on Boarding bridge access；According to a preferred embodiment of the present invention, the cabin of plugging into
Safe locking system is using the connected mode being hinged.
Specifically, the cabin safe locking system of plugging into that the present invention is provided includes cabin safety lock of plugging into
Tight device, which can only have the principle of a gyroaxis using circumference rotary motion, with cabin of plugging into
The one end being hinged is provided with a hydraulic cylinder, and by the piston rod of hydraulic cylinder and the cabin company that plugs into
Connect, its other end is then hinged on Boarding bridge access by admission extinguisher.
Fig. 3 shows a kind of schematic diagram of the cabin safe locking device of plugging into provided according to the present invention.
As shown in figure 3, this is plugged into, cabin safe locking device adopts passive oil cylinder type, including hydraulic cylinder 31
With shunt valve 32.The passive oil cylinder type plug into cabin safe locking device fundamental diagram and work
Make design sketch to be illustrated in figures 4 and 5 respectively.
As shown in figure 4, this is plugged into, cabin safe locking device is mainly using 2/2-way magnetic valve
Break-make realizes the conducting and closing of hydraulic cylinder fluid path, so as to allow or brake plugging into of being attached thereto
Cabin.Specifically, plug into cabin rotate when, two two-way electromagnetic valves be in powered open state,
Hydraulic fluid port 1 is communicated with hydraulic fluid port 2, then on the right of hydraulic cylinder piston, A chambeies and piston left side B chambeies communicate,
That is side oil pocket oil-feed, opposite side are fuel-displaced by equivalent, thus plug into cabin rotate when, hydraulic cylinder with
The change of the cabin angle of plugging into can freely be stretched or be shortened.
As it can be seen in figures 5 and 6, the safe locking device include at least one hydraulic cylinder 31 and with
The admission extinguisher 47 that the hydraulic cylinder sealing coordinates, is provided with oil path block 33 on the shell of the hydraulic cylinder
With shunt valve 32, at least one 2/2-way magnetic valve 34 is arranged on the oil path block；Institute
State shunt valve 32 and be respectively used to connect the oil path block 33 with 31 corresponding hydraulic pressure of the hydraulic cylinder
Chamber so that two hydraulic cavities (A, B) of the hydraulic cylinder when 2/2-way magnetic valve 34 is opened
It is interconnected by the conducting of two shunt valves 32.
In a preferred embodiment of the invention, the 2/2-way magnetic valve can be adopted
Magnetic valve under DCF08-22-3-NC series, those skilled in the art can specifically should according to which
Needs and further choose the concrete model under the series and connect with meeting number of coils, coil
Head, valve body etc. are required.
When observing that during connecting bridge is operated cabin motion of plugging into is abnormal, by making manipulation
Bar reset to zero, 34 power-off of magnetic valve and block the path between hydraulic fluid port 1 and hydraulic fluid port 2, thus
At once two hydraulic cavities of A, B of sealing fluid cylinder pressure 31, the hydraulic cylinder 31 are lockable, therefore
Cabin of plugging into is braked.There is the connecting bridge of the cabin safe locking device of plugging into provided according to the present invention,
Its chain only when cabin rotation is plugged in operation, just bear by (magnetic valve is in energization conducting state)
Compared with big load；After connecting bridge is in holding state or plugs in place, the magnetic valve is in disconnected
Electricity condition, cabin of plugging into are in the lock state, and chain is not subject to service load, so as to be conducive to improving
The service life of chain.
As shown in fig. 6, the admission extinguisher 47 of the safe locking device is outer with the hydraulic cylinder 31
Shell is connected for the piston rod 35 of containing section；Preferably, bullet is preferably provided with using screw 49
The shell of the admission extinguisher 47 and hydraulic cylinder 31 is fixed together by the mode of spring packing ring 50.Described
Breather plug 48 is provided with admission extinguisher 47, for keeping in 35 stretching motion of piston rod
In the admission extinguisher 47, air pressure is steady.
The piston rod 35 being coaxial therewith is provided with the hydraulic cylinder 31 of the safe locking device, and
Being arranged on the piston rod is used for the sealing ring 36 for separating the hydraulic cavities (A, B).Described
The both sides of hydraulic cylinder are respectively arranged with black box, specifically, in the hydraulic cylinder near plugging into
The one end in cabin has been coaxially disposed the first black box, for sealing the hydraulic cylinder near described
Plug into the end in cabin.First seal member can include but is not limited to guide pin bushing 37, guide pin bushing successively
Sealing ring 38, piston rod packing 39, anti-dust seal 40 and drive end bearing bracket 41.In the hydraulic cylinder
Second black box of 31 ends being connected with admission extinguisher 47 is disposed coaxially the liquid
In connecting portion between cylinder pressure 31 and the admission extinguisher 47, second seal member is included but not
It is limited to rear guide pin bushing 42, guide pin bushing sealing ring 38, piston rod packing 39 and anti-dust seal 40.
In order to be further ensured that the sealing property of the hydraulic cylinder, trip bolt 51 can be set and be used for
Fix drive end bearing bracket 41 to compress aforementioned first black box.The cabin safety lock of plugging into that the present invention is provided
Tight device, its two ends plug into cabin and passage is hinged by earrings 43 with described respectively, in the ear
The snap ring 46 and oscillating bearing 45 for connection fastening is provided with ring.
Another embodiment party of the cabin safe locking device of plugging into provided according to the present invention shown in Fig. 7
Formula.Steel with holes is provided with the arc surface formed by the front end L-type steel of the passage of the connecting bridge
Band 70, plugging into, bilge portion correspondingly arranges safe locking device, the safe locking device by
Support member 71 is supported fixes.The safe locking device includes electromagnet 72, banking pin 73 and spring；
After 72 power-off of the electromagnet, described in Spring driving, banking pin 73 is moved towards steel band with holes 70,
And it is embedded into realization braking purpose in the steel band with holes under spring force.In view of the braking
Mechanism's distance plug into cabin pivot farther out, its stress is also relatively small, and this is plugged into
The structure of cabin safety locking mechanism is compacter.
Fig. 8 shows the assembling of cabin safe locking system of plugging into according to the connecting bridge of present invention offer
Schematic diagram.Fig. 9 enlargedly shows the assembling schematic diagram in the F regions shown in Fig. 8, and which adopts
Screw 90 and pressing plate 91 from bottom, specifically, screw be each passed through the snap ring in earrings and
Cabin safe locking system of plugging into is fixed on the passage of connecting bridge and the bilge portion that plugs into by oscillating bearing.
Another aspect provides a kind of safe locking system in cabin of plugging into for connecting bridge
System, the safe locking system can have aforementioned two kinds plug in the safe locking device of cabin any
A kind of.Preferably, the cabin safe locking system of plugging into can also arrange driving malfunction detection means,
Such as chain monitoring apparatus.
Figure 10 shows the schematic diagram of the failure detector in the G regions shown in Fig. 8.As schemed
Shown in 10, when chain occurs the failures such as fracture, under the spring-force driven dual of disk spring 97,
The fixed screw 94 of chain will be moved rearwards by.The tablet 93 arranged in chain monitoring apparatus
Body 96 of the meeting in the presence of spring 95 (rubber spring can be used) with the chain monitoring apparatus
Separate, thus, (for example inductance type is sensed the sensor 92 on the body of the chain monitoring apparatus
Device) brake signal startup brake operating will be sent.In this scenario, due to right in operating process
Chain can carry out monitoring automatically in real time, once occur abnormal, so that it may before people perceives at once
It is braked, so as to further increasing the security performance of connecting bridge.
Plug into cabin safe locking device and its system architecture of the connecting bridge that the present invention is provided is simple, easily
In assembling, can effectively reduce the potential risk of chain breakage, braking is reliable, but also overcomes
Existing friction type brake scheme has the shortcomings that noise, braking brake pad can destroy application when braking,
Fully ensured aircraft plug into and related personnel safety.
Although based on preferred embodiment to the present invention have been described in detail, this area skill
Art personnel should know that the scope that the present invention is claimed is not limited to the preferred embodiment.
In the case of the spirit and purport without departing from the present invention, one of ordinary skill in the art is resonable
Variations and modifications can be carried out to embodiment on the basis of the solution present invention, and therefore be fallen into
In present invention protection domain defined in the appended claims.
Claims (11)
1. a kind of for connecting bridge or the safe locking device in the cabin of plugging into of boarding bridge, its feature exists
In one end of the safe locking device is connected to plugs on cabin, and its other end is connected to boarding
On bridge passage；The safe locking device includes at least one hydraulic cylinder, outside the hydraulic cylinder
Oil path block and the shunt valve for connecting the hydraulic cylinder and the oil path block is provided with shell；
At least one 2/2-way magnetic valve is arranged on the oil path block so that the 2/2-way
When magnetic valve is opened, two hydraulic cavities (A, B) of the hydraulic cylinder are by the conducting of shunt valve
It is interconnected.
2. safe locking device according to claim 1, it is characterised in that the safety
Locking device also includes admission extinguisher, and which is connected for containing section with the shell of the hydraulic cylinder
Piston rod；Breather plug is provided with the admission extinguisher, in the piston rod stretching motion
When keep the steady of air pressure in the admission extinguisher.
3. safe locking device according to claim 1, it is characterised in that the hydraulic pressure
Cylinder also includes being coaxial therewith arrange, position piston rod in the inner and is arranged on the piston rod
The upper sealing ring for being used for separating the hydraulic cavities (A, B).
4. safe locking device according to claim 3, it is characterised in that the hydraulic pressure
Cylinder also includes the first black box for being coaxial therewith arranging, for sealing the hydraulic cylinder near institute
State the end in cabin of plugging into.
5. safe locking device according to claim 3, it is characterised in that the hydraulic pressure
Cylinder also includes the second black box, its be co-axially located at the hydraulic cylinder and the admission extinguisher it
Between connecting portion.
6. the safe locking device according to claim 4 or 5, it is characterised in that described
First seal member includes guide pin bushing, guide pin bushing sealing ring, piston rod packing, anti-dust seal and front end
Lid；And second seal member include rear guide pin bushing, guide pin bushing sealing ring, piston rod packing and
Anti-dust seal.
7. safe locking device according to claim 1, it is characterised in that the safety
Cabin is plugged into and passage is hinged with described by earrings respectively in the two ends of locking device.
8. safe locking device according to claim 7, it is characterised in that the earrings
Snap ring and oscillating bearing for connection fastening is inside provided with.
9. a kind of for connecting bridge or the safe locking device in the cabin of plugging into of boarding bridge, its feature exists
In, the safe locking device is arranged on the bilge portion that plugs into, it include electromagnet, banking pin and
Spring；After the electromagnet power-off, the banking pin is embedded under spring force by leading to
In the steel band with holes for braking that road front end L-type steel is formed.
10. a kind of for connecting bridge or the safe locking system in the cabin of plugging into of boarding bridge, its feature
It is, the safe locking system includes the safe locking described in aforementioned any one claim
Device；Preferably, the safe locking system includes cabin driving malfunction detection means of plugging into.
11. safe locking systems according to claim 10, it is characterised in that described connect
Cabin driving malfunction detection means is refuted when chain occurs the failures such as fracture, the spring force of disk spring
The fixed screw of drive chain will be moved rearwards by, the elastic force of intrinsic spring cause tablet with
The body of the failure detector is separated, and the sensor-triggered brake signal on the body starts
Brake operating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510564516.3A CN106494638B (en) | 2015-09-06 | 2015-09-06 | Safety locking device for connection cabin of boarding bridge or boarding bridge and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510564516.3A CN106494638B (en) | 2015-09-06 | 2015-09-06 | Safety locking device for connection cabin of boarding bridge or boarding bridge and system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106494638A true CN106494638A (en) | 2017-03-15 |
| CN106494638B CN106494638B (en) | 2020-05-22 |
Family
ID=58286632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510564516.3A Active CN106494638B (en) | 2015-09-06 | 2015-09-06 | Safety locking device for connection cabin of boarding bridge or boarding bridge and system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106494638B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107082124A (en) * | 2017-06-14 | 2017-08-22 | 电子科技大学 | Space suit hip joint |
| EP4230892A1 (en) * | 2022-02-21 | 2023-08-23 | BKM Stahl- und Anlagenbau GmbH | Boarding bridge |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6212724B1 (en) * | 1998-06-30 | 2001-04-10 | Yuanda Zhou | Passenger boarding bridge for narrow body aircraft |
| CN102991693A (en) * | 2012-10-16 | 2013-03-27 | 蒂森克虏伯机场系统(中山)有限公司 | Double-chain driving device of boarding bridge arrival gate |
| CN202966674U (en) * | 2012-11-02 | 2013-06-05 | 西安鸿顺机场设备有限公司 | Integral automatic leveling device |
| CN203687796U (en) * | 2014-01-06 | 2014-07-02 | 中国神华能源股份有限公司 | Safety locking device of explosive material mixing loading vehicle |
| US20140326546A1 (en) * | 2013-05-06 | 2014-11-06 | Thyssenkrupp Airport Systems, S.A. | Stopping system for a cab of boarding bridges for accessing aircraft and ships |
| CN204415745U (en) * | 2015-01-16 | 2015-06-24 | 深圳中集天达空港设备有限公司 | Front edge of airport pickup port fork type self-locking device and connecting bridge |
| CN204415746U (en) * | 2015-01-22 | 2015-06-24 | 深圳中集天达空港设备有限公司 | Connecting bridge, front edge of airport pickup port and self-locking device thereof |
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2015
- 2015-09-06 CN CN201510564516.3A patent/CN106494638B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6212724B1 (en) * | 1998-06-30 | 2001-04-10 | Yuanda Zhou | Passenger boarding bridge for narrow body aircraft |
| CN102991693A (en) * | 2012-10-16 | 2013-03-27 | 蒂森克虏伯机场系统(中山)有限公司 | Double-chain driving device of boarding bridge arrival gate |
| CN202966674U (en) * | 2012-11-02 | 2013-06-05 | 西安鸿顺机场设备有限公司 | Integral automatic leveling device |
| US20140326546A1 (en) * | 2013-05-06 | 2014-11-06 | Thyssenkrupp Airport Systems, S.A. | Stopping system for a cab of boarding bridges for accessing aircraft and ships |
| CN203687796U (en) * | 2014-01-06 | 2014-07-02 | 中国神华能源股份有限公司 | Safety locking device of explosive material mixing loading vehicle |
| CN204415745U (en) * | 2015-01-16 | 2015-06-24 | 深圳中集天达空港设备有限公司 | Front edge of airport pickup port fork type self-locking device and connecting bridge |
| CN204415746U (en) * | 2015-01-22 | 2015-06-24 | 深圳中集天达空港设备有限公司 | Connecting bridge, front edge of airport pickup port and self-locking device thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107082124A (en) * | 2017-06-14 | 2017-08-22 | 电子科技大学 | Space suit hip joint |
| CN107082124B (en) * | 2017-06-14 | 2021-04-06 | 电子科技大学 | Aerospace suit hip joint |
| EP4230892A1 (en) * | 2022-02-21 | 2023-08-23 | BKM Stahl- und Anlagenbau GmbH | Boarding bridge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106494638B (en) | 2020-05-22 |
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