Tram with equipment suspension arranged outside the frame

Abstract

This invention provides a suspension device for equipment arranged on the outer side of a tram frame, comprising: a connecting seat connected to a side beam of the frame; the connecting seat adopts a double cantilever structure, including a first suspension structure and a second suspension structure integrated on the connecting seat; the first suspension structure and the second suspension structure are connected; the first suspension structure has a first suspension point; and the second suspension structure has a second suspension point; the first suspension point and the second suspension point are used to connect to and suspend equipment. This invention effectively solves the problem of stress concentration at the weld joint where the steel pipe connects to the side beam, and transfers the force to the base material of the lower steel pipe through stiffening plates, thereby improving the reliability of the suspension device.

Description

Technical Field

[0001] This invention relates to the field of railway vehicle manufacturing and assembly technology, and more particularly to a device for suspending equipment arranged on the outside of a tram frame. Background Technology

[0002] In the bogies of trams, due to the compact structural space, some equipment is suspended on the outside of the frame. Due to the limitations of the wheel structure, the distance between the suspension point of the equipment on the outside of the frame and the side beam is relatively long. In this case, a tube beam structure is often welded to the side beam. However, due to the long lever arm and harsh stress conditions, weld fatigue is likely to occur at the weld position, affecting the structural strength.

[0003] There is a type of hanging device, such as Figure 1 As shown, (1) the steel pipe 1 is directly inserted into the side beam, and a transition mounting seat is welded to the outside of the pipe beam. (2) the two stiffening plates 1 and 2 are welded to the steel pipe 1 by circumferential weld. (3) the stiffening plate 2 and 4 are welded to the two stiffening plates 1 and 2. (4) the connecting plate 3 and the connecting plate 2 and 5 are welded to the stiffening plate 2 and 4. It has the following disadvantages:

[0004] (1) The steel pipe welded structure between the side beam and the side beam causes stress to concentrate at the weld, affecting the strength of the main structure of the side beam;

[0005] (2) For example, in the suspension braking unit, the hanger adopts a single steel tube cantilever structure. Under the braking condition, due to the influence of the long lever arm, the structure is subjected to eccentric loading, which affects the structural strength.

[0006] (3) The lower suspension point adopts another cantilever structure, which will generate a long torque. The stress on the suspension seat is severe, and the weld is prone to fatigue cracks, affecting the service life. Summary of the Invention

[0007] To address the aforementioned technical problems, this invention provides a suspension device for equipment arranged on the outer side of a tram frame. Structurally, this invention employs a welded structure of forgings and plates, integrating pipeline mounting bases, thus achieving integration and weight reduction. The suspension device for equipment on the outer side of the frame provided by this invention has a compact and reasonable structure, concentrating the main stress on the forging base material, reducing the impact of the welded plate structure on the lifespan of the side beam body, and improving the reliability and service life of the suspension device.

[0008] The technical means employed in this invention are as follows:

[0009] A device for suspending equipment arranged on the outside of a tram frame includes: a connecting seat connected to a side beam of the frame; the connecting seat adopts a double cantilever structure and includes a first suspension structure and a second suspension structure integrated on the connecting seat; the first suspension structure and the second suspension structure are connected; the first suspension structure has a first suspension point; the second suspension structure has a second suspension point; the first suspension point and the second suspension point are used to connect to and suspend equipment.

[0010] Furthermore, the double cantilever structure is a double cantilever forging structure.

[0011] Furthermore, the first hanging structure is a steel pipe welded to the connecting seat, and the second hanging structure is a transition seat welded to the connecting seat. A connecting stiffener and a hanging seat are welded on the steel pipe, and a first hanging point is formed between the connecting stiffener and the hanging seat. The connecting stiffener is also welded to the transition seat to realize the connection between the steel pipe and the transition seat. The transition seat has a second hanging point. The connecting stiffener, the hanging seat, the steel pipe, and the transition seat constitute a small component welded structure.

[0012] Furthermore, both the connecting stiffener and the hanger have mounting holes for connecting to the equipment, and the transition seat is provided with a mounting base, which has mounting holes for connecting to the equipment.

[0013] Furthermore, after the connecting seat is welded to the side beam of the frame, the welding position between the connecting seat and the steel pipe is processed as a whole.

[0014] Furthermore, the steel pipe and the transition seat form an annular welded structure with the connecting seat.

[0015] Furthermore, it also includes a fixing seat integrated on the connector, which is welded to the connector for fixing the pipeline.

[0016] Furthermore, it also includes stiffening plates, which are welded to the connecting seat and the side beam of the frame.

[0017] Furthermore, the stiffening plate is welded to the connecting seat and the side beam of the frame using circumferential welds, and the connecting seat is welded to the side beam of the frame using single-sided welds.

[0018] Furthermore, the connecting seat adopts a forging structure and forms a welded structure with the side beam of the frame.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. The connecting seat of the present invention adopts a forging structure and a welded structure with the side beam, which can transfer stress from the circumferential weld to the base material.

[0021] 2. The transition seat and steel pipe are welded to the connecting seat. For equipment with two hanging points, the force can be decomposed, reducing the force borne by the steel pipe alone. This allows for a reduction in the diameter of the steel pipe, achieving a weight reduction effect.

[0022] 3. Connecting the steel pipe to the transition seat with connecting stiffeners is equivalent to shortening the cantilever length for the suspended equipment, and transferring the stress of the weld connecting the steel pipe and the transition seat to the transition seat, thereby reducing the fatigue stress value of the weld and ensuring the reliability of the welded structure between the steel pipe and the transition seat.

[0023] 4. The connecting plate is used to connect the connecting seat and the side beam. The connecting seat is equivalent to a box structure, which can improve the load-bearing capacity of the connecting seat, thereby improving the reliability of the structure.

[0024] 5. If pipelines need to be laid out on the equipment outside the frame, the fixing seat of the connector can be used to fix the pipelines, which has the function of functional integration.

[0025] Based on the above reasons, this invention can be widely applied in fields such as equipment suspension in trams. Attached Figure Description

[0026] 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.

[0027] Figure 1 This is a structural schematic diagram of an existing suspension device.

[0028] Figure 2 This is a schematic diagram of the structure of the present invention.

[0029] Figure 3 This is a side view of the present invention.

[0030] In the diagram: 1. Connecting seat; 2. Connecting stiffener; 3. Steel pipe; 4. Hanging seat; 5. Transition seat; 6. Fixed seat; 7. Stiffener. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] In practical application, the existing design is prone to fatigue cracks at the welding points with the side beams, affecting train operation safety. Furthermore, the use of a single steel pipe suspension has a significant impact on the welds at both the upper and lower suspension points. Although stiffening plates are used at the lower suspension point, the forces generated cannot be decomposed from the structure itself as vibration and fatigue conditions intensify, thus structural risks still exist.

[0039] The tram frame external equipment hanging device provided by the present invention effectively solves the stress concentration of the weld at the connection position of the steel pipe and the side beam, and transfers the force to the base material of the lower steel pipe through the stiffening plate, thereby improving the reliability of the hanging device.

[0040] Specifically, the present invention can solve the following problems:

[0041] (1) Implement an installation plan for equipment suspended on the outside of the frame;

[0042] (2) Solve the problem that the excessive length of the single cantilever of the equipment hanging on the outside of the frame generates excessive torque, which leads to excessive fatigue stress in the weld joint at the welding position between the cantilever beam and the side beam, and fatigue cracks are likely to occur after long-term use;

[0043] (3) If the suspended equipment needs to be connected to pipelines, it can solve the problem of insufficient suspension structure and installation space, and facilitate subsequent disassembly and maintenance;

[0044] (4) The use of forging structure reduces the amount of welding and plate welding deformation, thus reducing the impact on the strength of the main structure of the side beam;

[0045] (5) Compared with existing hanging structures, it has advantages such as strong load-bearing capacity, high reliability, simplified structure and lightweight.

[0046] This invention discloses a suspension device for equipment on the outer side of a tram frame, mainly composed of a connecting seat 1, connecting stiffener 2, steel pipe 3, suspension seat 4, transition seat 5, fixing seat 6, and stiffener 7. The steel pipe 3 and transition seat 5 are both welded to the connecting seat 1. The connecting stiffener 2 and suspension seat 4 are welded to the steel pipe 3 at intervals, forming a first suspension point between them. Both the connecting stiffener 2 and suspension seat 4 have mounting holes for connecting to the equipment. The connecting stiffener 2 is also welded to the transition seat 5, connecting the steel pipe 3 and the transition seat 5. The transition seat 5 has a second suspension point and a mounting seat with mounting holes for connecting to the equipment. After assembly welding, the circumferential weld is inspected to ensure product quality. The holes in the suspension seat, connecting stiffener 2, and transition seat 5 are machined as a whole to ensure the final product quality.

[0047] (1) In order to improve the overall strength of the connecting seat 1, the stiffening plate 7 and the connecting seat 1 are welded to the side beam of the frame by a circumferential weld.

[0048] (2) In order to reduce the amount of welding and plate welding deformation, the connecting seat 1 adopts a double cantilever forging structure.

[0049] (3) In order to ensure the welding process, after the connecting seat 1 is welded to the side beam, the welding position between the connecting seat 1 and the steel pipe 3 is processed by integral processing.

[0050] (4) The connecting stiffener 2, the hanger 4, the steel pipe 3 and the transition seat 5 are welded together using a small component structure;

[0051] (5) The welding components and the connecting seat 1 are welded together by a ring weld, wherein the steel pipe 3 and the transition seat 5 are welded together with the connecting seat 1 by a ring weld.

[0052] (6) In order to meet the pipeline layout requirements, the fixing seat 6 is welded to the connecting seat 1 to achieve the effect of functional integration and realize the fixing of the pipeline.

[0053] (7) Perform magnetic particle testing on the welded structure to ensure welding quality.

[0054] (8) Weld the mounting holes of the equipment and then process them as a whole to ensure accurate installation dimensions.

[0055] The present invention has the following beneficial effects:

[0056] (1) The connecting seat 1 adopts a forging structure and a welded structure with the side beam, which can transfer stress from the circumferential weld to the base material; the connecting seat 1 and the frame side beam are welded by a single-sided weld.

[0057] (2) The transition seat 5 and the steel pipe 3 are welded to the connecting seat 1. For the equipment with two hanging points, the force can be decomposed, the force borne by the steel pipe 3 alone can be reduced, the diameter of the steel pipe 3 can be reduced, and the weight reduction effect of lightweighting can be achieved.

[0058] (3) The steel pipe 3 is connected to the transition seat 5 by the connecting stiffener 2. For the hanging equipment, this is equivalent to shortening the cantilever length and transferring the stress of the weld between the steel pipe 3 and the transition seat 5 to the transition seat 5, thereby reducing the fatigue stress value of the weld and ensuring the reliability of the welded structure between the steel pipe 3 and the transition seat 5.

[0059] (4) The stiffening plate 7 is connected to the connecting seat 1 and the side beam. The connecting seat 1 is equivalent to a box structure, which can improve the load-bearing capacity of the connecting seat 1, thereby improving the reliability of the structure.

[0060] (5) If pipelines need to be laid out on the equipment outside the frame, the fixed seat 6 of the connecting seat 1 can be used to fix the pipelines, which has the function of functional integration.

[0061] Key technical points of this invention:

[0062] (1) An integral forged structure connecting seat, having a structural configuration for welding with a side beam.

[0063] (2) The lower hanging point adopts an integral casting structure;

[0064] (3) The connecting stiffener plate and the upper hanging point of the equipment are integrated into a structure;

[0065] (4) Integrated structure of pipeline fixing seat and connecting seat;

[0066] (5) The stiffening plate is connected to the connecting seat and the side beam to improve the structural strength of the hanging seat.

[0067] Pre-protection points of the present invention:

[0068] (1) A structure for a suspension device for equipment arranged on the outside of a tram frame.

[0069] (2) Integrated structure of pipeline layout fixing seat and connecting seat.

[0070] (3) The integrated structure of connecting stiffeners and equipment hanging points.

[0071] (4) Double suspension forging connecting seat structure.

[0072] 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 tramcar with a device suspension device arranged outside the frame, characterized in that, include: The connecting seat (1) is connected to the side beam of the frame. The connecting seat (1) adopts a double cantilever structure, including a first hanging structure and a second hanging structure integrated on the connecting seat (1). The first hanging structure and the second hanging structure are connected. The first hanging structure has a first hanging point, and the second hanging structure has a second hanging point. The first hanging point and the second hanging point are used to connect with the equipment and hang the equipment. The first hanging structure is a steel pipe (3) welded to the connecting seat (1), and the second hanging structure is a transition seat (5) welded to the connecting seat (1). The steel pipe (3) is welded with a connecting stiffener (2) and a hanging seat (4), and a first hanging point is formed between the connecting stiffener (2) and the hanging seat (4). The connecting stiffener (2) is also welded to the transition seat (5) to realize the connection between the steel pipe (3) and the transition seat (5). The transition seat (5) has a second hanging point. The connecting stiffener (2), the hanging seat (4), the steel pipe (3), and the transition seat (5) constitute a small component welding structure. The steel pipe (3) and the transition seat (5) form an annular weld structure with the connecting seat (1); The steel pipe (3) is connected to the transition seat (5) by the connecting stiffener (2), and the stress of the weld connecting the steel pipe (3) and the transition seat (5) is transferred to the transition seat (5); It also includes stiffening plates (7), which are welded to the connecting seat (1) and the frame side beam; The connecting seat (1) adopts a forging structure and forms a welded structure with the side beam of the frame.

2. The equipment suspension device arranged on the outside of the tram frame according to claim 1, characterized in that, The connecting stiffener (2) and the hanger (4) are both provided with mounting holes for connecting to the equipment. The transition seat (5) is provided with a mounting seat, and the mounting seat is provided with mounting holes for connecting to the equipment.

3. The equipment suspension device arranged on the outside of the tram frame according to claim 1, characterized in that, After the connecting seat (1) is welded to the side beam of the frame, the welding position between the connecting seat (1) and the steel pipe (3) is processed by integral processing.

4. The equipment suspension device arranged outside the framework of a tramcar according to claim 1, characterized in that, It also includes a fixing seat (6) integrated on the connector (1), the fixing seat (6) being welded to the connector (1) for fixing the pipeline.

5. The equipment suspension device arranged outside the framework of a tramcar according to claim 1, characterized in that, The stiffening plate (7) is welded to the connecting seat (1) and the side beam of the frame by circumferential weld, and the connecting seat (1) is welded to the side beam of the frame by single-sided weld.

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