CN115162799B - Pit cover plate device - Google Patents
Pit cover plate device Download PDFInfo
- Publication number
- CN115162799B CN115162799B CN202210803645.3A CN202210803645A CN115162799B CN 115162799 B CN115162799 B CN 115162799B CN 202210803645 A CN202210803645 A CN 202210803645A CN 115162799 B CN115162799 B CN 115162799B
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- CN
- China
- Prior art keywords
- cover plate
- assembly
- pit
- drive
- movable cover
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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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- 230000005540 biological transmission Effects 0.000 claims description 33
- 230000000712 assembly Effects 0.000 claims description 22
- 238000000429 assembly Methods 0.000 claims description 22
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
- E04H5/06—Pits or building structures for inspection or services
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1454—Non-circular covers, e.g. hexagonal, elliptic
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention belongs to the technical field of motor train unit detection, and discloses a pit cover plate device which comprises at least one group of movable cover plate components and movable cover plates. The movable cover plate assembly comprises a movable module, a supporting assembly and a second driving assembly. The mobile module comprises a sliding rail, at least one sliding seat and a first driving assembly, wherein the sliding rail is fixedly arranged at a designated position, the sliding seat is slidably arranged on the sliding rail, and the first driving assembly is configured to drive the sliding seat to move on the sliding rail; the support components are in one-to-one correspondence with the sliding seats, and one end of each support component is rotationally connected with the sliding seat; the second driving component is arranged on the sliding seat and is configured to drive the supporting component to rotate; the movable cover plate is rotationally connected with the other end of the supporting component. According to the pit cover plate device, the labor intensity of workers is reduced and potential safety hazards are eliminated by improving the automation degree of equipment, so that the overhaul efficiency is greatly improved, a channel for overhauling personnel to enter the pit is rapidly provided, and the pit overhaul efficiency is improved.
Description
Technical Field
The invention relates to the technical field of motor train unit detection, in particular to a pit cover plate device.
Background
At present, when the bogie of a motor car section on the market is replaced, a pit cover plate is usually manually disassembled and assembled, and the cover plate on the pit is opened to overhaul equipment or replacement equipment in the pit, but the cover plate is disassembled and assembled by manpower, 3-4 people are needed to cooperate with the equipment, the labor intensity is high, the time consumption is long, the operation efficiency is low, the personnel cost is high, and moreover, because the pit cover plate is large in size and long in storage place, certain potential safety hazards exist when the disassembly and assembly operation is carried out only by manpower.
Accordingly, there is a need for a pit deck assembly that solves the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a pit cover plate device which solves the problems that a cover plate is difficult to open, and the efficiency of manually disassembling and assembling the cover plate is low and unsafe.
To achieve the purpose, the invention adopts the following technical scheme:
a pit deck assembly comprising:
at least one set of removable cover assemblies, the removable cover assemblies comprising:
the mobile module comprises a sliding rail, at least one sliding seat and a first driving assembly, wherein the sliding rail is fixedly arranged at a designated position, the sliding seat is slidably arranged on the sliding rail, and the first driving assembly is configured to drive the sliding seat to move on the sliding rail;
the support components are in one-to-one correspondence with the sliding seats, and one end of each support component is rotationally connected with the sliding seat;
the second driving assembly is mounted on the sliding seat and is configured to drive the supporting assembly to rotate;
and the movable cover plate is rotationally connected with the other end of the supporting component.
As a preferable structure of the invention, the movable cover plate component is provided with two groups, the two groups of movable cover plate components are arranged at intervals and in parallel, and the movable cover plate is rotationally connected with the other ends of the support components of the two groups of movable cover plate components.
As a preferable structure of the invention, two movable cover plates are arranged, four movable cover plate assemblies are arranged, each movable cover plate is connected with two movable cover plate assemblies, the two movable cover plates are arranged in the same row, and one movable cover plate can move in a direction away from the other movable cover plate.
As an optimal structure of the invention, a fixed seat is arranged on one side of the movable cover plate facing the movable module, the fixed seat corresponds to the supporting component one by one, and the other end of the supporting component is rotationally connected with the fixed seat.
As a preferable structure of the invention, the supporting component comprises a telescopic rod, one end of the telescopic rod is rotatably connected with the sliding seat, and the other end of the telescopic rod is rotatably connected with the movable cover plate.
As a preferable structure of the invention, the bottom end of the sliding seat is provided with a pulley, the pulley is in sliding connection with the sliding rail, and the first driving assembly comprises a first driving motor, and the first driving motor is configured to drive the pulley to rotate.
As a preferable structure of the present invention, the first driving assembly includes a first driving link, and the first driving link is connected with the sliding seat to drive the sliding seat to move along the sliding rail.
As a preferable configuration of the present invention, the carriage is provided with a position sensor configured to sense the carriage position information.
As a preferable structure of the invention, the second driving assembly comprises a second driving motor and a transmission assembly, wherein the output end of the second driving motor is connected with the transmission assembly, and the transmission assembly drives the supporting assembly to rotate.
As a preferable structure of the invention, the transmission assembly comprises a transmission belt and a transmission wheel, an output end of the second driving motor is provided with an output wheel, the transmission wheel is connected with the support assembly, and the output wheel is in transmission connection with the transmission wheel through the transmission belt.
The invention has the beneficial effects that:
according to the pit cover plate device disclosed by the invention, the movable cover plate is driven to move through the movable cover plate component, the automation degree of equipment is improved, the labor intensity of workers is reduced, the potential safety hazard is eliminated, the supporting component is driven to rotate through the second driving component, the movable cover plate is wholly lowered, the sliding seat is driven to move along the sliding rail through the first driving component, the movable cover plate is wholly and horizontally moved below the fixed cover plate, the movable cover plate is hidden, the pit opening is opened, the maintenance efficiency is greatly improved, a channel for a maintainer to enter the pit is rapidly provided, and the pit maintenance efficiency is improved.
Drawings
FIG. 1 is a schematic view of a pit deck unit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a pit deck device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a pit deck assembly according to an embodiment of the present invention;
fig. 4 is an enlarged partial schematic view at a in fig. 3.
In the figure:
1. a removable cover assembly; 11. a mobile module; 111. a slide rail; 112. a slide; 1121. a position sensor; 12. a support assembly; 13. a second drive assembly; 131. a second driving motor; 132. a transmission assembly; 1321. a transmission belt; 1322. a driving wheel;
2. a removable cover; 21. a fixing seat;
100. and fixing the cover plate.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be interpreted broadly, as for example, they may be fixedly connected, or may be detachably connected, or may be electrically connected, or may be directly connected, or may be indirectly connected through an intermediary, or may be in communication with one another in two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1-4, the present invention provides a pit deck assembly comprising a removable deck 2 and at least one set of removable deck assemblies 1. The movable cover assembly 1 comprises a movable module 11, a support assembly 12 and a second driving assembly 13. The moving module 11 includes a sliding rail 111, at least one sliding seat 112, and a first driving assembly, in this embodiment, the sliding seats 112 are provided with two sliding seats 112 slidably mounted on the same sliding rail 111, the sliding rail 111 is fixedly mounted at a designated position, and in particular, can be selectively and fixedly mounted at a pit side wall, the first driving assembly is configured to drive the sliding seats 112 to move on the sliding rail 111, and under the driving action of the first driving assembly, the two sliding seats 112 can move on the sliding rail 111 in the same direction; the two support assemblies 12 are in one-to-one correspondence with the sliding seats 112, and two support assemblies 12 are arranged on one sliding seat 112 correspondingly, one end of each support assembly 12 is rotationally connected with the sliding seat 112, and the other end of each support assembly 12 is rotationally connected with the movable cover plate 2; the second driving assembly 13 is mounted on the slide carriage 112, and the second driving assembly 13 is configured to drive the supporting assembly 12 to rotate; the support assembly 12 can synchronously rotate in the same direction under the driving action of the second driving assembly 13.
Specifically, taking fig. 1 as an example, in the initial state, the movable cover 2 is flush with the fixed cover 100 horizontally arranged around, that is, in the closed state, when an overhauling personnel overhauls, the second driving component 13 drives the supporting component 12 to rotate, after the movable cover 2 moves down by a certain height, the first driving component drives the sliding seat 112 to slide on the sliding rail 111, the movable cover 2 can be moved to be hidden under the fixed cover 100, otherwise, when the movable cover is closed, the first driving component is started to drive the sliding seat 112 to move to a proper position, then the second driving component 13 is started to drive the supporting component 12 to rotate and reset, and the movable cover 2 covers the pit again.
Optionally, two groups of movable cover plate assemblies 1 are arranged, the two groups of movable cover plate assemblies 1 are arranged at intervals and in parallel, and the movable cover plate 2 is rotationally connected with the other ends of the support assemblies 12 of the two groups of movable cover plate assemblies 1. In the present embodiment, as shown in fig. 1 and 2, in order to enhance the movement stability of the flap 2, each flap 2 is provided with two sets of flap assemblies 1, which are respectively provided at both ends in the length direction of the flap 2.
Optionally, two movable cover plates 2 are provided, four movable cover plate assemblies 1 are provided, each movable cover plate 2 is connected with two movable cover plate assemblies 1, two movable cover plates 2 are arranged in the same row, and one movable cover plate 2 can move in a direction away from the other movable cover plate 2. The two movable covers 2 in the present embodiment are provided, each movable cover 2 is provided with two sets of movable cover components 1, the two movable covers 2 are arranged in the same row as shown in fig. 1 and 2, when the two movable covers 2 are opened and closed, the movable covers 2 on the left side of fig. 1 move leftwards (the second driving component 13 drives the supporting component 12 to rotate anticlockwise under the driving action of the movable cover components 1, the left movable cover 2 moves leftwards and the first driving component drives the sliding seat 112 to move leftwards) and can be moved and hidden below the left fixed cover 100, as shown in fig. 1; the movable cover plate 2 on the right side of fig. 1 moves rightwards under the driving action of the movable cover plate component 1 (the second driving component 13 drives the supporting component 12 to rotate clockwise, the movable cover plate 2 on the left side moves rightwards and downwards, the first driving component drives the sliding seat 112 to move) and can move and be hidden below the right side fixed cover plate 100, so that double door linkage is realized, and the movable cover plate is suitable for pits with larger opening areas.
Optionally, a fixed seat 21 is disposed on a side of the movable cover 2 facing the movable module 11, the fixed seat 21 corresponds to the support assemblies 12 one by one, and the other end of the support assembly 12 is rotatably connected with the fixed seat 21. As shown in fig. 1, in this embodiment, four fixing seats 21 are disposed on a side of the movable cover 2 facing the movable module 11, and the four fixing seats 21 are correspondingly and rotatably connected to the four supporting components 12 in a one-to-one correspondence manner.
Optionally, a pulley is disposed at the bottom end of the sliding base 112, and the pulley is slidably connected to the sliding rail 111, and the first driving assembly includes a first driving motor configured to drive the pulley to rotate. In one embodiment, as a way of driving the sliding seat 112 by the first driving assembly, a pulley is disposed on the sliding seat 112 and is slidably connected with the sliding rail 111, the first driving assembly includes a first driving motor, and the first driving motor is selectively installed on the sliding seat 112, and drives the pulley to rotate by the first driving motor so as to realize the movement of the sliding seat 112 on the sliding rail 111.
Optionally, the first driving assembly includes a first driving link, where the first driving link is connected to the slide 112, and drives the slide 112 to move along the sliding rail 111. In one embodiment, as another way of driving the sliding seat 112 by the first driving assembly, the first driving assembly includes a first driving link, which may be a hydraulic driving rod, and drives the sliding seat 112 to move on the sliding rail 111 by extending and retracting the hydraulic driving rod.
Optionally, the support assembly 12 comprises a telescopic rod, one end of which is rotatably connected to the slide 112 and the other end of which is rotatably connected to the movable cover plate 2. In this embodiment, the support assembly 12 may be a telescopic rod, specifically a hydraulic telescopic rod, and may be telescopically adjusted, and the length of the hydraulic telescopic rod may be adjusted according to the actual installation requirement, so as to improve the overall installation suitability of the device. It can be appreciated that after the whole installation of the device is completed, the height difference between the movable cover plate 2 and the fixed cover plate 100 may be too large or too small when the movable cover plate 2 is covered due to the too high or too low installation of the movable cover plate 2, so the supporting component 12 is set to be a telescopic rod with telescopic adjustment in this embodiment, the length of the telescopic rod can be adjusted according to the actual assembly requirement, and the whole installation suitability of the device is improved.
Optionally, a position sensor 1121 is provided on the carriage 112, the position sensor 1121 being configured to sense carriage 112 position information. The sliding seat 112 in the embodiment is provided with a position sensor 1121 capable of sensing the position information of the sliding seat 112, and the movable cover 2 can be known to be in an open or closed state by the feedback signal of the position sensor 1121.
Optionally, the second driving assembly 13 includes a second driving motor 131 and a transmission assembly 132, and an output end of the second driving motor 131 is connected to the transmission assembly 132, and drives the support assembly 12 to rotate through the transmission assembly 132. As shown in fig. 4, the second driving motor 131 is connected with the supporting assembly 12 through a transmission assembly 132, more specifically, the transmission assembly 132 includes a transmission belt 1321 and a transmission wheel 1322, an output end of the second driving motor 131 is provided with an output wheel, the transmission wheel 1322 is connected with the supporting assembly 12, and the output wheel and the transmission wheel 1322 are in transmission connection through the transmission belt 1321. The driving belt 1321 in this embodiment may also be a driving chain, and the driving wheel 1322 is a driving sprocket connected to the driving chain, and the driving assembly 132 includes, but is not limited to, the above structural form.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (9)
1. A pit cover plate apparatus, comprising:
at least one set of flap assemblies (1), the flap assemblies (1) comprising:
the mobile module (11), the mobile module (11) comprises a sliding rail (111), at least one sliding seat (112) and a first driving component, the sliding rail (111) is fixedly installed at a designated position, the sliding seat (112) is slidably installed on the sliding rail (111), and the first driving component is configured to drive the sliding seat (112) to move on the sliding rail (111);
the support assemblies (12) are in one-to-one correspondence with the sliding seats (112), and one end of each support assembly (12) is rotationally connected with each sliding seat (112);
a second drive assembly (13) mounted on the carriage (112), the second drive assembly (13) being configured to drive the support assembly (12) in rotation;
the movable cover plate (2) is rotationally connected with the other end of the supporting component (12);
the support assembly (12) comprises a telescopic rod, one end of the telescopic rod is rotationally connected with the sliding seat (112), and the other end of the telescopic rod is rotationally connected with the movable cover plate (2);
in the initial state, removable cover (2) flushes with peripheral fixed apron (100), removable cover (2) closing cap pit, when needs are opened the pit, second drive assembly (13) drive supporting component (12) rotate, removable cover (2) highly descends, first drive assembly drive slide (112) slide rail (111), removable cover (2) by remove hide in fixed apron (100) below this moment, when needs are closed the pit, first drive assembly drive slide (100) remove, then second drive assembly (13) drive supporting component (12) rotate and reset, removable cover (2) closing cap the pit.
2. Pit cover plate device according to claim 1, characterized in that the movable cover plate assembly (1) is provided with two groups, two groups of movable cover plate assemblies (1) are arranged at intervals and in parallel, and the movable cover plate (2) is rotatably connected with the other ends of the support assemblies (12) of the two groups of movable cover plate assemblies (1).
3. Pit cover plate device according to claim 1, characterized in that two removable cover plates (2) are provided, the removable cover plate assembly (1) is provided with four groups, each removable cover plate (2) is correspondingly provided with two groups of removable cover plate assemblies (1) to be connected, two removable cover plates (2) are arranged in the same row, and one removable cover plate (2) can move towards a direction away from the other removable cover plate (2).
4. Pit cover plate device according to claim 1, characterized in that a fixed seat (21) is arranged on one side of the movable cover plate (2) facing the movable module (11), the fixed seats (21) are in one-to-one correspondence with the supporting components (12), and the other end of the supporting component (12) is rotationally connected with the fixed seat (21).
5. The pit deck arrangement of claim 1, wherein the bottom end of the slide (112) is provided with a pulley, which is in sliding connection with the slide rail (111), and the first drive assembly comprises a first drive motor, which is configured to drive the pulley in rotation.
6. Pit cover plate arrangement according to claim 1, characterized in that the first drive assembly comprises a first drive link connected to the slide (112) for driving the slide (112) along the slide rail (111).
7. Pit cover plate arrangement according to claim 1, characterized in that the slide (112) is provided with a position sensor (1121), which position sensor (1121) is configured to sense the slide (112) position information.
8. Pit cover plate arrangement according to claim 1, characterized in that the second drive assembly (13) comprises a second drive motor (131) and a transmission assembly (132), the output end of the second drive motor (131) is connected with the transmission assembly (132), and the support assembly (12) is driven to rotate via the transmission assembly (132).
9. Pit cover plate arrangement according to claim 8, characterized in that the transmission assembly (132) comprises a transmission belt (1321) and a transmission wheel (1322), the output end of the second drive motor (131) is provided with an output wheel, the transmission wheel (1322) is connected with the support assembly (12), and the output wheel and the transmission wheel (1322) are in transmission connection through the transmission belt (1321).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210803645.3A CN115162799B (en) | 2022-07-07 | 2022-07-07 | Pit cover plate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210803645.3A CN115162799B (en) | 2022-07-07 | 2022-07-07 | Pit cover plate device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115162799A CN115162799A (en) | 2022-10-11 |
| CN115162799B true CN115162799B (en) | 2024-04-12 |
Family
ID=83492517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210803645.3A Active CN115162799B (en) | 2022-07-07 | 2022-07-07 | Pit cover plate device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115162799B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2904399A1 (en) * | 1979-02-06 | 1980-08-07 | Daimler Benz Ag | Movable section vehicle inspection pit cover - has plates hinged as roller shutter and movable along guide track |
| CN206784435U (en) * | 2017-06-05 | 2017-12-22 | 中冶华天南京工程技术有限公司 | Pipe gallery dog-house capping apparatus |
| CN207026124U (en) * | 2017-06-19 | 2018-02-23 | 武汉乾冶工程技术有限公司 | A kind of strip-mill strip backup roll change movable telescopic cover board arrangement |
| CN108230884A (en) * | 2016-12-10 | 2018-06-29 | 西安丰登农业科技有限公司 | A kind of movable cover plate for orchard Sign Board |
| CN113737860A (en) * | 2021-09-02 | 2021-12-03 | 安徽送变电工程有限公司 | Cover plate type protection system with detection function for foundation pit |
| CN215165852U (en) * | 2021-04-29 | 2021-12-14 | 江苏电保姆电力服务有限公司 | Drawer type combined cable well cover plate structure with pulleys |
| CN216108630U (en) * | 2021-08-18 | 2022-03-22 | 厦门航天思尔特机器人系统股份公司 | Telescopic protective cover plate |
-
2022
- 2022-07-07 CN CN202210803645.3A patent/CN115162799B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2904399A1 (en) * | 1979-02-06 | 1980-08-07 | Daimler Benz Ag | Movable section vehicle inspection pit cover - has plates hinged as roller shutter and movable along guide track |
| CN108230884A (en) * | 2016-12-10 | 2018-06-29 | 西安丰登农业科技有限公司 | A kind of movable cover plate for orchard Sign Board |
| CN206784435U (en) * | 2017-06-05 | 2017-12-22 | 中冶华天南京工程技术有限公司 | Pipe gallery dog-house capping apparatus |
| CN207026124U (en) * | 2017-06-19 | 2018-02-23 | 武汉乾冶工程技术有限公司 | A kind of strip-mill strip backup roll change movable telescopic cover board arrangement |
| CN215165852U (en) * | 2021-04-29 | 2021-12-14 | 江苏电保姆电力服务有限公司 | Drawer type combined cable well cover plate structure with pulleys |
| CN216108630U (en) * | 2021-08-18 | 2022-03-22 | 厦门航天思尔特机器人系统股份公司 | Telescopic protective cover plate |
| CN113737860A (en) * | 2021-09-02 | 2021-12-03 | 安徽送变电工程有限公司 | Cover plate type protection system with detection function for foundation pit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115162799A (en) | 2022-10-11 |
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