A combined switchgear cabinet

Abstract

The utility model discloses a combined switchgear, including bottom cabinet body, middle cabinet body and upper cabinet body, the middle cabinet body is located between bottom cabinet body and upper cabinet body, and the middle cabinet body is connected with bottom cabinet body, upper cabinet body through the telescopic mechanism of both sides and rear portion, the telescopic mechanism includes the support of fixed connection in the both sides and rear portion outer wall of middle cabinet body, the support is transverse and has the screw rod of rotation connection, one end of screw rod is fixedly connected with the runner, the other end of screw rod is fixedly connected with the vertical setting oval turntable. The utility model discloses a combined switchgear, through the telescopic mechanism and spacing assembly design of uniqueness realizes the quick accurate connection and separation between cabinet body, improves the installation maintenance efficiency and ensures the firm connection, and the double guide structure of guide rod and sleeve block cooperation and sliding slot constraint guarantees the positioning rod movement track accurate, improves the connection reliability and overall structure stability and security simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of switch cabinet technology, and in particular to a combined switch cabinet. Background Technology

[0002] In power systems, switchgear, as the core equipment for power distribution and control, directly impacts the safe operation of the power system through its structural stability and ease of operation. Traditional switchgear typically employs a fixed cabinet structure, with cabinets rigidly connected by bolts or welding. This connection method has several drawbacks: First, installation requires precise alignment and tool tightening, which is cumbersome and time-consuming, making it difficult to meet the needs of rapid assembly. Second, the lack of effective buffering and adjustment mechanisms between cabinets makes them prone to loosening during transportation or operation due to vibration, external impacts, etc., affecting equipment stability. Third, when a cabinet needs maintenance or replacement, the rigid overall connection structure complicates the disassembly process, significantly reducing maintenance efficiency. Furthermore, traditional positioning structures often use circular positioning pins, which pose a risk of circumferential rotation and cannot provide reliable limiting effects, making them unsuitable for stable operation under complex conditions.

[0003] Therefore, we propose a combined switch cabinet. Utility Model Content

[0004] The main purpose of this utility model is to provide a combined switchgear that avoids the problems of cumbersome installation, loose connections, difficult maintenance, and unreliable positioning of traditional combined switchgear, thereby improving the installation and maintenance efficiency, structural stability, and operational safety of the combined switchgear, ensuring the stable operation of the power system, and effectively solving the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A combined switch cabinet includes a bottom cabinet, a middle cabinet, and an upper cabinet. The middle cabinet is located between the bottom and upper cabinets and is connected to the bottom and upper cabinets via telescopic mechanisms on both sides and at the rear. The telescopic mechanism includes brackets fixedly connected to the outer walls of the middle cabinet on both sides and at the rear. A screw is horizontally passed through and rotatably connected to the bracket. One end of the screw is fixedly connected to a wheel, and the other end is fixedly connected to a vertically arranged elliptical turntable. A pull rod is hinged to both the top and bottom of the elliptical turntable. A connecting frame is hinged to the end of the pull rod away from the elliptical turntable. A positioning rod passing through the top and bottom of the middle cabinet is installed on the connecting frame via a guide assembly. Positioning grooves matching the positioning rods are provided at the top of the bottom cabinet and the bottom of the upper cabinet. Limiting components for limiting the positioning rods are provided in the positioning grooves.

[0006] By adopting the above technical solution, rotating the wheel at one end of the screw drives the screw to rotate, and the elliptical turntable at the other end of the screw rotates synchronously with the screw. Due to the geometric characteristics of the elliptical turntable, its top and bottom ends will generate radial displacement when rotating, thereby pushing or pulling the hinged traction rod. The traction rod swings back and forth with the rotation of the elliptical turntable, driving the connecting frame to move vertically in a straight line along the guide assembly. The connecting frame is fixedly connected to the positioning rod. Therefore, the vertical movement of the connecting frame directly drives the positioning rod to move up and down. When it is necessary to connect the cabinet, rotate the wheel to make the elliptical turntable push the pull rod. Through the connecting frame, the positioning rod is inserted into the positioning groove at the bottom of the upper cabinet or the top of the bottom cabinet. Rotate the wheel in the opposite direction and the elliptical turntable pulls the pull rod to make the positioning rod exit from the positioning groove, so that the cabinet can be separated. Once the positioning rod is inserted into the positioning slot, the limiting component automatically locks the positioning rod to prevent it from loosening due to vibration or other factors, thus ensuring the stability of the cabinet connection.

[0007] Furthermore, the positioning rod has a rectangular structure, and the positioning groove corresponds one-to-one with the positioning rod in terms of position and number.

[0008] By adopting the above technical solution, the positioning rod is a rectangular body and the positioning groove is a rectangular groove that fits it. The two achieve insertion in a unique direction by matching their shapes, avoiding circumferential rotation that may be caused by the circular structure. The number of positioning rods and positioning grooves at corresponding positions on the bottom and top of the cabinet, such as the sides and the rear, is the same, for example, one rod on each side, to ensure that multiple points are positioned synchronously when the cabinet is connected, avoiding tilting or misalignment. When the telescopic mechanism drives the positioning rod to move into the positioning groove, the straight edge of the rectangular rod and the straight wall of the groove form a guide surface, guiding the positioning rod to fall accurately into the groove and reducing insertion resistance. After the rectangular rod is inserted, its four sides fit tightly against the inner wall of the positioning groove, providing greater shear resistance through planar contact and preventing the cabinet from shifting horizontally, such as left and right or front and back. The limiting component and the rectangular rod are planarly engaged, and locking can be achieved by snapping into the groove on the side of the rod or pressing against the plane of the rod, preventing the rod from loosening up and down. The uniqueness of the rectangular structure means that it can only be inserted in a specific direction, which can prevent the limiting failure caused by the positioning rod being installed in the wrong direction, thus improving the reliability of operation.

[0009] Furthermore, the guide assembly includes a sleeve block fixedly connected to the connecting frame, and a guide rod connected to the central cabinet passes through the sleeve block.

[0010] By adopting the above technical solution, the rigid rod that is fixedly connected to the middle cabinet is a round rod, and the sleeve block is fixedly connected to the connecting frame. The sleeve block has a through hole that matches the guide rod, and the sleeve block can slide freely along the guide rod. When the telescopic mechanism drives the connecting frame to move up and down, the sleeve block slides vertically along the guide rod. The rigid structure of the guide rod restricts the lateral displacement of the sleeve block, such as left and right or front and back offset, ensuring that the positioning rod only moves in the vertical direction and avoiding jamming or jamming when inserted into the positioning slot due to skew.

[0011] Furthermore, vertically arranged sliding grooves are provided on both sides of the middle cabinet and on the rear outer wall, with the guide rod located inside the sliding groove and the sleeve block slidably connected to the sliding groove.

[0012] By adopting the above technical solution, two sets of sliding grooves are vertically opened on the two sides and the rear outer wall of the middle cabinet, such as two sets of symmetrical sliding grooves on each side and two sets of sliding grooves at the rear. Each set of sliding grooves includes two vertical parallel grooves, such as the left sliding groove and the right sliding groove, forming a double-track guide structure. The guide rod is fixed inside the sliding groove, and its axis is consistent with the vertical extension direction of the sliding groove. The outer contour of the sleeve is adapted to the width of the groove, allowing it to slide vertically within the groove. This restricts the lateral displacement of the sleeve, such as displacement perpendicular to the length of the groove. The through hole inside the sleeve cooperates with the guide rod to achieve vertical linear motion guidance, consistent with the aforementioned guide rod-sleeve principle. Each pair of opposing grooves, such as the left and right grooves, clamp the sleeve together, forming a constraint effect similar to a "linear guide rail," further suppressing the swing or rotation of the sleeve. When the telescopic mechanism drives the connecting frame to move, the sleeve slides vertically in the groove and moves axially along the guide rod. The double guidance ensures that the movement trajectory of the positioning rod is strictly perpendicular to the bottom surface of the cabinet, avoiding the skew that may occur due to a single guide structure such as only the guide rod.

[0013] Furthermore, the limiting component includes grooves opened on the four inner walls of the positioning groove and springs that are fixedly connected laterally in the grooves. A limiting ball is fixedly connected to the end of the spring away from the positioning groove, and limiting grooves that can be inserted into the limiting ball are opened on the four outer walls of the positioning rod.

[0014] By adopting the above technical solution, the groove is located on the four inner walls of the positioning groove and is a horizontally opened groove used to accommodate the spring and the limiting ball; the spring is horizontally fixed in the groove, with one end connected to the bottom of the groove and the other end connected to the limiting ball, providing elastic thrust; the limiting ball is a spherical structure, partially exposed in the groove, and can pop out or retract under the action of the spring; the limiting groove is opened on the four outer walls of the positioning rod, with the position corresponding to the limiting ball, and the shape is an arc-shaped recess used to accommodate the limiting ball; When the positioning rod is not inserted, the limiting ball protrudes from the inner wall of the positioning groove under the action of the spring, forming an obstruction. When the positioning rod is inserted into the positioning groove, the outer wall of the rod squeezes the limiting ball, causing it to overcome the spring force and retract into the groove. At this time, the spring is compressed and stores energy. When the positioning rod is inserted into place and the limiting groove is aligned with the limiting ball, the spring releases energy and pushes the limiting ball into the limiting groove. At this time, the spherical surface of the limiting ball fits against the concave surface of the limiting groove, forming a multi-point radial locking. The four sides limit the positioning rod simultaneously, preventing the positioning rod from moving forward and backward or left and right in the horizontal direction. The elastic force of the spring provides a continuous locking force to counteract the displacement tendency of the cabinet caused by vibration, external force, etc. When the cabinet needs to be separated, the positioning rod is pulled up or down by a telescopic mechanism such as a rotating screw, causing the positioning rod to tend to displace from the positioning groove. When the positioning rod moves, the edge of the limiting groove squeezes the limiting ball, forcing the limiting ball to retract back into the groove and be compressed by the spring. After the positioning rod is completely separated from the positioning groove, the limiting ball protrudes again under the action of the spring, waiting for the next locking.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This utility model discloses a combined switchgear, which achieves rapid and precise connection and separation between cabinets through a unique telescopic mechanism and limiting component design. The rotating wheel drives the elliptical turntable to rotate, and its geometric characteristics drive the pull rod to push the positioning rod into the positioning groove. The limiting ball in the limiting component automatically embeds into the limiting groove of the positioning rod under the action of the spring, forming a multi-point radial locking, effectively offsetting the displacement tendency caused by vibration, external force, etc., and ensuring that the cabinet connection is firm. When disassembly is required, the positioning rod can be easily pulled out by rotating the wheel in the opposite direction without additional tools, which significantly improves the efficiency of installation and maintenance and meets the needs of rapid deployment and flexible maintenance of power equipment.

[0016] This utility model discloses a combined switchgear with a dual-guide structure design (guide rod and sleeve block working together, with sliding grooves further constraining the sleeve block) that ensures the high precision of the positioning rod's movement trajectory. The guide rod restricts the lateral offset of the sleeve block, ensuring the positioning rod moves only in the vertical direction, preventing insertion jamming. The two opposing sliding grooves form a "linear guide rail" effect, further suppressing the sleeve block's swaying or rotation, ensuring the positioning rod moves strictly perpendicular to the bottom surface of the cabinet. This precise guidance not only reduces the resistance of the positioning rod inserting into the positioning groove but also improves the reliability of the connection process, effectively avoiding connection failures caused by misalignment, and enhancing the overall stability and safety of the combined switchgear structure. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a combined switchgear according to the present invention.

[0018] Figure 2 This is a schematic diagram of the disassembled structure of a combined switch cabinet according to the present invention.

[0019] Figure 3 This is a schematic diagram of the telescopic mechanism of a combined switchgear according to the present invention.

[0020] Figure 4 This is a schematic diagram of the limiting component structure of a combined switchgear according to the present invention.

[0021] In the diagram: 1. Bottom cabinet; 2. Middle cabinet; 3. Upper cabinet; 4. Telescopic mechanism; 5. Bracket; 6. Screw; 7. Elliptical turntable; 8. Pull rod; 9. Connecting frame; 10. Guide rod; 11. Sleeve block; 12. Positioning rod; 13. Positioning groove; 14. Groove; 15. Spring; 16. Limit ball; 17. Limit groove; 18. Slide groove. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] To prevent the problems of cumbersome installation, loose connections, difficult maintenance, and unreliable positioning of traditional combined switchgear, and to improve the installation and maintenance efficiency, structural stability, and operational safety of combined switchgear, thereby ensuring the stable operation of the power system, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a combined switch cabinet includes a bottom cabinet 1, a middle cabinet 2, and an upper cabinet 3. The middle cabinet 2 is located between the bottom cabinet 1 and the upper cabinet 3, and is connected to the bottom cabinet 1 and the upper cabinet 3 via telescopic mechanisms 4 on both sides and at the rear. The telescopic mechanism 4 includes brackets 5 fixedly connected to the outer walls of the middle cabinet 2 on both sides and at the rear. A screw 6 is transversely passed through and rotatably connected to the bracket 5. One end of the screw 6 is fixedly connected to a wheel. The other end is fixedly connected to a vertically arranged elliptical turntable 7. The top and bottom ends of the elliptical turntable 7 are both hinged with a pull rod 8. The end of the pull rod 8 away from the elliptical turntable 7 is hinged with a connecting frame 9. The connecting frame 9 is equipped with a positioning rod 12 that passes through the top and bottom ends of the middle cabinet 2 through a guide component. The top end of the bottom cabinet 1 and the bottom end of the upper cabinet 3 are both provided with positioning grooves 13 that match the positioning rod 12. The positioning groove 13 is provided with a limiting component for limiting the positioning rod 12.

[0024] When in use, the rotating wheel at one end of the screw 6 is rotated, which drives the screw 6 to rotate. The elliptical turntable 7 at the other end of the screw 6 rotates synchronously with the screw. Due to the geometric characteristics of the elliptical turntable, its top and bottom ends will generate radial displacement when rotating, thereby pushing or pulling the hinged traction rod 8. The traction rod 8 swings back and forth with the rotation of the elliptical turntable 7, which drives the connecting frame 9 to move vertically in a straight line along the guide assembly. The connecting frame 9 is fixedly connected to the positioning rod 12. Therefore, the vertical movement of the connecting frame directly drives the positioning rod 12 to move up and down. When it is necessary to connect the cabinet, the rotating wheel is rotated so that the elliptical turntable 7 pushes the pulling rod 8. The positioning rod 12 is inserted into the positioning groove 13 at the bottom of the upper cabinet 3 or the top of the bottom cabinet 1 through the connecting frame 9. The rotating wheel is rotated in the opposite direction so that the elliptical turntable 7 pulls the pulling rod 8, so that the positioning rod 12 is removed from the positioning groove 13, and the cabinet can be separated. When the positioning rod 12 is inserted into the positioning slot 13, the limiting component automatically locks the positioning rod 12 to prevent it from loosening due to vibration or other factors, thus ensuring the stability of the cabinet connection.

[0025] For example, such as Figure 2 , Figure 3 As shown, the present invention also includes a rectangular structure for the positioning rod 12, and the positioning grooves 13 correspond one-to-one with the positioning rods 12 in terms of position and number.

[0026] In use, the positioning rod 12 is a rectangular body, and the positioning groove 13 is a rectangular groove that fits it. The two fit together to achieve insertion in a single direction, avoiding circumferential rotation that may be caused by the circular structure. The number of positioning rods and positioning grooves at corresponding positions on the bottom cabinet 1 and the upper cabinet 3, such as on both sides and the rear, is the same, for example, 2 rods on each side, to ensure that multiple points are positioned synchronously when the cabinets are connected, avoiding tilting or misalignment. When the telescopic mechanism 4 drives the positioning rod 12 to move into the positioning groove 13, the straight edge of the rectangular rod and the straight wall of the groove form a guide surface, guiding the positioning rod to fall accurately into the groove and reducing insertion resistance. After the rectangular rod is inserted, its four sides fit tightly against the inner wall of the positioning groove, providing greater shear resistance through planar contact, preventing the cabinet from shifting horizontally, such as left and right or front and back. The limiting component and the rectangular rod are planarly engaged, and locking can be achieved by snapping into the groove on the side of the rod or pressing against the plane of the rod, preventing the rod from loosening up and down. The uniqueness of the rectangular structure means that it can only be inserted in a specific direction, which can prevent the limiting failure caused by the positioning rod being installed in the wrong direction, thus improving the reliability of operation.

[0027] For example, such as Figure 3 As shown, the present invention also includes a guide assembly comprising a sleeve block 11 fixedly connected to the connecting frame 9, wherein a guide rod 10 connected to the central cabinet 2 passes through the sleeve block 11.

[0028] In use, the rigid rod that is fixedly connected to the middle cabinet 2 is a round rod and is vertically set. The sleeve block 11 is fixedly connected to the connecting frame 9 and has a through hole inside that is adapted to the guide rod 10. The sleeve block 11 can slide freely along the guide rod 10. When the telescopic mechanism drives the connecting frame 9 to move up and down, the sleeve 11 slides vertically along the guide rod 10. The rigid structure of the guide rod 10 restricts the lateral displacement of the sleeve 11, such as left and right or front and back offset, to ensure that the positioning rod 12 moves only in the vertical direction, and avoids jamming or getting stuck when inserted into the positioning groove 13 due to skew.

[0029] For example, such as Figure 1 , Figure 2 , Figure 3 As shown, the present invention also includes vertically arranged sliding grooves 18 on both sides and the rear outer wall of the middle cabinet 2, the guide rod 10 is located inside the sliding groove 18, and the sleeve block 11 is slidably connected to the sliding groove 18.

[0030] In use, two sets of sliding grooves 18 are vertically opened on both sides and the rear outer wall of the middle cabinet 2, such as two sets of symmetrical sliding grooves on each side and two sets of sliding grooves at the rear. Each set of sliding grooves includes two vertical parallel grooves, such as the left sliding groove and the right sliding groove, forming a double-track guide structure. The guide rod 10 is fixed inside the sliding groove 18, and its axis is consistent with the vertical extension direction of the sliding groove. The outer contour of the sleeve block 11 is adapted to the groove width of the slide groove 18, and can slide vertically in the groove, limiting the lateral displacement of the sleeve block 11, such as displacement perpendicular to the length direction of the slide groove. The through hole inside the sleeve block 11 cooperates with the guide rod 10 to realize vertical linear motion guidance, which is consistent with the aforementioned guide rod-sleeve block principle. Each pair of opposite slide grooves, such as the left and right slide grooves, together clamp the sleeve block, forming a constraint effect similar to a "linear guide rail", further suppressing the swing or rotation of the sleeve block. When the telescopic mechanism drives the connecting frame 9 to move, the sleeve block 11 slides vertically in the slide groove 18 and moves axially along the guide rod 10. The double guidance ensures that the movement trajectory of the positioning rod 12 is strictly perpendicular to the bottom surface of the cabinet, avoiding the skew that may occur due to a single guide structure such as only the guide rod.

[0031] For example, such as Figure 4 As shown, the present invention also includes the limiting component, which includes grooves 14 opened on the four inner walls of the positioning groove 13 and springs 15 horizontally fixedly connected in the grooves 14. The end of the spring 15 away from the positioning groove 13 is fixedly connected to a limiting ball 16, and the four outer walls of the positioning rod 12 are provided with limiting grooves 17 into which the limiting ball 16 can be inserted.

[0032] In use, the groove 14 is located on the four inner walls of the positioning groove 13. It is a horizontally opened groove used to accommodate the spring 15 and the limiting ball 16. The spring 15 is horizontally fixed in the groove, with one end connected to the bottom of the groove and the other end connected to the limiting ball 16, providing elastic thrust. The limiting ball 16 has a spherical structure, partially exposed in the groove 14, and can pop out or retract under the action of the spring. The limiting groove 17 is opened on the four outer walls of the positioning rod 12, corresponding to the position of the limiting ball 16. It is an arc-shaped recess used to accommodate the limiting ball. When the positioning rod 12 is not inserted, the limiting ball 16 protrudes from the inner wall of the positioning groove 13 under the pushing force of the spring 15, forming an obstruction. When the positioning rod 12 is inserted into the positioning groove 13, the outer wall of the rod squeezes the limiting ball 16, causing it to overcome the spring pushing force and retract into the groove 14. At this time, the spring is compressed and stores energy. When the positioning rod is inserted into place and the limiting groove 17 is aligned with the limiting ball 16, the spring releases energy and pushes the limiting ball into the limiting groove. At this time, the spherical surface of the limiting ball fits with the concave surface of the limiting groove, forming a multi-point radial locking. The four sides are simultaneously limited, preventing the positioning rod from moving forward and backward or left and right in the horizontal direction. The elastic force of the spring provides a continuous locking force to counteract the displacement tendency of the cabinet caused by vibration, external force, etc. When the cabinet needs to be separated, the positioning rod 12 is pulled up or down by the telescopic mechanism such as the rotating screw, so that the positioning rod tends to displace from the positioning groove. When the positioning rod moves, the edge of the limiting groove 17 squeezes the limiting ball 16, forcing the limiting ball to retract back into the groove 14 and be compressed by the spring. After the positioning rod is completely separated from the positioning groove, the limiting ball protrudes again under the action of the spring, waiting for the next locking.

[0033] It should be noted that this utility model is a combined switch cabinet. Rotating the wheel at one end of the screw 6 drives the screw 6 to rotate, which in turn drives the elliptical turntable 7 to rotate synchronously. Due to geometric characteristics, the top and bottom ends of the elliptical turntable 7 generate radial displacement, which pushes the pull rod 8 to swing back and forth. This drives the connecting frame 9 to move vertically along the double guide mechanism composed of the guide rod 10 and the slide groove 18. The connecting frame 9 drives the positioning rod 12 to be inserted upward or downward into the positioning groove 13 at the bottom end of the upper cabinet 3 or the top end of the bottom cabinet 1. The rectangular positioning rod 12 and the rectangular positioning groove 13 are inserted in a single direction to avoid circumferential rotation. The double track slide groove 18 and the guide rod 10 ensure that the positioning rod 12 moves vertically and prevents tilting and jamming. When the positioning rod 12 is inserted, its outer wall presses against the limiting ball 16 in the groove 14 of the inner wall of the positioning groove 13, and the spring 15 is compressed and stores energy. After the positioning rod 12 is in place, the limiting groove 17 is aligned with the limiting ball 16, and the spring 15 releases energy to push the limiting ball 16 into the limiting groove 17, thereby achieving radial locking on all four sides and preventing horizontal displacement and vertical loosening of the cabinet. When the rotating wheel is rotated in the opposite direction, the elliptical turntable 7 pulls the pull rod 8, causing the connecting frame 9 to move the positioning rod 12 away from the positioning groove 13. When the positioning rod 12 moves, the edge of the limiting groove 17 squeezes the limiting ball 16, forcing the limiting ball 16 to retract into the groove 14 and the spring 15 to compress it again. After the positioning rod 12 completely exits the positioning groove 13, the limiting ball 16 protrudes again under the action of the spring 15, waiting for the next locking. The cabinet loses the constraint of the positioning rod 12 and can be separated.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A combined switchgear, comprising a bottom cabinet (1), a middle cabinet (2), and an upper cabinet (3), characterized in that, The middle cabinet (2) is located between the bottom cabinet (1) and the upper cabinet (3), and the middle cabinet (2) is connected to the bottom cabinet (1) and the upper cabinet (3) through telescopic mechanisms (4) on both sides and at the rear. The telescopic mechanism (4) includes a bracket (5) fixedly connected to the outer wall of the middle cabinet (2) on both sides and at the rear. A screw (6) is horizontally passed through and rotatably connected to the bracket (5). One end of the screw (6) is fixedly connected to a wheel, and the other end of the screw (6) is fixedly connected to a vertically arranged elliptical wheel. The elliptical turntable (7) has a pull rod (8) hinged at both the top and bottom. The pull rod (8) is hinged to a connecting frame (9) at the end away from the elliptical turntable (7). The connecting frame (9) is equipped with a positioning rod (12) that passes through the top and bottom of the middle cabinet (2) via a guide assembly. The top of the bottom cabinet (1) and the bottom of the upper cabinet (3) are both provided with positioning grooves (13) that match the positioning rods (12). The positioning grooves (13) are provided with limiting components for restricting the positioning rods (12).

2. A combined switchgear according to claim 1, characterized in that: The positioning rod (12) has a rectangular structure, and the positioning groove (13) corresponds one-to-one with the positioning rod (12) in terms of position and quantity.

3. A combined switchgear according to claim 1, characterized in that: The guide assembly includes a sleeve (11) fixedly connected to the connecting frame (9), and a guide rod (10) connected to the central cabinet (2) passes through the sleeve (11).

4. A combined switchgear according to claim 3, characterized in that: The middle cabinet (2) has two sets of vertically arranged sliding grooves (18) on both sides and the rear outer wall. The guide rod (10) is located inside the sliding groove (18), and the sleeve block (11) is slidably connected to the sliding groove (18).

5. A combined switchgear according to claim 1, characterized in that: The limiting component includes grooves (14) opened on the four inner walls of the positioning groove (13) and springs (15) fixedly connected laterally in the grooves (14). A limiting ball (16) is fixedly connected to one end of the spring (15) away from the positioning groove (13). A limiting groove (17) for inserting the limiting ball (16) is opened on the four outer walls of the positioning rod (12).

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