Connecting pipe, coupler and rail train

Abstract

The present invention provides a connecting pipe, comprising: a composite material pipe, at one end of the composite material pipe there is provided: a first protruding portion, the first protruding portion being located inside the composite material pipe; a metal assembly, the metal assembly comprising: a metal pipe, at one end of the metal pipe there is provided: a second protruding portion, the second protruding portion being located outside the metal pipe, the composite material pipe being sleeved outside the metal pipe, the second protruding portion being located inside the composite material pipe, the second protruding portion being located on the side of the first protruding portion facing the inside of the composite material pipe, the second protruding portion being in contact with the first protruding portion, and the second protruding portion and the first protruding portion being adhesively connected to each other. The connecting pipe provided by the present invention can reduce costs, and effectively reduce the weight of the connecting pipe itself, which is beneficial to the lightweighting, energy conservation and consumption reduction of rail trains, and also improves the corrosion resistance. The present invention also provides a coupler and a rail train.

Description

Technical Field

[0001] The present invention belongs to the field of rail vehicle couplers, and particularly relates to a connecting pipe, a coupler and a rail vehicle. Background Art

[0002] As a key component of a rail vehicle, a coupler is used to connect a locomotive and a vehicle or between vehicles, and transmit the traction force and impact force between trains. A tubular connecting pipe is usually used as a connecting element in a coupler to transmit axial loads during train operation.

[0003] In the prior art, to ensure sufficient strength, metal materials are usually used for the connecting pipe.

[0004] However, when mass-produced, the connecting pipe made of metal materials has a high cost and a large weight, which is not conducive to the lightweight of rail vehicles and energy conservation and consumption reduction. Summary of the Invention

[0005] Aiming at the technical problems that the existing connecting pipe has a high cost and a large weight during mass production, the present invention provides a connecting pipe, which can reduce the cost, effectively reduce the weight of the connecting pipe itself, is conducive to the lightweight of rail vehicles and energy conservation and consumption reduction, and also improves the corrosion resistance. The present invention also provides a coupler and a rail vehicle.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A connecting pipe, comprising:

[0008] A composite material pipe, one end of the composite material pipe is provided with:

[0009] A first protruding portion, the first protruding portion is located inside the composite material pipe;

[0010] A metal assembly, the metal assembly comprises:

[0011] A metal pipe, one end of the metal pipe is provided with:

[0012] A second protruding portion, the second protruding portion is located outside the metal pipe, the composite material pipe is sleeved outside the metal pipe, the second protruding portion is located inside the composite material pipe, the second protruding portion is located on the side of the first protruding portion facing the inside of the composite material pipe, the second protruding portion is in contact with the first protruding portion, and the second protruding portion and the first protruding portion are adhesively connected to each other.

[0013] Further, there are at least two first protruding portions, the first protruding portions are arranged along the circumferential direction of the composite material pipe, and a first gap is formed between two adjacent first protruding portions;

[0014] The number of the second protruding parts is the same as that of the first protruding parts. The second protruding parts can enter the composite material tube through the first gap. A second gap is formed between two of the second protruding parts. The first protruding parts can be sleeved outside the metal tube through the second gap. The second protruding parts are located inside the composite material tube and are in contact with the first protruding parts.

[0015] The first protruding parts are in a toothed structure, the second protruding parts are in a toothed structure, and the widths of the first protruding parts are equal to the widths of the second protruding parts.

[0016] Furthermore, the first protruding parts are arranged uniformly along the circumferential direction of the composite material tube, and the second protruding parts are arranged uniformly along the circumferential direction of the metal tube.

[0017] Furthermore, the composite material tube is further provided with:

[0018] A limiting part, which is in a groove structure. The limiting part is arranged on the side of the first protruding part facing the inside of the composite material tube, and the second protruding parts are located inside the limiting part.

[0019] Furthermore, the metal assembly further includes:

[0020] A flange, which is connected to the other end of the metal tube. The flange is in contact with the composite material tube. The flange, the first protruding parts and the second protruding parts are glued and connected to each other.

[0021] Furthermore, the flange and the metal tube are integrally formed.

[0022] Furthermore, the first protruding parts are arranged at both ends of the composite material tube. There are two metal tubes. The two metal tubes are respectively connected to both ends of the composite material tube through the second protruding parts and the first protruding parts.

[0023] Furthermore, the composite material tube is made of carbon fiber material.

[0024] The present invention also provides a coupler, which includes the connecting tube according to any one of the present invention.

[0025] The present invention also provides a rail train, which includes the coupler according to the present invention.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. The connecting pipe provided by the present invention includes a composite material pipe and a metal component. The metal component includes a metal pipe, and the composite material pipe is connected to the metal pipe. The connecting pipe provided by the present invention uses the composite material pipe to at least partially replace the metal pipe in the prior art. Compared with the existing connecting pipe, the connecting pipe provided by the present invention reduces the cost, has higher strength, enhances the corrosion resistance, and can effectively reduce its own weight, which is beneficial to the lightweight and energy conservation and consumption reduction of rail vehicles.

[0028] 2. For the connecting pipe provided by the present invention, one end of the composite material pipe is provided with a first protruding portion, and the first protruding portion is located inside the composite material pipe. One end of the metal pipe is provided with a second protruding portion, and the second protruding portion is located outside the metal pipe. The composite material pipe is sleeved outside the metal pipe, the second protruding portion is located inside the composite material pipe, the second protruding portion is located on the side of the first protruding portion facing the inside of the composite material pipe, the second protruding portion is in contact with the first protruding portion, and the second protruding portion and the first protruding portion are adhesively connected to each other. For the connecting pipe provided by the present invention, the composite material pipe and the metal pipe are connected to each other by the contact of the first protruding portion and the second protruding portion and are adhesively connected at the same time. While the composite material pipe and the metal pipe are connected to each other, the first protruding portion forms an axial limit constraint on the second protruding portion, so that the connecting pipe can be applied to axial pulling and pressing working conditions, thereby improving the connection reliability of the connecting pipe provided by the present invention. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of the connecting pipe provided in this embodiment;

[0030] Figure 2 is Figure 1 a schematic cross-sectional structural diagram of the connecting pipe in

[0031] Figure 3 is Figure 1 a schematic structural diagram of the composite material pipe in

[0032] Figure 4 is Figure 1 a schematic structural diagram of the metal component in

[0033] Specific descriptions of the reference numerals in the drawings are as follows:

[0034] 1. Composite material pipe; 11. First protruding portion; 12. First gap; 13. Limiting portion;

[0035] 2. Metal component; 21. Metal pipe; 211. Second protruding portion; 212. Second gap; 22. Flange. Detailed Embodiments

[0036] The technical solutions in the specific embodiments of the present invention will be described in detail and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only partial specific implementations of the overall technical solution of the present invention, rather than all implementations. Based on the overall concept of the present invention, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0038] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Aiming at the technical problems of the existing connecting pipe with high cost and large weight, the present invention provides a connecting pipe, which can reduce the cost, effectively reduce the weight of the connecting pipe itself, is beneficial to the lightweight and energy saving and consumption reduction of the rail train, and also improves the corrosion resistance. The technical solutions of the present invention will be specifically described below with reference to specific embodiments.

[0041] This embodiment provides a connecting pipe, including:

[0042] A composite material pipe 1, one end of the composite material pipe 1 is provided with:

[0043] A first protrusion 11, the first protrusion 11 is located inside the composite material pipe 1;

[0044] A metal component 2, the metal component 2 includes:

[0045] A metal pipe 21, one end of the metal pipe 21 is provided with:

[0046] The second protruding portion 211 is located outside the metal tube 21. The composite material tube 1 is sleeved on the outer side of the metal tube 21. The second protruding portion 211 is located inside the composite material tube 1. The second protruding portion 211 is located on the side of the first protruding portion 11 facing the inside of the composite material tube 1. The second protruding portion 211 is in contact with the first protruding portion 11, and the second protruding portion 211 and the first protruding portion 11 are adhesively connected to each other.

[0047] The connecting pipe provided in this embodiment includes a composite material tube 1 and a metal component 2. The metal component 2 includes a metal tube 21, and the composite material tube 1 and the metal tube 21 are connected. The connecting pipe provided in this embodiment uses the composite material tube 1 to at least partially replace the metal tube in the prior art. Compared with the existing connecting pipe, the connecting pipe provided in this embodiment reduces the cost, has higher strength, enhances the corrosion resistance, and can effectively reduce its own weight, which is beneficial to the lightweight and energy saving of the rail vehicle.

[0048] Furthermore, for the connecting pipe provided in this embodiment, one end of the composite material tube 1 is provided with a first protruding portion 11, and the first protruding portion 11 is located inside the composite material tube 1. One end of the metal tube 21 is provided with a second protruding portion 211, and the second protruding portion 211 is located outside the metal tube 21. The composite material tube 1 is sleeved on the outer side of the metal tube 21. The second protruding portion 211 is located inside the composite material tube 1. The second protruding portion 211 is located on the side of the first protruding portion 11 facing the inside of the composite material tube 1. The second protruding portion 211 is in contact with the first protruding portion 11, and the second protruding portion 211 and the first protruding portion 11 are adhesively connected to each other. For the connecting pipe provided in this embodiment, the composite material tube 1 and the metal tube 21 are in contact and connected to each other through the first protruding portion 11 and the second protruding portion 211 and are adhesively connected at the same time. While the composite material tube 1 and the metal tube 21 are connected to each other, the first protruding portion 11 forms an axial limit constraint on the second protruding portion 211, so that the connecting pipe can be applied to axial tension and compression working conditions, thereby improving the connection reliability of the connecting pipe provided in this embodiment.

[0049] Specifically, referring to Att Figure 1 to Att Figure 4 , the connecting pipe provided in this embodiment includes a composite material tube 1 and a metal component 2, and the composite material tube 1 and the metal component 2 are connected.

[0050] More specifically, the composite material tube 1 is a tubular structure with a hollow interior. The composite material tube 1 at least partially replaces the metal tube in the prior art. Compared with the existing connecting tube, the connecting tube provided in this embodiment reduces costs, has higher strength, enhanced corrosion resistance, and can effectively reduce its own weight, which is beneficial to the lightweight and energy conservation of the rail vehicle. Preferably, the composite material tube 1 is made of carbon fiber material. The composite material tube 1 is connected to the metal component 2. Specifically, a first protrusion 11 is provided at one end of the composite material tube 1. The first protrusion 11 is located inside the composite material tube 1, and the composite material tube 1 is connected to the metal component 2 through the first protrusion 11. More specifically, the first protrusion 11 is a toothed structure, and the first protrusion 11 is provided on the inner wall of one end of the composite material tube 1. Preferably, there are at least two first protrusions 11, and the first protrusions 11 are arranged along the circumferential direction of the composite material tube 1, especially evenly arranged along the circumferential direction of the composite material tube 1. A first gap 12 is formed between two adjacent first protrusions 11.

[0051] To further enhance the connection reliability between the composite material tube 1 and the metal component 2, the composite material tube 1 is also provided with a limiting portion 13. Specifically, referring to the appendix Figure 2 , the limiting portion 13 is preferably a groove structure. The limiting portion 13 is provided on the side of the first protrusion 11 facing the inside of the composite material tube 1. When connected to the metal component 2, the limiting portion 13 plays a further limiting role on the metal component 2, thereby enhancing the connection reliability.

[0052] The metal component 2 includes a metal tube 21 and a flange 22. One end of the metal tube 21 is connected to the composite material tube 1, and the other end of the metal tube 21 is connected to the flange 22.

[0053] To be connected to the composite material tube 1, a second protruding portion 211 is provided at one end of the metal tube 21. Preferably, the second protruding portion 211 is a toothed structure, and the width of the first protruding portion 11 is equal to the width of the second protruding portion 211, so that the contact area between the first protruding portion 11 and the second protruding portion 211 is the largest, thereby increasing the connection strength. The second protruding portion 211 is provided on the outside of the metal tube 21. The composite material tube 1 is sleeved on the outside of the metal tube 21, and the second protruding portion 211 is located inside the composite material tube 1. During connection, the second protruding portion 211 is located on the side of the first protruding portion 11 facing the inside of the composite material tube 1, so that the second protruding portion 211 is in contact with the first protruding portion 11, and at the same time, the second protruding portion 211 and the first protruding portion 11 are glued and connected to each other. While the composite material tube 1 and the metal tube 21 are connected to each other, the first protruding portion 11 forms an axial limit constraint on the second protruding portion 211, so that the connecting tube can be applied to axial tension and compression conditions, thereby improving the connection reliability of the connecting tube provided in this embodiment. As a further preference, during connection, the second protruding portion 211 is located inside the limiting portion 13 of the composite material tube 1. The limiting portion 13 further acts on the second protruding portion 211 and thus on the metal tube 21 to axially limit it, further improving the connection reliability.

[0054] More specifically, the number of the second protruding portions 211 is the same as that of the first protruding portions 11, and the second protruding portions 211 can enter the composite material tube 1 through the first gap 12. A second gap 212 is formed between the two second protruding portions 211. The first protruding portion 11 can be sleeved on the outside of the metal tube 21 through the second gap 212. The second protruding portions 211 are located inside the composite material tube 1, and the second protruding portions 211 are in contact with the first protruding portions 11. Preferably, the second protruding portions 211 are evenly arranged along the circumferential direction of the metal tube 21. When assembling the connection between the composite material tube 1 and the metal tube 21, align the first protruding portion 11 of the composite material tube 1 with the second gap 212 of the metal tube 21, then align the second protruding portion 211 of the metal tube 21 with the first gap 12 of the metal tube 21, and then insert the composite material tube 1 and the metal tube 21. The composite material tube 1 is sleeved on the outside of the metal tube 21. When the second protruding portion 211 is located inside the limiting portion 13, rotate the composite material tube 1 and the metal tube 21 so that the first protruding portion 11 and the second protruding portion 211 are in contact, and then glue and connect the composite material tube 1 and the metal tube 21. The metal assembly 2 further includes a flange 22, and the flange 22 is connected to the other end of the metal tube 21. Refer to the attached Figure 2, specifically, the flange 22 is connected to one end of the metal pipe 21 away from the second protrusion 211. The composite material pipe 1 is sleeved on the outer side of the metal pipe 21, and one end face of the composite material pipe 1 is in contact with the flange 22. The flange 22, the first protrusion 11, and the second protrusion 211 are glued and connected to each other. The flange 22 plays a role in further axially limiting the composite material pipe 1, thereby improving the tensile and compressive strengths of the connecting pipe provided in this embodiment.

[0055] Preferably, the flange 22 and the metal pipe 21 are integrally formed.

[0056] More preferably, the first protrusions 11 are provided at both ends of the composite material pipe 1. There are two metal pipes 21, and the two metal pipes 21 are respectively connected to both ends of the composite material pipe 1 through the second protrusions 211 and the first protrusions 11.

[0057] This embodiment also provides a coupler, which includes the connecting pipe of this embodiment.

[0058] This embodiment also provides a rail train, which includes the coupler of this embodiment.

Claims

1. A connecting pipe, which is used in a coupler, is characterized in that Comprising: A composite material tube, at one end of which is provided with: A first protrusion, which is located inside the composite material tube; there are at least two first protrusions, the first protrusions are in a toothed structure, the first protrusions are evenly arranged along the circumferential direction of the composite material tube, and a first gap is formed between two adjacent first protrusions; A metal component, which comprises: A metal tube, at one end of which is provided with: A second protrusion, the number of the second protrusions is the same as that of the first protrusions, the second protrusions are in a toothed structure, the second protrusions are evenly arranged along the circumferential direction of the metal tube, the width of the first protrusion is equal to the width of the second protrusion, a second gap is formed between two second protrusions, the second protrusions are located outside the metal tube, the composite material tube is sleeved outside the metal tube, the second protrusions can enter the composite material tube through the first gap, the second protrusions are located inside the composite material tube, the second protrusions are located on one side of the first protrusions facing the inside of the composite material tube, the first protrusions can be sleeved outside the metal tube through the second gap, the second protrusions are in contact with the first protrusions, and the second protrusions and the first protrusions are adhesively connected to each other.

2. The connecting pipe according to claim 1, wherein, The composite material tube is further provided with: A limiting part, which is in a groove structure, the limiting part is arranged on one side of the first protrusion facing the inside of the composite material tube, and the second protrusions are located in the limiting part.

3. The connecting pipe according to claim 1, wherein The metal component further comprises: A flange, which is connected to the other end of the metal tube, the flange is in contact with the composite material tube, and the flange, the first protrusions and the second protrusions are adhesively connected to each other.

4. The connecting pipe according to claim 3, characterized in that, The flange and the metal tube are integrally formed.

5. The connecting pipe according to any one of claims 1 to 4, characterized in that First protrusions are arranged at both ends of the composite material tube, there are two metal tubes, and the two metal tubes are respectively connected to both ends of the composite material tube through the second protrusions and the first protrusions.

6. The connecting pipe according to any one of claims 1 to 4, characterized in that, The composite material tube is made of carbon fiber material.

7. A coupler, characterized in that, Including the connecting tube according to any one of claims 1 to 6.

8. An orbital train, characterized in that, Including the coupler according to claim 7.

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