CN209508967U - Casing - Google Patents
Casing Download PDFInfo
- Publication number
- CN209508967U CN209508967U CN201821382549.1U CN201821382549U CN209508967U CN 209508967 U CN209508967 U CN 209508967U CN 201821382549 U CN201821382549 U CN 201821382549U CN 209508967 U CN209508967 U CN 209508967U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- clamping block
- block
- clamping
- bayonet
- 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
- Revetment (AREA)
Abstract
The utility model provides a kind of casing, including upper cylinder, middle cylinder and lower cylinder, the upper cylinder, the middle cylinder and the lower cylinder are cascading from top to bottom, the lower end of the upper cylinder is equipped with the first clamping block, the lower end of first clamping block is equipped with the first clamping block, first clamping block is equipped with the first bayonet far from the side of the upper cylinder, the upper end of the middle cylinder corresponds to first clamping block equipped with the first clip assembly, first clamping block is engaged by clamping by first bayonet and the clip assembly, the lower end of the middle cylinder is equipped with the second clamping block, the lower end of second clamping block is equipped with the second clamping block, second clamping block is equipped with the second bayonet far from the side of the middle cylinder, the upper end of the lower cylinder corresponds to second clamping block equipped with the second clip assembly, second clamping block passes through second bayonet and the card Connected components are engaged by clamping.The utility model proposes casing, length can change according to practice of construction demand.
Description
Technical field
The utility model relates to bored pile construction apparatus field, in particular to a kind of casing.
Background technique
With the propulsion of China's infrastructure, the development of beam bridge construction industry is swift and violent.Science of bridge building foundation construction quality is to bridge
The total quality of beam plays very important effect.Common technology of the bored pile construction as science of bridge building foundation construction,
Its construction is simple and technical maturity, play and its important role in bridge construction.
It when the construction of underwater directional vehicle, needs to bury casing in riverbed, the stake bored needed for positioning by casing
Position, so as to the molding and positioning of bored concrete pile, in addition casing can also protect aperture, maintain head height.
In the actual construction process, since its height of water level of different rivers differs larger, in different rivers,
Often also inconsistent to the requirement for height of casing, existing casing is integrated chemical conversion type, and height can not change, and does not adapt to not
Same river, therefore in the construction of different rivers, it generally requires to remake casing, causes the waste of casing.
Utility model content
Based on this, it is highly immutable that purpose of the utility model is to solve existing casings, does not adapt to different rivers
The problem of.
The utility model provides a kind of casing, including sequentially connected upper cylinder, middle cylinder and lower cylinder from top to bottom, the upper cylinder
Lower end be equipped with the first clamping block, first clamping block far from the upper cylinder be equipped with the first bayonet, the upper end pair of the middle cylinder
First clamping block is answered to be equipped with the first clip assembly, first clip assembly and first bayonet are engaged by clamping, described
The lower end of middle cylinder be equipped with the second clamping block, second clamping block far from the middle cylinder be equipped with the second bayonet, the lower cylinder it is upper
Corresponding second clamping block in end is equipped with the second clip assembly, and second clip assembly and second bayonet are engaged by clamping.
The utility model has the beneficial effects that the first clip assembly that the first clamping block and middle cylinder that upper cylinder is equipped with are equipped with
Clamping, the second clip assembly that the second clamping block and lower cylinder that middle cylinder is equipped with are equipped with are clamped, and pass through the clamping of this stacking
Upper cylinder, middle cylinder and lower cylinder are connected, since the top and bottom of middle cylinder are respectively equipped with clip assembly and clamping block, in
It can also be connected with each other between cylinder, in different rivers, according to the difference of its height, be connected between upper cylinder and lower cylinder different
The middle cylinder of quantity, the height of casing is adjusted with this, meets the needs of practice of construction.
The casing, wherein first clip assembly and second clip assembly include shell, slide bar, sliding block
With the first spring, the shell is fixedly connected with the upper cylinder and the middle cylinder respectively, and the enclosure interior is equipped with cavity, described
Shell corresponds to first clamping block and the second clamping block is equipped with opening, and the slide bar is arranged on the inner wall of the cavity,
The end of the slide bar is arranged in the sliding block, and the sliding block is equipped with sliding slot towards the slide bar, and the sliding block passes through the cunning
Slot and the sliding bar cooperate, and first spring wraps the slide bar setting, the both ends of first spring respectively with institute
It states cavity inner wall to be fixedly connected with the sliding block, first clip assembly and second clip assembly pass through the sliding block
It is engaged by clamping respectively with first bayonet and second bayonet.When needing to connect the upper cylinder with the middle cylinder, institute
State the first clamping block pass through it is described opening with the shoe contact, first clamping block during the decline, described in promotion
Sliding block is moved towards the slide bar, and first spring is extruded generation deformation, continues to decline with the first clamping block, described
Opposite sliding occurs for the side of sliding block and first clamping block, until first bayonet drop to it is identical with the sliding block
Highly, therewith the sliding block under the elastic force of first spring with first bayonet be clamped, thus realize the upper cylinder with
Clamping between the middle cylinder.Between clamping process and the upper cylinder and the middle cylinder between the middle cylinder and the lower cylinder
Clamping process is consistent.
The casing, wherein the lower end of first clamping block and second clamping block is equipped with the first inclined-plane, and described the
One inclined-plane is arranged towards the sliding block, and the inclined-plane facilitates first clamping block and second clamping block pushes the cunning
Block is moved towards the slide bar.
The casing, wherein the surface of the upper cylinder and the middle cylinder is all provided with fluted, and the groove is separately positioned on institute
The top of the first clamping block and second clamping block is stated, fixed link is equipped in the groove vertically, is set in the fixed link
There is link block, the link block is slidably connected with the fixed link, and the one end of the link block far from the groove is equipped with vertically
Push rod, the lower end of the push rod are equipped with the second inclined-plane, and it is equal that first clamping block and second clamping block correspond to the push rod
Equipped with through-hole, the push rod is slidably matched with the through-hole, and the opening of first bayonet and second bayonet is equipped with
Cambered surface, the cambered surface are arranged close to first inclined-plane.When needing to separate the upper cylinder and the middle cylinder disassembly, by pressing
The link block is pressed, slides into the push rod in the through-hole, the sliding block is under the extruding of the push rod, end movement
To the opening of first bayonet, be then lifted out the upper cylinder, the end of the sliding block under the extruding force effect of cambered surface, after
Continue and is moved toward the direction away from first bayonet, until the sliding block fully slides out in first bayonet, described at this time the
There is no clamping effects to first clamping block for one clip assembly, continue to lift up the upper cylinder so that the upper cylinder with it is described
Middle cylinder is completely separable.The disassembly between disassembly process and the upper cylinder and the middle cylinder between the middle cylinder and the lower cylinder
Journey is consistent.
The casing, wherein the fixed link is equipped with second spring, and the second spring is located under the link block
Portion and the wrapping fixed link, the both ends of the second spring are connect with the link block and the groove inner wall respectively.It is described
Second spring has support force to the link block, so that the push rod is not under the upper cylinder and the lower cylinder clamped condition
It will push the sliding block sliding.In addition, the second spring is extruded when the push rod is pushed into first clamping block
Deformation is generated, so that unclamping the pressure to the link block, the push rod after having dismantled between the upper cylinder and the middle cylinder
It is skidded off under the elastic force of the second spring in the through-hole.
The casing, wherein the upper end of the link block is equipped with handle, and the handle is convenient for pushing away the link block
It draws.
The casing, wherein the handle is rotatablely connected by shaft and the link block, and the handle can turn around the shaft
It moves to close to casing position, reduces the handle and taken up space, convenient for transporting.
The casing, wherein the upper cylinder and the middle cylinder correspond to the handle and are equipped with card slot, the handle with it is described
Card slot is engaged by clamping.The card slot slides into the position in first bayonet for cooperating the handle to fix the push rod,
Convenient for the disassembly between the upper cylinder and the middle cylinder.
The casing, wherein the inner surface of the lower cylinder lower end is circular conical surface, and the circular conical surface is convenient for the lower cylinder insertion
Into the rock in riverbed.
The casing, wherein the junction of the upper cylinder and the middle cylinder, the middle cylinder and the lower cylinder is equipped with sealing
Circle, the sealing ring is for preventing water from seeping from the connection gap of the upper cylinder and the middle cylinder and the middle cylinder and the lower cylinder
It penetrates into.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
Fig. 1 is the perspective view for the casing that the utility model first embodiment proposes；
Fig. 2 is the cross-sectional view for the casing that the utility model first embodiment proposes；
Fig. 3 is the portion the V enlarged drawing in the casing that the utility model first embodiment proposes；
Fig. 4 is the portion the M enlarged drawing in the casing that the utility model first embodiment proposes.
| Upper cylinder | 10 | First clamping block | 11 | First bayonet | 111 |
| Through-hole | 112 | Groove | 12 | Fixed link | 13 |
| Link block | 14 | Push rod | 15 | Second spring | 16 |
| Handle | 17 | Shaft | 18 | Card slot | 19 |
| Middle cylinder | 20 | Lower cylinder | 30 | Clip assembly | 40 |
| Shell | 41 | Opening | 42 | Slide bar | 43 |
| Sliding block | 44 | Sliding slot | 45 | First spring | 46 |
| Sealing ring | 50 |
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms in fact
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing this embodiment is the public affairs made to the utility model
It is more thorough and comprehensive to open content.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more related listed items.
Since its height of water level of different rivers differs larger, in different rivers, often to the height of casing
It is required that also inconsistent, existing casing is integrated chemical conversion type, and height can not change, and does not adapt to different rivers, therefore
In different river constructions, generally requires to remake casing, cause the waste of casing.
In order to solve this technical problem, the first embodiment of the utility model provides a kind of casing, please refers to Fig. 1 and figure
2, for the casing that the utility model embodiment proposes, including upper cylinder 10, middle cylinder 20 and lower cylinder 30.Due to upper cylinder 10 and middle cylinder
Connection type between 20 and middle cylinder 20 and lower cylinder 30 is consistent, only to the connection between upper cylinder 10 and middle cylinder 20 in the present embodiment
It is described in detail, therefore in Figure of description, connecting-piece structure makes label between non-centering cylinder 20 and lower cylinder 30.
Upper cylinder 10, middle cylinder 20 and lower cylinder 30 are sequentially connected from top to bottom, and the lower end of upper cylinder 10 is equipped with the first clamping block 11, the
One clamping block 11 is equipped with the first bayonet 111 far from upper cylinder 10, and corresponding first clamping block 11 in the upper end of middle cylinder 20 is equipped with the first clamping
Component 40, the first clip assembly 40 and the first bayonet 111 are engaged by clamping.The lower end of middle cylinder 20 is equipped with the second clamping block, the second card
It connects block and is equipped with the second bayonet far from middle cylinder, corresponding second clamping block in the upper end of lower cylinder 30 is equipped with the second clip assembly, the second clamping
Component and the second bayonet are engaged by clamping.
The first clamping block 11 that upper cylinder 10 is equipped with is clamped with the first clip assembly 40 that middle cylinder 20 is equipped with, on middle cylinder 20
The second clip assembly that the second clamping block for being equipped with and lower cylinder are equipped with is clamped, by the clamping of this stacking by upper cylinder 10, in
Cylinder 20 and lower cylinder 30 connect, since the top and bottom of middle cylinder 20 are respectively equipped with clip assembly and clamping block, middle cylinder
It can also be connected with each other between 20, in different rivers, according to the difference of its height, be connected between upper cylinder 10 and lower cylinder 30
The middle cylinder 20 of different number, the height of casing is adjusted with this, meets the needs of practice of construction.
As shown in figure 3, the first clip assembly 40 and the second clip assembly include shell 41, slide bar 43, sliding block 44 and
One spring 46, shell 41 are fixedly connected with upper cylinder 10 and middle cylinder 20 respectively, and cavity, shell 41 corresponding first are equipped with inside shell 41
Clamping block 11 and the second clamping block are equipped with opening 42, and slide bar 43 is arranged on the inner wall of cavity, and sliding block 44 is arranged in slide bar 43
End, sliding block 44 is equipped with sliding slot 45 towards slide bar 43, and sliding block 44 is slidably matched by sliding slot 45 with slide bar 43, the first spring 46
It wraps slide bar 43 to be arranged, the both ends of the first spring 46 are fixedly connected with cavity inner wall and sliding block 44 respectively, the first clip assembly
40 and second clip assembly pass through sliding block 44 and be engaged by clamping respectively with the first bayonet 111 and the second bayonet.First clamping block 11
It is equipped with the first inclined-plane with the lower end of the second clamping block, the first inclined-plane is arranged towards sliding block, and inclined-plane facilitates 11 He of the first clamping block
Second clamping block pushes sliding block 44 to move towards slide bar 43.
When needing to connect in upper cylinder 10 and middle cylinder 20, the first clamping block 11 passes through opening 42 and contacts with sliding block 44, and first
Clamping block 11 during the decline, pushes sliding block 44 to move towards slide bar 43, and the first spring 46 is extruded generation deformation, with
First clamping block 11 continues to decline, and opposite sliding occurs for the side of sliding block 44 and the first clamping block 11, until the first bayonet
111 drop to height identical with sliding block 44, and sliding block 44 is clamped under the elastic force of the first spring 46 with the first bayonet 111 therewith,
To realize the clamping between upper cylinder 10 and middle cylinder 20.Clamping process and upper cylinder 10 and middle cylinder between middle cylinder 20 and lower cylinder 30
Clamping process between 20 is consistent.
The surface of upper cylinder 10 and middle cylinder 20 is all provided with fluted 12, and groove 12 is separately positioned on the first clamping block 11 and second
The top of clamping block, is equipped with fixed link 13 in groove 12 vertically, the setting of 13 through-going recess 12 of fixed link, and fixed link 13 is separate
One end of groove 12 is equipped with link block 14, and the lower end of link block 14 is equipped with push rod 15 vertically, and push rod 15 and the sliding of fixed link 13 connect
It connecing, the lower end of push rod 15 is equipped with the second inclined-plane, and the first clamping block 11 and the second clamping block correspond to push rod 15 and be equipped with through-hole 112,
Push rod 15 is slidably matched with through-hole 112, and the opening of the first bayonet 111 and the second bayonet is equipped with cambered surface, and cambered surface is close to first
Inclined-plane.
When needing to separate upper cylinder 10 and the disassembly of middle cylinder 20, by pressing link block 14, push rod 15 is made to slide into through-hole
In 112, for sliding block 44 under the extruding of push rod 15, end movement to the opening of the first bayonet 111 is then lifted out cylinder 10,
The end of sliding block 44 continues to move toward the direction away from the first bayonet 111 under the extruding force effect of cambered surface, until sliding block 44 is complete
It skids off in the first bayonet 111 entirely, the first clip assembly 40 is continued to lift up to the first clamping block 11 there is no clamping effect at this time
Cylinder 10, so that upper cylinder 10 and middle cylinder 20 are completely separable.Disassembly process and upper cylinder 10 and middle cylinder 20 between middle cylinder 20 and lower cylinder 30
Between disassembly process it is consistent.
Fixed link is equipped with second spring 16, and second spring 16 is located at the lower part of link block 14 and wrapping fixed link 13, the
The both ends of two springs 16 are connect with push rod 15 and 12 inner wall of groove respectively, and second spring 16 has support force to link block 14, are made
It obtains under upper cylinder 10 and lower 20 clamped condition of cylinder, push rod 15 not will push the sliding of sliding block 44.In addition, being pushed into first in push rod 15
When in clamping block 11, second spring 16 is extruded generation deformation, so that after having been dismantled between upper cylinder 10 and middle cylinder 20, release pair
The pressure of link block 14, push rod 15 are skidded off under the elastic force of second spring 16 in through-hole 112.
As shown in figure 4, the upper end of link block 14 is equipped with handle 17, handle 17 is convenient for the push-and-pull to link block 14, handle 17
It is rotatablely connected by shaft 18 and push rod 15, handle 17 18 can be turned to close to casing position around the shaft, be reduced shared by handle 17
Space, convenient for transporting.Upper cylinder 10 and the corresponding handle 17 of middle cylinder 20 are equipped with card slot 19, and handle 17 and card slot 19 are engaged by clamping, card
Slot 19 is for cooperating the fixed push rod 15 of handle 17 to slide into the position in the first bayonet 111, convenient between upper cylinder 10 and middle cylinder 20
Disassembly.
As shown in Fig. 2, the inner surface of lower 30 lower end of cylinder is circular conical surface, circular conical surface is inserted into the rock in riverbed convenient for lower cylinder 30
In.
The junction of upper cylinder 10 and middle cylinder 20, middle cylinder 20 and lower cylinder 30 is equipped with sealing ring 50, and sealing ring 50 is for preventing
Water permeates from the connection gap of upper cylinder 10 and middle cylinder 20 and middle cylinder 20 and lower cylinder 30.
Above embodiments only express a kind of embodiment of the utility model, and the description thereof is more specific and detailed, but not
Therefore it can be interpreted as that a limitation on the scope of the patent of the present invention.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this reality
With novel protection scope.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of casing, including sequentially connected upper cylinder, middle cylinder and lower cylinder from top to bottom, it is characterised in that: under the upper cylinder
End is equipped with the first clamping block, and first clamping block is equipped with the first bayonet far from the upper cylinder, and the upper end of the middle cylinder corresponds to institute
It states the first clamping block to be engaged by clamping equipped with the first clip assembly, first clip assembly and first bayonet, the middle cylinder
Lower end be equipped with the second clamping block, second clamping block far from the middle cylinder be equipped with the second bayonet, the upper end pair of the lower cylinder
Second clamping block is answered to be equipped with the second clip assembly, second clip assembly and second bayonet are engaged by clamping.
2. casing according to claim 1, it is characterised in that: first clip assembly and second clip assembly are equal
Including shell, slide bar, sliding block and the first spring, the shell is fixedly connected with the upper cylinder and the middle cylinder respectively, the shell
Internal portion is equipped with cavity, and the shell corresponds to first clamping block and the second clamping block is equipped with opening, the slide bar setting
On the inner wall of the cavity, the end of the slide bar is arranged in the sliding block, and the sliding block is equipped with sliding slot towards the slide bar,
The sliding block is cooperated by the sliding slot and the sliding bar, and first spring wraps the slide bar and is arranged, and described first
The both ends of spring are fixedly connected with the cavity inner wall and the sliding block respectively, first clip assembly and second clamping
Component passes through the sliding block and is engaged by clamping respectively with first bayonet and second bayonet.
3. casing according to claim 2, it is characterised in that: the lower end of first clamping block and second clamping block
Equipped with the first inclined-plane, first inclined-plane is arranged towards the sliding block.
4. casing according to claim 3, it is characterised in that: the surface of the upper cylinder and the middle cylinder be all provided with it is fluted,
The groove is separately positioned on the top of first clamping block and second clamping block, is equipped with vertically in the groove solid
Fixed pole, the fixed link are equipped with link block, and the link block is slidably connected with the fixed link, and the link block is far from described
One end of groove is equipped with push rod vertically, and the lower end of the push rod is equipped with the second inclined-plane, first clamping block and second card
It connects block and corresponds to the push rod and be equipped with through-hole, the push rod is slidably matched with the through-hole, first bayonet and described second
The opening of bayonet is equipped with cambered surface, and the cambered surface is arranged close to first inclined-plane.
5. casing according to claim 4, it is characterised in that: the fixed link is equipped with second spring, second bullet
Spring is located at the lower part of the link block and the wrapping fixed link, the both ends of the second spring respectively with the link block and institute
State groove inner wall connection.
6. casing according to claim 5, it is characterised in that: the upper end of the link block is equipped with handle.
7. casing according to claim 6, it is characterised in that: the handle is connected by shaft and link block rotation
It connects.
8. casing according to claim 7, it is characterised in that: the upper cylinder and the middle cylinder correspond to the handle and be equipped with
Card slot, the handle and the card slot are engaged by clamping.
9. casing according to claim 1, it is characterised in that: the inner surface of the lower cylinder lower end is circular conical surface.
10. casing according to claim 1, it is characterised in that: the upper cylinder and the middle cylinder and the middle cylinder and described
The junction of lower cylinder is equipped with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821382549.1U CN209508967U (en) | 2018-08-24 | 2018-08-24 | Casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821382549.1U CN209508967U (en) | 2018-08-24 | 2018-08-24 | Casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209508967U true CN209508967U (en) | 2019-10-18 |
Family
ID=68187278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821382549.1U Expired - Fee Related CN209508967U (en) | 2018-08-24 | 2018-08-24 | Casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209508967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883289A (en) * | 2021-09-13 | 2022-01-04 | 盐城欧润石化设备制造有限公司 | Petroleum machinery valve with limiting function |
-
2018
- 2018-08-24 CN CN201821382549.1U patent/CN209508967U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883289A (en) * | 2021-09-13 | 2022-01-04 | 盐城欧润石化设备制造有限公司 | Petroleum machinery valve with limiting function |
| CN113883289B (en) * | 2021-09-13 | 2022-07-15 | 盐城欧润石化设备制造有限公司 | Petroleum machinery valve with limiting function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209508967U (en) | Casing | |
| CN217921966U (en) | Fermentation vat marsh gas collecting device is used in people's animal manure handles | |
| CN209164815U (en) | A kind of yoke configurations quickly opened and closed | |
| CN201568595U (en) | Inner wedge support type parallel double-flashboard gate valve | |
| CN207791169U (en) | A kind of explosion-proof medicine-chest component of plant protection drone | |
| CN110455631A (en) | Water pressure test gas cylinder collet | |
| CN208232303U (en) | A kind of cyclic annular retaining mechanism of mould slide block | |
| CN214171448U (en) | Novel soft seal gate valve | |
| CN207140256U (en) | A kind of refrigerator drawer die cylinder core pulling locking mechanism | |
| CN202674413U (en) | Water inflow solenoid valve with anti-siphon device | |
| CN209599767U (en) | A kind of mold of built-in imitative hydraulic cylinder structure | |
| CN210196179U (en) | Hydraulic cylinder with self-protection function | |
| WO2021128681A1 (en) | Magnetic building block | |
| CN209077758U (en) | A kind of guide post drawing structure of two plates die casting machine | |
| CN209296229U (en) | A kind of airtight testing mould | |
| CN106286245A (en) | One opens valve ball drainage oil-well pump of oil well | |
| CN201043609Y (en) | Forced decompression valve | |
| CN205919933U (en) | Valve automatic test equipment | |
| CN106392034B (en) | A kind of bathroom deodorization threeway die casting | |
| JP2003501293A (en) | Hydraulic press with improved control of hydraulic circuits. | |
| CN205255233U (en) | Rubber mandrel | |
| CN209725516U (en) | A kind of waterproof construction in fitting-out work | |
| CN215038742U (en) | Circular hydraulic auxiliary stripping inspection well die | |
| CN204676419U (en) | Bridge drain system | |
| CN215806311U (en) | Novel valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191018 Termination date: 20210824 |