Drawing type power distribution cabinet convenient to overhaul

Abstract

The invention discloses a push-pull type power distribution cabinet convenient to overhaul, and relates to the technical field of power distribution cabinets. The supporting structure A and the supporting structure B which are perpendicular to each other in the drawing direction are installed on the base, the front plate, the back plate or the side plate is installed on the outer side of the supporting structure A and the outer side of the supporting structure B respectively, and the top cover is supported on the top of the supporting structure A or the top of the supporting structure B through the telescopic supporting piece. By controlling the drawing of the supporting structure A and the supporting structure B, the front plate, the back plate or the side plates are moved in the direction away from the center of the cabinet body to be unfolded, so that the adaptability of the internal space of the cabinet body is expanded, and a worker can conveniently and smoothly overhaul electrical elements in the cabinet body.

Description

Technical Field

[0001] The invention belongs to the technical field of power distribution cabinets, and in particular relates to a pull-out power distribution cabinet which is easy to maintain. Background Art

[0002] With the growth of electricity demand and the expansion of power grid scale, the requirements for power equipment are getting higher and higher. The emergence of high-voltage distribution cabinets is to meet the power system's needs for control, protection and distribution of high-voltage power equipment.

[0003] There are many electrical components integrated inside the high-voltage distribution cabinet. The staff needs to regularly inspect and maintain the electrical components in the distribution cabinet to eliminate potential faults and ensure the safe operation of the distribution cabinet. Most of the existing distribution cabinets are relatively closed boxes with an inspection door on one side. The internal space of the distribution cabinet is mostly cramped and small. The electrical components installed in the distribution cabinet are often densely packed, and such a small space is very difficult for maintenance staff to move around. In addition, due to the single-sided door, the distribution cabinet is relatively dark, making it difficult for maintenance workers to see the lines clearly, which can easily lead to dangerous situations such as electric shock. For this reason, we propose a distribution cabinet that is easy to maintain.

[0004] For example, China CN202010582479.X discloses a power distribution cabinet that is easy to maintain, including a power distribution cabinet, two flipping mechanisms are fixedly installed on the rear end inner wall of the power distribution cabinet, and the lower ends of the two flipping mechanisms are fixedly installed with a mounting plate, and the bottom end of the power distribution cabinet is provided with a bottom groove, and a moving mechanism is fixedly installed inside the bottom groove, and a connecting rod is fixedly installed at the front end of the moving mechanism, and a lifting mechanism is fixedly installed at one end of the connecting rod away from the moving mechanism. In the present invention, the mounting plate can be turned over by the setting of the flipping mechanism, and the mounting plate can also be pushed forward, thereby expanding the maintenance space, and it is convenient for maintenance personnel to repair the components at the rear of the mounting plate. The lifting mechanism can be set to increase the height of the maintenance personnel, and it is convenient for maintenance personnel to repair the upper part of the power distribution cabinet. The lifting mechanism can be pushed out and pulled back by the setting of the moving mechanism, and the lifting mechanism can also be moved left and right, thereby improving the flexibility of the lifting mechanism and facilitating comprehensive maintenance by maintenance personnel; however, it still has the problem of inconvenient maintenance. Summary of the invention

[0005] The object of the present invention is to provide a pull-out type power distribution cabinet which is easy to maintain, by installing a support structure A and a support structure B whose pulling directions are perpendicular to each other on the base, and installing a front panel, a back panel or a side panel on the outside of the support structure A and the support structure B respectively, and a top cover is supported on the top of the support structure A or the support structure B by a telescopic support member, thereby solving the problems raised by the existing background technology.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a pull-out type power distribution cabinet which is easy to maintain, comprising a base, a support structure A arranged on the base, and a support structure B arranged on the support structure A; the support structure A and the support structure B have the same structure, and both comprise two support modules arranged parallel to each other; the support module comprises a support beam A and a support beam B respectively located at the top and the bottom, movable rods A are telescopically arranged at both ends of the support beam A, movable rods B are telescopically arranged at both ends of the support beam B, a support rod is connected between the movable rod B and the movable rod A located at the same end of the support beam A; a front plate, a back plate or a side plate is installed between the two support rods located at the same end of the support beam A; when installed, the length directions of the support beams A of the support structures A and B are perpendicular to each other.

[0007] Furthermore, the support beam A of the support structure B is installed on the upper surface of the base, and the support beam A of the support structure A is fixed on the upper surface of the support beam A of the support structure B; the support beam B of the support structure A is fixed on the upper surface of the support beam B of the support structure B.

[0008] Furthermore, the top of the support structure A or the support structure B is supported with a top cover through a telescopic support member; the telescopic support member includes an inner sleeve and an outer sleeve which are sleeved with each other, and a spring A is connected between the inner sleeve and the outer sleeve.

[0009] Furthermore, the inner top side surface of the top cover is provided with four groups of hook structures hooked on the top support beam B of the support structure A or the support structure B, and a control structure for controlling the hook structure to move; the hook structure includes a U-shaped groove plate arranged on the inner top side surface of the top cover, a cover plate is arranged at one end of the U-shaped groove plate, the cover plate and the U-shaped groove plate cooperate to form a rectangular channel, and a fixing ring is arranged in the rectangular channel; one side of the fixing ring is connected to a movable arm sliding along the length direction of the rectangular channel through a spring, one end of the movable arm is connected to a driving arm sliding along the length direction of the rectangular channel through a connecting rod passing through the fixing ring, the other end of the movable arm is connected to a vertical rod perpendicular to the inner top side surface of the top cover, and the end of the vertical rod is provided with a protrusion hooked on the support beam B; the control structure includes a sleeve arranged on the inner top side surface of the top cover, an operating rod is movably arranged in the sleeve, and four traction ropes are connected to the top end of the operating rod, and the traction rope passes through an opening opened at the top of the sleeve and is connected to one end of the driving arm.

[0010] Furthermore, a threaded structure A is provided on the inner wall surface of one end of the sleeve, and a threaded structure B threadedly connected to the threaded structure A is provided on the circumferential side of the end of the operating rod; a connecting column is rotatably installed on the end surface of the operating rod, and four connecting bolts vertical to the connecting columns are provided at the end of the connecting column, and one end of the traction rope is connected to the connecting bolt; guide slides A are provided on both inner side walls of the U-shaped groove plate along their length direction, and guide slide grooves A cooperating with the guide slides A are provided on the movable arms.

[0011] Furthermore, a sealing structure A is provided on both edge sides of the inner wall of the side panel, and a sealing structure B cooperating with the sealing structure A is provided on both edge sides of the inner wall of the front panel and the back panel; the sealing structure A includes a rectangular ridge A provided on the inner wall of the side panel, and a sealing strip A is provided on one side of the rectangular ridge A to abut against the front panel or the back panel; the sealing structure B is a rectangular ridge B provided on the inner wall of the front panel and the back panel; a sealing strip B is provided on the other side of the rectangular ridge A to abut against one side of the rectangular ridge B, and the sealing strip B and the sealing strip A are respectively provided on the adjacent two side walls of the rectangular ridge A.

[0012] Furthermore, the base includes a bottom plate A located at the bottom, a bottom plate B is arranged on the upper surface of the bottom plate A, and a bottom plate C is arranged on the upper surface of the bottom plate B; the bottom plate A, bottom plate B and bottom plate C are integrally formed; when the front plate, back plate and side plate are in the storage state, their inner walls are respectively against the four side walls of the bottom plate B; the support beam A of the support structure B is installed on the upper surface of the bottom plate C.

[0013] Furthermore, two first concave cavities are respectively provided on one opposite side wall of the bottom plate B, and two second concave cavities are respectively provided on the other opposite side wall; the first concave cavity and the second concave cavity located at the corner side of the bottom plate B are connected, and the length directions of the first concave cavity and the second concave cavity are perpendicular to each other; the bottom side surface of the first concave cavity is connected to the movable block through a spring B, and a bayonet is provided on one side of the movable block; an annular cavity is provided in the second concave cavity, a limiting rod is provided through the second concave cavity, a convex ring is provided on the circumference of the limiting rod, and a spring C is connected between the convex ring and the annular cavity.

[0014] Furthermore, an installation cavity is provided in the support beam A, a gear A is provided in the middle of the installation cavity, rectangular openings for the movable rod A to pass through are respectively provided at both ends of the installation cavity, a rectangular groove is provided on one side of the movable rod A along its length direction, a rack meshing with the gear A is installed in the rectangular groove; guide grooves B are provided on both sides of the movable rod A, and guide slide bars B cooperating with the guide grooves B are provided on both sides of the movable rod A; and movable sockets cooperating with the two movable rods B are provided on the support beam B.

[0015] Furthermore, a door opening is provided on the front panel, and a switch door is hinged at the door opening; a limiting mechanism is arranged at the junction of the support structure A and the support structure B near one side of the front panel, and the limiting mechanism comprises an L-shaped rod connected to the support beam A of the support structure A through two elastic telescopic parts, and limiting pins are respectively arranged at both ends of the L-shaped rod and inserted into the support beams A of the support structure A and the support structure B; a through hole is arranged on the support beam A for the limiting pin to pass through, and a plurality of pin holes for the limiting pin to be inserted are arranged at equal intervals on one side of the movable rod A along its length direction; an internal threaded sleeve is arranged on the support beam A directly below the L-shaped rod, and a locking bolt passing through the L-shaped rod is threadedly connected to the internal threaded sleeve.

[0016] The present invention has the following beneficial effects: The present invention has a support structure A and a support structure B installed on a base in perpendicular pulling directions, and a front panel, a back panel or a side panel are installed on the outer sides of the support structure A and the support structure B respectively, and a top cover is supported on the top of the support structure A or the support structure B by a telescopic support member. When it is actually in use, by controlling the pulling of the support structure A and the support structure B, the front panel, the back panel or the side panel are moved away from the center direction of the cabinet and then unfolded, so that the internal space of the cabinet can be adaptively expanded, so that the staff can smoothly perform maintenance operations on the electrical components inside the cabinet.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the power distribution cabinet of the present invention; Figure 2 for Figure 1 A partial enlarged view of the middle part; Figure 3 for Figure 1 The main view of Figure 4 for Figure 3 Sectional view at AA; Figure 5 for Figure 4 A partial enlarged view of point B in the middle; Figure 6 for Figure 3 Sectional view at the middle BB; Figure 7 for Figure 6 A partial enlarged view of point E in the middle; Figure 8 It is a partial connection schematic diagram of the hook structure of the present invention; Fig. 9 The structure of the power distribution cabinet of the present invention is shown in FIG. Figure 1 ; Fig.10 The structure of the power distribution cabinet of the present invention is shown in FIG. Figure 2 ; Fig.11 This is a schematic diagram of the structure of the bottom plate B of the present invention; Fig.12 for Fig.11 A partial enlarged view of point C in the middle; Fig.13 The structure of the power distribution cabinet of the present invention is shown in FIG. Figure 3 ; Fig.14 for Fig.13 A partial enlarged view of point D in the middle; Fig.15 This is a schematic diagram of the support module structure of the present invention; Fig.16 This is a cross-sectional view of the support beam A of the present invention; Fig.17 The front panel, back panel and side panel storage process of the present invention Figure 1 ; Fig.18 The front panel, back panel and side panel storage process of the present invention Figure 2 ; Fig.19 The front panel, back panel and side panel storage process of the present invention Figure 3 . DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] See also Figure 1-4 As shown, the present invention is a pull-out type power distribution cabinet that is easy to maintain, including a base 1, a support structure A2 welded and installed on the base 1, and a support structure B3 welded and installed on the support structure A2. The support structure A2 and the support structure B3 have the same structure and both include two support modules arranged parallel to each other. The support modules are rectangular structures, such as Fig.15 The support module includes a support beam A20 and a support beam B26 respectively located at the top and the bottom, and movable rods A23 are retractably provided at both ends of the support beam A20, and movable rods B25 are retractably provided at both ends of the support beam B26. A support rod 24 is connected between the movable rod B25 and the movable rod A23 located at the same end of the support beam A20, and the support rod 24, the movable rod B25 and the movable rod A23 are matched to form a U shape, so that when in use, the movable rod B25 and the movable rod A23 can be pulled and moved in the support beam B26 and the support beam A20 respectively by controlling the movable rod B25 and the movable rod A23, and the pulling directions of the support structure A2 and the support structure B3 are perpendicular to each other.

[0023] In order to form an integral distribution cabinet body, side panels 13 are respectively installed on both sides of the support structure A2, and the front panel 11 and the back panel 12 are respectively installed on both sides of the support structure B3; specifically, the front panel 11, the back panel 12 and the side panels 13 are all welded, riveted or bolted to the support rod 24.

[0024] During installation, the length directions of the support beams A20 of the support structure A2 and the support structure B3 are perpendicular to each other; then, during use, the front panel 11, the back panel 12 and the side panel 13 are controlled to move away from the center of the cabinet along the length direction of the movable rod A23 and the support beam A20, thereby controlling the front panel 11, the back panel 12 and the side panel 13 to unfold, so that the internal space of the cabinet can be adaptively expanded, thereby facilitating the maintenance of the electrical components inside the cabinet.

[0025] In a specific embodiment, Figure 8-9 The support beam A20 of the support structure B3 is welded and installed on the upper surface of the base 1, the support beam A20 of the support structure A2 is welded and fixed on the upper surface of the support beam A20 of the support structure B3, and the support beam B26 of the support structure A2 and the support beam B26 of the support structure B3 are welded together.

[0026] At the same time, the pull-out type power distribution cabinet provided also includes a top cover 4 installed on the top of the support structure A2 or the support structure B3 through a telescopic support member 40. In the retracted state, the top ends of the front panel 11, the back panel 12 and the side panel 13 are all located inside the top cover 4. Then, when controlling the front panel 11, the back panel 12 and the side panel 13 to be unfolded, the top cover 4 is controlled first. At this time, the bottom end surface of the water retaining edge of the top cover 4 is higher than the top end surfaces of the front panel 11, the back panel 12 and the side panel 13. Then, the front panel 11, the back panel 12 and the side panel 13 are controlled to be unfolded outward.

[0027] In order to conveniently control the upward and downward movement of the top cover 4 during use, the present invention provides the following three methods: Mode 1: The telescopic support member 40 uses a telescopic cylinder or an electric telescopic rod, that is, when in use, the top cover 4 is driven to move up and down by controlling the extension and contraction of the telescopic cylinder or the electric telescopic rod.

[0028] Method 2: The telescopic support member 40 uses a telescopic sleeve rod, and a fixing bolt is provided on the telescopic sleeve rod. When in use, an external force controls the top cover 4 to move up and down, and the fixing bolt is rotated to limit the support height of the telescopic sleeve rod.

[0029] Method three: The telescopic support member 40 includes an inner sleeve and an outer sleeve which are socketed with each other, and a spring A is connected between the inner sleeve and the outer sleeve; that is, when in use, when in the stored state, the telescopic support member 40 is in a compressed state, and when the telescopic support member 40 is in a natural state, the top cover 4 is pushed upward and is in an expanded state.

[0030] Based on the third method, in order to conveniently control the telescopic support member 40 to be extended and retracted, and control the top cover 4 to be in the storage or deployment state, as shown in FIG. Figure 3 As shown in Figures 6-8, the inner top side surface of the top cover 4 provided by the present invention is provided with four groups of hook structures hooked on the top support beam B26 of the support structure A2 or the support structure B3, and a control structure for controlling the hook structure to move; the hook structure includes a U-shaped groove plate 50 arranged on the inner top side surface of the top cover 4, a cover plate 51 is arranged at one end of the U-shaped groove plate 50, and the cover plate 51 and the U-shaped groove plate 50 cooperate to form a rectangular channel, and a fixing ring 502 is arranged in the rectangular channel; one side of the fixing ring 502 is connected to a movable arm 53 sliding along the length direction of the rectangular channel through a spring 503. One end of the movable arm 53 is connected to the driving arm 52 sliding along the length direction of the rectangular channel through a connecting rod 504 passing through the fixed ring 502, and the other end of the movable arm 53 is connected to a vertical rod 54 perpendicular to the inner top side of the top cover 4, and the end of the vertical rod 54 is provided with a protrusion 541 hooked on the support beam B26; the control structure includes a sleeve 56 arranged on the inner top side of the top cover 4, and an operating rod 57 is movably arranged in the sleeve 56, and four traction ropes 55 are connected to the top of the operating rod 57, and the traction ropes 55 pass through the opening opened at the top of the sleeve 56 and are connected to one end of the driving arm 52.

[0031] Furthermore, in the above, by controlling the operating rod 57 to move downward, the movable arm 53 is driven to move along its length direction by controlling the traction rope 55, thereby facilitating the control of the protrusion 541 to move toward the side away from the support beam B26; when the external force controlling the operating rod 57 to move downward is removed, the movable arm 53 moves along its length direction under the action of the spring 503, and the protrusion 541 moves toward the side close to the support beam B26; when the protrusion 541 is located below the support beam B26 at this time, it is hooked on the bottom side of the support beam B26.

[0032] In order to facilitate the control of the up and down movement of the top cover 4 and the control of the movable arm 53 to maintain the movement during use, a threaded structure A is provided on the inner wall surface of one end of the sleeve 56, and a threaded structure B threadedly connected to the threaded structure A is provided on the circumferential side of the end of the operating rod 57; a connecting column 571 is rotatably installed on the end surface of the operating rod 57, and four connecting bolts 572 perpendicular to the connecting columns 571 are provided at the end of the connecting column 571, and one end of the traction rope 55 is connected to the connecting bolt 572; the two inner side walls of the U-shaped groove plate 50 are provided with guide slides A501 along the length direction thereof, and the movable arms 53 are provided with guide slide grooves A531 cooperating with the guide slides A501.

[0033] When the cabinet is used outdoors, in order to prevent rainwater from entering the cabinet through the gaps between the side panels 13 and the front panel 11, a sealing structure A is provided on both edge sides of the inner side wall of the side panel 13, and a sealing structure B matching the sealing structure A is provided on both edge sides of the inner side wall of the front panel 11 and the back panel 12; Figure 3-5 The specific sealing structure A includes a rectangular ridge A14 arranged on the inner wall of the side panel 13, and a sealing strip A141 is arranged on one side of the rectangular ridge A14 to abut against the front panel 11 or the back panel 12; the sealing structure B is a rectangular ridge B15 arranged on the inner wall of the front panel 11 and the back panel 12; the other side of the rectangular ridge A14 is provided with a sealing strip B142 abutting against one side of the rectangular ridge B15, and the sealing strip B142 and the sealing strip A141 are respectively arranged on the adjacent two side walls of the rectangular ridge A14.

[0034] like Figure 1-2 The base 1 includes a bottom plate A10 located at the bottom, a bottom plate B101 is arranged on the upper surface of the bottom plate A10, and a bottom plate C102 is arranged on the upper surface of the bottom plate B101; the bottom plate A10, the bottom plate B101 and the bottom plate C102 are integrally formed; when the front plate 11, the back plate 12 and the side plate 13 are in the storage state, their inner side walls are respectively against the four side walls of the bottom plate B101; the support beam A20 of the support structure B3 is installed on the upper surface of the bottom plate C102.

[0035] Based on the above, in order to facilitate the storage of the front plate 11, the back plate 12 and the side plate 13, the sealing structure A and the sealing structure B are controlled to cooperate with each other to seal, such as Figure 10-11In the present invention, two first concave cavities 60 are respectively arranged on two opposite side walls of the bottom plate B101, and two second concave cavities 61 are respectively arranged on the other opposite side walls; the first concave cavity 60 and the second concave cavity 61 located at the corner side of the bottom plate B101 are connected, and the length directions of the first concave cavity 60 and the second concave cavity 61 are perpendicular; the bottom side surface of the first concave cavity 60 is connected to the movable block 63 through the spring B601, and a bayonet 631 is arranged on one side of the movable block 63; an annular cavity 611 is arranged in the second concave cavity 61, and a limiting rod 62 is arranged through the second concave cavity 61, a convex ring 621 is arranged on the circumference of the limiting rod 62, and a spring C622 is connected between the convex ring 621 and the annular cavity 611.

[0036] Based on the arrangement of the first cavity 60 and the second cavity 61, when the front plate 11, the back plate 12 and the side plate 13 are controlled to be stored during use; Figure 17-19 As shown, the side panel 13 is first controlled to be retracted inwardly until the inner side of the side panel 13 abuts against the end face of the limit rod 62, and then the front panel 11 and the back panel 12 are controlled to be retracted inwardly until the inner wall surfaces of the front panel 11 and the back panel 12 abut against the outer peripheral side wall of the bottom panel B101, and then the side panel 13 is controlled to be retracted inwardly until the inner side of the side panel 13 abuts against the outer peripheral side wall of the bottom panel B101, and at this time, one end of the limit rod 62 is inserted into the bayonet 631.

[0037] It can be known that, in a specific embodiment, in order to control the two side panels 13 to move synchronously inward and then outward during use, and to control the front panel 11 and the back panel 12 to move synchronously inward and then outward during use, as shown in FIG. Figure 15-16 The support beam A20 provided by the present invention is provided with an installation cavity 21, a gear A22 is provided in the middle of the installation cavity 21, and rectangular openings 201 for the movable rod A23 to pass through are respectively provided at both ends of the installation cavity 21, a rectangular groove 231 is provided on one side of the movable rod A23 along its length direction, and a rack 232 meshing with the gear A22 is installed in the rectangular groove 231; guide grooves B are provided on both sides of the movable rod A23, and guide slides B24 cooperating with the guide grooves B are provided on both sides of the movable rod A23; and movable sockets cooperating with the two movable rods B25 are provided on the support beam B26.

[0038] Based on the above, in order to fix the positions of the front panel 11, the back panel 12 and the side panel 13 in the unfolded or retracted state during use, and to avoid abnormal control of the unfolding or retracting of the front panel 11, the back panel 12 and the side panel 13, such as Figure 13-14The present invention provides a door opening 111 on the front panel 11, and a switch door is hinged at the door opening 111; a limit mechanism is provided at the junction of the support structure A2 and the support structure B3 near one side of the front panel 11, and the limit mechanism includes an L-shaped rod 30 connected to the support beam A20 of the support structure A2 through two elastic telescopic members 31, and limit pins 35 are respectively provided at both ends of the L-shaped rod 30 and inserted into the support beams A20 of the support structure A2 and the support structure B3; a through hole 202 is provided on the support beam A20 for the limit pin 35 to pass through, and one side of the movable rod A23 is along A number of pin holes 233 for inserting limit pins 35 are arranged at equal intervals in its length direction; an internal threaded sleeve 32 is arranged on the support beam A20 directly below the L-shaped rod 30, and a locking bolt 33 that passes through the L-shaped rod 30 is threadedly connected to the internal threaded sleeve 32. When in use, the locking bolt 33 is rotated to drive the L-shaped rod 30 to move downward, thereby driving the two limit pins 35 located at both ends of the L-shaped rod 30 to be inserted into the pin holes 233 corresponding to the support structure A2 and the support structure B3, thereby limiting the pulling and pulling activities of the support structure A2 and the support structure B3.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pull-out power distribution cabinet that is easy to maintain, characterized in that: It comprises a base (1), a support structure A (2) arranged on the base (1), and a support structure B (3) arranged on the support structure A (2); The support structure A (2) and the support structure B (3) have the same structure, and both include two support modules arranged parallel to each other; The support module comprises a support beam A (20) and a support beam B (26) respectively located at the top and the bottom, movable rods A (23) are retractably provided at both ends of the support beam A (20), movable rods B (25) are retractably provided at both ends of the support beam B (26), and a support rod (24) is connected between the movable rod B (25) and the movable rod A (23) located at the same end of the support beam A (20); A front plate (11), a back plate (12) or a side plate (13) is installed between two support rods (24) located at the same end of the support beam A (20); The top of the support structure A (2) or the support structure B (3) is supported by a top cover (4) via a telescopic support member (40); During installation, the length directions of the support beams A (20) of the support structure A (2) and the support structure B (3) are perpendicular to each other.

2. A pull-out power distribution cabinet that is easy to maintain according to claim 1, characterized in that: The support beam A (20) of the support structure B (3) is mounted on the upper surface of the base (1); the support beam A (20) of the support structure A (2) is fixed on the upper surface of the support beam A (20) of the support structure B (3); and the support beam B (26) of the support structure A (2) is fixed on the upper surface of the support beam B (26) of the support structure B (3).

3. The pull-out power distribution cabinet that is easy to maintain according to claim 1 is characterized in that: The telescopic support member (40) comprises an inner sleeve and an outer sleeve which are sleeved together, and a spring A is connected between the inner sleeve and the outer sleeve.

4. The pull-out type power distribution cabinet that is easy to maintain according to claim 3 is characterized in that: The inner top side surface of the top cover (4) is provided with four sets of hook structures hooked on the top support beam B (26) of the support structure A (2) or the support structure B (3), and a control structure for controlling the action of the hook structures; The hook structure comprises a U-shaped groove plate (50) arranged on the inner top side surface of the top cover (4); a cover plate (51) is arranged at one end of the U-shaped groove plate (50); the cover plate (51) and the U-shaped groove plate (50) cooperate to form a rectangular channel; a fixing ring (502) is arranged in the rectangular channel; one side of the fixing ring (502) is connected to a movable arm (53) sliding along the length direction of the rectangular channel via a spring (503); one end of the movable arm (53) is connected to a driving arm (52) sliding along the length direction of the rectangular channel via a connecting rod (504) penetrating the fixing ring (502); the other end of the movable arm (53) is connected to a vertical rod (54) perpendicular to the inner top side surface of the top cover (4); the end of the vertical rod (54) is provided with a protrusion (541) hooked on the support beam B (26); The control structure comprises a sleeve (56) arranged on the top side of the top cover (4), an operating rod (57) movably arranged in the sleeve (56), the top end of the operating rod (57) being connected to four traction ropes (55), the traction ropes (55) passing through an opening formed at the top of the sleeve (56) and being connected to one end of a driving arm (52).

5. The pull-out type power distribution cabinet that is easy to maintain according to claim 4 is characterized in that: A thread structure A is provided on the inner wall surface of one end of the sleeve (56), and a thread structure B threadably connected to the thread structure A is provided on the circumferential side of the end of the operating rod (57); A connecting column (571) is rotatably mounted on the end surface of the operating rod (57), and four connecting bolts (572) perpendicular to the connecting column (571) are arranged at the end of the connecting column (571), and one end of the traction rope (55) is connected to the connecting bolt (572); Both inner side walls of the U-shaped groove plate (50) are provided with guide slide bars A (501) along the length direction thereof, and both movable arms (53) are provided with guide slide grooves A (531) cooperating with the guide slide bars A (501).

6. The pull-out type power distribution cabinet that is easy to maintain according to claim 1, characterized in that: Both edge sides of the inner side wall of the side plate (13) are provided with a sealing structure A, and both edge sides of the inner side wall of the front plate (11) and the back plate (12) are provided with a sealing structure B that cooperates with the sealing structure A; The sealing structure A comprises a rectangular ridge A (14) arranged on the inner wall of the side plate (13), and a sealing strip A (141) is arranged on one side of the rectangular ridge A (14) to abut against the front plate (11) or the back plate (12); the sealing structure B is a rectangular ridge B (15) arranged on the inner wall of the front plate (11) and the back plate (12); A sealing strip B (142) is provided on the other side of the rectangular convex ridge A (14) and abuts against one side of the rectangular convex ridge B (15). The sealing strip B (142) and the sealing strip A (141) are respectively provided on two adjacent side walls of the rectangular convex ridge A (14).

7. The pull-out power distribution cabinet that is easy to maintain according to claim 1 is characterized in that: The base (1) comprises a bottom plate A (10) located at the bottom, a bottom plate B (101) is arranged on the upper surface of the bottom plate A (10), and a bottom plate C (102) is arranged on the upper surface of the bottom plate B (101); The bottom plate A (10), the bottom plate B (101) and the bottom plate C (102) are integrally formed; When the front plate (11), the back plate (12) and the side plate (13) are in a stored state, their inner side walls respectively abut against the four side walls of the bottom plate B (101); The support beam A (20) of the support structure B (3) is installed on the upper surface of the base plate C (102).

8. The pull-out type power distribution cabinet that is easy to maintain according to claim 7, characterized in that: Two first concave cavities (60) are respectively arranged on two opposite side walls of the bottom plate B (101), and two second concave cavities (61) are respectively arranged on the other opposite side walls; The first concave cavity (60) and the second concave cavity (61) located at the corner side of the bottom plate B (101) are connected, and the length directions of the first concave cavity (60) and the second concave cavity (61) are perpendicular to each other; The bottom side surface of the first concave cavity (60) is connected to the movable block (63) via a spring B (601), and a bayonet (631) is provided on one side of the movable block (63); An annular cavity (611) is arranged in the second concave cavity (61), a limiting rod (62) is arranged through the second concave cavity (61), a convex ring (621) is arranged on the circumference of the limiting rod (62), and a spring C (622) is connected between the convex ring (621) and the annular cavity (611).

9. The pull-out type power distribution cabinet that is easy to maintain according to claim 1, characterized in that: The support beam A (20) is provided with an installation cavity (21), a gear A (22) is provided in the middle of the installation cavity (21), rectangular openings (201) for the movable rod A (23) to pass through are provided at both ends of the installation cavity (21), a rectangular groove (231) is provided on one side of the movable rod A (23) along its length direction, a rack (232) meshing with the gear A (22) is installed in the rectangular groove (231); guide grooves B are provided on both sides of the movable rod A (23), and guide slide bars B (24) cooperating with the guide grooves B are provided on both sides of the movable rod A (23); The support beam B (26) is provided with a movable socket which is movably matched with the two movable rods B (25).

10. The pull-out type power distribution cabinet convenient for maintenance according to claim 9, characterized in that: A door opening (111) is provided on the front plate (11), and a switch door is hingedly connected to the door opening (111); A limiting mechanism is provided at the junction of the support structure A (2) and the support structure B (3) close to one side of the front plate (11), the limiting mechanism comprising an L-shaped rod (30) connected to the support beam A (20) of the support structure A (2) via two elastic telescopic members (31), and limiting pin rods (35) are respectively provided at both ends of the L-shaped rod (30) and are inserted into the support beams A (20) of the support structure A (2) and the support structure B (3); The support beam A (20) is provided with a through hole (202) for the limiting pin rod (35) to pass through, and a plurality of pin holes (233) for the limiting pin rod (35) to be inserted are provided at equal intervals along the length direction of one side of the movable rod A (23); An internal thread sleeve (32) is provided on the support beam A (20) located directly below the L-shaped rod (30), and a locking bolt (33) passing through the L-shaped rod (30) is threadedly connected to the internal thread sleeve (32).

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