A bearing composite type brake mounting seat

Abstract

The application provides a bearing composite brake mounting seat, one end of which is butt welded with a cross beam, and the other end is butt welded with a side beam, belonging to a part of a bogie frame main body structure, and plays a bearing role between the cross beam and the side beam. Two basic brake units are installed on each brake hanger, and the brake hanger is an integral structure spanning two cross beams, and plays a role of longitudinally strengthening the connection of the two cross beams and transversely bearing the force from the transverse stop. The brake hanger provides a force point for the installation of the transverse stop, and other structures do not need to be designed to bear the force of the transverse stop. The brake hanger provides a mounting interface for the brake unit, and the brake unit is installed in a 4-point hanging mode.

Description

Technical Field

[0001] This invention relates to the field of railway technology, and more particularly to a load-bearing composite brake mounting bracket suitable for short-wheelbase meter-gauge hydraulic transmission bogies. Background Technology

[0002] Meter-gauge railways refer to tracks with a gauge of 1000mm. Meter-gauge lines are widely distributed in countries and regions of South Asia, Southeast Asia, Africa, and South America. Due to various reasons such as economics, technology, and infrastructure, the rail transit vehicles commonly used in these countries and regions are mainly diesel locomotives and diesel multiple units (DMUs). To address the challenges of lightweight bogies and limited space layout in special operating environments such as those without power or with non-standard gauge tracks, a load-bearing composite brake mounting base needs to be designed.

[0003] Existing technical solution 1

[0004] Currently, subway vehicles in the industry typically use seamless steel pipes as crossbeams. The crossbeams are connected to the side beams via welding to the brake hangers. Box-type longitudinal beams are used to reinforce the crossbeams and aid in load-bearing. See details... Figure 1 .

[0005] Currently, the industry's technical solutions involve each brake hanger suspending one brake unit, using a four-point suspension method for fixation. The brake hanger is butt-welded to the crossbeam via a long oval weld; the brake hanger is welded to the side beam via four long welds, and the interface between the side beam and the brake hanger adopts a box-like structure; both ends of the longitudinal beam are connected to two crossbeams respectively, and the longitudinal beam adopts a box-like structure, welded to the crossbeam via four straight welds.

[0006] shortcoming:

[0007] (1) The brake hanger has a single function, only having the function of suspending the brake hanger and the load-bearing function of part of the frame;

[0008] (2) It is relatively heavy, with a single brake hanger weighing about 70kg;

[0009] (3) A separate longitudinal beam needs to be designed to ensure the strength of the frame and add weight.

[0010] Technical Solution 2 of the Existing Technology

[0011] Currently, some subway vehicles in the industry also employ side-mounted braking unit technology. This method requires welding a mounting plate under the side beam as a bolt fixing point. The braking unit is then suspended from the bogie frame at four points using four brake bolts. See details. Figure 2 .

[0012] The braking unit is suspended from the bogie frame at four points by four braking bolts. Three of the bolts pass through the seat plate to fix the braking unit, and one bolt passes through the frame to fix the braking unit. The seat plate and the frame are welded together by a long weld seam. Multiple stiffening plates are also provided between the frame and the seat plate for reinforcement.

[0013] shortcoming

[0014] (1) The brake hanger has a single function, only having the function of suspending the brake hanger;

[0015] (2) A separate longitudinal beam needs to be designed to ensure the strength of the frame and add weight. Summary of the Invention

[0016] In response to the aforementioned technical problems, an integrally cast load-bearing composite brake mounting base structure is provided, which is suitable for short-wheelbase meter-gauge hydraulic transmission bogies. This solves the problem of insufficient space for the arrangement of bogie crossbeams, side beams, and brake units caused by the reduction in wheelbase.

[0017] The technical means employed in this invention are as follows:

[0018] A load-bearing composite brake mounting base, comprising:

[0019] A first connector, a second connector, and transverse and longitudinal load-bearing structures disposed between the first connector and the second connector;

[0020] The front end faces of the first and second connectors are side beam connection structures for fixed connection with the side beam, and the rear end faces of the first and second connectors are cross beam connection structures for connection.

[0021] Both the first and second connectors have a brake unit mounting structure for detachable assembly with the brake unit in their lateral outward extensions away from the central axis of the lateral and longitudinal load-bearing structures.

[0022] Furthermore,

[0023] The aforementioned transverse and longitudinal load-bearing structures are connected to the beam connection structure side of the first and second connecting bodies.

[0024] Furthermore,

[0025] The inner surface of the gap between the first connector and the second connector is machined with a shear-resistant structure for shearing forces.

[0026] Furthermore,

[0027] The surface of the aforementioned braking unit mounting structure is provided with a reinforcing rib, and the reinforcing rib is provided with a weight reduction hole.

[0028] Furthermore,

[0029] The overall structure is formed by casting in one piece.

[0030] In this invention, employing the above technical solution, the crossbeam connecting structure at one end is welded to the crossbeam, and the side beam connecting structure at the other end is welded to the side beam. Once fixed, the overall structure becomes part of the main structure of the bogie frame, serving as a load-bearing element between the crossbeam and the side beam. The overall structure is a distributed left-right structure connected in the middle by beams (lateral and longitudinal load-bearing structures), which serves to longitudinally strengthen the connection between the two crossbeams and laterally bear the force from the lateral stops. It provides a leverage point for the installation of the lateral stops, eliminating the need for additional structures to bear the force of the lateral stops. It provides an installation interface for the braking unit, which is installed using a 4-point suspension.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] 1. It takes into account multiple load-bearing functions, serving as a load-bearing element between the crossbeam and the side beam, reinforcing the connection between the two crossbeams longitudinally, and bearing the lateral force from the lateral stop.

[0033] 2. The integral cast load-bearing composite brake mounting base structure is an integral cast structure, which is convenient for production.

[0034] 3. Versatile functionality: This structure can replace many other structures, eliminating the need for the longitudinal beam connecting the two crossbeams. It combines the traditional two brake hanger structures into an integrated brake hanger, reducing the amount of frame welding.

[0035] 4. Lightweight design: Multiple components, including longitudinal beams, crossbeams, and brake hangers, are integrated into a single structure to achieve weight reduction.

[0036] 5. Saves space and solves the problem of space constraints in the layout of hydraulically driven meter-gauge bogies. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the existing technical solution.

[0039] Figure 2 This is a schematic diagram of the structure of the existing technical solution two.

[0040] Figure 3 This is a schematic diagram of the assembled structure of the present invention.

[0041] Figure 4 This is a schematic diagram of the overall structure of the present invention.

[0042] Figure 5 This is a bottom view of the mounting structure of the braking unit of the present invention.

[0043] In the picture:

[0044] 1-Side beam 2-Brake unit 3-Brake hanger 4-Cross beam 5-Longitudinal beam

[0045] 21-Brake Unit I 22-Frame 23-Seat Plate 24-Fixing Bolts 25-Firming Rib Plate

[0046] 3a- Lateral stop; 3b-Crossbeam I; 31-Brake hanger; 3d-Side beam I

[0047] 41-Brake unit mounting structure; 42-Side beam connection structure; 43-Weight reduction hole; 44-Brake unit mounting structure reinforcing rib; 45-Transverse and longitudinal load-bearing structure; 46-Shear-resistant structure; 47-Crossbeam connection structure; 48-Brake unit mounting bolt hole. Detailed Implementation

[0048] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0052] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0053] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0054] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0055] like Figure 3 , Figure 4 and Figure 5 As shown, the present invention provides a load-bearing composite brake mounting base, comprising:

[0056] A first connector A, a second connector B, and a transverse and longitudinal load-bearing structure 45 disposed between the first connector A and the second connector B;

[0057] The front end faces of the first connector A and the second connector B are side beam connection structures 42 for fixed connection with side beam I3d, and the rear end faces of the first connector A and the second connector B are connection structures 47 for connection with cross beam I3b.

[0058] Both the first connector A and the second connector B are provided with a brake unit mounting structure 41 for detachable assembly with the brake unit, with reference to the central axis of the transverse and longitudinal load-bearing structure 45 and the transverse outward extension portion away from the central axis.

[0059] Furthermore,

[0060] The aforementioned transverse and longitudinal load-bearing structures 45 are connected to the beam connection structure 47 of the first connector A and the second connector B.

[0061] Furthermore,

[0062] The inner surface of the gap between the first connector A and the second connector B is machined with a shear-resistant structure 46 for shearing force.

[0063] Furthermore,

[0064] The surface of the aforementioned brake unit mounting structure 41 is provided with a brake unit mounting structure reinforcing rib 44, and the brake unit mounting structure reinforcing rib 44 is provided with a weight reduction hole 43.

[0065] Furthermore,

[0066] The overall structure is formed by casting in one piece.

[0067] The present invention employing the above technical solution has a crossbeam connecting structure 47 at one end welded to the crossbeam I3b, and a side beam connecting structure 42 at the other end welded to the side beam I3d. After fixing, the structure as a whole becomes part of the main structure of the bogie frame, and plays a load-bearing role between the crossbeam I3b and the side beam I3d.

[0068] The connection end faces of the side beam connection structure 42 and the cross beam connection structure 47 adopt a large end face structure and are butt welded with the box-type structure of the side beam I3d and the cross beam I3b. The box-type structure has stable load-bearing capacity and is suitable for application in larger load-bearing structures.

[0069] The braking unit mounting structure 41 conforms to the structural form of the braking unit. A shear-resistant structure 46 is provided at the rear of the braking unit. After installation, the rear end face of the braking unit fits snugly against the mounting structure 41, assisting in withstanding longitudinal impact and achieving shear resistance for the mounting bolts. Specifically, as shown... Figure 5 As shown, after the braking unit is installed on the braking unit mounting structure 41, the gap between the shear-resistant structure 46 of the braking unit mounting structure 41 and the braking unit is smaller than the gap between the bolt hole and the bolt, thereby achieving the purpose of bolt shear resistance.

[0070] The brake unit mounting structure 41 matches the tread brake unit. When the tread brake unit applies braking force, it mainly bears longitudinal force and vertical force, of which the longitudinal force is much greater than the vertical force. When the two tread brake units installed on the same brake hanger apply braking, the longitudinal forces they bear are in opposite directions. The integrated load-bearing structure can make the longitudinal forces borne by the two tread brake units cancel each other out.

[0071] A transverse and longitudinal load-bearing structure 45 is provided between the two brake unit mounting structures to connect the two brake unit mounting structures. After being welded to the bogie frame, the single piece serves to connect the crossbeam and provide longitudinal load-bearing, while also providing a source of lateral force for the transverse stop.

[0072] In addition, multiple reinforcing ribs 44 are provided in the brake unit mounting structure to ensure the overall structural strength. The placement of the reinforcing ribs 44 takes into account the stress conditions of the mounting base during actual operation, and the reinforcing ribs 44 are arranged according to the stress type. To also consider the need for lightweighting, weight-reducing holes 43 are provided when arranging the reinforcing ribs 44, while ensuring their strength, to achieve the goal of overall lightweighting. The structural composition of a single component is as follows... Figure 4 As shown.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A load-bearing composite brake mounting base, characterized in that, include: A first connector (A), a second connector (B), and a transverse and longitudinal load-bearing structure (45) disposed between the first connector (A) and the second connector (B); The front end faces of the first connector (A) and the second connector (B) are side beam connection structures (42) for fixed connection with side beam I (3d), and the rear end faces of the first connector (A) and the second connector (B) are cross beam connection structures (47) for connection with cross beam I (3b). Both the first connector (A) and the second connector (B) are provided with a brake unit mounting structure (41) for detachable assembly with the brake unit in the outwardly extending portions of the first connector (A) and the second connector (B) with reference to the central axis of the transverse and longitudinal load-bearing structure (45).

2. The load-bearing composite brake mounting bracket according to claim 1, characterized in that, The aforementioned transverse and longitudinal load-bearing structures (45) are connected to the beam connection structure (47) of the first connector (A) and the second connector (B).

3. A load-bearing composite brake mounting bracket according to claim 1 or 2, characterized in that, The inner surface of the gap between the first connector (A) and the second connector (B) is machined with a shear-resistant structure (46) for shearing force.

4. A load-bearing composite brake mounting bracket according to claim 3, characterized in that, The surface of the above-mentioned brake unit mounting structure (41) is provided with brake unit mounting structure reinforcing ribs (44), and the brake unit mounting structure reinforcing ribs (44) are provided with weight reduction holes (43).

5. A load-bearing composite brake mounting bracket according to claim 1, characterized in that, The overall structure is formed by casting in one piece.

6. A load-bearing composite brake mounting bracket according to claim 4, characterized in that, The overall structure is formed by casting in one piece.

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