High-load-bearing lightweight mounting structure

Abstract

The invention provides a high-load-bearing light-weight mounting structure which is of a box-shaped structure composed of two side plates, a supporting plate, a bottom plate, a front connecting plate and a rear connecting plate, the two side plates are arranged on the left side and the right side in parallel at intervals, the left side and the right side of the supporting plate and the left side and the right side of the front connecting plate are fixedly connected with the front sides of the two side plates, the supporting plate is located below the front side of the front connecting plate, and the bottom plate is located below the rear connecting plate. The left and right sides of the bottom plate are fixedly connected with the bottoms of the two side plates, the bottom of the front connecting plate is connected with the bottom plate, and the left and right sides of the rear connecting plate are fixedly connected with the rear sides of the two side plates; an installation support of the silencer is fixedly connected with the supporting plate, the bottoms of the rear sides of the two side plates are fixedly connected with a suspension beam on the side wall of the locomotive, and the tops of the two side plates are fixedly connected with the side wall. A light-weight structure is adopted to replace an original thick plate full-length welding structure, the influence of a long welding seam on the structure is eliminated, and large welding deformation generated at the welding position of an original installation base due to welding stress is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of railway locomotives, and in particular to a high-load-bearing lightweight installation structure. Background Art

[0002] The power of a diesel locomotive comes from a diesel engine, and the main function of a muffler is to eliminate the vibration noise generated when the diesel engine is working. The muffler is installed above the diesel engine and connected to the exhaust port reserved for the diesel engine to achieve its function of vibration reduction and noise reduction. The muffler for a diesel locomotive weighs about 1.5 tons. The mounting base of the muffler is welded to the cantilever beam of the locomotive side wall. The muffler is bolted to the muffler mounting base through its mounting bracket to achieve the installation of the muffler. The load borne by the muffler mounting base includes not only the dead weight of the muffler and its mounting bracket, but also large vibration loads and fatigue loads. Therefore, the muffler mounting base is mainly composed of thick steel plates and is welded to the side wall of the locomotive body through long and long welds.

[0003] There is a muffler mounting base welded on the side wall of the locomotive, such as Figure 1 As shown, three fillet welds with a welding height of 6 mm are used to weld the side of the cantilever beam on the side wall. The thickness of each welded part of the muffler mounting base is 6 to 8 mm, and each welded part is fully welded.

[0004] The existing muffler mounting base has the following defects:

[0005] 1. In order to meet the requirements of large load-bearing, fatigue resistance and vibration resistance, the muffler mounting base is fully welded. The muffler mounting base and the suspension beam on the side wall are welded with a large weld angle and full weld. This long weld will cause large deformation of the muffler itself and the suspension beam on the side wall.

[0006] 2. The muffler mounting base is made of thick plates, which is heavy, and the structural design does not fully consider the use of structural design to disperse the alternating stress borne by the muffler mounting base.

[0007] 3. The structure of the muffler mounting seat only has the function of vertical adjustment, which cannot meet the requirements of on-site muffler installation, which needs to correspond to both the diesel engine mounting interface and the cantilever beam mounting interface on the side wall. Summary of the invention

[0008] According to the technical problems raised above, a high-load-bearing lightweight installation structure is provided. The present invention adopts a lightweight structure to replace the original thick plate full-welded structure, eliminating the influence of the long weld on the structure and avoiding the large welding deformation of the original mounting seat at the welding point due to welding stress; the installation structure of thin plate group welding can effectively disperse the high stress caused by high load, and the load conduction path is clear and smooth; the structure takes into account the flexible installation of large-mass equipment, and the installed equipment can adjust the installation position from three directions, avoiding rework on site due to mismatch of the installation interface, thereby improving production efficiency.

[0009] The technical means adopted by the present invention are as follows:

[0010] A high-load-bearing lightweight mounting structure is a box-shaped structure consisting of two side panels, a support plate, a bottom plate, a front connecting plate and a rear connecting plate, wherein the two side panels are arranged in parallel and spaced apart on the left and right sides, the support plate and the left and right sides of the front connecting plate are fixedly connected to the front sides of the two side panels, the support plate is located below the front side of the front connecting plate, the left and right sides of the bottom plate are fixedly connected to the bottoms of the two side panels, the bottom of the front connecting plate is connected to the bottom plate, and the left and right sides of the rear connecting plate are fixedly connected to the rear sides of the two side panels; the mounting bracket of the muffler is fixedly connected to the support plate, the rear bottoms of the two side panels are fixedly connected to the cantilever beams on the side walls of the locomotive, and the tops of the two side panels are fixedly connected to the side walls.

[0011] Furthermore, the left and right sides of the support plate, the bottom plate, the front connecting plate and the rear connecting plate are all welded to the two side plates, and the bottom of the front connecting plate is welded to the bottom plate.

[0012] Furthermore, the support plate is fixedly connected to the mounting bracket of the muffler by bolts, the rear bottoms of the two side panels are welded to the cantilever beam on the side wall of the locomotive, and the tops of the two side panels are welded to the side wall.

[0013] Furthermore, the side plates, support plates, bottom plates, front connecting plates and rear connecting plates are all hollow structures.

[0014] Furthermore, the side plate is provided with a through hole and a plurality of weight-reducing holes.

[0015] Furthermore, the two side panels have the same structure and are symmetrically arranged; the front edge of the side panel is V-shaped, and the lower rear side of the side panel has an inverted L-shaped opening, which is connected to the cantilever beam on the locomotive side wall.

[0016] Furthermore, the support plate is provided with multiple rows of long waist holes and a weight-reducing hole in the middle, the weight-reducing hole is arranged between the multiple rows of long waist holes, the multiple rows of waist holes are arranged in parallel and spaced apart, and the mounting bracket of the muffler is connected to one of the rows of waist holes by bolts or bolts and adjustment pads.

[0017] Furthermore, a V-shaped angle is formed between the upper surface of the support plate and the front surface of the front connecting plate, a plurality of weight-reducing holes are provided on the support plate and the front connecting plate, and the top of the front connecting plate is a V-shaped bending structure.

[0018] Furthermore, the rear connecting plate has an arc-shaped structure and is provided with a plurality of weight-reducing holes.

[0019] Furthermore, the side plates, support plates, bottom plates, front connecting plates and rear connecting plates are all made of steel plates, the thickness of the support plates is 12 to 16 mm, and the thickness of the side plates, bottom plates, front connecting plates and rear connecting plates is 4 to 6 mm.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The muffler mounting seat of the present invention has a delicate appearance, and most of the welds are hidden inside the mounting seat; a hollow box-type frame structure (lightweight box-type structure) is adopted to replace the original thick plate fully welded structure, eliminating the influence of the long welds on the structure and avoiding the internal and external welding deformation of the muffler mounting seat; the high stress caused by high loads is effectively dispersed, and the remaining area after hollowing out makes the load conduction path clear and smooth.

[0022] 2. The structure of the present invention takes into account the flexible installation of large-mass equipment, and the installed equipment has a larger adjustment range in the installation position in the horizontal, longitudinal and vertical directions, avoiding rework on site due to mismatching of the installation interface, thereby improving production efficiency.

[0023] Based on the above reasons, the present invention can be widely promoted in the fields of locomotives and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 A schematic diagram of an existing muffler seat and its application solution.

[0026] Figure 2 This is an axonometric view of the muffler mounting base of the present invention.

[0027] Figure 3 It is a cross-sectional view of the muffler mounting seat of the present invention.

[0028] Figure 4 It is a schematic diagram of the connection between the muffler mounting base and the side wall of the present invention.

[0029] Figure 5 It is a schematic diagram of the silencer of the present invention installed on the silencer mounting seat of the side wall (the side wall on the other side is not drawn).

[0030] Figure 6 It is a structural schematic diagram of the side panel of the present invention.

[0031] Figure 7 It is a structural schematic diagram of the support plate of the present invention.

[0032] Figure 8 It is a structural schematic diagram of the base plate of the present invention.

[0033] Fig. 9 It is a structural schematic diagram of the front connecting plate of the present invention.

[0034] Fig.10 It is a structural schematic diagram of the rear connecting plate of the present invention.

[0035] In the figure: 1, side plate; 2, support plate; 3, bottom plate; 4, front connecting plate; 5, rear connecting plate. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0040] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0041] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0042] The present invention provides a high-load-bearing lightweight installation structure, which adopts a lightweight box-shaped structure to replace the original thick plate fully welded structure, eliminates the influence of long and large welds on the structure, and avoids the large welding deformation of the original mounting seat at the welding point due to welding stress; the box-shaped structure welded by thin plates can effectively disperse the high stress caused by high load, and the load conduction path is clear and smooth; the structure takes into account the flexible installation of large-mass equipment, and the installed equipment has a three-way adjustment capability, and the installation position can be adjusted from three directions, avoiding rework on site due to mismatch of installation interfaces, thereby improving production efficiency.

[0043] like Figure 2 , Figure 3 As shown, the muffler mounting base consists of two side panels 1 ( Figure 6 )、Pallet 2( Figure 7 )、base plate 3( Figure 8 )、Front connecting plate 4( Fig. 9 )、Rear connecting plate 5( Fig.10 ) form a box-shaped structure. The two side panels 1 are arranged in parallel and spaced apart on the left and right sides, the left and right sides of the support plate 2 and the front connecting plate 4 are fixedly connected to the front sides of the two side panels 1, the support plate 2 is located below the front side of the front connecting plate 4, and the left and right sides of the bottom plate 3 are fixedly connected to the bottoms of the two side panels 1; the left and right sides of the rear connecting plate 5 are fixedly connected to the rear sides of the two side panels 1; the mounting bracket of the muffler is fixedly connected to the support plate 2, the rear bottom of the two side panels 1 is fixedly connected to the cantilever beam on the side wall of the locomotive, and the top of the two side panels 1 is fixedly connected to the side wall. Specifically, the left and right sides of the support plate 2, the bottom plate 3, the front connecting plate 4 and the rear connecting plate 5 are welded to the two side panels 1, and the bottom of the front connecting plate 4 is welded to the bottom plate 3. The support plate 2 is fixedly connected to the mounting bracket of the muffler by bolts, the rear bottom of the two side panels 1 is welded to the cantilever beam on the side wall of the locomotive, and the top of the two side panels 1 is welded to the side wall. There is a gap between the rear end of the support plate 2 and the front of the front connecting plate 4, and they are not connected. There is a partition opening between the top of the front connecting plate 4 and the rear connecting plate 5, and they are not connected. There is a partition opening between the bottom plate 3 and the bottom of the rear connecting plate 5, and they are not connected. In this box-shaped structure, except for the support plate 2 which is a 12mm thick steel plate, the rest are 5mm steel plates. The side plate 1, support plate 2, bottom plate 3, front connecting plate 4 and rear connecting plate 5 are all hollow structures.

[0044] Figure 2 , Figure 3 The muffler mounting seat shown is an irregular hollow box structure welded by the above five types of plates. According to finite element analysis, the hollow area is the lightweight area, and the non-lightweight area is the load-bearing area. Figure 6 As shown, the load-bearing areas of the two same side panels 1 are dispersedly conducted to the load-bearing areas of the bottom panel 3 and the front connecting panel 4, and then as shown in FIG. Figure 4, the load is redistributed and transmitted to the rear connecting plate 5 and the side walls.

[0045] The larger load is dispersed and transmitted to the side wall through the hollow box structure. Each plate and weld seam that makes up the hollow box, as well as the weld seam connecting the hollow box and the side wall, only bears less than 40% of the load limit. The use of thick steel plates and long weld seams is successfully avoided, lightweight is achieved, and the charm of structural optimization design is demonstrated.

[0046] like Figure 6 As shown, the through hole at b of the side panel 1 is a weight-reducing hole and also a process hole, which can be used for the installation of the limit tooling (existing tooling) during assembly welding. The shape, size and direction of the weight-reducing areas at c, d and e of the side panel 1 (weight-reducing holes are set at c, d and e) are all lightweighted according to the finite element calculation results of the muffler mounting seat. After secondary finite element calculation, the lightweight results meet the application requirements, and the load can be dispersed and transmitted to other related plates through the non-weight-reducing area. The two side panels 1 have the same structure and are arranged symmetrically. In this embodiment, the front edge of the side panel 1 can be a V-shaped edge with an angle greater than 90°, which can be a first edge below the front side and a second edge above the rear side of the bent connection. The left and right sides of the support plate 2 are welded to the inner side of the two side panels 1 near the first edge, and the left and right sides of the front connecting plate 4 are welded to the inner side of the two side panels 1 near the second edge. The bottom of the front connecting plate 4 extends downward to be welded and connected to the upper surface of the bottom plate 3. An inverted L-shaped opening is provided at the lower rear side of the side plate 1, and the opening is welded to the cantilever beam on the side wall of the locomotive.

[0047] like Figure 7 As shown, there are three rows of long waist holes and one weight-reducing hole on the support plate 2. The three rows of waist holes are arranged in parallel and at equal intervals, and can also form two parallel rows of waist holes, with the weight-reducing hole located in the middle of the two rows of waist holes. The three rows of waist holes and the weight-reducing holes are located in the middle of the support plate 2. The length direction of the waist holes is used for longitudinal installation adjustment (the bolts can be moved longitudinally in the waist holes), and the three rows of waist holes are used for lateral installation adjustment (the silencer can be connected to one row of two waist holes on both sides of each mounting bracket through two bolts according to installation requirements). Vertical installation adjustment is achieved by adding an adjustment pad on the upper plane of the support plate 2. The upper surface of the support plate 2 and the front of the front connecting plate 4 can form a V-shaped angle greater than 90°.

[0048] like Figure 8 As shown, there are two weight-reducing holes on the bottom plate 3. The two weight-reducing holes can be oblong holes and are arranged vertically.

[0049] like Fig. 9 As shown, there are two weight-reducing holes on the front connecting plate 4. The two weight-reducing holes are arranged in parallel and spaced apart, and the two weight-reducing holes can be oblong holes. The top of the front connecting plate 4 is a V-shaped bending structure with an angle greater than 90°.

[0050] like Fig.10 As shown, the rear connecting plate 5 has six weight-reducing holes, which are arranged in parallel and at intervals. The rear connecting plate 5 may be an arc-shaped structure.

[0051] like Figure 3 As shown, the support plate 2, the bottom plate 3, and the front connecting plate 4 form a triangular structure, which can improve the stability of the muffler mounting seat. The front connecting plate 4 continues to extend and is connected to the side wall beam, and the bottom plate 3 continues to extend and is connected to the cantilever beam on the side wall. Combined with the side plates 1 on both sides, the load borne by the support plate 2 is dispersed by this structure and evenly transmitted to the side wall. In the present invention, each plate and each weld is evenly loaded, and a weight-reducing hole is opened for lightweight design while avoiding the use of thick plates, retaining the load-bearing material, avoiding the use of long and large welds, and ensuring the high load-bearing capacity of the entire structure.

[0052] like Figure 2 As shown, the two side plates 1 and the support plate 2 are first placed on the limiting fixture for welding, followed by the bottom plate 3, the front connecting plate 4 and the welded structure. All the above welds are inside the box body. Finally, the rear connecting plate 5 is welded to seal the end, and the weld is placed at a on the outside of the box structure.

[0053] A limiting tool is installed on the process hole opened at position b on the two side plates 1, so that the two side plates 1 remain parallel to the support plate 2 after welding, and the outer contours of the two side plates 1 basically overlap after welding, which can control the outer dimensions of the hollow box and ensure its balance when conducting loads.

[0054] By welding in the above order, the weld can be arranged inside the hollow box, making it look exquisite.

[0055] The application of silencer mounting base on locomotive is as follows: Figure 5 There are four silencer mounting bases, two horizontally and two vertically, arranged in a rectangular shape, which together support the silencer.

[0056] The protection points of the present invention are: 1) A technical solution of using a hollow box structure to achieve lightness, disperse large loads, and reduce welding deformation. 2) A technical solution of using the weight reduction holes and process holes in the side plate 1. 3) A technical solution of a support plate that can be adjusted in three directions to install the equipment. 4) A process sequence of assembling and welding the hollow box frame structure.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements 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 high-load-bearing lightweight installation structure, characterized in that: The invention relates to a box-shaped structure composed of two side panels (1), a support plate (2), a bottom plate (3), a front connecting plate (4) and a rear connecting plate (5), wherein the two side panels (1) are arranged in parallel and spaced apart on the left and right sides, the left and right sides of the support plate (2) and the front connecting plate (4) are fixedly connected to the front sides of the two side panels (1), the support plate (2) is located below the front side of the front connecting plate (4), the left and right sides of the bottom plate (3) are fixedly connected to the bottoms of the two side panels (1), the bottom of the front connecting plate (4) is connected to the bottom plate (3), and the left and right sides of the rear connecting plate (5) are fixedly connected to the rear sides of the two side panels (1); the mounting bracket of the muffler is fixedly connected to the support plate (2), the rear bottoms of the two side panels (1) are fixedly connected to the cantilever beam on the side wall of the locomotive, and the tops of the two side panels (1) are fixedly connected to the side wall.

2. The high-load-bearing lightweight installation structure according to claim 1, characterized in that: The left and right sides of the support plate (2), the bottom plate (3), the front connecting plate (4) and the rear connecting plate (5) are all welded to the two side plates (1), and the bottom of the front connecting plate (4) is welded to the bottom plate (3).

3. The high-load-bearing lightweight installation structure according to claim 1, characterized in that: The support plate (2) is fixedly connected to the mounting bracket of the muffler by means of bolts, the rear bottoms of the two side plates (1) are welded to the cantilever beam on the side wall of the locomotive, and the tops of the two side plates (1) are welded to the side wall.

4. The high-load-bearing lightweight installation structure according to claim 1, characterized in that: The side plates (1), the supporting plates (2), the bottom plates (3), the front connecting plates (4) and the rear connecting plates (5) are all hollow structures.

5. The high-load-bearing lightweight mounting structure according to claim 1 or 4, characterized in that: The side plate (1) is provided with a through hole and a plurality of weight-reducing holes.

6. The high-load-bearing lightweight installation structure according to claim 1, characterized in that: The two side panels (1) have the same structure and are symmetrically arranged; the front edge of the side panel (1) is V-shaped, and the lower rear side of the side panel (1) has an inverted L-shaped opening, which is connected to the cantilever beam on the locomotive side wall.

7. The high-load-bearing lightweight mounting structure according to claim 1 or 4, characterized in that: The support plate (2) is provided with a plurality of rows of long waist holes and a weight-reducing hole in the middle, wherein the weight-reducing hole is arranged between the plurality of rows of long waist holes, and the plurality of rows of waist holes are arranged in parallel and at intervals, and the mounting bracket of the muffler is connected to one of the rows of waist holes by means of bolts or bolts and adjustment pads.

8. The high-load-bearing lightweight mounting structure according to claim 1 or 4, characterized in that: A V-shaped angle is formed between the upper surface of the support plate (2) and the front surface of the front connecting plate (4); a plurality of weight-reducing holes are provided on the support plate (2) and the front connecting plate (4); and the top of the front connecting plate (4) is a V-shaped bending structure.

9. The high-load-bearing lightweight mounting structure according to claim 1 or 4, characterized in that: The rear connecting plate (5) is in an arc-shaped structure, and a plurality of weight-reducing holes are provided on the rear connecting plate (5).

10. The high-load-bearing lightweight installation structure according to claim 1, characterized in that: The side plates (1), the support plate (2), the bottom plate (3), the front connecting plate (4) and the rear connecting plate (5) are all made of steel plates. The thickness of the support plate (2) is 12 to 16 mm, and the thickness of the side plates (1), the bottom plate (3), the front connecting plate (4) and the rear connecting plate (5) is 4 to 6 mm.

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