Door panels, cabinets, electrical cabinets and rail vehicles

Abstract

The utility model discloses a door panel, a cabinet, an electrical cabinet and a rail vehicle. The cabinet is provided with a first window; the door panel includes a base plate, a reinforcing rib and a locking structure; the base plate is used to cover the first window, and is provided with a first plate surface and a second plate surface arranged oppositely; the reinforcing rib is fixed to the first plate surface and / or the second plate surface through a resistance welding point; the base plate is used to lock to the main frame of the cabinet through the locking structure. The technical solution of the utility model provides a door panel that does not damage the integrity of the materials of the base plate and the reinforcing plate itself, so as to improve the sealing performance of the door panel.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit electrical cabinets, in particular to a door panel, a cabinet body, an electrical cabinet and a rail vehicle. Background Art

[0002] At present, with the rapid development of rail transit, the demand for traction equipment is also increasing. The core components of subway and EMU traction electrical cabinets, auxiliary electrical cabinets, etc. are suspended at the bottom of the car body through their own cabinets. There are many electrical equipment placed inside their cabinets. These equipments influence and restrict each other, which is the guarantee for the electrical performance of the electrical cabinet. In order to ensure the normal use of the electrical cabinet, it is necessary to regularly inspect and maintain the electrical equipment inside the cabinet, so the first inspection and maintenance window needs to be set on the cabinet, and the first inspection and maintenance window needs to be covered with a door panel to improve the inspection and maintenance efficiency. In order to ensure the normal operation of the electrical cabinet during operation, high requirements are placed on the strength and sealing of the door panel.

[0003] In the related art, a thin base plate and a reinforcing rib are usually connected by riveting to form a door panel. Rivet holes need to be prepared in advance on the base plate and the reinforcing rib. After riveting, in order to ensure the sealing of the door panel, both sides of the rivet head and tail need to be glued. This will destroy the integrity of the materials of the base plate and the reinforcing rib themselves, and the glue will age and fail. As a result, the sealing of the cabinet cannot be guaranteed after long-term use. Utility Model Content

[0004] The main purpose of the utility model is to provide a door panel, aiming to provide a door panel which will not damage the integrity of the materials of the base plate and the reinforcing plate, so as to improve the sealing performance of the door panel.

[0005] In order to achieve the above-mentioned object, the utility model provides a door panel, which is applied to a cabinet, wherein the cabinet is provided with a first window, and the door panel comprises:

[0006] A substrate, the substrate is used to cover the first window and has a first plate surface and a second plate surface that are oppositely arranged;

[0007] A reinforcing rib, wherein the reinforcing rib is fixed to the first plate surface and / or the second plate surface through a resistance welding point;

[0008] A locking structure, through which the base plate is used to be locked to the main frame of the cabinet.

[0009] In an embodiment of the present invention, a sealing ring is provided at the periphery of the first panel surface, and the sealing ring is used to abut against the surface of the cabinet body on which the first window is provided.

[0010] In one embodiment of the utility model, when the reinforcing rib is fixed to the first plate surface by the resistance welding point, a bending portion is provided at the periphery of the first plate surface, a gap is formed between the reinforcing rib and the bending portion, and the sealing ring is arranged in the gap.

[0011] In an embodiment of the present invention, the reinforcing ribs include at least two transverse reinforcing ribs and at least two longitudinal reinforcing ribs, and the transverse reinforcing ribs and the longitudinal reinforcing ribs are arranged alternately.

[0012] In an embodiment of the present invention, the reinforcing rib is fixed to the first plate surface and / or the second plate surface through at least two of the resistance welding points.

[0013] In one embodiment of the present invention, the locking structure comprises:

[0014] A hanging ear, which is fixed to the base plate through a resistance welding point and is used to be hung on a hook of the main frame;

[0015] A door lock, which is movably disposed on the substrate and has a first state and a second state;

[0016] Wherein, when the door lock is in the first state, the door lock is used to lock to the main frame; when the door lock is in the second state, the door lock is used to unlock from the main frame.

[0017] In one embodiment of the utility model, the door panel further comprises an anti-detachment ear, which is fixed to the base plate via a resistance welding point and is used for hanging on an anti-detachment hook of the main frame.

[0018] In one embodiment of the utility model, the second plate surface is used to be set facing away from the first window; the door panel also includes at least one of a handle, a nameplate, and a warning sign, and at least one of the handle, the nameplate, and the warning sign is fixed to the second plate surface through a resistance welding point.

[0019] The utility model also provides a cabinet, comprising:

[0020] A main frame, wherein the main frame is provided with a first window;

[0021] The door panel comprises a base plate, a reinforcing rib and a locking structure; the base plate is covered on the first window and is provided with a first plate surface and a second plate surface arranged opposite to each other; the reinforcing rib is fixed to the first plate surface and / or the second plate surface by a resistance welding point; the base plate is used to be locked to the main frame of the cabinet by the locking structure

[0022] A hanging seat, which is arranged on the main frame and is used to connect to the vehicle body;

[0023] A covering skin is arranged on the surface of the main frame.

[0024] In one embodiment of the utility model, the main frame is provided with a hook, and the locking structure of the door panel includes a hanging ear, and the hanging ear is hung on the hook;

[0025] And / or, the main frame is further provided with an anti-detachment hook, and the anti-detachment hanging ear of the door panel is hung on the anti-detachment hook.

[0026] In an embodiment of the present invention, the main frame is further provided with a second window, and the cabinet body further includes a cover plate, and the cover plate is covered on the second window.

[0027] The utility model also provides an electrical cabinet, comprising the cabinet body as described above, wherein the cabinet body is provided with electrical equipment.

[0028] The utility model also provides a rail vehicle, comprising the electrical cabinet as described above.

[0029] In the door panel proposed by the utility model, the connection between the base plate and the reinforcement rib is achieved by adopting the resistance spot welding method to form a resistance welding point between the base plate and the reinforcement rib, so that the reinforcement rib can be fixed on the first plate surface and / or the second plate surface of the base plate through the resistance welding point; instead of adopting the riveting method to achieve the connection between the base plate and the reinforcement rib, there is no need to perform glue ball treatment on both sides of the rivet head and tail, which can avoid the problem of aging and failure of the glue ball. Since the resistance spot welding method is used to form the resistance welding point for fixing, it is equivalent to realizing the integrated connection of the base plate and the reinforcement rib. The resistance welding point has good mechanical properties and high strength, and will not damage the integrity of the materials of the base plate and the reinforcement rib itself, thereby improving the sealing of the door panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model 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 only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0031] Figure 1 It is a structural schematic diagram of a door panel of an embodiment of the utility model from a first perspective;

[0032] Figure 2 It is a structural schematic diagram of another perspective of an embodiment of a door panel of the utility model;

[0033] Figure 3 It is a partial structural cross-sectional view of an embodiment of a door panel of the utility model;

[0034] Figure 4 It is a partial structural top view of an embodiment of a door panel of the utility model;

[0035] Figure 5 This is a structural schematic diagram of an embodiment of a cabinet of the utility model;

[0036] Figure 6 for Figure 5 A partial enlarged view of the middle A;

[0037] Figure 7 This is a comparison curve of mechanical properties of stainless steel connections;

[0038] Figure 8 This is a comparison curve of the mechanical properties of aluminum alloy connections.

[0039] Description of Figure Numbers:

[0040] Label name Label name 1000 Cabinet 42 Door locks 100 Door Panel 50 Sealing ring 10 substrate 60 Anti-drop ear hook 11 First board 70 handle 111 Bending part 80 Nameplate a gap 90 Warning signs 12 Second board 200 Main frame 20 Reinforcement 210 First Window 20a Transverse reinforcement 220 Second window 20b Longitudinal reinforcement 230 hook up 30 Resistance welding point 300 Hanging seat 40 Locking structure 400 Skinning 41 Mounting ears 500 Cover 411 Hanging Department

[0041] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0045] The utility model provides a door panel 100 , aiming to provide a door panel 100 which will not damage the integrity of the materials of the base plate 10 and the reinforcing plate itself, so as to improve the sealing performance of the door panel 100 .

[0046] Combined with reference Figures 1 to 6 In one embodiment of the door panel 100 of the utility model, the door panel 100 is applied to a cabinet 1000, and the cabinet 1000 is provided with a first window 210; the door panel 100 includes a base plate 10, a reinforcing rib 20 and a locking structure 40; the base plate 10 is used to cover the first window 210, and is provided with a first plate surface 11 and a second plate surface 12 arranged oppositely; the reinforcing rib 20 is fixed to the first plate surface 11 and / or the second plate surface 12 through a resistance welding point 30; the base plate 10 is used to lock on the main frame 200 of the cabinet 1000 through the locking structure 40.

[0047] It can be understood that in the door panel 100 proposed by the present invention, the connection between the base plate 10 and the reinforcement rib 20 is achieved by adopting the resistance spot welding method, so that a resistance welding point 30 is formed between the base plate 10 and the reinforcement rib 20, so that the reinforcement rib 20 can be fixed on the first plate surface 11 and / or the second plate surface 12 of the base plate 10 through the resistance welding point 30; instead of adopting the riveting method to achieve the connection between the base plate 10 and the reinforcement rib 20, there is no need to perform glue ball treatment on both sides of the rivet head and tail, which can avoid the problem of aging and failure of the glue ball. Since the resistance welding point 30 is formed by the resistance spot welding method for fixing, it is equivalent to realizing the integrated connection of the base plate 10 and the reinforcement rib 20. The resistance welding point 30 has good mechanical properties and high strength, and will not damage the integrity of the materials of the base plate 10 and the reinforcement rib 20 itself, thereby improving the sealing of the door panel 100.

[0048] In addition, since resistance spot welding is used to form the resistance welding point 30 for fixing, the required heat input is small, the substrate 10 is less deformed by heat, and the appearance is more beautiful; and since there is no need to prepare rivet holes on the substrate 10 and the reinforcement rib 20 in advance, there is no need to apply glue to both sides of the rivet head and tail, which can simplify the manufacturing process.

[0049] In this embodiment, the base plate 10 and the reinforcing ribs 20 may be metal structural parts such as stainless steel, aluminum alloy, etc.

[0050] It should be noted that the resistance spot welding process is a common welding fixing process, and the specific process steps are as follows: under the pressure of the upper and lower electrodes of the resistance spot welding machine, the first workpiece (substrate 10) and the second workpiece (reinforcement rib 20) are brought into contact and fit, and the current is emitted from one of the electrode heads and flows through the first and second workpieces to the other electrode head. When the current passes through the contact surface of the first and second workpieces, the metal contact surfaces of the first and second workpieces melt under the action of heat to form a molten pool, and after solidification, a resistance welding point 30 will be formed between the first and second workpieces, so that the first and second workpieces are connected together, realizing the physical connection mode of atomic bonding between metals. Since the resistance spot welding process is short and the heat is relatively concentrated, the first and second workpieces can still maintain the integrity of their own materials after welding, so the sealing performance is better.

[0051] In this embodiment, when the base plate 10 is covered on the first window 210 of the cabinet 1000 , the base plate 10 can be locked on the main frame 200 of the cabinet 1000 by the locking structure 40 to ensure the installation reliability of the door panel 100 .

[0052] In actual application, the locking structure 40 can be a structure composed of a hanging ear 41 and a door lock 42, or only a door lock 42, or a bolt, as long as it can lock the base plate 10 on the main frame 200.

[0053] Optionally, see Figure 2 In one embodiment of the door panel 100 of the present invention, a sealing ring 50 is provided at the periphery of the first panel surface 11 , and the sealing ring 50 abuts against the surface of the cabinet 1000 where the first window 210 is provided.

[0054] With such a configuration, the use of the sealing ring 50 can achieve a sealed fit between the door panel 100 and the main frame 200 of the cabinet 1000, and the sealing of the first window 210 covered by the door panel 100 can be improved to enhance the protection effect on the electrical equipment inside the cabinet 1000.

[0055] Exemplarily, the sealing ring 50 may be a rubber ring.

[0056] It should be noted that when the door panel 100 is applied to the cabinet 1000 , the first panel surface 11 may be arranged facing the first window 210 .

[0057] Optionally, see Figure 2 In one embodiment of the door panel 100 of the present invention, when the reinforcing rib 20 is fixed to the first plate surface 11 through the resistance welding point 30, a bending portion 111 is provided at the periphery of the first plate surface 11, and a gap a is formed between the reinforcing rib 20 and the bending portion 111, and the sealing ring 50 is arranged in the gap a.

[0058] By installing the sealing ring 50 in the gap a in this way, the installation reliability of the sealing ring 50 can be improved, and the sealing ring 50 can be prevented from easily falling off the base plate 10 after repeated disassembly of the door panel 100, thereby affecting the service life of the sealing ring 50.

[0059] Optionally, see Figure 2 In one embodiment of the door panel 100 of the present invention, the reinforcing ribs 20 include at least two transverse reinforcing ribs 20a and at least two longitudinal reinforcing ribs 20b, and the transverse reinforcing ribs 20a and the longitudinal reinforcing ribs 20b are arranged alternately.

[0060] With such configuration, the base plate 10 can be better reinforced by at least two transverse reinforcing ribs 20a and at least two longitudinal reinforcing ribs 20b arranged in a staggered manner, so as to enhance the mechanical properties of the base plate 10, thereby improving the stability of the door panel 100 during operation of the cabinet 1000.

[0061] In some embodiments, at least two longitudinal reinforcing ribs 20b may be located between two transverse reinforcing ribs 20a, and at least two longitudinal reinforcing ribs 20b may be spaced apart along the length direction of the transverse reinforcing ribs 20a.

[0062] Optionally, see Figure 4 In one embodiment of the door panel 100 of the present invention, the reinforcing rib 20 is fixed to the first panel surface 11 and / or the second panel surface 12 via at least two resistance welding points 30 .

[0063] By configuring in this way, by using at least two resistance welding spots 30 to achieve connection between the reinforcing rib 20 and the substrate 10 , the connection reliability between the reinforcing rib 20 and the substrate 10 can be improved to avoid failure of the connection between the reinforcing rib 20 and the substrate 10 .

[0064] In one embodiment, first, the specific process steps of the resistance spot welding process are as follows:

[0065] 1. Parts cleaning

[0066] 1) Ensure that all surfaces to be welded are free from conditions that are detrimental to the welding process (such as films, surface oxides, scale, protective topcoats, inks, oils, dirt or any other contamination); for example, oxide coatings can be removed by mechanical or chemical treatments;

[0067] 2) After cleaning, clean gloves must be worn during transportation and storage to prevent re-contamination. After cleaning, the parts must be protected until welding is completed.

[0068] 2. Welding machine debugging

[0069] Debug the welding machine according to the parameter requirements of the resistance spot welding machine and select the appropriate electrode head.

[0070] Select different welding process parameters according to the different materials and thicknesses of parts; input the process parameters into the welding machine through the panel.

[0071] 3. Welding

[0072] After completing the welding machine debugging, place the parts to be welded on the corresponding welding position of the welding machine, and complete the welding by starting the welding machine switch.

[0073] 4. Weld inspection

[0074] After welding is completed, the surface quality of the weld needs to be inspected (for example, surface cracks, surface pores and other defects).

[0075] Second, the distance requirements for resistance spot welding:

[0076] Considering that during the resistance spot welding process, the completed welds may produce welding shunts and other phenomena, it is necessary to select appropriate spacing between welds and the distance between welds and the edge of the plate.

[0077] Third, the mechanical properties comparison of resistance spot welding, riveting and plug welding joints:

[0078] By observing the structure of the door panel 100, it is found that the resistance spot welding, rivet connection and plug welding connection are all subject to shear force. Taking the welding of 2mm+2mm thick plate as an example, the shear force of the three joints is experimentally compared. The data are shown in Table 1, and the shear force-displacement curve is shown in Figure 7 and Figure 8 :

[0079] Table 1 Comparison of mechanical properties of different connection methods

[0080]

[0081] In summary, after analyzing the data, the conclusion is: regardless of whether the material is stainless steel or aluminum alloy, the order of the maximum shear force that different joints can withstand is: resistance spot welding connection > plug welding connection > riveting. Therefore, this solution uses resistance spot welding to achieve the connection between the reinforcing rib 20 and the base plate 10, which can make the maximum shear force that the connection between the reinforcing rib 20 and the base plate 10 withstand larger, and the mechanical properties of resistance spot welding are better, so the strength of the door panel 100 is better.

[0082] Optionally, see Figure 1 , Figure 2 , Figure 5 , Figure 6In one embodiment of the door panel 100 of the utility model, the locking structure 40 includes a hanging ear 41 and a door lock 42; the hanging ear 41 is fixed to the base plate 10 through a resistance welding point 30, and is used to be hung on a hook 230 of the main frame 200; the door lock 42 is movably arranged on the base plate 10, and has a first state and a second state; wherein, when the door lock 42 is in the first state, the door lock 42 is used to lock the main frame 200; when the door lock 42 is in the second state, the door lock 42 is used to unlock the door from the main frame 200.

[0083] With such arrangement, by using a combination of the hanging ear 41 and the door lock 42 to lock the door lock 42 on the main frame 200, the disassembly and installation of the door panel 100 can be facilitated (for example, the door panel 100 can be disassembled by opening the door lock 42 with a key, and the door lock 42 can be locked during the installation process without the need for torqueing and loosening marks like bolts); and, by using the cooperation of the hanging ear 41 and the hook 230, not only can the door panel 100 be suspended and supported, freeing the user's hands and eliminating the need for the user to hold the door panel 100 all the time, but also a reference for installation positioning can be provided for the door panel 100 to ensure the installation accuracy of the door panel 100.

[0084] In addition, the connection between the ear 41 and the substrate 10 is achieved by using resistance spot welding to form a resistance welding point 30 between the substrate 10 and the ear 41, so that the ear 41 can be fixed on the substrate 10 through the resistance welding point 30, which is equivalent to achieving an integrated connection between the substrate 10 and the ear 41. The resistance welding point 30 has good mechanical properties and high strength, and will not destroy the integrity of the materials of the substrate 10 and the ear 41 itself, thereby improving the sealing of the door panel 100.

[0085] In actual application, the door lock 42 can be rotated relative to the substrate 10, or can be slid relative to the substrate 10, so that the door lock 42 can be switched between the first state and the second state.

[0086] Optionally, see Figure 1 , Figure 2 In one embodiment of the door panel 100 of the present invention, the hanging portion 411 of the hanging ear 41 protrudes from the top of the base plate 10. When there are at least two hanging ears 41, the protruding heights of the hanging portions 411 of at least two hanging ears 41 are equal.

[0087] By configuring in this way, the hanging portion 411 of the hook 41 is protruded from the top of the substrate 10, which makes it easier to hang the hanging portion 411 of the hook 41 on the hook 230. In addition, by making the protruding heights of the hanging portions 411 of at least two hooks 41 equal, the hanging portion 411 can be prevented from tilting when it cooperates with the hook 230.

[0088] Optionally, see Figure 2In one embodiment of the door panel 100 of the present invention, the door lock 42 is rotatably disposed on the base plate 10 to switch between a first state and a second state.

[0089] With such arrangement, the door lock 42 can be locked and unlocked by rotating, so that the user can lock and unlock the door lock 42 using a key, making it easier to install and remove the door panel 100.

[0090] Optionally, see Figure 1 , Figure 2 , Figure 6 In one embodiment of the door panel 100 of the present invention, the door panel 100 also includes an anti-detachment ear 60, which is fixed to the base plate 10 through a resistance welding point 30 and is used to hang on the anti-detachment hook of the main frame 200.

[0091] With such arrangement, when the locking structure 40 fails during the operation of the cabinet 1000 , the cooperation of the anti-detachment ear 60 and the anti-detachment hook can prevent the door panel 100 from falling off and causing damage to other components of the cabinet 1000 .

[0092] In addition, the connection between the anti-detachment ear 60 and the substrate 10 is achieved by adopting resistance spot welding to form a resistance welding point 30 between the substrate 10 and the anti-detachment ear 60, so that the anti-detachment ear 60 can be fixed on the substrate 10 through the resistance welding point 30, which is equivalent to realizing an integrated connection between the substrate 10 and the anti-detachment ear 60. The resistance welding point 30 has good mechanical properties and high strength, and will not destroy the integrity of the materials of the substrate 10 and the anti-detachment ear 60 itself, thereby also improving the sealing of the door panel 100.

[0093] Optionally, see Figure 1 , Figure 6 In one embodiment of the door panel 100 of the utility model, the second panel surface 12 is used to be set back from the first window 210; the door panel 100 also includes at least one of a handle 70, a nameplate 80, and a warning sign 90, and at least one of the handle 70, the nameplate 80, and the warning sign 90 is fixed to the second panel surface 12 through a resistance welding point 30.

[0094] With such arrangement, the handle 70 is designed to be carried by the user, so as to facilitate the disassembly and assembly of the door panel 100; optionally, the handle 70 is positioned at the center of gravity of the base plate 10 as much as possible, and the design is more ergonomic; the nameplate 80 is designed to remind the user of the use of the cabinet 1000 through patterns, texts, etc., and secondly, it can display the name, specifications, technical requirements and other information of the cabinet 1000, so as to facilitate the user to manage and maintain it; the warning sign 90 is designed to remind the user that the cabinet 1000 is dangerous or easily damaged.

[0095] In addition, the connection between the substrate 10 and the handle 70, the nameplate 80, and the warning sign 90 is achieved by using resistance spot welding to form resistance welding points 30 between the substrate 10 and the handle 70, the nameplate 80, and the warning sign 90, so that the handle 70, the nameplate 80, and the warning sign 90 can be fixed on the substrate 10 through the resistance welding points 30, which is equivalent to achieving an integrated connection between the substrate 10 and the handle 70, the nameplate 80, and the warning sign 90. The resistance welding points 30 have good mechanical properties and high strength, and will not damage the integrity of the materials of the substrate 10 and the handle 70, the nameplate 80, and the warning sign 90 themselves, thereby improving the sealing of the door panel 100.

[0096] Combined with reference Figure 5 , Figure 6 The utility model also proposes a cabinet 1000, which includes a main frame 200, a hanging seat 300, a skin 400 and the door panel 100 as described above. The specific structure of the door panel 100 refers to the above embodiment. Since the cabinet 1000 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the main frame 200 is provided with a first window 210; the base plate 10 is covered on the first window 210; the hanging seat 300 is provided on the main frame 200 for connecting to the car body; the skin 400 is provided on the surface of the main frame 200.

[0097] It is understandable that the connection between the substrate 10 and the reinforcing rib 20 is achieved by using resistance spot welding to form a resistance welding point 30 between the substrate 10 and the reinforcing rib 20, so that the reinforcing rib 20 can be fixed on the first plate surface 11 and / or the second plate surface 12 of the substrate 10 through the resistance welding point 30; instead of using riveting to achieve the connection between the substrate 10 and the reinforcing rib 20, there is no need to process the glue ball on both sides of the rivet head and tail, which can avoid the problem of aging and failure of the glue ball. Since the resistance welding point 30 is formed by resistance spot welding for fixing, it is equivalent to realizing the integrated connection between the substrate 10 and the reinforcing rib 20. The resistance welding point 30 has good mechanical properties and high strength, and will not damage the integrity of the materials of the substrate 10 and the reinforcing rib 20, thereby improving the sealing of the door panel 100. Therefore, when the door panel 100 with high sealing performance is covered on the first window 210 of the main frame 200, it can play a good protective and sealing role.

[0098] It should be noted that the main frame 200 is the main load-bearing frame of the entire cabinet 1000, and the internal electrical equipment can be installed on the main frame 200. The main frame 200 is designed with a hanging seat 300 for connecting with the vehicle body to install the cabinet 1000 at the bottom of the vehicle body.

[0099] The skin 400 is a non-load-bearing structure, which mainly plays a role of protection and sealing. Among them, protection: During the operation of the electrical cabinet, foreign objects such as stones may hit the electrical cabinet, and the skin 400 can protect the electrical equipment inside the cabinet 1000. Sealing: Since the use environment of the electrical equipment inside the cabinet 1000 is relatively harsh (high requirements for dryness and cleanliness), the skin 400 plays a sealing role. The skin 400 can be connected to the surface of the main frame 200 by laser welding or gluing and sealing.

[0100] Optionally, see Figure 1 , Figure 2 , Figure 5 , Figure 6 In one embodiment of the cabinet 1000 of the present invention, the main frame 200 is provided with a hook 230 , and the locking structure 40 of the door panel 100 includes a hanging ear 41 , and the hanging ear 41 is hung on the hook 230 .

[0101] With such arrangement, by using the cooperation of the hanging ear 41 and the hook 230 , not only can the door panel 100 be suspended and supported, freeing the user's hands and eliminating the need for the user to hold the door panel 100 all the time, but also a reference for installation and positioning of the door panel 100 can be provided to ensure the installation accuracy of the door panel 100 .

[0102] Optionally, see Figure 1 , Figure 2 , Figure 6 In one embodiment of the cabinet 1000 of the present invention, the main frame 200 is further provided with an anti-drop hook, and the anti-drop ear 60 of the door panel 100 is hung on the anti-drop hook.

[0103] With such arrangement, when the locking structure 40 fails during the operation of the cabinet 1000 , the cooperation of the anti-detachment ear 60 and the anti-detachment hook can prevent the door panel 100 from falling off and causing damage to other components of the cabinet 1000 .

[0104] Optionally, see Figure 5 In one embodiment of the cabinet 1000 of the present invention, the main frame 200 is further provided with a second window 220 , and the cabinet 1000 further includes a cover plate 500 , which is covered on the second window 220 .

[0105] In this arrangement, since a large number of electrical devices will be installed inside the cover body, it is impossible to place all the electrical devices close to the first window 210, so a second window 220 can be opened on the main frame 200, and a cover 500 can be used to cover the second window 220. In this way, when the cover 500 is opened, some electrical devices can also be maintained, thereby facilitating the maintenance of all electrical devices inside the cabinet 1000.

[0106] It should be noted that, since some electrical equipment requires maintenance more frequently and some electrical equipment requires maintenance less frequently, the electrical equipment requiring maintenance more frequently can be placed near the door panel 100, and the electrical equipment requiring maintenance less frequently can be placed near the cover panel 500, that is, the door panel 100 is disassembled more frequently and the cover panel 500 is disassembled less frequently. Since the cover panel 500 is disassembled less frequently, a bolt connection structure can be used to lock the cover panel 500 on the main frame 200. Although the disassembly and installation process is complicated (re-torque and release mark need to be drawn), the price of the door lock 42 is relatively high, and the use of a bolt connection structure can save costs; and since the door panel 100 is disassembled more frequently, a structure combining the hanging ear 41 and the door lock 42 is required, so that the disassembly and installation of the door panel 100 are more convenient (for example, the door panel 100 can be disassembled by opening the door lock 42 with a key, and the door lock 42 can be locked during the installation process, without the need for torque and release mark like bolts).

[0107] In some embodiments, the cover plate 500 and the door plate 100 are different from each other except for the locking structure 40 between the main frame 200, and other structures can be the same as the door plate 100. For example, the cover plate 500 can also include a cover body and a reinforcement body, and the reinforcement body can be fixed to the cover body through the resistance welding point 30, which can not only ensure the strength of the cover plate 500, but also will not damage the integrity of the material of the cover plate 500 itself, so as to ensure the sealing of the cover plate 500. Of course, the cover plate 500 can also be provided with no reinforcement body, which can be determined according to the size of the cover plate 500.

[0108] Furthermore, the cover plate 500 may also include sealing strips, handles, nameplates, warning signs and other structures, which may also be fixed to the cover body through resistance welding points 30. Optionally, the sealing strip may be provided on the surface of the cover plate 500 facing the second window 220.

[0109] The utility model also provides an electrical cabinet, which includes the cabinet 1000 as described above. The specific structure of the cabinet 1000 refers to the above embodiments. Since the electrical cabinet adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the cabinet 1000 is equipped with electrical equipment.

[0110] It should be noted that the electrical cabinet may be a rail transit electrical cabinet, and the electronic equipment in the cabinet 1000 may mainly include traction inverters, auxiliary inverters, brake resistors, high-voltage boxes, low-voltage boxes, lightning arrester boxes, etc. The electrical cabinet is the core part of urban rail transit vehicles, realizing the traction, braking and other auxiliary functions of the train.

[0111] The use environment of the electrical cabinet is usually installed at the bottom of the vehicle body without any protection. It also needs to meet climatic conditions and should be anti-corrosion, anti-insect, waterproof, anti-mildew, dust-proof, fire-proof, anti-lightning, anti-hail, anti-smog, etc.

[0112] The utility model also provides a rail vehicle, which includes the electrical cabinet as described above. The specific structure of the electrical cabinet refers to the above embodiment. Since the rail vehicle adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Specifically, the electrical cabinet can be connected to the bottom of the vehicle body through the hanging seat 300 on the cabinet body 1000.

[0113] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A door panel, applied to a cabinet, wherein the cabinet is provided with a first window, characterized in that: The door panel comprises: A substrate, the substrate is used to cover the first window and has a first plate surface and a second plate surface that are oppositely arranged; A reinforcing rib, wherein the reinforcing rib is fixed to the first plate surface and / or the second plate surface through a resistance welding point; A locking structure, through which the base plate is used to be locked to the main frame of the cabinet.

2. The door panel according to claim 1, characterized in that: A sealing ring is disposed at the periphery of the first panel surface, and the sealing ring is used to abut against the surface of the cabinet body on which the first window is disposed.

3. The door panel according to claim 2, characterized in that: When the reinforcing rib is fixed to the first plate surface through the resistance welding point, a bending portion is provided at the periphery of the first plate surface, a gap is formed between the reinforcing rib and the bending portion, and the sealing ring is arranged in the gap.

4. The door panel according to any one of claims 1 to 3, characterized in that: The reinforcing ribs include at least two transverse reinforcing ribs and at least two longitudinal reinforcing ribs, and the transverse reinforcing ribs and the longitudinal reinforcing ribs are arranged alternately.

5. The door panel according to any one of claims 1 to 3, characterized in that: The reinforcing rib is fixed to the first plate surface and / or the second plate surface through at least two of the resistance welding points.

6. The door panel according to any one of claims 1 to 3, characterized in that: The locking structure comprises: A hanging ear, which is fixed to the base plate through a resistance welding point and is used to be hung on a hook of the main frame; A door lock, which is movably disposed on the substrate and has a first state and a second state; Wherein, when the door lock is in the first state, the door lock is used to lock to the main frame; when the door lock is in the second state, the door lock is used to unlock from the main frame.

7. The door panel according to any one of claims 1 to 3, characterized in that: The door panel also includes an anti-slip lug, which is fixed to the base plate through a resistance welding point and is used to be hung on the anti-slip hook of the main frame.

8. The door panel according to any one of claims 1 to 3, characterized in that: The second panel surface is used to be set facing away from the first window; the door panel also includes at least one of a handle, a nameplate, and a warning sign, and at least one of the handle, the nameplate, and the warning sign is fixed to the second panel surface through a resistance welding point.

9. A cabinet, characterized in that: include: A main frame, wherein the main frame is provided with a first window; The door panel according to any one of claims 1 to 8, wherein the base plate covers the first window; A hanging seat, which is arranged on the main frame and is used to connect to the vehicle body; A covering skin is arranged on the surface of the main frame.

10. The cabinet according to claim 9, characterized in that: The main frame is provided with a hook, and the locking structure of the door panel includes a hanging ear, and the hanging ear is hung on the hook; And / or, the main frame is further provided with an anti-detachment hook, and the anti-detachment hanging ear of the door panel is hung on the anti-detachment hook.

11. The cabinet according to claim 9, characterized in that: The main frame is further provided with a second window, and the cabinet body further includes a cover plate, and the cover plate is covered on the second window.

12. An electrical cabinet, characterized in that: The invention comprises a cabinet as claimed in any one of claims 9 to 11, wherein electrical equipment is arranged in the cabinet.

13. A rail vehicle, characterized in that: Comprising the electrical cabinet as claimed in claim 12.

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