CN112832464B - Brand-new thread-shaped metal corrugated pipe joint and construction method - Google Patents
Brand-new thread-shaped metal corrugated pipe joint and construction method Download PDFInfo
- Publication number
- CN112832464B CN112832464B CN202110027755.0A CN202110027755A CN112832464B CN 112832464 B CN112832464 B CN 112832464B CN 202110027755 A CN202110027755 A CN 202110027755A CN 112832464 B CN112832464 B CN 112832464B
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- corrugated pipe
- piece
- connecting pipe
- pipe body
- joint
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/10—Ducts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
Abstract
The invention discloses a brand-new thread-shaped metal corrugated pipe joint and a construction method, and belongs to the technical field of building construction. The connecting pipe comprises a connecting pipe body which is in threaded matching connection with a corrugated pipe, fixing rings are fixedly arranged in the connecting pipe body, sealing parts are arranged on two sides of each fixing ring, the connecting pipe body and the corrugated pipe to be connected are connected in a threaded matching manner, the connecting length is controlled by the aid of the positioning rings, the corrugated pipe to be connected is reliably and effectively sealed and connected by the sealing parts, and the connecting pipe body and the corrugated pipe are not easy to fall off after being connected.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a brand new thread-shaped metal corrugated pipe joint and a construction method.
Background
Prestress is a common construction technique adopted by large-span and cantilever structures in building construction. After the prestressed pre-buried pipeline is installed, in the concrete pouring construction process, slurry leakage at the joint of the corrugated pipe can cause blockage or even pipe blockage in the prestressed pipeline, and the prestressed construction quality is seriously influenced.
The corrugated pipe connection mode that currently generally adopts is for adopting big No. one bellows, and both ends are sealed with the sticky tape, but this kind of method receives the pulling force when the bellows, easily drops off or sticky tape department appears the gap when dragging etc. to leak thick liquid appears, how accomplish to avoid the appearance of above-mentioned problem, guarantee to connect closely knit very important, consequently, propose this kind of brand-new screw thread shape metal corrugated pipe joint and construction method to above-mentioned problem.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a brand-new thread-shaped metal corrugated pipe joint and a construction method.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a brand-new screw thread shape metal bellows connects, includes the connecting tube body that passes through screw thread accordant connection with the bellows, the inside of connecting tube body is fixed and is provided with solid fixed ring, the both sides on the solid fixed ring all are provided with the sealing member.
According to a further preferable scheme of the invention, two ends of the connecting pipe body are respectively provided with a separation-preventing assembly, each separation-preventing assembly comprises a fixing piece fixedly arranged at the end part of the connecting pipe body and a first separation-preventing piece rotatably connected to the inner side of the fixing piece, a torsional spring is arranged at the rotary connection part of each separation-preventing piece, and a claw block is arranged at the free end of each separation-preventing piece.
According to a further preferable scheme of the invention, the anti-separation assembly further comprises a mounting groove, positioning holes and a second anti-separation sheet, the mounting groove is formed in the end face of the fixing piece, two groups of positioning holes are formed in the groove wall of the mounting groove, an adjusting structure is arranged on the second anti-separation sheet, and the second anti-separation sheet is matched with the two groups of positioning holes through the adjusting structure.
According to a further preferable scheme of the invention, the adjusting structure comprises a positioning pin arranged on the second anti-falling sheet in a sliding manner and a spring arranged on one side of the positioning pin opposite to the positioning hole, and the positioning pin is matched with the positioning hole.
According to a further preferable scheme of the invention, the fixing ring is circumferentially provided with a plurality of positioning assemblies, each positioning assembly comprises a guide channel, an adjusting piece and a clamping unit, each guide channel is arranged on the side wall of the corresponding fixing ring, each adjusting piece is connected to the corresponding fixing ring through threads, one end of each adjusting piece is located inside the corresponding guide channel, the other end of each adjusting piece is connected with the corresponding connecting pipe body through threads, part of each adjusting piece extends to the outer side of the corresponding connecting pipe body, and each clamping unit is arranged inside the corresponding guide channel, and one side of each clamping unit is abutted to the end of the corresponding adjusting piece.
According to a further preferable scheme of the invention, the clamping unit comprises a fixing frame and a resetting piece, one side of the fixing frame, which is back to the adjusting piece, is fixedly connected with the resetting piece, one end of the resetting piece, which is far away from the fixing frame, is fixedly connected to the side wall of the guide channel, and the fixing frame is provided with a clamping structure.
According to a further preferable scheme of the invention, the clamping structure comprises two clamping claws, a guide rail and a return spring, wherein the two clamping claws are symmetrically arranged, one opposite sides of the two clamping claws are arranged in the guide rail in a sliding manner, the return spring is arranged in the guide rail, and two ends of the return spring are respectively fixedly connected with the corresponding clamping claws.
According to a further preferable scheme of the invention, the clamping claw comprises a guide part and a clamping part which are integrally connected, the guide part is arranged in the guide rail in a sliding mode, and an included angle formed between the clamping part and one side wall opposite to the guide part is an obtuse angle.
In a further preferable aspect of the present invention, the clamping portion is located inside the sealing member, and a cross section of the guide channel is a T-shaped structure.
The invention also discloses a construction method of the brand-new thread-shaped metal corrugated pipe joint, which comprises the following steps:
A. firstly, adjusting an adjusting piece to push a fixing frame to move towards one side close to the central axis of a connecting pipe body along a guide channel, wherein a clamping part of a clamping claw moves inwards along the length direction of a guide rail under the action of the guide channel in the process, and the guide part moves inwards along the length direction of the guide rail along with the clamping claw and compresses a return spring;
B. secondly, separating the corrugated pipe from a group of positioning holes close to one side of the central axis of the corrugated pipe by adjusting the positions of the positioning pins, moving the corrugated pipe to be connected to the group of positioning holes far away from one side of the central axis of the corrugated pipe and matching with the positioning holes at the positions, then connecting the corrugated pipe to be connected with the connecting pipe body through threads until the end part of the corrugated pipe abuts against the side wall of the fixing ring and compresses the sealing element, reversely preventing the corrugated pipe from reversely withdrawing from the inside of the connecting pipe body along the length direction of the connecting pipe body during the threaded connection of the corrugated pipe and the connecting pipe body, separating the corrugated pipe from the group of positioning holes far away from the central axis of the corrugated pipe by adjusting the positions of the positioning pins again, moving the corrugated pipe to the group of positioning holes close to one side of the central axis of the corrugated pipe and matching with the positioning holes at the positions;
C. the reverse adjustment regulating part, fixed frame move to keeping away from connecting body axis one side under the effect that resets, and reset spring will act on two guide parts and push out to the outside thereupon, and joint portion also stretches and the butt on the inner wall of bellows to the outside thereupon simultaneously.
Compared with the prior art, the invention has the following beneficial effects:
1. the connecting pipe body and the corrugated pipe to be connected are connected in a thread matching mode, the connecting length is controlled by the positioning ring, the corrugated pipe to be connected is reliably and effectively sealed and connected by the sealing piece, and the connecting pipe body and the corrugated pipe are not easy to fall off after being connected.
2. The two ends of the connecting pipe body are respectively provided with the anti-disengaging assembly, the anti-disengaging piece I and the claw block on the anti-disengaging assembly are utilized, the anti-disengaging piece I acts on the corrugated pipe in the reverse direction through the torsion spring, the anti-disengaging phenomenon in the dragging process is prevented, and the effective stopping effect on the corrugated pipe can be realized through the claw block.
3. The end face of the fixing piece is provided with the mounting groove, the wall of the mounting groove is provided with two groups of positioning holes, the conditions of different working states of the fixing piece are realized after the adjusting structure on the anti-falling piece II is matched with different positioning holes, the corrugated pipe is subjected to double locking after the fixing piece II is connected and matched with the positioning hole close to one side of the central axis of the corrugated pipe to realize anti-falling clamping, and the reliable connection effect of the corrugated pipe and the connecting pipe body can be facilitated when the fixing piece II is connected with the positioning hole far away from the central axis of the corrugated pipe.
4. According to the invention, the plurality of positioning assemblies are circumferentially arranged on the fixing ring, and the positions of the clamping units of the positioning assemblies in the guide channels are adjusted by the adjusting parts through the guide channels, the adjusting parts and the clamping units of the positioning assemblies, so that the clamping or non-contact effect on the inner wall of the corrugated pipe is realized, and the multi-dimensional anti-falling effect can be further ensured. Wherein the joint unit includes fixed frame, the piece that resets, the joint claw, guide rail and reset spring, it causes the position change of fixed frame to adjust the regulating part, drive the joint claw thereupon and remove, when moving to being close to connecting body axis one side, the joint claw is under the effect of direction passageway lateral wall, can move to the inboard along guide rail length direction, when adjusting the regulating part and cause fixed frame to keep away from connecting body axis one side and move, the joint claw causes the joint claw to stretch out to the outside under reset spring effect, when removing to the butt when the inner wall department of bellows, carry out the restriction processing to the inner wall of bellows, play the anti-drop effect again.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is a side view of the overall structure of the present invention;
fig. 5 is a partially enlarged view of C in fig. 4.
In the figure: 1. connecting the pipe body; 2. a fixing ring; 3. a seal member; 4. a first anti-drop sheet; 5. a claw block; 6. a fixing member; 7. mounting grooves; 8. positioning holes; 9. a second anti-drop sheet; 10. positioning pins; 11. a guide channel; 12. an adjustment member; 13. a fixing frame; 14. a reset member; 15. a clamping claw; 151. a guide portion; 152. a clamping part; 16. a guide rail; 17. a return spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
As shown in fig. 1 to 5, a brand new thread-shaped metal corrugated pipe joint includes a connecting pipe body 1 connected with a corrugated pipe in a thread matching manner, a fixing ring 2 is fixedly arranged inside the connecting pipe body 1, and sealing members 3 are arranged on two sides of the fixing ring 2. The positioning ring 2 is used for controlling the connection length and the sealing piece 3 is used for realizing the reliable and effective sealing connection effect of the corrugated pipe to be connected, and the effect that the corrugated pipe is not easy to fall off is realized after the connecting pipe body 1 and the corrugated pipe are connected.
The further preferred scheme of this embodiment, the both ends of connecting tube body 1 all are provided with the anticreep subassembly, the anticreep subassembly includes that fixed mounting connects at the mounting 6 of connecting tube body 1 tip and rotates and connect 4 at the inboard anticreep piece of mounting 6, the rotation junction of anticreep piece is provided with the torsional spring, the free end of anticreep piece 4 is provided with claw piece 5. Utilize anticreep piece 4 and claw piece 5 on the anticreep subassembly, with anticreep piece 4 its bellows of reverse action under the torsional spring effect, prevent to appear the obscission pulling the in-process, utilize claw piece 5 can realize the effective reverse effect that prevents the bellows.
The further preferred scheme of this embodiment, the anticreep subassembly still includes mounting groove 7, locating hole 8 and two anticreep pieces 9, mounting groove 7 is seted up in the terminal surface of mounting 6, two sets of locating holes 8 have been seted up on the cell wall of mounting groove 7, be provided with the regulation structure on the two 9 anticreep pieces, two 9 anticreep pieces are through adjusting structure and two sets of locating hole 8 homogeneous phase adaptations. After the adjusting structure on the second anti-drop sheet 9 is matched with different positioning holes 8, the conditions of different working states of the corrugated pipe are realized, the corrugated pipe is subjected to double locking and anti-drop chucking after the adjusting structure is connected and matched with the positioning hole 8 close to one side of the central axis of the corrugated pipe, and the corrugated pipe and the connecting pipe body 1 can be conveniently reliably connected when the adjusting structure is connected with the positioning hole 8 far away from one side of the central axis of the corrugated pipe.
In a further preferable aspect of this embodiment, the adjusting structure includes a positioning pin 10 slidably disposed on the second anti-falling plate 9 and a spring disposed on a side of the positioning pin 10 opposite to the positioning hole 8, and the positioning pin 10 is adapted to the positioning hole 8. The position of the adjusting structure can move towards the middle of the adjusting structure through the positioning pin 10, and then when the second anti-falling sheet 9 is moved to the positioning pin and the positioning hole 8 on one side far away from the central axis of the corrugated pipe, the effect of reliable connection between the corrugated pipe and the connecting pipe body 1 can be facilitated; after the positioning pin 10 is connected and matched with the positioning hole 8 close to one side of the central axis of the corrugated pipe, the corrugated pipe is subjected to double locking to realize anti-falling clamping.
The further preferred scheme of this embodiment, fixed ring 2 is gone up circumference and is provided with a plurality of locating component, locating component includes guide way 11, regulating part 12 and joint unit, guide way 11 sets up on fixed ring 2's lateral wall, regulating part 12 is connected and the part extends to the outside of connecting tube body 1 through screw thread and connecting tube body 1 through threaded connection on fixed ring 2 and one end is located guide way 11 inside, the other end, the joint unit sets up the tip butt at guide way 11 inside and one side and regulating part 12. The position of the clamping unit in the guide channel 11 is adjusted through the adjusting piece 12, so that clamping or non-contact effects on the inner wall of the corrugated pipe are achieved, and the multi-dimensional anti-falling effect can be guaranteed.
In a further preferred embodiment of this embodiment, the clamping unit includes a fixing frame 13 and a reset piece 14, one side of the fixing frame 13, which faces away from the adjusting piece 12, is fixedly connected with the reset piece 14, one end of the reset piece 14, which is far away from the fixing frame 13, is fixedly connected to the side wall of the guide channel 11, and the fixing frame 13 is provided with a clamping structure. The fixing frame 13 is reset by the reset piece 14 on the fixing frame 13 after the adjusting piece 12 is reset, so that the inner wall of the connecting pipe body 1 is locked, and further, the corrugated pipe is reinforced and locked.
The further preferred scheme of this embodiment, the joint structure includes joint claw 15, guide rail 16 and reset spring 17, joint claw 15 symmetry is provided with two, two the relative one side of joint claw 15 all slides and sets up inside guide rail 16, the inside reset spring 17 that is provided with of guide rail 16, reset spring 17's both ends respectively with the joint claw 15 fixed connection that corresponds. Clamping claw 15 includes the guide part 151 and the joint portion 152 of body coupling, guide part 151 slides and sets up inside guide rail 16, contained angle between joint portion 152 and the relative lateral wall of guide part 151 is the obtuse angle setting. Adjust regulating part 12 and cause the position change of fixed frame 13, drive joint claw 15 along with it and remove, when moving to being close to connecting tube body 1 axis one side, joint claw 15 under the effect of 11 lateral walls of guide way, can move to the inboard along guide rail 16 length direction, when adjusting regulating part 12 and cause fixed frame 13 to move to keeping away from connecting tube body 1 axis one side, joint claw 15 causes joint claw 15 (last guide part 151 and joint part 152) to stretch out to the outside under the effect of reset spring 17, when moving to the inner wall department of butt at the bellows, restrict the inner wall of bellows and handle, play anti-drop effect again.
In a further preferable mode of this embodiment, the clamping portion 152 is located inside the sealing member 3, and the cross section of the guide channel 11 is a T-shaped structure.
Example 2:
a construction method of a brand new thread-shaped metal corrugated pipe joint comprises the following steps:
A. firstly, adjusting the adjusting part 12 to push the fixing frame 13 to move to one side close to the central axis of the connecting pipe body 1 along the guide channel 11, in the process, the clamping part 152 of the clamping claw 15 moves inwards along the length direction of the guide rail 16 under the action of the guide channel 11, and the guide part 151 moves inwards along the length direction of the guide rail 16 along with the clamping claw and compresses the return spring 17;
B. secondly, separating the corrugated pipe from a group of positioning holes 8 close to one side of the central axis of the corrugated pipe by adjusting the position of a positioning pin 10, moving the corrugated pipe to be connected to the group of positioning holes 8 far away from one side of the central axis of the corrugated pipe and matching with the positioning holes 8 at the position, then connecting the corrugated pipe to be connected with a connecting pipe body 1 through threads until the end part of the corrugated pipe abuts against the side wall of a fixing ring 2 and compresses a sealing element 3, wherein in the process of connecting the corrugated pipe and the connecting pipe body 1 through threads, a first anti-release sheet 4 can reversely prevent the corrugated pipe from reversely withdrawing from the inside of the connecting pipe body 1 along the length direction of the connecting pipe body 1, separating the corrugated pipe from the group of positioning holes 8 far away from one side of the central axis of the corrugated pipe by adjusting the position of the positioning pin 10, moving the corrugated pipe to the group of positioning holes 8 close to one side of the central axis of the corrugated pipe and matching with the positioning holes 8 at the position;
C. the reverse adjustment adjusting member 12 moves the fixing frame 13 away from the central axis of the connecting pipe body 1 under the action of the reset member 14, and then the reset spring 17 pushes the two guide portions 151 outwards, and simultaneously the clamping portion 152 extends outwards and abuts against the inner wall of the corrugated pipe.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. The substitution may be of partial structures, devices, method steps, or may be a complete solution. The technical solution and the inventive concept thereof according to the present invention should be equally replaced or changed within the protection scope of the present invention.
Claims (4)
1. The brand new thread-shaped metal corrugated pipe joint is characterized by comprising a connecting pipe body (1) in threaded matching connection with a corrugated pipe, wherein a fixing ring (2) is fixedly arranged inside the connecting pipe body (1), and sealing parts (3) are arranged on two sides of the fixing ring (2);
the anti-disengaging device comprises a connecting pipe body (1), wherein anti-disengaging assemblies are arranged at two ends of the connecting pipe body (1), each anti-disengaging assembly comprises a fixing piece (6) fixedly arranged at the end of the connecting pipe body (1) and a first anti-disengaging piece (4) rotatably connected to the inner side of the fixing piece (6), a torsion spring is arranged at the rotating connection position of each anti-disengaging piece, and a claw block (5) is arranged at the free end of each anti-disengaging piece (4);
the anti-separation assembly further comprises a mounting groove (7), positioning holes (8) and a second anti-separation sheet (9), the mounting groove (7) is formed in the end face of the fixing piece (6), two groups of positioning holes (8) are formed in the wall of the mounting groove (7), an adjusting structure is arranged on the second anti-separation sheet (9), and the second anti-separation sheet (9) is matched with the two groups of positioning holes (8) through the adjusting structure;
the adjusting structure comprises a positioning pin (10) arranged on the second anti-falling piece (9) in a sliding mode and a spring arranged on one side, back to the positioning hole (8), of the positioning pin (10), and the positioning pin (10) is matched with the positioning hole (8);
the fixing ring (2) is circumferentially provided with a plurality of positioning assemblies, each positioning assembly comprises a guide channel (11), an adjusting piece (12) and a clamping unit, each guide channel (11) is arranged on the side wall of the corresponding fixing ring (2), each adjusting piece (12) is connected to the corresponding fixing ring (2) through threads, one end of each adjusting piece is located inside the corresponding guide channel (11), the other end of each adjusting piece is connected with the corresponding connecting pipe body (1) through threads, part of each adjusting piece extends to the outer side of the corresponding connecting pipe body (1), each clamping unit is arranged inside the corresponding guide channel (11), and one side of each clamping unit is abutted to the end of the corresponding adjusting piece (12);
the clamping unit comprises a fixing frame (13) and a resetting piece (14), one side of the fixing frame (13), which is back to the adjusting piece (12), is fixedly connected with the resetting piece (14), one end, which is far away from the fixing frame (13), of the resetting piece (14) is fixedly connected to the side wall of the guide channel (11), and the fixing frame (13) is provided with a clamping structure;
the joint structure includes joint claw (15), guide rail (16) and reset spring (17), joint claw (15) symmetry is provided with two, two one side that joint claw (15) is relative all slides and sets up inside guide rail (16), guide rail (16) inside is provided with reset spring (17), reset spring (17)'s both ends respectively with corresponding joint claw (15) fixed connection.
2. The novel threaded metal bellows joint according to claim 1, wherein the clamping claw (15) comprises a guide portion (151) and a clamping portion (152) which are integrally connected, the guide portion (151) is slidably disposed inside the guide rail (16), and an included angle between the clamping portion (152) and a side wall opposite to the guide portion (151) is an obtuse angle.
3. The joint of new threaded metal corrugated pipes as claimed in claim 2, wherein the snap-in part (152) is located inside the sealing member (3), and the cross-section of the guide channel (11) is a T-shaped structure.
4. The construction method of the brand-new thread-shaped metal corrugated pipe joint as claimed in claim 3, characterized by comprising the following steps of:
A. firstly, adjusting an adjusting piece (12) to push a fixing frame (13) to move towards one side close to the central axis of a connecting pipe body (1) along a guide channel (11), wherein a clamping part (152) of a clamping claw (15) moves inwards along the length direction of a guide rail (16) under the action of the guide channel (11) in the process, and a guide part (151) moves inwards along the length direction of the guide rail (16) and compresses a return spring (17);
B. secondly, the positioning pin (10) is adjusted to separate from a group of positioning holes (8) close to one side of the central axis of the corrugated pipe, and moves to a group of positioning holes (8) on one side far away from the central axis of the corrugated pipe and is matched with the positioning holes (8) on the position, then the corrugated pipe to be connected is connected with the connecting pipe body (1) through threads until the end part of the corrugated pipe is abutted against the side wall of the fixing ring (2) and compresses the sealing element (3), in the process of threaded connection of the corrugated pipe and the connecting pipe body (1), the first anti-falling sheet (4) can reversely prevent the corrugated pipe from reversely withdrawing from the inside of the connecting pipe body (1) along the length direction of the connecting pipe body (1), and the corrugated pipe is separated from a group of positioning holes (8) on one side far away from the central axis of the corrugated pipe by adjusting the position of the positioning pin (10), and moving to a group of positioning holes (8) close to one side of the central axis of the corrugated pipe and matching with the positioning holes (8) at the positions;
C. the reverse adjustment regulating part (12), fixed frame (13) move to one side of keeping away from connecting body (1) axis under the effect of piece (14) that resets, and reset spring (17) will be acted on two guide part (151) and are pushed out to the outside thereupon, and joint portion (152) also stretches outwards thereupon and butt on the inner wall of bellows simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110027755.0A CN112832464B (en) | 2021-01-11 | 2021-01-11 | Brand-new thread-shaped metal corrugated pipe joint and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110027755.0A CN112832464B (en) | 2021-01-11 | 2021-01-11 | Brand-new thread-shaped metal corrugated pipe joint and construction method |
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| CN112832464A CN112832464A (en) | 2021-05-25 |
| CN112832464B true CN112832464B (en) | 2022-05-13 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004251065A (en) * | 2003-02-21 | 2004-09-09 | Oriental Construction Co Ltd | Sealing structure and sealing method of sheath made of plastic for inserting pc steel material |
| CN104937187A (en) * | 2013-06-17 | 2015-09-23 | 东拓工业株式会社 | Sheath conduit structure |
| CN207093994U (en) * | 2017-06-01 | 2018-03-13 | 游立钦 | A kind of water swivel |
| CN208845892U (en) * | 2018-10-18 | 2019-05-10 | 秦春阳 | A kind of highway bridge box beam plastic film capicitor that practicability is high |
| CN210827119U (en) * | 2019-07-31 | 2020-06-23 | 中国建筑第四工程局有限公司 | Box bridge construction prestressing force pipe connector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9493951B2 (en) * | 2014-05-19 | 2016-11-15 | Felix Sorkin | Duct coupler for post-tensioned concrete member |
-
2021
- 2021-01-11 CN CN202110027755.0A patent/CN112832464B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004251065A (en) * | 2003-02-21 | 2004-09-09 | Oriental Construction Co Ltd | Sealing structure and sealing method of sheath made of plastic for inserting pc steel material |
| CN104937187A (en) * | 2013-06-17 | 2015-09-23 | 东拓工业株式会社 | Sheath conduit structure |
| CN207093994U (en) * | 2017-06-01 | 2018-03-13 | 游立钦 | A kind of water swivel |
| CN208845892U (en) * | 2018-10-18 | 2019-05-10 | 秦春阳 | A kind of highway bridge box beam plastic film capicitor that practicability is high |
| CN210827119U (en) * | 2019-07-31 | 2020-06-23 | 中国建筑第四工程局有限公司 | Box bridge construction prestressing force pipe connector |
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| CN112832464A (en) | 2021-05-25 |
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