CN108343792B - Pipe connecting piece and processing method thereof - Google Patents
Pipe connecting piece and processing method thereof Download PDFInfo
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- CN108343792B CN108343792B CN201810177959.0A CN201810177959A CN108343792B CN 108343792 B CN108343792 B CN 108343792B CN 201810177959 A CN201810177959 A CN 201810177959A CN 108343792 B CN108343792 B CN 108343792B
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- main body
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- tooth
- pipeline
- annular main
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- 238000003672 processing method Methods 0.000 title abstract description 8
- 239000000463 material Substances 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 7
- 238000003754 machining Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000000137 annealing Methods 0.000 description 25
- 238000005097 cold rolling Methods 0.000 description 14
- 238000001816 cooling Methods 0.000 description 14
- 230000007704 transition Effects 0.000 description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 238000003466 welding Methods 0.000 description 3
- 229910000619 316 stainless steel Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
Abstract
The application relates to the technical field of pipe connectors, in particular to a pipe connector, which comprises: the rack belt comprises an annular main body and a plurality of tooth-shaped structures extending from two side edges in the width direction of the annular main body to the circle center direction of the annular main body, and the tooth-shaped structures are used for being embedded into pipelines when the pipelines are connected; the annular body is provided with an open end which is closed by a connecting structure when in use. According to the technical scheme, the pipe connecting piece is simple in connection mode and low in leakage rate after connection. The application also discloses a processing method of the pipe connecting piece.
Description
Technical Field
The application relates to the technical field of pipe connectors, in particular to a pipe connector and a processing method thereof.
Background
In the process of installing the original PVC municipal sewage pipeline, an ultrasonic friction welding method is mostly adopted, namely, PVC pipes are connected after being hot melted. This connection must be made using special ultrasonic welding equipment during installation, wherein the transportation and installation of the equipment adds to the corresponding labor costs.
In view of the defects existing in the existing PVC sewage pipeline connection process, the inventor based on the practical experience and professional knowledge which are rich for years and are applied to the product engineering, and the application of the theory is matched, researches and innovations are actively carried out, so that a pipe connecting piece and a processing method thereof are created, and the pipe connecting piece has higher practicability.
Disclosure of Invention
In order to solve the technical problems, the application provides a pipe connecting piece with a simple connecting mode.
The application relates to a pipe connecting piece, which comprises:
the rack belt comprises an annular main body and a plurality of tooth-shaped structures extending from two side edges in the width direction of the annular main body to the circle center direction of the annular main body, wherein the tooth-shaped structures are used for being embedded into a pipeline when the pipeline is connected;
the annular body is provided with at least one open end which is closed in use by a connecting structure.
Further, the tooth-like structures located at both sides in the width direction of the annular body are arranged in one-to-one correspondence.
Further, the annular body is disposed perpendicularly to the tooth structure.
Further, the outer part of the joint of the annular main body and the tooth-shaped structure is in transition through a round angle.
Further, after the opening ends are closed, rectangular or isosceles trapezoid openings are formed between two adjacent tooth-shaped structures.
Further, when the opening is an isosceles trapezoid, an upper base of the isosceles trapezoid coincides with an edge of the annular main body.
Further, an arc notch is formed in the edge, located between two adjacent toothed structures, of the annular main body.
Further, the toothed structures located on two sides of the annular main body in the width direction and the annular main body form a cavity with a concave section, and an elastic sealing structure is arranged in the cavity.
Further, the tooth-like structure is tapered in the direction of its length extension to form a blade embedded in the pipe.
Further, the blade is formed by the tooth structure being inclined partially or totally inwardly with respect to the outer surface of the pipe connection or by the outer and inner surfaces being inclined towards each other.
Further, the outer surface portion is inclined specifically, the inclination starts from a position of 1/3 to 2/3 of the outer surface in a height in a direction away from the annular main body.
Further, the intersection line of the outer surface and the inner surface is a straight line.
Further, an intersection line of the inclined portion and the non-inclined portion of the outer surface is a straight line.
A processing method of a pipe connecting piece comprises the following steps:
step one: processing the rod-shaped material into a strip-shaped structure;
step two: removing part of materials from two sides of the strip-shaped structure in the width direction to form a plurality of tooth-shaped structures;
step three: bending both sides of the strip-shaped structure to form a structure with a main body part and a concave section bent relative to both sides of the main body part;
step four: the body portion is bent to form a ring-shaped structure having an open end.
Further, in the first step, the rod-shaped material is processed into a strip-shaped structure by a cold working method.
In the second step, a stamping mode is adopted to remove part of materials.
Further, the connection structure is welded to both ends of the body portion.
Compared with the prior art, the application has the beneficial effects that: in the use process of the pipe connecting piece, the toothed structures positioned at the two sides of the annular main body squeeze the surface of the pipe through the tightening effect of the connecting structure, and when the squeezing force reaches a certain value, the toothed structures at the two sides are respectively embedded into two pipelines to be connected, so that the connection of the two pipelines is realized, the original ultrasonic welding equipment is omitted, the connection mode is simple, and the sealing effect can be effectively ensured through the joint between the pipelines and the joint between the annular main body and the pipelines.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic view of a pipe connector (the connection structure is not shown) according to the present application;
FIG. 2 is a partial schematic view of FIG. 1;
FIG. 3 is a front view of a pipe coupling according to the present application;
FIG. 4 is a fragmentary section view taken at A-A in FIG. 3;
FIG. 5 is a process flow diagram of processing a ribbon structure;
the reference numerals in the drawings: the annular main body 1, the arc-shaped notch 11, the tooth-shaped structure 2, the outer surface 21, the open end 3, the opening 4, the cavity 5 and the elastic sealing structure 6.
Detailed Description
The following describes in further detail the embodiments of the present application with reference to the drawings and examples. The following examples are illustrative of the application and are not intended to limit the scope of the application.
The embodiment of the application is written in a progressive manner.
As shown in fig. 1 to 3, a pipe joint comprises: the rack belt comprises an annular main body 1 and a plurality of tooth-shaped structures 2 extending from two side edges in the width direction of the annular main body 1 to the circle center direction of the annular main body 1, wherein the tooth-shaped structures 2 are used for being embedded into pipelines when the pipelines are connected; the annular body 1 is provided with at least one open end 3, the open end 3 being closed in use by a connecting structure. The connecting structure can refer to the existing clamp connecting structure, the toothed structures 2 positioned on two sides of the annular main body 1 squeeze the surface of a pipeline through the tightening effect of the connecting structure in the using process of the pipe connecting piece, and when the squeezing force reaches a certain value, the toothed structures 2 on two sides are respectively embedded into two pipelines to be connected, so that the connection of the two pipelines is realized.
As a preference of the above embodiment, in order to avoid the effect of the pipe connector being affected by torsion in the use process, the toothed structures 2 on both sides of the annular main body 1 in the width direction are arranged in a one-to-one correspondence, which ensures the symmetry of the acting force of the two pipes on the pipe connector to a certain extent relative to the asymmetric design; the annular main body 1 is arranged vertically to the tooth-shaped structure 2, and the aim of arranging the tooth-shaped structure 2 is to maximally realize the aim of cutting into a pipeline by the extrusion force caused by the pipeline due to the tightening effect of the connecting structure, and no component force is formed; in order to avoid injury to operators in the using process, the joint of the annular main body 1 and the tooth-shaped structure 2 is externally in a fillet transition, and the fillet transition can be naturally formed in a processing mode such as bending.
After the opening ends 3 are closed, rectangular or isosceles trapezoid openings 4 are formed between two adjacent tooth-shaped structures 2, the two sides of the tooth-shaped structures 2 are blocked by the existence of the openings 4, and the movement in the circumferential direction is avoided, wherein the strength of the tooth-shaped structures 2 is determined by the shape of the openings 4, and the rectangular or isosceles trapezoid is a better choice; when the opening 4 is isosceles trapezoid, the upper bottom of the isosceles trapezoid coincides with the edge of the annular main body 1, the arrangement reduces the stress area of the end part of the toothed structure 2, reduces the difficulty of embedding the pipeline, but simultaneously maintains the up-down dimension ratio of the toothed structure 2, and avoids the deformation condition of the pipeline caused by overlarge root part in the embedding process.
The arc notch 11 is arranged on the annular main body 1 and positioned between the two adjacent tooth-shaped structures 2, and the deformation degree of the annular main body 1 when the tooth-shaped structures 2 are generated in a bending mode and the arc notch 11 is reduced.
The tooth-shaped structures 2 positioned on two sides of the width direction of the annular main body 1 and the annular main body 1 form a cavity 5 with a concave section, an elastic sealing structure 6 is arranged in the cavity 5, after the pipe connecting piece is installed, the sealing effect is ensured through the fitting of the pipe and the pipe end part and the fitting of the annular main body 1 and the pipe joint, the clamping force requirement on the pipe connecting piece is extremely high, once the fitting degree is insufficient, leakage events are easy to occur, the requirement on the clamping force is reduced through the arrangement of the elastic sealing structure 6, and the gap between two pipes can be effectively sealed through the deformation of the elastic sealing structure 6.
In order to reduce the difficulty of embedding the tooth-shaped structure 2 into the pipeline, in this embodiment, the pressure is increased by reducing the contact area, and the tooth-shaped structure 2 is gradually folded along the length extension direction to form a blade embedded into the pipeline; wherein the edge is formed by the tooth structure 2 being inclined partially or totally inwards with respect to the outer surface 21 of the pipe connection or by the outer surface 21 and the inner surface being inclined towards each other, wherein the form of the structure is specifically selected according to the machining process; in order to ensure the strength of the toothed structure 2, the partial inclination is preferable, when the outer surface 21 is partially inclined, the inclination starts from the position of 1/3-2/3 of the height of the outer surface 21 in the direction away from the annular main body 1, and the proper position is selected, so that the toothed structure 2 is embedded into a pipeline in a relatively gentle manner, and extrusion deformation of the pipeline is reduced, wherein in order to reduce the processing difficulty, the intersection line of the outer surface 21 and the inner surface is a straight line, the tangent line of the blade when the blade is tangent to the pipeline is a straight line in the process of embedding the pipeline, and the connecting line of the inclined part and the non-inclined part of the outer surface 21 is a straight line.
A processing method of a pipe connecting piece can be used for processing the pipe connecting piece and comprises the following steps:
step one: processing the rod-shaped material into a strip-shaped structure;
step two: removing part of materials from two sides of the strip-shaped structure in the width direction in a stamping mode to form a plurality of tooth-shaped structures;
step three: bending the tooth shapes at two sides of the strip-shaped structure by a bending machine so that the strip-shaped structure is provided with a main body part and a structure with a concave section bent relative to the two sides of the main body part;
step four: bending the main body part to form an annular structure with an opening end, wherein the annular structure is wound on the outer surface of the pipeline;
step five: and connecting structures for closing the open ends are welded at the two ends of the main body part.
In order to ensure that the strength of the pipe connecting piece realized by the processing method is effectively ensured, the processing of the strip-shaped structure in the step one is realized by the following steps:
step 1: blanking, namely taking a rod-shaped material 1 with a required length as a raw material for molding a strip-shaped base material, wherein the rod-shaped material is made of stainless steel, and particularly is 316 stainless steel;
step 2: the rod-shaped material is formed into a strip-shaped structure through at least two drawing operations, wherein the material is annealed before any drawing operation, the material can reach the required requirement through the drawing operation, and as the technological parameters can not be reached through the continuous drawing, the material is subjected to multiple drawing forming, and the annealing purpose after each drawing operation is to soften the material, so that the stress is eliminated;
step 3: the strip-shaped structure is finished by at least two cold rolling operations, wherein the material is annealed before any one cold rolling operation, and the material can be made to meet the required requirements by the cold rolling operation, wherein the purpose of the annealing after the cold rolling operation is to soften the material and relieve the stress.
To facilitate implementation by those skilled in the art, specific parameters in the above steps are as follows:
step 1: blanking, namely taking a rod-shaped material with a required length as a raw material for molding a strip-shaped base material, wherein the rod-shaped material is made of stainless steel, and particularly is 316 stainless steel;
step 2: drawing and forming, wherein the rough machining of the strip-shaped material is realized through 7 drawing operations in the embodiment;
step 2.1: annealing, wherein the annealing is performed in a vacuum environment in which only hydrogen exists, and the temperature of the rod-shaped material is increased to between 850 and 950 ℃ through the annealing furnace within 2 hours; after the temperature reaches 850-950 ℃, keeping the temperature in a hearth for 8-9 hours, cooling to 500-650 ℃ along with a furnace, and cooling to normal temperature by opening the furnace;
step 2.2: drawing and forming the annealed rod-shaped material for the first time by adopting drawing equipment to form a rough machining semi-finished product with a cross section approximately rectangular and four arc-shaped sides;
step 2.3: annealing, wherein the annealing is carried out in a vacuum environment in which only hydrogen exists, and the temperature of the material in the step 3.1 is increased to between 850 and 950 ℃ through an annealing furnace within 2 hours; after the temperature reaches 850-950 ℃, keeping the temperature in a hearth for 8-9 hours, cooling to 500-650 ℃ along with a furnace, and cooling to normal temperature by opening the furnace;
step 2.4: carrying out second drawing forming on the material in the step 2.3 by adopting drawing equipment, so that the width of the rectangle is further reduced;
step 2.5: annealing, wherein the annealing is carried out in a vacuum environment in which only hydrogen exists, and the temperature of the material in the step 2.4 is increased to between 850 and 950 ℃ through an annealing furnace within 2 hours; after the temperature reaches 850-950 ℃, keeping the temperature in a hearth for 8-9 hours, cooling to 500-650 ℃ along with a furnace, and cooling to normal temperature by opening the furnace;
step 2.6: carrying out third drawing forming on the material in the step 2.5 by adopting drawing equipment, so that the material in the step 2.5 forms an approximate arch structure with a cross section sequentially comprising an arc edge, a transition edge, a straight edge and a transition edge, and four sides are transited by round corners, wherein the two transition edges are symmetrically arranged on two sides of the straight edge, and an inner angle formed between the two transition edges and the straight edge is an obtuse angle;
step 2.7: annealing, wherein the annealing is carried out in a vacuum environment in which only hydrogen exists, and the temperature of the material in the step 2.6 is increased to between 850 and 950 ℃ through an annealing furnace within 2 hours; after the temperature reaches 850-950 ℃, keeping the temperature in a hearth for 8-9 hours, cooling to 500-650 ℃ along with a furnace, and cooling to normal temperature by opening the furnace;
step 2.8: carrying out fourth drawing forming on the material in the step 2.7 by adopting drawing equipment, so that the material in the step 2.7 forms an isosceles trapezoid structure with a cross section sequentially comprising a straight edge, a transition edge, a straight edge and a transition edge, and four edges are transited through round corners;
repeating the steps 2.7 and 2.8, and respectively carrying out fifth to seventh annealing and drawing operations on the material, so that the height of the isosceles trapezoid in the step 2.8 is gradually reduced, the gradient of the isosceles trapezoid waist is gradually increased, and the radius of the transition fillet is gradually reduced;
step 3, cold rolling forming, namely realizing semi-finishing to finish machining of the strip-shaped material through 3 times of cold rolling operation in the embodiment, wherein the cold rolling is used for ensuring the product precision;
step 3.1: annealing, wherein the annealing is carried out in a vacuum environment in which only hydrogen exists, and the temperature of the material in the step 2 is increased to between 850 and 950 ℃ through an annealing furnace within 2 hours; after the temperature reaches 850-950 ℃, keeping the temperature in a hearth for 8-9 hours, cooling to 500-650 ℃ along with a furnace, and cooling to normal temperature by opening the furnace;
step 3.2: performing first cold rolling forming on the material subjected to rough machining in the step 3 by adopting cold rolling equipment;
step 3.3: annealing, wherein the annealing is performed in a vacuum environment in which only hydrogen exists, and the temperature of the strip-shaped material in the step 3.2 is increased to between 850 and 950 ℃ through an annealing furnace within 2 hours; after the temperature reaches 850-950 ℃, keeping the temperature in a hearth for 8-9 hours, cooling to 500-650 ℃ along with a furnace, and cooling to normal temperature by opening the furnace;
step 3.4: carrying out secondary cold rolling forming on the strip-shaped material in the step 3.3 by adopting cold rolling equipment to finish semi-finishing of the strip-shaped material;
step 3.5: annealing, wherein the annealing is performed in a vacuum environment in which only hydrogen exists, and the temperature of the strip-shaped material in the step 3.4 is increased to between 850 and 950 ℃ through an annealing furnace within 2 hours; after the temperature reaches 850-950 ℃, keeping the temperature in a hearth for 8-9 hours, cooling to 500-650 ℃ along with a furnace, and cooling to normal temperature by opening the furnace;
step 3.6: and (3) carrying out cold rolling forming on the strip-shaped material in the step (3.5) for the third time by adopting cold rolling equipment, and finishing the strip-shaped material.
And after any annealing operation is finished, drying operation is required, wherein the purpose of drying is to reduce the surface hardness of the material.
Straightening of the strip material is required before any cold rolling operation, wherein the straightening aims at ensuring the precision of the next process.
The foregoing is merely a preferred embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the application.
Claims (5)
1. A pipe connection comprising: the rack belt comprises an annular main body (1) and a plurality of tooth-shaped structures (2) extending from two side edges in the width direction of the annular main body (1) to the circle center direction of the annular main body (1), wherein the tooth-shaped structures (2) are used for being embedded into pipelines when the pipelines are connected; the annular body (1) is provided with at least one open end (3), the open end (3) being closed in use by a connecting structure;
the toothed structures (2) positioned on two sides of the annular main body (1) in the width direction and the annular main body (1) form a cavity (5) with a concave section, an elastic sealing structure (6) is arranged in the cavity (5), and after the pipe connecting piece is installed, the sealing effect is ensured through the fitting of a pipeline and the end part of the pipeline and the fitting of the annular main body 1 and a pipeline joint;
the annular main body (1) is perpendicular to the toothed structure (2), so that the aim of cutting into a pipeline is fulfilled to the greatest extent by the extrusion force caused by the pipeline due to the tightening effect of the connecting structure, and no component force is formed; the tooth-shaped structures (2) are gradually folded in the length extending direction to form blades embedded into the pipeline;
the blade is formed by the tooth structure (2) being inclined partially or totally inwards with respect to the outer surface (21) of the pipe connection, or by the outer surface (21) and the inner surface being inclined towards each other;
the outer surface (21) is inclined partially, namely, the inclination starts from the position of the outer surface (21) which is away from the position of 1/3-2/3 of the height of the annular main body (1), so that the toothed structure 2 is embedded into the pipeline in a gentle mode, and the extrusion deformation of the pipeline is reduced.
2. A tubular product connection according to claim 1, characterized in that, after the closing of the open ends (3), openings (4) with rectangular or isosceles trapezoid cross-section are formed between two adjacent tooth-like structures (2).
3. A pipe connection according to claim 2, characterized in that when the opening (4) is an isosceles trapezoid, the upper base of the isosceles trapezoid coincides with the edge of the ring-shaped body (1).
4. A pipe connection according to claim 3, characterized in that the edge of the annular body (1) between two adjacent tooth structures (2) is provided with an arc-shaped slot (11).
5. A method of machining a pipe connection according to any one of claims 1 to 4, comprising the steps of:
step one: processing the rod-shaped material into a strip-shaped structure;
step two: removing part of materials from two sides of the strip-shaped structure in the width direction to form a plurality of tooth-shaped structures;
step three: bending the toothed structures at two sides of the strip-shaped structure to form the strip-shaped structure with a main body part and a structure with a concave section bent relative to the two sides of the main body part;
step four: the body portion is bent to form a ring-shaped structure having an open end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810177959.0A CN108343792B (en) | 2018-03-02 | 2018-03-02 | Pipe connecting piece and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810177959.0A CN108343792B (en) | 2018-03-02 | 2018-03-02 | Pipe connecting piece and processing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108343792A CN108343792A (en) | 2018-07-31 |
| CN108343792B true CN108343792B (en) | 2023-12-12 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810177959.0A Active CN108343792B (en) | 2018-03-02 | 2018-03-02 | Pipe connecting piece and processing method thereof |
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| CN (1) | CN108343792B (en) |
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| CN105745483A (en) * | 2013-10-24 | 2016-07-06 | 安格斯公司 | Anti-rotation device for hydraulic connectors |
| KR101788002B1 (en) * | 2016-10-07 | 2017-10-19 | 에스아이티이엔지 주식회사 | Coupling for pipe |
| CN207989940U (en) * | 2018-03-02 | 2018-10-19 | 江苏浩峰汽车附件有限公司 | A kind of tube connection piece |
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| CN108343792A (en) | 2018-07-31 |
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