Bogie and tramcar

Abstract

The invention discloses a bogie and a tramcar, and relates to the technical field of vehicle engineering. The bogie includes: a frame including two longitudinal beams; the air spring is arranged above the longitudinal beam and comprises an air bag and an auxiliary spring arranged in the middle of the upper portion of the air bag. At the moment, the air bag with the large horizontal section of the air spring is arranged below, the auxiliary spring with the small horizontal section is arranged above, a positive cone-shaped structure with the bottom expanding and the upper portion narrowing is formed, the lateral space of the auxiliary spring can be suitable for installation of a low-floor vehicle body, the space structure problem is solved, and the air spring is small in rigidity and can not be damaged when the vehicle runs and accelerates. And the vehicle stability is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle engineering, in particular to a bogie and a tram. BACKGROUND

[0002] At present, in some trams, due to the low vehicle floor and the compact bogie structure of the tram, the secondary suspension generally adopts a spiral steel spring or a rubber spring made of rubber material. The stiffness of these two types of suspension components is relatively large, generally about 1 kN / mm, which leads to the problem of poor vehicle stability of the tram during operation when the speed exceeds a certain value, thereby limiting the range of the operating speed of the tram.

[0003] Therefore, how to improve the operating speed while ensuring the stability is a technical problem to be solved by those skilled in the art at present. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a bogie and a tram which can improve the operating speed while ensuring the stability.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions.

[0006] In one aspect, the present application provides a bogie, comprising: a frame comprising two longitudinal beams; an air spring arranged above the longitudinal beams, comprising an air bag and an auxiliary spring arranged at the middle part above the air bag.

[0007] In an exemplary embodiment, a boss is further arranged above the longitudinal beams, wherein the boss is provided with a boss air chamber; the air bag is arranged above the boss and is in communication with the boss air chamber.

[0008] In an exemplary embodiment, the bottom part of the air bag is provided with a positioning column, and the positioning column is in plug-in cooperation with the boss.

[0009] In an exemplary embodiment, a sleeve is further arranged in the boss air chamber, and both ends of the sleeve are supported on a boss top plate and a boss bottom plate of the boss; the sleeve is in communication with a positioning hole on the boss top plate; the positioning column is in plug-in cooperation with the positioning hole and extends into the corresponding sleeve.

[0010] In an exemplary embodiment, at least one of the positioning columns is a first positioning column, a gas channel is arranged through the first positioning column, the first positioning column is in plug-in cooperation with the boss, and the gas channel is in communication with the air bag and the boss air chamber.

[0011] In an exemplary embodiment, the boss air chamber further comprises a first sleeve, two ends of the first sleeve are supported on the boss top plate and the boss bottom plate respectively, the first positioning column is inserted into the first sleeve, and the air passage communicates with the first sleeve; the first sleeve is provided with a ventilation hole penetrating through the first sleeve to communicate the space outside and inside the first sleeve, and the ventilation hole is located below the first positioning column.

[0012] In an exemplary embodiment, the air tank communicating with the boss air chamber is further included; the air tank is arranged between the two longitudinal beams, and the ventilation hole faces the air tank; on the same air bag, the plurality of positioning columns are arranged in sequence in a direction away from the air tank, and the positioning column closest to the air tank is the first positioning column.

[0013] In an exemplary embodiment, the air tank communicating with the boss air chamber is further included, and the two air tanks are arranged between the two longitudinal beams and arranged in sequence in the transverse direction, and are respectively connected to the boss air chambers on the longitudinal beams close to the air tanks by pipelines.

[0014] In an exemplary embodiment, the boss is provided with a boss through hole on the inner side in the transverse direction, and the pipeline is connected to the boss through hole; the longitudinal beam comprises two side beams, two connecting beams and a middle beam; the middle beam is located between the two side beams in the longitudinal direction, the middle beam is located on the outer side of the two side beams in the transverse direction, two ends of the middle beam are connected to the two side beams by the two connecting beams respectively, the boss is arranged on the middle beam, and the middle beam and the two connecting beams form an avoiding space on the inner side in the transverse direction, and the pipeline connects the boss through the avoiding space.

[0015] Another aspect of the present application provides a tramcar, comprising the bogie as above, and further comprising a car body, the bottom of the car body extends downward between the two longitudinal beams, and the end plates of the bottom of the car body in the transverse direction are gradually inclined outward from bottom to top respectively.

[0016] The bogie provided by the present application comprises a frame comprising two longitudinal beams, and an air spring arranged above the longitudinal beams, comprising an air bag and an auxiliary spring arranged at the middle part above the air bag.

[0017] At this time, the air bag with a large horizontal cross section is at the bottom, and the auxiliary spring with a small horizontal cross section is at the top, forming a right conical structure with an expanded bottom and a narrowed top, the side space of the auxiliary spring can be used for the installation of a low-floor car body, solving the space structure problem, and the stiffness of the air spring is small, which can ensure the stability of the vehicle when the vehicle is accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only aim at the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without any creative effort based on the provided drawings.

[0019] Figure 1 The assembly schematic view of the bogie and the car body in the specific embodiment of the bogie provided by the present application;

[0020] Figure 2 The axonometric view of the bogie in the specific embodiment of the bogie provided by the present application;

[0021] Figure 3 The assembly view of the air spring, the car body and the boss in the specific embodiment of the bogie provided by the present application;

[0022] Figure 4 The axonometric view of the air spring in the specific embodiment of the bogie provided by the present application;

[0023] Figure 5 The axonometric view of the boss in the specific embodiment of the bogie provided by the present application;

[0024] Figure 6 The partial sectional view of the boss in the specific embodiment of the bogie provided by the present application;

[0025] Figure 7 The first partial axonometric view of the bogie in the specific embodiment of the bogie provided by the present application;

[0026] Figure 8 The second partial axonometric view of the bogie in the specific embodiment of the bogie provided by the present application;

[0027] Figure 9 The third partial axonometric view of the bogie in the specific embodiment of the bogie provided by the present application.

[0028] Reference signs:

[0029] Air spring 1, auxiliary spring 11, air bag 12, cover plate assembly 13, positioning column 14, first positioning column 141, air passage 1411, second positioning column 142, connecting column 15;

[0030] Boss 2, boss air chamber 21, positioning hole 22, first positioning hole 221, second positioning hole 222, sleeve 23, first sleeve 231, air passage 2311, second sleeve 232, boss top plate 24, flash structure 241, boss bottom plate 25, boss through hole 26, boss side plate 27, C-shaped plate 271, first flat plate 272;

[0031] Air tank 3;

[0032] Frame 4, longitudinal beam 41, side beam 411, middle beam 412, connecting beam 413, avoiding space 414, cross beam 42, gear box 43, motor 44, traction rod 45, axle bridge 46, supporting plate 47, mounting bolt 48;

[0033] Vehicle body 5;

[0034] Pipeline 6, middle section 61, upper section 62, lower section 63. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] The core of the present application is to provide a bogie and a tramcar, which can improve the running speed while ensuring stability.

[0037] The specific embodiment of the bogie provided by the present application is applied to a tramcar; in other embodiments, it can also be applied to other vehicles. Please refer to Figures 1 to 9 The bogie comprises a frame 4 and an air spring 1.

[0038] The frame 4 comprises two longitudinal beams 41 and a cross beam 42 connected between the two longitudinal beams 41. The air spring 1 is arranged above the longitudinal beam 41 as a secondary suspension load-bearing component.

[0039] The air spring 1 comprises an air bag 12 and an auxiliary spring 11 arranged above the middle part of the air bag 12. That is, compared with the application mode of the air bag 12 above in the conventional air spring 1, the air bag 12 below and the auxiliary spring 11 above are adopted in the present application.

[0040] At this time, the air bag 12 with a large horizontal cross section is below, and the auxiliary spring 11 with a small horizontal cross section is above, forming a right conical structure with an expanded bottom and a narrowed upper part. The side space of the auxiliary spring 11 can be suitable for the installation of a low-floor vehicle body 5, solving the space structure problem, and the stiffness of the air spring 1 is smaller, for example, the stiffness of the air spring 1 can be 0.3 to 0.5 kN / mm, which can ensure the stability of the vehicle when the vehicle runs at a high speed.

[0041] In some embodiments, in order to reduce the vertical stiffness and lateral stiffness of the air spring 1, the bogie further comprises a boss 2 arranged above the longitudinal beam 41, and the boss 2 is optionally formed by welding a steel plate. As Figure 2 and Figure 3As shown, the boss 2 is provided with a boss air chamber 21, which is a closed space for storing gas. The air bag 12 is arranged above the boss 2 and is communicated with the boss air chamber 21.

[0042] In some embodiments, the boss air chamber 21 is further connected with a gas tank 3. The gas tank 3 can be a separate cylinder or other cylinder structure or tank structure capable of storing gas, such as a rectangular or cylindrical hollow tank made of aluminum alloy, stainless steel, etc. The gas tank 3 is arranged between the two longitudinal beams 41 and can be connected to the cross beam 42. At this time, the gas tank 3 and the boss air chamber 21 together serve as an additional air chamber of the air spring 1, which is distributed in different areas of the framework 4, and can solve the problem of narrow space between the bogie and the vehicle body 5 of the tram, and ensure the volume of the additional air chamber, so as to keep the stiffness of the air spring 1 at a low level.

[0043] In some embodiments, at least two air springs 1 can be arranged above each longitudinal beam 41 to meet the load bearing requirements of the vehicle. Figure 2 As shown, two air springs 1 are arranged above each longitudinal beam 41 and along the longitudinal direction, and are arranged at intervals. Four air springs 1 are arranged on the two longitudinal beams 41.

[0044] In some embodiments, for the convenience of installation of the air spring 1, as shown in Figure 3 and Figure 4 The air bag 12 has a positioning column 14 at the bottom, which is inserted into the positioning hole 22 on the boss 2 to position the air bag 12 and the boss 2. After positioning, the air bag 12 and the boss 2 can be fixed by bolting or other methods.

[0045] Exemplarily, the positioning hole 22 is a round hole, and can also be a square hole.

[0046] Exemplarily, the air bag 12 has at least two positioning columns 14. The positioning columns 14 are inserted into the corresponding positioning holes 22 on the boss 2.

[0047] Exemplarily, the positioning columns 14 under the air bag 12 are different in shape and / or size, which has a foolproof effect. For example, two positioning columns 14 are arranged under the air bag 12 and are arranged in sequence along the transverse direction, which are a first positioning column 141 and a second positioning column 142, respectively. The outer diameter of the first positioning column 141 is larger than that of the second positioning column 142. Two positioning holes 22 are arranged on the boss top plate 24 and are inserted into the first positioning column 141 and the second positioning column 142, respectively. Figure 5As shown, the hole diameter of the first positioning hole 221 is larger than that of the second positioning hole 222, the first positioning column 141 is inserted into the first positioning hole 221 and fits and cooperates, and specifically forms a sealed fit; the second positioning column 142 is inserted into the second positioning hole 222 and fits and cooperates, and specifically forms a sealed fit. In other embodiments, three positioning columns 14 or other numbers of positioning columns 14 can also be arranged below the air bag 12.

[0048] Exemplarily, as shown in Figure 3 The bottom of the air bag 12 is provided with a cover plate assembly 13, the cover plate assembly 13 is placed above the top surface of the boss 2, the positioning column 141 is arranged on the cover plate assembly 13 and protrudes downward from the cover plate assembly 13.

[0049] In some embodiments, as shown in Figure 5 and Figure 6 The boss 2 includes a boss top plate 24, a boss bottom plate 25 and an annular boss side plate 27 arranged between the boss top plate 24 and the boss bottom plate 25, and a boss air chamber 21 is formed between the boss top plate 24, the boss bottom plate 25 and the boss side plate 27. Among them, the boss bottom plate 25 can be directly integrally formed on the top plate of the longitudinal beam 41.

[0050] Exemplarily, as shown in Figure 6 The two ends of the boss side plate 27 in the longitudinal direction are C-shaped plates 271 with opposite opening directions, which are adapted to the shape of the air bag 12 with a circular cross section above, wherein for the air bag 12 of the air spring 1 arranged in the edge part in the longitudinal direction, the downward parallel projection is all located on the concave side of the C-shaped plate 271 corresponding to the same end in the longitudinal direction, which can reduce the volume of the boss 2 while ensuring that the boss 2 can support the entire air bag 12.

[0051] Exemplarily, as shown in Figure 6 On the boss side plate 27, two C-shaped plates 271 are connected into an annular plate through two first flat plates 272, which is convenient for processing. The first flat plate 272 is provided with a boss through hole 26 for connecting the gas tank.

[0052] Exemplarily, as shown in Figure 6 The boss top plate 24 covers above the annular boss side plate 27, and the edge of the boss top plate 24 protrudes from the outer peripheral surface of the boss side plate 27 to form a circle of flash structure 241, which is convenient for sealed connection between the boss top plate 24 and the boss side plate 27, and specifically can be welded, and the flash structure 241 below can also be used to shield the welding seam; as Figure 2As shown, the boss side plate 27 is provided with a boss through hole 26, and the boss through hole 26 is connected with the gas tank through the pipeline 6. The flash structure 241 can shield the connection between the boss through hole 26 and the pipeline 6, has the effect of reducing rainwater, dust or other pollutants, and can reduce the risk of external force accidentally hitting the end of the pipeline 6, and reduce the pressure of the sealed connection between the boss through hole 26 and the pipeline 6.

[0053] Alternatively, the boss top plate 24 can also be bolted to the top of the boss side plate 27, and the bottom surface of the boss top plate 24 can also be provided with a groove for installing a sealing ring, which can be sealed and pressed against the boss side plate 27 by the sealing ring.

[0054] In some embodiments, in order to improve the structural strength of the boss 2, as shown in Figure 5 and Figure 6 As shown, the boss air chamber 21 is also provided with a sleeve 23, and the two ends of the sleeve 23 are supported on the boss top plate 24 and the boss bottom plate 25 of the boss 2, so as to serve as a support and reinforcement structure inside the boss air chamber 21.

[0055] Exemplarily, as shown in Figure 3 The positioning column 14 corresponds to the positioning hole 22 on the boss top plate 24 and extends downward into the corresponding sleeve 23. Optionally, the positioning column 14 can extend downward into the upper half of the sleeve 23 through the positioning hole 22. At this time, the sleeve 23 can also serve as a limiting structure for the positioning column 14 to prevent the positioning column 14 from shaking and improve the stability of the installation of the air bag 12.

[0056] Exemplarily, the positioning column 14, the positioning hole 22 and the sleeve 23 are arranged one by one. As shown in Figures 4 to 6 Each air bag 12 is provided with two positioning columns 14, which correspond to two positioning holes 22 on the boss 2 and extend into two sleeves 23, respectively. Among them, the two positioning columns 14 are respectively a first positioning column 141 and a second positioning column 142, the two sleeves 23 are respectively a first sleeve 231 and a second sleeve 232, and the two positioning holes 22 are respectively a first positioning hole 221 and a second positioning hole 222. The first positioning hole 221 is connected to the first sleeve 231 and cooperates with the first positioning column 141; the second positioning hole 222 is connected to the second sleeve 232 and cooperates with the second positioning column 142.

[0057] In some embodiments, as shown in Figure 3 and Figure 6 The first positioning column 141 is provided with an air passage 1411, and the air passage 1411 communicates the air bag 12 with the boss air chamber 21. In addition to the positioning function, the first positioning column 141 also realizes the gas flow between the boss air chamber 21.

[0058] Exemplarily, as shown in Figure 3As shown, the first sleeve 231 is provided with a ventilation hole 2311 penetratingly arranged thereon to communicate the space inside and outside the first sleeve 231, and the ventilation hole 2311 is located below the first positioning column 141 to avoid the first positioning column 141 from blocking the ventilation hole 2311 and affecting the air inlet and outlet of the ventilation hole 2311 and the air passage 1411. In addition, the second positioning column 142 is not used for ventilation and can be a solid structure, and correspondingly, the second sleeve 232 is not provided with a through hole structure, and the space inside the sleeve and the other space of the boss air chamber 21 are not ventilated to ensure the sealing property of the boss air chamber 21.

[0059] Exemplarily, the outer circumferential surface of the first positioning column 141 is provided with a sealing ring to ensure the sealing property between the first positioning column 141 and the first sleeve 231.

[0060] Exemplarily, as shown in Figure 3 The air tank 3 is arranged between the two longitudinal beams 41, and the ventilation hole 2311 of the first sleeve 231 faces the air tank 3, which can reduce air flow loss and improve air inlet and outlet efficiency.

[0061] Exemplarily, on the same air bag 12, a plurality of positioning columns 14 are arranged in sequence in the direction away from the air tank 3, and the positioning column 14 closest to the air tank 3 is the first positioning column 141. As shown in Figure 3 The first positioning column 141 and the second positioning column 142 are arranged in sequence in the direction away from the air tank 3 and are arranged in sequence in the transverse direction at the bottom of the air bag 12, which can further reduce the shielding of the ventilation hole 2311 and improve the air inlet and outlet efficiency.

[0062] In some embodiments, as shown in Figure 6 The longitudinal beam 41 is provided with at least two air springs 1 arranged in sequence in the longitudinal direction, specifically two air springs 1. On the same longitudinal beam 41, the air bag 12 of each air spring 1 communicates with the same boss air chamber 21 in the boss 2, and at this time, all the air springs 1 on one longitudinal beam 41 share one boss air chamber 21, which can simplify gas distribution and improve the consistency of gas supply of each air bag 12.

[0063] In some embodiments, in order to realize the positioning of the auxiliary spring 11 and the vehicle body 5, as shown in Figure 3 and Figure 4 The auxiliary spring 11 is provided with a connecting column 15 at the top, and the connecting column 15 is optionally integrally arranged on the auxiliary spring 11. The connecting column 15 can be centrally arranged on the top surface of the auxiliary spring 11. The connecting column 15 is upwardly inserted into the corresponding connecting hole on the vehicle body 5.

[0064] In some embodiments, to realize the assembly of the air tanks, two air tanks 3 are arranged in sequence along the transverse direction and are connected to the boss air chambers 21 on the longitudinal beams 41 close to them in the transverse direction through the pipelines 6. The air tanks 3, which are hollow structures, can also be independent air cylinders. At this time, each boss air chamber 21 is connected to a different air tank 3, respectively meeting the needs of the additional air chambers of the air springs on each side of the longitudinal beam 41. As shown in Figure 2 the bogie is provided with two air tanks, and in the transverse direction, one boss 2, one air tank and two air springs 1 on one side of the bogie are connected together through the pipeline 6.

[0065] It should be noted that in the transverse direction, the side close to the other longitudinal beam 41 or the side close to the space between the two longitudinal beams 41 is the inner side in the transverse direction, and the side away from the other longitudinal beam 41 is the outer side in the transverse direction.

[0066] Exemplarily, as shown in Figure 2 the boss 2 is provided with a boss through hole 26 on the inner side in the transverse direction, and the pipeline 6 is connected to the boss through hole 26, facilitating the connection of the pipeline 6 and the boss 2. In addition, the other end of the pipeline 6 can also be connected to an opening of the air tank facing the corresponding longitudinal beam 41, which is provided on the side away from the other air tank in the transverse direction.

[0067] Exemplarily, as shown in Figure 2 the longitudinal beam 41 includes two side beams 411, two connecting beams 413 and one intermediate beam 412. The intermediate beam 412 is located between the two side beams 411 in the longitudinal direction, and is located on the outer side of the two side beams 411 in the transverse direction. The two ends of the intermediate beam 412 are connected to the two side beams 411 through the two connecting beams 413 respectively. The boss 2 is arranged on the intermediate beam 412. The intermediate beam 412 and the two side beams 411 form a U-shaped beam, and the intermediate beam 412 and the two connecting beams 413 form an avoiding space 414 on the inner side in the transverse direction. The pipeline 6 connects the boss 2 through the avoiding space 414, which can make full use of the space in the frame 4 and avoid the risk of being hit by the pipeline 6.

[0068] Exemplarily, as shown in Figure 2 in the avoiding space 414, the middle section 61 of the pipeline 6 can be inclined upward from the side close to the air tank 3 in the transverse direction close to the corresponding boss 2, and the middle section 61 can be at least partially attached to one of the connecting beams 413 or fixed to the connecting beam 413 through a hoop structure. In addition, the upper section 62 of the pipeline 6 above the middle section 61 can also be attached to the connecting beam 413 and extend to the boss through hole 26 parallel to the top surface of the connecting beam 413, and the upper section 62 is not higher than the top surface of the connecting beam 413.

[0069] Exemplarily, as shown in Figure 2As shown, the frame 4 includes two cross beams 42 connected between two longitudinal beams 41, the two cross beams 42 are arranged in sequence in the longitudinal direction, and the two ends of the gas tank 3 are connected between the two cross beams 42. Alternatively, the two cross beams 42 are located on both sides of the U-shaped beam in the longitudinal direction, and the two ends are respectively connected to the side beams 411 on the two longitudinal beams 41, and the cross beam 42 is lower than the longitudinal beam 41.

[0070] Exemplarily, as shown in Figure 2 The pipe 6 is located below the lower section 63 of the middle section 61, and extends along the middle part of the longitudinal end face of the cross beam 42, which has the effect of positioning the lower section 63. The two ends of the lower section 63 are respectively connected to the middle section 61 and the gas tank 3. In addition, the lower section 63 and the upper section 62 can be arranged in parallel, and form an obtuse angle with the middle section 61.

[0071] Exemplarily, as shown in Figure 7 The two cross beams 42 are also fixed with a supporting plate 47, which can be fixed to the bottom plate of the two cross beams 42. The gas tank 3 is arranged above the supporting plate 47, and the supporting plate 47 can be fixedly connected to the gas tank 3 by mounting bolts 48, which can be four mounting bolts 48.

[0072] Exemplarily, the gas tank is located in the middle of the frame 4, and is located between the two traction rods 45 of the bogie in the transverse direction.

[0073] In other embodiments, the gas tank 3 can also be installed at other positions on the bottom of the frame 4; in addition, only one of the gas tanks 3 can also be provided.

[0074] In addition to the above bogie, the present application also provides a tram, which includes a bogie, which can be any one of the bogies provided in the above embodiments, and the beneficial effects can be correspondingly referred to the above embodiments. The bogie further includes an axle bridge 46, a traction motor 44, and a gear box 43 connected to the frame respectively.

[0075] The tram further includes a vehicle body 5. As shown in Figure 1 The bottom of the vehicle body 5 extends downwardly between the two longitudinal beams 41. The two end plates of the bottom of the vehicle body 5 in the transverse direction are gradually inclined outwardly from bottom to top.

[0076] At this time, the bottom of the vehicle body 5 has the structural feature of being wide in cross section and narrow at the bottom, the floor of the vehicle is low, which is convenient for passengers to get on and off the vehicle, the middle of the bogie is low and the two sides are high, and the application of the air spring 1 which is small at the top and large at the bottom can adapt to the structure of the vehicle body 5, and solve the problem of compact structure of the bogie caused by the low floor of the tram.

[0077] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" or "coupled" to another element, it can be directly on the other element or intervening elements can also be present. In addition, the term "a plurality" as used herein means two or more.

[0078] The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, specify relative positions or orientation relationships based on the positions or orientation relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0079] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0080] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0081] The bogie and tramcar provided by the present application are described in detail above. The principles and implementation modes of the present application are described by applying specific examples in this paper. The above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A bogie, characterized in that, The utility model relates to a kind of air spring and air spring frame, including: Frame (4), including two longitudinal beams (41); Air spring (1), be provided above the longitudinal beam (41), including air bag (12) and the auxiliary spring (11) of being provided in the middle above the air bag (12).

2. The bogie according to claim 1, characterized in that Further comprising boss (2) being provided above the longitudinal beam (41), boss air chamber (21) is provided in the boss (2);The air bag (12) is provided above the boss (2), and is communicated with the boss air chamber (21).

3. The bogie of claim 2, wherein The bottom of the air bag (12) has a positioning column (14), and the positioning column (14) is inserted with the boss (2).

4. The bogie of claim 3, wherein The boss air chamber (21) is further provided with a sleeve (23), and the two ends of the sleeve (23) are supported on the boss top plate (24) and the boss bottom plate (25) of the boss (2), respectively;The sleeve (23) corresponds to the positioning hole (22) on the boss top plate (24);The positioning column (14) is inserted into the positioning hole (22) and extends into the corresponding sleeve (23).

5. The bogie of claim 3, wherein At least one of the positioning column (14) is a first positioning column (141), a gas passage (1411) is provided in the first positioning column (141), the first positioning column (141) is inserted into the boss (2), and the gas passage (1411) is communicated with the air bag (12) and the boss air chamber (21).

6. The bogie of claim 5, wherein, The boss air chamber (21) is further provided with a first sleeve (231), and the two ends of the first sleeve (231) are supported on the boss top plate (24) and the boss bottom plate (25) of the boss (2), the first positioning column (141) is inserted into the first sleeve (231), and the gas passage (1411) is communicated with the first sleeve (231). The first sleeve (231) is provided with a vent hole (2311) penetrating through, to communicate the space on both sides of the first sleeve (231), and the vent hole (2311) is located below the first positioning column (141).

7. The bogie of claim 6, wherein Further comprising a gas tank (3) communicated with the boss air chamber (21), the gas tank (3) is arranged between the two longitudinal beams (41), and the vent hole (2311) faces the gas tank (3). On the same air bag (12), a plurality of positioning columns (14) are arranged in sequence in a direction away from the gas tank (3), and the positioning column (14) closest to the gas tank (3) is the first positioning column (141).

8. The bogie of claim 2, wherein Further comprising a gas tank (3) communicated with the boss air chamber (21), two gas tanks (3) are arranged between the two longitudinal beams (41) and in sequence in a transverse direction, and are communicated with the boss air chamber (21) on the longitudinal beam (41) close to the transverse direction by a pipeline (6).

9. The bogie of claim 8, wherein, The boss (2) is provided with a boss through hole (26) on the inner side in the transverse direction, and the pipeline (6) is connected to the boss through hole (26). The longitudinal beam (41) comprises two side beams (411), two connecting beams (413) and a middle beam (412); the middle beam (412) is located between the two side beams (411) in the longitudinal direction, the middle beam (412) is located outside the two side beams (411) in the lateral direction, the two ends of the middle beam (412) are connected to the two side beams (411) through the two connecting beams (413) respectively, the boss (2) is arranged on the middle beam (412), the middle beam (412) and the inner sides of the two connecting beams (413) in the lateral direction form an avoiding space (414), and the pipeline (6) is connected to the boss (2) through the avoiding space (414).

10. A tram, characterized in that The bogie comprises the car body (5), the bottom of the car body (5) extends downward into between the two longitudinal beams (41), and the end plates of the bottom of the car body (5) in the lateral direction are gradually inclined outward from bottom to top.

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