CN109768479B - Outdoor electrical cabinet and its cabinet - Google Patents

Abstract

The invention relates to an outdoor electrical cabinet and a cabinet body thereof. The outdoor electrical cabinet includes a cabinet body and electrical equipment arranged in the cabinet body. The cabinet body is provided with an outer door frame and an inner door frame, and the outer door frame and the inner door frame are respectively provided with an outer sealing door and an inner sealing door. The cabinet body A dust accumulation platform is arranged on the outer side of the inner door frame at the bottom of the bottom of the door, and the upper surface of the dust accumulation platform smoothly extends outward from the inner door frame to the cabinet door corresponding to the outer sealing door. The above solution solves the problem that it is difficult to clean the sand and dust deposited between the inner and outer sealing doors in the outdoor electrical cabinet using the double-layer sealing door in the prior art.

Description

Outdoor electrical cabinet and its cabinet

technical field

The invention relates to an outdoor electrical cabinet and a cabinet body thereof.

Background technique

Outdoor electrical cabinets are widely used in outdoor environments, such as on-site control cabinets used in the power industry. The on-site control cabinet generally adopts the structure design of outer door + inner door. It is used to install electrical operating components such as opening and closing handles, transfer switches, and indicator lights. For example, the electrical operation control cabinet disclosed in the Chinese patent with the authorization announcement number of CN203300955 U includes a cabinet body and a door body hinged on the cabinet body. The door body includes an outer door and an inner door, and the outer door and the inner door are hinged on the cabinet body respectively. . Specifically, the outer door includes a door frame and a glass plate, the glass plate is fixed on the door frame, and the door frame is hinged on the cabinet body; and the inner door is provided with an operation panel, which is equipped with operation switches, indicator lights, miniature circuit breakers and other elements device. Through the outer door, you can directly watch the indicator light on the operation panel, see the opening and closing position of the operation switch, and ensure the overall dustproof and moisture resistance of the cabinet.

However, in the existing outdoor electrical cabinet, although the outer door is provided with a sealing structure to protect the cabinet body, the inner door generally adopts a non-sealing structure. As shown in FIG. There is a gap 103 between the bottom of the door 101 and the bottom wall of the cabinet 102. When the on-site control cabinet is used in a windy and sandy area, if the outer door 104 is opened for electrical operation, it is inevitable that sand and dust will pass through the inner door under the action of wind. The space 103 between 101 and the cabinet 102 enters the inside of the control cabinet (as shown by the arrow in the figure), causing damage or failure of the components installed inside the control cabinet, affecting the safe operation of the on-site control cabinet, and the overall dustproof effect is poor.

The Chinese patent with the authorization announcement number CN206490929 U discloses an outdoor control cabinet with double sealing doors. The front side of the cabinet body is sequentially installed with an outer sealing door and an inner sealing door. When the cabinet button is operated, after the outer sealing door is opened, the inner sealing The door can still effectively prevent water and dust from entering the cabinet and damaging components. At present, although the above-mentioned electrical cabinet with double-layered sealing door can prevent sand and dust from entering the electrical equipment after the outer sealing door is opened, the outer door frame of the outer sealing door and the inner door frame of the inner sealing door are both directly arranged on the bottom plate of the cabinet body. The height of the bottom plate is lower than the outer door frame, and there is a gap between the outer door frame and the inner door frame. After the outer sealing door is opened, the sand and dust are easily deposited in the recessed area formed by the interval between the outer sealing door and the inner sealing door, which can be cleaned up. It is very inconvenient, and it is easy to cause corrosion to the cabinet if it is not cleaned properly. If rainwater enters the deposited sand and dust, the problem will be more serious, affecting the life of the electrical cabinet, increasing the maintenance workload and difficulty, and increasing the use and maintenance costs.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an outdoor electrical cabinet to solve the problem that the outdoor electrical cabinet using double-layer sealed doors in the prior art is difficult to clean the sand and dust deposited between the inner and outer sealed doors; at the same time, the present invention also provides an outdoor electrical cabinet. The cabinet body of the electrical cabinet.

To achieve the above object, the technical scheme adopted by the outdoor electrical cabinet in the present invention is:

Technical solution 1. An outdoor electrical cabinet, including a cabinet body and electrical equipment arranged in the cabinet body, the cabinet body is provided with an outer door frame and an inner door frame, and the outer door frame and the inner door frame are respectively provided with an outer sealing door and an inner sealing door, The bottom of the cabinet is provided with a dust accumulation platform on the outer side of the inner door frame, and the upper surface of the dust accumulation platform smoothly extends outward from the inner door frame to the cabinet door corresponding to the outer sealing door.

Beneficial effects: The present invention adopts the above technical scheme, and by setting the dust accumulation platform on the outside of the inner door frame, the sand and dust can fall and deposit on the upper surface of the dust accumulation platform after being blocked by the inner sealing door, while the upper surface of the dust accumulation platform can be deposited on the upper surface of the dust accumulation platform. Smoothly extending to the door of the cabinet corresponding to the outer sealing door, the sand and dust can be easily cleaned out of the cabinet. Compared with the prior art, the operation is convenient, which is beneficial to improve the maintenance efficiency and reduce the maintenance cost.

Technical solution 2. The outdoor electrical cabinet according to technical solution 1, the inner door frame and the outer door frame have an interval in the inner and outer directions, and a transition platform is arranged in the interval, and the top surface of the transition platform, the outer door frame The top surface of the part located at the bottom of the cabinet body transitions smoothly, and the dust accumulation platform is jointly formed by the transition platform and the outer door frame.

Beneficial effects: by setting the transition platform, the transition platform can be conveniently formed together with the outer door frame, which facilitates the transformation and upgrading of the existing electrical cabinet without causing excessive cost increase.

Technical solution 3. The outdoor electrical cabinet according to technical solution 2, the part of the outer sealing door used to cooperate with the outer door frame is located on the inner side of the outer sealing door, and the top surface of the part of the outer door frame located at the bottom of the cabinet body is: On the horizontal plane, the top surface of the transition platform is flush with the top surface of the part of the outer door frame located at the bottom of the cabinet.

Beneficial effects: the outer door frame is set to a structure in which the top surface is a horizontal plane, which can better ensure the smooth discharge of sand and dust.

Technical solution 4. The outdoor electrical cabinet according to technical solution 2 or 3, the bottom of the cabinet body is provided with an inner door frame support beam on the side of the outer door frame close to the inside of the cabinet body, and the top surface of the inner door frame support beam A door frame folded plate is fixed on it, and the door frame folded plate includes a fixed part fixed on the top surface of the inner door frame support beam and a bent part used to form the inner door frame, and the transition platform is composed of the fixed part and the inner door frame. A door frame support beam is formed.

Beneficial effects: the use of the inner door frame supporting beam and the door frame folding plate is convenient for the manufacture and installation of the inner door frame.

Technical solution 5. The outdoor electrical cabinet according to technical solution 4, wherein the fixing part is fixed on the inner door frame support beam by threaded fasteners or rivets.

Technical solution 6. The outdoor electrical cabinet according to technical solution 4, wherein the cross-section of the inner door frame support beam is U-shaped, and the inner door frame support beam is fixed on the cabinet body in a manner that the opening is buckled toward the cabinet body.

Beneficial effects: the inner door frame support beam with a U-shaped cross section is lighter in weight, which can reduce the weight increase of the electrical cabinet.

Technical solution 7. The outdoor electrical cabinet according to technical solution 4, wherein the inner door frame support beam rests on the side wall of the outer door frame facing the inner side of the cabinet body.

Technical solution 8. The outdoor electrical cabinet according to technical solution 1 or 2 or 3, wherein the inner door frame has a horizontal bending portion located below the bottom edge of the inner sealing door when the inner sealing door is closed, the horizontal bending portion The height is higher than the dust collecting platform.

Beneficial effects: The above structure forms a stepped structure between the inner door frame and the dust accumulation platform, which can prevent sand and dust from entering the cabinet when the inner sealing door is closed, and better ensure the protection performance.

Technical solution 9. The outdoor electrical cabinet according to technical solution 1 or 2 or 3, the inner door frame is provided with a vertical stopper for stopping and cooperating with the back of the inner sealing door when the inner sealing door is closed, so The vertical stop part is provided with a sealing member which is sealingly matched with the back of the inner sealing door.

Technical solution 10. The outdoor electrical cabinet according to technical solution 2 or 3, the bottom of the cabinet body is provided with an inner door frame support beam on the side of the outer door frame close to the inside of the cabinet body, and the inner door frame is fixed to the inner door frame to support On the beam, the transition platform is formed by the inner door frame support beam.

Technical solution 11. The outdoor electrical cabinet according to technical solution 1 or 2 or 3, the front part of the bottom plate of the cabinet body has an upward vertical bending part and an L-shaped bending part connected to the vertical bending part The L-shaped bent portion and the vertical bent portion form a U-shaped structure with an opening downward, and the outer door frame is formed by the L-shaped bent portion and the vertical bent portion.

Beneficial effects: the use of the scheme is convenient for manufacture and simple in structure.

Technical solution 12. The outdoor electrical cabinet according to technical solution 1 or 2 or 3, the top and bottom of the outer door frame and the inner door frame are arranged in mirror images up and down.

Beneficial effects: adopting the scheme can reduce the types of parts and components, facilitate mass production, and facilitate assembly.

The technical scheme adopted by the cabinet body of the outdoor electrical cabinet in the present invention is:

Technical solution 1. The cabinet body of the outdoor electrical cabinet. The cabinet body is provided with an outer door frame and an inner door frame. The outer door frame and the inner door frame are respectively provided with an outer sealing door and an inner sealing door. A dust accumulation platform is arranged on the outer side of the door, and the upper surface of the dust accumulation platform smoothly extends outward from the inner door frame to the cabinet door corresponding to the outer sealing door.

Beneficial effects: The present invention adopts the above technical scheme, and by setting the dust accumulation platform on the outside of the inner door frame, the sand and dust can fall and deposit on the upper surface of the dust accumulation platform after being blocked by the inner sealing door, while the upper surface of the dust accumulation platform can be deposited on the upper surface of the dust accumulation platform. Smoothly extending to the door of the cabinet corresponding to the outer sealing door, the sand and dust can be easily cleaned out of the cabinet. Compared with the prior art, the operation is convenient, which is beneficial to improve the maintenance efficiency and reduce the maintenance cost.

Technical solution 2. The cabinet body of the outdoor electrical cabinet according to the technical solution 1, the inner door frame and the outer door frame have an interval in the inner and outer directions, and a transition platform is arranged in the interval, and the top surface of the transition platform, all the The top surface of the part of the outer door frame located at the bottom of the cabinet body transitions smoothly, and the dust accumulation platform is jointly formed by the transition platform and the outer door frame.

Beneficial effects: by setting the transition platform, the transition platform can be conveniently formed together with the outer door frame, which facilitates the transformation and upgrading of the existing electrical cabinet without causing excessive cost increase.

Technical solution 3. The cabinet body of the outdoor electrical cabinet according to the technical solution 2, the part of the outer sealing door used to cooperate with the outer door frame is located on the inner side of the outer sealing door, and the outer door frame is located at the bottom part of the cabinet body. The top surface is a horizontal surface, and the top surface of the transition platform is flush with the top surface of the part of the outer door frame located at the bottom of the cabinet.

Beneficial effects: the outer door frame is set to a structure in which the top surface is a horizontal plane, which can better ensure the smooth discharge of sand and dust.

Technical solution 4. The cabinet body of the outdoor electrical cabinet according to the technical solution 2 or 3, the bottom of the cabinet body is provided with an inner door frame support beam on the side of the outer door frame close to the inside of the cabinet body, and the inner door frame support beam A door frame folded plate is fixed on the top surface of the inner door frame, the door frame folded plate includes a fixed part fixed on the top surface of the inner door frame support beam and a bent part used to form the inner door frame, and the transition platform is fixed by the fixed part Parts and inner door frame support beams are formed.

Beneficial effects: the use of the inner door frame supporting beam and the door frame folding plate is convenient for the manufacture and installation of the inner door frame.

Technical solution 5. The cabinet body of the outdoor electrical cabinet according to the technical solution 4, wherein the fixing part is fixed on the inner door frame support beam by threaded fasteners or rivets.

Technical solution 6. The cabinet body of the outdoor electrical cabinet according to the technical solution 4, wherein the cross section of the inner door frame support beam is U-shaped, and the inner door frame support beam is fixed on the cabinet body in a way that the opening is buckled to the cabinet body.

Beneficial effects: the inner door frame support beam with a U-shaped cross section is lighter in weight, which can reduce the weight increase of the electrical cabinet.

Technical solution 7. The cabinet body of the outdoor electrical cabinet according to the technical solution 4, wherein the inner door frame support beam rests on the side wall of the outer door frame facing the inner side of the cabinet body.

Technical solution 8. The cabinet body of the outdoor electrical cabinet according to technical solution 1 or 2 or 3, wherein the inner door frame has a horizontal bending portion located below the bottom edge of the inner sealing door when the inner sealing door is closed, and the horizontal The height of the bent portion is higher than the dust collecting platform.

Beneficial effects: The above structure forms a stepped structure between the inner door frame and the dust accumulation platform, which can prevent sand and dust from entering the cabinet when the inner sealing door is closed, and better ensure the protection performance.

Technical solution 9. The cabinet body of the outdoor electrical cabinet according to the technical solution 1 or 2 or 3, the inner door frame is provided with a vertical stopper for cooperating with the back of the inner sealing door when the inner sealing door is closed The vertical stop part is provided with a sealing member which is sealingly matched with the back of the inner sealing door.

Technical solution 10. The cabinet body of the outdoor electrical cabinet according to the technical solution 2 or 3, the bottom of the cabinet body is provided with an inner door frame support beam on the side of the outer door frame close to the inside of the cabinet body, and the inner door frame is fixed on the inner door frame. On the inner door frame support beam, the transition platform is formed by the inner door frame support beam.

Technical solution 11. The cabinet body of the outdoor electrical cabinet according to the technical solution 1 or 2 or 3, the front part of the bottom plate of the cabinet body has an upward vertical bending part and an L connected to the vertical bending part The L-shaped bending part and the vertical bending part form a U-shaped structure with an opening downward, and the outer door frame is formed by the L-shaped bending part and the vertical bending part .

Beneficial effects: the use of the scheme is convenient for manufacture and simple in structure.

Technical solution 12. The cabinet body of the outdoor electrical cabinet according to technical solution 1 or 2 or 3, wherein the top and bottom of the outer door frame and the inner door frame are arranged in mirror images up and down.

Beneficial effects: adopting the scheme can reduce the types of parts and components, facilitate mass production, and facilitate assembly.

Description of drawings

Fig. 1 is the schematic diagram of the path of sand and dust entering the inside of the cabinet from the inner door of the outdoor electrical cabinet in the prior art;

2 is a schematic structural diagram of Embodiment 1 of the outdoor electrical cabinet in the present invention;

Fig. 3 is the schematic diagram when the outer sealing door of the outdoor electrical cabinet in Fig. 2 is opened;

Fig. 4 is a partial enlarged view of the bottom of the cabinet in Fig. 2;

5 is a schematic structural diagram of Embodiment 2 of the outdoor electrical cabinet in the present invention;

6 is a schematic structural diagram of Embodiment 3 of the outdoor electrical cabinet in the present invention;

FIG. 7 is a schematic structural diagram of Embodiment 4 of the outdoor electrical cabinet in the present invention.

The names corresponding to the reference signs in the figure are: 10-cabinet body, 11-front cabinet door, 12-back cabinet door, 13-inner door hinge, 14-outer door hinge, 15-operating element, 21-outer sealing door , 22-outer door frame, 23-vertical bending part, 24-L-shaped bending part, 25-seal part, 31-inner sealing door, 32-inner door frame, 33-inner door frame support beam, 34-door frame folding plate , 35-fixed part, 36-bending part, 37-horizontal bending part, 38-vertical stop part, 39-bending connection part, 40-sealing rubber strip, 41-screw.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Embodiment 1 of the outdoor electrical cabinet in the present invention is shown in FIG. 2 to FIG. 4 , which is a field control cabinet applied to the outdoor environment in the power industry, including a cabinet body 10 and electrical equipment arranged in the cabinet body 10. The cabinet body 10 is provided with a front cabinet door 11 and a rear cabinet door 12, the rear cabinet door 12 is only opened during installation or maintenance, and is not opened during operation; the front cabinet door 11 includes an inner sealing door 31 and an outer sealing door 21, and the inner sealing door 31 and the right side of the outer sealing door 21 are respectively connected to the cabinet 10 through the inner door hinge 13 and the outer door hinge 14, the left side of the inner sealing door 31 and the outer sealing door 21 are provided with respective door locks, and the panel of the inner sealing door 31 Electrical operating elements 15 such as opening and closing handles, transfer switches, and indicator lights are installed. During operation, the outer sealing door 21 can be opened to operate the operating elements 15 installed on the panel of the inner sealing door 31 .

Specifically, the outer door frame 22 is formed by bending a plate. The part of the outer door frame 22 located at the bottom of the cabinet body 10 is taken as an example. The front part of the bottom plate of the cabinet body 10 has an upward vertical bending part 23 and a vertical bending part The L-shaped bent portion 24 connected by 23, the L-shaped bent portion 24 and the vertical bent portion 23 form a U-shaped structure with an opening downward, and the outer door frame 22 is formed by the L-shaped bent portion 24 and the vertical bent portion 23. . The structures of the parts of the outer door frame 22 located at the top and the left and right sides of the cabinet 10 are the same as those of the parts located at the bottom of the cabinet 10 , and will not be described one by one here. The end of the L-shaped bent portion 24 is clamped with a sealing member 25 . The sealing member 25 is used for sealingly cooperate with the inner side surface of the door panel of the outer sealing door 21 when the outer sealing door 21 is closed, so as to ensure the sealing performance of the outer sealing door 21 .

The side of the outer door frame 22 close to the interior of the cabinet body 10 is provided with a circle of inner door frame support beams 33, including top support beams, bottom support beams and left and right side support beams located at the top, bottom and left and right sides of the cabinet body 10, respectively. The cross-sections of the door frame support beams 33 are all U-shaped, and are welded and fixed to the cabinet body 10 in such a manner that the opening faces the outside of the cabinet body 10 . The inner door frame supporting beams 33 are respectively provided with door frame folding plates 34. Taking the door frame folding plate 34 at the bottom of the cabinet 10 as an example, the door frame folding plate 34 includes a fixed part fixed on the top surface of the inner door frame supporting beam 33. 35 and a bent portion 36 for forming the inner door frame 32. The fixed part 35 is a plane structure, and the bent part 36 includes a horizontal bent part 37 for being located under the bottom edge of the inner sealing door 31 when the inner sealing door 31 is closed, and also including a horizontal bending part 37 for connecting with the inner sealing door 31 when the inner sealing door 31 is closed. The back of the sealing door 31 stops the matching vertical stopper 38 , and the horizontally bent part 37 and the vertical stopper 38 form an installation groove into which the inner sealing door 31 is embedded. The horizontal bending part 37 of the bending part 36 and the fixing part 35 of the door frame bending plate 34 are connected by a bending connecting part 39, and the bending connecting part 39 makes the bending part 36 form a stepped structure; The side facing the outside of the cabinet body 10 is provided with a sealing rubber strip 40. When the inner sealing door 31 is closed, the sealing rubber strip 40 is compressed by the inner sealing door 31 to form an inner door sealing structure, which can effectively prevent sand and dust from entering the control through the inner sealing surface door. inside the cabinet.

The above-mentioned inner door frame support beam 33 rests on the side wall of the outer door frame 22 facing the inner side of the cabinet body 10, and the fixed part 35 of the door frame flap 34 is fixed to the inner door frame support beam 33 by screws 41. After the inner door frame 32 and the outer door frame 22 A transition platform is formed in the interval between the inner and outer directions, and the top surface of the transition platform is flush with the top surface of the part of the outer door frame 22 located at the bottom of the cabinet body 10 , forming the upper surface smoothly extending outward from the inner door frame 32 to the cabinet corresponding to the outer sealing door 21 Dust platform at the door. A gap filler may be provided at the junction of the door frame flap 34 and the outer door frame 22 to prevent part of sand and dust from being deposited there.

The structure of the parts of the inner door frame 32 located at the top and the left and right sides of the cabinet 10 is the same as that of the parts located at the bottom of the cabinet 10 , and will not be described one by one here.

When operating the operating element 15 installed on the panel of the inner sealing door 31, only the outer sealing door 21 can be opened. At this time, even if the sand and dust enters the cabinet door of the outer sealing door 21, the inner sealing door 31 can also cause the sand and dust to be removed. To the blocking effect, the blocked sand and dust fall on the dust accumulation platform, which can be easily cleaned, ensuring the safe and stable operation of the on-site control cabinet.

The second embodiment of the outdoor electrical cabinet in the present invention is shown in FIG. 5 . The difference between this embodiment and the first embodiment is that the fixing part 35 of the door frame folded plate 34 is fixed to the back of the inner door frame support beam 33 in this embodiment. On the side of the outer door frame 22, the height of the inner door frame support beam 33 is flush with the top surface of the outer door frame 22, and the upper surface of the inner door frame support beam 33 located at the bottom of the cabinet 10 forms a transition platform, and then shares with the outer door frame 22. Forms a dust accumulation platform.

The third embodiment of the outdoor electrical cabinet of the present invention is shown in FIG. 6 . The difference between this embodiment and the first embodiment is that the fixed portion 35 of the door frame folded plate 34 in this embodiment directly extends outward to the corresponding position of the outer door. The dust accumulation platform is formed by the fixed part 35 of the door frame folded plate 34.

The fourth embodiment of the outdoor electrical cabinet of the present invention is shown in FIG. 7 . The difference between this embodiment and the first embodiment is that in this embodiment, there is only space between the bottom edge of the inner sealing door 31 and the dust accumulation platform. To ensure the interval between the normal opening and closing of the inner sealing door 31, the door frame flap 34 only includes the vertical stopper 38 and the vertical stopper which are used to stop and cooperate with the back of the inner sealing door 31 when the inner sealing door 31 is closed. 38 connected to the fixed part 35, the fixed part 35 is a plane structure.

In other embodiments, the door frame flap 34 can also be connected to the inner door frame support beam 33 in other forms, such as riveting or welding. In addition, in other embodiments, the inner door frame support beam 33 and the outer door frame may also have a gap in the front and back, or the inner door frame support beam 33 may not be provided, the inner door frame may be provided separately, and only the smoothness is provided between the inner door frame 32 and the outer door frame 22 Connect the structure to form a dust accumulation platform. Furthermore, in other embodiments, the dust accumulation platform may also extend outward in a downwardly inclined form, and the upper surface of the dust accumulation platform may have a smooth curve.

The embodiment of the cabinet of the outdoor electrical cabinet in the present invention is the cabinet described in the above-mentioned embodiments of the outdoor electrical cabinet, and does not include electrical equipment disposed in the cabinet, and the specific structure will not be repeated here.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the Modifications may be made to the technical solutions described in the foregoing embodiments without creative efforts, or equivalent replacements may be made to some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (14)

1. Outdoor electrical cabinets, including a cabinet body and electrical equipment arranged in the cabinet, the cabinet body is provided with an outer door frame and an inner door frame, the outer door frame and the inner door frame are respectively provided with an outer sealing door and an inner sealing door, and the inner sealing Electric operating elements are installed on the panel of the door, and it is characterized in that: the bottom of the cabinet is provided with a dust accumulation platform on the outer side of the inner door frame, and the upper surface of the dust accumulation platform extends smoothly from the inner door frame to the outer sealing door. Corresponding cabinet door, the inner door frame and the outer door frame have an interval in the inner and outer directions, and a transition platform is arranged in the interval, and the top surface of the transition platform and the top surface of the part of the outer door frame located at the bottom of the cabinet body Smooth transition, the dust accumulation platform is jointly formed by the transition platform and the outer door frame; The bottom of the cabinet body is provided with an inner door frame support beam on the side of the outer door frame close to the inside of the cabinet body, and a door frame folded plate is fixed on the top surface of the inner door frame support beam, and the door frame folded plate includes a fixed inner door frame. The fixed part on the top surface of the support beam and the bent part used to form the inner door frame, the transition platform is formed by the fixed part and the support beam of the inner door frame, or the bottom of the cabinet is close to the outer door frame One side inside the cabinet is provided with an inner door frame support beam, the inner door frame is fixed on the inner door frame support beam, and the transition platform is formed by the inner door frame support beam; The inner door frame supporting beam rests on the side wall of the outer door frame facing the inner side of the cabinet. The height of the bending portion is higher than the dust collecting platform, and the dust collecting platform is exposed in the cabinet. 2 . The outdoor electrical cabinet according to claim 1 , wherein the part of the outer sealing door used to cooperate with the outer door frame is located on the inner side of the outer sealing door, and the outer door frame is located on the top of the part at the bottom of the cabinet. 3 . The surface is a horizontal surface, and the top surface of the transition platform is flush with the top surface of the part of the outer door frame located at the bottom of the cabinet. 3. The outdoor electrical cabinet according to claim 1 or 2, wherein the fixing part is fixed on the inner door frame support beam by threaded fasteners or rivets. 4 . The outdoor electrical cabinet according to claim 1 or 2 , wherein the cross section of the inner door frame support beam is U-shaped, and the inner door frame support beam is fixed on the cabinet body in a manner that the opening is buckled to the cabinet body. 5 . 5. The outdoor electrical cabinet according to claim 1 or 2, characterized in that: the inner door frame is provided with a vertical stop portion for stopping and cooperating with the back of the inner sealing door when the inner sealing door is closed, so The vertical stop part is provided with a sealing member which is sealingly matched with the back of the inner sealing door. 6 . The outdoor electrical cabinet according to claim 1 or 2 , wherein the front part of the bottom plate of the cabinet body has an upward vertical bending part and an L-shaped bending part connected to the vertical bending part. 7 . The L-shaped bent portion and the vertical bent portion form a U-shaped structure with an opening downward, and the outer door frame is formed by the L-shaped bent portion and the vertical bent portion. 7. The outdoor electrical cabinet according to claim 1 or 2, wherein the top and bottom of the outer door frame and the inner door frame are arranged in mirror images up and down. 8. The cabinet body of the outdoor electrical cabinet, the cabinet body is provided with an outer door frame and an inner door frame, the outer door frame and the inner door frame are respectively provided with an outer sealing door and an inner sealing door, and the panel of the inner sealing door is installed with electrical operating elements , characterized in that: the bottom of the cabinet is provided with a dust accumulation platform on the outer side of the inner door frame, and the upper surface of the dust accumulation platform smoothly extends outward from the inner door frame to the cabinet door corresponding to the outer sealing door. The door frame and the outer door frame have an interval in the inner and outer directions, and a transition platform is arranged in the interval, and the top surface of the transition platform and the top surface of the part of the outer door frame located at the bottom of the cabinet body smoothly transition, and the dust accumulation platform is composed of The transition platform and the outer door frame are jointly formed; The bottom of the cabinet body is provided with an inner door frame support beam on the side of the outer door frame close to the inside of the cabinet body, and a door frame folded plate is fixed on the top surface of the inner door frame support beam, and the door frame folded plate includes a fixed inner door frame. The fixed part on the top surface of the support beam and the bent part used to form the inner door frame, the transition platform is formed by the fixed part and the support beam of the inner door frame, or the bottom of the cabinet is close to the outer door frame One side inside the cabinet is provided with an inner door frame support beam, the inner door frame is fixed on the inner door frame support beam, and the transition platform is formed by the inner door frame support beam; The inner door frame supporting beam rests on the side wall of the outer door frame facing the inner side of the cabinet. The height of the bending portion is higher than the dust collecting platform, and the dust collecting platform is exposed in the cabinet. 9 . The cabinet body of an outdoor electrical cabinet according to claim 8 , wherein the part of the outer sealing door used to cooperate with the outer door frame is located on the inner side of the outer sealing door, and the outer door frame is located at the bottom of the cabinet body. 10 . The top surface of the part is a horizontal surface, and the top surface of the transition platform is flush with the top surface of the part of the outer door frame located at the bottom of the cabinet. 10. The cabinet body of an outdoor electrical cabinet according to claim 8 or 9, wherein the fixing part is fixed on the inner door frame support beam by threaded fasteners or rivets. 11. The cabinet body of an outdoor electrical cabinet according to claim 8 or 9, wherein the cross-section of the inner door frame support beam is U-shaped, and the inner door frame support beam is fixed to the cabinet in a manner that the opening is buckled to the cabinet body body. 12. The cabinet body of an outdoor electrical cabinet according to claim 8 or 9, wherein the inner door frame is provided with a vertical stopper for cooperating with the back of the inner sealing door when the inner sealing door is closed The vertical stop part is provided with a sealing member which is sealingly matched with the back of the inner sealing door. 13. The cabinet body of an outdoor electrical cabinet according to claim 8 or 9, wherein the front part of the bottom plate of the cabinet body has an upward vertical bending part and an L connected to the vertical bending part The L-shaped bending part and the vertical bending part form a U-shaped structure with an opening downward, and the outer door frame is formed by the L-shaped bending part and the vertical bending part . 14. The cabinet body of an outdoor electrical cabinet according to claim 8 or 9, wherein the top and bottom of the outer door frame and the inner door frame are arranged in mirror images up and down.

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