CN114457761A - Lifting type water conservancy gate structure for water conservancy project - Google Patents
Lifting type water conservancy gate structure for water conservancy project Download PDFInfo
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- CN114457761A CN114457761A CN202210136252.1A CN202210136252A CN114457761A CN 114457761 A CN114457761 A CN 114457761A CN 202210136252 A CN202210136252 A CN 202210136252A CN 114457761 A CN114457761 A CN 114457761A
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- gate
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- water
- lifting
- rod
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 135
- 230000001681 protective effect Effects 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 4
- 230000003028 elevating effect Effects 0.000 claims 5
- 230000033228 biological regulation Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001363 water suppression through gradient tailored excitation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000003827 upregulation Effects 0.000 description 1
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Classifications
-
- 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
- E02B7/26—Vertical-lift gates
-
- 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
- E02B7/26—Vertical-lift gates
- E02B7/36—Elevating mechanisms for vertical-lift gates
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Barrages (AREA)
Abstract
The invention discloses a lifting type water conservancy gate structure for water conservancy engineering, which comprises a gate base, a clamping and embedding port, a supporting base, a lifting outer frame, a lifting driving mechanism and a movable gate, wherein when the gate is closed, a lifting driving gear controls the whole lifting adjusting rod to move downwards through an inner rack and drives the external movable gate to wholly descend, an adjusting cover plate can finally move to an auxiliary water outlet to close the auxiliary water outlet, the water leakage problem of the water conservancy gate in a closed state is avoided, when the gate is opened, the adjusting cover plate moves upwards in a water storage inner cavity and discharges water resources accumulated in the water storage inner cavity on the upper side of the adjusting cover plate from a vertical water outlet and an auxiliary water inlet, and when the position of the adjusting cover plate is positioned above the auxiliary water inlet, the water resources can enter from the auxiliary water inlet and are discharged from the auxiliary water outlet, the emptying of accumulated water resources in the water conservancy gate is realized, and the water drainage efficiency when the gate is opened is improved.
Description
Technical Field
The invention relates to the technical field of hydraulic engineering equipment, in particular to a lifting type water conservancy gate structure for hydraulic engineering.
Background
The water conservancy project is a project built for controlling and allocating surface water and underground water in the nature to achieve the purposes of removing harm and benefiting, water is a precious resource essential for human production and life, but the naturally existing state of the water conservancy project does not completely meet the requirements of human beings, the water flow can be controlled only by building the water conservancy project to prevent flood disasters, and water quantity regulation and distribution are carried out to meet the requirements of people on water resources in life and production, the water conservancy project needs to build different types of hydraulic buildings such as dams, dikes, spillways, water gates, water inlets, channels, ferrys, rafts, fishways and the like to achieve the aims, wherein the water conservancy gate enables important control equipment in the water conservancy project, is used for closing and opening control facilities of water discharge channels, and can be used for intercepting water flow, controlling water level, regulating flow and achieving the like, The water conservancy gate that discharges silt and floater etc. and commonly used among the hydraulic engineering at present is in the use, and a large amount of water resources are accumulated in various inside recesses easily, and when opening the gate and discharging, its emission mainly depends on the size of gate, if the setting of gate is less, then the slower problem of waterproof rate appears easily.
Disclosure of Invention
The invention aims to provide a lifting type water conservancy gate structure for water conservancy engineering, when the gate is closed, a lifting motor drives a lifting driving gear to rotate through a rotating shaft, the lifting driving gear controls the whole lifting adjusting rod to move downwards through an inner rack and drives an external movable gate to wholly descend, an adjusting cover plate can finally move to an auxiliary water outlet to close the auxiliary water outlet, the problem of water leakage of the water conservancy gate in a closed state is avoided, when the gate is opened, the whole movable gate moves upwards, the adjusting cover plate moves upwards in a water storage inner cavity and discharges water resources accumulated in the water storage inner cavity on the upper side of the adjusting cover plate from a vertical water outlet and an auxiliary water inlet, when the position of the adjusting cover plate is positioned above the auxiliary water inlet, the water resources can enter from the auxiliary water inlet and are discharged from the auxiliary water outlet, improve this water sluicegate's water-proof efficiency in proper order to solve the problem that proposes among the above-mentioned background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an over-and-under type water sluicegate structure for hydraulic engineering, includes gate base, inlay card mouth, supports base, lift outline, lift actuating mechanism and activity gate, the upside center department of gate base is equipped with inlay card mouth, the both ends of gate base are equipped with the support base respectively, the upside installation lift outline of support base, lift actuating mechanism is installed to the inside upper end of lift outline, installation activity gate in the lift outline of lift actuating mechanism downside.
Preferably, lift actuating mechanism includes motor protective sleeve, elevator motor, sleeve bolt, rotation axis, spring protective sleeve, reset torsion spring and lift adjustment sleeve, the internally mounted elevator motor of motor protective sleeve, the sleeve bolt is installed respectively to the side around the motor protective sleeve, the bottom installation rotation axis of motor protective sleeve, the end of rotation axis is equipped with spring protective sleeve, the rotation axis outside in the spring protective sleeve is equipped with reset torsion spring, the left and right sides lift adjustment sleeve is installed between the spring protective sleeve.
Preferably, the lift adjustment sleeve pipe includes sleeve pipe base, pivot base, central sleeve pipe, link up regulation hole, drive gear groove, interior drive shaft and lift drive gear, the outside center department of sleeve pipe base is equipped with the pivot base, be equipped with central sleeve pipe between the sleeve pipe base, both ends are equipped with respectively about central sheathed tube inside and link up the regulation hole, the inside side of link up the regulation hole is equipped with the drive gear groove, install lift drive gear in the drive gear groove, drive shaft in the lift drive gear interior installation.
Preferably, the activity gate includes gate shell, sealed welt, embedded slider, supplementary outlet, inlay card slot, connection base, lift adjustment pole, perpendicular outlet, supplementary water inlet and retaining inner chamber, the sealed welt is installed respectively to the left and right sides of gate shell, the outside of sealed welt is equipped with embedded slider, the positive downside of gate shell is equipped with supplementary outlet, be equipped with the inlay card slot on the gate shell of supplementary outlet downside, the top center department of gate shell is equipped with the connection base, install lift adjustment pole in the connection base, be equipped with perpendicular outlet on the gate shell of the connection base left and right sides, the inside of gate shell is equipped with the retaining inner chamber, the gate shell center department of retaining inner chamber rear side is equipped with supplementary water inlet.
Preferably, lift adjusting lever includes well core rod, spacing cardboard, fixing bolt, buffer spring, pole setting base, drive pole setting, open slot, interior rack and regulation apron, well core rod's bottom is equipped with spacing cardboard, the apron is adjusted in the bottom installation of spacing cardboard, the bottom center department installation fixing bolt who adjusts the apron, well core rod's the outside is equipped with buffer spring, well core rod top's both ends are equipped with the pole setting base respectively, installation drive pole setting in the pole setting base, the side of drive pole setting is equipped with the open slot, be equipped with interior rack in the open slot.
Preferably, the embedded sliding block is embedded in a vertical embedding groove in the inner wall of the lifting outer frame in a clamping manner.
Preferably, the tooth grooves on the outer side of the lifting driving gear are clamped and embedded in the inner rack.
Compared with the prior art, the invention has the beneficial effects that:
according to the lifting type water conservancy gate structure for the water conservancy project, when the gate is in the opening and closing state, the position of the adjusting cover plate is adjusted, so that water resources accumulated in the gate are emptied when the gate is converted from the closing state to the opening state, and the water discharging efficiency of the gate in the opening state is effectively improved by using the water discharged from the auxiliary water inlet and the auxiliary water outlet.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the lift drive mechanism of the present invention in partial cross-section;
FIG. 3 is a schematic cross-sectional view of the lift adjustment sleeve of the present invention;
FIG. 4 is a schematic structural view of a movable gate according to the present invention;
FIG. 5 is a schematic sectional view of the movable gate of the present invention;
FIG. 6 is a schematic structural diagram of a lift adjusting lever according to the present invention;
fig. 7 is an enlarged schematic view of the elevation adjustment lever at a of the present invention.
In the figure: 1. a gate base; 2. a clamping and embedding opening; 3. a support base; 4. lifting the outer frame; 5. a lifting drive mechanism; 51. a motor protection sleeve; 52. a lifting motor; 53. a sleeve bolt; 54. a rotating shaft; 55. a spring protection sleeve; 56. a return torsion spring; 57. a lifting adjusting sleeve; 571. a sleeve base; 572. a rotating shaft base; 573. a central sleeve; 574. the adjusting hole is communicated; 575. a drive gear slot; 576. an inner drive shaft; 577. a lifting drive gear; 6. a movable gate; 61. a gate housing; 62. sealing and welting; 63. a sliding block is embedded; 64. an auxiliary water discharge port; 65. the slot is embedded in a clamping manner; 66. connecting a base; 67. a lifting adjusting rod; 671. a center pole; 672. a limiting clamping plate; 673. fixing the bolt; 674. a buffer spring; 675. a vertical rod base; 676. driving the vertical rod; 677. an open slot; 678. an inner rack; 679. adjusting the cover plate; 68. a vertical water discharge port; 69. an auxiliary water inlet; 610. a water storage inner cavity.
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, a lifting type water conservancy gate structure for water conservancy projects comprises a gate base 1, a clamping opening 2, a supporting base 3, a lifting outer frame 4, a lifting driving mechanism 5 and a movable gate 6, wherein the clamping opening 2 is arranged at the center of the upper side of the gate base 1, the supporting base 3 is respectively arranged at two ends of the gate base 1, the lifting outer frame 4 is arranged at the upper side of the supporting base 3, the lifting driving mechanism 5 is arranged at the upper end inside the lifting outer frame 4, and the movable gate 6 is arranged in the lifting outer frame 4 at the lower side of the lifting driving mechanism 5.
Referring to fig. 2, the elevation driving mechanism 5 includes a motor protecting sleeve 51, an elevation motor 52, a sleeve bolt 53, a rotating shaft 54, a spring protecting sleeve 55, a return torsion spring 56 and an elevation adjusting sleeve 57, the elevation motor 52 is installed inside the motor protecting sleeve 51, the sleeve bolt 53 is installed on the front and rear side surfaces of the motor protecting sleeve 51, the rotating shaft 54 is installed at the bottom of the motor protecting sleeve 51, the spring protecting sleeve 55 is arranged at the tail end of the rotating shaft 54, the return torsion spring 56 is arranged outside the rotating shaft 54 inside the spring protecting sleeve 55, and the elevation adjusting sleeve 57 is installed between the left and right spring protecting sleeves 55.
Referring to fig. 3, the lifting adjustment sleeve 57 includes a sleeve base 571, a rotating shaft base 572, a central sleeve 573, a through adjustment hole 574, a driving gear groove 575, an inner driving shaft 576 and a lifting driving gear 577, the rotating shaft base 572 is disposed at the center of the outer side of the sleeve base 571, the central sleeve 573 is disposed between the sleeve bases 571, the through adjustment hole 574 is disposed at each of the left and right ends of the inside of the central sleeve 573, the driving gear groove 575 is disposed at the inner side of the through adjustment hole 574, the lifting driving gear 577 is installed in the driving gear groove 575, and the inner driving shaft 576 is installed in the lifting driving gear 577.
Referring to fig. 4-5, the movable gate 6 includes a gate housing 61, a sealing welt 62, an embedded slider 63, an auxiliary water outlet 64, an inserting slot 65, a connecting base 66, a lifting adjusting rod 67, a vertical water outlet 68, an auxiliary water inlet 69 and a water storage cavity 610, the left and right sides of the gate housing 61 are respectively provided with the sealing welt 62, the outer side of the sealing welt 62 is provided with the embedded slider 63, the embedded slider 63 is inserted and mounted in the vertical welt of the inner wall of the lifting outer frame 4, the front lower side of the gate housing 61 is provided with the auxiliary water outlet 64, the gate housing 61 below the auxiliary water outlet 64 is provided with the inserting slot 65, the top center of the gate housing 61 is provided with the connecting base 66, the lifting adjusting rod 67 is mounted in the connecting base 66, the vertical water outlet 68 is provided on the gate housing 61 connecting the left and right sides of the base 66, the water storage cavity 610 is provided in the gate housing 61, an auxiliary water inlet 69 is arranged at the center of the gate shell 61 at the rear side of the water storage inner cavity 610.
Referring to fig. 6-7, the lifting adjusting rod 67 includes a central rod 671, a limit clamp plate 672, a fixing bolt 673, a buffer spring 674, a rod base 675, a driving rod 676, an open slot 677, an internal rack 678 and an adjusting cover plate 679, the bottom of the central rod 671 is provided with the limit clamp plate 672, the bottom of the limit clamp plate 672 is provided with the adjusting cover plate 679, the center of the bottom of the adjusting cover plate 679 is provided with the fixing bolt 673, the outer side of the central rod 671 is provided with the buffer spring 674, the top ends of the central rod 671 are respectively provided with the rod base 675, the driving rod 676 is installed in the rod base 675, the side of the driving rod 676 is provided with the open slot 677, the open slot 677 is provided with the internal rack 678, the tooth groove outside the lifting driving gear 577 is embedded in the internal rack 678, when the gate is closed, the lifting driving gear 577 rotates through the rotating shaft 54, the lifting driving gear 577 controls the whole lifting adjusting rod 67 to move downwards through the internal rack 678, and drives the external movable gate 6 to descend integrally, and the adjusting cover plate 679 can be moved to the auxiliary water outlet 64 finally to close the auxiliary water outlet 64, so that the water conservancy gate is prevented from leaking in a closed state.
The working principle of the invention is as follows: the invention relates to a lifting type water conservancy gate structure for water conservancy engineering, when the gate is closed, a lifting motor 52 drives a lifting driving gear 577 to rotate through a rotating shaft 54, the lifting driving gear 577 controls the whole lifting adjusting rod 67 to move downwards through an internal rack 678 and drives an external movable gate 6 to integrally descend, an adjusting cover plate 679 can finally move to an auxiliary water outlet 64 to close the auxiliary water outlet 64, the problem of water leakage of the water conservancy gate in a closed state is avoided, when the gate is opened, the whole movable gate 6 moves upwards, the adjusting cover plate 679 moves upwards in a water storage inner cavity 610 and discharges water resources accumulated in the water storage inner cavity 610 at the upper side of the adjusting cover plate 679 from a vertical water outlet 68 and an auxiliary water inlet 69, when the position of the adjusting cover plate 679 is positioned above the auxiliary water inlet 69, the water resources can enter from the auxiliary water inlet 69, and is discharged from the auxiliary drain port 64.
In summary, the following steps: the invention relates to a lifting type water conservancy gate structure for water conservancy engineering, when the gate is closed, a lifting motor 52 drives a lifting driving gear 577 to rotate through a rotating shaft 54, the lifting driving gear 577 controls the whole lifting adjusting rod 67 to move downwards through an internal rack 678 and drives an external movable gate 6 to integrally descend, an adjusting cover plate 679 can finally move to an auxiliary water outlet 64 to close the auxiliary water outlet 64, the problem of water leakage of the water conservancy gate in a closed state is avoided, when the gate is opened, the whole movable gate 6 moves upwards, the adjusting cover plate 679 moves upwards in a water storage inner cavity 610 and discharges water resources accumulated in the water storage inner cavity 610 at the upper side of the adjusting cover plate 679 from a vertical water outlet 68 and an auxiliary water inlet 69, when the position of the adjusting cover plate 679 is positioned above the auxiliary water inlet 69, the water resources can enter from the auxiliary water inlet 69, and is discharged from the auxiliary water outlet 64, the structure of the invention is complete and reasonable, the emptying of the accumulated water resource in the water gate is realized, and the water discharging efficiency when the gate is opened is improved.
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 solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (7)
1. The utility model provides a over-and-under type water sluicegate structure for hydraulic engineering, includes gate base (1), inlay card mouth (2), supports base (3), lift outline (4), lift actuating mechanism (5) and activity gate (6), its characterized in that: the utility model discloses a gate valve, including gate base (1), upside center department of gate base (1) is equipped with inlay card mouth (2), the both ends of gate base (1) are equipped with respectively and support base (3), upside installation lift outline (4) of supporting base (3), lift actuating mechanism (5) are installed to the inside upper end of lift outline (4), movable gate (6) are installed in lift outline (4) of lift actuating mechanism (5) downside.
2. The elevating type water sluicegate structure for water conservancy project according to claim 1, wherein: lifting drive mechanism (5) are including motor protective case (51), elevator motor (52), sleeve bolt (53), rotation axis (54), spring protective case (55), torsion spring that resets (56) and lift adjustment sleeve pipe (57), the internally mounted elevator motor (52) of motor protective case (51), sleeve bolt (53) are installed respectively to the front and back side of motor protective case (51), the bottom installation rotation axis (54) of motor protective case (51), the end of rotation axis (54) is equipped with spring protective case (55), rotation axis (54) outside in spring protective case (55) is equipped with torsion spring that resets (56), the left and right sides installation lift adjustment sleeve pipe (57) between spring protective case (55).
3. The elevating type water sluicegate structure for water conservancy project according to claim 2, wherein: the lifting adjusting sleeve (57) comprises a sleeve base (571), a rotating shaft base (572), a central sleeve (573), through adjusting holes (574), a driving gear groove (575), an inner driving shaft (576) and a lifting driving gear (577), the rotating shaft base (572) is arranged at the center of the outer side of the sleeve base (571), the central sleeve (573) is arranged between the sleeve bases (571), the through adjusting holes (574) are respectively arranged at the left end and the right end of the inner portion of the central sleeve (573), the driving gear groove (575) is arranged on the inner side face of the through adjusting hole (574), the lifting driving gear (577) is installed in the driving gear groove (575), and the inner driving shaft (576) is installed in the lifting driving gear (577).
4. A lifting sluicegate structure for hydraulic engineering according to claim 3, wherein: the movable gate (6) comprises a gate shell (61), a sealing welt (62), an embedded slider (63), an auxiliary water outlet (64), a clamping and embedding slot (65), a connecting base (66), a lifting adjusting rod (67), a vertical water outlet (68), an auxiliary water inlet (69) and a water storage inner cavity (610), wherein the sealing welt (62) is respectively installed at the left side and the right side of the gate shell (61), the embedded slider (63) is arranged at the outer side of the sealing welt (62), the auxiliary water outlet (64) is arranged at the lower side of the front surface of the gate shell (61), the clamping and embedding slot (65) is arranged on the gate shell (61) at the lower side of the auxiliary water outlet (64), the connecting base (66) is arranged at the center of the top of the gate shell (61), the lifting adjusting rod (67) is installed in the connecting base (66), the vertical water outlet (68) is arranged on the gate shell (61) at the left side and the right side of the connecting base (66), the inside of gate shell (61) is equipped with retaining inner chamber (610), the gate shell (61) center department of retaining inner chamber (610) rear side is equipped with supplementary water inlet (69).
5. The elevating type water sluicegate structure for water conservancy project according to claim 4, wherein: the lifting adjusting rod (67) comprises a center rod (671), a limiting clamping plate (672), a fixing bolt (673), a buffer spring (674), a rod base (675), a driving rod (676), an open slot (677), an inner rack (678) and an adjusting cover plate (679), wherein the limiting clamping plate (672) is arranged at the bottom of the center rod (671), the adjusting cover plate (679) is arranged at the bottom of the limiting clamping plate (672), the fixing bolt (673) is arranged at the center of the bottom of the adjusting cover plate (679), the buffer spring (674) is arranged on the outer side of the center rod (671), the two ends of the top of the center rod (671) are respectively provided with the rod base (675), the driving rod (676) is arranged in the rod base (675), the open slot (677) is arranged on the side face of the driving rod (676), and the inner rack (678) is arranged in the open slot (677).
6. The elevating type water sluicegate structure for water conservancy project according to claim 4, wherein: the embedded sliding block (63) is embedded in a vertical embedding groove in the inner wall of the lifting outer frame (4).
7. The elevating type water sluicegate structure for water conservancy project according to claim 5, wherein: tooth grooves on the outer side of the lifting driving gear (577) are clamped and embedded in the inner rack (678).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210136252.1A CN114457761A (en) | 2022-02-15 | 2022-02-15 | Lifting type water conservancy gate structure for water conservancy project |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210136252.1A CN114457761A (en) | 2022-02-15 | 2022-02-15 | Lifting type water conservancy gate structure for water conservancy project |
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| Publication Number | Publication Date |
|---|---|
| CN114457761A true CN114457761A (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210136252.1A Pending CN114457761A (en) | 2022-02-15 | 2022-02-15 | Lifting type water conservancy gate structure for water conservancy project |
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| Country | Link |
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| CN (1) | CN114457761A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006118256A (en) * | 2004-10-22 | 2006-05-11 | Hokoku Kogyo Co Ltd | Chain cover, and sluice gate opening/closing device using the chain cover |
| CN211080142U (en) * | 2019-10-28 | 2020-07-24 | 崇义县水利电力建筑安装公司 | Over-and-under type water sluicegate for hydraulic engineering |
| CN211922534U (en) * | 2020-03-24 | 2020-11-13 | 符太玉 | Flood prevention device for hydraulic engineering |
| CN212200312U (en) * | 2020-03-03 | 2020-12-22 | 安徽省佳鑫建筑工程有限公司 | Gate for hydraulic engineering |
| CN212533987U (en) * | 2020-06-17 | 2021-02-12 | 沈颖 | Over-and-under type water sluicegate for hydraulic engineering |
| CN213086728U (en) * | 2020-04-02 | 2021-04-30 | 刘晓龙 | Water sluicegate |
-
2022
- 2022-02-15 CN CN202210136252.1A patent/CN114457761A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006118256A (en) * | 2004-10-22 | 2006-05-11 | Hokoku Kogyo Co Ltd | Chain cover, and sluice gate opening/closing device using the chain cover |
| CN211080142U (en) * | 2019-10-28 | 2020-07-24 | 崇义县水利电力建筑安装公司 | Over-and-under type water sluicegate for hydraulic engineering |
| CN212200312U (en) * | 2020-03-03 | 2020-12-22 | 安徽省佳鑫建筑工程有限公司 | Gate for hydraulic engineering |
| CN211922534U (en) * | 2020-03-24 | 2020-11-13 | 符太玉 | Flood prevention device for hydraulic engineering |
| CN213086728U (en) * | 2020-04-02 | 2021-04-30 | 刘晓龙 | Water sluicegate |
| CN212533987U (en) * | 2020-06-17 | 2021-02-12 | 沈颖 | Over-and-under type water sluicegate for hydraulic engineering |
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Application publication date: 20220510 |