High-vibration-resistance thin-wall case structure

Abstract

The utility model relates to a high-vibration-resistance thin-wall case structure, which comprises a case body consisting of a bottom plate, an upper panel, a front panel, a rear panel, a left panel and a right panel, and a weight load fixedly arranged in the case body, the bottom plate, the upper panel, the front panel, the rear panel, the left panel and the right panel are all composed of webs and frames which are located on the edges of the webs and used for being connected with the adjacent panels, the thickness of the webs is not larger than 1.5 mm, and reinforcing ribs used for enhancing the anti-vibration capacity are evenly distributed in the areas, making contact with weight loads, of the webs. And the reinforcing ribs on each web plate are connected with the frame at the edge of the web plate. According to the distribution characteristics of the weight load of the case, the case panel reinforcing rib force transmission and reinforcing rib accurate distribution method is adopted, the weight load is transmitted out, the structural strength and rigidity are guaranteed, meanwhile, the self weight of the case is kept light, and therefore the requirement for long-time vibration resistance of the case and the requirement for light weight of the case are met.

Description

Technical Field

[0001] The utility model relates to the technical field of chassis, in particular to a highly vibration-resistant and thin-walled chassis structure. Background Art

[0002] As the demand for aircraft performance continues to increase, the vibration and mechanical environment of the airborne chassis is becoming more and more severe, which is manifested in long vibration time and large vibration value. At the same time, the chassis is required to be more and more lightweight. At present, the harsh mechanical environment that the airborne chassis is subjected to is 40 hours of unidirectional vibration (120 hours in three directions) and a vibration value of 17.01g Grms. Faced with such a harsh vibration environment, the mechanical performance design of the chassis structure becomes particularly difficult.

[0003] The chassis can be divided into two systems from the perspective of mechanical structure: (1) the chassis structure system. (2) the weight load system. The chassis structure system includes the front panel, rear panel, top panel, bottom panel, left panel, right panel, and mounting ears of the chassis. It is the main load-bearing structure of the chassis. Whether the chassis can withstand high-intensity and durable vibration mainly depends on the strength and rigidity of the chassis structure system. The weight load system includes the various functional modules, back panels, and other devices inside the chassis. These devices are fixed structures that provide weight loads and transfer the weight loads to the chassis through fasteners.

[0004] For the above difficulties, the traditional design ideas are: (1) increase the wall thickness of the chassis panel, such as the chassis wall thickness is usually set at more than 3mm. (2) replace high-strength materials, such as replacing a magnesium alloy chassis with an aluminum alloy chassis, and directly changing an aluminum alloy chassis to a stainless steel or titanium alloy chassis. These two design ideas can improve the vibration resistance and dynamic performance of the chassis, but will cause the chassis weight to increase significantly, which contradicts the lightweight requirements of the chassis and is difficult to meet. Summary of the invention

[0005] In order to solve the above problems, the utility model provides a highly vibration-resistant, thin-walled chassis with a novel structure, so that the chassis thickness can be set below 1.5 mm under the premise of meeting the high vibration-resistant requirements.

[0006] The purpose of the utility model and the technical problem to be solved are achieved by adopting the following technical solutions. A highly vibration-resistant, thin-walled chassis structure proposed in the utility model includes a box body composed of a bottom plate 1, an upper panel 2, a front panel 3, a rear panel 4, a left panel 5 and a right panel 6 and a weight load fixedly arranged in the box body, wherein the bottom plate, the upper panel 2, the front panel 3, the rear panel 4, the left panel 5 and the right panel 6 are all composed of a web 14 and a frame 15 located at the edge of the web for connecting with adjacent panels, the thickness of the web 14 is not more than 1.5 mm, and the areas where each web contacts the weight load are distributed with reinforcing ribs for enhancing the vibration resistance, and the reinforcing ribs on each web are connected to the frame 15 at its edge.

[0007] The purpose of the utility model and the solution to its technical problems can also be further achieved by adopting the following technical measures.

[0008] The aforementioned highly vibration-resistant, thin-walled chassis structure, the reinforcing ribs include main ribs 12 with larger width dimensions and auxiliary ribs 13 with smaller width dimensions, the main ribs 12 are distributed in areas with larger loads, and the auxiliary ribs are distributed in areas with smaller loads or between adjacent main ribs.

[0009] In the aforementioned highly vibration-resistant, thin-walled chassis structure, the web 14, main ribs 12, auxiliary ribs 13 and frame 15 are integrally formed.

[0010] The aforementioned high vibration-resistant, thin-walled chassis structure has a weight load I distributed on the right side of the chassis, and a weight load II, a weight load III and a weight load IV distributed on the left side, wherein the top of weight load I is connected to the upper panel 2, and the bottom is connected to the bottom plate 1, the upper part of weight load II is connected and fixed to the upper panel 2, the lower part is connected and fixed to the bottom plate 1, the left side is connected and fixed to the left panel 5, and the right side is connected and fixed to the right panel 6; weight load III is fixed on the bottom plate 1; the bottom of weight load IV is supported on the bottom plate 1, and the side is fixed to the right panel 6.

[0011] The aforementioned high vibration-resistant, thin-walled chassis structure has two main ribs 12 arranged in the left area of ​​the bottom plate 1 corresponding to weight loads II, III and IV, a number of auxiliary ribs 13 arranged between adjacent main ribs, and weight load II is connected to the main ribs 12 of the bottom plate 1 by screws; a number of auxiliary ribs are distributed in the right area of ​​the bottom plate 1 corresponding to weight load I, and the web thickness of the bottom plate 1 is 1.5 mm.

[0012] The aforementioned high vibration-resistant, thin-walled chassis structure has two main ribs 12 evenly distributed on the upper panel 2 along the left-right direction, and a number of auxiliary ribs 13 are distributed between adjacent main ribs 12 and between the main ribs 12 and the frame 15. The web thickness of the upper panel 2 is 1 mm.

[0013] The aforementioned high vibration-resistant, thin-walled chassis structure has two main ribs distributed along the front and rear sides of the front end of the left side panel 5, and one main rib distributed along the rear end, and a number of auxiliary ribs are distributed along the front and rear directions between the adjacent main ribs and between the main ribs and the frame 15. The web thickness of the left side panel 5 is 1 mm.

[0014] The aforementioned high vibration-resistant, thin-walled chassis structure, the front end of the right side panel 6 is divided into three parts, upper, middle and lower, from top to bottom by four main ribs, each part is further divided along the front and rear directions by three main ribs and several auxiliary ribs, and the rear end of the right side panel is distributed with one main rib and several auxiliary ribs, and the web thickness of the right side panel is 1mm.

[0015] In the aforementioned highly vibration-resistant, thin-walled chassis structure, the weight load II and the weight load IV are both connected to the right side panel via screws, and the screws are distributed on the main ribs at the front end of the right side panel 6 .

[0016] In the aforementioned highly vibration-resistant, thin-walled chassis structure, the edge of the frame of the bottom plate 1 is fixed with a mounting ear 11 for mounting and fixing.

[0017] Compared with the prior art, the utility model has obvious advantages and beneficial effects. By means of the above technical solution, the utility model can achieve considerable technical progress and practicality, and has wide industrial utilization value, and has at least the following advantages:

[0018] The utility model proposes a highly vibration-resistant, thin-walled chassis structure. This structure, based on the characteristics of the chassis weight load distribution, adopts the method of combined force transmission of the main and auxiliary reinforcing ribs of the chassis panel and precise distribution of the main and auxiliary reinforcing ribs to transmit the weight load, ensuring the structural strength and rigidity while keeping the chassis itself light, thereby achieving the long-term vibration resistance requirements and lightweight requirements of the chassis. Secondly, unlike the prior art that only sets reinforcing ribs on the bottom plate to increase the load-bearing capacity of the box body, the utility model sets reinforcing ribs on multiple panels connected and matched with the weight load to improve the overall load and vibration resistance of the chassis structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model's highly vibration-resistant, thin-walled chassis structure;

[0020] Figure 2 It is a schematic diagram of the weight load distribution of the high vibration-resistant and thin-walled chassis structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the upper panel of the utility model's highly vibration-resistant, thin-walled chassis structure;

[0022] Figure 4 This is a schematic diagram of the bottom plate of the utility model's highly vibration-resistant, thin-walled chassis structure;

[0023] Figure 5 It is a schematic diagram of the left side plate of the highly vibration-resistant and thin-walled chassis structure of the utility model;

[0024] Figure 6 It is a schematic diagram of the right side plate of the high vibration resistance and thin-walled chassis structure of the utility model;

[0025] Figure 7 It is a schematic diagram of weight load transfer of the highly vibration-resistant, thin-walled chassis structure of the utility model.

[0026]

Main component symbol description

[0027] 1: Base plate

[0028] 2: Upper panel

[0029] 3: Front panel

[0030] 4: Rear panel

[0031] 5: Left side panel

[0032] 6: Right side panel

[0033] 7: Functional modules

[0034] 8: First power supply equipment

[0035] 9: Second power supply device

[0036] 10: Back panel

[0037] 11: Install the ears

[0038] 12: Main tendon

[0039] 13: Auxiliary ribs

[0040] 14: Belly

[0041] 15: Border DETAILED DESCRIPTION

[0042] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the high vibration resistance and thin-walled chassis structure proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0043] See also Figure 1-7, which is a schematic diagram of the various parts of the high vibration-resistant, thin-walled chassis structure of the utility model, the chassis structure includes a box body composed of a bottom plate 1, an upper panel 2, a front panel 3, a rear panel 4, a work panel 5 and a right panel 6 connected by screws, and a number of weight loads located in the box body, and each weight load in the box body is limited to the inner wall of the box body, and there is no displacement relative to each panel constituting the box body. The bottom plate 1, the upper panel 2, the front panel 3, the rear panel 4, the work panel 5 and the right panel 6 all include a web 14 and a frame 15 distributed around the web 14 and having a thickness greater than the web 14, wherein the thickness of the web 14 is not greater than 1.5 mm, and the positions of the web 14 of the bottom plate 1, the upper panel 2, the front panel 3, the rear panel 4, the work panel 5 and the right panel 6 that contact the weight load are all distributed with reinforcing ribs, and the strength of the web 14 at this location is enhanced by the reinforcing ribs, thereby enhancing its vibration resistance. Preferably, the web and the reinforcing ribs are integrally formed.

[0044] In this embodiment, the reinforcing ribs include wider main ribs and narrower auxiliary ribs, wherein the main ribs are distributed in areas with greater loads, and the auxiliary ribs are distributed in areas with less loads or between adjacent main ribs, so as to achieve the purpose of weight reduction as much as possible while meeting the vibration resistance of the panel.

[0045] In the embodiment of the utility model, there are 4 weight loads, namely weight load I, which is the functional module 7, weight load II, which is the back plate 10, weight load III, which is the first power supply device 8, and weight load IV, which is the second power supply device 9, wherein the top of the functional module 7 is connected to the upper panel 2, and the bottom is connected to the bottom plate 1. Preferably, the connection between the functional module and the upper panel 2 and the bottom plate 1 is realized through a locking strip. That is, in this embodiment, the functional module 7 mainly transfers the load to the upper panel 2 and the bottom plate 1, and the transfer medium is the locking strip.

[0046] The front end of the functional module 7 is provided with a back plate 10, the upper part of the back plate 10 is connected and fixed to the upper panel 2, the lower part is connected and fixed to the bottom plate 1, the left side is connected and fixed to the left panel 5, and the right side is connected and fixed to the right panel 6. In this embodiment, the connection and fixation of the back plate 10 with the upper panel 2, the bottom plate 1, the left panel 5, and the right panel 6 are all achieved by fixing screws. In this embodiment, the back plate 10 mainly transfers the load to the upper panel 2, the bottom plate 1, and the left and right side panels, and the transfer medium is the fixing screws.

[0047] The bottom plate 1 is also fixed with a second power supply device 9 at the front end of the back plate 10. The second power supply device 9 is fixed to the bottom plate 1 by screws and transmits the load to the bottom plate 1 through the screws. A first power supply device 8 is also fixed to the bottom plate 1 on the right side of the second power supply device 9. The bottom of the first power supply device 8 is fixed to the bottom plate 1 and the side is installed on the right side panel 6. Under the action of gravity, the right side panel is subjected to shear force and the bottom plate 1 is subjected to pressure. The first power supply device 8 transmits the load to the right side panel 6 and the bottom plate 1.

[0048] In this embodiment, the weight load is mainly transferred to the upper panel 2, the bottom plate 1 and the left and right side panels, and the front and rear panels are not the main load-bearing structures. The mounting ears are generally made of high-strength alloy and are small in size, and there are no strength and overweight problems. Therefore, the following mainly explains the anti-vibration design and weight reduction design of the upper and lower panels and the left and right side panels.

[0049] The bottom plate 1 is provided with a plurality of main ribs 12 and auxiliary ribs 13 for enhancing the bearing capacity according to the distribution of the weight load it bears, wherein the area with a larger weight load is provided with the main ribs 12 with a larger width, and the other areas are provided with the auxiliary ribs with a smaller width. In this embodiment, the first power supply device 8, the second power supply device 9 and the back plate 10 are concentratedly distributed at the front end of the left side of the bottom plate 1, so that the weight load carried by this part of the area is relatively large. Therefore, two main ribs 12 extending along the width direction of the bottom plate 1 are distributed at the position where the bottom plate 1 is adapted to the first power supply device 8, the second power supply device 9 and the back plate 10, and a plurality of auxiliary ribs 13 are distributed between the two main ribs 12, wherein both ends of the main ribs 12 and the auxiliary ribs 13 are connected to the frame 15, and preferably, the two main ribs 12 are distributed at the edges at both ends of the area, and the auxiliary ribs 13 are evenly distributed between the two main ribs 12. The area on the rear side of the bottom plate 1 that is adapted to the functional module 7 is evenly distributed with several auxiliary ribs 13 extending along the width direction of the bottom plate, and the auxiliary ribs 13 are connected to the frame 15. The setting of the auxiliary ribs 13 can enhance the load-bearing capacity of the web in this area. And the web wall thickness of the bottom plate 1 is 1.5mm. In this embodiment, there are 4 auxiliary ribs 13, which are evenly distributed along the length direction of the bottom plate, but it is not limited to this. When the chassis structure faces a high-intensity vibration environment, ensuring that the weight load in the box is reasonably and effectively transmitted is a key factor, and it is also a necessary condition for the chassis structure not to be damaged in a vibration environment. The load on the bottom plate 1 mainly comes from weight load I (functional module 7), weight load II (back plate 10), weight load III (first power supply device 8) and weight load IV (second power supply device 9). The load on the bottom plate 1 is relatively severe. Weight load II, weight load III and weight load IV are concentrated on one side of the bottom plate, so two main ribs are set here to enhance the load transfer effect, and auxiliary ribs are evenly set on the other side, and the web thickness is set to 1.5mm to increase the overall rigidity. The load is transferred to the surrounding frame through the main reinforcement and the auxiliary reinforcement. The edge of the frame 15 is fixed with a mounting ear 11 by screws, so that the frame transfers the load to the mounting ear 11 through the screws, and the mounting ear 11 transfers the load to the external structure through the locking structure.

[0050] The load on the upper panel 2 mainly comes from the functional module 7 and the back panel 10. Since the upper panel 2 is not in the direction of gravity load, the stress condition of the upper panel 2 is generally not very severe. Therefore, two main ribs 12 extending in the width direction are evenly distributed on the upper panel 2 of the utility model along its length direction. Along the distribution direction of the two main ribs, a number of auxiliary ribs 13 are evenly distributed between adjacent main ribs 12 and between the main ribs 12 and the frame 15, and the above-mentioned main ribs 12 and auxiliary ribs 13 are connected to the frame 15. The web wall thickness of the upper panel 2 is 1mm. The load borne by the upper panel is mainly borne by the two main ribs, and the auxiliary ribs are secondarily borne. The load is finally transferred to the surrounding frame, and then transferred to other panels by fixing screws. In this embodiment, 5 auxiliary ribs 13 are distributed between adjacent main ribs 12 and between the main ribs 12 and the frame 15, but it is not limited to this.

[0051] The load on the left panel 5 mainly comes from the weight load II. Two main ribs are set on the side close to the weight load II, and one main rib is set on the other side. The two main ribs mainly bear the transferred load and support the rigidity of the panel. The load is finally transferred to the surrounding frame by the main ribs and auxiliary ribs, and then transferred to other panels by fixing screws. Specifically, two main ribs 12 are set along the length (left and right) direction of the panel on the side close to the back plate 10 of the left panel 5, and one main rib 12 is set on the side away from the back plate 10, and a number of auxiliary ribs 13 are evenly distributed between adjacent main ribs 12 and between the main ribs 12 and the frame 15. Preferably, the width of the two main ribs 12 close to the back plate 10 is consistent, and the width of the main ribs on the side away from the back plate 10 is much larger than the width of the other two main ribs 12, and the width of each auxiliary rib 13 is consistent, which is smaller than the width of the main rib 12 with the smallest width. The above-mentioned main ribs 12 and auxiliary ribs 13 are connected to the frame 15. In this embodiment, the web wall thickness of the left panel 5 is 1mm.

[0052] The load on the right side panel 6 mainly comes from the weight load II and the weight load III. Since the weight load III is cantilevered on the right side panel 6, the right side panel 6 is subjected to shear force under the action of gravity, so the stress condition of the right side panel 6 is also relatively severe. Therefore, when the right side panel 6 is provided with reinforcing ribs, four main ribs 12 are provided on the side of the weight load II and the weight load III along the height direction of the weight load II and the weight load III (along the up and down direction of the chassis), and these four main ribs 12 are all connected to the frame 15. The above four main ribs 12 divide the area of ​​the right side panel 6 close to the weight load II and the weight load III into three parts, namely, upper, middle and lower, and each part is provided with three main ribs 12 along the front and back direction of the chassis, and a number of auxiliary ribs are distributed between these three main ribs 12, and these three main ribs and the auxiliary ribs distributed between these three main ribs are connected to the main ribs on both sides of the upper and lower sides of the area where they are located. The mounting screws of the weight load II and the weight load III are all distributed on the above main ribs 12, ensuring that the weight load is transmitted more effectively. The side of the right panel 6 away from the weight load II and the weight load III is provided with a main rib 12 extending along the height direction of the chassis and a plurality of auxiliary ribs 13 distributed on both sides of the main rib 12, and the main rib 12 and the auxiliary rib 13 on this side are connected to the frame 15. As a result, the load transmitted from the weight load II and the weight load III is mainly borne by the main rib, and the auxiliary rib is secondarily borne. The load is finally transmitted to the surrounding frame, and then transmitted to other panels by the fixing screws. The web wall thickness of the right panel 6 is 1mm.

[0053] The chassis structure of the utility model adopts the main and auxiliary reinforcing ribs to jointly transmit force when designing the chassis, and accurately distributes the positions of the reinforcing ribs according to the characteristics of the weight load distribution of the chassis. By rationally arranging the reinforcing ribs on multiple panels connected to the weight load, the single force of the bottom plate is reduced, and the weight load is transmitted, so that the overall force and force transmission of the chassis are reasonable and effective, and the structural strength and rigidity are ensured while the weight of the chassis itself remains light, meeting the lightweight requirements of users. Preferably, the structural design of each panel is carried out according to this embodiment, and after verification by the vibration test, the chassis can pass the 40h endurance vibration test.

[0054] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A highly vibration-resistant, thin-walled chassis structure, comprising a box body consisting of a bottom plate, an upper panel, a front panel, a rear panel, a left panel, and a right panel, and a weight load fixedly arranged in the box body, characterized in that: The bottom plate, upper panel, front panel, rear panel, left panel and right panel are all composed of a web and a frame located at the edge of the web for connecting with adjacent panels. The thickness of the web is not more than 1.5 mm, and each web is distributed with reinforcing ribs for enhancing vibration resistance in the area where it contacts the weight load, and the reinforcing ribs on each web are connected to the frame at its edge.

2. The highly vibration-resistant, thin-walled chassis structure according to claim 1, characterized in that: The reinforcing ribs include main ribs with a larger width and auxiliary ribs with a smaller width. The main ribs are distributed in areas with a larger load, and the auxiliary ribs are distributed in areas with a smaller load or between adjacent main ribs.

3. The highly vibration-resistant, thin-walled chassis structure according to claim 2, characterized in that: The web, main ribs, auxiliary ribs and frame are integrally formed.

4. The highly vibration-resistant, thin-walled chassis structure according to any one of claims 1 to 3, characterized in that: The right area of ​​the chassis is distributed with weight load I, and the left area is distributed with weight load II, weight load III and weight load IV, wherein the top of weight load I is connected to the upper panel and the bottom is connected to the bottom plate, the upper part of weight load II is connected and fixed to the upper panel, the lower part is connected and fixed to the bottom plate, the left side is connected and fixed to the left panel, and the right side is connected and fixed to the right panel; weight load III is fixed on the bottom plate; the bottom of weight load IV is supported on the bottom plate, and the side is fixed to the right panel.

5. The highly vibration-resistant, thin-walled chassis structure according to claim 4, characterized in that: Two main reinforcements are arranged in the left area of ​​the bottom plate corresponding to weight load II, weight load III and weight load IV, a number of auxiliary reinforcements are arranged between adjacent main reinforcements, and weight load II is connected to the main reinforcement of the bottom plate by screws; a number of auxiliary reinforcements are distributed in the right area of ​​the bottom plate corresponding to weight load I, and the web thickness of the bottom plate is 1.5 mm.

6. The highly vibration-resistant, thin-walled chassis structure according to claim 5, characterized in that: The upper panel has main ribs evenly distributed along the left-right direction, and a number of auxiliary ribs are distributed between adjacent main ribs and between the main ribs and the frame. The web thickness of the upper panel is 1 mm.

7. The highly vibration-resistant, thin-walled chassis structure according to claim 6, characterized in that: The front end of the left panel has two main ribs distributed along the front and rear direction, the rear end has one main rib, and several auxiliary ribs are distributed along the front and rear direction between the adjacent main ribs and between the main ribs and the frame. The web thickness of the left panel is 1mm.

8. The highly vibration-resistant, thin-walled chassis structure according to claim 7, characterized in that: The front end of the right side panel is divided into three parts from top to bottom by main reinforcement, each part is separated by three main reinforcements and several auxiliary reinforcements along the front and rear direction. The rear end of the right side panel is distributed with one main reinforcement and several auxiliary reinforcements. The web thickness of the right side panel is 1mm.

9. The highly vibration-resistant, thin-walled chassis structure according to claim 8, characterized in that: The weight load II and the weight load IV are both connected to the right side panel through screws, and the screws are distributed on the main reinforcement at the front end of the right side panel.

10. The highly vibration-resistant, thin-walled chassis structure according to claim 9, characterized in that: The edge of the bottom plate frame is fixed with a mounting ear for mounting and fixing.

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