Train bogie connecting unit and train

Abstract

The application discloses a train axle connecting unit and a train, which comprises symmetrically arranged goose-shaped beams across two cross beams, a longitudinal beam arranged between the two cross beams, the goose-shaped beam comprising a goose head, a goose body, a goose wing and an upper longitudinal beam between the two goose wings, the goose-shaped beam comprising a lower cover plate, a cylinder for placing an air spring arranged in the goose body, and a plurality of rib plates connected with the cylinder arranged in the goose-shaped beam; the lower cover plate comprises an L-shaped first lower cover plate and a second lower cover plate arranged on both sides of the first lower cover plate, the cylinder is arranged on the horizontal plane of the first lower cover plate, and the vertical plane of the first lower cover plate is connected with the upper longitudinal beam; a support profile is arranged above the upper longitudinal beam and located in the goose body, the support profile extends from the upper longitudinal beam to the cylinder along the first lower cover plate and is connected with the side wall of the cylinder. The application significantly strengthens the bending resistance between the air spring support position and the upper mounting beam of the axle.

Description

TECHNICAL FIELD

[0001] The present application relates to a train axle connecting unit and a train, and belongs to the technical field of a guide rubber-tyred train body. BACKGROUND

[0002] The weight restricts the cruising range of the rubber-tyred train, so lightweight is a key technical point. To ensure the comfort of passengers, an independent suspension axle with good damping performance is an important choice, and low floor is a necessary feature.

[0003] The axle connecting unit is a main load-bearing component of the rubber-tyred train body (equivalent to the bolster beam, traction beam and frame of the bogie), which bears various loads during train operation and protects equipment and personnel. The rubber-tyred train may pass through bumps such as potholes and speed bumps during operation, so the axle connecting unit must have sufficient torsional stiffness.

[0004] The applicant's prior application: Chinese invention patent CN114670883B discloses a train axle connecting unit and a train, which comprises a goose-shaped beam, a driving beam, a cross beam and a middle longitudinal beam; the cross beam is arranged in parallel and spaced apart, two goose-shaped beams are symmetrically arranged on the two cross beams, the adjacent sides of the two goose-shaped beams are connected by the driving beam, and the far sides of the two goose-shaped beams are provided with side riveting plates for mounting the side walls of the train body; the middle longitudinal beam is arranged between the two cross beams. However, the application has the following defects: 1. The stiffness of the air spring mounting sleeve support is not enough; 2. The transmission path between the connecting arm and the air spring is long; 3. The thickness of the upper connecting rod arm mounting seat is large. SUMMARY

[0005] The present application aims to provide a train axle connecting unit and a train to solve the technical problem that the downward transmission path between the connecting arm of the existing goose-shaped beam and the air spring is long; the cavity formed by the upper cover plate and the lower cover plate at both ends of the structure has no rib plate in the cavity, and the stiffness is not enough.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0007] A train axle connecting unit, comprising a goose-shaped beam symmetrically arranged on two cross beams, a longitudinal beam arranged between the two cross beams, the goose-shaped beam comprising a goose head, a goose body, a goose wing and an upper longitudinal beam between the two goose wings, the goose-shaped beam comprising a lower cover plate, the goose body comprising a cylinder for placing an air spring, the lower cover plate comprising an L-shaped first lower cover plate and a second lower cover plate arranged on both sides of the first lower cover plate, the horizontal plane of the first lower cover plate extending from the goose head end to above the upper longitudinal beam, the cylinder being arranged on the horizontal plane of the first lower cover plate, and the vertical plane of the first lower cover plate being connected with the upper longitudinal beam; a support profile is arranged above the upper longitudinal beam and connected with the upper longitudinal beam and the cylinder inside the goose body.

[0008] Therefore, the first lower cover plate extends above the upper longitudinal beam, the cylinder is mounted on the first lower cover plate, the air spring is better supported, and effective transmission of the vertical load transmitted by the air spring is facilitated; the support profile is arranged to form a multi-cavity box structure with strong vertical bending stiffness between the cylinder and the upper longitudinal beam, and the structural rigidity of the goose head and goose body of the goose-shaped beam is improved.

[0009] According to the embodiments of the present application, the present application can be further optimized, and the following is the technical scheme formed after optimization:

[0010] Specifically, the support profile extends from the upper longitudinal beam along the first lower cover plate to the cylinder and is connected with the side wall of the cylinder, the support profile is a U-shaped section profile with an L-shaped notch, and the L-shaped notch is matched with the right-angle part of the first lower cover plate.

[0011] Specifically, the goose-shaped beam is provided with a plurality of rib plates connected with the cylinder; the rib plates include a first rib plate arranged in the goose head and a second rib plate connected with the side wall of the cylinder and extending downward along the goose body; one end of the first rib plate is connected with the side wall of the cylinder, and the other end extends to the front end of the goose head; the second rib plate is S-shaped and connected with the side wall of the cylinder; the rib plates further include a third rib plate arranged between the two cylinders and a fourth rib plate arranged in the goose wing.

[0012] Specifically, the goose body includes a first vertical plate connected with the side wall of the cylinder, extending downward from the goose body to the bottom end of the goose wing, a second vertical plate arranged on the opposite side of the first vertical plate, and a third vertical plate arranged between the upper longitudinal beam and the second lower cover plate; the second vertical plate is arranged above the upper longitudinal beam.

[0013] Specifically, the goose wing includes a side cover plate, an inner cover plate and an outer cover plate.

[0014] Specifically, the upper longitudinal beam 14 longitudinally penetrates the connection position of the goose wing 13 and the goose body 12.

[0015] Specifically, the upper longitudinal beam includes a mounting beam for mounting the axle ball hinge at the middle part of the upper longitudinal beam, and a plurality of rib plates are arranged in the mounting beam.

[0016] Specifically, the lower part of the mounting beam is provided with two pairs of mounting palms 141, and an axle ball hinge is mounted in the middle part of each pair of mounting palms; the mounting palm includes a mounting surface 1411, a nut mounting surface 1412 and a stop surface 1413 for preventing the rotation of the nut 5; the middle section of the mounting beam is cross-shaped.

[0017] Specifically, the mounting beam is provided with a placing groove, and the axle ball joint is arranged in the placing groove; two sides of the placing groove are provided with mounting holes, and nuts are arranged on the inner side of the mounting beam corresponding to the mounting holes.

[0018] The mounting beam structure of the upper longitudinal beam has small distance between the mounting surface and the channel surface, small width of the through hole, and the mounting bolt can be disassembled outside the vehicle without the need of setting an access hole in the vehicle.

[0019] Based on the same inventive concept, the application further provides a train comprising the train axle connecting unit as described above.

[0020] Compared with the prior art, the application has the following beneficial effects:

[0021] 1) The first lower cover plate in the middle is connected with the upper longitudinal beam, and the force on the air spring in the cylinder can be directly transmitted to the upper longitudinal beam through the vertical part of the first lower cover plate, thereby simplifying the force transmission path of the lower cover plate; the lower cover plate and the support profile significantly improve the bending resistance between the air spring support position and the upper mounting beam of the axle.

[0022] 2) The cylinder periphery is provided with rib plates, and the rib plates form a mesh structure, thereby improving the rigidity of the air spring support structure and being beneficial to the transmission of the vertical load of the air spring. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of the axle connecting unit of the application;

[0024] Figure 2 is an isometric structural schematic view of the goose-shaped beam of the application;

[0025] Figure 3 is a structural schematic view of the internal structure of the goose-shaped beam of the application;

[0026] Figure 4 is a structural schematic view of the bottom structure of the goose-shaped beam of the application;

[0027] Figure 5 is a front view of the upper longitudinal beam of the application;

[0028] Figure 6 is Figure 5 a sectional view of A-A;

[0029] Figure 7 is Figure 5 a sectional view of B-B;

[0030] Figure 8 is an isometric structural schematic view of the upper longitudinal beam of the application;

[0031] Figure 9The isometric structural schematic diagram of the upper longitudinal beam of the second embodiment of the present application

[0032] Figure 10 The internal structural schematic diagram of the upper longitudinal beam of the second embodiment of the present application

[0033] In the figure

[0034] 1-goose-shaped beam; 11-goose head; 111-upper cover plate; 112-side vertical plate; 113-first riveting plate; 114-first rib plate; 115-lower cover plate; 1151-first lower cover plate; 1152-second lower cover plate; 12-goose body; 121-cylinder; 122-first vertical plate; 123-second rib plate; 124-support profile; 125-third rib plate; 126-second vertical plate; 127-third vertical plate; 13-goose wing; 131-side cover plate; 132-inner cover plate; 133-outer cover plate; 134-fourth rib plate; 14-upper longitudinal beam; 14a-mounting beam; 141-mounting palm; 1411-mounting surface; 1412-nut mounting surface; 1413-stop surface; 142-rib plate; 15-putting slot; 151-mounting hole; 152-nut cabin; 2-longitudinal beam; 3-cross beam; 4-axle ball joint; 5-nut. DETAILED DESCRIPTION

[0035] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left", "right" appear in the following text, they only mean the same as the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

[0036] As Figure 1 shown, the train axle connecting unit of the present embodiment comprises a goose-shaped beam 1, a longitudinal beam 2 and a cross beam 3. Two cross beams 3 are arranged in parallel at the front and rear of the lower part of the axle unit, a longitudinal beam 2 is arranged between the midpoints of the two cross beams 3, and two goose-shaped beams 1 are symmetrically arranged across the two cross beams 3.

[0037] As Figure 2 , Figure 3 , Figure 4 shown, the goose-shaped beam 1 is in the shape of a goose with wings down, and is a front-rear and left-right symmetrical structure, comprising a goose head 11, a goose body 12, a goose wing 13 and an upper longitudinal beam 14 between the two goose wings.

[0038] The goose-shaped beam 1 is provided with several ribs connected to the cylinder 121. The lower cover plate 115 includes an L-shaped first lower cover plate 1151 and second lower cover plates 1152 provided on either side of the first lower cover plate 1151. The cylinder 121 is provided on the horizontal surface of the first lower cover plate 1151, and the vertical surface of the first lower cover plate 1151 is connected to the upper longitudinal beam 14. Above the upper longitudinal beam 14, a support profile 124 is provided within the goose trunk 12. The support profile 124 extends upward from the upper longitudinal beam 14 along the first lower cover plate 1151 to the cylinder 121, connecting to the sidewall of the cylinder 121. The support profile 124 is a U-shaped cross-section profile with an L-shaped notch, which mates with the right-angle portion of the first lower cover plate 1151.

[0039] The ribs include a first rib 114 arranged inside the goose head 11 and a second rib 123 connected to the side wall of the cylinder 121 and extending downward along the goose body 12; one end of the first rib 114 is connected to the side wall of the cylinder 121, and the other end extends to the front end of the goose head 11; the second rib 123 is S-shaped and connected to the side wall of the cylinder 121; the ribs also include a third rib 125 arranged between the two cylinders 121 and a fourth rib 134 arranged inside the goose wing 13.

[0040] The goose head includes an upper cover plate 111, side panels 112, a first riveted plate 113, a first rib plate 114, and a first lower cover plate 1151. One end of the upper cover plate 111, first lower cover plate 1151, side panels 112, and first rib plate 114 is connected to the first riveted plate 113. The first lower cover plate 1151 has an L-shaped cross-section, with the horizontal surface being the empty spring mounting surface and the vertical surface being connected to the upper longitudinal beam 14.

[0041] The goose body 12 includes a first vertical plate 122 connected to the side wall of the cylinder 121 and extending downward along the goose body 12 to the bottom end of the goose wing 13, a second vertical plate 126 arranged on the opposite side of the first vertical plate 122, and a third vertical plate 127 arranged between the upper longitudinal beam 14 and the second lower cover plate 1152; the second vertical plate 126 is arranged above the upper longitudinal beam 14.

[0042] The lower end of the cylinder 121 is attached to the upper surface of the first lower cover plate 1151, and the upper end penetrates the upper surface of the upper cover plate 111 and protrudes from the upper surface of the upper cover plate 111; the cylinder 121 is connected to the side vertical plate 112 and the first rib plate 114 on the lateral outer side of the vehicle, and is connected to the third rib plate 125 on the lateral inner side of the vehicle, and the third rib plate 125 is arranged between the two cylinders 121; the side of the cylinder 121 away from the other cylinder 121 is provided with the first vertical plate 122 and the second rib plate 123. In this way, the cylinder 121 and the surrounding structure form a mesh box structure, which significantly increases the rigidity of the air spring support position and ensures the effective transmission of the vertical load transmitted by the air spring.

[0043] The second rib plate 123 is perpendicular to the second lower cover plate 1152 and is S-shapedly connected to the side of the cylinder 121 and the vertical surface of the upper longitudinal beam 14 on the outer side of the vehicle; the first vertical plate 122, the second rib plate 123, and the second vertical plate 126 form a box structure above the second lower cover plate 1152; the second vertical plate 126 and the third vertical plate 127 form a box structure below the second lower cover plate 124. In this way, a multi-cavity box structure with strong vertical and bending stiffness is formed between the cylinder 121 and the upper longitudinal beam 14.

[0044] The bottom of the goose wing 13 is connected to the upper surface of the cross beam 3 and includes a side cover plate 131, an inner cover plate 132, an outer cover plate 133, and a fourth rib plate 134. The outer cover plate 133 is an extension of the upper cover plate 111 at the goose wing 13.

[0045] The upper longitudinal beam 14 longitudinally penetrates the connection position of the goose wing 13 and the goose body 12.

[0046] As shown in Figure 5 The upper longitudinal beam 14 includes a mounting beam 14a for mounting the axle ball joint 4 at the middle of the upper longitudinal beam 14, and a plurality of rib plates 142 are arranged inside the mounting beam 14a.

[0047] Upper longitudinal beam embodiment 1

[0048] As shown in Figure 5 , Figure 6 The lower part of the mounting beam 14a is provided with two pairs of mounting palms 141, and each mounting palm 141 is provided with an axle ball joint 4 at the middle; the mounting palm includes a mounting surface 1411, a nut mounting surface 1412, and a stop surface 1413 for preventing the rotation of the nut 5; as shown in Figure 7 The middle cross section of the mounting beam 14a is cross-shaped.

[0049] Installation and removal can be completed from the vehicle's exterior. The space between the pair of mounting flanges 141 occupies the axle ball joint 4. A pair of ribs 142 are positioned above the mounting flanges 141, corresponding to the supporting profile 124. The middle portion of the upper longitudinal beam 14 has a cross-section with a right-angled outer contour, while its ends have a square-shaped cross-section with rounded corners on the vehicle's exterior. A smooth transition structure 143 is provided between the right angles and the rounded corners.

[0050] Upper longitudinal beam embodiment 2

[0051] Different from the upper longitudinal beam embodiment 1, a placement groove 15 is provided on the mounting beam 14a, and the axle ball joint 4 is arranged in the placement groove 15; mounting holes 151 are provided on both sides of the placement groove 15, and a nut compartment 153 is provided on the inner side of the mounting beam 14a corresponding to the mounting hole 151.

[0052] The mounting hole 151 is provided in the center; Figure 9 As shown, the inside of the car is an integrally closed surface; Figure 10 As shown, the nut compartment is open in the front-to-back direction to facilitate the insertion of the nut, and the upper and lower surfaces 155 of the nut compartment hinder the rotation of the nut. This solution can also meet the requirements of "occupying a small channel width; and completing the bolt disassembly and assembly only outside the vehicle".

[0053] The intersection edges of all parts in the goose-shaped beam 1 are welded.

[0054] The present invention features ribs around the cylinder, forming a mesh structure that enhances the rigidity of the empty spring support structure and facilitates the transfer of vertical loads from the empty spring. The empty spring support is directly connected to the upper axle mounting beam, and the lower cover and supporting profile significantly enhance the bending resistance between the empty spring support and the upper axle mounting beam. The mounting surface of the upper longitudinal beam's mounting structure is small relative to the channel surface, minimizing the width of the through-hole. Mounting bolts can be removed and installed from outside the vehicle, eliminating the need for an internal inspection hatch.

[0055] The contents illustrated in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent modifications of the present invention by those skilled in the art shall fall within the scope defined by the claims attached to this application.

Claims

1. A train axle connection unit, comprising a goose-shaped beam (1) symmetrically arranged across two crossbeams (3), a longitudinal beam (2) being arranged between the two crossbeams (3), the goose-shaped beam (1) comprising a goose head (11), a goose trunk (12), a goose wing (13), and an upper longitudinal beam (14) between the two goose wings (13), the goose-shaped beam (1) comprising a lower cover plate (115), a cylinder (121) for placing an air spring being arranged in the goose trunk (12), and characterized in that: The lower cover plate (115) includes an L-shaped first lower cover plate (1151) and second lower cover plates (1152) arranged on both sides of the first lower cover plate (1151); the cylinder (121) is arranged on the horizontal surface of the first lower cover plate (1151); the horizontal surface of the cylinder (121) extends from the end of the goose head (11) to the top of the upper longitudinal beam (14); the vertical surface of the first lower cover plate (1151) is connected to the upper longitudinal beam (14); A supporting profile (124) is provided above the upper longitudinal beam (14) and is located inside the goose trunk (12) and is connected to the upper longitudinal beam (14) and the cylinder (121); The supporting profile (124) extends upward from the upper longitudinal beam (14) along the first lower cover plate (1151) to the cylinder (121), and is connected to the side wall of the cylinder (121); the supporting profile (124) is a U-shaped cross-section profile with an L-shaped notch, and the L-shaped notch cooperates with the right-angle portion of the first lower cover plate (1151).

2. The train axle connection unit according to claim 1, characterized in that: A plurality of ribs connected to the cylinder (121) are provided in the goose-shaped beam (1); the ribs include a first rib (114) provided inside the goose head (11) and a second rib (123) connected to the side wall of the cylinder (121) and extending downward along the goose body (12); one end of the first rib (114) is connected to the side wall of the cylinder (121), and the other end extends to the front end of the goose head (11); the second rib (123) is S-shaped and connected to the side wall of the cylinder (121); the ribs also include a third rib (125) provided between the two cylinders (121) and a fourth rib (134) provided inside the goose wing (13).

3. The train axle connection unit according to claim 1, characterized in that: The goose trunk (12) comprises a first vertical plate (122) connected to the side wall of the cylinder (121) and extending downward along the goose trunk (12) to the bottom end of the goose wing (13); a second vertical plate (126) arranged on the opposite side of the first vertical plate (122); and a third vertical plate (127) arranged between the upper longitudinal beam (14) and the second lower cover plate (1152); The second vertical plate (126) is arranged above the upper longitudinal beam (14).

4. The train axle connection unit according to claim 1, characterized in that: The goose wing (13) comprises a side cover plate (131), an inner cover plate (132) and an outer cover plate (133).

5. The train axle connection unit according to claim 1, characterized in that: The upper longitudinal beam (14) longitudinally penetrates the connection position between the goose wing (13) and the goose trunk (12).

6. The train axle connection unit according to claim 1, characterized in that: The upper longitudinal beam (14) comprises a mounting beam (14a) located in the middle of the upper longitudinal beam (14) for mounting the axle ball joint (4), and a plurality of ribs (142) are provided inside the mounting beam (14a).

7. The train axle connection unit according to claim 6, characterized in that: Two pairs of mounting palms (141) are provided at the lower portion of the mounting beam (14a), and an axle ball joint (4) is installed in the middle portion of each pair of mounting palms (141); the mounting palms (141) include a mounting surface (1411), a nut mounting surface (1412), and a stop surface (1413) for preventing the nut (5) from rotating; the middle section of the mounting beam (14a) is cross-shaped.

8. The train axle connection unit according to claim 6, characterized in that: A placement groove (15) is provided on the mounting beam (14a), and the axle ball joint (4) is arranged in the placement groove (15); mounting holes (151) are provided on both sides of the placement groove (15), and a nut compartment (152) is provided on the inner side of the mounting beam (14a) corresponding to the mounting holes (151).

9. A train, characterized in that: It comprises the train axle connection unit as described in any one of claims 1-8.

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