CN216143093U - High-speed railway is high life corrugated metal pipe for shaft coupling - Google Patents
High-speed railway is high life corrugated metal pipe for shaft coupling Download PDFInfo
- Publication number
- CN216143093U CN216143093U CN202120343405.0U CN202120343405U CN216143093U CN 216143093 U CN216143093 U CN 216143093U CN 202120343405 U CN202120343405 U CN 202120343405U CN 216143093 U CN216143093 U CN 216143093U
- Authority
- CN
- China
- Prior art keywords
- pipe
- corrugated pipe
- limited
- bellows
- interface
- 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.)
- Active
Links
Images
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model belongs to the technical field of couplings, and particularly relates to a long-service-life metal corrugated pipe for a high-speed rail coupling, which is made of a seamless double-layer stainless steel pipe blank or a welded seam double-layer stainless steel pipe blank through hydraulic forming, wherein the metal corrugated pipe is provided with 6 annular corrugations with consistent structural sizes, two ends of the metal corrugated pipe are provided with straight wall end interfaces, each straight wall end interface comprises a first interface and a second interface, and the size range of the outer diameter of the corrugated pipe is limited to 140 +/-1.25 mm; the size range of the inner diameter of the corrugated pipe is limited to 108 +/-0.7 mm; the size range of the total length of the corrugated pipe is limited to 60 +/-2.3 mm; the size range of the first interface length of the corrugated pipe is limited to 7 +/-0.3 mm; the size range of the length of the second interface of the corrugated pipe is limited to 7 +/-0.3 mm; maximum deflection angle of bellows: 3 degrees; the bellows wave thickness is limited to a dimension of 4.9 mm. The long-service-life metal corrugated pipe for the high-speed rail coupling disclosed by the utility model adopts a double-layer pipe blank embedding structure, so that the rigidity of the corrugated pipe is effectively reduced, and the strength is improved.
Description
Technical Field
The utility model relates to a long-service-life metal corrugated pipe for a high-speed rail coupler. Belongs to the technical field of couplings.
Background
The development of high-speed railways and urban rail transit not only shortens the distance between areas and drives the economic development of the areas, but also has the characteristics of low energy consumption, safety, environmental protection and the like, and is a key and rapidly-developing industry in China. The coupler is one of the core components of the rail locomotive, the coupler for the locomotive in China depends on import for a long time, and the whole localization of the coupler is urgent along with the comprehensive promotion of the localization work of the rail locomotive. After a certain research institute in China is entrusted by a middle train group to carry out the localization work of the coupler for the locomotive, the core component metal corrugated pipe assembly bearing the working conditions of high frequency, heavy load, three-dimensional full circumferential compression, tension and the like in the coupler can not reach the technical index of fatigue life, so that the localization work of the coupler is slow. The main functions of the metal corrugated pipe assembly in the shaft coupling are as follows: 1. the balance reset of the displacement of the inner teeth of the coupler is met; 2. the complete sealing of gear meshing lubricating oil is realized; 3. the radial, axial and deflection angle three-way deflection among the shafts is adapted; 4. providing the necessary flexibility of the drive shaft to reduce transmission noise.
The double-layer metal corrugated pipe of the type (WWG140 multiplied by 6 assembly) has high performance and reliability requirements, the service life of the double-layer metal corrugated pipe exceeds 2 multiplied by 107 times, and after strict test verification, the performance of the high-life metal corrugated pipe developed for the coupling by the company completely meets the design requirements of customers, so that the localization is successfully realized. After the company undertakes the project development work, the problem that the fatigue life of the product does not reach the standard is quickly solved, the product is applied to small-batch production at present, more domestic rail locomotives carry domestic couplings along with the continuous deepening of the domestic work of the rail locomotive, and the market prospect is excellent.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high-service-life metal corrugated pipe for a high-speed rail coupling, which adopts a double-layer pipe blank embedded structure, effectively reduces the rigidity of the corrugated pipe, improves the strength, and solves the problems in the prior art compared with a common product, namely a high-speed rail coupling with better pressure resistance, larger displacement and longer service life.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the utility model provides a high-speed railway is high life corrugated metal pipe for coupling, is made through hydroforming by seamless double-deck stainless steel pipe or has welding seam double-deck stainless steel pipe, and corrugated metal pipe has the unanimous annular ripple of 6 structure sizes and both ends have straight wall end interface, and straight wall end interface includes first interface and second interface, and corrugated metal pipe's concrete size limits to be:
the size range of the outer diameter of the corrugated pipe is limited to 140 +/-1.25 mm;
the size range of the inner diameter of the corrugated pipe is limited to 108 +/-0.7 mm;
the size range of the total length of the corrugated pipe is limited to 60 +/-2.3 mm;
the size range of the first interface length of the corrugated pipe is limited to 7 +/-0.3 mm;
the size range of the length of the second interface of the corrugated pipe is limited to 7 +/-0.3 mm;
maximum deflection angle of bellows: 3 degrees;
the size of the corrugated pipe wave thickness is limited to 4.9 mm;
the wave pitch of the corrugated pipe is limited to 8.2 mm;
and the stiffness value of the corrugated tube obtained in accordance with the above-defined dimensional range is defined at 10 + -2N/mm.
An inner lining ring is arranged at the straight wall end interface close to the center of the stainless steel pipe blank, a movable flange and a fixed flange are arranged at the straight wall end interface through the inner lining ring, and 8M 4 threaded holes are formed in the fixed flange.
The double-layer stainless steel pipe blank comprises an inner pipe and an outer pipe, wherein the inner diameter of the outer pipe is 0.5mm larger than the outer diameter of the inner pipe.
And two ports of the inner pipe and the outer pipe are respectively welded to realize bidirectional sealing.
The double-layer stainless steel pipe blank is formed by welding pipe blanks (stainless steel strips are welded into pipes), cutting (the welded pipe blanks are cut into sections), sleeving (removing burrs of interfaces, inserting one end interface of an inner layer pipe blank into an outer layer pipe blank, and requiring symmetrical positions of two welding seams), leveling pipe orifices (the lengths of the inner layer pipe blank and the outer layer pipe blank are integrated to be consistent), sealing (sealing the pipe orifices at two ends by using a roll welding mode), hydroforming (starting from a chuck, arranging a die plate and a positioning wedge according to the steps of a process template-positioning wedge-A front template-positioning wedge-middle template-positioning wedge-A rear template-positioning wedge-process template positioning wedge), deoiling (the molded corrugated pipe is filled into a deoiling cage and is immersed into a deoiling tank), Pickling (pickling at normal temperature for 3-5 minutes), turning the interface (fixing a product by using a special fixture, turning the interface), shaping (impacting waves during compression to control the effective length), thermal stabilization (vacuum thermal stabilization, the temperature is 300 +/-5 ℃, and keeping the temperature for a period of time), checking (detecting the geometric dimension and the surface quality of the corrugated pipe, simultaneously checking the dimensions and the surface quality of an inner lining ring, a fixed flange and a movable flange), matching the corrugated pipe with the inner lining ring and the fixed flange, cleaning (cleaning the welding part of the flange and the corrugated pipe), welding the flange, detecting the air tightness (requiring the leakage rate to be less than 1 multiplied by 10-8 Pa.m 3/s), shaping (impacting waves during compression to control the overall height) and detecting the appearance.
The double-layer stainless steel pipe blank realizes the shaping of the corrugated pipe through a shaping groove, the width of the shaping groove is 5-10mm larger than that of the metal corrugated pipe, and the width of the shaping groove is 145-150 mm. The shaping groove which is 5-10mm larger than the corrugated pipe can prevent the corrugated pipe from shifting left and right in the shaping process.
A bottom pressing plate, a metal corrugated pipe and a top pressing plate are sequentially placed in the shaping groove from bottom to top, the cross section of the bottom pressing plate is in an inverted T shape and comprises a flat pressing plate and a tenon, and the tenon is matched with the central control position of the corrugated pipe. The tenon is matched with the central control position of the corrugated pipe to limit the corrugated pipe from inside to outside. The width of the tenon is 5-10mm smaller than the inner diameter of the corrugated pipe.
The hydraulic forming is realized through horizontal bellows former to double-deck stainless steel pipe, horizontal bellows former includes the frame and along the horizontal oil flushing pressure boost hydro-cylinder, bellows forming die and the top that sets gradually of frame, bellows forming die is including installing in proper order preceding diaphragm plate, location contract, middle diaphragm plate, location contract and back diaphragm plate on the double-deck stainless steel pipe, the shape of preceding diaphragm plate, middle diaphragm plate and back diaphragm plate is unanimous, includes inner circle and the outer lane of compriseing two semicircles, and rotatory the installation in the outer lane after the inner circle combination. The corrugated pipe adopts a double-layer pipe blank embedded structure, the rigidity of the corrugated pipe is effectively reduced, the strength is improved, the required pipe blank is formed by coiling and welding stainless steel thin-wall strips, and the welding problem of the ultrathin-wall stainless steel strips is mainly solved. After the corrugated pipe is formed, certain stress is formed on the corrugated part, and the residual stress existing in the product needs to be thoroughly eliminated to improve the use strength. The project thoroughly eliminates the residual internal stress of the corrugated pipe by selecting a high-temperature short-time stress relief mode through various process tests, stabilizes the product performance and the strength, determines a proper waveform structure and size parameters by theoretically calculating the product performance parameters and actually verifying, and meets the requirements of large displacement and long service life of the product.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram (1) of a long-life metal corrugated pipe for a high-speed rail coupling according to the present invention;
FIG. 2 is a schematic structural diagram (2) of a long-life metal bellows for a high-speed rail coupling according to the present invention;
FIG. 3 is a schematic structural view of a bellows forming mold of a long-life metal bellows for a high-speed rail coupling according to the present invention;
FIG. 4 is a schematic structural diagram of a die plate in a long-life metal bellows for a high-speed rail coupling according to the present invention;
FIG. 5 is a schematic structural view of a positioning wedge in a long-life metal bellows for a high-speed rail coupling according to the present invention;
FIG. 6 is a schematic structural view of a whole groove in a long-life metal bellows for a high-speed rail coupling according to the present invention;
fig. 7 is a schematic structural diagram of a bottom pressing plate in a long-life metal bellows for a high-speed rail coupling according to the present invention.
In the drawings, 1-inner collar; 2-fixing a flange; 3-a movable flange; 4-a bellows; 7-inner ring; 8-an outer ring; 9-positioning wedge; 10-a template plate; 11-a top pressure plate; 12-shaping the groove; 13-bottom platen; 14-tenon.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Fig. 1-fig. 7 illustrate a structural diagram of a long-life metal bellows 4 for a high-speed railway coupling, which is made of a seamless double-layer stainless steel pipe blank or a welded double-layer stainless steel pipe blank through hydraulic forming, the metal bellows 4 has 6 annular corrugations with the same structural size, and both ends of the metal bellows have straight wall end interfaces, each of the straight wall end interfaces includes a first interface and a second interface, and the specific size of the metal bellows 4 is defined as:
the size range of the outer diameter of the corrugated pipe 4 is limited to 140 +/-1.25 mm;
the size range of the inner diameter of the corrugated pipe 4 is limited to 108 +/-0.7 mm;
the dimension range of the total length of the corrugated pipe 4 is limited to 60 +/-2.3 mm;
the size range of the first interface length of the corrugated pipe 4 is limited to 7 +/-0.3 mm;
the size range of the length of the second interface of the corrugated pipe 4 is limited to 7 +/-0.3 mm;
maximum deflection angle of the bellows 4: 3 degrees;
the size of the wave thickness of the corrugated pipe 4 is limited to 4.9 mm;
the size of the wave pitch of the corrugated pipe 4 is limited to 8.2 mm;
and the rigidity value of the corrugated tube 4 obtained in accordance with the above-defined dimensional range is defined at 10 + -2N/mm.
An inner lining ring 1 is arranged at the straight wall end interface close to the center of the stainless steel pipe blank, a movable flange 3 and a fixed flange 2 are arranged at the straight wall end interface through the inner lining ring 1, and 8M 4 threaded holes are formed in the fixed flange. The double-layer stainless steel pipe blank comprises an inner pipe and an outer pipe, wherein the inner diameter of the outer pipe is 0.5mm larger than the outer diameter of the inner pipe. And two ports of the inner pipe and the outer pipe are respectively welded to realize bidirectional sealing.
The double-layer stainless steel pipe blank is formed by welding pipe blanks (stainless steel strips are welded into pipes), cutting (the welded pipe blanks are cut into sections), sleeving (removing burrs of interfaces, inserting one end interface of an inner layer pipe blank into an outer layer pipe blank, and requiring symmetrical positions of two welding seams), leveling pipe orifices (the lengths of the inner layer pipe blank and the outer layer pipe blank are integrated to be consistent), sealing (sealing the pipe orifices at two ends by using a roll welding mode), hydroforming (from a chuck, arranging a die plate and a positioning wedge 9 according to the steps of a process template, a positioning wedge 9, a front template, a positioning wedge 9, a middle template, a positioning wedge 9, a rear template, a positioning wedge 9, a process template positioning wedge 9), degreasing (the formed corrugated pipe 4 is put into a degreasing cage and is immersed into a degreasing tank), pickling (3-5 minutes at normal temperature), The method comprises the following steps of vehicle interface (fixing a product by using a special fixture, vehicle processing interface), shaping (wave collision during compression, effective length control), thermal stability (vacuum thermal stability, temperature of 300 +/-5 ℃, heat preservation for a period of time), inspection (detecting the geometric dimension and surface quality of the corrugated pipe 4, and simultaneously inspecting the dimensions and surface quality of the inner lining ring 1, the fixed flange 2 and the movable flange 3), vehicle matching (vehicle matching of the corrugated pipe 4 with the lining ring 1 and the fixed flange 2), cleaning (cleaning the welding part of the flange and the corrugated pipe 4), flange welding, air tightness detection (required leakage rate is less than 1 multiplied by 10-8 Pa.m 3/s), shaping (wave collision during compression, integral height control) and appearance detection, and processing and forming in multiple steps.
The double-layer stainless steel pipe blank realizes the shaping of the corrugated pipe 4 through a shaping groove 12, the width of the shaping groove 12 is 5-10mm larger than that of the metal corrugated pipe 4, and the width of the shaping groove 12 is 145-150 mm. The sizing grooves 12, which are 5-10mm larger than the corrugated tube 4, prevent the corrugated tube 4 from shifting left and right during sizing.
The whole-shaped groove 12 is sequentially provided with a bottom pressing plate 13, a metal corrugated pipe 4 and a top pressing plate 11 from bottom to top, the section of the bottom pressing plate 13 is in an inverted T shape and comprises a flat pressing plate and a tenon 14, and the tenon 14 is matched with the central control position of the corrugated pipe 4. The tenon 14 cooperates with the central position of the bellows 4 to limit the bellows 4 from inside to outside. The width of the tenon 14 is 5-10mm smaller than the inner diameter of the corrugated pipe 4.
The hydraulic forming of the double-layer stainless steel pipe blank is realized through a horizontal corrugated pipe 4 forming device, the horizontal corrugated pipe 4 forming device comprises a rack, and an oil flushing pressurizing oil cylinder, a corrugated pipe 4 forming die and a pushing oil cylinder which are transversely and sequentially arranged along the rack, the corrugated pipe 4 forming die comprises a front template plate 10, a positioning wedge 9, a middle template plate 10, a positioning wedge 9, a rear template plate 10, a positioning wedge 9 and a rear template plate 10 which are sequentially arranged on the double-layer stainless steel pipe blank, the shapes of the front template plate 10, the middle template plate 10 and the rear template plate 10 are consistent, the double-layer stainless steel pipe blank comprises an inner ring 7 and an outer ring 8 which are formed by two semicircles, and the inner ring 7 is rotatably arranged in the outer ring 8 after being combined.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model.
Claims (7)
1. The utility model provides a high-speed railway is high life corrugated metal pipe for coupling, is made through hydroforming by seamless double-deck stainless steel pipe or have welding seam double-deck stainless steel pipe, and corrugated metal pipe has 6 the unanimous annular ripples of structural dimension and both ends have straight wall end interface, and straight wall end interface includes first interface and second interface, its characterized in that:
the specific dimensions of the metal bellows are defined as:
the size range of the outer diameter of the corrugated pipe is limited to 140 +/-1.25 mm;
the size range of the inner diameter of the corrugated pipe is limited to 108 +/-0.7 mm;
the size range of the total length of the corrugated pipe is limited to 60 +/-2.3 mm;
the size range of the first interface length of the corrugated pipe is limited to 7 +/-0.3 mm;
the size range of the length of the second interface of the corrugated pipe is limited to 7 +/-0.3 mm;
maximum deflection angle of bellows: 3 degrees;
the size of the corrugated pipe wave thickness is limited to 4.9 mm;
the wave pitch of the corrugated pipe is limited to 8.2 mm;
and the stiffness value of the corrugated tube obtained in accordance with the above-defined dimensional range is defined at 10 + -2N/mm.
2. The long-life metal bellows for a high-speed railway coupling according to claim 1, wherein: an inner lining ring is arranged at the straight wall end interface close to the center of the stainless steel pipe blank, a movable flange and a fixed flange are arranged at the straight wall end interface through the inner lining ring, and 8M 4 threaded holes are formed in the fixed flange.
3. A long-life metal bellows for a high-speed railway coupling according to claim 1 or 2, wherein: the double-layer stainless steel pipe blank comprises an inner pipe and an outer pipe, wherein the inner diameter of the outer pipe is 0.5mm larger than the outer diameter of the inner pipe.
4. A long-life metal bellows for a high-speed railway coupling according to claim 3, wherein: and two ports of the inner pipe and the outer pipe are respectively welded to realize bidirectional sealing.
5. The long-life metal bellows for a high-speed railway coupling according to claim 1, wherein: the double-layer stainless steel pipe blank realizes the shaping of the corrugated pipe through a shaping groove, the width of the shaping groove is 5-10mm larger than that of the metal corrugated pipe, and the width of the shaping groove is 145-150 mm.
6. The long-life metal bellows for a high-speed railway coupling according to claim 5, wherein: a bottom pressing plate, a metal corrugated pipe and a top pressing plate are sequentially placed in the shaping groove from bottom to top, the cross section of the bottom pressing plate is in an inverted T shape and comprises a flat pressing plate and a tenon, and the tenon is matched with the central control position of the corrugated pipe.
7. The long-life metal bellows for a high-speed railway coupling according to claim 6, wherein: the hydraulic forming is realized through horizontal bellows former to double-deck stainless steel pipe, horizontal bellows former includes the frame and along the horizontal oil flushing pressure boost hydro-cylinder, bellows forming die and the top that sets gradually of frame, bellows forming die is including installing in proper order preceding diaphragm plate, location contract, middle diaphragm plate, location contract and back diaphragm plate on the double-deck stainless steel pipe, the shape of preceding diaphragm plate, middle diaphragm plate and back diaphragm plate is unanimous, includes inner circle and the outer lane of compriseing two semicircles, and rotatory the installation in the outer lane after the inner circle combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120343405.0U CN216143093U (en) | 2021-02-06 | 2021-02-06 | High-speed railway is high life corrugated metal pipe for shaft coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120343405.0U CN216143093U (en) | 2021-02-06 | 2021-02-06 | High-speed railway is high life corrugated metal pipe for shaft coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216143093U true CN216143093U (en) | 2022-03-29 |
Family
ID=80800587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120343405.0U Active CN216143093U (en) | 2021-02-06 | 2021-02-06 | High-speed railway is high life corrugated metal pipe for shaft coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216143093U (en) |
-
2021
- 2021-02-06 CN CN202120343405.0U patent/CN216143093U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109695623B (en) | Integral lightweight gear shaft and manufacturing process thereof | |
| CN105414239A (en) | Process for rolling inner-corrugated combined surface metal composite tube | |
| CN216143093U (en) | High-speed railway is high life corrugated metal pipe for shaft coupling | |
| CN216691922U (en) | Long-service-life metal corrugated pipe for light rail coupler | |
| CN115780626A (en) | Straight edge expanding die for end part of corrugated pipe for storage tank and forming method | |
| CN203791437U (en) | Internal high pressure forming pipe end face seal plug | |
| CN113028154A (en) | Mechanical bimetal composite pipe with thickened pipe end lining layer and preparation method thereof | |
| CN2888231Y (en) | 45 degree high-pressure reducing elbow connector | |
| CN210739596U (en) | Metal plastic composite pipe with end part provided with reinforced sealing mechanism | |
| CN211502008U (en) | Rectangular corrugated pipe for sintering smoke and air circulating system | |
| CN110976672B (en) | Method and device for realizing connection of plate and pipe by utilizing plastic deformation of plate | |
| CN102975709A (en) | Vehicle brake hose or clutch hose joint with Bundy tube | |
| CN2864303Y (en) | Multi-wave thick wall integrally-formed corrugated-type expansion joint | |
| CN201028221Y (en) | Multi-wave thick-wall omega shaped expansion joint with bearing ring | |
| CN202561295U (en) | Thin-wall stainless steel corrugated pipe | |
| CN207701950U (en) | A kind of Vehicle Hydraulic Retarder metal bellows | |
| CN2888230Y (en) | Reducing elbow connector | |
| CN201589571U (en) | Parallel flow evaporator collecting pipe for vehicle air conditioner | |
| CN101787721A (en) | Preparation method of composite mud discharge pipe for dredge boat | |
| CN112762273B (en) | Special-shaped B-shaped sleeve for repairing oil and gas conveying pipeline bent pipe defects and machining method thereof | |
| CN203585627U (en) | Exhaust pipe sealing gasket | |
| CN220195809U (en) | Starting and ending device for clearing pipeline | |
| CN220354734U (en) | High-strength high-toughness forging piece | |
| CN216226749U (en) | Die for producing four-way pipe | |
| CN110314972B (en) | Punch for hot air pressure forming of metal pipe fitting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |