CN112927604B - Elevator fault processing device for security video linkage - Google Patents
Elevator fault processing device for security video linkage Download PDFInfo
- Publication number
- CN112927604B CN112927604B CN202110197572.3A CN202110197572A CN112927604B CN 112927604 B CN112927604 B CN 112927604B CN 202110197572 A CN202110197572 A CN 202110197572A CN 112927604 B CN112927604 B CN 112927604B
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- Prior art keywords
- plate
- elevator
- warning
- hydraulic
- wall body
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
- G09F7/18—Means for attaching signs, plates, panels, or boards to a supporting structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
- G09F7/18—Means for attaching signs, plates, panels, or boards to a supporting structure
- G09F2007/1847—Brackets to grip the sign board
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
- G09F7/18—Means for attaching signs, plates, panels, or boards to a supporting structure
- G09F2007/1856—Means for attaching signs, plates, panels, or boards to a supporting structure characterised by the supporting structure
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Types And Forms Of Lifts (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The application discloses an elevator fault processing device for security video linkage, which comprises an elevator box and an elevator landing door, wherein the left end and the right end of the front side surface of the elevator landing door are both slidably provided with a wall body, the lower end of the right side surface of the wall body is provided with a mounting groove, a warning mechanism is cooperatively arranged in the mounting groove, the front side surface of the wall body is fixedly provided with a controller, the right side surface of the wall body is rotatably provided with a U-shaped shielding plate, the top surface of the U-shaped shielding plate is cooperatively provided with a rotating mechanism, and when abnormal conditions occur, the warning mechanism is pushed out to an elevator opening, so that the situation that a worker repeatedly takes a sign, the load of the worker is reduced, and the situation that someone mistakenly enters an elevator due to the loss of the sign is effectively prevented, thereby being beneficial to actual use; through the setting of first aid storage mechanism, can place elevator first aid equipment in first aid storage mechanism, when meetting emergency, stranded personnel can use according to actual stranded condition.
Description
Technical Field
The application belongs to the technical field of fire-fighting equipment, and particularly relates to an elevator fault processing device for security video linkage.
Background
Elevator refers to a permanent transport device serving a number of specific floors within a building with its car running in at least two columns of rigid rails running perpendicular to the horizontal or inclined at an angle of less than 15 ° to the plumb line. When carrying out timing maintenance and maintenance to the elevator, need at elevator hoistway installation sign, reach the function of warning, prevent someone and go into the elevator in the maintenance by mistake, cause personnel's damage, current sign, need the staff to carry out the manual transfer to the elevator hoistway and place, moreover, the sign is placed in ground only, easily appears the sign and loses or the position movement causes someone to go into the condition of elevator by mistake, is unfavorable for in-service use.
Disclosure of Invention
The application aims to overcome the problems in the prior art and provide the elevator fault processing device for the security video linkage, the warning mechanism is arranged in the wall bodies at the two ends of the elevator opening through the arrangement of the warning mechanism, and the warning mechanism is pushed out to the elevator opening when abnormal conditions occur, so that the situation that a worker repeatedly takes the indication board, the burden of the worker is reduced, the situation that the person mistakenly enters the elevator due to the loss of the indication board can be effectively prevented, and the elevator fault processing device is beneficial to actual use; through the setting of first aid storage mechanism, can place elevator first aid equipment in first aid storage mechanism, when meetting emergency, stranded personnel can use according to actual stranded condition.
In order to achieve the technical purpose and the technical effect, the application is realized by the following technical scheme:
the utility model provides an elevator trouble processing apparatus for security protection video linkage, includes elevator box and elevator layer door, both ends all slidable mounting have the wall body about the elevator layer door leading flank, the mounting groove has been opened to wall body right flank lower extreme, the warning mechanism is installed to the cooperation in the mounting groove, wall body leading flank fixed mounting has the controller, the U type shielding plate is installed in the wall body right flank rotation, rotation mechanism is installed to U type shielding plate top surface cooperation, first aid storage mechanism is installed in the elevator box internal rotation, first aid storage mechanism top surface fixed mounting has supporting baseplate;
the warning mechanism comprises a first warning plate and two symmetrically arranged first hydraulic rods which are arranged on the left side face of the first warning plate in a matching way, one end of each first hydraulic rod, which is far away from the first warning plate, is fixedly arranged in the corresponding mounting groove, and the first hydraulic rods are in signal connection with the controller;
the top surface of the first warning plate is fixedly provided with a first positioning plate, the rear end of the lower bottom surface of the first positioning plate is fixedly provided with a second positioning plate, the front side surface of the second positioning plate is in sliding connection with the rear side surface of the first warning plate, the lower end of the rear side surface of the first warning plate is fixedly provided with an adjusting plate, the center of the top surface of the adjusting plate is fixedly provided with a second hydraulic rod, and the output end of the second hydraulic rod is fixedly connected with the lower bottom surface of the second positioning plate;
the left end and the right end of the top surface of the adjusting plate are fixedly provided with positioning rods, and the left end and the right end of the lower bottom surface of the second positioning plate are provided with positioning grooves matched with the positioning rods.
Further, the first chute is opened to first warning board right flank, sliding mounting has the second warning board in the first chute, second warning board left surface fixed mounting has two third hydraulic stems that the symmetry was set up, the one end fixed mounting that the second warning board was kept away from to the third hydraulic stem is in first chute, two operation grooves that the symmetry was set up are opened at both ends about the first warning board leading flank, operation groove and third hydraulic stem one-to-one, third hydraulic stem and controller signal connection.
Further, a second chute is formed in the right side face of the first positioning plate, a third warning plate is slidably mounted in the second chute, and a U-shaped handle is fixedly mounted on the right side face of the third warning plate.
Further, the rotating mechanism comprises a connecting column and a first conical gear which are fixedly connected from bottom to top, the lower bottom surface of the connecting column is fixedly connected with the rear end of the top surface of the U-shaped shielding plate, the side surface of the first conical gear is connected with a second conical gear in a meshed mode, the front side surface of the second conical gear is fixedly provided with a connecting rotating rod, one end, far away from the second conical gear, of the connecting rotating rod is electrically connected with a rotating motor, a supporting plate is fixedly arranged below the rotating motor, and the left side surface of the supporting plate is fixedly connected with a wall body.
Further, the first-aid storage mechanism comprises a cross-shaped connecting plate, the cross-shaped connecting plate is rotatably arranged at the bottom of the elevator box, a placement area is formed between two adjacent end parts of the cross-shaped connecting plate, and a fan-shaped box body is fixedly arranged in the placement area;
the right lower end of the top surface of the supporting bottom plate is provided with a rectangular groove, and a rectangular baffle plate is slidably arranged in the rectangular groove;
an L-shaped plate is fixedly arranged at the right lower end of the bottom of the elevator box, an adjusting groove is formed in the top surface of the L-shaped plate, a fourth hydraulic rod is installed in the adjusting groove in a matched mode, and the output end of the fourth hydraulic rod is fixedly connected with the lower bottom surface of the rectangular partition plate;
the elevator is characterized in that a threaded hole is fixedly formed in the side face of the left end inside the elevator box, a threaded sleeve is connected in the threaded hole in a threaded mode, a hydraulic switch is arranged in the threaded sleeve and is matched with the threaded hole, and the hydraulic switch is electrically connected with a fourth hydraulic rod.
The beneficial effects of the application are as follows:
1. according to the elevator warning device, the warning mechanism is arranged in the wall bodies at the two ends of the elevator hoistway, and is pushed out to the elevator hoistway when abnormal conditions occur, so that repeated taking of the indication board by a worker is avoided, the burden of the worker is reduced, the situation that a person mistakenly enters the elevator due to loss of the indication board can be effectively prevented, and the elevator warning device is beneficial to actual use.
2. According to the elevator emergency equipment, the emergency storage mechanism is arranged, so that the elevator emergency equipment can be placed in the emergency storage mechanism, and trapped personnel can be used according to actual trapped conditions when emergency situations occur.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present application;
FIG. 2 is a schematic view of a partial structure of the present application;
FIG. 3 is an exploded view of a partial structure of the present application;
FIG. 4 is a schematic view of a partial structure of the present application;
FIG. 5 is an exploded view of a partial structure of the present application;
FIG. 6 is a partial structural bottom view of the present application;
FIG. 7 is an exploded view of a partial structure of the present application;
FIG. 8 is a schematic view of a partial structure of the present application;
FIG. 9 is an exploded view of a partial structure of the present application;
FIG. 10 is a schematic view of a partial structure of the present application;
fig. 11 is an exploded view of a partial structure of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present application and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
The utility model provides an elevator fault handling device for security protection video linkage as shown in fig. 1 through 3, including elevator car 1 and elevator layer door 2, both ends all slidable mounting has wall body 3 about the elevator layer door 2 leading flank, wall body 3 right flank lower extreme is opened there is mounting groove 31, warning mechanism 4 is installed to the interior cooperation of mounting groove 31, wall body 3 leading flank fixed mounting has controller 32, U type shielding plate 33 is installed in wall body 3 right flank rotation, slewing mechanism 34 is installed to U type shielding plate 33 top surface cooperation, first aid storage mechanism 5 is installed in elevator car 1 inside rotation, first aid storage mechanism 5 top surface fixed mounting has supporting baseplate 6.
As shown in fig. 4 to 7, the warning mechanism 4 includes a first warning plate 41 and two first hydraulic rods 42 which are symmetrically arranged and are cooperatively arranged on the left side surface of the first warning plate 41, one end of the first hydraulic rod 42, which is far away from the first warning plate 41, is fixedly arranged in the mounting groove 31, and the first hydraulic rod 42 is in signal connection with the controller 32;
the top surface of the first warning plate 41 is fixedly provided with a first positioning plate 43, the rear end of the lower bottom surface of the first positioning plate 43 is fixedly provided with a second positioning plate 44, the front side surface of the second positioning plate 44 is in sliding connection with the rear side surface of the first warning plate 41, the lower end of the rear side surface of the first warning plate 41 is fixedly provided with an adjusting plate 45, the center of the top surface of the adjusting plate 45 is fixedly provided with a second hydraulic rod 46, the output end of the second hydraulic rod 46 is fixedly connected with the lower bottom surface of the second positioning plate 44, and the first positioning plate 43 is used for ensuring that no deviation occurs in the moving process of the first warning plate 41;
the left and right ends of the top surface of the adjusting plate 45 are fixedly provided with positioning rods 451, and the left and right ends of the lower bottom surface of the second positioning plate 44 are provided with positioning grooves 452 matched with the positioning rods 451;
the right side surface of the first warning plate 41 is provided with a first chute 411, a second warning plate 412 is slidably arranged in the first chute 411, the left side surface of the second warning plate 412 is fixedly provided with two symmetrically arranged third hydraulic rods 413, one end of the third hydraulic rod 413, which is far away from the second warning plate 412, is fixedly arranged in the first chute 411, the upper end and the lower end of the front side surface of the first warning plate 41 are provided with two symmetrically arranged operation grooves 414, the operation grooves 414 are in one-to-one correspondence with the third hydraulic rods 413, and the third hydraulic rods 413 are in signal connection with the controller 32;
the right side surface of the first positioning plate 43 is provided with a second chute 431, a third warning plate 432 is slidably arranged in the second chute 431, and a U-shaped handle 433 is fixedly arranged on the right side surface of the third warning plate 432;
the third warning board 432 is used to raise the height of the warning board.
As shown in fig. 8, the rotating mechanism 34 comprises a connecting column 341 and a first conical gear 342 which are fixedly connected from bottom to top, the lower bottom surface of the connecting column 341 is fixedly connected with the rear end of the top surface of the U-shaped shielding plate 33, the side surface of the first conical gear 342 is in meshed connection with a second conical gear 343, the front side surface of the second conical gear 343 is fixedly provided with a connecting rotating rod 344, one end, far away from the second conical gear 343, of the connecting rotating rod 344 is electrically connected with a rotating motor 345, a supporting plate 346 is fixedly arranged below the rotating motor 345, and the left side surface of the supporting plate 346 is fixedly connected with the wall 3;
through this kind of setting, when abnormal conditions appear, can be earlier by rotating motor 345 with U type shielding plate 33 turn away, start first hydraulic stem 42 again, release first warning board 41, according to elevator landing door size, start third hydraulic stem 413 to confirm the length that second warning board 412 stretches out first spout 411, thereby reach the warning purpose.
As shown in fig. 9 to 11, the first-aid storage mechanism 5 comprises a cross-shaped connecting plate 51, wherein the cross-shaped connecting plate 51 is rotatably arranged at the bottom of the elevator box 1, a placement area 52 is formed between two adjacent ends of the cross-shaped connecting plate 51, and a fan-shaped box 53 is fixedly arranged in the placement area 52;
a rectangular groove 61 is formed in the right lower end of the top surface of the supporting bottom plate 6, and a rectangular partition plate 62 is slidably arranged in the rectangular groove 61;
an L-shaped plate 11 is fixedly arranged at the right lower end of the bottom of the elevator box 1, an adjusting groove 12 is formed in the top surface of the L-shaped plate 11, a fourth hydraulic rod 13 is mounted in the adjusting groove 12 in a matched manner, and the output end of the fourth hydraulic rod 13 is fixedly connected with the lower bottom surface of a rectangular partition plate 62;
a threaded hole 14 is fixedly formed in the side surface of the left end inside the elevator box 1, a threaded sleeve 15 is connected in the threaded hole 14 in a threaded manner, a hydraulic switch 16 is arranged in the threaded sleeve 15, the hydraulic switch 16 is mounted in the threaded hole 14 in a matched manner, and the hydraulic switch 16 is electrically connected with a fourth hydraulic rod 13;
through this setting, when personnel stranded elevator, can unscrew screw sleeve 15, start hydraulic switch 16, fourth hydraulic stem 13 is ejecting rectangular baffle 62, stranded personnel through rotating fan-shaped box 53 to seek suitable emergency equipment.
In this context, the controller 32 is a known conventional electro-hydraulic controller, the rotating motor 345 is a known conventional rotating motor, and the first hydraulic rod 42, the second hydraulic rod 46, the third hydraulic rod 413, and the fourth hydraulic rod 13 are known conventional electro-hydraulic pushrods.
In the actual use process, the warning mechanism 4 is arranged in the wall bodies at the two ends of the elevator hoistway, and when abnormal conditions occur, the warning mechanism 4 is pushed out to the elevator hoistway, so that the situation that a worker repeatedly takes the indication board, the burden of the worker is lightened, and the situation that the person mistakenly enters the elevator due to the loss of the indication board can be effectively prevented, and the actual use is facilitated; through the setting of first aid storage mechanism 5, can place elevator first aid equipment in first aid storage mechanism 5, when meetting emergency, stranded personnel can use according to actual stranded condition.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing has shown and described the basic principles, principal features and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made without departing from the spirit and scope of the application, which is defined in the appended claims.
Claims (1)
1. A elevator trouble processing apparatus for security protection video linkage, its characterized in that: the elevator comprises an elevator box (1) and an elevator landing door (2), wherein the left end and the right end of the front side surface of the elevator landing door (2) are both slidably provided with a wall body (3), the lower end of the right side surface of the wall body (3) is provided with a mounting groove (31), a warning mechanism (4) is mounted in the mounting groove (31) in a matched mode, the front side surface of the wall body (3) is fixedly provided with a controller (32), the right side surface of the wall body (3) is rotatably provided with a U-shaped shielding plate (33), the top surface of the U-shaped shielding plate (33) is matched with a rotating mechanism (34), an emergency storage mechanism (5) is rotatably mounted in the elevator box (1), and a supporting bottom plate (6) is fixedly mounted on the top surface of the emergency storage mechanism (5).
The warning mechanism (4) comprises a first warning plate (41) and two symmetrically arranged first hydraulic rods (42) which are matched and installed on the left side surface of the first warning plate (41), one end, far away from the first warning plate (41), of each first hydraulic rod (42) is fixedly installed in the installation groove (31), and the first hydraulic rods (42) are in signal connection with the controller (32);
the top surface of the first warning plate (41) is fixedly provided with a first positioning plate (43), the rear end of the lower bottom surface of the first positioning plate (43) is fixedly provided with a second positioning plate (44), the front side surface of the second positioning plate (44) is in sliding connection with the rear side surface of the first warning plate (41), the lower end of the rear side surface of the first warning plate (41) is fixedly provided with an adjusting plate (45), the center of the top surface of the adjusting plate (45) is fixedly provided with a second hydraulic rod (46), and the output end of the second hydraulic rod (46) is fixedly connected with the lower bottom surface of the second positioning plate (44);
positioning rods (451) are fixedly arranged at the left end and the right end of the top surface of the adjusting plate (45), and positioning grooves (452) matched with the positioning rods (451) are formed in the left end and the right end of the lower bottom surface of the second positioning plate (44);
the right side of the first warning plate (41) is provided with a first chute (411), a second warning plate (412) is slidably installed in the first chute (411), two symmetrically-arranged third hydraulic rods (413) are fixedly installed on the left side of the second warning plate (412), one end, far away from the second warning plate (412), of each third hydraulic rod (413) is fixedly installed in the first chute (411), two symmetrically-arranged operation grooves (414) are formed in the upper end and the lower end of the front side of the first warning plate (41), the operation grooves (414) correspond to the third hydraulic rods (413) one by one, and the third hydraulic rods (413) are in signal connection with a controller (32);
a second chute (431) is formed in the right side surface of the first positioning plate (43), a third warning plate (432) is slidably mounted in the second chute (431), and a U-shaped handle (433) is fixedly mounted on the right side surface of the third warning plate (432);
the rotating mechanism (34) comprises a connecting column (341) and a first conical gear (342) which are fixedly connected from bottom to top, the lower bottom surface of the connecting column (341) is fixedly connected with the rear end of the top surface of the U-shaped shielding plate (33), the side surface of the first conical gear (342) is connected with a second conical gear (343) in a meshed mode, the front side surface of the second conical gear (343) is fixedly provided with a connecting rotating rod (344), one end, far away from the second conical gear (343), of the connecting rotating rod (344) is electrically connected with a rotating motor (345), a supporting plate (346) is fixedly arranged below the rotating motor (345), and the left side surface of the supporting plate (346) is fixedly connected with the wall body (3);
the first-aid storage mechanism (5) comprises a cross-shaped connecting plate (51), the cross-shaped connecting plate (51) is rotatably arranged at the bottom of the elevator box (1), a placement area (52) is formed between two adjacent end parts of the cross-shaped connecting plate (51), and a fan-shaped box body (53) is fixedly arranged in the placement area (52);
a rectangular groove (61) is formed in the right lower end of the top surface of the supporting bottom plate (6), and a rectangular partition plate (62) is slidably arranged in the rectangular groove (61);
an L-shaped plate (11) is fixedly arranged at the right lower end of the bottom of the elevator box (1), an adjusting groove (12) is formed in the top surface of the L-shaped plate (11), a fourth hydraulic rod (13) is mounted in the adjusting groove (12) in a matched mode, and the output end of the fourth hydraulic rod (13) is fixedly connected with the lower bottom surface of the rectangular partition plate (62);
a threaded hole (14) is fixedly formed in the side surface of the left end inside the elevator box (1), a threaded sleeve (15) is connected in the threaded hole (14) in a threaded mode, a hydraulic switch (16) is arranged in the threaded sleeve (15), the hydraulic switch (16) is installed in the threaded hole (14) in a matched mode, and the hydraulic switch (16) is electrically connected with a fourth hydraulic rod (13);
when a person is trapped in the elevator, unscrewing the threaded sleeve, starting the hydraulic switch, ejecting the rectangular partition plate by the fourth hydraulic rod, and rotating the fan-shaped box body by the trapped person to find out proper first-aid equipment; when abnormal conditions occur, the warning mechanism is pushed out to the elevator hoistway, so that repeated taking of the indication board by a worker is avoided, the burden of the worker is reduced, the situation that someone mistakenly enters the elevator due to loss of the indication board is effectively prevented, and the elevator is beneficial to actual use; through the setting of first aid storage mechanism, place elevator first aid equipment in first aid storage mechanism, when meetting emergency, stranded personnel can use according to actual stranded condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110197572.3A CN112927604B (en) | 2021-02-22 | 2021-02-22 | Elevator fault processing device for security video linkage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110197572.3A CN112927604B (en) | 2021-02-22 | 2021-02-22 | Elevator fault processing device for security video linkage |
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| Publication Number | Publication Date |
|---|---|
| CN112927604A CN112927604A (en) | 2021-06-08 |
| CN112927604B true CN112927604B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110197572.3A Active CN112927604B (en) | 2021-02-22 | 2021-02-22 | Elevator fault processing device for security video linkage |
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| CN209322251U (en) * | 2018-12-25 | 2019-08-30 | 江苏海宁船用器材厂有限公司 | A kind of floating force has by force the escape bridge compartment of rock-steady structure |
| CN210918316U (en) * | 2019-09-28 | 2020-07-03 | 深圳市乐邦电梯有限公司 | Elevator shaft opening safety protection device |
| CN210271622U (en) * | 2019-10-30 | 2020-04-07 | 柳州市工人医院 | Bulletin board for scientific research project management |
| CN211447865U (en) * | 2019-12-24 | 2020-09-08 | 佛山市顺德区新顺诚建筑工程有限公司 | Installation protector that engineering was used is built in room |
| CN211062436U (en) * | 2019-12-27 | 2020-07-21 | 张亚东 | Elevator inspection safety warning device |
| CN111256007A (en) * | 2020-01-15 | 2020-06-09 | 李兆和 | Embedded smart television |
| CN211403991U (en) * | 2020-03-16 | 2020-09-01 | 玉林师范学院 | Agricultural technology education is promoted with propaganda device |
| CN112116884A (en) * | 2020-09-23 | 2020-12-22 | 江苏赛博宇华科技有限公司 | Large-screen liquid crystal display screen convenient to maintain |
| CN112343420A (en) * | 2020-11-19 | 2021-02-09 | 潘长艳 | Road warning protector is used in engineering road construction |
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| CN112927604A (en) | 2021-06-08 |
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