CN109138739A - A kind of peculiar to vessel detachable or hiding doorsill structure - Google Patents
A kind of peculiar to vessel detachable or hiding doorsill structure Download PDFInfo
- Publication number
- CN109138739A CN109138739A CN201810980509.5A CN201810980509A CN109138739A CN 109138739 A CN109138739 A CN 109138739A CN 201810980509 A CN201810980509 A CN 201810980509A CN 109138739 A CN109138739 A CN 109138739A
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- China
- Prior art keywords
- threshold
- hiding
- doorframe
- peculiar
- doorframe column
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Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/70—Sills; Thresholds
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/70—Sills; Thresholds
- E06B2001/707—Thresholds with special provision for insulation
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Catching Or Destruction (AREA)
Abstract
The invention discloses a kind of peculiar to vessel detachable or hiding doorsill structures, including doorframe, threshold, the left end of the threshold and right end are matched with the doorframe column of left and right side respectively, the threshold is the U-shaped or strip of bottom surface level, and the doorsill structure further includes lifting structure or overturning structure or inflatable structure.Threshold bottom surface of the invention is horizontal, in conjunction with doorframe column, keeps doorframe structure safe and secure, and threshold and ground seal, and can reduce wave influence;Threshold has the function of detachable or hiding, and when cargo is current threshold lifting can hide or overturning, access door threshold position and ground level is made to be in same plane, it can be connected to without barrier, threshold positioning limiting fixator is set, prevents threshold from sliding, influences the safety of discrepancy personnel, cargo.
Description
Technical field
The present invention relates to the technical fields of threshold, and in particular to a kind of for the peculiar to vessel detachable of 18600 tons of chemical tankers
Or hiding doorsill structure.
Background technique
Currently, can build port and starboard at antetheca upper usually on ship two fan steel doors are respectively arranged, as cargo area and Shang Jianju
The isolating door of settlement, this can effectively reduce the upper wave influence for building region in navigation, in wharf anchors, also can be used as and answer
The isolating door of anxious escape plan is prevented and is reduced and builds region in unauthorized personnel's disengaging.
The doorframe of isolating door is usually all round closure, i.e. there are edge in upper and lower, left and right, after installing, following side
Edge is above ground level, referred to as threshold.Sometimes, when need to build from above region Transporting equipment etc. enter freight house region when, threshold at
For obstacle.If should not threshold, isolating door in switch may scrape along the ground, and can be had the gap under door, lack one
The safety of the fixation at edge, door is also affected.So the isolating door doorframe structure of current fixation threshold is when in use
It brings some inconvenience to user.
Summary of the invention
It is an object of the present invention to overcome defect existing in the prior art, provide a kind of for 18600 tons of chemical tankers
Peculiar to vessel detachable or hiding doorsill structure, structure is simple, it is easy to use, freight house can be made and above build the ground in region without barrier
Hinder connection, does not influence the safety and stability of original isolating door.
To achieve the above object, the doorsill structure peculiar to vessel detachable or hiding the technical scheme is to design one kind,
Including doorframe, threshold, the left end of the threshold and right end are matched with the doorframe column of left and right side respectively, and the threshold is
The U-shaped or strip of bottom surface level, the doorsill structure further include lifting structure or overturning structure or inflatable structure.Threshold bottom surface
Level keeps doorframe structure safe and secure in conjunction with doorframe column, and threshold and ground seal, and can reduce wave influence;Threshold tool
There is detachable or hiding function, threshold lifting can be made to hide or overturn when cargo is current, make access door threshold position and ground
Plane is in same plane, can be connected to without barrier.
Preferred technical solution is, the lifting structure include can make threshold sliding opposite with doorframe column sliding slot and
Locating part.The threshold disassembled can be slid by sliding slot at the top of doorframe, and by the fixed function of locating part, avoids threshold
Slide, influence the current safety of cargo or personnel with conveniently.
Further preferred technical solution is, the sliding slot setting is at threshold both ends and the doorframe column is plugged in threshold
In the sliding slot on top or the sliding slot is arranged in the opposite side surface of doorframe column and the threshold end and is plugged in doorframe column
In the sliding slot of side surface, the locating part is the combination of 2 groups of limit inserted links and pin hole, and the pin hole is separately positioned on doorframe column
On, the limit inserted link runs through a side of the sliding slot.
Preferred technical solution is that the lifting structure includes that at least two springs and plane of the opening are flushed with ground level
Groove, the groove can be such that the threshold bottom is vertically embedded into, and the depth of the groove is not less than the height on the threshold bottom edge
Degree, the threshold bottom is Chong Die with the groove part, and the spring is fixedly connected with the both ends of threshold.When cart transports goods
When passing through threshold, cargo self weight or current personnel's foot, which are stepped on, can be such that threshold declines by spring and resetting movement, operate
Simply, without the operation such as being dismantled, being slided to threshold.
Further preferred technical solution is, the doorframe column bottom end is equipped with blind hole, the radial direction of the blind hole with
The length direction of doorframe column is identical, and one end of the spring is connect with blind via bottom, the other end of the spring and threshold
Both ends connection.
If necessary to enter and leave for a long time or frequently, technical solution still more preferably is the doorframe column phase
Rectangle limit pin hole is provided with to side, the bottom edge of the limit pin hole is 0.5-1cm at a distance from ground level, and limit pin hole
Long side be parallel to the horizontal plane.It is embedded in groove when threshold is depressed, the objects such as inserted link or screw or iron plate are inserted into spacer pin
It in hole, prevents threshold rebound from resetting, after work, is extracted by objects such as inserted links, threshold is made to restore origin-location.
Preferred technical solution is that the overturning structure includes the shaft that threshold can be made to overturn, and the shaft and threshold are solid
Fixed connection.Threshold is overturn by shaft, makes to form barrier free accessibility channel inside and outside access door.
Further preferred technical solution is that the threshold is strip, and the overturning structure further includes being arranged described
Doorframe column medial surface and can make threshold overturning insertion turning groove or plane of the opening flushed with ground level threshold can be made to turn over
Turn the geosyncline of insertion, the depth of the geosyncline is not less than the width of the threshold.It will be in the threshold insertion doorframe column of overturning
Turning groove, the depth of turning groove are not less than threshold width, and threshold will all overturn and be embedded in turning groove, realize that the maximum of access door is logical
Line width can make larger size cargo smoothly pass through.
Preferred technical solution is that the threshold is U-shaped, and the bottom of the doorframe column has inserting groove, the grafting
The side of slot is parallel with doorframe column opposite flank, and the both ends of the threshold have the protrusion matched with the inserting groove, institute
Stating overturning structure includes the geosyncline that can make threshold overturning insertion that shaft and plane of the opening are flushed with ground level, the depth of the geosyncline
Degree is not less than the width of the threshold.Threshold is U-shaped, and being not easy to threshold, perhaps right side overturning can inwardly or outside to the left
Rollover is transferred in geosyncline,
Preferred technical solution is that the threshold is the U-shaped air bag made of rubber material, the bottom of the doorframe column
With inserting groove, the both ends of the U-shaped air bag threshold have the protrusion matched with the inserting groove, and the end of the threshold is set
There are aeration aperture and air vent, the air charging system includes electric air pump and gas pressure regulator, and the aeration aperture passes through pipeline and electricity
Pump of taking offence connects.U-shaped air bag threshold, material is light, in order to make cargo more easily pass in and out isolating door, is formed at isolation gate threshold
Wheelchair Accessible can open air bag air vent, and gas in air bag is discharged, and height of lowering the threshold is gone together convenient for cargo.
The advantages and beneficial effects of the present invention are: threshold bottom surface of the invention is horizontal, in conjunction with doorframe column, make doorframe
Structure is safe and secure, and threshold and ground seal, and can reduce wave influence;Threshold have the function of it is detachable or hiding, in goods
Object can make threshold lifting, hide or overturn when current, access door threshold position and ground level is made to be in same plane, can be accessible
Ground connection, is arranged threshold positioning limiting fixator, prevents threshold from sliding, influence the safety of discrepancy personnel, cargo.
Detailed description of the invention
Fig. 1 is 1 doorframe column of the embodiment of the present invention and threshold connection schematic diagram;
Fig. 2 is positive structure diagram of 1 pin hole of the embodiment of the present invention on sliding slot top;
Fig. 3 is positive structure diagram of 1 pin hole of the embodiment of the present invention in sliding slot side;
Fig. 4 is the structural schematic diagram that the embodiment of the present invention 2 omits side doorframe column;
Fig. 5 is the structural schematic diagram that the embodiment of the present invention 3 omits side doorframe column and threshold one end;
Fig. 6 is the positive structure diagram of the embodiment of the present invention 4;
Fig. 7 is the structural schematic diagram that the embodiment of the present invention 5 omits side doorframe column;
Fig. 8 is the top view cross section structural schematic diagram of the doorframe column bottom of the embodiment of the present invention 6;
Fig. 9 is the doorsill structure positive structure diagram of the embodiment of the present invention 7.
In figure: 1, threshold;2, doorframe column;3, sliding slot;4, pin hole;5, sliding block;6, spring;7, groove;8, shaft;9, it turns over
Turn trough;7, inserting groove;8, aeration aperture;9, air vent;10, geosyncline;11, inserting groove;12, raised;13, aeration aperture;14, electronic gas
Pump;15, gas pressure regulator.
Specific embodiment
With reference to the accompanying drawings and examples, further description of the specific embodiments of the present invention.Following embodiment is only
For clearly illustrating technical solution of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment 1
As shown in Figure 1-3, a kind of peculiar to vessel detachable or hiding doorsill structure, including doorframe, threshold 1 and lifting structure,
The left end of the threshold 1 and right end cooperate with 2 seam allowance of the doorframe column of left and right side respectively, and the seam allowance is bolted
Connection, the threshold 1 are the U-shaped of bottom surface level, and the threshold 1 side opposite with 1 seam allowance of threshold is equipped with sliding block 5, the door
Frame column 2 is in the sliding slot 3 and locating part that the indoor medial surface in cabin is equipped with top closure, and the locating part is that 2 groups of limits are inserted
The combination of bar and pin hole 4, between the distance between 3 top of the pin hole 4 and sliding slot and screw hole on sliding block 5 and threshold both ends seam allowance
Be equidistant, the pin hole 5 is matched with the pore size of screw hole, position on 1 both ends seam allowance of threshold.
When threshold by it is lower from lower section disassembly after, so that threshold is slid into the top of doorframe column by the cooperation of sliding block and sliding slot
Screw hole on threshold seam allowance is connected and fixed threshold with doorframe column top limit screw hole using bolt, to prevent threshold landing by end.
Alternatively, the distance between 3 top of pin hole 6 and sliding slot is not less than and the distance between sliding block 5 and threshold bottom surface.
The pin hole can be set on the opposite medial surface of doorframe column, and the opposite side setting of doorframe column is vertically worn
The jack of sliding slot is crossed, blind hole is greater than sliding block diameter at a distance from sliding slot top, and the threshold disassembled is sliding to doorframe column top
When dynamic, first limit inserted link and remove, when the sliding block of threshold slides into sliding slot top, limit inserted link passes through the side of sliding slot from jack
Side, lattice block sliding block, fix and limit threshold falling.
Embodiment 2
As shown in figure 4, a kind of peculiar to vessel detachable or hiding doorsill structure, including doorframe, threshold 1 and lifting structure, institute
The left end and right end for stating threshold 1 are matched with the doorframe column of left and right side 2 respectively, and the threshold 1 is the length of bottom surface level
Bar shaped, the lifting structure include the sliding slot 3 and locating part that can make threshold sliding opposite with doorframe column.The sliding slot 3 is set
It sets in the opposite side surface of doorframe column 2 and 1 end of the threshold is plugged in the sliding slot 3 of 2 side surface of doorframe column, the limit
Position part is the combination of 2 groups of limit inserted links and pin hole 4, and the pin hole is separately positioned on doorframe column 2, and the limit inserted link runs through
A side of the sliding slot 3.
After threshold is disassembled lower from cabin interior, threshold is set to slide into the top of doorframe column by sliding slot, using limit
The cooperation of position inserted link and pin hole limits fixed threshold, to prevent threshold landing.It is not less than at a distance from the top of the limit pin hole with sliding slot
When the height of threshold, limit inserted link through sliding slot a side be inserted into pin hole, stop threshold from sliding slot slide or pin hole with
Distance at the top of sliding slot might be less that the height of threshold, in this way, blind hole can be set in the position that threshold is matched with sliding slot,
Blind hole and pin hole position, aperture match, and when threshold slides at the top of sliding slot, inserted link passes through pin hole and is inserted into blind hole, can also limit
The fixed threshold in position, is unlikely to make to slide.The threshold for sliding into top can also be caught on using with hook fixed at the top of doorframe
It is fixed, prevent threshold from sliding.
Embodiment 3
As shown in figure 5, a kind of peculiar to vessel detachable or hiding doorsill structure, including doorframe, threshold 1 and lifting structure, institute
The left end and right end for stating threshold 1 are matched with the doorframe column of left and right side 2 respectively, and the threshold 1 is the length of bottom surface level
Bar shaped, the lifting structure include the sliding slot 3 and locating part that can make threshold sliding opposite with doorframe column.The sliding slot 3 is set
It sets at 1 both ends of threshold and in the sliding slot 3 that the doorframe column 2 is plugged in 1 top of threshold and is fitted close, the locating part is 2
The combination of group limit inserted link and pin hole 4, the pin hole are separately positioned on doorframe column 2, and the limit inserted link runs through the cunning
A side of slot 3.
Embodiment 4
As shown in fig. 6, a kind of peculiar to vessel detachable or hiding doorsill structure, including doorframe, threshold 1 and lifting structure, institute
The left end and right end for stating threshold 1 are matched with the doorframe column of left and right side 2 respectively, and the threshold 1 is the length of bottom surface level
Bar shaped, the lifting structure include the groove 7 that at least two springs 6 and plane of the opening are flushed with ground level, and the groove 7 can
It is vertically embedded into 1 bottom of threshold, the depth of the groove 7 is not less than the height of the threshold, the threshold bottom and institute
It states groove 7 to partly overlap, 2 bottom end of doorframe column is equipped with blind hole, the radial direction of the blind hole and the length of doorframe column 2
Direction is identical, and one end of the spring 6 is connect with blind via bottom, and the other end of the spring and the both ends of threshold connect.
Can also by spring perpendicular to groove floor be arranged and be fixedly connected with groove floor, the other end of spring with it is described
The both ends of threshold are fixedly connected, and the free state length of spring is less than the depth of groove.
It is self-possessed when the trolley by the threshold and is insufficient to allow threshold landing, hides, strip can be set by threshold
Cylindrical body, when the trolley from heavy and light is by cylindrical threshold, since threshold surface is round and smooth, lorry more easily by.
Embodiment 5
As shown in fig. 7, a kind of peculiar to vessel detachable or hiding doorsill structure, including doorframe, threshold 1 and overturning structure, institute
The left end and right end for stating threshold 1 are matched with the doorframe column of left and right side 2 respectively, and the threshold 1 is the length of bottom surface level
Bar shaped, the overturning structure include that can make the shaft 8 of the upward flip vertical of threshold and the doorframe column medial surface is arranged in
And the turning groove 9 of threshold overturning insertion can be made, the shaft 8 is fixedly connected with one end of threshold 1.
The one end for the fixation threshold that can not be penetrated through relatively using a shaft through the end of threshold or two shafts,
Threshold is flipped up by rotation fulcrum of shaft, the turning groove being embedded in doorframe column.Threshold can be overturn to the left or to the right,
After threshold can also being divided into two sections, overturn to the left, to the right respectively.
Embodiment 6
As shown in figure 8, a kind of peculiar to vessel detachable or hiding doorsill structure, including doorframe, threshold 1 and overturning structure, institute
The left end and right end for stating threshold 1 are matched with the doorframe column of left and right side 2 respectively, and the threshold 1 is the U of bottom surface level
The bottom of shape, the doorframe column has inserting groove 11, and the side of the inserting groove 11 is parallel with doorframe column opposite flank, institute
The both ends for stating threshold have the protrusion matched with the inserting groove 11, and the overturning structure includes that threshold can be made vertically to turn over upwards
What the shaft 8 and plane of the opening turned was flushed with ground level can make the geosyncline 10 of threshold overturning insertion, and the depth of the geosyncline 10 is not
Less than the width of the threshold 1.The shaft 8 is fixedly connected with threshold bottom edge.
Bottom edge is fixedly connected on the inside of shaft and threshold, and geosyncline is arranged in cabin, the ground before threshold, then threshold can be to
It overturns, is reversed, then threshold is overturn to outside cabin in cabin.
Embodiment 7
As shown in figure 9, a kind of peculiar to vessel detachable or hiding doorsill structure, including doorframe, threshold 1 and inflatable structure, institute
The left end and right end for stating threshold 1 are matched with the doorframe column of left and right side 2 respectively, and the threshold is bottom surface level by rubber
U-shaped air bag made of glue material matter, the bottom of the doorframe column have an inserting groove, the both ends of the U-shaped air bag threshold have with
The end of the protrusion 12 that the inserting groove matches, the threshold is equipped with aeration aperture 13, and the inflatable structure includes electric air pump
14 and gas pressure regulator 15, the aeration aperture 13 is connect by pipeline with electric air pump 14.
In order to place air charging system orderly, the switch for influencing access door and the disengaging of personnel are avoided, further preferred
Technical solution is that the medial surface that doorframe column is located at cabin, the electric air pump and pressure control is arranged in the gas ducting
Device is arranged on the bulkhead at the top of doorframe.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of peculiar to vessel detachable or hiding doorsill structure, including doorframe, threshold, the left end of the threshold and right end respectively with
The doorframe column of left and right side matches, which is characterized in that the threshold is the U-shaped or strip of bottom surface level, the door
Sill structure further includes lifting structure or overturning structure or inflatable structure.
2. peculiar to vessel detachable or hiding doorsill structure according to claim 1, which is characterized in that the lifting structure packet
Include the sliding slot and locating part that can make threshold sliding opposite with doorframe column.
3. peculiar to vessel detachable or hiding doorsill structure according to claim 2, which is characterized in that the sliding slot setting exists
Threshold both ends and the doorframe column are plugged in the sliding slot on threshold top or the opposite side of doorframe column is arranged in the sliding slot
The surface and threshold end is plugged in the sliding slot of doorframe column side surface, the locating part are 2 groups of limit inserted links and pin hole
Combination, the pin hole is separately positioned on doorframe column, and the limit inserted link runs through a side of the sliding slot.
4. peculiar to vessel detachable or hiding doorsill structure according to claim 1, which is characterized in that the lifting structure packet
The groove that at least two springs and plane of the opening are flushed with ground level is included, the groove can make the threshold bottom vertically embedding
Enter, the depth of the groove is not less than the height on the threshold bottom edge, and the threshold bottom is Chong Die with the groove part, described
Spring is fixedly connected with the both ends of threshold.
5. peculiar to vessel detachable or hiding doorsill structure according to claim 4, which is characterized in that the doorframe column bottom
End is equipped with blind hole, and the radial direction of the blind hole and the length direction of doorframe column are identical, one end and blind hole bottom of the spring
Portion's connection, the other end of the spring and the both ends of threshold connect.
6. peculiar to vessel detachable or hiding doorsill structure according to claim 4 or 5, which is characterized in that the doorframe is vertical
Column opposite flank is provided with rectangle limit pin hole, and the bottom edge of the limit pin hole is 0.5-1cm at a distance from ground level, and is limited
The long side of pin hole is parallel to the horizontal plane.
7. peculiar to vessel detachable or hiding doorsill structure according to claim 1, which is characterized in that the overturning structure packet
The shaft that threshold can be made to overturn is included, the shaft is fixedly connected with threshold.
8. peculiar to vessel detachable or hiding doorsill structure according to claim 7, which is characterized in that the threshold is strip
Shape, the overturning structure further include turning groove that the doorframe column medial surface is arranged in and that threshold overturning can be made to be embedded in or open
What mouth plane was flushed with ground level can make the geosyncline of threshold overturning insertion, and the depth of the geosyncline is not less than the width of the threshold
Degree.
9. peculiar to vessel detachable or hiding doorsill structure according to claim 7, which is characterized in that the threshold is U-shaped,
The bottom of the doorframe column has inserting groove, and the side of the inserting groove is parallel with doorframe column opposite flank, the threshold
Both ends there is the protrusion that matches with the inserting groove, the overturning structure includes that shaft and plane of the opening are flushed with ground level
The geosyncline that can make threshold overturning insertion, the depth of the geosyncline is not less than the width of the threshold.
10. peculiar to vessel detachable or hiding doorsill structure according to claim 1, which is characterized in that the threshold is bottom
The bottom of the U-shaped air bag made of rubber material of face level, the doorframe column has inserting groove, the U-shaped air bag threshold
Both ends there is the protrusion that matches with the inserting groove, the end of the threshold is equipped with aeration aperture, and the inflatable structure includes
Electric air pump and gas pressure regulator, the aeration aperture are connect by pipeline with electric air pump.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810980509.5A CN109138739A (en) | 2018-08-27 | 2018-08-27 | A kind of peculiar to vessel detachable or hiding doorsill structure |
Applications Claiming Priority (1)
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CN201810980509.5A CN109138739A (en) | 2018-08-27 | 2018-08-27 | A kind of peculiar to vessel detachable or hiding doorsill structure |
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ID=64828275
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CN201810980509.5A Pending CN109138739A (en) | 2018-08-27 | 2018-08-27 | A kind of peculiar to vessel detachable or hiding doorsill structure |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114987680A (en) * | 2022-06-29 | 2022-09-02 | 上海外高桥造船有限公司 | Threshold protection device and threshold subassembly |
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CN206693824U (en) * | 2017-03-17 | 2017-12-01 | 苏州江澜生态农业科技发展有限公司 | Adjustable type logistics slide-lifting door |
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CN107939254A (en) * | 2017-10-20 | 2018-04-20 | 株洲合力电磁技术有限公司 | A kind of biparting Abdeckschieber door |
CN108193982A (en) * | 2018-01-31 | 2018-06-22 | 上海泛德声学工程有限公司 | A kind of doorsill structure |
CN209523609U (en) * | 2018-08-27 | 2019-10-22 | 中船澄西船舶修造有限公司 | A kind of peculiar to vessel detachable or hiding doorsill structure |
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CN101269776A (en) * | 2007-03-23 | 2008-09-24 | 维托控股有限公司 | Elevator door sill with hidden guide |
DE202007015160U1 (en) * | 2007-10-30 | 2009-03-12 | Frey, Inge | Door frame with a threshold |
KR20140068684A (en) * | 2012-11-28 | 2014-06-09 | 아이팜 주식회사 | Threshold rise-fall apparatus for fire prevention door |
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CN206693824U (en) * | 2017-03-17 | 2017-12-01 | 苏州江澜生态农业科技发展有限公司 | Adjustable type logistics slide-lifting door |
CN107740656A (en) * | 2017-10-20 | 2018-02-27 | 株洲合力电磁技术有限公司 | A kind of biparting Abdeckschieber door mounting structure and installation method |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN114987680A (en) * | 2022-06-29 | 2022-09-02 | 上海外高桥造船有限公司 | Threshold protection device and threshold subassembly |
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