CN114855698B - Water retaining device for placing on rail and application method thereof - Google Patents

Water retaining device for placing on rail and application method thereof Download PDF

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Publication number
CN114855698B
CN114855698B CN202210686748.6A CN202210686748A CN114855698B CN 114855698 B CN114855698 B CN 114855698B CN 202210686748 A CN202210686748 A CN 202210686748A CN 114855698 B CN114855698 B CN 114855698B
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China
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water
rail
clamping plate
groove
deflector
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CN202210686748.6A
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Chinese (zh)
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CN114855698A (en
Inventor
孙静雯
黄凯良
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Shenyang Jianzhu University
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Shenyang Jianzhu University
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/10Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B26/00Tracks or track components not covered by any one of the preceding groups
    • E01B26/005Means for fixing posts, barriers, fences or the like to rails
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/10Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
    • E02B3/106Temporary dykes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Special Wing (AREA)
  • Revetment (AREA)

Abstract

The invention relates to a rain water backflow preventing water retaining device for subway exit and entrance sections and a use method thereof, and belongs to the technical field of flood control. The device can be placed on the rail of current subway access field section, and installs rapidly, can block outside rivers entering subway inside through the breakwater and with rail phase connection grip block.

Description

Water retaining device for placing on rail and application method thereof
Technical Field
The invention belongs to the technical field of flood control, and particularly relates to a water retaining device for being placed on a rail and a using method thereof.
Background
When a storm flood disaster occurs, the section of the subway exit and entrance can generate the condition of rainwater backflow, and the operation safety of the subway is affected.
At present, two modes of rainwater backflow are mainly adopted, the first mode is that a fixed or assembled water baffle is arranged at an inlet of an underground space, but a subway entrance-exit line section is complex in structure, structures such as rails and sleepers are arranged, and at present, no water baffle device capable of being directly used for the subway entrance-exit line section exists; the second is to arrange a flood control sand bag on the line section of the subway entrance and exit, which consumes a great deal of manpower and material resources, and has low efficiency, and the sand bag is difficult to fill closely near structures such as rails, and the water retaining effect is limited.
However, in patent CN 202111003693.6, a special flood control device for a track area is disclosed, which comprises a first water retaining wall, a second water retaining wall and a third water retaining wall, wherein the first water retaining wall, the second water retaining wall and the first water retaining wall and the third water retaining wall are respectively and vertically fixed on the ground foundation on the left side, the middle side and the right side of the track area, a certain distance is kept between the second water retaining wall and the first water retaining wall and the third water retaining wall, and the first water retaining wall and the third water retaining wall are respectively connected with retaining walls on the left side and the right side of the track area; two groups of water retaining beams are respectively and fixedly arranged on two track beds in a track area, and gaps are reserved at two track positions of the track beds by each group of water retaining beams, wherein two end parts of one group of water retaining beams are respectively connected with a first water retaining wall and a second water retaining wall into a whole, and two end parts of the other group of water retaining beams are respectively connected with a second water retaining wall and a third water retaining wall into a whole; two water baffles, one of which is arranged between the first water baffle wall and the second water baffle wall, the other of which is arranged between the second water baffle wall and the third water baffle wall, the bottom of each water baffle contacts with the top surface of a corresponding group of water baffle beams, and a U-shaped stop block which is hung downwards is arranged, and the U-shaped stop block is inserted into the reserved gap; the U-shaped baffle is arranged for the rail area, but cannot be completely attached to the rail, so that the water retaining effect is poor; the first, second and third water retaining walls adopt concrete structures, so that the firmness is enhanced, but the structures occupy a large amount of space, and the track area is limited.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a water blocking device for being placed on a rail and a using method thereof.
The embodiment of the invention provides a water retaining device for placing on a rail, which comprises a water retaining wall formed by splicing a plurality of sections of water retaining plates and fixing columns, wherein the fixing columns are provided with vertical grooves for placing the water retaining plates, the fixing columns are arranged on two sides of the rail, the bottom edge of the bottom water retaining plate in the water retaining wall is provided with grooves which extend upwards and can accommodate the rail, a first clamping plate and a second clamping plate are arranged in the grooves, and the first clamping plate and the second clamping plate can move in opposite directions to clamp and wrap the rail and are tightly attached to the outer surface of the rail after clamping.
Further, the both sides of recess are equipped with horizontal spout on the bottom breakwater, and first grip block and second grip block pass through the retaining member and install in the horizontal spout, when first grip block and second grip block with rail centre gripping parcel, can be fixed the grip block through the retaining member.
Further, the first clamping plate and the second clamping plate are embedded into the water baffle, and the water baffle can slide in the clamping plates.
Further, the top is equipped with the casting die in the vertical inslot, the casting die is connected with the fixed column can be dismantled, and the bottom of casting die is connected with the top layer breakwater in the water retaining wall through elastic expansion piece.
Further, a lock hole is formed in the vertical groove, a locking piece capable of being clamped into the lock hole is arranged on the pressing piece, a fixing hole for accommodating the lock hole is formed in the pressing piece, a compression spring is arranged in the fixing hole, one end of the compression spring is connected with the locking piece, and the other end of the compression spring is connected with the bottom surface of the fixing hole.
Further, the edge of the first clamping plate is provided with a first special-shaped groove, the edge of the second clamping plate is provided with a second special-shaped groove, and when the first clamping plate and the second clamping plate are in butt joint, the first special-shaped groove and the second special-shaped groove are spliced to form the same shape as the section of the rail.
Further, the top of the water baffle is provided with a bulge, and other water baffles except the water baffle at the bottommost part are provided with clamping grooves capable of accommodating the bulge.
Further, a waterproof sealing gasket is arranged between two adjacent water baffles.
Further, the front side plate and the rear side plate of the water baffle are connected through longitudinal and transverse stiffening ribs.
The embodiment of the invention provides a using method of a water blocking device for being placed on a rail based on any one of the above, which comprises the following steps:
placing the fixed columns on two sides of a rail, inserting the bottom water baffle into the vertical grooves of the fixed columns, and ensuring that the guide rail is clamped in the grooves of the bottom water baffle;
moving the first clamping plate and the second clamping plate to ensure that the two clamping plates wrap the rail and simultaneously the two clamping plates are provided for the fixing column;
after the bottom water baffle is fixed, the water baffle is gradually placed in the vertical groove of the fixed column, so that a water baffle wall is formed.
The beneficial effects of the invention are as follows:
the water retaining device provided by the invention can be used for placing the water retaining wall at the entrance section of a subway and can be directly placed on the rail, when the bottom water retaining plate is placed on the rail, the rail can be clamped in the groove of the bottom water retaining plate, and meanwhile, the rail is clamped and wrapped through the first clamping plate and the second clamping plate of the groove, so that water flow can be prevented from flowing in from a gap between two rails and water flow can be prevented from flowing in from a gap between the groove and the rail.
Drawings
FIG. 1 is a schematic view of the overall structure of a water deflector for placement on a rail according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a water baffle in the water baffle device according to the embodiment of the present invention;
fig. 3 is a schematic view of an internal structure of a water baffle in the water baffle device according to the embodiment of the present invention;
FIG. 4 is an enlarged schematic view of the portion B of the water deflector of FIG. 1;
fig. 5 is an enlarged schematic view of the portion a of the water deflector of fig. 1.
In the figure: 1. the water retaining wall, 2, the ground, 3, vertical groove, 4, top layer breakwater, 5, middle breakwater, 6, bottom breakwater, 7, grip block, 8, retaining member, 9, rail, 10, horizontal chute, 11, rectangular groove, 12, rectangular bulge, 13, waterproof pad, 14, vertical and horizontal stiffening rib, 15, T type casting die, 16, locking piece, 17, fixed block, 18, second spring, 19, first spring, 20, lockhole.
Detailed Description
As shown in fig. 1, the embodiment of the invention provides a water deflector device placed on a rail, which mainly comprises a water wall 1 placed on a rail 9, wherein the water wall 1 mainly comprises a top water deflector 4, a middle water deflector 5 and a bottom water deflector 6.
The subway entrance is characterized in that fixed columns are arranged on two sides of the subway entrance and between two groups of rails, vertical grooves 3 are formed in the fixed columns, two ends of a water baffle are inserted into the vertical grooves 3 between two adjacent fixed columns, when the subway entrance is not rained, the water baffle can be pulled out of the vertical grooves 3 of the fixed columns, the running of a train is not affected, and when the subway is rained, the water baffle is directly inserted into the vertical grooves 3 of the fixed columns, so that the quick installation of the water baffle can be realized.
In this embodiment, the bottom edge of the bottom water baffle 6 is provided with at least two grooves capable of placing the rails 9, and the grooves extend upwards, so that when the bottom water baffle 6 is placed on the rails 9, the bottom surface of the bottom water baffle 6 can be contacted with the ground, and meanwhile, the rails 9 can be clamped into the grooves, so that water flow can be prevented from passing through the gaps between two adjacent rails 9.
Further, a pair of first clamping plates and second clamping plates which can move and wrap the rail 9 are arranged in the groove of the bottom water baffle 6, the first clamping plates and the second clamping plates can move in opposite directions on the bottom water baffle 6, when the two clamping plates 7 move to the rail 9, the rail 9 can be just clamped into a special-shaped groove at the edge of the clamping plate 7, so that the clamping plates 7 can be tightly attached, and water flow can be prevented from flowing in the groove on the bottom water baffle 6.
Specifically, as shown in fig. 1, 2 and 3, the water baffle in this embodiment is mainly a rectangular plate member, and is not a solid member, wherein the front panel and the rear panel of the water baffle are connected by longitudinal and transverse stiffening ribs 14, and the rest is hollow, so that the weight of the whole water baffle can be reduced.
The material of the water baffle can be a common aluminum alloy water baffle or a stainless steel water baffle.
The upper surface intermediate position of every breakwater is equipped with a rectangle arch 12, simultaneously except bottom breakwater 6, and remaining breakwater bottom surface is equipped with one and holds rectangle protruding 12's rectangle recess 11, like this when adjacent breakwater splice each other, can realize the quick butt joint location of both through rectangle arch 12 and rectangle recess 11.
In this embodiment, the surface where two adjacent water baffles are butted is provided with a waterproof pad 13, so that water can flow out through the gap between the two water baffles.
Wherein waterproof pad 13 of bottom manger plate 6 bottom surface can be thicker, and waterproof pad 13 pliability on this layer is better, because the manger plate of bottom is with the ground between two guide rails contact, this ground probably has the rugged situation, can guarantee the inseparable laminating with ground through waterproof pad 13 of bottom manger plate 6.
In addition to the bottom water deflector 6, the outer surface of the rectangular bulge 12 at the top of the rest water deflector or the inner wall surface of the rectangular groove 11 at the bottom are also provided with waterproof pads 13, or both, so that a sealing connection between the two water deflectors is achieved.
Furthermore, can also set up the one deck breakwater on the two vertical groove 3 internal surfaces of fixed column, guarantee the leakproofness between breakwater and the vertical recess.
It should be noted that, in this embodiment, the waterproof pad 13 may be a sealing pad capable of swelling when absorbing water, so that the thickness of the waterproof pad 13 can be increased by absorbing water, and the tightness between the waterproof pad and the surface of the baffle or the inner wall surface of the groove can be ensured.
As shown in fig. 4, in this embodiment, clamping plates 7 for clamping the rail 9 are provided on both sides of the bottom groove of the bottom water deflector 6, wherein the clamping plates 7 are embedded in the bottom water deflector 6 and can slide inside.
As a person skilled in the art, a space for specially placing the waterproof board may be provided inside the clamping board 7, the clamping board 7 may slide in the space, and the sealing between the clamping board 7 and the waterproof board may be ensured, and the waterproof pad 13 may be provided on the surface of the clamping board 7, which is attached to the waterproof board.
Of course, in other embodiments, the clip plate 7 may be provided on the front surface of the splash plate, for example with a guide groove on the surface of the front splash plate, the baffle sliding within the guide groove to wrap the rail 9 around the clip.
In order to fix the clamping plate 7, as shown in fig. 1 and 4, two sides of the bottom water baffle 6 provided with grooves are provided with a section of horizontal sliding groove 10, the horizontal sliding groove 10 penetrates through the front and rear surfaces of the bottom water baffle 6, and meanwhile, the clamping plate 7 is also provided with a section of clamping plate fixing groove corresponding to the horizontal sliding groove.
Further, the clamping plate 7 is connected with the bottom water baffle 6 through a locking member 8, the fastening member passes through a horizontal chute on the bottom water baffle 6 and a clamping plate fixing slot on the clamping plate 7 to fix the two columns, for example, the locking member 8 can be a common fastening bolt, and when the clamping plate 7 clamps the rail 9, the clamping plate 7 and the bottom water baffle 6 are fixed by tightening a nut on the fastening bolt.
Referring to fig. 4, the edge of the clamping plate 7 abutting against the rail 9 is provided with a special-shaped groove, the special-shaped groove is a half-i-shaped groove, and when the two clamping plates 7 wrap the rail 9, the special-shaped grooves on the two clamping plates 7 can just in time be spliced into the cross-section shape of the i-shaped rail 9, so that the rail 9 can be completely wrapped.
It should be noted that the shape of the special-shaped groove at the upper edge of the clamping plate 7 is not limited to the semi-i-shaped groove in this embodiment, but may be other shapes, which need to be determined according to the shape of the rail 9,
in order to ensure the tightness of the engagement of the clamping plate 7 with the rail 9, a waterproof pad 13 may also be provided on the edge of the clamping plate 7.
Referring to fig. 5, in this embodiment, a T-shaped pressing member 15 is disposed at the top in a vertical groove on the fixing column, wherein the bottom of the T-shaped pressing member 15 is embedded into the vertical groove 3 of the fixing column, and the bottom of the T-shaped pressing member 15 contacts with the upper surface of the top water baffle 4 through a first spring 19 and a fixing block 17, so that the pressure is transmitted to each water baffle by applying the downward pressure to the top water baffle 4, and the waterproof pad 13 between two adjacent water baffles is pressed, thereby further improving the tightness of the two water baffles.
In order to realize the detachable connection between the T-shaped pressing member 15 and the vertical groove 3, as shown in fig. 5, a locking hole 20 may be disposed on the front side or the rear side and the right side surface of the vertical groove 3, a locking piece 16 is disposed on the T-shaped pressing member 15, meanwhile, a locking hole 20 capable of placing the locking piece 16 is disposed on the T-shaped pressing member 15, a second spring 18 is disposed in the locking hole 20, wherein one end of the second spring 18 is connected with the locking piece 16, and the other end is in contact with the bottom surface in the through hole, so that when the T-shaped pressing member 15 is inserted into the vertical groove 3, the locking piece 16 is inserted into the locking hole 20 under the elastic action of the second spring 18 to realize the fixation of the T-shaped pressing member 15.
Of course, the detachable connection mode of the T-shaped pressing member 15 and the vertical groove 3 is not limited to the mode of the locking piece 16 and the locking hole 20 in this example, and other modes may be adopted, for example, an interval is provided on the outer surface of the vertical groove 3, and meanwhile, a jack is also provided on the T-shaped pressing member 15, when the T-shaped pressing member 15 presses down the first spring 18, and when the jack on the T-shaped pressing member 15 is coaxial with the jack on the vertical groove 3, the jack on the T-shaped pressing member 15 and the jack on the vertical groove 3 may be inserted through the positioning pin, so as to fix the two.
The following describes in detail the method of use of the water deflector on the basis of the placement on the rail 9:
two sides of a rail 9 at an entrance section of the subway are respectively provided with a fixed column, and a vertical groove 3 is machined in the fixed column in advance;
firstly, the bottom water baffle 6 is installed, the bottom water baffle 6 is inserted into the vertical groove 3 of the fixed column, the rail 9 is ensured to be clamped into the groove on the bottom water baffle 6, after the bottom water baffle 6 is placed, the clamping plate 7 on the bottom water baffle 6 is moved, the rail 9 is clamped, and the clamping plate 7 is clamped to the fixed column through the locking piece 8 on the clamping plate 7.
After the bottom water baffle 6 is fixed, the middle water baffle 5 and the top water baffle 4 are sequentially placed, and after the top water baffle 4 is placed, the T-shaped pressing piece 15 is inserted into the vertical groove 3 and is fixed.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.

Claims (8)

1. The water retaining device for placing on the rail is characterized by comprising a water retaining wall formed by splicing a plurality of sections of water retaining plates and fixing columns, wherein the fixing columns are arranged at two sides and the middle position of the rail in a track area, the end parts of the water retaining wall are inserted on the fixing columns, the bottom edge of the bottom water retaining plate in the water retaining wall is provided with a groove which extends upwards and can accommodate the rail, a first clamping plate and a second clamping plate are arranged in the groove, and the first clamping plate and the second clamping plate can move in opposite directions to clamp and wrap the rail and are tightly attached to the outer surface of the rail after being clamped;
the top in the vertical groove is provided with a pressing piece which is detachably connected with the fixed column, and the bottom of the pressing piece is connected with a top water baffle in the water baffle wall through an elastic telescopic piece;
the vertical groove is provided with a lock hole, the pressing piece is provided with a locking piece capable of being clamped into the lock hole, the pressing piece is provided with a fixing hole for accommodating the locking piece, the fixing hole is provided with a compression spring, one end of the compression spring is connected with the locking piece, and the other end of the compression spring is connected with the bottom surface of the fixing hole.
2. The water blocking device for placing on a rail according to claim 1, wherein horizontal sliding grooves are formed in two sides of the groove in the lower water blocking plate, the first clamping plate and the second clamping plate are installed in the horizontal sliding grooves through locking pieces, and when the first clamping plate and the second clamping plate clamp the rail to wrap the rail, the clamping plates can be fixed through the locking pieces.
3. A water deflector for placement on a rail as claimed in claim 2, wherein the first and second clip panels are each embedded within the water deflector, the clip panels being capable of sliding within the water deflector.
4. The water deflector for placement on rails of claim 1 wherein the edge of the first clamping plate is provided with a first profiled groove and the edge of the second clamping plate is provided with a second profiled groove, the first profiled groove and the second profiled groove being spliced to form the same shape as the cross-sectional shape of the rail when the first clamping plate and the second clamping plate are in abutting engagement.
5. A water deflector for placement on a rail as claimed in claim 1, wherein the top of the water deflector is provided with a projection and the rest of the water deflector bottoms are provided with a catch which is able to receive the projection, except for the bottommost water deflector.
6. A water deflector for placement on a rail as claimed in claim 5, wherein a water-tight seal is provided between two adjacent water deflector plates.
7. A water deflector for placement on rails as in any of claims 1-6 wherein the front and rear side panels of the water deflector are connected by longitudinal and transverse stiffeners.
8. A method of using a water deflector for placement on rails, according to any of claims 1-6,
placing the fixed columns on two sides of a rail, inserting the bottom water baffle into the vertical grooves of the fixed columns, and ensuring that the guide rail is clamped in the grooves of the bottom water baffle;
moving the first clamping plate and the second clamping plate to ensure that the two clamping plates wrap the rail and simultaneously the two clamping plates are provided for the fixing column;
after the bottom water baffle is fixed, the water baffle is gradually placed in the vertical groove of the fixed column, so that a water baffle wall is formed.
CN202210686748.6A 2022-06-17 2022-06-17 Water retaining device for placing on rail and application method thereof Active CN114855698B (en)

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Application Number Priority Date Filing Date Title
CN202210686748.6A CN114855698B (en) 2022-06-17 2022-06-17 Water retaining device for placing on rail and application method thereof

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Application Number Priority Date Filing Date Title
CN202210686748.6A CN114855698B (en) 2022-06-17 2022-06-17 Water retaining device for placing on rail and application method thereof

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CN114855698B true CN114855698B (en) 2023-08-18

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07158035A (en) * 1993-12-07 1995-06-20 Kubota Corp Movable weir
JP2001329759A (en) * 2000-05-23 2001-11-30 Kenwa Sangyo Kk Cutoff device
CN106640192A (en) * 2016-11-29 2017-05-10 辽宁工程技术大学 Flood-proof protective system for metro section
CN107366347A (en) * 2017-09-13 2017-11-21 沈阳建筑大学 A kind of underpass flood reverse-filling drainage system
CN107687349A (en) * 2017-09-30 2018-02-13 广州地铁设计研究院有限公司 Rail rapid transit engineering electric lifting type flood-proof protective closed door
CN209217546U (en) * 2018-11-30 2019-08-06 广西电网有限责任公司崇左供电局 Substation's fire barrier fixes device
CN213805192U (en) * 2020-10-19 2021-07-27 山东南山铝业股份有限公司 Full-aluminum flood prevention water retaining wall
CN216615695U (en) * 2022-01-11 2022-05-27 赛轮(东营)轮胎股份有限公司 High water level water retaining device for flood prevention of building entrance and exit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07158035A (en) * 1993-12-07 1995-06-20 Kubota Corp Movable weir
JP2001329759A (en) * 2000-05-23 2001-11-30 Kenwa Sangyo Kk Cutoff device
CN106640192A (en) * 2016-11-29 2017-05-10 辽宁工程技术大学 Flood-proof protective system for metro section
CN107366347A (en) * 2017-09-13 2017-11-21 沈阳建筑大学 A kind of underpass flood reverse-filling drainage system
CN107687349A (en) * 2017-09-30 2018-02-13 广州地铁设计研究院有限公司 Rail rapid transit engineering electric lifting type flood-proof protective closed door
CN209217546U (en) * 2018-11-30 2019-08-06 广西电网有限责任公司崇左供电局 Substation's fire barrier fixes device
CN213805192U (en) * 2020-10-19 2021-07-27 山东南山铝业股份有限公司 Full-aluminum flood prevention water retaining wall
CN216615695U (en) * 2022-01-11 2022-05-27 赛轮(东营)轮胎股份有限公司 High water level water retaining device for flood prevention of building entrance and exit

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