A substation that is easy to maintain

Abstract

The present invention relates to the technical field of substation equipment, and more particularly to a maintenance-friendly substation comprising a housing and an electrical cabinet. The bottom of the electrical cabinet slides with the housing via a retractable first and second slide rail assemblies. The second slide rail assembly comprises a sliding member mounted on the bottom of the electrical cabinet, and an outer rail body mounted on the electrical cabinet. A first guide member matching the sliding member is mounted on the top of the outer rail body. A telescopic frame is mounted within the outer rail body. A second guide member matching the first guide member is mounted within the telescopic frame and can be raised and lowered. The telescopic frame is provided with retractable legs. In the present invention, by installing the first and second slide rail assemblies, the electrical cabinet can be pulled out of the substation cabinet, allowing for repair and replacement of components located on the back of the cabinet.

Description

Technical Field

[0001] The present invention relates to the technical field of power transformation equipment, and in particular to a maintenance-friendly substation. Background Art

[0002] A box-type substation, also known as a prefabricated substation or prefabricated substation, organically combines transformer step-down and low-voltage power distribution functions within a single steel-structured box. Typically, a box-type substation houses a dry-type transformer and several high- and low-voltage electrical cabinets. Due to the limited internal space of a box-type substation, the cabinets are tightly spaced, making maintenance difficult, especially when accessing components on the back of the cabinets. Summary of the Invention

[0003] In order to solve the defects in the prior art, the present invention provides a substation that is easy to maintain, which is specifically achieved through the following technical solutions:

[0004] The cam is mounted on a top of the chassis and has a first end for mounting the cam on a base, the second end for mounting the cam being mounted on a bottom surface of the chassis and the second end for mounting the cam on a bottom surface of the chassis.

[0005] A plurality of first push blocks are fixedly installed on the bottom of the second guide member, and a first inclined wall is provided at the bottom of the first push block. A rotatable screw is installed in the telescopic frame, and second push blocks corresponding to the first push blocks are installed on the screw. A second inclined wall matching the first inclined wall is provided on the top of the second push block, and the bottom of the second push block is slidably engaged with the telescopic frame.

[0006] First guide blocks are fixedly installed on both sides of the first pushing block, and guide rails that slide with the first guide blocks are installed in the telescopic frame, and the guide rails are vertically arranged.

[0007] At least one sliding rod parallel to the lead screw is fixedly installed in the telescopic frame, and the sliding rod is slidably matched with the second push block.

[0008] A vertical internal threaded through hole is provided on the limiting member, and a locking bolt is installed in the internal threaded through hole; after the locking bolt is tightened, the bottom thereof abuts against the first guide member or the first guide member to achieve locking of the limiting member.

[0009] The first guide member is a convex beam installed on the top of the outer rail body, and the second guide member is a telescopic beam. When the telescopic beam is raised, the top is flush with the top of the convex beam.

[0010] A hook is fixedly installed on the second end of the pull rod, a connecting ring is fixedly installed on the first end of the pull rod, and the connecting ring is installed on the pull ring located on the top of the electrical cabinet. A hanging hole matching the hook is opened on the box body.

[0011] The first slide rail assembly adopts a drawer slide rail.

[0012] A partition is installed in the middle of the box body, and a stud is installed on the partition. An ear plate is fixedly installed on the side wall of the electrical cabinet. After the electrical cabinet is pushed into the box body, the stud passes through the ear plate and a nut is installed.

[0013] The sliding component is a roller assembly.

[0014] The technical solution of the present invention has the following advantages:

[0015] In the present invention, by installing the first slide rail assembly and the second slide rail assembly, the electrical cabinet can be pulled out from the cabinet body of the transformer substation, and the components located at the back of the electrical cabinet can be repaired and replaced.

[0016] The second slide rail assembly is installed with a telescopic frame, which not only ensures that the entire slide rail has sufficient length, but also enables the telescopic frame to be folded up when not in use, thus saving space.

[0017] Installing auxiliary positioning components can effectively maintain the stability of the electrical cabinet during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of the main structure of the first embodiment of the present invention;

[0021] Figure 3Schematic diagram of the coordination relationship between the electrical cabinet, the first slide rail assembly, and the second slide rail assembly;

[0022] Figure 4 for Figure 3 Schematic diagram of the structure at A in the middle;

[0023] Figure 5 for Figure 3 Schematic diagram of the structure at B in the middle;

[0024] Figure 6 for Figure 3 Schematic diagram of the structure at C in the middle;

[0025] Figure 7 Schematic diagram of the structure of the second slide rail;

[0026] Figure 8 Schematic diagram of the main structure of the second slide rail;

[0027] Figure 9 Schematic diagram of the structure of the roller assembly;

[0028] Figure 10 Schematic diagram of the structure of the outer rail body;

[0029] Figure 11 It is a structural diagram of the telescopic beam;

[0030] Figure 12 for Figure 11 Schematic diagram of the structure at D in the middle;

[0031] Figure 13 Schematic diagram of the telescopic frame structure Figure 1 ;

[0032] Figure 14 Schematic diagram of the telescopic frame structure Figure 2 ;

[0033] Figure 15 for Figure 14 Schematic diagram of the structure at E in the middle;

[0034] Figure 16 is a structural diagram of the first limiting member;

[0035] Figure 17 is a structural diagram of the second limiting member;

[0036] Figure 18 This is a schematic diagram of the main structure of embodiment 2 of the present invention.

[0037] In the figure, 1-box;

[0038] 2-Dry-type transformer;

[0039] 3-partition;

[0040] 4-electrical cabinet, 401-ear plate, 402-stud;

[0041] 5-Box door;

[0042] 6- bottom plate;

[0043] 7-first slide rail assembly, 701-crossbeam, 702-suspender rod, 703-first slide rail;

[0044] 8-Second slide rail assembly, 801-Second slide rail, 802-Roller assembly, 803-Outer rail body, 804-Protruding beam, 805-Telescopic frame, 806-First limiting member, 807-Second limiting member, 808-Wheel body, 809-Wheel seat, 810-Sliding hole, 811-Limiting groove, 812-First accommodating groove, 813-Second accommodating groove, 814-Third accommodating groove, 815-Telescopic beam, 816-First inclined wall, 817-First guide block, 818-First push block, 819 - second limiting groove, 820 - first limiting ridge, 821 - guide plate, 822 - lead screw, 823 - slide rod, 824 - second push block, 825 - handle, 826 - hexagon socket hole, 827 - support leg, 828 - first limiting hole, 829 - hinged column, 830 - limiting bolt, 831 - guide rail, 832 - limiting block, 833 - ridge, 834 - locking bolt, 835 - slide groove, 836 - second limiting ridge, 837 - first connecting rod, 838 - first through hole;

[0045] 9- auxiliary positioning assembly, 901- pull rod, 902- hook, 903- pull ring, 904- connecting ring. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the modules or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0049] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] As attached Figure 1 As shown, the present invention provides a substation that is easy to maintain. The substation is a box-type substation, comprising a box body 1 equipped with several doors 5. A bottom plate 6 is fixedly mounted on the bottom of the box body 1, and a partition 3 is fixedly mounted inside the box body 1. The partition 3 is used to provide a fixing point for various conductors. A dry-type transformer 2 is fixedly mounted on the bottom plate 6 by bolts.

[0051] Several electrical cabinets 4 are also installed in the box 1, and only one of them is shown in the accompanying drawings of the present invention. Figure 2 As shown, the top of the electrical cabinet 4 slides with the housing 1 via a first slide rail assembly 7, and the bottom of the electrical cabinet 4 slides with the housing 1 via a second slide rail assembly 8. By installing the first and second slide rail assemblies 7 and 8, the electrical cabinet 4 can be pushed into or pulled out of the housing 1, making it easier to maintain the electrical cabinet 4.

[0052] As attached Figure 3 and attached Figure 4 As shown, the first slide rail assembly 7 includes a crossbeam 701, and a plurality of vertical suspension rods 702 are fixedly installed on the top of the crossbeam 701. The top of the suspension rod 702 is provided with a threaded section. During installation, the threaded section passes through the reserved hole on the support beam of the box body 1, and then the nut is installed to achieve the fixed installation of the crossbeam 701.

[0053] A first slide rail 703 is fixedly mounted on the bottom of the crossbeam 701 . The structure of the first slide rail 703 is the same as that of the drawer slide rail, and details thereof will not be repeated here.

[0054] The fixed portion of the first slide rail 703 is fixed to the bottom of the crossbeam 701 by bolts, and the telescopic portion is fixed to the top of the electrical cabinet 4 by bolts.

[0055] The structure of the second slide rail assembly 8 is shown in the attached figure. Figure 6 As shown, it includes a second slide rail 801 fixedly mounted on the base plate 6 and a roller assembly 802 fixedly mounted on the bottom of the electrical cabinet 4 , and the roller assembly 802 can move along the second slide rail 801 .

[0056] The structure of the second slide rail 801 is shown in the attached figure. Figure 7 and attached Figure 8 As shown, it includes an outer rail body 803, and a convex beam 804 is fixedly installed on the top of the outer rail body 803 along its length direction, and a first limit member 806 and a second limit member 807 are fixedly installed on the convex beam 804. The aforementioned roller assembly 802 moves on the convex beam 804 and is always located between the first limit member 806 and the second limit member 807.

[0057] The first limiting member 806 and the second limiting member 807 can be locked with the convex beam 804 to limit the back-and-forth movement of the roller assembly 802 .

[0058] A telescopic frame 805 is slidably mounted inside the outer rail body 803 , and the telescopic frame 805 can be pulled out from the outer rail body 803 .

[0059] A telescopic beam 815 that can be raised and lowered is installed in the telescopic frame 805, and the length direction of the telescopic beam 815 is consistent with the length direction of the telescopic frame 805. When the telescopic beam 815 is raised, its top is flush with the top of the convex beam 804, so that the electrical cabinet 4 can be pulled onto the telescopic beam 815.

[0060] The structure of the roller assembly 802 is shown in the attached Figure 9 As shown, the wheel base 809 includes a wheel body 808 rotatably mounted on the wheel base 809. The middle portion of the wheel body 808 is provided with an annular guide groove, and the convex beam 804 is located in the guide groove. The wheel base 809 is mounted on the bottom of the electrical cabinet 4 by bolts.

[0061] The structure of telescopic beam 815 is shown in the attached figure. Figure 11 and attached Figure 12 As shown, at least two pairs of first push blocks 818 are provided at the bottom of the telescopic beam 815 , each pair includes two first push blocks 818 , the two first push blocks 818 are arranged in a mirror image, and a first inclined wall 816 is provided at the bottom of each first push block 818 .

[0062] First guide blocks 817 are fixedly mounted on both sides of the first pushing block 818 .

[0063] The mechanism of telescopic frame 805 is shown in the attached Figure 13 , Attachment Figure 14 and attached Figure 15 As shown, the telescopic frame 805 is provided with an accommodating cavity, and an opening is provided at the top of the accommodating cavity for the telescopic beam 815 to move. The length direction of the opening is consistent with the length direction of the telescopic frame 805. Vertical guide plates 821 are fixedly installed on both sides of the opening.

[0064] First limiting protrusions 820 are fixedly installed on both sides of the top of the telescopic frame 805 , and the length direction of the first limiting protrusions 820 is consistent with the length direction of the telescopic frame 805 .

[0065] As attached Figure 13 and attached Figure 15 As shown, vertical guide rails 831 are fixedly mounted on both side walls of the accommodating chamber. The aforementioned first guide block 817 is located within and slidably engages with guide rails 831. Guide rails 831 extend vertically upward from the center of the accommodating chamber, with their tops flush with the tops of guide plates 821. A baffle is fixedly mounted at the bottom of guide rails 831. When the telescopic beam 815 descends to its lowest position, the bottom of the first guide block 817 abuts the top of the baffle.

[0066] Due to the existence of the guide rail 831, the first guide block 817 can only move in the vertical direction, thereby ensuring that the telescopic beam 815 can only be raised and lowered in the vertical direction.

[0067] As attached Figure 13 As shown, a rotatable screw 822 is installed in the telescopic frame 805. Specifically, the screw 822 passes through the telescopic frame 805 along the length direction of the telescopic frame 805, and both ends of the screw 822 are rotatably matched with the telescopic frame 805 through bearings.

[0068] The first end of the lead screw 822 passes through the telescopic frame 805 and is provided with an inner hexagonal hole 826 . When in use, a hexagonal wrench can be inserted into the inner hexagonal hole 826 to realize the rotation of the lead screw 822 .

[0069] At least two pairs of second push blocks 824 are installed on the lead screw 822 , and each pair has two second push blocks 824 , and the second push blocks 824 correspond to the first push blocks 818 one by one.

[0070] A second inclined wall matching the first inclined wall 816 is formed on the top of the second pushing block 824 .

[0071] The bottom of the second pushing block 824 is slidably engaged with the bottom of the accommodating cavity.

[0072] The threads on the lead screws 822 corresponding to two adjacent second push blocks 824 rotate in opposite directions. That is, the threads on the lead screws 822 corresponding to the same pair of second push blocks 824 rotate in opposite directions. As a result, when the lead screws 822 rotate, the pair of second push blocks 824 move in a mirror-image manner. When the pair of second push blocks 824 move toward each other, they squeeze the corresponding first push blocks 818, causing them to move upward and the telescopic beam 815 to rise. When the pair of second push blocks 824 move in opposite directions, the telescopic beam 815 descends.

[0073] At least one slide bar 823 parallel to the lead screw 822 is fixedly installed in the telescopic frame 805. The slide bar 823 passes through the second push block 824 and is slidably matched with the second push block 824.

[0074] In this embodiment, the first inclined wall 816 at the bottom of the first push block 818 can also face one direction, and correspondingly, the second inclined wall of the second push block 824 can also face one direction; in this case, only one thread of one direction of rotation is required on the lead screw 822.

[0075] A handle 825 is fixedly mounted on the top of the first end of the telescopic frame 805 , and the handle 825 is used to pull the telescopic frame 805 out from the interior of the outer rail body 803 .

[0076] As attached Figure 14 As shown, retractable legs 827 are installed on both sides of the first end of the telescopic frame 805. When the legs 827 are lowered, the second ends contact the ground to support the telescopic frame 805.

[0077] As attached Figure 15 As shown, the first end of the support leg 827 is provided with a hinge hole, a first position-limiting optical hole 828, and a second position-limiting optical hole. A hinge post 829 is fixedly mounted on the telescopic frame 805 and hingedly connected to the hinge hole. The telescopic frame 805 also has position-limiting screw holes corresponding to the first position-limiting optical hole 828 and the second position-limiting optical hole. A position-limiting bolt 830 is also included that can be threadedly engaged with the position-limiting screw holes.

[0078] When the outrigger 827 is folded up, Figure 15 As shown, its length direction is consistent with the length direction of the telescopic frame 805, and the limiting bolt 830 passes through the first limiting light hole 828 or the second limiting light hole and is screwed into the corresponding limiting screw hole; when the support leg 827 is unfolded, its length is perpendicular to the length direction of the telescopic frame 805, and the limiting bolt 830 passes through the second limiting light hole and is screwed into the corresponding limiting screw hole.

[0079] As attached Figure 15 As shown, in this embodiment, a virtual isosceles right triangle is formed between the hinge hole, the first limiting light hole 828 and the second limiting light hole, wherein the hinge hole is located at the right angle point.

[0080] Of course, the number of legs 827 can be greater to provide a more stable support for the telescopic frame 805. The legs 827 can also be deployed in other structures in the prior art.

[0081] The structure of outer rail body 803 is as shown in the attached Figure 10 As shown, the aforementioned convex beam 804 is installed on the top of the outer rail body 803 by bolts. Of course, the outer rail body 803 and the convex beam 804 can also be formed in one piece.

[0082] The outer rail body 803 defines a slide hole 810 that extends through the outer rail body 803 along its length. A first receiving slot 812 and a second receiving slot 813 are defined on both sidewalls of the slide hole 810. The first receiving slot 812 accommodates the support leg 827, while the second receiving slot 813 slidably engages with a first limiting protrusion 820. The length of the first limiting protrusion 820 matches the length of the telescopic frame 805. The cooperation between the second receiving slot 813 and the first limiting protrusion 820 ensures that the telescopic frame 805 can only move back and forth along the slide hole 810.

[0083] A third receiving groove 814 for receiving the telescopic beam 815 is defined on the top wall of the sliding hole 810 . The length of the third receiving groove 814 is consistent with the length of the outer rail body 803 .

[0084] The structures of the aforementioned first limit member 806 and the second limit member 807 are consistent, and both include a limit block 832. The top of the limit block 832 is inclined, and an inclined protrusion 833 is also provided on the top of the limit block 832; the inclination of the protrusion 833 is consistent with the inclination of the top of the limit block 832, and the width of the protrusion 833 is consistent with the width of the guide groove.

[0085] A sliding groove 835 matching the telescopic beam 815 and the convex beam 804 is provided at the bottom of the limiting block 832 . The telescopic beam 815 and the convex beam 804 can pass through the sliding groove 835 and interact with the sliding groove 835 .

[0086] A second limiting ridge 836 is fixedly installed on both sides of the slide groove 835. The telescopic beam 815 and the convex beam 804 are respectively provided with a second limiting groove 819 and a first limiting groove that slide with the second limiting ridge 836.

[0087] A vertical internal threaded through hole is provided on the limit block 832, which passes through the limit block 832 and the protrusion 833, and a locking bolt 834 is installed inside; when the locking bolt 834 is tightened, the bottom of the locking bolt 834 is against the telescopic beam 815 or the protruding beam 804, thereby locking the first limit member 806 and the second limit member 807.

[0088] In this embodiment, the top of the limiting block 832 may be inclined, and the protrusion 833 may not be provided.

[0089] During actual installation, the first limiting member 806 is located on the side close to the door of the electrical cabinet 4, and the second limiting member 807 is located on the side away from the door of the electrical cabinet 4. Therefore, a first connecting rod 837 is fixedly installed on one side of the limiting block 832 of the second limiting member 807, and a first through hole 838 is opened on the first connecting rod 837; Figure 7As shown, a second connecting rod is fixedly mounted on the top of the first end of the outer rail 803. A second through-hole is defined in the second connecting rod, and a rope is connected between the first through-hole 838 and the second through-hole. When the electrical cabinet 4 is pulled onto the telescopic beam 815, the rope is pulled to extend the second stopper 807. Installing the rope between the second connecting rod and the first connecting rod 837 effectively maintains the rope's position, making it easier to use.

[0090] In this embodiment, the roller assembly 802 can also be replaced with a sliding component such as a slider that slides with the convex beam 804 and the telescopic beam 815. In this case, the limit block 832 can be just a square stop block.

[0091] In this embodiment, the convex beam 804 and the telescopic beam 815 can be replaced by grooves and telescopic grooves that also have a guiding function. At this time, the roller assembly 802 or the slider is fitted in the groove and the telescopic groove, and the first limit member 806 and the second limit member 807 are also slidably fitted in the groove and the telescopic groove.

[0092] In this embodiment, the component that pushes the telescopic beam 815 up and down can also be replaced by other structures in the prior art. For example, the first end of the telescopic frame 805 is open, and a long strip of pad is directly inserted into it when in use to lift the telescopic beam 815.

[0093] As attached Figure 10 As shown, two parallel limiting grooves 811 are formed on the bottom of the sliding hole 810, with the first ends of the limiting grooves 811 being closed and the second ends being open to the outside. Two fixing blocks corresponding to the limiting grooves 811 are fixedly mounted on the bottom of the telescopic frame 805. The fixing blocks are located in the limiting grooves 811 and slideably engage with the limiting grooves 811. This structure prevents the telescopic frame 805 from falling out of the sliding hole 810.

[0094] As attached Figure 3 , Attachment Figure 4 , Attachment Figure 5 As shown, an auxiliary positioning assembly 9 is installed on the top of the electrical cabinet 4. Specifically, the auxiliary positioning assembly 9 includes a pull ring 903 installed on the top of the electrical cabinet 4 through a thread. The pull ring 903 can also directly utilize the hanging ring on the top of the electrical cabinet 4.

[0095] A connecting ring 904 is installed on the pull ring 903, and the connecting ring 904 is fixedly installed on the first end of the pull rod 901, and a hook 902 is fixedly installed on the second end of the pull rod 901. Figure 2 As shown, a hanging hole matching the hook 902 is provided on the box body 1. When the electric cabinet 4 is pulled out from the box body 1, the hook 902 is hung on the hanging hole to keep the electric cabinet 4 stable.

[0096] Of course, the auxiliary positioning assembly 9 can also be installed on the bottom of the electrical cabinet 4 at the same time.

[0097] In another embodiment, in order to maintain the stability of the electrical cabinet 4 during normal use in the box body 1, as shown in the attached Figure 18 As shown, ear plates 401 are fixedly installed on the side walls of the electrical cabinet 4, and studs 402 are fixedly installed on the partition 3. When the electrical cabinet 4 is pushed into the box body 1, the studs 402 pass through the ear plates 401, and then nuts are installed to fix the electrical cabinet 4.

[0098] In the above embodiment, the partition plate 3 may also be replaced by a partition member of a frame structure.

[0099] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A substation that is easy to maintain, characterized by: The invention comprises a box body (1) and an electrical cabinet (4), wherein the bottom of the electrical cabinet (4) is slidably matched with the box body (1) via a retractable second slide rail assembly (8), and the top of the electrical cabinet (4) is slidably matched with the box body (1) via a first slide rail assembly (7), wherein the second slide rail assembly (8) comprises a sliding component mounted on the bottom of the electrical cabinet (4), and an outer rail body (803) mounted on the electrical cabinet (4), wherein a first guide member matching the sliding component is mounted on the top of the outer rail body (803), and a telescopic frame (805) is mounted in the outer rail body (803), and the telescopic frame (805) is mounted on the outer rail body (803). 5) A second guide member capable of being raised and lowered is installed inside, and the second guide member rises after the telescopic frame (805) extends out of the outer rail body (803), and the second guide member is kept flush with the first guide member; it also includes a plurality of limiting members for limiting the electrical cabinet (4), the limiting members can slide on the second guide member and the first guide member, and the plurality of limiting members are distributed on both sides of the electrical cabinet (4); a pull rod (901) is installed on the top of the electrical cabinet (4), and the pull rod (901) can be detachably connected to the box body (1); and the telescopic frame (805) is equipped with retractable legs (827); A plurality of first push blocks (818) are fixedly installed at the bottom of the second guide member, and a first inclined wall (816) is provided at the bottom of the first push blocks (818). A rotatable screw (822) is installed in the telescopic frame (805), and a second push block (824) corresponding to the first push block (818) is installed on the screw (822). The top of the second push block (824) is provided with a second inclined wall matching the first inclined wall (816), and the bottom of the second push block (824) is slidably matched with the telescopic frame (805).

2. The maintenance-friendly substation according to claim 1, characterized in that: First guide blocks (817) are fixedly mounted on both sides of the first push block (818), and guide rails (831) that are slidably engaged with the first guide blocks (817) are mounted in the telescopic frame (805), and the guide rails (831) are vertically arranged.

3. The maintenance-friendly substation according to claim 2, characterized in that: At least one sliding rod (823) parallel to the lead screw (822) is fixedly installed in the telescopic frame (805), and the sliding rod (823) is in sliding engagement with the second push block (824).

4. The maintenance-friendly substation according to claim 1, characterized in that: A vertical internal threaded through hole is provided on the limiting member, and a locking bolt (834) is installed in the internal threaded through hole; after the locking bolt (834) is tightened, the bottom thereof abuts against the first guide member or the second guide member, thereby locking the limiting member.

5. The easy-to-maintain substation according to any one of claims 1 to 4, characterized in that: The first guide member is a convex beam (804) installed on the top of the outer rail body (803), and the second guide member is a telescopic beam (815). When the telescopic beam (815) is raised, the top is flush with the top of the convex beam (804).

6. The maintenance-friendly substation according to claim 1, characterized in that: A hook (902) is fixedly mounted on the second end of the pull rod (901), a connecting ring (904) is fixedly mounted on the first end of the pull rod (901), the connecting ring (904) is mounted on a pull ring (903) located on the top of the electrical cabinet (4), and a hanging hole matching the hook (902) is provided on the box body (1).

7. The maintenance-friendly substation according to claim 1, characterized in that: The first slide rail assembly (7) adopts a drawer slide rail.

8. The maintenance-friendly substation according to claim 1, characterized in that: A partition is installed in the middle of the box body (1), and a stud (402) is installed on the partition body. An ear plate (401) is fixedly installed on the side wall of the electrical cabinet (4). After the electrical cabinet (4) is pushed into the box body (1), the stud (402) passes through the ear plate (401) and a nut is installed.

9. The maintenance-friendly substation according to claim 1, characterized in that: The sliding component is a roller assembly (802).

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