CN114382401A - Water supply security protection cat ladder device based on visual identification system - Google Patents
Water supply security protection cat ladder device based on visual identification system Download PDFInfo
- Publication number
- CN114382401A CN114382401A CN202210051202.3A CN202210051202A CN114382401A CN 114382401 A CN114382401 A CN 114382401A CN 202210051202 A CN202210051202 A CN 202210051202A CN 114382401 A CN114382401 A CN 114382401A
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- Prior art keywords
- ladder stand
- ladder
- electromagnetic actuator
- stand
- water supply
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 230000000007 visual effect Effects 0.000 title claims abstract description 32
- 241000282326 Felis catus Species 0.000 title claims description 71
- 230000010365 information processing Effects 0.000 claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims description 14
- 230000009193 crawling Effects 0.000 description 34
- 230000009194 climbing Effects 0.000 description 10
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/02—Extending means
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/383—Foldable ladders in which the longitudinal members are brought together on folding
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
- E06C7/082—Connections between rungs or treads and longitudinal members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The invention discloses a water supply security and protection ladder stand device based on a visual identification system, which comprises a ladder stand assembly, wherein the ladder stand assembly is provided with an inner ladder stand and an outer ladder stand, a slide way is fixedly arranged on the inner ladder stand, the upper end of the outer ladder stand is connected with the upper end of the inner ladder stand through the slide way, electromagnetic actuators are arranged on the inner side of the upper end of the outer ladder stand and the inner side of the upper end of the inner ladder stand, the electromagnetic actuators can drive the outer ladder stand to slide outwards along the slide way on the inner ladder stand through opening of the electromagnetic actuators, the ladder stand assembly can be opened through outwards sliding, and the electromagnetic actuators can reversely drive the outer ladder stand to slide inwards along the slide way on the inner ladder stand through closing of the electromagnetic actuators, so that the ladder stand assembly can be closed through inwards sliding. The safety protection ladder stand device can instruct the electromagnetic actuator to open or close through the visual identification information processing system component, so that the ladder stand component is opened or closed, further the water tank is overhauled and maintained, or the threat of irrelevant personnel to the water safety in the water tank is avoided, and the safety protection ladder stand device is suitable for being popularized and used as a safety protection ladder stand device matched with water supply equipment.
Description
Technical Field
The invention relates to the technical field of water supply security ladder devices based on a visual identification system, in particular to a water supply security ladder device based on a visual identification system.
Background
The water tank is a common matching device in water supply equipment of a living pump room. The water tank of the water supply equipment stores a large amount of domestic drinking water, and the height of the domestic drinking water is usually more than two meters. The outside of the water tank of a water supply installation will usually be equipped with a ladder climbing device, which exists when in use: on one hand, lawless persons can climb into the water tank through the ladder climbing device without barrier, and the safety of drinking water in water body life in the water tank is threatened; on the other hand, the non-overhead workers can reach the top of the water tank through the ladder stand, and personal safety of the non-overhead workers can be threatened.
Disclosure of Invention
The invention aims to solve the problems existing in the use of a common ladder climbing device for a water tank of water supply equipment. The safety ladder assembly can instruct the electromagnetic actuator to be opened or closed through the visual identification information processing system assembly, so that the ladder assembly is opened or closed, high-altitude workers can climb the water tank of the water supply equipment through the ladder during opening to overhaul and maintain the water tank, and irrelevant personnel and non-high-altitude workers can be prevented from climbing the water tank of the water supply equipment through the ladder during closing, so that the threat to the water safety in the water tank is avoided, the personal safety of the non-high-altitude workers is prevented, and the safety ladder assembly is suitable for being popularized and used as a safety ladder assembly matched with the water supply equipment.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a water supply security protection cat ladder device based on visual identification system, includes the cat ladder subassembly, cat ladder subassembly has interior cat ladder and outer cat ladder, still includes:
the inner ladder stand is fixedly provided with a slide way, the upper end of the outer ladder stand is connected with the upper end of the inner ladder stand through the slide way, the inner side of the upper end of the outer ladder stand and the inner side of the upper end of the inner ladder stand are both provided with an electromagnetic actuator, the electromagnetic actuator on the outer ladder stand can drive the outer ladder stand to slide outwards along the slide way on the inner ladder stand to open the ladder stand assembly through opening of the electromagnetic actuator, and the electromagnetic actuator on the inner ladder stand can reversely drive the outer ladder stand to slide inwards along the slide way on the inner ladder stand to close the ladder stand assembly through closing of the electromagnetic actuator;
the electromagnetic actuator can be connected with the visual identification information processing system assembly through the wire harness, the visual identification information processing system assembly can acquire image information on the ladder stand assembly, the image information can be identified and judged, the electromagnetic actuator is confirmed to be instructed to open or close, so that the ladder stand assembly is opened or closed, the ladder stand assembly can be connected with the water supply equipment water tank, workers can conveniently overhaul, maintain and climb the water supply equipment water tank, and irrelevant personnel can be prevented from threatening the water safety in the water supply equipment water tank.
In order to make outer cat ladder and interior cat ladder link stability good to improve the overall stability and the firm nature of staff climbing cat ladder subassembly, furtherly, outer cat ladder inboard and interior cat ladder inboard are provided with pedal piece, and pedal piece side is linked with outer cat ladder, and pedal piece side is linked with interior cat ladder simultaneously, and pedal piece can be followed outer cat ladder linking department and interior cat ladder linking department and rotated, and pedal piece and linking department enable outer cat ladder and interior cat ladder linking stability good, improve the stability and the firm nature of staff climbing.
In order to when the cat ladder subassembly is closed, make irrelevant personnel and non-high altitude staff can't upwards scramble through footboard spare, outer cat ladder and interior cat ladder, furtherly, electromagnetic actuator closes, electromagnetic actuator drives outer cat ladder along the inside slip of interior cat ladder entablature and closes the cat ladder subassembly in reverse, footboard spare can be followed outer cat ladder linking department and the rotation of interior cat ladder linking department, make the inside cat ladder of outer cat ladder close together, footboard spare incline is erect between outer cat ladder linking department and interior cat ladder linking department, form the upright wall bodily form between footboard spare and outer cat ladder, the interior ladder three, make irrelevant personnel can't upwards scramble through footboard spare, outer cat ladder and interior cat ladder.
In order to realize the acquisition of image information on the crawling ladder assembly and the identification and judgment processing of the image information and ensure that the image information on the crawling ladder assembly can be identified and judged with good stability and consistency and high definition and accuracy, further, the visual identification information processing system assembly is provided with a monitoring camera and a control cabinet connected with the monitoring camera through a wiring harness, a PLC storage control system part is arranged in the control cabinet, the monitoring camera can be connected with the PLC storage control system part through the wiring harness, the monitoring camera can acquire the image information on the crawling ladder assembly and transmit related image information to the PLC storage control system part, and the electromagnetic actuator is connected with the PLC storage control system part through the wiring harness;
the PLC storage control system component can be connected with a display screen of a remote monitoring center through a wire harness or a wireless local area network, the display screen of the remote monitoring center is connected with a corresponding control system, the PLC storage control system component can transmit related image information to the display screen of the remote monitoring center, acquire information for identifying and judging the image information through the corresponding control system and transmit the information for identifying and judging the image information to the electromagnetic actuator,
and then instruct electromagnetic actuator to open or close to make the cat ladder subassembly open or close, ensure to judge that the image information discernment on the cat ladder subassembly is stable uniformity good, and clear degree of accuracy is high.
Compared with the prior art, the invention provides a water supply security ladder device based on a visual identification system, which has the following beneficial effects:
1. according to the water supply security and protection ladder stand device based on the visual identification system, an electromagnetic actuator is instructed to be opened or closed through a visual identification information processing system, the electromagnetic actuator on the inner side of an outer ladder stand is connected with the upper end of an inner ladder stand through a telescopic chain piece, the electromagnetic actuator on the inner side of the inner ladder stand is connected with the upper end of the outer ladder stand through different telescopic chain pieces, through the opening of the electromagnetic actuator, the electromagnetic actuator on the inner side of the inner ladder stand can drive the outer ladder stand to slide outwards along a slide way on the inner ladder stand through the telescopic chain piece to open a ladder stand assembly, when the ladder stand assembly is opened, high-altitude workers can climb a water tank of water supply equipment through the ladder stand to realize the overhaul and maintenance of the water tank; by closing the electromagnetic actuator, the electromagnetic actuator on the inner side of the outer crawling ladder can pass through the corresponding telescopic chain piece, and the electromagnetic actuator can reversely drive the outer crawling ladder to slide inwards along the slide way on the inner crawling ladder to close the crawling ladder assembly, so that irrelevant personnel and non-high-altitude workers are prevented from climbing the water tank of the water supply equipment through the crawling ladder, the threat to the water body safety in the water tank is avoided, and the threat to the personal safety of the non-high-altitude workers is prevented;
2. this water supply security protection cat ladder device based on visual identification system, be provided with the step part through outer cat ladder inboard and interior cat ladder inboard, the step part can be followed outer cat ladder linking department and interior cat ladder linking department and rotated, when the cat ladder subassembly is opened, high altitude staff can pass through the inboard step part of cat ladder, more conveniently scramble the water tank of water supply equipment, when the cat ladder subassembly is closed, can form the upright wall bodily form between step part and outer cat ladder, interior cat ladder three, make irrelevant personnel and non-high altitude staff can't upwards scramble through step part, outer cat ladder and interior cat ladder.
Drawings
Fig. 1 is a schematic front view of a water supply security ladder device based on a visual identification system, when a ladder assembly is opened, the whole water supply security ladder device is shown;
FIG. 2 is a schematic side view of the water supply security ladder device based on the visual identification system, when the ladder assembly is opened, the whole water supply security ladder device is shown;
FIG. 3 is a schematic front view of the water supply security ladder device based on the visual identification system, wherein when the ladder assembly is closed, the ladder device is integrally arranged;
FIG. 4 is a schematic side view of the water supply security ladder device based on the visual identification system, when the ladder assembly is closed, the whole water supply security ladder device is shown;
FIG. 5 is a block diagram of the components of the visual identification information handling system of the present invention;
FIG. 6 is a schematic diagram of the PLC storage control system program logic relationship inside the control system device in the present invention.
In the figure: 1. an inner ladder stand; 2. an outer ladder stand; 3. a step member; 4. a slideway; 5. an electromagnetic actuator; 6. a telescopic chain piece.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being 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 invention.
The present invention will be described in further detail with reference to examples and specific embodiments.
Referring to fig. 1 to 6: the utility model provides a water supply security protection cat ladder device based on visual identification system, includes the cat ladder subassembly, cat ladder subassembly has interior cat ladder 1 and outer cat ladder 2, still includes:
the inner ladder stand 1 is fixedly provided with a slide way 4, the upper end of the outer ladder stand 2 is connected with the upper end of the inner ladder stand 1 through the slide way 4, the inner side of the upper end of the outer ladder stand 2 and the inner side of the upper end of the inner ladder stand 1 are both provided with an electromagnetic actuator 5, meanwhile, the electromagnetic actuator 5 on the inner side of the outer ladder stand 2 is connected with the upper end of the inner ladder stand 1 through a telescopic chain piece 6, the electromagnetic actuator 5 on the inner side of the inner ladder stand 1 is connected with the upper end of the outer ladder stand 2 through different telescopic chain pieces 6, through the opening of the electromagnetic actuator 5, the electromagnetic actuator 5 on the outer ladder stand 2 can drive the outer ladder stand 2 to slide along the slide way 4 on the inner ladder stand 1 and open the ladder stand assembly through the outward sliding, and through the closing of the electromagnetic actuator 5 on the inner ladder stand 1, the electromagnetic actuator 5 on the inner ladder stand 1 can reversely drive the outer ladder stand 2 to slide way on the inner ladder stand 1 and close the ladder stand assembly through the inward sliding;
the electromagnetic actuator 5 can be connected with the visual identification information processing system component through a wire harness, the visual identification information processing system component can acquire image information on the ladder stand component, can identify and judge the image information, and can determine to instruct the electromagnetic actuator 5 to open or close so as to open or close the ladder stand component, the ladder stand component can be connected with the water tank of the water supply equipment, so that workers can conveniently overhaul, maintain and climb the water tank of the water supply equipment, and can avoid the threat of irrelevant personnel to the water safety in the water tank of the water supply equipment;
in order to make outer cat ladder 2 and interior cat ladder 1 link stability good to improve the overall stability and the firm nature of staff climbing cat ladder subassembly, need explain: the pedal parts 3 are arranged on the inner sides of the outer crawling ladder 2 and the inner side of the inner crawling ladder 1, the side surfaces of the pedal parts 3 are connected with the outer crawling ladder 2, meanwhile, the side surfaces of the pedal parts 3 are connected with the inner crawling ladder 1, the pedal parts 3 can rotate along the connecting positions of the outer crawling ladder 2 and the inner crawling ladder 1, the pedal parts 3 and the connecting positions enable the outer crawling ladder 2 and the inner crawling ladder 1 to be good in connecting stability, and the climbing stability and firmness of workers are improved;
in order to make irrelevant personnel and non-high altitude staff unable to climb up through footboard piece 3, outer cat ladder 2 and inner cat ladder 1 when the cat ladder subassembly is closed, need explain: the electromagnetic actuator 5 is closed, the electromagnetic actuator 5 reversely drives the outer crawling ladder 2 to slide inwards along the upper slide way 4 of the inner crawling ladder 1 to close the crawling ladder assembly, the pedal piece 3 can rotate along the linking position of the outer crawling ladder 2 and the linking position of the inner crawling ladder 1, the outer crawling ladder 2 is closed towards the inner crawling ladder 1, the inclined side of the pedal piece 3 is erected between the linking position of the outer crawling ladder 2 and the linking position of the inner crawling ladder 1, a vertical wall body is formed among the pedal piece 3, the outer crawling ladder 2 and the inner crawling ladder 1, and irrelevant personnel cannot climb upwards through the pedal piece 3, the outer crawling ladder 2 and the inner crawling ladder 1;
in order to realize the collection of image information on the cat ladder subassembly to and image information's discernment is judged and is handled, ensure to judge stable uniformity to image information discernment on the cat ladder subassembly good, clear degree of accuracy is high, need explain: the visual identification information processing system component is provided with a monitoring camera and a control cabinet connected with the monitoring camera through a wiring harness, a PLC storage control system component is arranged in the control cabinet, the monitoring camera can be connected with the PLC storage control system component through the wiring harness, the monitoring camera can acquire image information on the ladder stand component and transmit related image information to the PLC storage control system component, and the electromagnetic actuator 5 is connected with the PLC storage control system component through the wiring harness;
the PLC storage control system component can be connected with a display screen of a remote monitoring center through a wire harness or a wireless local area network, the display screen of the remote monitoring center is connected with a corresponding control system, the PLC storage control system component can transmit related image information to the display screen of the remote monitoring center, acquire information for identifying and judging the image information through the corresponding control system and transmit the information for identifying and judging the image information to the electromagnetic actuator 5,
and then instruct electromagnetic actuator 5 to open or close to make the cat ladder subassembly open or close, ensure to judge that the image information discernment on the cat ladder subassembly is stable uniformity good, and clear degree of accuracy is high.
The use method of the device comprises the following steps:
the method comprises the following steps: the acquired image information is input into a PLC storage control system component through a monitoring camera of the visual recognition equipment, the PLC storage control system component transmits the acquired image information to a remote monitoring center display screen in a management center, and meanwhile, a control system program in the PLC storage control system component carries out image analysis and recognition on the input acquired image information;
step two: the PLC storage control system connected with a display screen of a remote monitoring center in the management center analyzes and identifies the image information, when the image information does not meet the requirement, the electromagnetic actuator 5 is closed to prohibit starting, and acquires the acquired image information through the monitoring camera again, and when the image information meets the requirement;
step three: the electromagnetic actuator 5 is opened, and through the opening of the electromagnetic actuator 5, the electromagnetic actuator 5 on the outer crawling ladder 2 can drive the outer crawling ladder 2 to slide outwards along the slide way 4 on the inner crawling ladder 1 to open the crawling ladder assembly, so that high-altitude workers can overhaul and maintain the water tank of the water supply equipment through the opened crawling ladder assembly to ensure that the climbing is convenient;
step four: after the high altitude staff used up the closure, the image information that the surveillance camera head will acquire the collection transmits PLC storage control system spare, PLC storage control system spare instruction electromagnetic actuator 5 closes, electromagnetic actuator 5 on the interior ladder 1 can reverse drive outer cat ladder 2 along the slide on the interior ladder 1, the cat ladder subassembly is closed in the inside slip, make irrelevant personnel can't upwards scramble through footboard piece 3, and including the cat ladder subassembly of outer cat ladder 2 and interior ladder 1, electromagnetic actuator 5 automatic locking simultaneously.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (4)
1. The utility model provides a water supply security protection cat ladder device based on visual identification system, includes the cat ladder subassembly, cat ladder subassembly has interior cat ladder and outer cat ladder, its characterized in that still includes:
the inner ladder stand is fixedly provided with a slide way, the upper end of the outer ladder stand is connected with the upper end of the inner ladder stand through the slide way, the inner side of the upper end of the outer ladder stand and the inner side of the upper end of the inner ladder stand are both provided with an electromagnetic actuator, the electromagnetic actuator on the outer ladder stand can drive the outer ladder stand to slide outwards along the slide way on the inner ladder stand to open the ladder stand assembly through opening of the electromagnetic actuator, and the electromagnetic actuator on the inner ladder stand can reversely drive the outer ladder stand to slide inwards along the slide way on the inner ladder stand to close the ladder stand assembly through closing of the electromagnetic actuator;
the electromagnetic actuator can be connected with the visual identification information processing system assembly through the wire harness, the visual identification information processing system assembly can acquire image information on the ladder stand assembly, the image information can be identified and judged, the electromagnetic actuator is confirmed to be instructed to open or close, so that the ladder stand assembly is opened or closed, the ladder stand assembly can be connected with the water supply equipment water tank, workers can conveniently overhaul, maintain and climb the water supply equipment water tank, and irrelevant personnel can be prevented from threatening the water safety in the water supply equipment water tank.
2. The water supply security ladder device based on the visual identification system as claimed in claim 1, wherein a pedal member is arranged on the inner side of the outer ladder and the inner side of the inner ladder, the side surface of the pedal member is linked with the outer ladder, the side surface of the pedal member is linked with the inner ladder, the pedal member can rotate along the linking position of the outer ladder and the linking position of the inner ladder, and the pedal member and the linking position can ensure that the outer ladder and the inner ladder are good in linking stability.
3. The water supply security and protection ladder stand device based on the visual identification system as claimed in claim 1, wherein the electromagnetic actuator is closed, the electromagnetic actuator drives the outer ladder stand to slide inwards along the slide way on the inner ladder in a reverse direction to close the ladder stand assembly, the pedal member can rotate along the linking place of the outer ladder stand and the linking place of the inner ladder stand to close the inner ladder stand of the outer ladder stand, the inclined side of the pedal member is erected between the linking place of the outer ladder stand and the linking place of the inner ladder stand, and a vertical wall body is formed between the pedal member and the three of the outer ladder stand and the inner ladder stand, so that irrelevant personnel can not climb upwards through the pedal member, the outer ladder stand and the inner ladder stand.
4. The water supply security ladder device based on the visual identification system as claimed in claim 1, wherein the visual identification information processing system component comprises a monitoring camera and a control cabinet connected with the monitoring camera through a wiring harness, a PLC storage control system component is arranged in the control cabinet, the monitoring camera can be connected with the PLC storage control system component through the wiring harness, the monitoring camera can acquire image information on the ladder component and transmit related image information to the PLC storage control system component, and the electromagnetic actuator is connected with the PLC storage control system component through the wiring harness;
the PLC storage control system component can be connected with a display screen of a remote monitoring center through a wire harness or a wireless local area network, the display screen of the remote monitoring center is connected with a corresponding control system, the PLC storage control system component can transmit related image information to the display screen of the remote monitoring center, acquire information for identifying and judging the image information through the corresponding control system and transmit the information for identifying and judging the image information to the electromagnetic actuator,
and then the electromagnetic actuator is commanded to open or close, so that the ladder stand component is opened or closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210051202.3A CN114382401B (en) | 2022-01-17 | 2022-01-17 | Water supply security protection cat ladder device based on visual identification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210051202.3A CN114382401B (en) | 2022-01-17 | 2022-01-17 | Water supply security protection cat ladder device based on visual identification system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114382401A true CN114382401A (en) | 2022-04-22 |
| CN114382401B CN114382401B (en) | 2024-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210051202.3A Active CN114382401B (en) | 2022-01-17 | 2022-01-17 | Water supply security protection cat ladder device based on visual identification system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB216039A (en) * | 1923-10-06 | 1924-05-22 | Alfred Benjamin Davis | Improvements in ladders |
| US1887301A (en) * | 1931-03-25 | 1932-11-08 | Mack Atkins | Berth ladder for sleeping cars |
| US6401861B1 (en) * | 2000-07-06 | 2002-06-11 | Great Lakes Construction Services | Adjustable floating ladder for loading a dumpster |
| KR101681032B1 (en) * | 2015-12-24 | 2016-12-13 | 이에스테크 주식회사 | Refuge management system using the refuge ladder |
| CN110578463A (en) * | 2019-09-29 | 2019-12-17 | 徐工集团工程机械股份有限公司科技分公司 | foldable engineering machinery ladder stand |
| CN210083074U (en) * | 2019-04-15 | 2020-02-18 | 南京海格专用车技术有限公司 | Outside hidden folding stair for car as a house |
| CN217380386U (en) * | 2022-01-17 | 2022-09-06 | 安徽舜禹水务股份有限公司 | Water supply security protection cat ladder device based on visual identification system |
-
2022
- 2022-01-17 CN CN202210051202.3A patent/CN114382401B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB216039A (en) * | 1923-10-06 | 1924-05-22 | Alfred Benjamin Davis | Improvements in ladders |
| US1887301A (en) * | 1931-03-25 | 1932-11-08 | Mack Atkins | Berth ladder for sleeping cars |
| US6401861B1 (en) * | 2000-07-06 | 2002-06-11 | Great Lakes Construction Services | Adjustable floating ladder for loading a dumpster |
| KR101681032B1 (en) * | 2015-12-24 | 2016-12-13 | 이에스테크 주식회사 | Refuge management system using the refuge ladder |
| CN210083074U (en) * | 2019-04-15 | 2020-02-18 | 南京海格专用车技术有限公司 | Outside hidden folding stair for car as a house |
| CN110578463A (en) * | 2019-09-29 | 2019-12-17 | 徐工集团工程机械股份有限公司科技分公司 | foldable engineering machinery ladder stand |
| CN217380386U (en) * | 2022-01-17 | 2022-09-06 | 安徽舜禹水务股份有限公司 | Water supply security protection cat ladder device based on visual identification system |
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| Publication number | Publication date |
|---|---|
| CN114382401B (en) | 2024-07-02 |
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