CN111535309A - Prestressed pipe pile connecting piece - Google Patents
Prestressed pipe pile connecting piece Download PDFInfo
- Publication number
- CN111535309A CN111535309A CN202010298716.XA CN202010298716A CN111535309A CN 111535309 A CN111535309 A CN 111535309A CN 202010298716 A CN202010298716 A CN 202010298716A CN 111535309 A CN111535309 A CN 111535309A
- Authority
- CN
- China
- Prior art keywords
- nut
- cavity
- plug
- elastic locking
- sleeve
- 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.)
- Pending
Links
- 238000009434 installation Methods 0.000 claims description 36
- 125000003003 spiro group Chemical group 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
- E02D5/526—Connection means between pile segments
Abstract
The invention provides a prestressed pipe pile connecting piece which comprises a first nut, a plunger rod body, a second nut, a clamping sleeve assembly and an intermediate sleeve, wherein the plunger rod body is arranged in the first nut, a plug part is arranged on the plunger rod body, the intermediate sleeve is arranged in an inner cavity of the second nut, the clamping sleeve assembly is arranged in a cavity defined by the intermediate sleeve and the inner cavity of the second nut, one end, close to the clamping sleeve assembly, of the intermediate sleeve is provided with a first limiting cavity for preventing the clamping sleeve assembly from being separated from the second nut, the clamping sleeve assembly is provided with a plurality of elastic locking clamps which are uniformly arranged in the circumferential direction, the elastic locking clamps define a locking area into which the plug part can be inserted, and the inner wall of each elastic locking clamp is provided with a limiting step groove for preventing the plug part from being reversely pulled out of the locking area defined by the elastic locking clamps. The connecting piece is convenient to assemble, is firm in connection after splicing connection, has good anti-pulling property, and can ensure the connection strength between the tubular piles.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of connecting pieces, in particular to a prestressed pipe pile connecting piece.
[ background of the invention ]
In the use process of the tubular pile, the tubular piles with different lengths are selected according to different use requirements, so that the tubular piles are required to be connected with each other to form a long pile body. At present, steel plates are arranged at two ends of the existing tubular pile, and the tubular pile is connected with the tubular pile in a mutual welding mode. The pile body after connecting is pressed in underground when the stake, owing to contain salt especially chloride in soil, can form the corruption to the steel sheet that exposes in soil, leads to the junction fracture between tubular pile and the tubular pile to make the connection between tubular pile and the tubular pile form the disconnection, in addition, the welding through the steel sheet is connected the mode relatively complicated, connects inconveniently.
[ summary of the invention ]
The invention aims to solve the problems in the prior art, and provides a prestressed pipe pile connecting piece which is convenient to assemble, is firmly connected after being spliced and connected, has good pulling resistance and can ensure the connecting strength between pipe piles.
In order to achieve the purpose, the invention provides a prestressed pipe pile connecting piece, which comprises a first nut, a plunger body, a second nut, a ferrule assembly and an intermediate sleeve, wherein one end of the plunger body is arranged in an inner cavity of the first nut, the other end of the plunger body is provided with a plug part extending out of the first nut, the intermediate sleeve is arranged in an inner cavity of the second nut, the ferrule assembly is arranged in a cavity defined by the intermediate sleeve and the inner cavity of the second nut, one end of the intermediate sleeve, which is close to the ferrule assembly, is provided with a first limiting cavity for preventing the ferrule assembly from falling out of the second nut, the ferrule assembly is provided with a plurality of elastic locking clips which are uniformly arranged in the circumferential direction, the elastic locking clips define a locking area for the plug part to insert, the inner wall of the elastic locking clips is provided with a limiting stepped groove, and the limiting stepped groove is matched with the plug part, for preventing the plug part from being pulled out reversely from the locking area enclosed by the plurality of elastic locking clips.
Preferably, the clamping sleeve assembly comprises a support sleeve, a spring and a locking piece, the spring is installed at one end of the support sleeve, the locking piece is installed at the other end of the support sleeve, and four elastic locking clamps are circumferentially arranged on the locking piece.
Preferably, the inner wall of one end of the support sleeve is provided with a stepped mounting groove, the other end of the support sleeve is provided with an annular groove, one end of the spring is fixedly mounted in the annular groove, and the locking piece is mounted in the stepped mounting groove.
Preferably, the spring is a tower-shaped spring, the small-diameter end of the spring is installed in the supporting sleeve, and the large-diameter end of the spring abuts against the inner cavity of the second nut.
As preferred, the locking piece is including installation cover, elastic locking card, the installation cover is the annular cover, the installation cover links to each other with supporting the cover, circumference is provided with a plurality of elastic locking cards on the installation cover, the top of elastic locking card is equipped with the fixture block, has the clearance between two adjacent fixture blocks, the top of fixture block has leading-in inner cone surface and the anticreep external cone surface, the anticreep external cone surface leans on the cooperation with first spacing chamber counterbalance, the inboard of fixture block is equipped with spacing ladder groove.
Preferably, the middle sleeve comprises a second threaded connection portion and a limiting step body which are sequentially arranged along the axis direction of the middle sleeve, the second threaded connection portion is installed in a second nut, the outer diameter of the limiting step body is larger than that of the first threaded connection portion, the limiting step body is abutted against one end face of the second nut, a first central cavity for inserting the plug portion is formed in the middle sleeve, an inner hexagonal driving groove is formed in one end, close to the limiting step body, of the first central cavity, a first limiting cavity is formed in the other end of the first central cavity, the inner wall of the first limiting cavity is a conical surface, and one end, far away from the limiting step body, of the first limiting cavity is a large-diameter end.
Preferably, the bayonet rod body comprises a first threaded connection portion, a connecting rod and a plug portion, the first threaded connection portion, the connecting rod and the plug portion are sequentially arranged along the axis direction of the bayonet rod body, a hexagonal driving body is arranged at the connection position of the first threaded connection portion and the connecting rod, the plug portion is a spherical head, and a radial inward-contracting portion is arranged at the connection position of the plug portion and the connecting rod.
Preferably, the center department of first nut has first installation cavity, the one end of first installation cavity is equipped with the first internal thread installation department with inserted bar body looks spiro union, the other end of first installation cavity is equipped with head rod socket, pass through the first toper face of radial contraction between first internal thread installation department and the head rod socket.
Preferably, the center department of second nut has the second installation cavity, the one end of second installation cavity is equipped with the second internal thread installation department with middle cover looks spiro union, the other end of second installation cavity is equipped with the second connecting rod and inserts the chamber, second internal thread installation department and second connecting rod insert and pass through the first conical surface of radial contraction between the chamber.
The invention has the beneficial effects that: according to the invention, through the matching of the first nut, the inserted link body, the second nut, the sleeve assembly and the intermediate sleeve, an integrated sleeve assembly structure is adopted, the sleeve assembly is limited through the intermediate sleeve, the assembly is convenient and rapid to assemble, the elastic locking clip structure is arranged on the sleeve assembly, when the inserted link body is inserted into the inner cavity of the second nut, the plurality of elastic locking clips of the locking piece expand outwards firstly until the plug part of the inserted link body completely enters the locking area defined by the elastic locking clips, the plurality of elastic locking clips retract inwards to lock the plug part, the plug part can be prevented from falling out of the sleeve assembly, the purpose of tensile resistance of the connecting piece is improved, and the connecting strength between pipe piles is ensured.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
Fig. 1 is a sectional view showing an installed state of a pre-stressed pipe pile connecting piece according to the present invention;
FIG. 2 is an exploded view of a prestressed pipe pile connecting member according to the present invention;
fig. 3 is a cross-sectional view of a ferrule assembly of a pre-stressed pipe pile connector of the invention;
FIG. 4 is a cross-sectional view of the middle sleeve of the prestressed pipe pile connecting piece of the present invention;
fig. 5 is a sectional view of a first nut of a pre-stressed pipe pile connecting piece according to the invention;
fig. 6 is a sectional view of a second nut of a pre-stressed pipe pile connecting piece according to the invention.
[ detailed description ] embodiments
Referring to fig. 1 and 2, the prestressed pipe pile connecting piece of the present invention comprises a first nut 1, a plunger body 2, a second nut 3, a ferrule assembly 4 and an intermediate sleeve 5, wherein one end of the plunger body 2 is installed in an inner cavity of the first nut 1, the other end of the plunger body 2 is provided with a plug portion 24 extending to the outside of the first nut 1, the intermediate sleeve 5 is installed in an inner cavity of the second nut 3, the ferrule assembly 4 is disposed in a cavity defined by the intermediate sleeve 5 and the inner cavity of the second nut 3, one end of the intermediate sleeve 5 close to the ferrule assembly 4 is provided with a first limiting cavity 502 for preventing the ferrule assembly 4 from coming off from the second nut 3, the ferrule assembly 4 is provided with a plurality of elastic locking clips 432 uniformly arranged in the circumferential direction, the plurality of elastic locking clips 432 define a locking area for the plug portion 24 to be inserted into, the inner wall of the elastic locking clips 432 is provided with a limiting step groove 4333, the limiting stepped groove 4333 is engaged with the plug portion 24 to prevent the plug portion 24 from being pulled out reversely from the locking region defined by the plurality of elastic locking clips 432.
Further, referring to fig. 3, the ferrule assembly 4 includes a support sleeve 41, a spring 42 and a locking member 43, the spring 42 is mounted at one end of the support sleeve 41, the locking member 43 is mounted at the other end of the support sleeve 41, and four elastic locking clips 432 are circumferentially arranged on the locking member 43. Specifically, the inner wall of one end of the support sleeve 41 has a step installation groove 411, the other end of the support sleeve 41 has an annular groove 412, one end of the spring 42 is fixedly installed in the annular groove 412, and the locking member 43 is installed in the step installation groove 411. In this embodiment, the spring 42 is a tower-shaped spring, the small-diameter end of the spring 42 is installed in the support sleeve 41, and the large-diameter end of the spring 42 abuts against the inner cavity of the second nut 3. Locking piece 43 includes installation cover 431, elastic locking card 432, installation cover 431 is the annular cover, installation cover 431 links to each other with support cover 41, circumference is provided with a plurality of elastic locking cards 432 on the installation cover 431, elastic locking card 432's top is equipped with fixture block 433, has the clearance between two adjacent fixture blocks 433, the top of fixture block 433 has leading-in inner cone 4331 and anticreep outer cone 4332, anticreep outer cone 4332 offsets with first spacing chamber 502 and leans on the cooperation, the inboard of fixture block 433 is equipped with spacing ladder groove 4333.
Further, referring to fig. 4, the middle sleeve 5 includes a second threaded connection portion 51 and a limiting step body 52 sequentially arranged along an axial direction thereof, the second threaded connection portion 51 is installed in the second nut 3, an outer diameter of the limiting step body 52 is larger than an outer diameter of the first threaded connection portion 21, the limiting step body 52 abuts against one end surface of the second nut 3, a first central cavity 50 into which the plug portion 24 is inserted is formed inside the middle sleeve 5, an inner hexagonal driving groove 501 is formed in one end, close to the limiting step body 52, of the first central cavity 50, so that the middle sleeve can be conveniently installed in the first nut by being matched with a wrench, a first limiting cavity 502 is formed in the other end of the first central cavity 50, an inner wall of the first limiting cavity 502 is a tapered surface, and one end, far away from the limiting step body 52, of the first limiting cavity 502 is a large-diameter end.
Further, referring to fig. 2, the plunger body 2 includes a first threaded connection portion 21, a connecting rod 22 and a plug portion 24 sequentially arranged along an axial direction thereof, a hexagonal driving body 210 is arranged at a connection portion of the first threaded connection portion 21 and the connecting rod 22, so as to facilitate the installation of the plunger body into a first nut in cooperation with a wrench, the plug portion 24 is a spherical head, and a radially inwardly-retracted portion 230 is arranged at a connection portion of the plug portion 24 and the connecting rod 22.
Further, referring to fig. 5, a first mounting cavity 10 is formed in the center of the first nut 1, a first internal thread mounting portion 13 screwed with the inserting rod body 2 is arranged at one end of the first mounting cavity 10, a first connecting rod inserting cavity 11 is arranged at the other end of the first mounting cavity 10, and the first internal thread mounting portion 13 and the first connecting rod inserting cavity 11 are in transition through a first radially contracted conical surface 12.
Further, referring to fig. 6, a second mounting cavity 30 is formed in the center of the second nut 3, a second internal thread mounting portion 33 screwed with the middle sleeve 5 is arranged at one end of the second mounting cavity 30, a second connecting rod inserting cavity 31 is arranged at the other end of the second mounting cavity 30, and the second internal thread mounting portion 33 and the second connecting rod inserting cavity 31 are in transition through a first radially contracted conical surface 12.
The working process of the invention is as follows:
when the prestressed pipe pile connecting piece is assembled, firstly, the deformed steel bars are respectively assembled and fixed with the first nut 1 and the second nut 3, then the inserted bar body 2 is installed in the first nut 1, the clamping sleeve assembly 4 is placed in the second nut 3, and finally the middle sleeve 5 is installed in the second nut 3, so that the assembly is convenient.
During installation, the first nut 1 with the plunger body 2 is inserted into the inner cavity of the second nut 3 along the direction F shown in fig. 1, in the process, the plurality of elastic locking clips 432 of the locking piece 43 expand outwards first until the plug part 24 of the plunger body 2 completely enters a locking area surrounded by the elastic locking clips 432, the plurality of elastic locking clips 432 retract inwards to lock the plug part 24, and the elastic locking clips 432 can prevent the plug part 24 from being separated from the ferrule assembly 4 when being subjected to drawing external force, so that the pulling resistance of the connecting piece is improved, and the connecting strength between pipe piles is ensured.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (9)
1. The utility model provides a prestressing force tubular pile connecting piece which characterized in that: the plug-in type plug-in rod comprises a first nut (1), a plug-in rod body (2), a second nut (3), a ferrule assembly (4) and an intermediate sleeve (5), wherein one end of the plug-in rod body (2) is installed in an inner cavity of the first nut (1), the other end of the plug-in rod body (2) is provided with a plug part (24) extending out of the first nut (1), the intermediate sleeve (5) is installed in an inner cavity of the second nut (3), the ferrule assembly (4) is arranged in a cavity defined by the intermediate sleeve (5) and an inner cavity of the second nut (3), one end, close to the ferrule assembly (4), of the intermediate sleeve (5) is provided with a first limiting cavity (502) for preventing the ferrule assembly (4) from coming out of the second nut (3), the ferrule assembly (4) is provided with a plurality of elastic locking clamps (432) uniformly arranged in the circumferential direction, and the elastic locking clamps (432) define a locking area for the plug part (24) to be inserted in, the inner wall of the elastic locking clamp (432) is provided with a limiting step groove (4333), the limiting step groove (4333) is matched with the plug part (24) to prevent the plug part (24) from being pulled out reversely from a locking area surrounded by the elastic locking clamps (432).
2. The prestressed pipe pile connecting member as claimed in claim 1, wherein: the clamping sleeve assembly (4) comprises a support sleeve (41), a spring (42) and a locking piece (43), the spring (42) is installed at one end of the support sleeve (41), the locking piece (43) is installed at the other end of the support sleeve (41), and four elastic locking clamps (432) are circumferentially arranged on the locking piece (43).
3. The prestressed pipe pile connecting member as claimed in claim 2, wherein: the inner wall of one end of the support sleeve (41) is provided with a step mounting groove (411), the other end of the support sleeve (41) is provided with an annular groove (412), one end of the spring (42) is fixedly mounted in the annular groove (412), and the locking piece (43) is mounted in the step mounting groove (411).
4. A pre-stressed pipe pile connecting member as claimed in claim 2 or 3, wherein: the spring (42) is a tower-shaped spring, the small-diameter end of the spring (42) is installed in the support sleeve (41), and the large-diameter end of the spring (42) abuts against the inner cavity of the second nut (3).
5. The prestressed pipe pile connecting member as claimed in claim 1, wherein: locking piece (43) are including installation cover (431), elastic locking card (432), installation cover (431) are the annular cover, installation cover (431) link to each other with support cover (41), circumference is provided with a plurality of elastic locking card (432) on installation cover (431), the top of elastic locking card (432) is equipped with fixture block (433), has the clearance between two adjacent fixture block (433), the top of fixture block (433) has leading-in interior conical surface (4331) and anticreep external cone surface (4332), anticreep external cone surface (4332) and first spacing chamber (502) counterbalance are leaned on the cooperation, the inboard of fixture block (433) is equipped with spacing ladder groove (4333).
6. The prestressed pipe pile connecting member as claimed in claim 1, wherein: the middle sleeve (5) comprises a second threaded connection part (51) and a limiting step body (52) which are sequentially arranged along the axial direction of the middle sleeve, the second threaded connection part (51) is arranged in the second nut (3), the outer diameter of the limiting step body (52) is larger than that of the first threaded connection part (21), the limit step body (52) is abutted against one end face of the second nut (3), a first central cavity (50) for inserting the plug part (24) is arranged in the middle sleeve (5), one end of the first central cavity (50) close to the limiting step body (52) is provided with an inner hexagonal driving groove (501), the other end of the first central cavity (50) is provided with a first limit cavity (502), the inner wall of the first limiting cavity (502) is a conical surface, and one end, far away from the limiting step body (52), of the first limiting cavity (502) is a large-diameter end.
7. The prestressed pipe pile connecting member as claimed in claim 1, wherein: the bayonet rod body (2) comprises a first threaded connection portion (21), a connecting rod (22) and a plug portion (24) which are sequentially arranged along the axis direction of the bayonet rod body, a hexagonal driving body (210) is arranged at the connection position of the first threaded connection portion (21) and the connecting rod (22), the plug portion (24) is a spherical head, and a radial inward-contracting portion (230) is arranged at the connection position of the plug portion (24) and the connecting rod (22).
8. The prestressed pipe pile connecting member as claimed in claim 1, wherein: the center department of first nut (1) has first installation cavity (10), the one end of first installation cavity (10) is equipped with first internal thread installation department (13) with inserted bar body (2) looks spiro union, the other end of first installation cavity (10) is equipped with head rod and inserts chamber (11), transition through radial shrink's first toper face (12) between first internal thread installation department (13) and the head rod inserted chamber (11).
9. The prestressed pipe pile connecting member as claimed in claim 1, wherein: the center department of second nut (3) has second installation cavity (30), the one end of second installation cavity (30) be equipped with middle cover (5) second internal thread installation department (33) of looks spiro union, the other end of second installation cavity (30) is equipped with the second connecting rod and inserts chamber (31), second internal thread installation department (33) and second connecting rod insert and pass through between chamber (31) through radial shrink's first conical surface (12) and pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010298716.XA CN111535309A (en) | 2020-04-16 | 2020-04-16 | Prestressed pipe pile connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010298716.XA CN111535309A (en) | 2020-04-16 | 2020-04-16 | Prestressed pipe pile connecting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111535309A true CN111535309A (en) | 2020-08-14 |
Family
ID=71973200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010298716.XA Pending CN111535309A (en) | 2020-04-16 | 2020-04-16 | Prestressed pipe pile connecting piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111535309A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376549A (en) * | 2020-10-26 | 2021-02-19 | 福建省交通规划设计院有限公司 | Prestressed concrete pipe pile anti-seismic connecting device and using method thereof |
| CN113699983A (en) * | 2021-08-07 | 2021-11-26 | 高月民 | Building tubular pile does not have shearing and draws butt joint fastener and connecting piece fast by force |
| CN114030961A (en) * | 2021-12-28 | 2022-02-11 | 广东伟邦科技股份有限公司 | Elevator button convenient to dismantle |
| KR20220163666A (en) * | 2021-06-03 | 2022-12-12 | 케이에이치건설 주식회사 | Pipe connecting structure and phc pile structure using the same |
-
2020
- 2020-04-16 CN CN202010298716.XA patent/CN111535309A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376549A (en) * | 2020-10-26 | 2021-02-19 | 福建省交通规划设计院有限公司 | Prestressed concrete pipe pile anti-seismic connecting device and using method thereof |
| KR20220163666A (en) * | 2021-06-03 | 2022-12-12 | 케이에이치건설 주식회사 | Pipe connecting structure and phc pile structure using the same |
| KR102503767B1 (en) | 2021-06-03 | 2023-02-27 | 케이에이치건설 주식회사 | Pipe connecting structure and phc pile structure using the same |
| CN113699983A (en) * | 2021-08-07 | 2021-11-26 | 高月民 | Building tubular pile does not have shearing and draws butt joint fastener and connecting piece fast by force |
| CN114030961A (en) * | 2021-12-28 | 2022-02-11 | 广东伟邦科技股份有限公司 | Elevator button convenient to dismantle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111535309A (en) | Prestressed pipe pile connecting piece | |
| CN1037791C (en) | Coupling for outer surface engagement of polymeric pipe | |
| CN212688935U (en) | Prestressed pipe pile connecting piece | |
| RU2017135471A (en) | CLAMP FITTING | |
| US5667328A (en) | Attachment member | |
| CN110145522B (en) | Expansion connecting piece | |
| CN110593256A (en) | Anti-pulling prestressed pipe pile connecting piece | |
| CN102640359A (en) | Self gauging insertion coupling coaxial connector | |
| CN210066733U (en) | Prestressed concrete connecting piece | |
| CN110552940A (en) | telescopic positioning device | |
| CN210678444U (en) | Multi-section inner diameter product inner support clamp | |
| CN210770780U (en) | Cutting ferrule formula pipe fitting connects | |
| CA2513392C (en) | Removable plug-in connection for high-pressure lines | |
| CN209975504U (en) | Double-end connecting piece easy to assemble and quick connecting mechanism of precast pile | |
| CN114561937A (en) | Prestressed pipe pile mechanical connecting piece | |
| CN211286298U (en) | Mechanical joint of precast concrete member | |
| CN211395663U (en) | Anti-pulling prestressed pipe pile connecting piece | |
| CN210421649U (en) | Steel bar connector | |
| CN212959695U (en) | Connecting device for automatically locking rope head of steel wire rope | |
| CN220138709U (en) | Cable end connecting device | |
| CN218005418U (en) | Quick-connection type equipotential internal threaded pipe joint | |
| CN216044834U (en) | Tower type connector | |
| CN217302059U (en) | Hose coupler | |
| CN107864636A (en) | For the method and joint element that at least two components are bonded together by flowing shaping rivet sleeve | |
| CN217053336U (en) | Prestressed pipe pile mechanical connecting piece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |