CN109183732A - Hinge movable dam - Google Patents
Hinge movable dam Download PDFInfo
- Publication number
- CN109183732A CN109183732A CN201811056002.7A CN201811056002A CN109183732A CN 109183732 A CN109183732 A CN 109183732A CN 201811056002 A CN201811056002 A CN 201811056002A CN 109183732 A CN109183732 A CN 109183732A
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- Prior art keywords
- plunger
- hinge
- supporting
- section
- cylinder barrel
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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
- E02B7/44—Hinged-leaf gates
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Actuator (AREA)
Abstract
This application involves a kind of hinge movable dams, it includes pedestal and the hinged dam body of pedestal, hydraulic cylinder, support guide part, supporting element and pressure part, hydraulic cylinder includes that the cylinder barrel hinged with pedestal, opposite cylinder barrel carry out stretching motion and its end is provided with the plunger of hinge hole and across hinge hole and hinge axis that its opposite end connect with dam body respectively, hinge axis is arranged to and hinge hole opposite sliding in the telescopic direction of plunger；Support guide part is mounted on plunger and has adjustment hole；Supporting element is hinged with hinge axis, and has supporting section and the guide section across adjustment hole, and the side where one end to plunger of guide section tilts and connect with supporting section；Pressure part is mounted on cylinder barrel and has supporting surface；Support guide part be arranged to when plunger carries out stretching motion and guide section against and push guide section to the direction swing close to or far from plunger, to drive supporting section face contact or to separate with supporting.The program can guarantee degree in height of dam and extend the service life of hydraulic cylinder.
Description
Technical field
This application involves hydraulic engineering technical field more particularly to a kind of hinge movable dams.
Background technique
In recent years, due to the flexibility of hinge movable dam water level regulation, which is widely used in water
In sharp engineering, for realizing functions such as flood control, water storage, hydroelectric generations.
Currently, hinge movable dam generallys use hydraulic cylinder as hydraulic cylinder, to drive dam body to be gone up and down, and dam is being stayed
When (that is: dam body needs to keep specified altitude assignment to realize water blocking), which wants the pressure of moment holding resistance water load, it may be assumed that
The hydraulic cylinder needs to remain the working condition of support dam body, and therefore, which is easy to appear over fatigue and damages
Bad situation shortens the service life of hydraulic cylinder.
Summary of the invention
This application provides a kind of hinge movable dams can also extend the use of hydraulic cylinder while guaranteeing to spend in height of dam
Service life.
The hinge movable dam of the application comprising:
Pedestal；
Dam body, the dam body and the pedestal are hinged；
Hydraulic cylinder, the hydraulic cylinder include cylinder barrel, plunger and hinge axis, and the cylinder barrel and the pedestal are hinged, the column
Plug is arranged to the relatively described cylinder barrel and carries out stretching motion, and the end of the plunger is provided with hinge hole, and the hinge axis passes through
The hinge hole, and the opposite end of the hinge axis is hinged with the dam body respectively, the hinge axis is arranged to and the hinge
The opposite sliding in the telescopic direction of the plunger of chain hole；
Support guide part, the support guide part are mounted on the plunger, and the support guide part has adjustment hole；
Supporting element, the supporting element and the hinge axis are hinged, and the supporting element has guide section and supporting section, described to lead
It tilts to the side where one end of section to the plunger and is connect with the supporting section, and the guide section passes through the adjusting
Hole；
Pressure part, the pressure part are mounted on the cylinder barrel, and the pressure part has supporting surface；Wherein,
The support guide part is arranged to lean and push with the guide section when the plunger carries out stretching motion
The guide section to the direction swing close to or far from the plunger, to drive the supporting section to be in contact with the supporting surface or
Separation.
Optionally, the guide section and the supporting section are straightway, and the guide section and the supporting section tilt
Setting.
Optionally, the supporting surface has limiting slot, and the limiting slot, which is arranged to limit with the supporting section, to be cooperated.
Optionally, the limiting slot is arc groove.
Optionally, the pressure part includes interconnecting piece and pressure-bearing portion, and the interconnecting piece is connect with the cylinder barrel, the pressure-bearing
Portion is arranged on the interconnecting piece and protrudes to the direction far from the cylinder barrel, and the pressure-bearing portion has the supporting surface.
Optionally, the interconnecting piece is annular in shape, and the interconnecting piece is sleeved on the cylinder barrel.
Optionally, the inner wall of the interconnecting piece is provided with dentalation.
Optionally, the support guide part is located at the hinge hole close to the side of the cylinder barrel.
Optionally, the hinge hole is kidney slot, what the kidney slot was oppositely arranged in the telescopic direction of the plunger
Two sides is arc surface.
Technical solution provided by the present application can achieve it is following the utility model has the advantages that
Hinge movable dam provided herein, the plunger of hydraulic cylinder when itself carries out stretching motion with respect to cylinder barrel not
Can only dam body be driven to go up and down, but also can be adjusted between supporting element and pressure part by the support guide part being mounted on plunger
Positional relationship, specifically, during liter dam, support guide part can lean during plunger stretches out with guide section with
Guide section is pushed to swing to the direction close to plunger, so that supporting section is driven to be in contact with the supporting surface of pressure part, the pressure part
Play the role of supporting supporting element, to play support dam body, that is to say, that match by supporting element with pressure part
Dam body can be supported, to can guarantee degree in height of dam, it may be assumed that guarantee that dam body maintains specified altitude assignment always, to improve hinge
Movable dam flood control, water blocking effect, in addition, the supporting element can share liquid when supporting element matches with pressure part and to support dam body
Pressure suffered by cylinder pressure extends hydraulic cylinder the case where occurring over fatigue so as to relieving hydraulic cylinder and be damaged
Service life；During dropping dam, support guide part can lean during plunger retracts with guide section to push guiding
Section is swung to the direction far from plunger, so that supporting section be driven mutually to separate with the supporting surface of pressure part, reaches unlock supporting element
Purpose, to realize smoothly drop dam.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Application.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of hinge movable dam described in the embodiment of the present application；
Fig. 2 is the enlarged structure schematic diagram in the portion A shown in Fig. 1；
Fig. 3 is in hinge movable dam described in the embodiment of the present application, between hydraulic cylinder, support guide part and pressure part three
Structural schematic diagram after assembly；
Fig. 4 is in hinge movable dam described in the embodiment of the present application, between hydraulic cylinder, support guide part and pressure part three
Floor map after assembly.
Appended drawing reference:
10- pedestal；
20- dam body；
30- cylinder barrel；
31- plunger；
310- hinge hole；
32- hinge axis；
40- support guide part；
50- supporting element；
500- guide section；
501- supporting section；
60- pressure part；
600- interconnecting piece；
601- pressure-bearing portion；
6010- supporting surface.
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and together with specification it is used to explain the principle of the application.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and
It is not used in restriction the application.
In the description of the present application unless specifically defined or limited otherwise, term " first ", " second " and " third " are only
For descriptive purposes, it is not understood to indicate or imply relative importance；Term " multiple " refers to two or more；
Unless otherwise prescribed or illustrate, term " connection ", " fixation " etc. shall be understood in a broad sense, for example, " connection " can be fixed company
It connects, may be a detachable connection, or be integrally connected, or electrical connection；It can be directly connected, intermediary can also be passed through
It is indirectly connected.For the ordinary skill in the art, it can understand as the case may be above-mentioned term in the present invention
Concrete meaning.
In the description of this specification, it is to be understood that "upper", "lower" described in the embodiment of the present application, "left", "right"
The equal nouns of locality are described with angle shown in the drawings, should not be construed as the restriction to the embodiment of the present application.In addition,
In context, it is also necessary to which understanding can not only when mentioning an element and being connected to another element "upper" or "lower"
It is enough connected directly between another element "upper" or "lower", another element "upper" can also be indirectly coupled to by intermediary element
Or "lower".
The application in order to better understand carries out detailed below with reference to hinge movable dam of the Fig. 1 to Fig. 4 to the embodiment of the present application
Thin description.
Fig. 1 is the structural schematic diagram of hinge movable dam described in the embodiment of the present application；Fig. 2 is putting for the portion A shown in Fig. 1
Big structure schematic diagram；Fig. 3 is hydraulic cylinder, support guide part and pressure part three in hinge movable dam described in the embodiment of the present application
Structural schematic diagram after being assembled between person；Fig. 4 is hydraulic cylinder, support guide in hinge movable dam described in the embodiment of the present application
Floor map after being assembled between part and pressure part three.
In conjunction with shown in Fig. 1 to Fig. 4, the hinge movable dam of the present embodiment comprising pedestal 10, dam body 20, hydraulic cylinder, support
Guide part 40, supporting element 50 and pressure part 60.
Pedestal 10 is fixed on the reinforced concrete foundation of hinge movable dam.Dam body 20 can support on pedestal 10 and and base
Seat 10 is hinged, that is to say, that the dam body 20 can the rotation of opposite base 10；Hydraulic cylinder may include cylinder barrel 30, plunger 31 and hinge axis
32, the cylinder barrel 30 and pedestal 10 are hinged, it may be assumed that cylinder barrel 30 can opposite base 10 rotate, the end of plunger 31 is provided with hinge hole
310, and hinge axis 32 passes through hinge hole 310, and the opposite end of hinge axis 32 is hinged with dam body 20 respectively, to realize plunger 31
With the connection of dam body 20, and plunger 31 can with respect to cylinder barrel 30 carry out stretching motion, to realize the lifting of dam body 20, specifically,
When plunger 31 is stretched out with respect to cylinder barrel 30, which can drive dam body 20 to rise, when plunger 31 is retracted with respect to cylinder barrel 30, the column
Plug 31 can drive dam body 20 to decline.
In the present embodiment, the telescopic direction of the plunger 31 for being axially set in hydraulic cylinder of hinge axis 32 is mutually perpendicular to.And it cuts with scissors
Chain hole 310 is elongate holes, and the length direction of this elongate holes is the telescopic direction of plunger 31.In the telescopic direction of plunger 31
In (Z-direction as shown in Figure 4), the length of hinge hole 310 is greater than the diameter of axle of hinge axis 32, that is to say, that the hinge axis 32 can
The opposite sliding in the telescopic direction of plunger 31 with hinge hole 310, subsequent be described can be by hinge hole 310 in column for convenience
The two sides being oppositely arranged in the telescopic direction of plug 31 is positioned as abutment surface and lower pushing surface respectively, and the lower pushing surface is compared to above pushing away
Face can be slided closer to cylinder barrel 30, hinge axis 32 between abutment surface and lower pushing surface, in order to which support guide part 40 is in plunger 31
Stretching motion in adjust positional relationship between supporting element 50 and pressure part 60.
Wherein, support guide part 40 is mounted on plunger 31, which can move with plunger 31, and is propped up
Supportting guide part 40 has adjustment hole；Pressure part 60 is mounted on cylinder barrel 30, and the pressure part 60 has supporting surface 6010；And it supports
Part 50 and hinge axis 32 are hinged, and supporting element 50 has guide section 500 and a supporting section 501, and one end of the guide section 500 is to plunger
Side where 31 tilts and connect with supporting section 501, and guide section 500 passes through adjustment hole, which can be to guide section 500
Movement play restriction effect；Wherein, when plunger 31 carries out stretching motion, support guide part 40 can offset with guide section 500
It leans on and pushes guide section 500 to the direction swing close to or far from plunger 31, to drive supporting section 501 to connect with supporting surface 6010
Touching or separation.
From the foregoing it will be appreciated that hinge movable dam provided in this embodiment, the plunger 31 of hydraulic cylinder is at itself with respect to cylinder barrel 30
It carries out that dam body 20 can not only be driven to go up and down when stretching motion, but also can be by the support guide part 40 that is mounted on plunger 31
The positional relationship between supporting element 50 and pressure part 60 is adjusted, specifically, during liter dam, support guide part 40 can be in plunger
It leans during 31 stretchings with the lower guide surface of guide section 500 (that is: the face for deviating from plunger 31 on guide section 500) to push
Guide section 500 is swung to the direction close to plunger 31, so that supporting section 501 be driven to swing to the direction close to plunger 31, works as column
Plug 31 extend out to the lower pushing surface of its hinge hole 310 and when hinge axis 32 contacts, the supporting surface 6010 of supporting section 501 and pressure part 60
It is in contact, which plays the role of supporting supporting element 50, to play support dam body 20, that is to say, that logical
It crosses supporting element 50 and matches and dam body 20 can be supported with pressure part 60, to can guarantee degree in height of dam, it may be assumed that guarantee dam body 20
Always specified altitude assignment is maintained, to improve the effect of hinge movable dam flood control, water blocking, in addition, in supporting element 50 and pressure part 60
When matching support dam body 20, which can share pressure suffered by hydraulic cylinder, occur so as to relieving hydraulic cylinder
The case where spending fatigue and being damaged, extends the service life of hydraulic cylinder；During dropping dam, support guide part 40 can be in column
It leans during 31 retraction of plug with the upper guide surface (that is: towards the face of plunger 31 on guide section 500) of guide section 500 to push away
Action-oriented section 500 is swung to the direction far from plunger 31, to drive supporting surface 6010 phase point of the supporting section 501 with pressure part 60
From, achieve the purpose that unlock supporting element 50, when plunger 31 is retracted to the abutment surface of its hinge hole 310 and hinge axis 32 contacts,
The plunger 31 continues to bounce back, so that abutment surface pushes hinge axis 32 to move to the direction of cylinder barrel 30, to realize that dam body 20 declines.
It should be noted that pushing guide section 500 to the direction swing close to or far from plunger 31 in support guide part 40
When, which interferes.
Wherein, hinge axis 32 can be circular shaft, in order to be rotated between plunger 31 and hinge axis 32, to facilitate adjustment
Angle between plunger 31 and dam body 20, to realize the flexibility of the lifting of dam body 20.
In addition, hinge hole 310 can be designed as kidney slot, the length direction of this kidney slot when hinge axis 32 is circular shaft
For the telescopic direction of plunger 31, the two sides which is oppositely arranged in the telescopic direction of plunger 31 is arc surface, also
To say, the abutment surface and lower pushing surface being previously mentioned are arc surface, in this way can in 20 lifting process of dam body, increase plunger 31 with
The contact area of hinge axis 32 alleviates plunger 31 on driving dam so that the frictional force between plunger 31 and hinge axis 32 can be improved
The phenomenon that body 20 has skidded during going up and down with hinge axis 32, improves the stability in 20 lifting process of dam body, in addition,
Since the contact area between hinge axis 32 and lower pushing surface increases, plunger 31 can be improved in the stability of strutting system of when in dam.
As shown in Figure 3 and Figure 4, the guide section 500 of supporting element 50 and supporting section 501 can be straightway, and guide section 500
Be obliquely installed with supporting section 501, in this way design reduce supporting element 50 difficulty of processing while, can also reduce supporting element 50 with
Positioning between support guide part 40 and pressure part 60 assembles difficulty, so that the packaging efficiency of hinge movable dam can be improved.
Optionally, the tilt angle between the guide section 500 and supporting section 501 is obtuse angle, to guarantee degree in height of dam
Meanwhile reducing the occupied space of supporting element 50.
Wherein, which can be used Steel material and is made, and the supporting element 50 can be an integral structure, to guarantee
The structural strength of supporting element 50 improves stability of the supporting element 50 when supporting dam body 20.
It should be noted that at least one of the guide section 500 and supporting section 501 can also be segmental arc, depending on specific feelings
Depending on condition.
As shown in Figure 3 and Figure 4, aforementioned support guide part 40 is located at hinge hole 310 close to the side of cylinder barrel 30, it may be assumed that hinge
The lower pushing surface in hole 310 is between support guide part 40 and the abutment surface of hinge hole 310, and design is compared to by support guide in this way
The design of part 40 deviates from the side of cylinder barrel 30 in hinge hole 310, reduces between support guide part 40 and plunger 31 and supporting element 50
Assembly difficulty, and guarantee spent in height of dam while, can also reduce size of the support rod in the telescopic direction of plunger 31, drop
The low production cost of hinge movable dam, in addition, also can be relieved the process that support guide part 40 carries out stretching motion in plunger 31
In the case where being interfered with dam body 20.
As shown in Figure 3 and Figure 4, pressure part 60 may include interconnecting piece 600 and pressure-bearing portion 601, the interconnecting piece 600 and cylinder barrel 30
Connection, and pressure-bearing portion 601 is arranged on interconnecting piece 600 and protrudes to the direction far from cylinder barrel 30, which has can
Support the supporting surface 6010 of supporting section 501.In the present embodiment, by the way that the protrusion of pressure-bearing portion 601 is set to interconnecting piece 600, in this way
It designs while reducing the material cost of pressure part 60, can also increase the area of supporting surface 6010, to can guarantee supporting element
50 are stablely supported on pressure part 60.
It should be noted that the interconnecting piece 600 can be connect with cylinder barrel 30 for integral type, the structure to guarantee pressure part 60 is strong
Degree.
Wherein, interconnecting piece 600 can be annular in shape, which is sleeved on cylinder barrel 30, to guarantee pressure part 60 and cylinder barrel
30 connection area then guarantees that supporting element 50 is steady in when in dam to guarantee the connective stability of pressure part 60 Yu cylinder barrel 30
Surely dam body 20 is supported.
It, can in order to increase the frictional force between interconnecting piece 600 and cylinder barrel 30 when interconnecting piece 600 is sleeved on cylinder barrel 30
The inner wall of interconnecting piece 600 is provided with dentalation, which can connect occlusion with cylinder barrel 30, sufficiently large to provide
Frictional force guarantees the connective stability of pressure part 60 and cylinder barrel 30, to guarantee that supporting element 50 steadily supports dam in when in dam
Body 20.
In the present embodiment, in order to guarantee that supporting element 50 steadily supports dam body 20, the supporting surface 6010 of the pressure part 60 is also
It can be equipped with limiting slot (not shown), which, which is arranged to limit with supporting section 501, cooperates, specifically, in supporting element 50
When supporting dam body 20, supporting section 501 is supported in the limiting slot, which plays the role of limited support part 50, to prevent
The case where only supporting element 50 has skidded phenomenon between supporting surface 6010 when supporting dam body 20 and is detached from supporting surface 6010, mentions
The high stability of strutting system of supporting element 50.
Optionally, which is arc limit slot, not only can play the work of limited support part 50 in when in dam
With, but also facilitate support guide part 40 that supporting element 50 is pushed to skid off limiting slot when dropping dam, to realize that supporting element 50 unlocks.
Wherein, in order to increase the frictional force between supporting element 50 and supporting surface 6010, the supporting surface 6010 can be also arranged
At rough surface.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (9)
1. a kind of hinge movable dam characterized by comprising
Pedestal；
Dam body, the dam body and the pedestal are hinged；
Hydraulic cylinder, the hydraulic cylinder include cylinder barrel, plunger and hinge axis, and the cylinder barrel and the pedestal are hinged, and the plunger is set
It is set to the relatively described cylinder barrel and carries out stretching motion, and the end of the plunger is provided with hinge hole, the hinge axis passes through described
Hinge hole, and the opposite end of the hinge axis is hinged with the dam body respectively, the hinge axis is arranged to and the hinge hole
The opposite sliding in the telescopic direction of the plunger；
Support guide part, the support guide part are mounted on the plunger, and the support guide part has adjustment hole；
Supporting element, the supporting element and the hinge axis are hinged, and the supporting element has guide section and supporting section, the guide section
One end to the plunger where side tilt and connect with the supporting section, and the guide section is across the adjustment hole；
Pressure part, the pressure part are mounted on the cylinder barrel, and the pressure part has supporting surface；Wherein,
The support guide part is arranged to lean when the plunger carries out stretching motion with the guide section and push described
Guide section is to the direction swing close to or far from the plunger, to drive the supporting section to be in contact or divide with the supporting surface
From.
2. hinge movable dam according to claim 1, which is characterized in that the guide section and the supporting section are straight line
Section, and the guide section is obliquely installed with the supporting section.
3. hinge movable dam according to claim 1, which is characterized in that the supporting surface has limiting slot, the limit
Slot, which is arranged to limit with the supporting section, to be cooperated.
4. hinge movable dam according to claim 3, which is characterized in that the limiting slot is arc groove.
5. hinge movable dam according to claim 1, which is characterized in that the pressure part includes interconnecting piece and pressure-bearing portion,
The interconnecting piece is connect with the cylinder barrel, and the pressure-bearing portion is arranged on the interconnecting piece and convex to the direction far from the cylinder barrel
Out, and the pressure-bearing portion has the supporting surface.
6. hinge movable dam according to claim 5, which is characterized in that the interconnecting piece is annular in shape, the interconnecting piece set
On the cylinder barrel.
7. hinge movable dam according to claim 6, which is characterized in that the inner wall of the interconnecting piece is provided with dentation knot
Structure.
8. hinge movable dam according to claim 1, which is characterized in that
The support guide part is located at the hinge hole close to the side of the cylinder barrel.
9. hinge movable dam according to any one of claim 1 to 8, which is characterized in that the hinge hole is kidney slot,
The two sides that the kidney slot is oppositely arranged in the telescopic direction of the plunger is arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811056002.7A CN109183732B (en) | 2018-09-11 | 2018-09-11 | Hinge movable dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811056002.7A CN109183732B (en) | 2018-09-11 | 2018-09-11 | Hinge movable dam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109183732A true CN109183732A (en) | 2019-01-11 |
| CN109183732B CN109183732B (en) | 2020-07-28 |
Family
ID=64910144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811056002.7A Active CN109183732B (en) | 2018-09-11 | 2018-09-11 | Hinge movable dam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109183732B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095553A (en) * | 2020-09-18 | 2020-12-18 | 王梦真 | Movable dam installation and construction system flexible and convenient to use |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110066019A (en) * | 2009-12-10 | 2011-06-16 | 일성보산업(주) | Multi-lock type for moving gate |
| CN103911975A (en) * | 2014-04-28 | 2014-07-09 | 牛菊香 | Movable dam |
| CN105603938A (en) * | 2016-02-22 | 2016-05-25 | 中国水利水电科学研究院 | Hinge dam |
| CN206616533U (en) * | 2016-12-12 | 2017-11-07 | 扬州楚门机电设备制造有限公司 | Dam |
-
2018
- 2018-09-11 CN CN201811056002.7A patent/CN109183732B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110066019A (en) * | 2009-12-10 | 2011-06-16 | 일성보산업(주) | Multi-lock type for moving gate |
| CN103911975A (en) * | 2014-04-28 | 2014-07-09 | 牛菊香 | Movable dam |
| CN105603938A (en) * | 2016-02-22 | 2016-05-25 | 中国水利水电科学研究院 | Hinge dam |
| CN206616533U (en) * | 2016-12-12 | 2017-11-07 | 扬州楚门机电设备制造有限公司 | Dam |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095553A (en) * | 2020-09-18 | 2020-12-18 | 王梦真 | Movable dam installation and construction system flexible and convenient to use |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109183732B (en) | 2020-07-28 |
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