A modular prefabricated distribution cabinet opening device

Abstract

This utility model discloses a modular prefabricated distribution cabinet opening device, belonging to the field of modular electrical cabinet processing technology. It includes a support base, with an opening mechanism on one side of the support base. Four brackets are symmetrically fixedly installed on the top of both ends of the support base. Arc-shaped positioning blocks are fixedly installed on the top of two of the brackets. Annular mounting plates are rotatably installed on the top of the arc-shaped positioning blocks. Connecting ring one is fixedly installed on one side of each of the two annular mounting plates. A rotating rod is fixedly installed at the output end of a servo motor. Two connecting ring two are fixedly installed on the outer side of the rotating rod, at the bottom of the two connecting ring one. Connecting ring one and connecting ring two are connected together by a transmission belt. A clamping assembly for stably holding the distribution cabinet is provided inside the annular mounting plate. This utility model, by setting the clamping assembly, stably clamps the distribution cabinet inside the annular mounting plate, preventing the distribution cabinet from shaking or shifting during the opening process.

Description

Technical Field

[0001] This utility model relates to the field of modular electrical cabinet processing technology, specifically to a modular prefabricated distribution cabinet opening device. Background Technology

[0002] With the rapid development of power systems and the widespread application of modularization in the electrical field, modular prefabricated distribution cabinets are widely used in power distribution scenarios in industrial plants, commercial buildings and residential communities due to their flexible assembly, convenient installation and high space utilization.

[0003] In the existing process of drilling holes in modular prefabricated distribution cabinets, clamping and fixing the distribution cabinet is a key step to ensure the accuracy of the drilling. However, the existing clamping methods used for drilling holes in distribution cabinets have obvious shortcomings. On the one hand, it is difficult to adapt to modular prefabricated distribution cabinets of different specifications and sizes. When processing different models of distribution cabinets, it is necessary to change the corresponding clamping fixtures, which not only increases the equipment investment cost, but also prolongs the process changeover time and reduces the overall production efficiency. On the other hand, the clamping stability is poor. During the drilling process, the distribution cabinet is prone to displacement or shaking, resulting in problems such as drilling position deviation and uneven hole walls. This affects the compatibility of subsequent components of the distribution cabinet and may even cause damage to the cabinet shell, increasing the scrap rate. It is difficult to meet the needs of large-scale and high-precision production and processing of modular prefabricated distribution cabinets. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides a modular prefabricated distribution cabinet opening device, which has the advantages of being adaptable to modular prefabricated distribution cabinets of different specifications, providing stable clamping, and allowing for precise adjustment of the opening angle. This solves the problems of poor adaptability and insufficient stability of the existing distribution cabinet opening clamping method, which leads to low production efficiency and poor opening accuracy.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: A modular prefabricated distribution cabinet opening device includes a support base, an opening mechanism on one side of the support base, four brackets symmetrically fixedly installed on the top of both ends of the support base, an arc-shaped positioning block fixedly installed on the top of two brackets, an annular mounting plate rotatably installed on the top of the arc-shaped positioning block, a connecting ring one fixedly installed on one side of each of the two annular mounting plates, two rectangular blocks symmetrically fixedly installed on the top of both ends of the support base and located between the two brackets, a servo motor fixedly installed on one side of the rectangular blocks, a rotating rod fixedly installed at the output end of the servo motor, the rotating rod passing through the two rectangular blocks, two connecting ring two fixedly installed on the outer side of the rotating rod and at the bottom of the two connecting rings one, the connecting ring one and the connecting ring two are connected together by a transmission belt, a clamping component for stably holding the distribution cabinet is provided inside the annular mounting plate, a locking component is provided at the center of the annular mounting plate and on one side of the clamping component, the clamping component is composed of a guide rod and a square plate.

[0006] As a preferred technical solution of this utility model, the clamping assembly includes four guide rods, which are respectively fixedly installed circumferentially inside the annular mounting plate. A sleeve is fixedly installed between the four guide rods, and a fixing ring is fixedly installed on the outer side of the sleeve near one end. Several fixing holes are circumferentially opened on one side of the fixing ring.

[0007] As a preferred technical solution of this utility model, the clamping assembly also includes an installation tube, which is rotatably installed inside the sleeve. A square plate is fixedly installed on the outer side of the installation tube near the fixing ring. An insertion hole is opened on one side of the square plate, and the position of the insertion hole corresponds to that of the fixing hole.

[0008] As a preferred technical solution of this utility model, the clamping assembly also includes four clamping plates. A circular hole is opened on one side of the clamping plate. The guide rod is movably sleeved inside the circular hole. Two limiting grooves are symmetrically opened on the outer side of the guide rod. Two limiting blocks are symmetrically fixedly installed on the inner side of the circular hole. The limiting blocks are movably sleeved inside the limiting groove.

[0009] As a preferred technical solution of this utility model, the clamping assembly further includes four arc-shaped connecting rods. The arc-shaped connecting rods are disposed between the square plate and the guide rod. One end of the arc-shaped connecting rod is rotatably mounted on the end of the clamping plate near the square plate, and the other end of the arc-shaped connecting rod is rotatably mounted on the side of the square plate near the guide rod, and is located at the corner of the square plate.

[0010] As a preferred embodiment of this utility model, the locking assembly includes a mounting rod, which is movably installed inside the mounting tube. A spring is fixedly installed at one end of the mounting rod, and the other end of the spring is fixedly installed to one side of the inside of the mounting tube.

[0011] As a preferred technical solution of this utility model, the locking assembly further includes a connecting plate, which is fixedly installed on the outer side of the mounting rod away from the square plate. A plug rod is fixedly installed on the side of the connecting plate close to the square plate. The other end of the plug rod passes through the plug hole and is movably sleeved inside the fixing hole. A handwheel is fixedly installed on the end of the mounting rod away from the square plate.

[0012] As a preferred technical solution of this utility model, a number of slots are symmetrically opened on the inner side of the mounting tube, and a number of blocks are fixedly installed on the outer side of the mounting rod, with the blocks engaging with the slots.

[0013] The beneficial effects of this utility model are as follows: This invention, through the cooperation of a servo motor, connecting ring one, connecting ring two, and a transmission belt, can precisely drive the rotation of the annular mounting plate, thereby flexibly adjusting the angle of the distribution cabinet to meet the opening requirements of different positions and improving the flexibility and accuracy of opening. The guide rod, clamping plate, arc-shaped connecting rod, and square plate in the clamping assembly interact to stably clamp distribution cabinets of different specifications, while the locking assembly effectively fixes the position of the clamping assembly, preventing the distribution cabinet from shaking during opening and ensuring the quality and efficiency of opening. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the opening device structure of a modular prefabricated power distribution cabinet according to this utility model; Figure 2 This is a schematic diagram of the hole-opening mechanism of this utility model; Figure 3 This is a schematic diagram of the support base structure of this utility model; Figure 4 This is a schematic diagram of the annular mounting plate structure of this utility model; Figure 5 This is a schematic diagram of the clamping and locking components of this utility model; Figure 6 This is a schematic diagram of the sleeve structure of this utility model; Figure 7 This is a schematic diagram of the mounting rod structure of this utility model; Figure 8 This is a schematic diagram of the insertion rod structure of this utility model; Figure 9 This is a schematic diagram of the square plate structure of this utility model.

[0015] Reference numerals in the attached drawings: 1. Support base; 2. Bracket; 3. Arc-shaped positioning block; 4. Rectangular block; 5. Servo motor; 6. Rotating rod; 7. Connecting ring two; 8. Annular mounting plate; 9. Connecting ring one; 10. Guide rod; 11. Sleeve; 12. Fixing ring; 13. Fixing hole; 14. Mounting tube; 15. Square plate; 16. Spring; 17. Insertion hole; 18. Mounting rod; 19. Connecting plate; 20. Insertion rod; 21. Arc-shaped connecting rod; 22. Clamping plate. Detailed Implementation

[0016] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings: like Figures 1-9 As shown, a modular prefabricated distribution cabinet opening device includes a support base 1. An opening mechanism is provided on one side of the support base 1. Four brackets 2 are symmetrically fixedly installed on the top of both ends of the support base 1. Arc-shaped positioning blocks 3 are fixedly installed on the top of two brackets 2. Annular mounting plates 8 are rotatably installed on the top of the arc-shaped positioning blocks 3. Connecting rings 9 are fixedly installed on one side of each of the two annular mounting plates 8. Two rectangular blocks 4 are symmetrically fixedly installed on the top of both ends of the support base 1 and between the two brackets 2. A servo motor 5 is fixedly installed on one side of the rectangular blocks 4. A rotating rod 6 is fixedly installed at the output end of the servo motor 5. The rotating rod 6 passes through the two rectangular blocks 4. Two connecting rings 7 are fixedly installed on the outside of the rotating rod 6 and at the bottom of the two connecting rings 9. Connecting rings 9 and connecting rings 7 are connected together by a transmission belt. A clamping component for stably holding the distribution cabinet is provided inside the annular mounting plate 8. A locking component is provided at the center of the annular mounting plate 8 and on one side of the clamping component. The clamping component consists of a guide rod 10 and a square plate 15.

[0017] In this embodiment, a support base 1 is provided to provide a horizontal placement and processing platform for the power distribution cabinet, ensuring the stability of the drilling operation. The drilling mechanism is used to perform drilling processing on the clamped and fixed power distribution cabinet. It includes a rectangular rod, which is fixedly installed on one side of the support base 1. The rectangular rod provides a mounting carrier for the drive motor and the screw. A groove is provided on the top of the rectangular rod. The drive motor is fixedly installed at one end of the rectangular rod near the servo motor 5. The output end of the drive motor is fixedly installed with the screw. The screw is located inside the groove. An L-shaped rod is threaded to the outside of the screw. A hydraulic rod is fixedly installed at the other end of the L-shaped rod. The hydraulic rod is located on the top of the support base 1. A laser hole opener is fixedly installed at the output end of the hydraulic rod. The drive motor drives the screw to rotate, causing the L-shaped rod to move along the groove and adjust the horizontal position of the laser hole opener. The hydraulic rod can drive the laser hole opener to move up and down to adjust the opening height. The laser hole opener can directly achieve precise opening of the distribution cabinet. The bracket 2 is symmetrically fixed at the top of both ends of the support base 1 to support the arc-shaped positioning block 3. The top of the arc-shaped positioning block 3 is used to rotate and install the ring mounting plate 8. Its arc structure is adapted to the rotation trajectory of the ring mounting plate 8, reducing the frictional resistance when the ring mounting plate 8 rotates, ensuring that the ring mounting plate 8 rotates smoothly. At the same time, it can also play a positioning and limiting role for the ring mounting plate 8 to prevent the ring mounting plate 8 from deviating during rotation. The annular mounting plate 8 serves as the mounting carrier for the clamping components, used for placing and initially positioning the distribution cabinet. Simultaneously, the annular mounting plate 8 can rotate on top of the arc-shaped positioning block 3, causing the clamped distribution cabinet to rotate synchronously, thus adjusting the angle of the distribution cabinet's opening position. Connecting ring 1 9 is fixed to one side of the annular mounting plate 8 and connected to connecting ring 2 7 via a transmission belt. It receives power transmitted from connecting ring 2 7, causing the annular mounting plate 8 to rotate synchronously. The servo motor 5 precisely controls the rotation angle and speed of the output rotating rod 6, thereby driving the annular mounting plate 8 through connecting ring 2 7, the transmission belt, and connecting ring 1 9. Plate 8 rotates precisely to achieve accurate adjustment of the opening angle of the power distribution cabinet. Rotating rod 6 passes through two rectangular blocks 4, with one end fixed to the output end of servo motor 5. It can transmit the power of servo motor 5 to the outer connecting ring 7. The clamping assembly is used to stably clamp the power distribution cabinet inside the annular mounting plate 8 to prevent the power distribution cabinet from shaking or shifting during the opening process. The locking assembly is set in the center of the annular mounting plate 8 to fix the position of the clamping assembly. When the clamping assembly is adjusted to a suitable clamping state, the locking assembly can lock it to prevent the clamping assembly from loosening during the opening process.

[0018] The clamping assembly includes four guide rods 10, which are fixedly installed circumferentially inside the annular mounting plate 8. A sleeve 11 is fixedly installed between the four guide rods 10. A fixing ring 12 is fixedly installed on the outer side of the sleeve 11 near one end. Several fixing holes 13 are circumferentially opened on one side of the fixing ring 12.

[0019] In this embodiment, by fixing the four guide rods 10 circumferentially at equal intervals inside the annular mounting plate 8, a linear guide is provided for the subsequent movement of the clamping plate 22, ensuring that the clamping plate 22 moves along a fixed trajectory and preventing the clamping plate 22 from shifting and affecting the clamping effect. Simultaneously, the fixed connection between the four guide rods 10 supports and fixes the sleeve 11, ensuring the stability of the sleeve 11's installation position within the annular mounting plate 8. The sleeve 11, fixed between the four guide rods 10, serves to connect and stabilize the four guide rods 10, enhancing the overall structural strength of the guide rods 10 and preventing the guide rods from shifting. 10 deforms under stress. On the other hand, the inside of the sleeve 11 is used to rotate and install the mounting tube 14, providing rotation space and support for the mounting tube 14. The fixing ring 12 is fixed on the outer side of the sleeve 11 near one end, providing a carrier for opening the fixing hole 13. The fixing hole 13 is for the insertion of the locking component's plug rod 20. By selecting different positions of the fixing hole 13 to insert the plug rod 20, the rotation angle of the square plate 15 can be adjusted, thereby adjusting the clamping range of the clamping plate 22, realizing the adaptation and clamping of distribution cabinets of different sizes. At the same time, after insertion, the position of the square plate 15 can be fixed to ensure the stability of the clamping component.

[0020] The clamping assembly also includes a mounting tube 14, which is rotatably mounted inside the sleeve 11. A square plate 15 is fixedly mounted on the outer side of the mounting tube 14 near the fixing ring 12. An insertion hole 17 is provided on one side of the square plate 15, and the insertion hole 17 corresponds to the position of the fixing hole 13.

[0021] In this embodiment, by rotating the mounting tube 14 inside the sleeve 11, it can rotate flexibly, providing rotational support for the square plate 15 and driving the square plate 15 to rotate synchronously. On the other hand, it provides movable installation space for the mounting rod 18 of the locking assembly. The square plate 15 is fixed on the outer side of the mounting tube 14 near the fixing ring 12. When the mounting tube 14 rotates, the clamping plate 22 can be moved by the arc-shaped connecting rod 21. The insertion hole 17 is opened on one side of the square plate 15, corresponding to the position of the fixing hole 13 on the fixing ring 12, so that the insertion rod 20 of the locking assembly can pass through and cooperate with the fixing hole 13 to achieve position fixation.

[0022] The clamping assembly also includes four clamping plates 22. A circular hole is provided on one side of the clamping plate 22. The guide rod 10 is movably sleeved inside the circular hole. Two limiting grooves are symmetrically provided on the outer side of the guide rod 10. Two limiting blocks are symmetrically fixedly installed on the inner side of the circular hole. The limiting blocks are movably sleeved inside the limiting groove.

[0023] In this embodiment, by setting four clamping plates 22 in cooperation, the power distribution cabinet can be clamped from all sides. The round hole on one side of the clamping plate 22 provides installation space for the guide rod 10, ensuring that the clamping plate 22 can move along the guide rod 10, thereby realizing the clamping or loosening action. The limiting groove is symmetrically opened on the outside of the guide rod 10, providing the limit block with the activity space, preventing the clamping plate 22 from rotating around the guide rod 10, ensuring that the clamping plate 22 always maintains the correct clamping posture, and preventing the clamping plate 22 from rotating and causing poor contact with the power distribution cabinet, which would affect the clamping effect.

[0024] The clamping assembly also includes four arc-shaped connecting rods 21, which are disposed between the square plate 15 and the guide rod 10. One end of the arc-shaped connecting rod 21 is rotatably mounted on the clamping plate 22 near the end of the square plate 15, and the other end of the arc-shaped connecting rod 21 is rotatably mounted on the side of the square plate 15 near the guide rod 10, and is located at the corner of the square plate 15.

[0025] In this embodiment, by connecting one end of the arc-shaped connecting rod 21 to the clamping plate 22 and the other end to the square plate 15 and allowing it to rotate, the rotational force of the square plate 15 can be transmitted to the clamping plate 22, causing the clamping plate 22 to move along the guide rod 10. The arc-shaped structure is adapted to the trajectory of the square plate 15 when it rotates, avoiding jamming during transmission and ensuring smooth movement of the clamping plate 22. At the same time, the four arc-shaped connecting rods 21 can work together to make the four clamping plates 22 move synchronously, ensuring uniform clamping force.

[0026] The locking assembly includes a mounting rod 18, which is movably mounted inside the mounting tube 14. A spring 16 is fixedly mounted on one end of the mounting rod 18, and the other end of the spring 16 is fixedly mounted to one side of the inside of the mounting tube 14.

[0027] In this embodiment, the mounting rod 18 is movably installed inside the mounting tube 14 and can move axially along the mounting tube 14. The two ends of the spring 16 are respectively fixed to one end of the mounting rod 18 and one side inside the mounting tube 14. In its natural state, it provides a restoring force to the mounting rod 18. When the mounting rod 18 is pulled to unlock, the elastic restoring force of the spring 16 can push the mounting rod 18 to automatically reset, causing the insertion rod to be re-inserted into the fixing hole to complete the locking, thus ensuring the stability of the locking state.

[0028] The locking assembly also includes a connecting plate 19, which is fixedly installed on the outer side of the mounting rod 18 away from the square plate 15. A plug rod 20 is fixedly installed on the side of the connecting plate 19 close to the square plate 15. The other end of the plug rod 20 passes through the plug hole 17 and is movably sleeved inside the fixing hole 13. A handwheel is fixedly installed on the end of the mounting rod 18 away from the square plate 15.

[0029] In this embodiment, the connecting plate 19 is fixed to the outer side of the mounting rod 18 away from the square plate 15 to connect the mounting rod 18 and the insertion rod 20. The axial movement of the mounting rod 18 is converted into the synchronous movement of the insertion rod 20. When the insertion rod 20 is inserted into the fixing hole 13, it can lock the square plate 15 and the fixing ring 12 to prevent the square plate 15 from rotating and causing the clamping plate 22 to loosen. When it is pulled out, the locking is released, allowing the position of the square plate 15 to be adjusted to fit different specifications of distribution cabinets. The handwheel is fixed to the end of the mounting rod 18 away from the square plate 15, providing a convenient force application point for the operator.

[0030] The inner side of the mounting tube 14 is symmetrically provided with several slots, and the outer side of the mounting rod 18 is fixedly installed with several blocks, which are movably engaged with the slots.

[0031] In this embodiment, by engaging the slot and the block, when the handwheel is turned to rotate the mounting rod 18, the rotational force of the mounting rod 18 can be transmitted to the mounting tube 14 through the block and the slot, causing the mounting tube 14 to rotate synchronously, thus providing a power transmission path for the subsequent rotation of the square plate 15 and adjustment of the position of the clamping plate 22.

[0032] In summary: When using this utility model, first use a crane to lift the distribution cabinet to the top of the support base 1 and place it between the two annular mounting plates 8. At this time, manually pull the handwheel. The handwheel drives the mounting rod 18 to move axially along the mounting tube 14. The spring 16 is stretched. The movement of the mounting rod 18 also drives the outer fixed connecting plate 19 to move synchronously. The connecting plate 19 drives the plug rod 20 fixed on one side to be pulled out from the fixing hole 13 of the fixing ring 12 for unlocking. Next, manually turn the handwheel. The handwheel drives the mounting rod 18 to rotate. The mounting rod 18 transmits the rotational force to the mounting tube 14 through the outer locking block, causing the mounting tube 14 to rotate inside the sleeve 11. The mounting tube 14 drives the square plate 15 fixed on the outside to rotate synchronously. When the square plate 15 rotates, one end of the arc-shaped connecting rod 21 installed at its corner rotates with the square plate 15, and the other end pulls the clamping plate 22 to move along the guide rod 10. The guide rod 10 plays a linear guiding role for the clamping plate 22, and the limiting groove on the outside of the guide rod 10 cooperates with the limiting block on the inside of the round hole of the clamping plate 22 to prevent the clamping plate 22 from rotating around the guide rod 10, ensuring that the four clamping plates 22 approach the distribution cabinet synchronously and clamp it from all sides. After clamping, the handwheel is released, and the spring 16 returns to its elastic deformation, pulling the mounting rod 18 back to its original position. The mounting rod 18 drives the connecting plate 19 and the insertion rod 20 to return to their original positions. The insertion rod 20 is reinserted into the fixing hole 13 at the corresponding position of the fixing ring 12. The clamping state of the fixing plate 22 is maintained to prevent the power distribution cabinet from shaking. Then, the servo motor 5 and the drive motor are connected to external power supply and the drive motor is started. The drive motor drives the screw inside the rectangular rod slide to rotate. The screw drives the L-shaped rod connected to the outer thread to move along the slide through the thread transmission. The L-shaped rod drives the hydraulic rod fixed at the other end to move synchronously. The hydraulic rod drives the laser hole opener fixed at the output end to adjust to the horizontal position of the hole to be opened in the power distribution cabinet. Then the hydraulic rod is started again. The hydraulic rod extends and retracts, driving the laser hole opener to move up and down to the appropriate opening height. The laser hole saw is activated to drill a hole in the power distribution cabinet. If the drilling angle of the power distribution cabinet needs to be adjusted, the servo motor 5 is activated. The servo motor 5 drives the rotating rod 6 fixed at the output end to rotate. The rotating rod 6 rotates stably under the support of the rectangular block 4, and at the same time drives the connecting ring 7 fixed on the outside to rotate synchronously. The connecting ring 7 transmits power to the connecting ring 9 fixed on one side of the annular mounting plate 8 through the transmission belt. The connecting ring 9 drives the annular mounting plate 8 to rotate on the top of the arc-shaped positioning block 3. The arc-shaped structure of the arc-shaped positioning block 3 adapts to the rotation trajectory of the annular mounting plate 8 and limits it. The annular mounting plate 8 drives the fixed power distribution cabinet to rotate synchronously to the required drilling angle. Then, the above operation of the drive motor, hydraulic rod and laser hole saw is repeated to complete the drilling operation at different positions and angles.

Claims

1. A modular prefabricated switchgear opening device comprising a support base (1), characterized in that, A perforation mechanism is provided on one side of the support base (1). Four brackets (2) are symmetrically fixedly installed on the top of both ends of the support base (1). An arc-shaped positioning block (3) is fixedly installed on the top of two brackets (2). An annular mounting plate (8) is rotatably installed on the top of the arc-shaped positioning block (3). A connecting ring (9) is fixedly installed on one side of each of the two annular mounting plates (8). Two rectangular blocks (4) are symmetrically fixedly installed on the top of both ends of the support base (1) and in the position between the two brackets (2). A servo motor (5) is fixedly installed on one side of the rectangular block (4). (5) has a rotating rod (6) fixedly installed at the output end. The rotating rod (6) passes through two rectangular blocks (4). Two connecting rings (7) are fixedly installed on the outside of the rotating rod (6) and at the bottom of the two connecting rings (9). The connecting rings (9) and (7) are connected together by a transmission belt. The annular mounting plate (8) has a clamping assembly for stabilizing the distribution cabinet. The center of the annular mounting plate (8) and one side of the clamping assembly have a locking assembly. The clamping assembly consists of a guide rod (10) and a square plate (15).

2. The modular prefabricated switchgear opening device according to claim 1, characterized in that The clamping assembly includes four guide rods (10), which are fixedly installed circumferentially inside the annular mounting plate (8). A sleeve (11) is fixedly installed between the four guide rods (10). A fixing ring (12) is fixedly installed on the outer side of the sleeve (11) near one end. Several fixing holes (13) are circumferentially opened on one side of the fixing ring (12).

3. The modular prefabricated distribution cabinet opening device according to claim 2, characterized in that, The clamping assembly also includes an installation tube (14), which is rotatably installed inside the sleeve (11). A square plate (15) is fixedly installed on the outer side of the installation tube (14) near the fixing ring (12). An insertion hole (17) is provided on one side of the square plate (15), and the insertion hole (17) corresponds to the position of the fixing hole (13).

4. The modular prefabricated distribution cabinet opening device according to claim 3, characterized in that, The clamping assembly also includes four clamping plates (22). A circular hole is provided on one side of the clamping plate (22). The guide rod (10) is movably sleeved inside the circular hole. Two limiting grooves are symmetrically provided on the outer side of the guide rod (10). Two limiting blocks are symmetrically fixedly installed on the inner side of the circular hole. The limiting blocks are movably sleeved inside the limiting groove.

5. The modular prefabricated distribution cabinet opening device according to claim 4, characterized in that, The clamping assembly also includes four arc-shaped connecting rods (21). The arc-shaped connecting rods (21) are arranged between the square plate (15) and the guide rod (10). One end of the arc-shaped connecting rod (21) is rotatably mounted on the clamping plate (22) near the end of the square plate (15), and the other end of the arc-shaped connecting rod (21) is rotatably mounted on the side of the square plate (15) near the guide rod (10) and located at the corner of the square plate (15).

6. The modular prefabricated distribution cabinet opening device according to claim 3, characterized in that, The locking assembly includes a mounting rod (18), which is movably mounted inside the mounting tube (14). A spring (16) is fixedly mounted on one end of the mounting rod (18), and the other end of the spring (16) is fixedly mounted to one side of the inside of the mounting tube (14).

7. The modular prefabricated distribution cabinet opening device according to claim 6, characterized in that, The locking assembly also includes a connecting plate (19), which is fixedly installed on the outer side of the mounting rod (18) away from the square plate (15). A plug rod (20) is fixedly installed on the side of the connecting plate (19) close to the square plate (15). The other end of the plug rod (20) passes through the insertion hole (17) and is movably sleeved inside the fixing hole (13). A handwheel is fixedly installed on the end of the mounting rod (18) away from the square plate (15).

8. The modular prefabricated distribution cabinet opening device according to claim 7, characterized in that, The inner side of the mounting tube (14) is symmetrically provided with several slots, and the outer side of the mounting rod (18) is fixedly installed with several blocks, which are movably engaged with the slots.

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