CN216269265U

CN216269265U - Pipe structure, bogie and rail vehicle

Info

Publication number: CN216269265U
Application number: CN202122339947.3U
Authority: CN
Inventors: 高玉龙; 陈东方; 王石; 张义; 崔健; 李雨蔚
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-04-12
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses a pipe structure, a bogie and a rail vehicle, wherein the inner layer of the pipe structure is a non-metal lining pipe with better air tightness, which can meet the air tightness requirement of a main cavity body of the pipe structure, the outer layer of the pipe structure is a composite material pipe with lighter weight, which greatly reduces the overall weight of the pipe structure, in addition, an installation structure for installing an external component is arranged on a metal block positioned between the composite material pipe and the non-metal lining pipe, the installation structure is independent of the non-metal lining pipe, which can solve the connection problem of a cross beam and other parts, meet the strength requirement, can not influence the air tightness of the pipe structure, and improve the forming quality and efficiency of the cross beam.

Description

Pipe structure, bogie and rail vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to a pipe structure, a bogie and a rail vehicle.

Background

The bogie crossbeam is as the main load-bearing part of bogies such as subway, EMUs, high-speed railway, and a large amount of bearing members have been installed to the crossbeam, if: parts such as a transverse shock absorber, a traction pull rod, a brake clamp, a traction motor, a transverse stop and the like, and meanwhile, part of the cross beam can also be used as an additional air chamber of the air spring to reduce the damping of the air spring.

That is, the truck beam should generally have both sufficient strength to meet load bearing requirements and hollow sealing properties to meet the requirement of creating additional air chambers. Currently, bogie beams typically use hollow metal tubes, the interior of which serves as a gas passage, to meet load bearing requirements by judiciously selecting the wall thickness of the metal tube.

However, the metal beam has the problems of heavy structure weight, corrosion of metal materials and the like, and meanwhile, the welding process is adopted for the beam forming in large quantity, and the forming process is complex.

Therefore, how to overcome at least one of the above-mentioned drawbacks is a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

One of the objects of the present invention is to provide a tube structure having high structural strength and good sealing of internal gas channels. It is a further object of the present invention to provide a bogie and a rail vehicle comprising the above-described tube structure.

The utility model provides a pipe structure, which comprises a pipe body, wherein the pipe body comprises a non-metal lining pipe and a composite material pipe, the composite material pipe is sleeved on the outer wall of the non-metal lining pipe, the inner cavity of the non-metal lining pipe comprises a main cavity body forming an airflow channel, and the pipe structure is also provided with a pipe connector used for communicating the main cavity body with an external pipeline; and a metal block is arranged at a local position between the composite material pipe and the lining pipe.

The inner layer of the pipe structure is the non-metal lining pipe with good air tightness, the air tightness requirement of a main cavity body of the pipe structure can be met, the outer layer of the pipe structure is the composite material pipe with light weight, the overall weight of the pipe structure is greatly reduced, in addition, the mounting structure for mounting an external component is arranged on the metal block between the composite material pipe and the non-metal lining pipe, the mounting structure is independent of the non-metal lining pipe, the connection problem of the cross beam and other parts can be solved, the strength requirement can be met, the air tightness of the pipe structure cannot be influenced, and the forming quality and the forming efficiency of the cross beam are improved.

Optionally, the peripheral wall of the non-metal lining pipe is provided with a plurality of convex ribs, the non-metal lining pipe is in sealing contact with the composite material pipe through the convex ribs, and the metal block is installed between the adjacent convex ribs.

Optionally, the ribs include a first rib, and the first rib extends axially along the non-metal liner pipe;

or/and the convex ribs comprise second convex ribs which extend in the axial direction perpendicular to the nonmetal lining pipe.

Optionally, the composite pipe further comprises metal seat bodies, wherein the metal seat bodies are located at two end portions of the composite pipe, the two metal seat bodies and the composite pipe form a sealed pipe section, and the non-metal lining pipe is located in the sealed pipe section; and the metal seat body is attached to and mounted at two end parts of the non-metal lining pipe.

Optionally, the metal seat body and the composite material pipe are provided with coaxial bolt through holes, the bolt penetrates through the bolt through hole to be connected with the nut

Optionally, the connecting device further comprises a connecting seat, wherein the connecting seat is provided with a shaft section extending into the bolt through hole of the composite material pipe, and the shaft section is in sealing fit with the bolt through hole of the composite material pipe.

Optionally, the pipe connector is fixed to the nonmetal liner pipe, and a first through hole is formed in the position, corresponding to the pipe connector, of the composite material pipe;

or/and a threaded hole is formed in the metal block, and a second through hole is formed in the position, corresponding to the threaded hole, of the composite material pipe;

or/and the peripheral wall of the non-metal lining pipe is partially provided with a concave part with an opening facing the composite material pipe, and the metal block is fixed on the concave part in a matching way.

Optionally, the non-metal lined pipe includes one or more of PE, XPE, PA, PC, PVC, or high molecular weight polyethylene;

or/and the composite tube comprises a resin-based carbon fiber composite.

In addition, the utility model also provides a bogie which comprises two longitudinal beams and a cross beam, wherein the two ends of the cross beam are fixedly connected with the two longitudinal beams, the cross beam is in any one of the tube structures, the main cavity forms an additional air chamber of the air spring, and the cross beam is provided with the metal blocks at the positions corresponding to the transverse shock absorber seat, the traction pull rod seat, the transverse stop seat and the cross beam auxiliary beam.

Furthermore, the utility model provides a rail vehicle comprising a pipe structure according to any one of the preceding claims; or/and comprises the bogie.

The railway vehicle and the bogie in the present invention include the above-described tube structure, and therefore both also have the above-described technical effects of the tube structure.

Drawings

FIG. 1 is a schematic diagram of a tube structure according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a cross-sectional view of C _ C of FIG. 3;

FIG. 5 is a schematic structural view of a tube structure with a lateral shock absorber mount installed in accordance with an embodiment of the present invention;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a cross-sectional view of FIG. 5;

FIG. 8 is a schematic view of a non-metallic liner according to an embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view A1-A1 of FIG. 8;

FIG. 10 is a schematic view of a non-metallic liner according to another embodiment of the present invention;

FIG. 11 is a schematic view of A2-A2 of FIG. 10;

FIG. 12 is a schematic partial cross-sectional view of B2-B2 of FIG. 10.

In fig. 1 to 12, the one-to-one correspondence between each reference numeral and the component name is as follows:

the shock absorber comprises a composite material pipe 1, a first through hole 11, a non-metal lining 2, a main cavity 21, a first convex rib 22, a second convex rib 23, a metal seat 3, a bolt 4, a nut 5, a connecting seat 6, a transverse shock absorber seat 7, a pipe connector 8 and a metal block 9.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. The technical solutions and effects are presented herein in terms of the use of a tube structure as a bogie beam.

Referring to fig. 1 to 12, fig. 1 is a schematic structural diagram of a tube structure according to an embodiment of the present invention; FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1; FIG. 3 is a cross-sectional view of FIG. B-B; FIG. 4 is a cross-sectional view of C _ C of FIG. 3; FIG. 5 is a schematic structural view of a tube structure with a lateral shock absorber mount installed in accordance with an embodiment of the present invention; FIG. 6 is a top view of FIG. 5; FIG. 7 is a cross-sectional view of FIG. 5; FIG. 8 is a schematic view of a non-metallic liner according to an embodiment of the present invention; FIG. 9 is a schematic cross-sectional view A1-A1 of FIG. 8; FIG. 10 is a schematic view of a non-metallic liner according to another embodiment of the present invention; FIG. 11 is a schematic view of A2-A2 of FIG. 10; FIG. 12 is a schematic partial cross-sectional view of B2-B2 of FIG. 10.

The utility model provides a pipe structure which comprises a pipe body, wherein the pipe body comprises a nonmetal lining pipe 2 and a composite material pipe 1.

The material of the nonmetal inner lining pipe 2 can be better and the better material of gas tightness for the corrosion resistance, for example PE, XPE, PA, PC, PVC or high molecular weight polyethylene material inside lining, avoid the inside lining to corrode, the maximize utilizes the inner space of combined material pipe 1. The composite tube 1 is formed from a composite material, which may be a fibrous material, such as a resin-based carbon fibre composite. Of course, the materials of the non-metal lined pipe 2 and the composite pipe 1 are not limited to those described herein, and may be other materials.

The composite material pipe 1 is sleeved on the outer wall of the nonmetal lining pipe 2.

The inner cavity of the non-metal lined tube 2 in the present invention comprises a main cavity 21 forming an air flow channel. The pipe structure also has a pipe connector 8 for communicating the main cavity 21 with an external pipeline; the external piping may communicate with the main chamber 21 through a pipe joint to supply air to the main chamber 21. A metal block 9 is installed between the composite material pipe 1 and the nonmetal inner lining pipe 2 at a local position, so that a structure matched with an external member is arranged on the metal block 9, and the external member is installed on the metal block 9. The shape and position of the metal block 9 can be determined according to actual needs, and fig. 12 shows an embodiment in which the metal block 9 is semicircular, but the metal block 9 can be square or in other forms.

According to the utility model, the inner layer of the tube structure is the non-metal lining tube 2 with better air tightness, the air tightness requirement of the main cavity 21 of the tube structure can be met, the outer layer of the tube structure is the composite material tube 1 with lighter weight, the overall weight of the tube structure is greatly reduced, in addition, the mounting structure for mounting external components is arranged on the metal block 9 between the composite material tube 1 and the non-metal lining tube 2, the mounting structure is arranged independently of the non-metal lining tube 2, the connection problem of the cross beam and other parts can be solved, the strength requirement can be met, the air tightness of the tube structure cannot be influenced, and the forming quality and the forming efficiency of the cross beam are improved.

In one embodiment, the outer peripheral wall of the non-metal inner liner tube 2 has a plurality of ribs, and the non-metal inner liner tube 2 is in sealing contact with the composite material tube 1 through the ribs, and the ribs can play a role in supporting the composite material tube 1. The metal block 9 can be arranged between the adjacent convex ribs, and the adjacent convex ribs can also play a role in positioning and fixing the metal block 9, so that the metal block 9 can be conveniently arranged. The height of the convex rib is about 3 mm-8 mm, and the wall thickness of the nonmetal lining pipe 2 is about 5 mm.

In one embodiment, the ribs include a first rib 22 and a second rib 23, wherein the first rib 22 extends axially along the non-metal lined pipe 2 and the second rib 22 extends in a direction perpendicular to the axial direction of the non-metal lined pipe 2. The first rib 22 and the second rib 23 may be provided on the outer surface of the non-metal liner tube 2 at the same time, or alternatively. Referring to fig. 8 and 9, fig. 8 and 9 show an embodiment in which the non-metal liner pipe 2 is provided with only the first ribs 22, and fig. 10 to 12 show an embodiment in which the non-metal liner pipe 2 is provided with both the first ribs 22 and the second ribs 23.

In a specific embodiment, the tube structure further comprises metal seat bodies 3, the metal seat bodies 3 are located at two end portions of the composite material tube, the two metal seat bodies 3 and the composite material tube 1 form a sealed tube section, and the non-metal lining tube 2 is located in the sealed tube section; the metal base 3 has a mounting structure adapted to the connected member. The metal base 3 can be connected with other components in a matching way, so that the pipe structure can be assembled in a vehicle body or other application environments. For example, when the pipe structure is used as a cross member, the pipe structure can be connected to the side members of the bogie on the respective sides by the metal base bodies 3 on both sides.

The metal base 3 is attached to the two ends of the nonmetal liner pipe 2, so that the metal base 3 can be used as the gas pressure supports at the two ends of the nonmetal liner pipe 2.

Specifically, the mounting structure includes a bolt 4 and a nut 5 that is fitted and fastened to the bolt 4, and the metal base body 3 and the composite pipe 1 have coaxial bolt passing holes through which the bolt connects the nut 5.

The bolt connection structure in the embodiment is simple, and the connection is reliable.

In a particular embodiment, the tube structure may further comprise a coupling socket 6, the coupling socket 6 having a shaft section 61 extending into the bolt through hole of the composite tube 1, the shaft section 61 sealingly engaging the bolt through hole of the composite tube 1.

In this embodiment, the strength of the connection can be improved by adding the connection holder 6.

In the above embodiments, the pipe joint 8 is fixed to the non-metal lining pipe 2, and the composite pipe 1 is provided with the first through hole at the position corresponding to the pipe joint 8. The external pipe passes through the first through hole 11 to connect the connectors 8.

In one example, a threaded hole is formed in the metal block 9, and a second through hole is formed in the composite tube 1 at a position corresponding to the threaded hole. The screw passes through the second through hole and is fixedly connected in the threaded hole of the metal block 9. Fig. 5 to 7 show that the transverse damper base 7 is mounted to the metal block 9 by means of screws.

In each embodiment, the peripheral wall of the non-metal lining tube 2 is partially provided with a concave part with an opening facing the composite material tube 1, and the metal block 9 is matched and fixed in the concave part.

The outer profile of the cross section of the pipe structure in the application can be square, and a mounting plane can be provided for a component mounted on the pipe structure, so that the component can be conveniently mounted and fixed. Of course the cross-sectional outer contour of the tube structure may also have other shapes.

In addition, the utility model also provides a bogie which comprises two longitudinal beams and a cross beam, wherein the two ends of the cross beam are fixedly connected with the two longitudinal beams, the cross beam is in the pipe structure of any embodiment, the main cavity body 21 forms an additional air chamber of the air spring, and the cross beam is provided with mounting structures at positions corresponding to the transverse shock absorber seat, the traction pull rod seat, the transverse stop seat and the cross beam auxiliary beam.

For example, a beam auxiliary beam is connected between two beams to form an H-shaped beam assembly. The installation positions and structures of the transverse shock absorber seats, the traction pull rod seats, the transverse stop seats and the like are not specifically described herein.

The structure of the pipe can overcome the problem that the metal beam structure in the prior art is heavy, so that the advantage of reducing the whole weight of the bogie is achieved, and the energy consumption and the maintenance cost of a vehicle are reduced. The cross beam is of a square structure, and a non-metal lining structure is arranged in the cross beam, so that the internal space of the composite material pipe 1 is utilized to the maximum extent, the air tightness problem of the cross beam is solved, the function of the composite material cross beam as an additional air chamber of the bogie can be realized, and the volume of the air chamber is increased; the external portion of the nonmetal inner lining pipe 2 adopts a strip-shaped rib structure, and strength support is provided for the nonmetal inner lining.

In sum, compared with the traditional metal beam, the beam has the advantages that the structural weight is effectively reduced; the corrosion problem of the additional air chamber is avoided, the air tightness problem of the composite material beam without the lining is solved, the volume of the air chamber is improved, and the function of the additional air chamber of the composite material beam can be realized.

In addition, the utility model also provides a rail vehicle, which comprises the pipe structure in any embodiment; or/and the bogie.

The present invention provides a tube structure, a bogie and a rail vehicle. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A pipe structure comprises a pipe body and is characterized in that the pipe body comprises a non-metal lining pipe and a composite material pipe, the composite material pipe is sleeved on the outer wall of the non-metal lining pipe, the inner cavity of the non-metal lining pipe comprises a main cavity body forming an airflow channel, and the pipe structure is further provided with a pipe connector used for communicating the main cavity body with an external pipeline; and a metal block is arranged at a local position between the composite material pipe and the lining pipe.

2. The tube structure of claim 1, wherein the outer peripheral wall of the non-metallic inner liner tube has a plurality of ribs by which the non-metallic inner liner tube is in sealing contact with the composite tube, and the metal blocks are mounted between adjacent ribs.

3. The tubular structure of claim 2, wherein the ribs comprise first ribs extending axially along the non-metal lined tubular;

4. The pipe structure of claim 1, further comprising metal seat bodies positioned at both ends of the composite pipe, wherein the metal seat bodies and the composite pipe form a sealed pipe section, and wherein the non-metal liner pipe is positioned at the sealed pipe section; and the metal seat body is attached to and mounted at two end parts of the non-metal lining pipe.

5. The pipe structure of claim 4, comprising a bolt and a nut cooperatively fastened with the bolt, the metal seat and the composite pipe having coaxial bolt through holes, the bolt passing through the bolt through hole and connecting with the nut.

6. A tubular structure according to claim 5 further comprising a coupling socket having a shaft section extending into the bolt through bore of the composite tube, the shaft section being in sealing engagement with the bolt through bore of the composite tube.

7. A tubular structure according to any one of claims 1 to 6, characterized in that the tubular connector is fixed to the non-metallic lined tube, and the composite tube is provided with a first through hole in a position corresponding to the tubular connector;

8. A pipe structure according to any of claims 1 to 6, wherein said non-metal lined pipe comprises one or more of PE, XPE, PA, PC, PVC or high molecular weight polyethylene;

or/and the composite tube comprises a resin-based carbon fiber composite.

9. A bogie comprising two longitudinal beams and a cross beam fixedly connected with the two longitudinal beams at two ends, wherein the cross beam is the tube structure of any one of claims 1 to 8, the main cavity forms an additional air chamber of the air spring, and the cross beam is provided with the metal blocks at positions corresponding to a transverse damper seat, a traction pull rod seat, a transverse stop seat and a cross beam auxiliary beam.

10. A rail vehicle, characterized in that it comprises a pipe structure according to any one of claims 1 to 8; or/and comprising a bogie as claimed in claim 9.