CN113802958B - Electric turnover structure's hanging hole cover plate - Google Patents
Electric turnover structure's hanging hole cover plate Download PDFInfo
- Publication number
- CN113802958B CN113802958B CN202110980064.2A CN202110980064A CN113802958B CN 113802958 B CN113802958 B CN 113802958B CN 202110980064 A CN202110980064 A CN 202110980064A CN 113802958 B CN113802958 B CN 113802958B
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- Prior art keywords
- opening
- support
- closing
- driving
- turnover
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- 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.)
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- 230000007306 turnover Effects 0.000 title claims abstract description 42
- 230000002441 reversible effect Effects 0.000 claims abstract description 4
- 230000001360 synchronised effect Effects 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Images
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
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/01—Trap-doors
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- 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
-
- 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
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/614—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by meshing gear wheels, one of which being mounted at the wing pivot axis; operated by a motor acting directly on the wing pivot axis
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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
- 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
- E06B3/50—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 more than one kind of movement
- E06B3/5009—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 more than one kind of movement where the sliding and rotating movements are necessarily performed simultaneously
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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
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
- E06B9/04—Shutters, movable grilles, or other safety closing devices, e.g. against burglary of wing type, e.g. revolving or sliding
-
- 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
- E05Y2999/00—Subject-matter not otherwise provided for in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses a hanging hole cover plate of an electric turnover structure, which comprises an outer frame, wherein the outer frame is arranged on a periphery of a rectangular hanging hole and is matched with the shape of the hanging hole, and the outer frame comprises two short sides which are oppositely arranged and two long sides which are oppositely arranged; the two short sides are respectively provided with a retractable guardrail with the same structure; the two long edges are respectively provided with movable and reversible door plates with the same structure; one end of the guardrail is hinged with a support arranged on the side wall of the short side; the hinge joint of the guardrail and the support along the length direction of the guardrail is also provided with a plurality of opening and closing driving devices for driving the guardrail to open and close; the side wall of the short side is also provided with a sliding rail along the length direction, and the sliding rail is positioned below the support; the door plate is characterized in that the middle parts of the two sides of the back surface of the door plate are respectively provided with a movable driving device and a turnover driving device, the movable driving devices are positioned below the turnover driving devices, the cover plate is reasonable in structure and convenient to open and close, and the overall height of the door plate is low after the door plate is opened.
Description
Technical Field
The invention relates to the field of suspended object hole cover plates, in particular to a suspended object hole cover plate with an electric overturning structure.
Background
Because some suspended object holes are large in size (for example, the length is 8 meters, and the width is more than 3.2 meters in general); and the special requirement of lifting operation or the door plate is limited in the door opening direction, the door plate of the lifting hole cannot adopt the conventional technology of folding the longitudinal short side, and when the door plate is transversely split, the dead weight and the external load of the door plate are supported by adopting a steel beam with a larger model due to the larger span of the door plate, and the conventional split door technology (the door plate is hinged with the outer frame) can influence the lifting sight line when the height of the door plate after being opened exceeds 1.6 meters, and can not cause the lifting part to be lifted out due to insufficient lifting height of lifting equipment.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the suspended object hole cover plate with the electric turnover structure, which has reasonable structure, is convenient to open and close and has low overall height after the door plate is opened.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides an electronic flip's hanging hole apron, includes and sets up in rectangle hanging hole border and hanging the frame that thing hole shape matches, the frame includes two minor faces that set up in opposite directions and two long limits that set up in opposite directions; the two short sides are respectively provided with a retractable guardrail with the same structure; the two long edges are respectively provided with movable and reversible door plates with the same structure; one end of the guardrail is hinged with a support arranged on the side wall of the short side; the hinge joint of the guardrail and the support along the length direction of the guardrail is also provided with a plurality of opening and closing driving devices for driving the guardrail to open and close; the side wall of the short side is also provided with a sliding rail along the length direction, and the sliding rail is positioned below the support; the middle parts of the two sides of the back surface of the door plate are respectively provided with a movable driving device and a turnover driving device, and the movable driving devices are positioned below the turnover driving devices.
Preferably, the opening and closing driving device comprises an opening and closing driving gear and a sector gear arranged at the hinge point of the guardrail and the support; and an opening and closing driven gear is further arranged between the opening and closing driving gear and the sector gear.
Preferably, the opening and closing driving devices are connected by an opening and closing synchronous shaft; the synchronous shaft is arranged in the center of the driving gear in a penetrating mode, one end or two ends of the synchronous shaft are provided with opening and closing driving motors, and the opening and closing driving motors are arranged on the support.
Preferably, the movable driving device comprises a first support fixed on the back of the door plate, a movable driving motor is arranged on the first support, and a movable driving gear is arranged at the output end of the movable driving motor through the rear end part of a connecting substrate arranged on the side edge of the door plate; the turnover driving device comprises a second support fixed on the back of the door plate, a turnover driving motor is arranged on the second support, a turnover driving gear is arranged at the output end of the turnover driving motor, the turnover driving gear is meshed with a turnover driven gear arranged at one end of a turnover shaft, a connecting arm, a movable driven gear and a roller are sequentially sleeved at the other end of the turnover shaft, which penetrates through the rear end of a connecting substrate, the movable driven gear and the roller are of an integrated structure, the movable driven gear is meshed with the movable driving gear, the roller is arranged in a slide rail of a short side, a guide wheel is arranged at the other end of the connecting arm, and the guide wheel is also arranged in the slide rail.
Preferably, the two overturning driving devices are connected and synchronized by an overturning synchronizing shaft; the two movable driving devices are connected and synchronized by a movable synchronizing shaft.
Preferably, the back of the door plate is further provided with a plurality of supporting telescopic rods along the length direction of the door plate, each supporting telescopic rod comprises a connecting rod, the lower ends of the connecting rods are hinged to supporting legs arranged below the long sides, the upper ends of the connecting rods are connected with threaded adjusting rods, adjusting nuts and locking nuts are sleeved at the joints of the connecting rods and the adjusting rods, the other ends of the adjusting rods are hinged to the tops of the door plate, and the supporting legs are connected with the long sides in a welded mode.
Preferably, the door plate is further provided with a latch locking device at one end close to the long edge.
The beneficial effects of the invention are as follows:
first: the guardrail is automatically opened and closed by using an opening and closing driving device;
second,: the door plate automatically moves, turns over and opens and closes by utilizing the cooperation of the moving driving device and the turning driving device;
third,: the door plate and the guardrail are convenient to open and close, impact and noise are avoided in the opening and closing process, the structure is reasonable, the occupied equipment space is small, the processing and manufacturing are simple and convenient, the assembly working hour is small, and the manufacturing cost is low;
fourth,: compared with the conventional side-by-side door technology, the side-by-side door structure and the type of the door plate steel beam can be reduced by adopting the technology, and the height of the door plate after being opened can be reduced to be within the safe hoisting range of 1.1-1.5 meters.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a schematic structural diagram of the opening and closing driving device.
Fig. 3 is a side view of the opening and closing driving device.
Fig. 4 is a top view of the flip drive and the travel drive mated together.
Fig. 5 is a schematic diagram of a cooperation structure of the overturning driving device and the moving driving device.
Fig. 6 is a schematic view of a structure of the cooperation of the overturning driving device and the moving driving device.
Fig. 7 is a side view of a door panel in a closed condition.
Fig. 8 is a side view of a door panel in a semi-open state.
Fig. 9 is a schematic view of a support telescoping rod structure.
In the figure: 10 is an outer frame, 11 is a guardrail, 12 is a door panel, 12.1 is a connection base plate, 13 is a support, 14 is a slide rail, 15 is a bracket, 16 is a support leg, 20 is an opening and closing drive device, 21 is an opening and closing drive gear, 22 is a sector gear, 23 is an opening and closing driven gear, 24 is an opening and closing synchronous shaft, 25 is an opening and closing drive motor, 30 is a movement drive device, 31 is a first support, 32 is a movement drive motor, 33 is a movement drive gear, 34 is a movement driven gear, 35 is a movement synchronous shaft, 40 is a flip drive device, 41 is a second support, 42 is a flip drive motor, 43 is a flip drive gear, 44 is a flip shaft, 45 is a flip driven gear, 46 is a connection arm, 47 is a roller, 48 is a guide wheel, 49 is a flip synchronous shaft, 50 is a support telescopic rod, 51 is a connection rod, 52 is an adjusting lever, 53 is an adjusting nut, 54 is a lock nut, 60 is a latch locking device.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
The utility model provides an electronic flip's hanging hole apron, includes setting up in rectangle hanging hole border and hanging the frame 10 that thing hole shape matches, frame 10 includes two minor faces that set up in opposite directions and two long limits that set up in opposite directions; the two short sides are respectively provided with a retractable guardrail 11 with the same structure; the two long edges are respectively provided with a movable and reversible door plate 12 with the same structure; one end of the guardrail 11 is hinged with a support 13 arranged on the side wall of the short side; a plurality of opening and closing driving devices 20 for driving the guardrails 11 to open and close are further arranged at the hinged positions of the guardrails 11 and the support 13 along the length direction of the guardrails 11; the side wall of the short side is also provided with a sliding rail 14 along the length direction, and the sliding rail 14 is positioned below the support 13; the middle parts of the two sides of the back surface of the door plate 12 are respectively provided with a moving driving device 30 and a turning driving device 40, and the moving driving device 30 is positioned below the turning driving device 40.
Preferably, the opening and closing driving device 20 comprises an opening and closing driving gear 21 and a sector gear 22 arranged at the hinge point of the guardrail 11 and the support 13; an opening and closing driven gear 23 is also arranged between the opening and closing driving gear 21 and the sector gear 22.
Preferably, the plurality of opening and closing driving devices 20 are connected by an opening and closing synchronizing shaft 24; the open-close synchronous shaft 24 is arranged in the center of the open-close driving gear 21 in a penetrating manner, one end or two ends of the open-close synchronous shaft 24 are provided with open-close driving motors 25, the open-close driving motors 25 are arranged on the support 15, and the support 15 can be connected to the short sides.
Preferably, the moving driving device 30 includes a first support 31 fixed on the back of the door panel 12, a moving driving motor 32 is disposed on the first support 31, and an output end of the moving driving motor 32 passes through a rear end portion of a connection substrate 12.1 disposed on a side of the door panel 12 and is provided with a moving driving gear 33; the turnover driving device 40 comprises a second support 41 fixed on the back of the door plate 12, a turnover driving motor 42 is arranged on the second support 41, a turnover driving gear 43 is arranged at the output end of the turnover driving motor 42, the turnover driving gear 43 is meshed with a turnover driven gear 45 arranged at one end of a turnover shaft 44, the other end of the turnover shaft 44 penetrates through the rear end part of the connecting substrate 12.1 to be sequentially sleeved with a connecting arm 46, a movable driven gear 34 and a roller 47, the movable driven gear 34 and the roller 47 are of an integrated structure and rotate simultaneously, the movable driven gear 34 is meshed with the movable driving gear 33, the roller 47 is arranged in a slide rail 14 of a short side, a guide wheel 48 is arranged at the other end of the connecting arm 46, and the guide wheel 48 is also arranged in the slide rail 14.
Preferably, the two overturning driving devices 40 are connected and synchronized by an overturning synchronizing shaft 49; the two movement driving devices 30 are connected and synchronized by a movement synchronizing shaft 35.
Preferably, the back of the door plate 12 is further provided with a plurality of supporting telescopic rods 50 along the length direction of the door plate 12, each supporting telescopic rod 50 comprises a connecting rod 51, the lower ends of the connecting rods 51 are hinged to the supporting legs 16 arranged below the long sides, the upper ends of the connecting rods are connected with threaded adjusting rods 52, the connecting positions of the connecting rods 51 and the adjusting rods 52 are sleeved with adjusting nuts 53 and locking nuts 54, the other ends of the adjusting rods 52 are hinged to the top of the door plate 12, and the supporting legs 16 are connected with the long sides in a welded mode.
Preferably, the end of the door plate 12 near the long side is further provided with a latch locking device 60, the latch locking device 60 can lock the door plate on the outer frame 10 when the door plate 12 is closed in a horizontal state, the latch locking device 60 can realize the functions of latching and locking the door plate by the prior art such as a screw-nut structure, a gear-rack structure and the like, and the functions are not repeated here.
Principle of opening and closing the guardrail:
the opening and closing driving motor 25 is started, and the opening and closing synchronizing shaft 24 drives the opening and closing driving gear 21 to rotate, so that the opening and closing driven gear 23 meshed with the opening and closing driving gear is driven to rotate, and the sector gear 22 is driven to rotate to realize the opening and closing of the guardrail 11.
Principle of moving and overturning door panels:
the movable driving motor 32 is started, the movable driving gear 33 rotates to drive the movable driven gear 34 meshed with the movable driving gear to rotate, and the movable driven gear 34 and the roller 47 are of an integrated structure, so that the roller 47 is driven to move along the slide rail 14, the movement of the door panel 12 is realized, and the movement synchronizing shaft 35 ensures that the two sides of the door panel 12 synchronously move;
turning on the turnover driving motor 42, the turnover driving gear 43 drives the turnover driven gear 45 to rotate, so that the turnover shaft 44 is driven to rotate, and since the idler wheels 47 and the guide wheels 48 are arranged in the slide rail 14, the connecting arms 46 cannot swing along with the turnover shaft 44 in rotation, so that the door plate 12 is provided with reaction force, the door plate 12 turns along with the reaction force, the turnover synchronizing shafts 49 ensure that two sides of the door plate 12 synchronously turn, half of the height of the door plate 12 after the turnover is above a hanging hole, and half of the height of the door plate 12 is below the hanging hole, so that the height of the door plate 12 after the turnover is reduced.
The described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Claims (6)
1. The utility model provides an electronic flip's hanging hole apron, includes setting up in rectangle hanging hole border and hanging the frame (10) that thing hole shape matches, frame (10) include two minor faces that set up in opposite directions and two long limits that set up in opposite directions; the method is characterized in that: the two short sides are respectively provided with a retractable guardrail (11) with the same structure; the two long edges are respectively provided with a movable and reversible door plate (12) with the same structure; one end of the guardrail (11) is hinged with a support (13) arranged on the side wall of the short side; a plurality of opening and closing driving devices (20) for driving the opening and closing of the guardrails (11) are further arranged at the hinge joint of the guardrails (11) and the support (13) along the length direction of the guardrails (11); the side wall of the short side is also provided with a sliding rail (14) along the length direction, and the sliding rail (14) is positioned below the support (13); the middle parts of the two sides of the back surface of the door plate (12) are provided with a moving driving device (30) and a turnover driving device (40), and the moving driving device (30) is positioned below the turnover driving device (40); the movable driving device (30) comprises a first support (31) fixed on the back of the door plate (12), a movable driving motor (32) is arranged on the first support (31), and the output end of the movable driving motor (32) passes through the rear end part of a connecting substrate (12.1) arranged on the side edge of the door plate (12) to be provided with a movable driving gear (33); the turnover driving device (40) comprises a second support (41) fixed on the back of the door plate (12), a turnover driving motor (42) is arranged on the second support (41), a turnover driving gear (43) is arranged at the output end of the turnover driving motor (42), the turnover driving gear (43) is meshed with a turnover driven gear (45) arranged at one end of a turnover shaft (44), a connecting arm (46), a movable driven gear (34) and a roller (47) are sequentially sleeved at the other end of the turnover shaft (44) through the rear end of the connecting substrate (12.1), the movable driven gear (34) and the roller (47) are of an integrated structure, the movable driven gear (34) is meshed with the movable driving gear (33), the roller (47) is arranged in a slide rail (14) of a short side, a guide wheel (48) is arranged at the other end of the connecting arm (46), and the guide wheel (48) is also arranged in the slide rail (14).
2. The suspended solids deck of an electric flip structure as defined in claim 1, wherein: the opening and closing driving device (20) comprises an opening and closing driving gear (21) and a sector gear (22) arranged at the hinging point of the guardrail (11) and the support (13); an opening and closing driven gear (23) is further arranged between the opening and closing driving gear (21) and the sector gear (22).
3. The suspended solids deck of an electric flip structure as claimed in claim 2, wherein: the plurality of opening and closing driving devices (20) are connected by an opening and closing synchronous shaft (24); the opening and closing synchronous shaft (24) is arranged in the center of the opening and closing driving gear (21) in a penetrating mode, one end or two ends of the opening and closing synchronous shaft (24) are provided with opening and closing driving motors (25), and the opening and closing driving motors (25) are arranged on the support (15).
4. The suspended solids deck of an electric flip structure as defined in claim 1, wherein: the two overturning driving devices (40) are connected and synchronized by an overturning synchronizing shaft (49); the two movement driving devices (30) are connected and synchronized by a movement synchronizing shaft (35).
5. The suspended solids deck of an electric flip structure as defined in claim 1, wherein: the utility model discloses a door plant, including door plant (12), door plant (12) back is still set up a plurality of support telescopic links (50) along door plant (12) length direction, support telescopic links (50) include connecting rod (51), connecting rod (51) lower extreme is articulated with supporting leg (16) of setting in the long limit below, and threaded regulation pole (52) are connected to the upper end, adjusting nut (53) and locking nut (54) are established to connecting rod (51) and the junction cover of adjusting pole (52), the other end of adjusting pole (52) is articulated with door plant (12) top, welded connection between supporting leg (16) and the long limit.
6. The suspended solids deck of an electric flip structure as defined in claim 1, wherein: the door plate (12) is provided with a bolt locking device (60) at one end close to the long side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110980064.2A CN113802958B (en) | 2021-08-25 | 2021-08-25 | Electric turnover structure's hanging hole cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110980064.2A CN113802958B (en) | 2021-08-25 | 2021-08-25 | Electric turnover structure's hanging hole cover plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113802958A CN113802958A (en) | 2021-12-17 |
| CN113802958B true CN113802958B (en) | 2023-05-02 |
Family
ID=78894012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110980064.2A Active CN113802958B (en) | 2021-08-25 | 2021-08-25 | Electric turnover structure's hanging hole cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113802958B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES1052859Y (en) * | 2002-09-20 | 2003-06-01 | Electricidad Artzai S L | ACTUATING MECHANISM FOR DOORS AND / OR SLIDING WINDOWS, POOL COVERS OR SIMILAR. |
| US20070261309A1 (en) * | 2006-05-10 | 2007-11-15 | The Stanley Works | Automatic door assembly with telescoping door arm |
| CN101748882B (en) * | 2008-12-04 | 2012-09-05 | 上海太比雅科技有限公司 | Foldable cover plate and foldable guardrail |
| CN103899057B (en) * | 2012-12-25 | 2017-10-10 | 上海太比雅电力设备有限公司 | With the guard bar device of hanging object blind patch synchronous opening/closing |
| CN105298086B (en) * | 2015-11-20 | 2017-06-30 | 江苏广通电力设备有限公司 | Full automatic safety cover plate |
| CN208040212U (en) * | 2018-02-12 | 2018-11-02 | 浙江亚龙教育装备股份有限公司 | A kind of sliding switching mechanism |
-
2021
- 2021-08-25 CN CN202110980064.2A patent/CN113802958B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113802958A (en) | 2021-12-17 |
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