Built-in non-power bogie frame, bogie and low-floor tramcar

Abstract

The utility model discloses a built-in non-power bogie frame, a bogie and a low-floor tramcar, and belongs to the technical field of railway vehicles. The built-in non-power bogie frame comprises a frame body of a structure similar to a Chinese character'jing '. The frame body comprises two cross beams arranged in a spaced mode, a connecting base in butt joint with the cross beams and side beams in butt joint with the ends of the connecting base. Wherein the side beams and the cross beams are all made of section bars, the connecting seats are formed in a casting mode, and the ends of the connecting seats are in a step shape so that the side beams can be located above the connecting seats, and a downward-concave structure can be formed in the middle section of the framework body. The bogie of the large-axle-load low-floor tramcar has the advantages of being high in strength, simple in framework structure and convenient to produce and maintain.

Description

Technical Field

[0001] This utility model relates to the field of rail transit vehicle technology, and in particular to a built-in non-powered bogie frame, bogie, and low-floor tram. Background Technology

[0002] The structure of the low-floor bogie is a key component that ensures stable vehicle operation and a comfortable passenger experience;

[0003] Traditional built-in non-powered bogie frames suffer from problems such as complex structure, numerous welded parts, and high production costs. Meanwhile, with the installation and use of more intelligent and green equipment and the continuous increase in passenger capacity requirements, the maximum axle load of the bogie is constantly increasing, and the strength requirements of the frame are becoming increasingly higher. Therefore, there is a need to provide a highly integrated and easy-to-maintain non-powered bogie frame that can meet the requirements of greater loads. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the existing technology and provide a built-in non-powered steering frame to solve the problem that the existing built-in non-powered steering frame is made of a large number of steel plates welded together, with a complex welding structure and limited strength improvement.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a built-in non-powered steering frame, comprising:

[0007] The main body of the structure is constructed in a grid-like pattern.

[0008] The frame body includes two spaced-apart crossbeams, a connecting seat that connects to the crossbeams, and a side beam that connects to the end of the connecting seat.

[0009] The side beams and cross beams are both profiles, the connecting seat is cast, and the end of the connecting seat is stepped so that the side beams can be located above the connecting seat, so that the middle section of the frame body forms a concave structure.

[0010] Furthermore, a bowl-shaped spring mounting seat is provided below the side beam.

[0011] Furthermore, the connector has symmetrically formed end heads at both ends;

[0012] The upper part of the end has a first connecting part that extends upward and has an inverted L-shaped structure, a second connecting part is formed on one side of the end, and a third connecting part is formed on the other side.

[0013] Furthermore, the second connecting part and the upper and lower surfaces of the connecting seat are coplanar.

[0014] Further, the frame body is located inside the connecting seat and integrated with a transverse stop seat.

[0015] Further, the height of the crossbeam is consistent with the concave height of the middle section of the connecting seat.

[0016] Further, two transverse damper seats are arranged diagonally on the sides of the crossbeam.

[0017] Further, the equipment mounting seat outside the frame body is formed by casting and is butt-welded with the connecting seat.

[0018] The utility model discloses a bogie, comprising: the built-in non-power bogie frame.

[0019] The utility model discloses a low-floor tram, comprising: the built-in non-power bogie frame or the bogie.

[0020] In the above technical scheme, the utility model provides a built-in non-power bogie frame, which has the beneficial effects of:

[0021] 1. The built-in non-power bogie frame has the advantages of optimized frame structure, improved frame strength, and meeting the load bearing requirements of a large-axle low-floor tram bogie.

[0022] The existing frame structure is complex and has low strength, and the built-in non-power bogie frame of the utility model is composed of profiles and castings, which improves the strength and simplifies the frame structure, facilitating production and maintenance.

[0023] The existing connecting seat has a segmented welding structure, which increases the types of materials and the number of welds, causing stress concentration and other problems. The built-in non-power bogie frame of the utility model has an integrated casting structure, which improves the strength of the connecting seat.

[0024] The existing equipment mounting seat has a dispersed welding structure, which makes the frame device structure complex, increases the welding workload, and increases the equipment space. The built-in non-power bogie frame of the utility model adopts an integrated design principle, which is more reasonable and compact in space layout, optimizes the equipment layout, provides feasible space for the reduction of the floor surface, and simplifies the frame device structure.

[0025] 2. The bogie comprises the built-in non-power bogie frame, which has the same beneficial effects.

[0026] 3. The bogie designed in the utility model has the same beneficial effects as the above-mentioned. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to make the technical personnel in the art better understand the technical scheme of the utility model, the utility model will be further described in detail in combination with the drawings below.

[0028] Figure 1 is the overall structure schematic diagram of the utility model discloses a built-in non-power bogie frame;

[0029] Figure 2 is the utility model discloses a built-in non-power bogie frame connecting seat axonometric drawing;

[0030] Figure 3 is Figure 2 Another perspective axonometric drawing;

[0031] Figure 4 is the utility model discloses a built-in non-power bogie frame equipment mounting seat axonometric drawing.

[0032] Mark explanation:

[0033] 1, side beam;2, connecting seat;3, crossbeam;4, equipment mounting seat;5, primary spring mounting seat;6, transverse damper seat;

[0034] 21, first connecting part;22, second connecting part, 23, third connecting part;24, transverse stop seat;25, hoisting stop seat mounting interface;

[0035] 41, secondary spring mounting interface;42, traction rod seat mounting interface;43, equipment mounting seat and connecting seat butt joint interface;44, hoisting rod mounting interface;45, vertical damper mounting interface;46, brake reaction rod mounting interface. DETAILED DESCRIPTION

[0036] In order to make the technical personnel in the art better understand the technical scheme of the utility model, the utility model will be further described in detail in combination with the drawings below.

[0037] Referring to Figure 1 As shown;

[0038] The utility model discloses a built-in non-power bogie frame, comprising: frame body;

[0039] The main structure of the frame is in the shape of a "well" and includes two spaced crossbeams 3, a connecting seat 2 that connects to the crossbeams 3, and a side beam 1 that connects to the end of the connecting seat 2. The side beam 1 and the connecting seat 2 adopt a segmented structure.

[0040] Among them, the side beam 1 and the cross beam 3 are both profiles, the connecting seat 2 is cast, and the end of the connecting seat 2 is stepped, so that the side beam 1 can be located above the connecting seat 2, so that the middle section of the frame body forms a concave structure. The four side beams 1 are respectively paired with the two ends of the two connecting seats 2, and the connecting seat 2 and the cross beam 3 are paired to form a square structure.

[0041] The main body of the frame is an axle box built-in structure, which adopts a "well" shaped structure welded from profiles, castings and forgings. The main body of the frame includes side beams 1, connecting seats 2, and cross beams 3.

[0042] The side beam 1 adopts a butt welding method with the connecting seat 2. The profile replaces the steel plate welding structure, which reduces the number of welds, simplifies the welding structure, and improves the overall strength of the frame.

[0043] The connecting seat 2 is an integral casting, replacing the segmented welding structure. This not only eliminates the welding defects and stress concentration problems that may be caused by segmented welding, but also significantly reduces machining and welding dimensional errors, ensuring higher manufacturing precision and dimensional stability, and significantly improving the strength of the frame. The two ends of the connecting seat 2 have a tree-branch-shaped symmetrical arrangement structure, and the middle section adopts a concave structure to reduce the height of the floor surface. At the same time, a transverse stop seat is integrated on the inner side of the concave middle section to limit the lateral displacement of the vehicle body.

[0044] The crossbeam 3 uses profiles to reduce the types of raw materials and improve material utilization. The height of the crossbeam 3 is consistent with the recessed height of the middle section of the connecting seat 2, providing feasible space for lowering the floor. In order to achieve a low-floor structure for the vehicle, no equipment mounting seats are set in the longitudinal area above the crossbeam 3, and two transverse shock absorber seats are arranged diagonally on the side of the crossbeam 3.

[0045] See Figure 1 As shown, the main frame structure includes side beams 1, connecting seats 2, cross beams 3, equipment mounting seats 4, primary spring mounting seats 5, and lateral vibration damper seats 6. During assembly, connecting seats 2 are connected to cross beams 3, side beams 1, and equipment mounting seats 4 using butt welds. Side beams 1 and cross beams 3 utilize profiles instead of welded steel plates, improving strength while simplifying the frame structure and optimizing welding performance.

[0046] Preferably, a bowl-shaped primary spring mounting seat 5 is provided below the side beam 1, which ensures the precise positioning of the primary spring by the frame body.

[0047] Preferably, the connecting seat 2 is symmetrically formed with end heads at both ends, the upper part of the end head is formed with a first connecting part 21 in an inverted L-shaped structure extending upward, the side of the end head is formed with a second connecting part 22, and the other side of the end head is formed with a third connecting part 23, wherein the second connecting part 22 is coplanar with the upper and lower surfaces of the connecting seat 2.

[0048] Referring to Figure 2 As shown in the figure, the end head positions of the connecting seat 2 at both ends are in a symmetrical structure, the upper part of the end head is formed with a first connecting part 21 in a structure for abutting the side beam, the side of the end head is formed with a second connecting part 22 in a structure for abutting the cross beam 3, and the third connecting part 23 at the side of the first connecting part 21 is formed in a structure for abutting the equipment mounting seat 4, and the inner side of the connecting seat 2 is provided with a transverse stop seat 24, wherein after the cross beam 3 abuts the second connecting part 22, the cross beam 3 is coplanar with the upper and lower surfaces of the connecting seat 2.

[0049] The body of the connecting seat 2 is integrally formed with the first connecting part 21, the second connecting part 22, the third connecting part 23, and the transverse stop seat 24 instead of a welded structure, and the body of the connecting seat 2 is provided with a lifting stop seat mounting interface 25 at both ends, wherein the integral casting of the connecting seat 2 improves the overall strength of the connecting seat, and the integration of the transverse stop seat 24 on the connecting seat 2 is beneficial to improving the strength of the transverse stop seat 24.

[0050] Preferably, the transverse stop seat 24 is integrated on the inner side of the connecting seat 2, that is, the transverse stop seat is integrated on the inner side of the connecting seat 2 in the lower concave middle section of the frame body, which is used to limit the lateral displacement of the vehicle body.

[0051] Preferably, the outer side of the frame body is provided with an equipment mounting seat 4 in a cast structure, and the equipment mounting seat 4 is abutted and welded with the connecting seat 2.

[0052] Specifically, referring to Figure 3 As shown in the figure, the outer side of the frame body is provided with four equipment mounting seats 4, which are in a cast structure and are abutted and welded with the connecting seat 2. The equipment mounting seat 4 integrates various equipment mounting seat interfaces in height, and the equipment mounting seat 4 integrates the secondary spring mounting interface 41, the traction rod mounting interface 42, the interface 43 between the equipment mounting seat and the connecting seat, the lifting rod mounting interface 44, the vertical damper mounting interface 45, and the brake reaction rod mounting interface 46 into one, which simplifies the structure of the bogie, and is convenient for production, maintenance and maintenance. At the same time, the secondary spring seat is arranged on the outer side of the side beam 1 of the frame, which maximizes the lateral span of the secondary spring and improves the running stability and anti-rolling performance of the vehicle. At the same time, according to the needs of braking, the magnetic rail brake stop seat can be arranged on the connecting seat 2 and the equipment mounting seat 4.

[0053] The utility model discloses a bogie, which comprises the built-in non-power bogie frame.

[0054] Since the bogie has the built-in non-powered bogie frame as described above, it has the same beneficial effects as the built-in non-powered bogie frame, which will not be described here one by one.

[0055] The utility model discloses a low-floor tram, which comprises the built-in non-powered bogie frame or the bogie as described above.

[0056] Since the low-floor tram has the built-in non-powered bogie frame or the bogie as described above, it has the same beneficial effects, which will not be described here one by one.

[0057] The above only describes some exemplary embodiments of the utility model in a manner of description, and it is needless to say that the described embodiments can be modified in various manners without departing from the spirit and scope of the utility model for ordinary skilled persons in the art. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the utility model claims.

Claims

1. A built-in non-powered steering frame, comprising: The main body of the structure is constructed in a grid-like shape, characterized by: The frame body includes two spaced-apart crossbeams (3), a connecting seat (2) that connects to the crossbeams (3), and a side beam (1) that connects to the end of the connecting seat (2); The side beam (1) and the cross beam (3) are both profiles, the connecting seat (2) is cast, and the end of the connecting seat (2) is stepped so that the side beam (1) can be located above the connecting seat (2) so that the middle section of the frame body forms a concave structure.

2. The built-in non-powered steering frame according to claim 1, characterized in that; A bowl-shaped spring mounting seat (5) is provided below the side beam (1).

3. The built-in non-powered steering frame according to claim 1, Its characteristics are: The connector (2) has symmetrically formed ends at both ends; The upper part of the end has a first connecting part (21) extending upward in an inverted L-shaped structure, a second connecting part (22) is formed on one side of the end, and a third connecting part (23) is formed on the other side.

4. The built-in non-powered steering frame according to claim 3, characterized in that; The second connecting part (22) is coplanar with the upper and lower surfaces of the connecting seat (2).

5. The built-in non-powered steering frame according to claim 3, characterized in that... ； The frame body is located inside the connecting seat (2) and integrates a transverse stop seat (24).

6. The built-in non-powered steering frame according to claim 1, characterized in that; The height of the crossbeam (3) is consistent with the concave height of the middle section of the connecting seat (2).

7. The built-in non-powered steering frame according to claim 1, characterized in that... ； Two transverse damper seats (6) are arranged diagonally on the side of the crossbeam (3).

8. The built-in non-powered steering frame according to claim 1, characterized in that... ； The outer side of the frame body is provided with a cast equipment mounting base (4), which is welded to the connecting base (2).

9. A bogie, characterized in that, include: The built-in non-powered steering frame according to any one of claims 1-8.

10. A low-floor tram, characterized in that, include: The built-in non-powered bogie frame according to any one of claims 1-8 or the bogie according to claim 9.

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