CN208379582U - Flap valve in a kind of cast-in-place Big Pipe Pile perforating device - Google Patents
Flap valve in a kind of cast-in-place Big Pipe Pile perforating device Download PDFInfo
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- CN208379582U CN208379582U CN201820574692.4U CN201820574692U CN208379582U CN 208379582 U CN208379582 U CN 208379582U CN 201820574692 U CN201820574692 U CN 201820574692U CN 208379582 U CN208379582 U CN 208379582U
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- flap valve
- valve unit
- outer tube
- cast
- jacking block
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Abstract
The utility model discloses flap valves in a kind of cast-in-place Big Pipe Pile perforating device, the stake mould of cast-in-place Big Pipe Pile can be combined into bilayer sleeve, bilayer sleeve includes inner tube and the outer tube with inner tube coaxial line, interior flap valve includes several flap valve units, flap valve unit is same rotary table cutting forming, flap valve unit is rotatably coupled to the downside of inner tube, the wedge of two adjacent flap valve units of support is equipped in bilayer sleeve, flap valve unit can be overlapped with outer tube medial surface, support component is equipped between flap valve unit and outer tube, support component includes jacking block, body of magnetic material is equipped in inside support component or wedge.The benefit of the utility model is to reduce the stress of mandrel；A mould inclination is prevented, the structural strength for improving cast-in-place Big Pipe Pile is conducive to；Improve the service life of stake mould；Flap valve unit can play stable guiding role, and jacking block can pull jacking block and the fitting of flap valve unit, enhance the structural strength of large-diameter tubular pile.
Description
Technical field
The utility model relates to flap valves in cast-in-place Big Pipe Pile technical field more particularly to a kind of cast-in-place Big Pipe Pile perforating device.
Background technique
Cast-in-place concrete large-diameter tubular pile, that is, PCC is being closed steel internal and external double-layer cavity structure using mode of vibration
Under the flap valve shoe protection of conjunction, Foundation Design depth is sunk to, is uniformly injected by concrete current divider into the structural cavities mixed
Solidifying soil, then the cavity structure is transferred in vibration, and flap valve shoe separates automatically when the cavity structure is transferred to, and concrete injects cavity
In the annular groove that structure is formed after transfering to, cast-in-place concrete large-diameter tubular pile is formed.PCC technologies are that building trade is a kind of efficiently
Economic high-quality pile-type technology.Under the conditions of same concrete amount, that is, same cross-sectional area, PCC can be improved pile bearing capacity
50% or more.The flap valve shoe of the prior art is typically secured to outer tube lower end and is bonded with inner tube, and the guiding role of stake mould is main
It is determined by flap valve shoe, cast-in-place large-diameter tubular pile perforating device is be easy to cause when traditional flap valve shoe is by earthwork pressure extrusion
Seal failure, deformation or inclination reduce the cast-in-place quality of large-diameter tubular pile.
For example, Authorization Notice No. is CN205617361U in Chinese patent literature, authorized announcement date is on October 5th, 2016
The utility model patent of disclosed entitled " a kind of cast-in-place concrete large-diameter tubular pile ", this application discloses a kind of cast-in-place coagulations
Native large-diameter tubular pile, including pile body and shoe, the pile body are hollow steel pipe, and interlayer, pile body wall top are equipped among pile body wall
It to be sent into mouth equipped with concrete, is equipped with steel bar layer inside pile body, the shoe is circular ring shape, and the shoe includes interconnecting piece, angle steel,
The interconnecting piece is arranged on angle steel above plane, and the interconnecting piece is cylinder, and shoe is arranged by interconnecting piece presss from both sides in pile body
Layer lower section, is uniformly arranged several steel plates between the horizontal plane and vertical plane of the angle steel, the steel plate is triangle, under pile body wall
Side is arranged on angle steel in plane, and filler is equipped with below the interlayer and bonds shoe, the utility model structure is simple, user
Just, angle steel is set, impact force can be reduced, protects pile crown, triangular steel plate is set between angle steel, reduce and rub during hammering
Resistance is wiped, penetration power is strong, and penetrating power is good, shortens the construction time, and it is at low cost, it is long using the time.Disadvantage is that major diameter
Tubular pole is squeezed into soil by angle steel, and shoe is integrally connected with tubular pole, and pile body is after concreting as a part of tubular pole
It cannot take out, every root canal pile requires a pile body, and the cost of cast-in-place Big Pipe Pile is excessively high.
For another example Authorization Notice No. is CN102296598B in Chinese patent literature, publication date is on December 28th, 2011
The patent of invention of disclosed entitled " cast-in-situ steel reinforced concrete large diameter pipe pile construction method ", this application discloses a kind of cast-in-place
Armored concrete large diameter pipe pile construction method, comprising the following steps: stake machine is in place；Activity inner support is turned to close to limit
Device；Flapper pile tip closure；Sink to a mould；Remove vibration head；Transfer steel reinforcement cage；Load onto vibration head；Concrete perfusion；Vibration is pulled out
Pipe；Flapper pile tip and inner support are opened；Concrete and steel reinforcement cage enter ground；Stake mould extracts pile.Activity inner support and limit
Device can be uniformly arranged 3 or 3 or more along stake mould.Cross-brace reinforcing bar is set on steel reinforcement cage, semicircle elbow is arranged in both ends,
And 3 or 3 or more are arranged in each transversal cross-section of steel reinforcement cage, every 3 ~ 5m is arranged one group along longitudinal direction.The present invention is dexterously set
Activity inner support and the steel reinforcement cage with cross-brace reinforcing bar are set, solves the problems, such as armored concrete PCC pile driving construction, is expanded
PCC application ranges, low cost obtain higher bearing capacity with less concrete amount.Disadvantage is that living
Valve pile top completes piling, and the activity inner support of activity inner support support inner and outer tubes is connected with inner tube by shaft, is being sunk to
When stake mould, pressure is born by shaft, and flapper pile tip is easy to be twisted to cause a mould inclination, or even be easy to cause the damage of a mould
It is bad, so that annular chamber is squeezed into mud and the structural strength of large-diameter tubular pile is caused to reduce, influences the use of large-diameter tubular pile；The ring of stake mould
Shape chamber is easy into mud, and the leakproofness of tubular pole is inadequate.
Therefore, it is cast-in-place to improve to design flap valve in the cast-in-place Big Pipe Pile perforating device that a kind of structural strength is high and sealing intensity is good
The structural strength of the service life of Big Pipe Pile perforating device and cast-in-place Big Pipe Pile is just necessary.
Utility model content
The utility model will overcome existing cast-in-place Big Pipe Pile flap valve structural strength and the insufficient defect of flap valve leakproofness, mention
Flap valve in a kind of cast-in-place Big Pipe Pile perforating device is supplied, it is intended to improve the structural strength and combination sealing of flap valve in cast-in-place Big Pipe Pile
Property, to improve the structural strength and coagulation efficacy of cast-in-place concrete large-diameter tubular pile.
To achieve the goals above, the utility model adopts the following technical solution.
Flap valve in a kind of cast-in-place Big Pipe Pile perforating device, can be combined into the stake mould of cast-in-place Big Pipe Pile, double braid covering with bilayer sleeve
Pipe includes inner tube and the outer tube with inner tube coaxial line, and interior flap valve includes several flap valve units, and flap valve unit is the cutting of same rotary table
Forming, flap valve unit are rotatably coupled to the downside of inner tube, the wedge of two adjacent flap valve units of support is equipped in bilayer sleeve,
Flap valve unit and wedge cooperatively form pore-forming rotary table, and pore-forming rotary table is located at the inside of outer tube.
Preferably, flap valve unit can be overlapped with outer tube medial surface, support component, branch are equipped between flap valve unit and outer tube
Support component includes jacking block, and jacking block can be bonded outer tube and flap valve unit simultaneously；Magnetic material is equipped in inside support component or wedge
Body.
Several pieces of flap valve units are whole round table surface cutting forming, the leakproofness of flap valve unit cone side between any two
It can be good.Support component is equipped with outer tube towards the flap valve unit inside of inner tube to connect；Installation is magnetic in support component or wedge
Material bodies realize the function that jacking block had not only been pushed up but also adsorbed for flap valve unit.Outer tube and flap valve list are withstood by support component contact
Member, the power that flap valve upper end junction is subject to just become very little, and the soil body passes to most of active force to flap valve unit by support group
Part is born, and another part passes to inner tube baseplane by flap valve upper surface and bears；When flap valve exists in cast-in-place Big Pipe Pile perforating device lower section
When the soil body is driven underground, because of the connection position-limiting action of support component, greatly reduce flap valve unit and inner tube junction by
Power reduces deformation and dislocation of the flap valve unit when throwing mould into, improves the service life and efficiency of perforating device flap valve.Support group
The compression capability of flap valve unit can be enhanced in part, prevents the deformation when throwing mould into of flap valve unit, flap valve unit is enable to play
Stable guiding role prevents a mould inclination and offset, improves the structural strength and reliability of cast-in-place Big Pipe Pile.It is pushed up in support component
Block portion point is equipped with body of magnetic material, and jacking block carrying magnetic can pull flap valve unit and jacking block fitting, enhancing flap valve unit with it is interior
The connection sealing and stability of pipe prevent flap valve unit from deviating from；The jacking block of support component is in demoulding because vibration hammer is brought
Vibration, and the concrete positioned at support component up and down that vibrates enhances the structural strength of concrete.It is contacted and is pushed up by jacking block
Firmly outer tube and pore-forming rotary table, the power that flap valve is subject to inner tube junction are born by jacking block, when enhancing pore-forming, cast-in-place Big Pipe Pile pore-forming
Bonding strength in below device between flap valve and inner tube reduces the stress of inner tube and flap valve unit junction；Pore-forming rotary table is located at
The inside of outer tube is that a mould is oriented to by pore-forming rotary table and outer tube, prevents a mould inclination, be conducive to improve cast-in-place Big Pipe Pile jointly
Structural strength；The cross-sectional area of outer tube is greater than the cross-sectional area of inner tube, when by same earthwork pressure, what outer tube was subject to
Stress is small, is conducive to the service life for improving stake mould；The compression capability of flap valve unit can be enhanced in jacking block, prevents flap valve unit from existing
Deformation when throwing mould into, enables flap valve unit to play stable guiding role, prevents a mould inclination and offset, improves cast-in-place big pipe
The structural strength and reliability of stake.
Preferably, support component further includes grip block, grip block is fixed on side of the flap valve unit towards outer tube, clamping
Block includes two pieces of parallel clamping walls, and jacking block is located at internal folded by two pieces of clamping walls and is interference fitted with two pieces of clamping walls.It is convenient
The position for completing jacking block and grip block is fixed, it is ensured that the positioning of flap valve unit；Positioning can be cooperated by grip block and jacking block, prevented
Only flap valve unit shakes.The jacking block and grip block of support component cooperate, and not only press from both sides but also push up, and solve traditional Big Pipe Pile perforating device flap valve and beat
Unstable and insufficient intensity problem insecure and in place when entering in place, support component can be bonded simultaneously on the inside of outer tube and flap valve
On the outside of unit.
Preferably, body of magnetic material is located at one end of jacking block or grip block, jacking block and grip block are located in outer tube
On the outside of side and flap valve unit or jacking block is located on the outside of flap valve unit and on the inside of outer tube with grip block, jacking block and grip block card
Connect fixation.By the fixation between magnetic force auxiliary lift block and grip block, jacking block carrying magnetic can also pull jacking block and flap valve unit
Fitting enhances the connection sealing and stability of flap valve unit and outer tube, prevents flap valve unit from deviating from, to prevent large diameter pipe
It is mixed into soil in the concrete of stake, enhances the structural strength of large-diameter tubular pile；Jacking block, which can be squeezed and be stirred in demoulding, to be located at
Concrete on the upside of jacking block enhances the structural strength of concrete.
Preferably, jacking block is fixed on outer tube, jacking block includes longitudinal section for rectangular fixed section and is located at fixed section
Lower section longitudinal section is the supporting section of right angled triangle, and for fixed section between inner and outer tubes, supporting section is located at outer tube and flap valve
Between unit, the side where the bevel edge of supporting section is bonded with the outside of flap valve unit, and the side of jacking block towards flap valve unit is set
There is the support cambered surface being bonded with flap valve unit.It is good to support and fix effect for the stable connection of jacking block and outer tube.
Preferably, flap valve unit upper surface and inner tube baseplane horizontal seal, flap valve unit when flap valve unit is closed
Lower end is equipped with vertical type cylinder face to form cylindrical surface sealing to overlap with outer tube medial surface.Flap valve unit lower end is respectively and in outer tube
Side overlaps to form cylindrical facade sealing, completes the sealing between flap valve unit lower end and outer tube.
Preferably, the upper end of flap valve unit is equipped with connecting sleeve, it is equipped with mandrel in connecting sleeve, the both ends of mandrel are located at
To form two interconnecting pieces, the lower end of inner tube is equipped with the cooperation casing in mating connection portion for the outside of connecting sleeve.Pass through connection
Casing and mandrel complete being rotatably connected for flap valve unit and inner tube, and a mould is facilitated to demould after casting concrete.
The utility model has the beneficial effect that
1, flap valve cellular construction is stablized, and so that pore-forming platform is played stable guiding role, prevents a mould inclination and offset,
Improve the structural strength and reliability of cast-in-place Big Pipe Pile；
2, flap valve unit is located at the inside of outer tube, is jointly that a mould is oriented to by flap valve unit and outer tube, prevents a mould from inclining
Tiltedly, be conducive to improve the structural strength of cast-in-place Big Pipe Pile；
3, jacking block stress, mandrel stress is small, is conducive to the service life for improving mandrel；
4, flap valve unit is that the same rotary table is cut, and neat, good airproof performance, raising large-diameter tubular pile are aligned after combination
Structural strength；
5, the jacking block of support component vibrates positioned at support component up and down in demoulding because vibration hammer bring shakes
Concrete, enhance the structural strength of concrete；
6, the cross-sectional area of outer tube is greater than the cross-sectional area of inner tube, when by same earthwork pressure, what outer tube was subject to
Stress is small, compared with the outer flap valve tubular pole of same size, is conducive to the service life for improving stake mould；
7, support component carrying magnetic can also enhance the connection sealing and stability of flap valve unit and outer tube, complete flux density
Envelope, improves the intensity of cast-in-situ major diameter pipe pile.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of embodiment of the utility model.
Fig. 2 is the installation expanded view of pore-forming rotary table in the utility model.
Fig. 3 is the top view of stake mould used in the utility model.
Fig. 4 is the structural schematic diagram of jacking block in the utility model.
Fig. 5 is the structural schematic diagram of wedge in the utility model.
Fig. 6 is the structural schematic diagram of the utility model another kind embodiment.
In figure: the outer tube 1 pore-forming conical surface, 11 inner tube, 2 connecting sleeve, 3 mandrel, 4 pore-forming rotary table, 5 flap valve units 51 are vertical
511 wedge, 52 jacking block, 6 fixed section 601 supporting section 602 in cylindrical surface supports 603 knuckle of cambered surface, 604 body of magnetic material
61 grip blocks 7 protect annulus muscle 8.
Specific embodiment
The utility model is described further in the following with reference to the drawings and specific embodiments.
In Fig. 1 to Fig. 6, flap valve in a kind of cast-in-place Big Pipe Pile perforating device can be combined into cast-in-place Big Pipe Pile with bilayer sleeve
Stake mould, bilayer sleeve includes inner tube 2 and the outer tube 1 with 2 coaxial line of inner tube, and interior flap valve includes several flap valve units 51, flap valve list
Member 51 is cut and formed for same rotary table, and the upper end of flap valve unit 51 is equipped with connecting sleeve 3, is equipped with mandrel 4, core in connecting sleeve 3
The both ends of axis 4 are located at the outside of connecting sleeve 3 to form two interconnecting pieces, and the lower end of inner tube 2 is equipped with matching for mating connection portion
Trap pipe passes through mandrel 4 and the downside for cooperating the connection of casing that flap valve unit 51 is made to be rotatably coupled to inner tube 2.Outer tube 1
Lower end is equipped with the pore-forming conical surface 21, and the pore-forming conical surface 21 is located at the inside of 1 lower end of outer tube, bilayer sleeve is facilitated to squeeze into ground downwards.Fig. 3
In, the wedge 52 of two adjacent flap valve units 51 of support is equipped in bilayer sleeve, the two sides of flap valve unit 51 are along parallel, flap valve list
The gap of wedge is reserved after 51 cutting of member, the gap of wedge is withstood by wedge 52, and flap valve unit 51 is cooperatively formed with wedge 52
Pore-forming rotary table, pore-forming rotary table are located at the inside of outer tube 1, and flap valve unit 51 can be overlapped with 1 medial surface of outer tube, flap valve unit 51 and outer
Support component is equipped between pipe 1, support component includes jacking block 6, and jacking block 6 can be bonded outer tube 1 and pore-forming rotary table 5 simultaneously；Support group
It is equipped with body of magnetic material 61 in part or wedge 52, in Fig. 4, body of magnetic material 61 is equipped in support component.Support component further includes
Grip block 7, grip block 7 are fixed on flap valve unit 51 towards the side of outer tube 1, and grip block 7 includes two pieces of parallel clamping walls, top
Block 6 is located at internal folded by two pieces of clamping walls and is interference fitted with two pieces of clamping walls.After flap valve unit 51 is bonded outer tube 1, jacking block 6
It can be just bonded with grip block 7, axial restraint of the jacking block 6 towards 1 side of outer tube is completed by grip block 7.Body of magnetic material 61
Positioned at one end of jacking block 6 or grip block 7, jacking block 6 and grip block 7 are located at 51 outside of 1 inside of outer tube and flap valve unit, or top
Block 6 and grip block 7 are located at 1 inside of 51 outside of flap valve unit and outer tube, and jacking block 6 is connected and fixed with grip block 7.Fig. 1 and Fig. 4
In, jacking block 6 is fixed on outer tube 1, and jacking block 6 is welded on 1 inside of outer tube, and grip block 7 is welded on the outside of flap valve unit 51, jacking block
6 include longitudinal section be rectangular fixed section 601 and positioned at 601 lower section longitudinal section of fixed section be right angled triangle supporting section
602, fixed section 601 is between outer tube 1 and inner tube 2, and supporting section 602 is between outer tube 1 and flap valve unit 51, supporting section
Side where 602 bevel edge is bonded with the outside of flap valve unit 51, and the side of jacking block 6 towards flap valve unit 51 is equipped with and flap valve
The support cambered surface 603 that unit 51 is bonded.It can be seen that according to Fig. 1 and Fig. 4, jacking block 6 is equipped with one section of annular groove towards the side of inner tube 2
And cylindrical hole, it is respectively used to accommodate connecting sleeve 3 and body of magnetic material 61, prevents the movement interference of flap valve unit 51.In Fig. 5,
The structure of wedge 52 is similar to jacking block 6, and the difference of wedge 52 and jacking block is wedge from the side of close outer tube 1 towards inner tube 2
Side size be gradually reduced, facilitate the rotation of flap valve unit 51.Body of magnetic material 61 is fixed on jacking block 6 towards flap valve in Fig. 4
The side of unit 51.51 upper surface of flap valve unit and 2 baseplane of inner tube horizontal seal, flap valve unit when flap valve unit 51 is closed
51 lower ends are equipped with vertical type cylinder face 511 to form cylindrical surface sealing to overlap with 1 medial surface of outer tube.The side of the fitting inner tube 2 of jacking block 6
The upper end in face is equipped with knuckle 604.The lower end that flap valve unit 51 is corresponded on the inside of outer tube 1 is equipped with protection annulus muscle 8.
It is that the pore-forming conical surface 21 of Fig. 3 middle external tube 1 is located at 1 lower end of outer tube in place of the difference of embodiment shown in fig. 6 and Fig. 1
Outside.
A kind of application method based on flap valve in above-mentioned cast-in-place Big Pipe Pile perforating device, comprising the following steps: stake machine is in place, living
Valve unit 51 and bilayer sleeve pass through the assembling pile mould of mandrel 4；It is adsorbed using the body of magnetic material 61 in support component or wedge
Outer tube 1 and flap valve unit 51, flap valve unit 51 are closed；A mould is sunk to, stake mould is sunk to by subterranean designation depth by stake machine；Double
Concrete perfusion in the cavity of layer casing；Bilayer sleeve is promoted, flap valve unit 51 automatically opens under the pressure of concrete, coagulation
Soil solidification forms tubular pole.
Several pieces of flap valve units 51 are whole round table surface cutting forming, the peace of the cone side between any two of flap valve unit 51
Dress and good seal performance；Outer tube 1 and flap valve unit 51 are withstood by support component contact, the power that flap valve upper end mandrel 4 is subject to is just
Become very little, the soil body, which is passed to, to be born to most of active force of flap valve unit 51 by support component, and another part is by flap valve upper end
2 baseplane of inner tube receiving is passed in face；When flap valve is when being driven underground the soil body in cast-in-place Big Pipe Pile perforating device lower section, because of support
The connection position-limiting action of component, greatly reduces the stress of mandrel 4, reduces deformation of the flap valve unit 51 when throwing mould into and wrong
The service life and efficiency of perforating device flap valve are improved in position.The compression capability of flap valve unit 51 can be enhanced in support component, prevents from living
The deformation when throwing mould into of valve unit 51, enables flap valve unit 51 to play stable guiding role, prevents a mould inclination and offset,
Improve the structural strength and reliability of cast-in-place Big Pipe Pile.Jacking block 6 is equipped with body of magnetic material 61 in support component, and jacking block 6 is with magnetic
Property can pull flap valve unit 51 and jacking block 6 and be bonded, may also set up body of magnetic material 61 in wedge 52, the application selects jacking block 6
Interior setting enhances the connection sealing and stability of flap valve unit 51 and outer tube 1, fixed using the comprehensive function of clamp assemblies
Flap valve unit 51 is adsorbed, whole flap valve units 51 are closed, prevents flap valve unit 51 from deviating from；The jacking block 6 of support component is demoulding
The vibration of Shi Yinwei vibration hammer bring, the concrete to vibrate positioned at support component up and down enhance the structural strength of concrete.
Claims (7)
1. flap valve in a kind of cast-in-place Big Pipe Pile perforating device, can be combined into the stake mould of cast-in-place Big Pipe Pile, bilayer sleeve with bilayer sleeve
Outer tube including inner tube and with inner tube coaxial line, characterized in that the interior flap valve includes several flap valve units, and flap valve unit is same
One rotary table cutting forming, flap valve unit are rotatably coupled to the downside of inner tube, two adjacent flap valves of support are equipped in bilayer sleeve
The wedge of unit, flap valve unit and wedge cooperatively form pore-forming rotary table, and pore-forming rotary table is located at the inside of outer tube.
2. flap valve in a kind of cast-in-place Big Pipe Pile perforating device according to claim 1, characterized in that the flap valve unit can be with
Outer tube medial surface overlap joint, is equipped with support component, support component includes jacking block, and jacking block can be bonded simultaneously between flap valve unit and outer tube
Outer tube and flap valve unit；Body of magnetic material is equipped in inside support component or wedge.
3. flap valve in a kind of cast-in-place Big Pipe Pile perforating device according to claim 2, characterized in that the support component is also wrapped
Grip block is included, grip block is fixed on side of the flap valve unit towards outer tube, and grip block includes two pieces of parallel clamping walls, jacking block position
It is interference fitted inside folded by two pieces of clamping walls and with two pieces of clamping walls.
4. flap valve in a kind of cast-in-place Big Pipe Pile perforating device according to claim 3, characterized in that the magnetic material position
In one end of jacking block or grip block, jacking block and grip block are located at outer tube inside and flap valve unit outside or jacking block and clamping
Block is located on the outside of flap valve unit and on the inside of outer tube, and jacking block is connected and fixed with grip block.
5. flap valve in a kind of cast-in-place Big Pipe Pile perforating device according to Claims 2 or 3 or 4, characterized in that the jacking block is solid
It is scheduled on outer tube, jacking block includes that longitudinal section is rectangular fixed section and longitudinal section is right angled triangle below the fixed section
Supporting section, fixed section is between inner and outer tubes, and supporting section is between outer tube and flap valve unit, where the bevel edge of supporting section
Side be bonded with the outside of flap valve unit, jacking block is equipped with the supporting arc that is bonded with flap valve unit towards the side of flap valve unit
Face.
6. flap valve in a kind of cast-in-place Big Pipe Pile perforating device according to claim 1 or 2 or 3, characterized in that the flap valve list
First upper surface and inner tube the baseplane horizontal seal when flap valve unit is closed, flap valve unit lower end be equipped with vertical type cylinder face to
Outer tube medial surface overlaps to form cylindrical surface sealing.
7. flap valve in a kind of cast-in-place Big Pipe Pile perforating device according to claim 1, characterized in that the flap valve unit it is upper
End is equipped with connecting sleeve, and mandrel is equipped in connecting sleeve, and the both ends of mandrel are located at the outside of connecting sleeve to form two companies
Socket part, the lower end of inner tube are equipped with the cooperation casing in mating connection portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820574692.4U CN208379582U (en) | 2018-04-20 | 2018-04-20 | Flap valve in a kind of cast-in-place Big Pipe Pile perforating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820574692.4U CN208379582U (en) | 2018-04-20 | 2018-04-20 | Flap valve in a kind of cast-in-place Big Pipe Pile perforating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208379582U true CN208379582U (en) | 2019-01-15 |
Family
ID=64972680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820574692.4U Expired - Fee Related CN208379582U (en) | 2018-04-20 | 2018-04-20 | Flap valve in a kind of cast-in-place Big Pipe Pile perforating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208379582U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547288A (en) * | 2018-04-20 | 2018-09-18 | 浙江海桐高新工程技术有限公司 | Flap valve and its application method in a kind of cast-in-place Big Pipe Pile perforating device |
-
2018
- 2018-04-20 CN CN201820574692.4U patent/CN208379582U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547288A (en) * | 2018-04-20 | 2018-09-18 | 浙江海桐高新工程技术有限公司 | Flap valve and its application method in a kind of cast-in-place Big Pipe Pile perforating device |
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| 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: 20190115 |