CN112049084B - Assembling movable dam capable of supporting each other - Google Patents
Assembling movable dam capable of supporting each other Download PDFInfo
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- CN112049084B CN112049084B CN202010985611.1A CN202010985611A CN112049084B CN 112049084 B CN112049084 B CN 112049084B CN 202010985611 A CN202010985611 A CN 202010985611A CN 112049084 B CN112049084 B CN 112049084B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/40—Swinging or turning gates
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Abstract
The invention discloses an assembled movable dam capable of playing a role of mutual support, which relates to the technical field of movable dams, wherein a concrete support column is fixedly arranged at the top end of a concrete foundation block and at a position between two groups of hinged seats, a first pressure reducing unit and a second pressure reducing unit are respectively and correspondingly and fixedly arranged above a bearing frame and corresponding to a first dam body unit and a second dam body unit, mutual supporting mechanisms playing a role of mutual support and pressure reducing units playing a role of sharing the interception pressure of an electric hydraulic cylinder are respectively arranged in the movable dams, the mutual supporting mechanisms can enable mutual supporting force to exist among the movable dams, when the assembled movable dam is actually used, the interception structure in the form of the whole movable dam can bear stronger water pressure, the opening and closing of a single movable dam cannot be influenced, the pressure reducing units can form tensile force on a dam body baffle, and further when water is stored, the pressure born by the electric hydraulic cylinder can be reduced, and the service life of the electric hydraulic cylinder is prolonged.
Description
Technical Field
The invention relates to the technical field of movable dams, in particular to an assembled movable dam capable of playing a role in mutual supporting.
Background
The movable dam is a revolutionary achievement of water conservancy science and technology, is the leading arc dam technology in the world at present, and is widely applied to agricultural irrigation, fishery, ship locks, seawater tide blocking, river management, small hydropower station construction, urban water systems, tourist landscape engineering and the like. The hydraulic dam is a novel impounded water device and has obvious effect on impounded water.
The existing movable dam has the following defects in actual use:
1. when the existing movable dam is actually used and a plurality of movable dams are used for intercepting together, very strong water pressure and impact force are required, so that higher requirements are required for the compression resistance of the existing movable dam body, and therefore the existing movable dams and the movable dams have a mutual supporting function and can better bear higher water pressure;
2. in actual use of the existing movable dam, water pressure acts on the dam body, the dam body transmits the pressure to the electric hydraulic cylinder, and compared with the dam body, the electric hydraulic cylinder can bear smaller pressure, so that the electric hydraulic cylinder is easily damaged due to long-time closure, the movable dam cannot be opened, and the flood discharge speed of the whole closure structure is influenced;
in summary, those skilled in the art have proposed an assembled movable dam that can act as a mutual support.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an assembled movable dam capable of playing a role of mutual support, wherein the movable dam is respectively provided with a mutual support mechanism playing a role of mutual support and a pressure reduction unit playing a role of sharing the pressure borne by an electric hydraulic cylinder, the mutual support mechanism can enable mutual supporting force to exist among all movable dams, when the assembled movable dam is actually used, the water pressure bearing capacity of a whole movable dam type intercepting structure is stronger, the opening and closing of a single movable dam cannot be influenced, the pressure reduction unit can form tensile force on a dam body baffle, further, when water storage is intercepted, the pressure borne by the electric hydraulic cylinder can be reduced, and the service life of the electric hydraulic cylinder is prolonged.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an equipment movable dam that can play mutual supporting role, is including the fixed concrete foundation block that sets up in the river course bottom the top of concrete foundation block fixed mounting respectively has two sets of articulated seats, the top of concrete foundation block and the top of two sets of articulated seats are connected with first dam body unit and second dam body unit jointly the top of concrete foundation block and the position fixed mounting who is located between two sets of articulated seats have the concrete support column the top fixed mounting of concrete support column has a bearing frame the position that bearing frame's top and correspond first dam body unit and second dam body unit corresponds fixed mounting respectively and has first decompression unit and second decompression unit, the back top of connecting first dam body unit and second dam body unit is corresponded respectively to the end of drawing of first decompression unit and second decompression unit.
The dam body structure comprises a first dam body unit, a second dam body unit and a plurality of clamping convex blocks, wherein the first dam body unit and the second dam body unit are two members with the same structure, each first dam body unit and each second dam body unit comprise a dam body baffle made of steel, an inserting frame of a U-shaped structure is fixedly installed on one side of the front face of each dam body baffle, the inserting frames are fixedly welded inside the inserting frames, the clamping convex blocks are fixedly welded on the other side of the front face of each dam body baffle, and two hanging rings are symmetrically and fixedly installed at the top of the back face of each dam body baffle.
Each other prop the mechanism and include that fixed mounting bears the base and slide to set up and wear the picture peg in the positive one of dam body baffle bear the positive fixed mounting of base has electronic hydraulic stem, dam body baffle and alternate between the board form sliding connection structure through linear guide and slider respectively wear the inside of picture peg to have seted up a plurality of block respectively and lead to groove and an adaptation and lead to the groove.
First decompression unit and second decompression unit are two components that the structure is the same, and first decompression unit and second decompression unit all include fixed welding respectively and open up the position board at bearing frame top and positive one bearing bottom plate and two bearing bottom plate's both ends are inside to correspond respectively and rotate and be connected with first fixed pulley and second fixed pulley, a steel wire rope is born jointly to the outside of first fixed pulley and second fixed pulley, the one end fixedly connected with hoist and mount frame of steel wire rope, other end fixedly connected with balancing weight.
Preferably, a plurality of hinged pipes are fixedly installed at the bottom end of the dam body baffle, and the hinged pipes are connected with the top end of the hinged seat together in a rotating mode.
Preferably, the first dam body unit further comprises two concrete stoppers fixedly mounted on the top end of the concrete foundation block, the two concrete stoppers are connected with the dam body baffle through an electric hydraulic cylinder, and a rotary connection structure is formed between the telescopic end of the electric hydraulic cylinder and the dam body baffle and between the non-telescopic end of the electric hydraulic cylinder and the concrete stopper through a connection seat.
Preferably, a fastening tandem connection structure is formed between the telescopic end of the electric hydraulic rod and the inserting plate through a driving seat;
preferably, the linear guide rail is fixedly installed on the front face of the dam body baffle, the sliding block is fixedly installed on the back face of the inserting plate, and the sliding block is sleeved on the sliding end face of the linear guide rail.
Preferably, the number of the clamping through grooves corresponds to the number of the clamping lugs, and the inner size of each clamping through groove is matched with the outer size of each clamping lug;
preferably, the position of the adapting through groove corresponds to the position of one of the adapter seats, and the inner width is larger than the maximum width of the adapter seat.
Preferably, the insides of the two expansion plates are respectively connected with a guide shaft rod in a sliding manner, and the bottom ends of the two guide shaft rods are connected with the top end of the balancing weight together.
Preferably, a sliding connection structure is formed between the two guide shaft levers and the position expanding plate through shaft sleeves;
preferably, the top ends of the two guide shaft levers are fixedly welded with a limiting plate, and the minimum diameter of the limiting plate is larger than the maximum inner diameter of the shaft sleeve.
Preferably, the bottom end of the hoisting frame is symmetrically and fixedly connected with two steel wire branch ropes, the bottom end of each steel wire branch rope is fixedly connected with a hook, and each hook is connected with a hanging ring at a corresponding position in a hanging mode.
Advantageous effects
The invention provides an assembled movable dam which can play a mutual supporting role. Compared with the prior art, the method has the following beneficial effects:
1. an assembled movable dam capable of playing a role of mutual supporting is characterized in that a mutual supporting mechanism is additionally arranged in the existing movable dam, wherein the mutual supporting mechanism comprises a bearing base fixedly arranged on the front face of a dam body baffle and a penetrating plate arranged on the front face of the dam body baffle in a sliding mode, an electric hydraulic rod is fixedly arranged on the front face of the bearing base, a sliding connection structure is formed between the dam body baffle and the penetrating plate through a linear guide rail and a sliding block respectively, a plurality of clamping through grooves and an adaptive through groove are formed in the penetrating plate respectively, in the structure, in actual use, the electric hydraulic rod extends, under the action of the sliding rail and the sliding block, the penetrating plate on a first dam body unit moves towards a penetrating frame on a second dam body unit until penetrating in the penetrating frame, and therefore, in the water storage and interception process, the whole movable dam-shaped structure can bear stronger water pressure, and the opening and closing of the single movable dam body cannot be influenced.
2. An assembled movable dam capable of playing a mutual supporting role is characterized in that a pressure reducing unit is additionally arranged in the existing movable dam, wherein the pressure reducing unit comprises a bearing bottom plate and two rubbing plates which are fixedly welded at the top end and the front side of a bearing frame respectively, a first fixed pulley and a second fixed pulley are correspondingly and rotatably connected inside two ends of the bearing bottom plate respectively, a steel wire main rope is jointly borne outside the first fixed pulley and the second fixed pulley, one end of the steel wire main rope is fixedly connected with a hoisting frame, the other end of the steel wire main rope is fixedly connected with a balancing weight, two steel wire branch ropes are symmetrically and fixedly connected with the bottom end of the hoisting frame, the bottom end of each steel wire branch rope is fixedly connected with a hook, each hook is hung and connected with a corresponding position together, and the balancing weight generates tension on the whole steel wire main rope under the action of gravity when the assembled movable dam is actually used, under the effect of two fixed pulleys and hoist and mount frame, this pulling force transmits for two steel wire branch ropes, and then links together with the dam body baffle with the help of two couples, and the pulling force is used in the dam body baffle, bears the effort that water pressure exerted jointly, can effectual reduction electric hydraulic cylinder bore pressure, extension electric hydraulic cylinder's life.
Drawings
FIG. 1 is a schematic view of the assembly structure of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a schematic structural diagram of a first dam unit and a second dam unit in a first view angle state according to the present invention;
FIG. 4 is a schematic structural diagram of a first dam unit and a second dam unit in a second view angle state according to the present invention;
FIG. 5 is a schematic view of a first perspective of the inter-supporting mechanism of the present invention;
FIG. 6 is a schematic structural view of a second perspective of the inter-supporting mechanism of the present invention;
FIG. 7 is a schematic illustration of the construction of a first pressure relief unit and a second pressure relief unit in accordance with the present invention;
FIG. 8 is a top view of the present invention of FIG. 7;
FIG. 9 is a left side view of FIG. 7 in accordance with the present invention;
fig. 10 is a front view of fig. 7 of the present invention.
In the figure: 1. a concrete foundation block; 2. a hinged seat; 3. a first dam unit; 31. a dam body baffle; 32. a concrete stop block; 33. an electric hydraulic cylinder; 34. a hinged tube; 35. a linking seat; 36. inserting the frame; 37. clamping the convex block; 38. a mutual supporting mechanism; 381. a load bearing base; 382. an electro-hydraulic lever; 383. inserting plates; 384. a driving seat; 385. a linear guide rail; 386. a slider; 387. adapting the through groove; 388. clamping the through groove; 39. hanging a ring; 4. a second dam unit; 5. a concrete support column; 6. a load-bearing frame; 7. a first decompression unit; 71. a load floor; 72. rubbing a position plate; 73. a first fixed pulley; 74. a second fixed pulley; 75. a steel wire main rope; 76. hoisting the frame; 77. a balancing weight; 78. a steel wire branch rope; 79. hooking; 710. a shaft sleeve; 711. a guide shaft lever; 712. a limiting plate; 8. a second decompression unit.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: an assembled movable dam capable of playing a role of mutual supporting comprises a concrete foundation block 1 fixedly arranged at the bottom end of a river channel, two groups of hinged seats 2 are fixedly arranged at the top end of the concrete foundation block 1 respectively, a first dam body unit 3 and a second dam body unit 4 are connected to the top end of the concrete foundation block 1 and the upper portions of the two groups of hinged seats 2 together, the first dam body unit 3 and the second dam body unit 4 are two components with the same structure, a concrete supporting column 5 is fixedly arranged at the top end of the concrete foundation block 1 and between the two groups of hinged seats 2, a bearing frame 6 is fixedly arranged at the top end of the concrete supporting column 5, a first decompression unit 7 and a second decompression unit 8 are fixedly arranged above the bearing frame 6 and corresponding to the first dam body unit 3 and the second dam body unit 4 respectively, the first decompression unit 7 and the second decompression unit 8 are two components with the same structure, the traction ends of the first decompression unit 7 and the second decompression unit 8 are respectively and correspondingly connected with the tops of the back surfaces of the first dam unit 3 and the second dam unit 4.
Referring to fig. 3-4, the first dam unit 3 and the second dam unit 4 both include a dam baffle 31 made of steel, a plurality of hinged pipes 34 are fixedly installed at the bottom end of the dam baffle 31, the hinged pipes 34 are rotatably connected with the top end of the hinged seat 2, an inserting frame 36 having a "u" -shaped structure is fixedly installed at one side of the front surface of the dam baffle 31, a plurality of engaging protrusions 37 are fixedly welded inside the inserting frame 36, an inter-supporting mechanism 38 is fixedly installed at the other side of the front surface of the dam baffle 31, two hanging rings 39 are symmetrically and fixedly installed at the top of the back surface of the dam baffle 31, the first dam unit 3 and the second dam unit 4 further include two concrete stoppers 32 fixedly installed at the top end of the concrete base 1, and the two concrete stoppers 32 are connected with the dam baffle 31 through an electric hydraulic cylinder 33, the telescopic end of the electric hydraulic cylinder 33 and the dam body baffle 31 and the non-telescopic end of the electric hydraulic cylinder 33 and the concrete stopper 32 form a rotary connecting structure through a connecting seat 35.
Referring to fig. 5-6, the mutual supporting mechanism 38 includes a bearing base 381 fixedly installed on the front surface of the dam apron 31 and a penetrating board 383 slidably installed on the front surface of the dam apron 31, an electric hydraulic rod 382 is fixedly installed on the front surface of the bearing base 381, a fastening serial structure is formed between the telescopic end of the electric hydraulic rod 382 and the penetrating board 383 through a driving seat 384, a sliding connection structure is formed between the dam apron 31 and the penetrating board 383 through a linear guide rail 385 and a sliding block 386 respectively, a plurality of engaging through grooves 388 and an engaging through groove 387 are respectively formed inside the penetrating board 383, the linear guide rail 385 is fixedly installed on the front surface of the dam apron 31, the sliding block 386 is fixedly installed on the back surface of the penetrating board 383, the sliding block 386 is sleeved on the sliding end surface of the linear guide rail 385, the number of the engaging through grooves 388 corresponds to the number of the engaging bumps 37, and the inner dimension of each engaging through groove 388 is adapted to the outer dimension of the engaging bumps 37, the position of the adapting through slots 387 corresponds to the position of one of the adapter seats 35 and the inner width is greater than the maximum width of the adapter seat 35.
Referring to fig. 7-10, each of the first decompression unit 7 and the second decompression unit 8 includes a carrying bottom plate 71 and two rubbing plates 72 fixedly welded to the top end and the front surface of the carrying frame 6, a first fixed pulley 73 and a second fixed pulley 74 are rotatably connected to the inside of each of the two ends of the carrying bottom plate 71, a steel wire rope 75 is supported by the outside of each of the first fixed pulley 73 and the second fixed pulley 74, a hoisting frame 76 is fixedly connected to one end of the steel wire rope 75, a counterweight 77 is fixedly connected to the other end of the steel wire rope, a guide shaft 711 is slidably connected to the inside of each of the two rubbing plates 72, the bottom ends of the two guide shaft 711 are connected to the top end of the counterweight 77, a sliding connection structure is formed between the two guide shaft 711 and the rubbing plates 72 through a shaft sleeve 710, a limiting plate 712 is fixedly welded to the top ends of the two guide shaft 711, the minimum diameter of the limiting plate 712 is larger than the maximum inner diameter of the shaft sleeve 710, two steel wire branch ropes 78 are symmetrically and fixedly connected to the bottom end of the hoisting frame 76, a hook 79 is fixedly connected to the bottom end of each steel wire branch rope 78, and each hook 79 is hung on the hanging ring 39 at the corresponding position.
When in use, the dam body baffle 32 can be opened and closed by extending and shortening the electric hydraulic cylinder 33;
when the whole movable dam is in a water storage and closure state, the effect of enabling the whole movable dam to resist water pressure and impact force in an increasing mode can be achieved, the electric hydraulic rod 382 can be controlled to extend, under the action of the linear guide rail 385 and the slide block 386, the penetrating inserting plate 383 on the first dam body unit 3 is further pushed to move towards the penetrating frame 37 on the second dam body unit 4 until the penetrating inserting frame 37 is penetrated, and therefore the water pressure bearing capacity of the whole movable dam type closure structure can be stronger in the water storage and closure process, and the opening and closing of a single movable dam body cannot be influenced;
similarly, when the whole movable dam is in a water storage and closure state, the counterweight 77 generates a pulling force on the whole steel wire main rope 75 under the action of gravity, the pulling force is transmitted to the two steel wire branch ropes 78 under the action of the first fixed pulley 73, the second fixed pulley 74 and the hoisting frame 76, and then the two steel wire branch ropes are connected with the dam body baffle 31 by virtue of the two hooks 79 and the hanging ring 39, the pulling force acts on the dam body baffle 31 to jointly bear the acting force exerted by the water pressure, so that the pressure borne by the electric hydraulic cylinder 33 can be effectively reduced, and the service life of the electric hydraulic cylinder 33 is prolonged.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An assembled movable dam capable of supporting each other comprises a concrete foundation block (1) fixedly arranged at the bottom end of a river channel, and is characterized in that two groups of hinged seats (2) are fixedly arranged at the top end of the concrete foundation block (1) respectively, a first dam body unit (3) and a second dam body unit (4) are connected to the top end of the concrete foundation block (1) and the upper portions of the two groups of hinged seats (2) together, a concrete supporting column (5) is fixedly arranged at the top end of the concrete foundation block (1) and between the two groups of hinged seats (2), a bearing frame (6) is fixedly arranged at the top end of the concrete supporting column (5), a first decompression unit (7) and a second decompression unit (8) are fixedly arranged above the bearing frame (6) and corresponding to the positions of the first dam body unit (3) and the second dam body unit (4) respectively, the traction ends of the first decompression unit (7) and the second decompression unit (8) are respectively and correspondingly connected with the tops of the back surfaces of the first dam body unit (3) and the second dam body unit (4);
the dam body structure comprises a first dam body unit (3) and a second dam body unit (4), wherein the first dam body unit (3) and the second dam body unit (4) are two members with the same structure, each of the first dam body unit (3) and the second dam body unit (4) comprises a steel dam body baffle (31), one side of the front surface of each dam body baffle (31) is fixedly provided with a U-shaped inserting frame (36), a plurality of clamping convex blocks (37) are fixedly welded inside each inserting frame (36), the other side of the front surface of each dam body baffle (31) is fixedly provided with a mutual supporting mechanism (38), and the tops of the back surfaces of the dam body baffles (31) are symmetrically and fixedly provided with two hanging rings (39);
the supporting mechanism (38) comprises a bearing base (381) fixedly installed on the front face of the dam body baffle (31) and a penetrating board (383) arranged on the front face of the dam body baffle (31) in a sliding mode, an electric hydraulic rod (382) is fixedly installed on the front face of the bearing base (381), sliding connection structures are formed between the dam body baffle (31) and the penetrating board (383) through a linear guide rail (385) and a sliding block (386), and a plurality of clamping through grooves (388) and an adapting through groove (387) are formed in the penetrating board (383);
the first decompression unit (7) and the second decompression unit (8) are two components with the same structure, the first decompression unit (7) and the second decompression unit (8) respectively comprise a bearing bottom plate (71) and two rubbing plates (72) which are respectively fixedly welded at the top end and the front surface of a bearing frame (6), a first fixed pulley (73) and a second fixed pulley (74) are respectively and correspondingly and rotatably connected inside two ends of the bearing bottom plate (71), a steel wire main rope (75) is jointly borne outside the first fixed pulley (73) and the second fixed pulley (74), one end of the steel wire main rope (75) is fixedly connected with a hoisting frame (76), and the other end of the steel wire main rope is fixedly connected with a balancing weight (77);
the first dam body unit (3) further comprises two concrete stops (32) fixedly mounted at the top end of the concrete foundation block (1), the two concrete stops (32) are connected with the dam body baffle (31) through an electric hydraulic cylinder (33), and a rotary connecting structure is formed between the telescopic end of the electric hydraulic cylinder (33) and the dam body baffle (31) and between the non-telescopic end of the electric hydraulic cylinder (33) and the concrete stops (32) through connecting seats (35); two steel wire branch ropes (78) of bottom symmetry formula fixedly connected with of hoist and mount frame (76), every couple (79) of the equal fixedly connected with in bottom of steel wire branch rope (78), every couple (79) all link together with link (39) that correspond the position.
2. The assembled movable dam with mutual supporting function as claimed in claim 1, wherein a plurality of hinged pipes (34) are fixedly installed at the bottom end of the dam body baffle (31), and the hinged pipes (34) are jointly and rotatably connected with the top end of the hinged seat (2).
3. An assembled movable dam capable of supporting each other as claimed in claim 1, wherein a fastening tandem structure is formed between the telescopic end of said electro-hydraulic rod (382) and the insertion plate (383) through a driving seat (384);
linear guide (385) fixed mounting is in the front of dam body baffle (31), slider (386) fixed mounting is in the back of wearing picture peg (383), slider (386) cover is established on linear guide (385)'s slip terminal surface.
4. An assembled movable dam capable of supporting each other according to claim 1, wherein the number of the plurality of the engaging through grooves (388) corresponds to the number of the engaging projections (37), and the inner size of each engaging through groove (388) is adapted to the outer size of the engaging projection (37);
the position of the adapting through groove (387) corresponds to the position of one of the connecting seats (35), and the inner width of the adapting through groove is larger than the maximum width of the connecting seat (35).
5. An assembled movable dam capable of supporting each other according to claim 1, wherein a guiding shaft (711) is slidably connected to the inside of each of the two rubbing plates (72), and the bottom ends of the two guiding shafts (711) are jointly connected to the top end of the counterweight (77).
6. The assembled movable dam capable of supporting each other as claimed in claim 5, wherein a sliding connection structure is formed between the two guiding shafts (711) and the position rubbing plate (72) through a shaft sleeve (710); the top ends of the two guide shaft rods (711) are fixedly welded with a limiting plate (712), and the minimum diameter of the limiting plate (712) is larger than the maximum inner diameter of the shaft sleeve (710).
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CN107178071A (en) * | 2017-04-25 | 2017-09-19 | 北京赛旺特科技发展有限公司 | A kind of hinge dam |
JP6405006B1 (en) * | 2017-08-02 | 2018-10-17 | 旭イノベックス株式会社 | Tsunami and storm surge flap gates |
CN107806073A (en) * | 2017-10-11 | 2018-03-16 | 中国电建集团贵阳勘测设计研究院有限公司 | High-narrow down-the-hole plane sliding accident gate structure |
JP2019105086A (en) * | 2017-12-13 | 2019-06-27 | 日立造船株式会社 | Relief gate |
CN109056662A (en) * | 2018-10-12 | 2018-12-21 | 广东电网有限责任公司 | Flood control waterlogging gate and flood control waterlogging system |
CN211036858U (en) * | 2019-09-06 | 2020-07-17 | 河北省水利水电勘测设计研究院 | Anti-freezing system for large-span landscape water retaining engineering |
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