CN112145038A - Suspension device of suspension type radiation protection door - Google Patents

Suspension device of suspension type radiation protection door Download PDF

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Publication number
CN112145038A
CN112145038A CN202010810566.6A CN202010810566A CN112145038A CN 112145038 A CN112145038 A CN 112145038A CN 202010810566 A CN202010810566 A CN 202010810566A CN 112145038 A CN112145038 A CN 112145038A
Authority
CN
China
Prior art keywords
movable door
door
guide rail
shaft
gear
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.)
Pending
Application number
CN202010810566.6A
Other languages
Chinese (zh)
Inventor
邹鹏才
许达
孟凡亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianyi Ruibang Environmental Engineering Co ltd
Original Assignee
Tianyi Ruibang Environmental Engineering Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tianyi Ruibang Environmental Engineering Co ltd filed Critical Tianyi Ruibang Environmental Engineering Co ltd
Priority to CN202010810566.6A priority Critical patent/CN112145038A/en
Publication of CN112145038A publication Critical patent/CN112145038A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
    • E06B3/34—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement
    • E06B3/42—Sliding wings; Details of frames with respect to guiding
    • E06B3/46—Horizontally-sliding wings
    • E06B3/4636—Horizontally-sliding wings for doors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/06—Suspension arrangements for wings for wings sliding horizontally more or less in their own plane
    • E05D15/0621—Details, e.g. suspension or supporting guides
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/06—Suspension arrangements for wings for wings sliding horizontally more or less in their own plane
    • E05D15/0621—Details, e.g. suspension or supporting guides
    • E05D15/066—Details, e.g. suspension or supporting guides for wings supported at the bottom
    • E05D15/0686—Tracks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/632—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings
    • E05F15/635—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by push-pull mechanisms, e.g. flexible or rigid rack-and-pinion arrangements
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

The invention discloses a suspension device of a suspension type radiation protection door, which comprises a door opening arranged on a wall body, and a first movable door and a second movable door which are symmetrically arranged at two sides of the door opening, wherein a first guide rail is arranged on the ground, the bottoms of the first movable door and the second movable door are embedded in the first guide rail, a second guide rail is arranged on the wall body, a first boss is arranged on the side surface of the first movable door, a second boss is arranged on the side surface of the second movable door, and the first boss and the second boss are embedded in the second guide rail; the eccentric shaft is connected with the moving block, the moving action drives the first moving door and the second moving door to move simultaneously, opening and closing are achieved, and the seamless connection between the doors and the ground is guaranteed due to the arrangement of the first guide rail.

Description

Suspension device of suspension type radiation protection door
Technical Field
The invention relates to the technical field of protective doors, in particular to a suspension device of a suspension type radiation protective door.
Background
The existing radiation-proof door has a hinge opening and closing type and a guide rail translation type. Regarding the sliding door, the sealing problem (in order to make the sliding door open and close more smoothly), namely the wire leakage problem, exists at the upper side, the lower side, the left side and the right side; most of the existing modes are further sealing after the door is closed, and the steps are more and are more troublesome.
Therefore, a high-shielding suspension type electric radiation protection sliding door is designed, and the problem of wire leakage after the door is closed is solved in one step.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments, and in this section as well as in the abstract and the title of the invention of this application some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made keeping in mind the above problems occurring in the prior art and/or the problems occurring in the prior art.
Therefore, the technical problem to be solved by the invention is that the existing shielding door has a leak when being closed.
In order to solve the technical problems, the invention provides the following technical scheme: a suspension device of a suspension type radiation protection door comprises a door opening arranged on a wall body, and a first movable door and a second movable door which are symmetrically arranged on two sides of the door opening, wherein a first guide rail is arranged on the ground, the bottoms of the first movable door and the second movable door are embedded in the first guide rail, a second guide rail is arranged on the wall body, a first boss is arranged on the side surface of the first movable door, a second boss is arranged on the side surface of the second movable door, and the first boss and the second boss are embedded in the second guide rail;
the wall body is further provided with a third guide rail, a moving block is embedded in the third guide rail, the moving block is connected with the first movable door through a first connecting rod, the moving block is connected with the second movable door through a second connecting rod, a first gear is arranged above the third guide rail, the first gear is connected with the moving block through a third connecting rod, a second gear is further arranged on the wall body, the second gear is connected with a motor with the same axis, and the second gear is meshed with the first gear.
As a preferred embodiment of the suspension device of the suspended radiation protection door of the present invention, wherein: the second guide rail is horizontally arranged, and the third guide rail is vertically arranged and corresponds to the middle position of the door opening.
As a preferred embodiment of the suspension device of the suspended radiation protection door of the present invention, wherein: an inner embedded groove is formed in the bottom of the second movable door, a pulley is arranged in the inner embedded groove, and the pulley exceeds the inner embedded groove to the outside of the second movable door;
the first movable door width and the second movable door are identical in structure.
As a preferred embodiment of the suspension device of the suspended radiation protection door of the present invention, wherein: the first guide rail comprises a limiting groove and a guide groove, the bottom of the second movable door is embedded in the limiting groove, the width of the bottom of the second movable door is the same as that of the limiting groove, and the pulley is arranged in the guide groove and contacts with the bottom surface of the guide groove.
As a preferred embodiment of the suspension device of the suspended radiation protection door of the present invention, wherein: and a gap is reserved between the first bottom surface of the second movable door and the second bottom surface of the limiting groove.
As a preferred embodiment of the suspension device of the suspended radiation protection door of the present invention, wherein: a first shaft is arranged on the first movable door, a second shaft is arranged on the second movable door, a third shaft and a fourth shaft are arranged on the movable block, and the third shaft and the fourth shaft are symmetrically arranged on the movable block;
the first connecting rod is connected with the first shaft and the third shaft, and the second connecting rod is connected with the second shaft and the fourth shaft.
As a preferred embodiment of the suspension device of the suspended radiation protection door of the present invention, wherein: and a fifth shaft is arranged in the middle of the moving block, an eccentric shaft is arranged on the first gear, and the eccentric shaft is deviated from the center of the first gear.
As a preferred embodiment of the suspension device of the suspended radiation protection door of the present invention, wherein: the wall body is further provided with a protection plate, and the first gear and the second gear are shielded by the protection plate.
As a preferred embodiment of the suspension device of the suspended radiation protection door of the present invention, wherein: the opposite face of second floating gate and first floating gate is provided with draw-in groove and ka tai, draw-in groove and ka tai size cooperation.
The invention has the beneficial effects that: the eccentric shaft is connected with the moving block, the moving action drives the first moving door and the second moving door to move simultaneously, opening and closing are achieved, and the seamless connection between the doors and the ground is guaranteed due to the arrangement of the first guide rail.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a schematic view illustrating a placement structure of a first movable door and a second movable door in a suspension device of a suspended radiation protection door according to an embodiment of the present invention;
FIG. 2 is a schematic view of a suspension device of a suspended radiation protection door according to an embodiment of the present invention, showing an eccentric shaft;
FIG. 3 is a schematic view of a connection structure between a first moving door and a first connecting rod and a first gear in a suspension device of a suspended radiation protection door according to an embodiment of the present invention;
fig. 4 is a schematic front view of a wall of a suspension device of a suspended radiation protection door according to an embodiment of the present invention;
FIG. 5 is a schematic view of a back side of a wall of a suspension device of a suspended radiation protection door according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a guide rail in a suspension device of a suspended radiation protection door according to an embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 6, the embodiment provides a suspension device for a suspension type radiation protection door, which includes a door opening B formed in a wall a, and a first movable door 1 and a second movable door 2 symmetrically arranged on both sides of the door opening B, a first guide rail 3 is arranged on a ground C, bottoms of the first movable door 1 and the second movable door 2 are embedded in the first guide rail 3, a second guide rail 4 is arranged on the wall a, a first boss 11 is arranged on a side surface of the first movable door 1, a second boss 21 is arranged on a side surface of the second movable door 2, and the first boss 11 and the second boss 21 are embedded in the second guide rail 4;
the wall body A is further provided with a third guide rail 5, a moving block 6 is embedded in the third guide rail 5, the moving block 6 is connected with the first movable door 1 through a first connecting rod 7, the moving block 6 is connected with the second movable door 2 through a second connecting rod 8, a first gear 9 is arranged above the third guide rail 5, the first gear 9 is connected with the moving block 6 through a third connecting rod 10, a second gear 20 is further arranged on the wall body A, the second gear 20 is coaxially connected with a motor 30, and the second gear 20 is meshed with the first gear 9.
The second guide rail 4 is horizontally arranged, and the third guide rail 5 is vertically arranged and corresponds to the middle position of the door opening B.
An inner embedded groove 22 is formed in the bottom of the second movable door 2, a pulley 23 is arranged in the inner embedded groove 22, and the pulley 23 exceeds the inner embedded groove 22 to the outside of the second movable door 2;
the width of the first moving door 1 and the second moving door 2 are the same.
The first guide rail 3 comprises a limiting groove 31 and a guide groove 32, the bottom of the second movable door 2 is embedded in the limiting groove 31, the width of the bottom of the second movable door 2 is the same as that of the limiting groove 31, and the pulley 23 is arranged in the guide groove 32 and contacts with the bottom surface of the guide groove 32.
A gap is formed between the first bottom surface 24 of the second moving door 2 and the second bottom surface 311 of the stopper groove 31.
A first shaft 12 is arranged on the first movable door 1, a second shaft 25 is arranged on the second movable door 2, a third shaft 61 and a fourth shaft 62 are arranged on the movable block 6, and the third shaft 61 and the fourth shaft 62 are symmetrically arranged on the movable block 6;
the first link 7 connects the first shaft 12 and the third shaft 61, and the second link 8 connects the second shaft 25 and the fourth shaft 62.
The middle position of the moving block 6 is provided with a fifth shaft 63, the first gear 9 is provided with an eccentric shaft 91, and the eccentric shaft 91 is deviated from the center of the first gear 9.
The wall A is further provided with a protection plate 40, and the first gear 9 and the second gear 20 are shielded by the protection plate 40.
The opposite surfaces of the second movable door 2 and the first movable door 1 are provided with a clamping groove 18 and a clamping table 19, and the clamping groove 18 and the clamping table 19 are matched in size.
The motor 30 is fixed to the inside of the guard plate 40.
In the embodiment, the motor 30 is started to drive the second gear 20 to rotate, the first gear 9 rotates through gear meshing transmission, the eccentric shaft 91 is arranged eccentrically to the first gear 9, the third connecting rod 10 is connected with the eccentric shaft 91 and the fifth shaft 63, so that the first gear 9 rotates, the eccentric shaft 91 drives the third connecting rod 10 to move, the moving block 6 connected to the other end of the third connecting rod 10 is arranged in the second guide rail 5, and the moving block 6 is limited by the latter, so that the first gear 9 rotates the moving block 6 to move up and down along the second guide rail 5.
The moving block 6 moves up and down to drive the first moving door 1 and the second moving door 2 to move synchronously, opening and closing are achieved, the bottoms of the first moving door 1 and the second moving door 2 are embedded into the first guide rail 3, the gap between the first bottom surface 24 of the second moving door 2 and the second bottom surface 311 of the limiting groove 31 can reduce contact friction, the limiting groove 31 limits the width directions of the first moving door 1 and the second moving door 2, and the pulley 23 is arranged in the guide groove 32 to move conveniently.
The opposite surfaces of the second movable door 2 and the first movable door 1 are provided with a clamping groove 18 and a clamping table 19, and the clamping groove 18 and the clamping table 19 are matched in size, so that the second movable door 2 and the first movable door 1 are embedded together to keep sealing after the second movable door 2 and the first movable door 1 are closed.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims (9)

1. The utility model provides a linkage of suspension type radiation protection door which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the movable door comprises a door opening (B) formed in a wall body (A), a first movable door (1) and a second movable door (2) symmetrically arranged on two sides of the door opening (B), a first guide rail (3) is arranged on the ground (C), the bottoms of the first movable door (1) and the second movable door (2) are embedded in the first guide rail (3), a second guide rail (4) is arranged on the wall body (A), a first boss (11) is arranged on the side surface of the first movable door (1), a second boss (21) is arranged on the side surface of the second movable door (2), and the first boss (11) and the second boss (21) are embedded in the second guide rail (4);
the wall body (A) is further provided with a third guide rail (5), a moving block (6) is embedded in the third guide rail (5), the moving block (6) is connected with the first movable door (1) through a first connecting rod (7), the moving block (6) is connected with the second movable door (2) through a second connecting rod (8), a first gear (9) is arranged above the third guide rail (5), the first gear (9) is connected with the moving block (6) through a third connecting rod (10), a second gear (20) is further arranged on the wall body (A), the second gear (20) is coaxially connected with a motor (30), and the second gear (20) is meshed with the first gear (9).
2. The hanging apparatus of claim 1, wherein: the second guide rail (4) is horizontally arranged, and the third guide rail (5) is vertically arranged and corresponds to the middle position of the door opening (B).
3. The hanging device of a hanging radiation protection door according to claim 1 or 2, wherein: an inner embedded groove (22) is formed in the bottom of the second movable door (2), a pulley (23) is arranged in the inner embedded groove (22), and the pulley (23) exceeds the inner embedded groove (22) to the outside of the second movable door (2);
the width of the first movable door (1) is the same as that of the second movable door (2).
4. The hanging apparatus of claim 3, wherein: the first guide rail (3) comprises a limiting groove (31) and a guide groove (32), the bottom of the second movable door (2) is embedded in the limiting groove (31), the width of the bottom of the second movable door (2) is equal to that of the limiting groove (31), and the pulley (23) is arranged in the guide groove (32) and contacts with the bottom surface of the guide groove (32).
5. The hanging apparatus of claim 4, wherein: a gap is reserved between the first bottom surface (24) of the second movable door (2) and the second bottom surface (311) of the limiting groove (31).
6. The hanging apparatus of claim 5, wherein: a first shaft (12) is arranged on the first movable door (1), a second shaft (25) is arranged on the second movable door (2), a third shaft (61) and a fourth shaft (62) are arranged on the movable block (6), and the third shaft (61) and the fourth shaft (62) are symmetrically arranged on the movable block (6);
the first connecting rod (7) connects the first shaft (12) and a third shaft (61), and the second connecting rod (8) connects the second shaft (25) and a fourth shaft (62).
7. The hanging device of the hanging type radiation protection door according to any one of claims 4 to 6, wherein: a fifth shaft (63) is arranged in the middle of the moving block (6), an eccentric shaft (91) is arranged on the first gear (9), and the eccentric shaft (91) deviates from the center of the first gear (9).
8. The hanging apparatus of claim 7, wherein: the wall body (A) is further provided with a protection plate (40), and the first gear (9) and the second gear (20) are shielded by the protection plate (40).
9. The hanging apparatus of claim 7, wherein: the opposite surfaces of the second movable door (2) and the first movable door (1) are provided with a clamping groove (18) and a clamping table (19), and the clamping groove (18) is matched with the clamping table (19) in size.
CN202010810566.6A 2020-08-13 2020-08-13 Suspension device of suspension type radiation protection door Pending CN112145038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010810566.6A CN112145038A (en) 2020-08-13 2020-08-13 Suspension device of suspension type radiation protection door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010810566.6A CN112145038A (en) 2020-08-13 2020-08-13 Suspension device of suspension type radiation protection door

Publications (1)

Publication Number Publication Date
CN112145038A true CN112145038A (en) 2020-12-29

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ID=73887951

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010810566.6A Pending CN112145038A (en) 2020-08-13 2020-08-13 Suspension device of suspension type radiation protection door

Country Status (1)

Country Link
CN (1) CN112145038A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998245A (en) * 1959-04-20 1961-08-29 Dover Corp Power operator for elevator doors and the like
US3406484A (en) * 1966-12-22 1968-10-22 Dover Corp Door operator mechanism
US4057934A (en) * 1974-04-05 1977-11-15 Hitachi, Ltd. Protection system for automatically openable and closable door
WO2000007922A1 (en) * 1998-08-05 2000-02-17 Vertisys International, Inc. Door operator for elevators having curved doors
CN202913914U (en) * 2012-11-06 2013-05-01 武汉海王新能源工程技术有限公司 Heavy-load suspension-type sliding shield door

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998245A (en) * 1959-04-20 1961-08-29 Dover Corp Power operator for elevator doors and the like
US3406484A (en) * 1966-12-22 1968-10-22 Dover Corp Door operator mechanism
US4057934A (en) * 1974-04-05 1977-11-15 Hitachi, Ltd. Protection system for automatically openable and closable door
WO2000007922A1 (en) * 1998-08-05 2000-02-17 Vertisys International, Inc. Door operator for elevators having curved doors
CN202913914U (en) * 2012-11-06 2013-05-01 武汉海王新能源工程技术有限公司 Heavy-load suspension-type sliding shield door

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Application publication date: 20201229