CN208884335U - Fluid pressure type limiting device - Google Patents
Fluid pressure type limiting device Download PDFInfo
- Publication number
- CN208884335U CN208884335U CN201821446986.5U CN201821446986U CN208884335U CN 208884335 U CN208884335 U CN 208884335U CN 201821446986 U CN201821446986 U CN 201821446986U CN 208884335 U CN208884335 U CN 208884335U
- Authority
- CN
- China
- Prior art keywords
- plunger
- piston
- side wall
- connecting plate
- check valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model belongs to technical field of building construction, more particularly to a kind of fluid pressure type limiting device, including bridge floor, bridge pier, plunger connecting plate, connection bolt, plunger, plug thick stick, plunger case, piston cylinder, plug thick stick intermediate plate, piston connecting plate, piston support column, piston, flow into check valve, outflow check valve, ball, spring, one-way pipeline, fluid reservoir；The utility model structure can the factorial production, installation is simple, saves cost, and long service life reduces maintenance work, and highly-safe, structure is not easy to wear, good economy performance.
Description
Technical field
The utility model belongs to technical field of building construction, more particularly to a kind of fluid pressure type limiting device.
Background technique
China is vast in territory, and bridge construction is the important cause in China, and bridge earthquake resistance is the most important thing.With China's traffic
No matter the rapid development of building cause, bridge quantitatively or on development length all exist as the multi-purpose project in traffic lines
Rapid growth.And China is an earthquake-prone countries, bridge once falls beam destruction in earthquake will make the entire network of communication lines
Network paralyses.
Bridges in Our Country Aseismic Design is mainly to emphasize the intensity of pier body, and pier body how to be made not collapse in earthquake.Institute
Mainly beam falling prevention stopping block is fixedly installed on pier body in the anti-fall beam construction used, by the length travel amount of beam body and lateral position
Shifting amount controls in a certain range.But contacted due to lacking between beam body and pier body, beam body and beam body, when earthquake intensity is higher
Earthquake come when attacking, the impact acutely shaken by beam body, beam falling prevention stopping block easily occurs failure by shear and fails, it is broken that generation falls beam
It is bad.
Currently, the bridge limiting device that China uses is mostly rubber pad, rubber pad drawback is larger, if can improve device, bridge
Beam limit, which will be, greatly to be promoted.
Utility model content
In order to solve above-mentioned technical problem, the utility model provides a kind of fluid pressure type limiting device, mainly for
Develop a kind of highly-safe, saving cost, easy for installation, bridge earthquake resistance device with long service life.
The technical solution adopted in the utility model is as follows:
A kind of fluid pressure type limiting device is located at bridge lateral, and at the 20-30cm of bridge floor both sides of the edge, plunger connects for left and right
It is close to bridge floor bottom surface the top surface of fishplate bar；At four angles of plunger connecting plate, connection bolt passes perpendicularly through plunger connecting plate and bridge
The bottom surface in face, and extend to 5-8cm in bridge floor；Plunger top surface is connect with plunger connecting plate bottom surface；Thick stick is filled in by plunger case and piston
Cylinder composition is connected between plunger case and piston cylinder by plug thick stick intermediate plate, the fixed plunger of plunger case, in plunger case side wall, plug thick stick
Between plate top surface respectively with plunger sidewall, plunger bottom surface closely；At plunger case left side wall, distance plug thick stick intermediate plate 2-3cm, edge
One-way pipeline and outflow check valve is arranged in vertical direction from top to bottom, and one-way pipeline is suitable for reading to be connect with plunger case left side wall, unidirectionally
Mouth is connect with piston cylinder left side wall under pipeline, and check valve is suitable for reading connect with plunger case left side wall for outflow, under outflow check valve mouth and
The connection of piston cylinder left side wall；Positioned at plunger case right side wall, fluid reservoir is set, fluid reservoir is close to connection, storage with plunger case right side wall
Flow container top distance plug thick stick intermediate plate 5-6cm；In piston cylinder, flows into check valve and pass perpendicularly through piston cylinder right side wall, fluid reservoir
Left side wall, and be inserted into fluid reservoir, check valve is flowed into apart from fluid reservoir bottom surface 1-2cm；The fixed piston of piston cylinder, piston cylinder side
Wall, plug thick stick intermediate plate bottom surface respectively with piston side wall, piston bottom surface closely；Piston support column one end is connect with piston, piston branch
The dagger other end is connect with piston connecting plate, and piston connecting plate bottom surface is close to bridge pier top surface；At four angles of piston connecting plate,
Connection bolt passes perpendicularly through piston connecting plate and bridge pier top surface, and extends to 5-8cm in bridge pier.
Further, the plunger connecting plate top and bottom shape is square, side length 20-25cm, thickness 0.8-
1.0cm。
Further, the plunger is cylindrical body, diameter 15-18cm, height 5-6cm；By thickness outside the plunger
The thin wall cylindrical for spending 0.8-1.0cm is surrounded, and inside forms cavity.
Further, the plug thick stick wall thickness 1.0-1.2cm, plug thick stick intermediate plate thickness are 1.5-1.8cm.
Further, the piston connecting plate top and bottom shape is square, side length 20-25cm, thickness 0.8-
1.0cm。
Further, the piston exterior is surrounded by the thin wall cylindrical of thickness 0.8-1.0cm, and inside forms cavity.
Further, the head for flowing into check valve and flowing out check valve is bullet shape, is equipped with rolling in cavity
Pearl is located at bullet mouth, and two springs are connect with ball.
Further, the liquid storage tank volume is 10-15 square centimeters.
Earthquake arrives, and seismic wave transfers energy to bridge pier, and energy transmission piston, piston are generated upper and lower displacement by bridge pier.
When piston moves up, air pressure opening flows into check valve, and liquid flows into check valve out of fluid reservoir, and then flows to
Piston face enters plunger case from half-duplex channel, and liquid jacks up plunger, and when piston moves down, air pressure opens stream
Check valve out, liquid is from outflow check valve outflow in plunger case, and then flows to piston face.
The beneficial effects of the utility model and advantage:
The utility model structure can the factorial production, installation is simple, saves cost, and long service life reduces maintenance work,
Highly-safe, structure is not easy to wear, good economy performance.
Detailed description of the invention
Fig. 1 is the bridge lateral sectional view of the utility model.
Fig. 2 is the Section A-A figure of Fig. 1 in the utility model.
Fig. 3 is the section B-B figure of Fig. 1 in the utility model.
Fig. 4 is that utility model device works up schematic diagram.
Fig. 5 is the downward operation schematic diagram of utility model device.
Fig. 6 is the structural scheme of mechanism for flowing into check valve in the utility model and flowing out check valve.
In figure, 1 is bridge floor；2 be bridge pier；3 be plunger connecting plate；4 be connection bolt；5 be plunger；6 be plug thick stick；6-1 is
Plunger case；6-2 is piston cylinder；6-3 is plug thick stick intermediate plate；7 be piston connecting plate；8 be piston support column；9 be piston；10 be stream
Inflow check valve；11 be outflow check valve；11-1 is ball；11-2 is spring；12 be one-way pipeline；13 be fluid reservoir.
Specific embodiment
In order to further illustrate the utility model, the utility model is retouched in detail with reference to the accompanying drawings and embodiments
It states, but they cannot be interpreted as to the restriction to scope of protection of the utility model.
Embodiment 1
As shown in Fig. 1 ~ 5, a kind of fluid pressure type limiting device is located at bridge lateral, and left and right is apart from 1 both sides of the edge 20cm of bridge floor
Place, the top surface of plunger connecting plate 3 is close to 1 bottom surface of bridge floor；At 3 four angles of plunger connecting plate, connection bolt 4 passes perpendicularly through column
The bottom surface of connecting plate 3 and bridge floor 1 is filled in, and extends to 5cm in bridge floor 1；5 top surface of plunger is connect with 3 bottom surface of plunger connecting plate；Fill in thick stick
6 are made of plunger case 6-1 and piston cylinder 6-2, pass through plug thick stick intermediate plate 6-3 connection, column between plunger case 6-1 and piston cylinder 6-2
The fixed plunger 5 of plug cylinder 6-1, plunger case 6-1 side wall, the plug top surface thick stick intermediate plate 6-3 are tight with 5 side wall of plunger, 5 bottom surface of plunger respectively
It suffers；It is filled at the 2cm of thick stick intermediate plate 6-3 positioned at plunger case 6-1 left side wall, distance, uniguide is set from top to bottom along the vertical direction
Road 12 and outflow check valve 11, one-way pipeline 12 is suitable for reading to be connect with plunger case 6-1 left side wall, the lower mouth of one-way pipeline 12 and piston cylinder
The connection of 6-2 left side wall, check valve 11 is suitable for reading connect with plunger case 6-1 left side wall for outflow, flows out check valve 11 and descends mouth and piston cylinder
The connection of 6-2 left side wall；Positioned at plunger case 6-1 right side wall, fluid reservoir 13 is set, fluid reservoir 13 is close to plunger case 6-1 right side wall
Connection, the 5cm of 13 top of fluid reservoir distance plug thick stick intermediate plate 6-3；In piston cylinder 6-2, flows into check valve 10 and pass perpendicularly through work
Plug cylinder 6-2 right side wall, 13 left side wall of fluid reservoir, and be inserted into fluid reservoir 13, check valve 10 is flowed into apart from 13 bottom surface of fluid reservoir
1cm；The fixed piston 9 of piston cylinder 6-2, piston cylinder 6-2 side wall, plug the bottom surface thick stick intermediate plate 6-3 respectively with 9 side wall of piston, 9 bottom of piston
Face is closely；8 one end of piston support column is connect with piston 9, and 8 other end of piston support column is connect with piston connecting plate 7, piston connection
It is close to 2 top surface of bridge pier 7 bottom surface of plate；At 7 four angles of piston connecting plate, connection bolt 4 passes perpendicularly through piston connecting plate 7 and bridge
2 top surface of pier, and extend to 5cm in bridge pier 2；The 3 top and bottom shape of plunger connecting plate is square, side length 20cm,
Thickness 0.8cm；The plunger 5 is cylindrical body, diameter 15cm, height 5cm；By the thin of thickness 0.8cm outside the plunger 5
Wall cylinder surrounds, and inside forms cavity；The 6 wall thickness 1.0cm of plug thick stick fills in thick stick intermediate plate 6-3 with a thickness of 1.5cm；Described
7 top and bottom shape of piston connecting plate is square, side length 20cm, thickness 0.8cm；By thickness outside the piston 9
The thin wall cylindrical of 0.8cm is surrounded, and inside forms cavity；13 volume of fluid reservoir is 10 square centimeters.
As shown in fig. 6, the head for flowing into check valve 10 and flowing out check valve 11 is bullet shape, set in cavity
There is ball 11-1 to be located at bullet mouth, two spring 11-2 are connect with ball 11-1.
Embodiment 2
As shown in Fig. 1 ~ 5, a kind of fluid pressure type limiting device is located at bridge lateral, and left and right is apart from 1 both sides of the edge 25cm of bridge floor
Place, the top surface of plunger connecting plate 3 is close to 1 bottom surface of bridge floor；At 3 four angles of plunger connecting plate, connection bolt 4 passes perpendicularly through column
The bottom surface of connecting plate 3 and bridge floor 1 is filled in, and extends to 6.5cm in bridge floor 1；5 top surface of plunger is connect with 3 bottom surface of plunger connecting plate；Plug
Thick stick 6 is made of plunger case 6-1 and piston cylinder 6-2, by filling in thick stick intermediate plate 6-3 connection between plunger case 6-1 and piston cylinder 6-2,
The fixed plunger 5 of plunger case 6-1, plunger case 6-1 side wall, the plug top surface thick stick intermediate plate 6-3 are tight with 5 side wall of plunger, 5 bottom surface of plunger respectively
It suffers；It is filled at the 2.5cm of thick stick intermediate plate 6-3 positioned at plunger case 6-1 left side wall, distance, setting is unidirectional from top to bottom along the vertical direction
Pipeline 12 and outflow check valve 11, one-way pipeline 12 is suitable for reading to be connect with plunger case 6-1 left side wall, the lower mouth of one-way pipeline 12 and piston
The connection of cylinder 6-2 left side wall, check valve 11 is suitable for reading connect with plunger case 6-1 left side wall for outflow, flows out check valve 11 and descends mouth and piston
The connection of cylinder 6-2 left side wall；Positioned at plunger case 6-1 right side wall, fluid reservoir 13 is set, and fluid reservoir 13 and plunger case 6-1 right side wall are tight
Patch connection, the 5.5cm of 13 top of fluid reservoir distance plug thick stick intermediate plate 6-3；In piston cylinder 6-2, flows into check valve 10 and vertically wear
Piston cylinder 6-2 right side wall, 13 left side wall of fluid reservoir are crossed, and is inserted into fluid reservoir 13, flows into check valve 10 apart from 13 bottom of fluid reservoir
Face 1.5cm；The fixed piston 9 of piston cylinder 6-2, piston cylinder 6-2 side wall, plug the bottom surface thick stick intermediate plate 6-3 respectively with 9 side wall of piston, work
Fill in 9 bottom surfaces closely；8 one end of piston support column is connect with piston 9, and 8 other end of piston support column is connect with piston connecting plate 7, living
It is close to 2 top surface of bridge pier plug 7 bottom surface of connecting plate；At 7 four angles of piston connecting plate, connection bolt 4 passes perpendicularly through piston connection
2 top surface of plate 7 and bridge pier, and extend to 6.5cm in bridge pier 2；The 3 top and bottom shape of plunger connecting plate is square,
Side length 25cm, thickness 0.9cm；The plunger 5 is cylindrical body, diameter 16.5cm, height 5.5cm；Outside the plunger 5 by
The thin wall cylindrical of thickness 0.9cm is surrounded, and inside forms cavity；The 6 wall thickness 1.1cm of plug thick stick, fill in thick stick intermediate plate 6-3 with a thickness of
1.65cm；The 7 top and bottom shape of piston connecting plate is square, side length 25cm, thickness 0.9cm；The piston 9
Outside is surrounded by the thin wall cylindrical of thickness 0.9cm, and inside forms cavity；13 volume of fluid reservoir is 12.5 square centimeters.
As shown in fig. 6, the head for flowing into check valve 10 and flowing out check valve 11 is bullet shape, set in cavity
There is ball 11-1 to be located at bullet mouth, two spring 11-2 are connect with ball 11-1.
Embodiment 3
As shown in Fig. 1 ~ 5, a kind of fluid pressure type limiting device is located at bridge lateral, and left and right is apart from 1 both sides of the edge 30cm of bridge floor
Place, the top surface of plunger connecting plate 3 is close to 1 bottom surface of bridge floor；At 3 four angles of plunger connecting plate, connection bolt 4 passes perpendicularly through column
The bottom surface of connecting plate 3 and bridge floor 1 is filled in, and extends to 8cm in bridge floor 1；5 top surface of plunger is connect with 3 bottom surface of plunger connecting plate；Fill in thick stick
6 are made of plunger case 6-1 and piston cylinder 6-2, pass through plug thick stick intermediate plate 6-3 connection, column between plunger case 6-1 and piston cylinder 6-2
The fixed plunger 5 of plug cylinder 6-1, plunger case 6-1 side wall, the plug top surface thick stick intermediate plate 6-3 are tight with 5 side wall of plunger, 5 bottom surface of plunger respectively
It suffers；It is filled at the 3cm of thick stick intermediate plate 6-3 positioned at plunger case 6-1 left side wall, distance, uniguide is set from top to bottom along the vertical direction
Road 12 and outflow check valve 11, one-way pipeline 12 is suitable for reading to be connect with plunger case 6-1 left side wall, the lower mouth of one-way pipeline 12 and piston cylinder
The connection of 6-2 left side wall, check valve 11 is suitable for reading connect with plunger case 6-1 left side wall for outflow, flows out check valve 11 and descends mouth and piston cylinder
The connection of 6-2 left side wall；Positioned at plunger case 6-1 right side wall, fluid reservoir 13 is set, fluid reservoir 13 is close to plunger case 6-1 right side wall
Connection, the 6cm of 13 top of fluid reservoir distance plug thick stick intermediate plate 6-3；In piston cylinder 6-2, flows into check valve 10 and pass perpendicularly through work
Plug cylinder 6-2 right side wall, 13 left side wall of fluid reservoir, and be inserted into fluid reservoir 13, check valve 10 is flowed into apart from 13 bottom surface of fluid reservoir
2cm；The fixed piston 9 of piston cylinder 6-2, piston cylinder 6-2 side wall, plug the bottom surface thick stick intermediate plate 6-3 respectively with 9 side wall of piston, 9 bottom of piston
Face is closely；8 one end of piston support column is connect with piston 9, and 8 other end of piston support column is connect with piston connecting plate 7, piston connection
It is close to 2 top surface of bridge pier 7 bottom surface of plate；At 7 four angles of piston connecting plate, connection bolt 4 passes perpendicularly through piston connecting plate 7 and bridge
2 top surface of pier, and extend to 8cm in bridge pier 2；The 3 top and bottom shape of plunger connecting plate is square, side length 25cm,
Thickness 1.0cm；The plunger 5 is cylindrical body, diameter 18cm, height 6cm；By the thin of thickness 1.0cm outside the plunger 5
Wall cylinder surrounds, and inside forms cavity；The 6 wall thickness 1.2cm of plug thick stick fills in thick stick intermediate plate 6-3 with a thickness of 1.8cm；Described
7 top and bottom shape of piston connecting plate is square, side length 25cm, thickness 1.0cm；By thickness outside the piston 9
The thin wall cylindrical of 1.0cm is surrounded, and inside forms cavity；13 volume of fluid reservoir is 15 square centimeters.
As shown in fig. 6, the head for flowing into check valve 10 and flowing out check valve 11 is bullet shape, set in cavity
There is ball 11-1 to be located at bullet mouth, two spring 11-2 are connect with ball 11-1.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of fluid pressure type limiting device, it is characterised in that: be located at bridge lateral, left and right is apart from bridge floor (1) both sides of the edge 20-
At 30cm, the top surface of plunger connecting plate (3) is close to bridge floor (1) bottom surface；At (3) four angles of plunger connecting plate, bolt is connected
(4) bottom surface of plunger connecting plate (3) and bridge floor (1) is passed perpendicularly through, and extends to bridge floor (1) interior 5-8cm；Plunger (5) top surface with
The connection of plunger connecting plate (3) bottom surface；Plug thick stick (6) is made of plunger case (6-1) and piston cylinder (6-2), plunger case (6-1) and piston
Pass through plug thick stick intermediate plate (6-3) connection, plunger case (6-1) fixed plunger (5), plunger case (6-1) side wall, plug between cylinder (6-2)
The top surface thick stick intermediate plate (6-3) respectively with plunger (5) side wall, plunger (5) bottom surface closely；Positioned at plunger case (6-1) left side wall, distance
It fills at thick stick intermediate plate (6-3) 2-3cm, one-way pipeline (12) and outflow check valve (11) is set from top to bottom along the vertical direction, it is single
It is connect to pipeline (12) is suitable for reading with plunger case (6-1) left side wall, mouth and piston cylinder (6-2) left side wall connect under one-way pipeline (12)
It connects, check valve (11) are suitable for reading connect with plunger case (6-1) left side wall for outflow, flow out mouth and piston cylinder (6-2) under check valve (11)
Left side wall connection；Positioned at plunger case (6-1) right side wall, it is arranged fluid reservoir (13), fluid reservoir (13) and plunger case (6-1) right side wall
It is close to connection, fluid reservoir (13) top distance plug thick stick intermediate plate (6-3) 5-6cm；In piston cylinder (6-2), check valve is flowed into
(10) piston cylinder (6-2) right side wall, fluid reservoir (13) left side wall are passed perpendicularly through, and is inserted into fluid reservoir (13), check valve is flowed into
(10) apart from fluid reservoir (13) bottom surface 1-2cm；Piston cylinder (6-2) fixed piston (9), piston cylinder (6-2) side wall, plug thick stick intermediate plate
The bottom surface (6-3) respectively with piston (9) side wall, piston (9) bottom surface closely；Piston support column (8) one end is connect with piston (9), living
Plug support column (8) other end is connect with piston connecting plate (7), and piston connecting plate (7) bottom surface is close to bridge pier (2) top surface；In work
It fills at (7) four angles of connecting plate, connection bolt (4) passes perpendicularly through piston connecting plate (7) and bridge pier (2) top surface, and extends to bridge
Pier (2) interior 5-8cm.
2. a kind of fluid pressure type limiting device according to claim 1, it is characterised in that: plunger connecting plate (3) top
Face and bottom shape are square, side length 20-25cm, thickness 0.8-1.0cm.
3. a kind of fluid pressure type limiting device according to claim 1, it is characterised in that: the plunger (5) is cylindrical body,
Diameter 15-18cm, height 5-6cm；The external thin wall cylindrical by thickness 0.8-1.0cm of the plunger (5) is surrounded, and inside is formed
Cavity.
4. a kind of fluid pressure type limiting device according to claim 1, it is characterised in that: described plug thick stick (6) the wall thickness 1.0-
1.2cm fills in thick stick intermediate plate (6-3) with a thickness of 1.5-1.8cm.
5. a kind of fluid pressure type limiting device according to claim 1, it is characterised in that: piston connecting plate (7) top
Face and bottom shape are square, side length 20-25cm, thickness 0.8-1.0cm.
6. a kind of fluid pressure type limiting device according to claim 1, it is characterised in that: the piston (9) is external by thickness
The thin wall cylindrical for spending 0.8-1.0cm is surrounded, and inside forms cavity.
7. a kind of fluid pressure type limiting device according to claim 1, it is characterised in that: it is described flow into check valve (10) and
The head for flowing out check valve (11) is bullet shape, is equipped with ball (11-1) in cavity and is located at bullet mouth, two springs
(11-2) is connect with ball (11-1).
8. a kind of fluid pressure type limiting device according to claim 1, it is characterised in that: described fluid reservoir (13) volume is
10-15 square centimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821446986.5U CN208884335U (en) | 2018-09-05 | 2018-09-05 | Fluid pressure type limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821446986.5U CN208884335U (en) | 2018-09-05 | 2018-09-05 | Fluid pressure type limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208884335U true CN208884335U (en) | 2019-05-21 |
Family
ID=66511262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821446986.5U Expired - Fee Related CN208884335U (en) | 2018-09-05 | 2018-09-05 | Fluid pressure type limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208884335U (en) |
-
2018
- 2018-09-05 CN CN201821446986.5U patent/CN208884335U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202330232U (en) | Device for testing permeability coefficient of pervious concrete | |
| CN201095730Y (en) | Lifting deceleration frusta | |
| CN203412623U (en) | Bottom plate water drainage pump drainage device | |
| CN208884335U (en) | Fluid pressure type limiting device | |
| CN105672370B (en) | A kind of underground engineering water pressure control system | |
| CN109024245A (en) | Fluid pressure type limiting device | |
| CN108442190A (en) | Support post for empty iron system and empty iron system | |
| CN201850539U (en) | Large-well variable-cross-section restricted-orifice surge chamber for water supply system of hydropower station | |
| CN209114493U (en) | A kind of bridge pile foundation pier integral structure | |
| CN101266192A (en) | Liquid level variable constant pressure water supply system | |
| CN213061813U (en) | Full-automatic hydraulic lifting column road pile | |
| CN207331858U (en) | A kind of capsule type air-pressure tank and water system | |
| CN201513154U (en) | Water distribution packer, setting core and water distribution core | |
| CN212270660U (en) | Novel self-adjusting support structure system suitable for movable bridge | |
| CN209005548U (en) | Chlorine tail gas recycle absorption plant | |
| CN209430355U (en) | Grouting pump hydraulic drive cylinder | |
| CN210562013U (en) | Hydraulic engineering rapid trough | |
| CN112343002A (en) | Flood control device and flood control method | |
| CN208546152U (en) | Well cementation self-oscillation float collar | |
| CN207452705U (en) | A kind of bridge rhone with deodorant function | |
| CN105089096B (en) | Reduce pressure water system for down-hole | |
| CN105714841A (en) | Siphon drainage device for geological crack | |
| CN206942197U (en) | House hydraulic pressure entirety lifting apparatus | |
| CN204237691U (en) | Prefabrication type reinforced concrete septic tank | |
| CN204238319U (en) | A kind of water intaking valve structure-improved with counterweight tank list keg float |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190521 Termination date: 20210905 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |