Reliability test fixture and reliability test device for shipboard cabinets

Abstract

The present invention relates to a reliability test fixture and a reliability test device for a marine cabinet. The reliability test fixture for the marine cabinet includes a transition plate, a cross beam and a support frame. The transition plate is used to be installed on a vibration table and is used to be connected to the bottom wall of the marine cabinet. There are more than two support frames, and the more than two support frames are arranged on the transition plate side by side at intervals. There are two cross beams, and one side edges of the more than two support frames are all connected to one of the cross beams, and the other side edges of the more than two support frames are all connected to the other cross beam. One of the cross beams is used to be connected to the back surface of the marine cabinet. The number of support frames installed on the transition plate can be determined according to the number of marine cabinets, and more than two marine cabinets can be synchronously installed on the transition plate, so that more than two marine cabinets can be subjected to reliability tests simultaneously, the test time can be reduced, the test efficiency can be improved, and the expandability is relatively strong.

Description

Technical Field

[0001] The present invention relates to a test fixture, and particularly to a reliability test fixture and a reliability test device for a marine cabinet. Background Art

[0002] Reliability test refers to measuring and verifying the reliability of a product through tests. It is an important means to test whether the product meets the reliability index requirements and is also an important means to control the product quality. Its test plan is closely related to the number of products, technical indicators, and test plan number, and the technical indicators and test plan number are generally related to the product technical maturity. The reliability test fixture is used to install the product to be tested and simulate the installation device of the product in the actual use scenario, and is the connection hub between the product and the reliability test chamber.

[0003] Traditionally, a special fixture is used for the reliability test of a marine cabinet. Since the structural space size of the special fixture generally only adapts to the installation of one marine cabinet. When there are more marine cabinets that need to be subjected to reliability tests, generally, multiple special fixtures are used to conduct reliability tests on multiple marine cabinets respectively, or multiple marine cabinets are sequentially subjected to reliability tests in sequence. This will cause the occupation of more test facilities and scientific research personnel resources, even lengthen the test time, and at the same time lead to a large increase in test costs. Summary of the Invention

[0004] Based on this, it is necessary to overcome the defects of the prior art and provide a reliability test fixture and a reliability test device for a marine cabinet, which can conduct reliability tests on two or more marine cabinets simultaneously, can reduce the test time, and can improve the test efficiency.

[0005] The technical solution is as follows: A reliability test fixture for a marine cabinet, the reliability test fixture for the marine cabinet includes: a transition plate, the transition plate is used to be installed on a vibration table, and the transition plate is used to be connected to the bottom wall of the marine cabinet; a support frame, there are two or more support frames, and two or more support frames are arranged on the transition plate side by side at intervals; and a cross beam, there are two cross beams, one side edges of two or more support frames are all connected to one of the cross beams, and the other side edges of two or more support frames are all connected to the other cross beam, and one of the cross beams is used to be connected to the back of the marine cabinet.

[0006] The above-mentioned reliability test fixture for a marine cabinet can determine the number of support frames installed on the transition plate according to the number of marine cabinets, and synchronously install two or more marine cabinets on the transition plate, can conduct reliability tests on two or more marine cabinets simultaneously, can reduce the test time, and can improve the test efficiency, and has strong expandability.

[0007] In one embodiment, a plurality of first mounting holes are provided on the transition plate, and the transition plate is fixedly mounted on the vibration table through the first mounting members passing through the first mounting holes.

[0008] In one embodiment, the first mounting hole is a counterbore.

[0009] In one embodiment, a plurality of second mounting holes are provided on the transition plate, and the transition plate is connected to the bottom wall of the shipboard cabinet through the second mounting members passing through the second mounting holes; a plurality of third mounting holes are provided on the cross beam, and the cross beam is connected to the back of the shipboard cabinet through the third mounting members passing through the third mounting holes.

[0010] In one embodiment, the transition plate, the support frame and the cross beam are all made of magnesium alloy plate, stainless steel plate, iron plate, copper plate or aluminum plate.

[0011] In one embodiment, the support frame includes a plurality of frame beams and a plurality of reinforcing beams; the frame beams are sequentially connected end to end to enclose a frame body, and the reinforcing beams are connected to the frame beams and are located inside the frame body.

[0012] In one embodiment, the frame beam and the reinforcing beam both include a first plate body and a second plate body, and the first plate body and the second plate body are connected to form an L-shaped beam.

[0013] In one embodiment, adjacent frame beams are connected by welding, the frame beam and the reinforcing beam are connected by welding, and adjacent reinforcing beams are connected by welding; the frame body is a square frame body; a plurality of the reinforcing beams are arranged in a "rice" shape, an "X" shape or a "cross" shape inside the frame body.

[0014] In one embodiment, the cross beam includes a third plate body, a fourth plate body and a fifth plate body, the fourth plate body and the fifth plate body are respectively connected to two sides of the third plate body, and the third plate body, the fourth plate body and the fifth plate body enclose a groove body.

[0015] In one embodiment, the bottom of the support frame is connected to the transition plate by welding, and the cross beam is connected to the side of the support frame by welding.

[0016] A reliability test device includes the reliability test fixture of the shipboard cabinet as described above, and further includes a vibration table and a sensor, the transition plate is mounted on the vibration table; the sensor is mounted on the reliability test fixture.

[0017] The above-mentioned reliability test device can determine the number of support frames installed on the transition plate according to the number of shipborne cabinets, synchronously install more than two shipborne cabinets on the transition plate, can conduct reliability tests on more than two shipborne cabinets simultaneously, can reduce the test time, improve the test efficiency, and has strong expandability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Structural schematic diagram of the reliability test fixture for shipborne cabinets according to an embodiment of the present invention;

[0021] Figure 2 For Figure 1 Enlarged structural schematic diagram at A;

[0022] Figure 3 For Figure 1 Enlarged structural schematic diagram at B;

[0023] Figure 4 One perspective view of the reliability test fixture for shipborne cabinets according to an embodiment of the present invention;

[0024] Figure 5 Another perspective view of the reliability test fixture for shipborne cabinets according to an embodiment of the present invention;

[0025] Figure 6 Another perspective view of the reliability test fixture for shipborne cabinets according to an embodiment of the present invention;

[0026] Figure 7 Exploded schematic diagram of the reliability test fixture for shipborne cabinets according to an embodiment of the present invention;

[0027] Figure 8 Structural schematic diagram of the reliability test device for shipborne cabinets according to an embodiment of the present invention.

[0028] 10. Reliability test fixture; 11. Transition plate; 111. First mounting hole; 12. Cross beam; 121. Third plate body; 122. Fourth plate body; 123. Fifth plate body; 13. Support frame; 131. Frame beam; 132. Reinforcing beam; 133. First plate body; 134. Second plate body; 20. Shaker; 30. Shipboard cabinet; 40. Sensor. Detailed implementation manner

[0029] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manner of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0035] Generally speaking, the load-bearing capacity of traditional special fixtures is relatively strong, far exceeding the requirements of the reliability test of shipboard cabinets. Specifically, the vibration frequency that traditional special fixtures can achieve reaches 500 HZ, and the vibration frequency of the reliability test of shipboard cabinets is 4 Hz to 200 Hz according to the requirements of GJB 899A-2009 "Reliability Qualification and Acceptance Tests". That is to say, the traditional special fixture has a much higher vibration frequency than the highest vibration frequency specified by the reliability test requirements. Therefore, the traditional fixture body is relatively bulky, inconvenient to adjust and install according to the different sizes of shipboard cabinets, and not suitable for the simultaneous test of multiple shipboard cabinets.

[0036] Based on this, referring to Figure 1 and Figure 8 , Figure 1 shows a schematic structural diagram of a reliability test fixture 10 for a shipboard cabinet in an embodiment of the present invention, Figure 8 shows a schematic structural diagram of a reliability test device for a shipboard cabinet 30. The reliability test fixture 10 for a shipboard cabinet provided by an embodiment of the present invention includes a transition plate 11, a cross beam 12 and a support frame 13. The transition plate 11 is used to be installed on the vibration table 20, and the transition plate 11 is used to be connected to the bottom wall of the shipboard cabinet 30. There are two or more support frames 13, and the two or more support frames 13 are arranged side by side and spaced apart on the transition plate 11. There are two cross beams 12, one side of each of the two or more support frames 13 is connected to one of the cross beams 12, and the other side of each of the two or more support frames 13 is connected to the other cross beam 12. One of the cross beams 12 is used to be connected to the back of the shipboard cabinet 30.

[0037] During the reliability test, if there is one marine cabinet 30 to be tested, there are two support frames 13 installed on the transition plate 11. The two support frames 13 are arranged side by side and spaced apart on the transition plate 11. The marine cabinet 30 is located between the two support frames 13, and the back of the marine cabinet 30 is connected to one of the cross beams 12. In this way, the reliability test fixture 10 for the marine cabinet can clamp the marine cabinet 30 to conduct the reliability test. If there are two marine cabinets 30 to be tested, the corresponding number of support frames 13 installed on the transition plate 11 is three. The three support frames 13 are arranged side by side and spaced apart on the transition plate 11. The two marine cabinets 30 are respectively located in the two spaced spaces formed by the three support frames 13, and the back of the marine cabinet 30 is connected to one of the cross beams 12. In this way, the reliability test fixture 10 for the marine cabinet can clamp the two marine cabinets 30 to conduct the reliability test. Thus, if there are n marine cabinets 30 (n is a natural number), the corresponding number of support frames 13 installed on the transition plate 11 is n + 1. The n marine cabinets 30 are respectively located in the n spaced spaces formed by the n + 1 support frames 13, and the reliability test fixture 10 for the marine cabinet clamps the n marine cabinets 30 to conduct the reliability test. In addition, through test analysis, when the above-mentioned reliability test fixture 10 for the marine cabinet clamps more than two marine cabinets 30, the achieved vibration frequency conforms to 4 Hz to 200 Hz, meeting the test requirements.

[0038] The above-mentioned reliability test fixture 10 for the marine cabinet can determine the number of support frames 13 installed on the transition plate 11 according to the number of marine cabinets 30, and synchronously install more than two marine cabinets 30 on the transition plate 11, enabling the simultaneous reliability test of more than two marine cabinets 30, reducing the test time, improving the test efficiency, and having strong expandability.

[0039] Please refer to again Figure 2 and Figure 8 , Figure 2 which shows Figure 1Schematic diagram of the enlarged structure at A. Further, a plurality of first mounting holes 111 are provided on the transition plate 11, and the transition plate 11 is fixedly mounted on the vibration table 20 by the first mounting members passing through the first mounting holes 111. Specifically, the first mounting holes 111 are arranged in an array on the transition plate 11, and the vibration table 20 is provided with mounting holes corresponding to the positions of the first mounting holes 111. The number of the first mounting holes 111 on the transition plate 11 is more than that of the mounting holes on the vibration table 20. During the mounting operation, select the first mounting holes 111 corresponding to the positions of the mounting holes on the vibration table 20, and use a plurality of first mounting members to pass through the first mounting holes 111 and the mounting holes of the vibration table 20 to fixedly mount the transition plate 11 on the vibration table 20, which can realize the stable setting of the transition plate 11 on the vibration table 20, the fixing effect is relatively stable, and the installation operation of the reliability test fixture 10 of the shipboard cabinet on the vibration table 20 is simple.

[0040] Further, the first mounting holes 111 are counterbores. In this way, after the first mounting members pass through the first mounting holes 111 to fixedly mount the transition plate 11 on the vibration table 20, the heads of the first mounting members are located in the counterbores and will not protrude to the surface of the transition plate 11, so that there is no gap between the bottom surface of the shipboard cabinet 30 and the surface of the transition plate 11. Furthermore, the reliability test fixture 10 of the shipboard cabinet can better transfer the vibration load to the shipboard cabinet 30.

[0041] In one embodiment, a plurality of second mounting holes (not shown in the figure) are provided on the transition plate 11, and the transition plate 11 is connected to the bottom wall of the shipboard cabinet 30 by the second mounting members passing through the second mounting holes. A plurality of third mounting holes (not shown in the figure) are provided on the cross beam 12, and the cross beam 12 is connected to the back surface of the shipboard cabinet 30 by the third mounting members passing through the third mounting holes.

[0042] Specifically, before mounting the shipboard cabinet 30 on the reliability test fixture 10 of the shipboard cabinet, second mounting holes corresponding to the positions of the mounting holes on the bottom wall of the shipboard cabinet 30 are opened on the transition plate 11, and third mounting holes (not shown in the figure) corresponding to the positions of the mounting holes on the back surface of the shipboard cabinet 30 are opened on the cross beam 12, so that the shipboard cabinet 30 can be quickly and stably mounted on the reliability test fixture 10 of the shipboard cabinet. In addition, the installation situation of the shipboard cabinet 30 in actual use can be better simulated, and multiple punching and threading operations can be carried out on the transition plate 11, the side plate or the load-bearing plate for repeated use, thereby accelerating the test process and reducing the manufacturing cost and maintenance cost of the reliability test fixture 10.

[0043] It should be noted that for a general shipboard cabinet 30, there is one mounting hole at each of the four corners on the bottom wall of the shipboard cabinet 30, and there is one mounting hole on the back of the shipboard cabinet 30. Therefore, four second mounting holes are correspondingly provided on the transition plate 11, which respectively correspond to the four mounting holes on the bottom wall of the shipboard cabinet 30 one by one, and one third mounting hole is correspondingly provided on the cross beam 12, which corresponds to the mounting hole on the bottom wall of the shipboard cabinet 30. Of course, there are also cases where there are five or six mounting holes on the bottom wall of the shipboard cabinet 30, and two to four mounting holes on the back of the shipboard cabinet 30. Correspondingly, five or six mounting holes are correspondingly provided on the transition plate 11, which respectively correspond to the mounting holes on the bottom wall of the shipboard cabinet 30 one by one, and two to four mounting holes are correspondingly provided on the cross beam 12, which respectively correspond to the mounting holes on the back of the shipboard cabinet 30 one by one. In this way, the shipboard cabinet 30 can be stably installed on the reliability test fixture 10 of the shipboard cabinet, fully simulating the installation situation of the shipboard cabinet 30 in actual use, and the vibration load of the reliability test can be effectively transmitted to the shipboard cabinet 30, ensuring the test quality and test effect.

[0044] In addition, after aligning the second mounting holes with the mounting holes on the bottom wall of the shipboard cabinet 30, the shipboard cabinet 30 is fixed to the reliability test fixture 10 of the shipboard cabinet with the second mounting parts. After aligning the third mounting holes with the mounting holes on the back of the shipboard cabinet 30, the shipboard cabinet 30 is fixed to the reliability test fixture 10 of the shipboard cabinet with the third mounting parts. The second mounting holes and the third mounting holes are specifically selected as screw holes, and the second mounting parts and the third mounting parts are specifically, for example, screws or bolts, which can improve the connection strength between the shipboard cabinet 30 and the reliability test fixture 10 of the shipboard cabinet, and can effectively transmit the vibration load of the reliability test to the shipboard cabinet 30, ensuring the test quality and test effect.

[0045] In one embodiment, the first mounting part, the second mounting part and the third mounting part can all be screws, bolts, pins, rivets, etc. The first mounting hole 111 is a mounting hole adapted to the first mounting part, the second mounting hole is a mounting hole adapted to the second mounting part, and the third mounting hole is a mounting hole adapted to the third mounting part.

[0046] In one embodiment, the transition plate 11, the support frame 13 and the cross beam 12 are all made of magnesium alloy plate, stainless steel plate, iron plate, copper plate or aluminum plate. In this embodiment, the transition plate 11, the support frame 13 and the cross beam 12 are all made of magnesium alloy plate. With the lightweight design and manufacture of the magnesium alloy plate, the weight of the reliability test fixture 10 of the shipboard cabinet is minimized to the greatest extent, more shipboard cabinets 30 can be installed for testing, and the test time and test cost can be reduced.

[0047] Please refer to Figure 2 and Figure 3 , Figure 3 which shows Figure 1Schematic diagram of the enlarged structure at B. In one embodiment, the support frame 13 includes a plurality of frame beams 131 and a plurality of reinforcing beams 132. The frame beams 131 are connected end to end in sequence to enclose a frame body, and the reinforcing beams 132 are connected to the frame beams 131 and are located inside the frame body. By connecting the reinforcing beams 132 to the frame beams 131, the reinforcing beams 132 can enhance the structural strength of the frame body. At the same time, the material used for the reliability test fixture 10 of the above-mentioned shipboard cabinet is less and the cost is lower.

[0048] Please refer to Figure 2 and Figure 3 , in one embodiment, both the frame beam 131 and the reinforcing beam 132 include a first plate body 133 and a second plate body 134, and the first plate body 133 and the second plate body 134 are connected to form an L-shaped beam. Specifically, the first plate body 133 and the second plate body 134 are an integrated structure, for example, formed by one-step extrusion and stretching, or can also be an integrated structure formed by welding.

[0049] Please refer to Figures 4 to 6 , Figures 4 to 6 respectively show three perspective views of the reliability test fixture 10 of the shipboard cabinet. In one embodiment, the adjacent frame beams 131 are connected by welding, the frame beam 131 and the reinforcing beam 132 are connected by welding, and the adjacent reinforcing beams 132 are connected by welding. Optionally, the frame body is a square frame body. In addition, a plurality of reinforcing beams 132 are arranged in a "rice" shape, an "X" shape or a "cross" shape inside the frame body.

[0050] Please refer to again Figure 2 and Figure 3 , in one embodiment, the cross beam 12 includes a third plate body 121, a fourth plate body 122 and a fifth plate body 123. The fourth plate body 122 and the fifth plate body 123 are respectively connected to both sides of the third plate body 121, and the third plate body 121, the fourth plate body 122 and the fifth plate body 123 enclose a groove body. Specifically, the third plate body 121, the fourth plate body 122 and the fifth plate body 123 are an integrated structure, for example, formed by one-step extrusion and stretching, or can also be an integrated structure formed by welding. In addition, when the third plate body 121 is attached to the side of the support frame 13, it is convenient to be detachably connected to the side of the support frame 13, and the connection structure is relatively stable; in addition, after the fourth plate body 122 and the fifth plate body 123 are respectively connected to the third plate body 121, the structural strength of the cross beam 12 can be ensured. For shipboard cabinets 30 of different heights and sizes, the installation height of the cross beam 12 on the support frame 13 is different, that is, the installation position of the cross beam 12 on the support frame 13 is adjusted adaptively according to the height of the shipboard cabinet 30. The installation height of the cross beam 12 on the support frame 13 refers to the height relative to the transition plate 11 with the transition plate 11 as the reference plane.

[0051] Please refer to Figure 2 , Figure 3 andFigure 7 , Figure 7 shows an exploded view of the reliability test fixture 10 for a shipboard cabinet. Further, a fourth mounting hole (not shown in the figure) is provided on the third plate body 121, and a fifth mounting hole is provided on the side edge of the support frame 13. The third plate body 121 is connected to the side edge of the support frame 13 through the fourth mounting member passing through the fourth mounting hole and the fifth mounting hole. The fourth mounting member can also be a screw, a bolt, a pin, a rivet, etc., which is not limited herein. Of course, the third plate body 121 can also be welded to the side edge of the support frame 13.

[0052] In one embodiment, the bottom of the support frame 13 is welded to the transition plate 11, and the cross beam 12 is welded to the side edge of the support frame 13.

[0053] In summary, the above-mentioned reliability test fixture 10 for a shipboard cabinet has the following advantages:

[0054] 1. The number of support frames 13 installed on the transition plate 11 can be determined according to the number of shipboard cabinets 30, and two or more shipboard cabinets 30 can be synchronously installed on the transition plate 11. The reliability test can be carried out on two or more shipboard cabinets 30 at the same time, which can reduce the test time, improve the test efficiency, and has strong expansibility.

[0055] 2. During the installation operation, select the first mounting hole 111 corresponding to the position of the mounting hole on the vibration table 20, and use a number of first mounting members to pass through the first mounting hole 111 and the mounting hole of the vibration table 20 to fixedly install the transition plate 11 on the vibration table 20. The transition plate 11 can be stably set on the vibration table 20, and the fixing effect is relatively stable. The installation operation of the reliability test fixture 10 for a shipboard cabinet on the vibration table 20 is simple.

[0056] 3. After the first mounting member passes through the first mounting hole 111 to fixedly install the transition plate 11 on the vibration table 20, the head of the first mounting member is located in the counterbore and will not protrude to the surface of the transition plate 11. In this way, there is no gap between the bottom surface of the shipboard cabinet 30 and the surface of the transition plate 11. Furthermore, the reliability test fixture 10 for a shipboard cabinet can better transfer the vibration load to the shipboard cabinet 30.

[0057] 4. It completely simulates the installation situation of the shipboard cabinet 30 in actual use, can effectively transfer the vibration load of the reliability test to the shipboard cabinet 30, and ensures the test quality and test effect. Multiple holes can be drilled and threaded on the transition plate 11, the side plate or the load-bearing plate for repeated use, which speeds up the test process and reduces the manufacturing cost and maintenance cost of the reliability test fixture 10 at the same time.

[0058] 5. The lightweight design and manufacture using magnesium alloy plates minimize the weight of the reliability test fixture 10 for shipboard cabinets, enabling more shipboard cabinets 30 to be installed for testing, and reducing the test time and cost.

[0059] 6. The strengthening beam 132 is connected to the frame beam 131. The strengthening beam 132 can enhance the structural strength of the frame body, and at the same time, the material used for the reliability test fixture 10 of the above-mentioned shipboard cabinet is less and the cost is lower.

[0060] 7. When the third plate body 121 fits with the side of the support frame 13, it is convenient to be detachably connected to the side of the support frame 13, and the connection structure is relatively stable; in addition, after the fourth plate body 122 and the fifth plate body 123 are respectively connected to the third plate body 121, the structural strength of the cross beam 12 can be ensured.

[0061] Please refer to Figure 1 and Figure 8 , in one embodiment, a reliability test device includes the reliability test fixture 10 for shipboard cabinets in any of the above embodiments, and further includes a vibration table 20 and a sensor 40. The transition plate 11 is installed on the vibration table 20. The sensor 40 is installed on the reliability test fixture 10. Specifically, the sensor 40 is adhesively fixed on the reliability test fixture 10.

[0062] For the above-mentioned reliability test device, the number of support frames 13 installed on the transition plate 11 can be determined according to the number of shipboard cabinets 30, and two or more shipboard cabinets 30 can be synchronously installed on the transition plate 11, so that the reliability tests of two or more shipboard cabinets 30 can be carried out simultaneously, reducing the test time and improving the test efficiency, with strong expandability.

[0063] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0064] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A reliability test fixture for a shipboard cabinet, characterized in that The reliability test fixture for the shipboard cabinet includes: A transition plate which is used to be installed on a vibration table and is used to connect with the bottom wall of the shipboard cabinet; Support frames, more than three support frames are arranged on the transition plate at intervals side by side; and Cross beams, there are two cross beams, one side edges of more than two support frames are all connected with one of the cross beams, and the other side edges of more than two support frames are all connected with the other cross beam, and one of the cross beams is used to connect with the back of the shipboard cabinet; Wherein, a plurality of first mounting holes are arranged on the transition plate, and the transition plate is fixedly installed on the vibration table through the first mounting parts passing through the first mounting holes; a plurality of second mounting holes are arranged on the transition plate, and the transition plate is connected with the bottom wall of the shipboard cabinet through the second mounting parts passing through the second mounting holes; a plurality of third mounting holes are arranged on the cross beam, and the cross beam is connected with the back of the shipboard cabinet through the third mounting parts passing through the third mounting holes.

2. The reliability test fixture for a shipboard cabinet according to claim 1, wherein, The first mounting holes are arranged in an array on the transition plate, and mounting holes corresponding to the positions of the first mounting holes are provided on the vibration table.

3. The reliability test fixture for the shipboard cabinet according to claim 1, characterized in that, The first mounting holes are counterbored holes.

4. The reliability test fixture for the shipboard cabinet according to claim 1, wherein After the second mounting holes are aligned with the mounting holes on the bottom wall of the shipboard cabinet, the shipboard cabinet is fixed on the transition plate with the second mounting parts; after the third mounting holes are aligned with the mounting holes on the back of the shipboard cabinet, the shipboard cabinet is fixed on the cross beam with the third mounting parts.

5. The reliability test fixture for a shipboard cabinet according to claim 1, characterized in that, The transition plate, the support frames and the cross beams are all made of magnesium alloy plates, stainless steel plates, iron plates, copper plates or aluminum plates.

6. The reliability test fixture for a shipboard cabinet according to claim 5, wherein, The support frame includes a plurality of frame beams and a plurality of strengthening beams; the frame beams are connected end to end in sequence to enclose a frame body, and the strengthening beams are connected with the frame beams and are located inside the frame body.

7. The reliability test fixture for the shipboard cabinet according to claim 6, characterized in that, The frame beams and the strengthening beams all include a first plate body and a second plate body, and the first plate body and the second plate body are connected to form an L-shaped beam.

8. The reliability test fixture for the shipboard cabinet according to claim 6, characterized in that, Adjacent frame beams are connected by welding, the frame beams and the strengthening beams are connected by welding, and adjacent strengthening beams are connected by welding; the frame body is a square frame body; a plurality of the strengthening beams are arranged in a "rice" shape, an "X" shape or a "cross" shape inside the frame body.

9. The reliability test fixture for a shipboard cabinet according to claim 5, characterized in that, The cross beam includes a third plate body, a fourth plate body and a fifth plate body, the fourth plate body and the fifth plate body are respectively connected to both sides of the third plate body, and the third plate body, the fourth plate body and the fifth plate body enclose a groove body.

10. A reliability test device, characterized in that, The reliability test fixture for the shipboard cabinet according to any one of claims 1 to 9 further includes a vibration table and a sensor, the transition plate is installed on the vibration table; the sensor is installed on the reliability test fixture.

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