Protective electrical automation power distribution cabinet

Abstract

The invention relates to the technical field of power distribution cabinets, and discloses a protection type electrical automation power distribution cabinet which comprises a cabinet door, steel plates are movably connected to the two sides of a cabinet body, a supporting device is movably connected to the bottom of the inner end of the cabinet body, the supporting device comprises a bottom plate, and a gear and a rack are movably connected to the top of the bottom plate. The top of the supporting device is connected with a heat dissipation device, the heat dissipation device comprises a fixed block, the top of the fixed block is connected with a fan, the top of the inner end of the cabinet body is movably connected with a movable device, the movable device comprises an L-shaped plate A, and the top of the L-shaped plate A is fixedly connected with an L-shaped plate B and an L-shaped plate C. The heat dissipation device dissipates heat at the bottom of the cabinet body to prevent the internal temperature of the cabinet body from being too high, the steel plates on the two sides of the cabinet body can move, and the supporting device and the movable device are opened to enable internal and external air to fully flow so as to reduce the internal high temperature of the cabinet body.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution cabinets, in particular to a protective electrical automation power distribution cabinet. Background Art

[0002] The distribution cabinet is divided into power distribution cabinet, lighting distribution cabinet and metering cabinet. It is the final equipment of the distribution system. The distribution cabinet is a general term for the motor control center. The distribution cabinet is used in occasions with relatively dispersed loads and fewer circuits; the motor control center is used in occasions with concentrated loads and more circuits.

[0003] In the prior art, "an outdoor waterproof power distribution cabinet (CN113964677A)" includes a box body, a water tank is fixedly connected to the rear of the box body, a baffle is fixedly connected to the top of the box body through a connecting plate, the bottom of the box body and the water tank are fixedly connected to a support column, the bottom end of the support column is fixedly connected to a cone, the bottom end of the cone is fixedly connected to a collection box, the bottom of the water tank is connected to a water pipe, the front of the water tank is connected to a pipeline, the inner wall of the box body is fixedly connected to a support plate, and the surface of the support plate is fixedly connected to a fan. The present invention can block rainwater through the baffle to prevent rainwater from entering the power distribution cabinet, thereby causing a short circuit in the internal electrical components, thereby increasing the service life of the power distribution cabinet. At the same time, the baffle will guide the rainwater to enter the water tank, and then the water in the water tank will dissipate heat to the power distribution cabinet, thereby increasing the heat dissipation effect of the power distribution cabinet. The baffle is set to block rainwater to achieve a protective effect.

[0004] However, the above-mentioned distribution cabinet has poor fire prevention function. For example, the prior art discloses a "protective electrical automation distribution cabinet (CN110212424B)", which includes a cabinet body, an installation cavity inside the cabinet body, and one or more distribution modules are arranged side by side on the bottom surface of the installation cavity. Each group of distribution modules includes a distribution box, and a base is arranged at the bottom of the distribution box. The distribution box has a distribution cavity inside. The top of the distribution cavity is open, and a distribution board is movably installed in the distribution cavity. The distribution board is provided with more than one screw hole, and the distribution module is installed on the distribution board by screws. More than one sealing part is installed in the blank area of ​​the distribution board, and more than one heat dissipation port is arranged on the front end surface of the distribution box in a staggered manner with the sealing part. An elastic ejection mechanism is arranged at the bottom of each distribution board. The present invention has very good fire prevention performance. When a fire occurs, it can automatically seal the entire distribution cavity to prevent internal air from entering, thereby achieving the purpose of internal flame retardancy, increasing the fire prevention level, and at the same time having the conditions for heat dissipation.

[0005] However, when summer comes, the outdoor temperature is higher than the indoor temperature, and the high-intensity operation of electrical appliances inside the cabinet is more likely to cause a fire. In order to prevent explosions or fires, a protective electrical automation distribution cabinet is invented to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a protective electrical automation distribution cabinet.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a protective electrical automation distribution cabinet, comprising a cabinet body, a cabinet door is movably connected to the front end of the cabinet body, steel plates are movably connected to both sides of the cabinet body, and the bottom of the inner end of the cabinet body is movably connected to a supporting device, and the supporting device comprises a lifting column, and concave blocks are connected to both ends of the lifting column. When the concave blocks are pulled by the lifting columns, the movement of the square plate movably connected to the top is driven, so that the two ends of the square plate can be aligned with the inner side of the movable steel plate, and the steel plates on both sides of the cabinet body are opened by thrust, so that the outside air flows into the inside, and the existence of hot air is reduced;

[0008] The top of the support device is connected to a heat dissipation device, which includes a cylinder, and the top of the cylinder is connected to a hollow rod. When the cylinder pulls the hollow rod to move, the small fan connected to the top of the hollow rod will move together, thereby changing its position to dissipate heat inside the cabinet;

[0009] The top of the cabinet is movably connected with a movable device, which includes a hydraulic cylinder. An L-shaped plate B is fixedly connected to the top of the hydraulic cylinder. When the hydraulic cylinder pushes the L-shaped plate B to move to both sides, it will touch the top part of the steel plate, and expand the steel plate 3 whose bottom has been opened from the top to both sides again, thereby increasing the heat dissipation effect.

[0010] Preferably, the supporting device comprises a base plate, four short plates are fixedly connected to the top of the base plate, the tops of the four short plates are fixedly connected to first sliding rods, and the outer surfaces of the four first sliding rods are movably connected to two first sliding blocks.

[0011] Preferably, a lifting column is fixedly connected to the center top of the base plate, both ends of the lifting column are fixedly connected to concave blocks, gears are movably connected to the center grooves of the two concave blocks, the tops of the two gears are movably connected to racks, the tops of the two racks are fixedly connected to the square plate, and the tops of the two square plates are correspondingly connected to heat dissipation devices.

[0012] Preferably, the heat dissipation device includes a square rod, two second sliding blocks are movably connected to both sides of the top of the square rod, two hollow rods are fixedly connected to the top of four second sliding blocks, two fixed blocks are fixedly connected to the top of two hollow rods, four fixed blocks are fixedly connected to the top of support columns, and small fans are movably connected to the top of four support columns.

[0013] Preferably, cylinders are fixedly connected on both sides of the top of the square rod, and the output shaft ends of the two cylinders are fixedly connected to the two second sliding blocks, two long rods are fixedly connected to the hollow center of the square rod, a motor is fixedly connected between the two long rods, a thin plate is fixedly connected to the two long rods and the top of the motor, a cylinder is movably connected to the center of the top of the thin plate, a long strip is movably connected to the top of the cylinder, two short columns are fixedly connected to both ends of the top of the long strip, and a connecting column is movably connected to one end of the outer surface of the two short columns.

[0014] Preferably, the movable device includes a long board base, and second sliding rods are fixedly connected to both sides of the top of the long board base, and the tops of two second sliding rods are movably connected to L-shaped plates A, and the tops of two L-shaped plates A are fixedly connected to two L-shaped plates B and L-shaped plates C.

[0015] Preferably, the tops of the two L-shaped plates C are fixedly connected with telescopic columns, the inner side of one of the L-shaped plates B is fixedly connected with an elliptical block, the inner side of the elliptical block is fixedly connected with a hydraulic cylinder, and the bottom end of the hydraulic cylinder is connected to the outer side of the other L-shaped plate B.

[0016] Compared with the prior art, the present invention provides a protective electrical automation distribution cabinet, which has the following beneficial effects:

[0017] 1. The protective electrical automation distribution cabinet is provided with a lifting column on the top of the bottom plate, and can use the thrust of the lifting column to move the concave blocks connected on both sides to both sides. When the concave blocks are expanded to both sides, the gears movably connected at the grooves of the concave blocks will drive the racks meshing with the top of the gears to continue to extend forward. The top of the racks is fixedly connected to the bottom of the square plate, so that the square plate can open the movable steel plates on both sides of the cabinet from the bottom through the thrust of the lifting column, so that the outside air can flow into the inside, reduce the large amount of heat generated in the cabinet, and prevent the temperature from getting higher and higher and causing an explosion.

[0018] 2. The protective electrical automation distribution cabinet, by arranging cylinders on both sides of the top of the square rod, can use the two opposite cylinders to drive the movement of the second sliding block fixedly connected to the top, so that the second sliding block can also drive the movement of the small fan connected to the top during the movement, and the hollow rod moves along the two sides of the square rod under the pull of the two cylinders. When summer comes, the outdoor temperature is higher than the indoor temperature. At this time, the movement of the small fans on both sides can dissipate heat inside the cabinet, cool down in multiple directions, and ensure that the temperature inside the cabinet will not be too high.

[0019] 3. This protective electrical automation distribution cabinet, by arranging the motor on both sides of the center of the square rod, can not only fix and support the motor, but also facilitate the motor to generate electricity to drive the device connected on the top to operate. When the temperature inside the cabinet becomes higher and higher, the motor generates electricity to drive the top cylinder to rotate. The top of the cylinder is movably connected to the bottom of the long strip, so the long strip will swing left and right under the drive of the cylinder, so that the connecting columns connected at both ends of the top of the long strip will also swing left and right, thereby driving the movement of the hollow rod connected to the other end of the connecting column, so that the small fan connected to the top of the hollow rod accelerates the heat dissipation of the electrical appliances inside the cabinet, effectively preventing the occurrence of fire.

[0020] 4. The protective electrical automation distribution cabinet, by setting the hydraulic cylinder on the top of the long plate base, can drive the movement of the L-shaped plate B connected to the output shaft end when the hydraulic cylinder extends forward. The bottoms of the two L-shaped plates B are fixedly connected to the top of the L-shaped plate A, so the L-shaped plate A will be pushed to move above the two second sliding rods. When the telescopic column connected to the top of the L-shaped plate C moves forward in the hydraulic cylinder, the telescopic column will continue to expand forward at this time, and the steel plate opened at the bottom of the cabinet will be pushed to both sides from the top again to unfold. The steel plates on both sides of the opened cabinet are to prevent the temperature inside the cabinet from being too high. The opened steel plates can circulate the air outside and inside the cabinet. In addition, the small fan in the heat dissipation device at the bottom of the cabinet moves back and forth to blow air, which can reduce the risk of fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the front structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the supporting device and the heat dissipation device of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the support device of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection relationship structure of the concave blocks of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the heat dissipation device of the present invention;

[0027] Figure 7 It is a schematic diagram of the structural connection relationship of part of the heat dissipation device of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the movable device of the present invention.

[0029] In the figure: 1. cabinet body; 2. cabinet door; 3. steel plate; 4. supporting device; 41. bottom plate; 42. short plate; 43. first sliding rod; 44. first sliding block; 45. lifting column; 46. concave block; 47. gear; 48. rack; 49. square plate; 5. heat dissipation device; 51. square rod; 52. second sliding block; 53. hollow rod; 54. fixed block; 55. supporting column; 56. small fan; 57. cylinder; 58. long rod; 59. motor; 5010. thin plate; 5011. cylinder; 5012. long strip plate; 5013. short column; 5014. connecting column; 6. movable device; 61. long plate base; 62. second sliding rod; 63. L-shaped plate A; 64. L-shaped plate B; 65. L-shaped plate C; 66. telescopic column; 67. hydraulic cylinder; 68. elliptical block. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 8 A protective electrical automation distribution cabinet comprises a cabinet body 1, wherein a cabinet door 2 is arranged at the front end of the cabinet body 1, and the front end of the cabinet body 1 is movably connected to one side of the cabinet door 2, steel plates 3 are arranged on both sides of the cabinet body 1, and both sides of the cabinet body 1 are movably connected to the top of the steel plates 3, a supporting device 4 is arranged at the bottom of the inner end of the cabinet body 1, and the bottom of the inner end of the cabinet body 1 is movably connected to the outer surface of the supporting device 4, and the supporting device 4 comprises a lifting column 45, and both ends of the lifting column 45 are connected to a concave block 46, and when the concave block 46 is pulled by the lifting column 45, it will drive the movement of the square plate 49 movably connected at the top, so that the two ends of the square plate 49 can be aligned with the inner side of the movable steel plate 3, and the steel plates 3 on both sides of the cabinet body 1 are opened by thrust, so that the outside air flows with the inside, and the existence of heat is reduced;

[0032] The top of the support device 4 is connected to a heat dissipation device 5, and the heat dissipation device 5 includes a cylinder 57, and the top of the cylinder 57 is connected to a hollow rod 53. When the cylinder 57 pulls the hollow rod 53 to move, the small fan 56 connected to the top of the hollow rod 53 will move together, thereby changing its position to dissipate heat inside the cabinet 1;

[0033] The top of the cabinet 1 is movably connected to a movable device 6, and the movable device 6 includes a hydraulic cylinder 67. The top of the hydraulic cylinder 67 is fixedly connected to an L-shaped plate B64. When the hydraulic cylinder 67 pushes the L-shaped plate B64 to move to both sides, it will touch the top part of the steel plate 3, and expand the steel plate 3 whose bottom has been opened from the top to both sides again, thereby increasing the heat dissipation effect.

[0034] The supporting device 4 includes a bottom plate 41, four short plates 42 are arranged on the top of the bottom plate 41, and the top of the bottom plate 41 is fixedly connected to the bottom of the four short plates 42, a first sliding rod 43 is arranged on the top of the four short plates 42, and the top of the four short plates 42 is fixedly connected to the bottom of the first sliding rod 43, two first sliding blocks 44 are arranged on the outer surfaces of the four first sliding rods 43, and the outer surfaces of the four first sliding rods 43 are slidably connected to the inside of the two first sliding blocks 44.

[0035] A lifting column 45 is provided at the center top of the bottom plate 41, and the center top of the bottom plate 41 is fixedly connected to the bottom of the lifting column 45, two concave blocks 46 are provided at both ends of the lifting column 45, and the two ends of the lifting column 45 are fixedly connected to the tail ends of the two concave blocks 46, gears 47 are provided at the center grooves of the two concave blocks 46, and the center grooves of the two concave blocks 46 are movably connected to the two sides of the gears 47, racks 48 are provided at the tops of the two gears 47, and the tops of the two gears 47 are movably connected to the bottoms of the racks 48. By providing a lifting column at the top of the bottom plate 41 45, the concave blocks 46 connected on both sides can be moved to both sides by the thrust of the lifting column 45, and the gear 47 movably connected at the groove of the concave block 46 will drive the rack 48 meshing and connected at the top of the gear 47 to continue to extend forward when the concave block 46 expands to both sides, and the top of the rack 48 is fixedly connected to the bottom of the square plate 49, so that the square plate 49 will open the movable steel plates 3 on both sides of the cabinet 1 from the bottom through the thrust of the lifting column 45, so that the outside air will flow into the inside, reduce the large amount of heat generated in the cabinet 1, and prevent the temperature from getting higher and higher and causing an explosion. The tops of the two racks 48 are both provided with square plates 49, and the tops of the two racks 48 are both fixedly connected to the bottom of the square plates 49, and the tops of the two square plates 49 are connected to the heat dissipation device 5.

[0036] The heat dissipation device 5 includes a square rod 51, two second sliding blocks 52 are arranged on both sides of the top of the square rod 51, and both sides of the top of the square rod 51 are movably connected to the bottom of the two second sliding blocks 52, two hollow rods 53 are arranged on the top of the four second sliding blocks 52, and the tops of the four second sliding blocks 52 are fixedly connected to the bottoms of the two hollow rods 53, two fixed blocks 54 are arranged on the tops of the two hollow rods 53, and the tops of the two hollow rods 53 are fixedly connected to the bottoms of the two fixed blocks 54, and the tops of the four fixed blocks 54 are arranged on the tops of the four fixed blocks 54, and the tops of the four fixed blocks 54 are connected to the bottoms of the support columns 55. The top of the four support columns 55 is fixedly connected, and a small fan 56 is arranged on each of the tops of the four support columns 55. By arranging cylinders 57 on both sides of the top of the square rod 51, the two opposite cylinders 57 can be used to drive the movement of the second sliding block 52 fixedly connected to the top, so that the second sliding block 52 can also drive the movement of the small fan 56 connected to the top during the movement. The hollow rod 53 moves along the two sides of the square rod 51 under the pull of the two cylinders 57. In the summer, the outdoor temperature is higher than the indoor temperature. At this time, the movement of the small fans 56 on both sides can dissipate heat inside the cabinet 1, cool down in multiple directions, and ensure that the temperature inside the cabinet 1 is not too high. The tops of the four support columns 55 are movably connected to the bottom of the small fan 56.

[0037] Cylinders 57 are provided on both sides of the top of the square rod 51, and both sides of the top of the square rod 51 are fixedly connected to the bottom of the cylinder 57, and the output shaft ends of the two cylinders 57 are fixedly connected to the two second sliding blocks 52, two long rods 58 are provided at the hollow center of the square rod 51, and the hollow center of the square rod 51 is fixedly connected to the two ends of the two long rods 58, a motor 59 is provided between the two long rods 58, and the two long rods 58 are fixedly connected to the two sides of the outer surface of the motor 59, a thin plate 5010 is provided on the top of the two long rods 58 and the motor 59, and the tops of the two long rods 58 and the motor 59 are fixedly connected to the bottom of the thin plate 5010, a cylinder 5011 is provided at the top center of the thin plate 5010, and the top center of the thin plate 5010 is movably connected to the bottom of the cylinder 5011, a long strip plate 5012 is provided at the top center of the cylinder 5011, and the top center of the cylinder 5011 is movably connected to the bottom of the long strip plate 5012 Then, two short columns 5013 are provided at both ends of the top of the long board 5012, and the two ends of the top of the long board 5012 are fixedly connected to the bottom of the two short columns 5013. By arranging the motor 59 on both sides of the center of the square rod 51, it is not only possible to fix and support the motor 59, but also convenient for the motor 59 to generate electricity and drive the device connected at the top to operate. When the temperature in the cabinet 1 becomes higher and higher, the power generation of the motor 59 is used to drive the top cylinder 5011 to rotate. The top of the cylinder 5011 is movably connected to the bottom of the long board 5012, so the long board 5012 will swing left and right under the drive of the cylinder 5011, so that the connecting columns 5014 connected at both ends of the top of the long board 5012 also swing left and right, thereby driving the movement of the hollow rod 53 connected to the other end of the connecting column 5014, so that the small fan 56 connected to the top of the hollow rod 53 accelerates the heat dissipation of the electrical appliances inside the cabinet 1, effectively preventing the occurrence of fire. A connecting column 5014 is provided at one end of the outer surface of the two short columns 5013 , and one end of the outer surface of the two short columns 5013 is movably connected to the front end of the connecting column 5014 .

[0038] The movable device 6 includes a long board base 61, and second sliding rods 62 are arranged on both sides of the top of the long board base 61, and both sides of the top of the long board base 61 are fixedly connected to the bottom of the second sliding rod 62, and L-shaped plates A63 are arranged on the top of the two second sliding rods 62, and the tops of the two second sliding rods 62 are movably connected to the bottom of the L-shaped plates A63, and L-shaped plates B64 and L-shaped plates C65 are arranged on the tops of the two L-shaped plates A63, and the tops of the two L-shaped plates A63 are fixedly connected to the bottoms of the L-shaped plates B64 and L-shaped plates C65,

[0039] A telescopic column 66 is provided on the top of the two L-shaped plates C65, and the tops of the two L-shaped plates C65 are fixedly connected to the outer surfaces of the telescopic columns 66. An elliptical block 68 is provided on the inner side of one of the L-shaped plates B64, and the inner side of one of the L-shaped plates B64 is fixedly connected to the outer side of the elliptical block 68. A hydraulic cylinder 67 is provided on the inner side of the elliptical block 68, and the inner side of the elliptical block 68 is fixedly connected to the output shaft end of the hydraulic cylinder 67, and the bottom end of the hydraulic cylinder 67 is connected to the outer side of the other L-shaped plate C65. By setting the hydraulic cylinder 67 on the top of the long board base 61, when the hydraulic cylinder 67 extends forward, it can drive the movement of the L-shaped plate B64 connected to the output shaft end. The bottoms of the two L-shaped plates B64 are fixedly connected to the top of the L-shaped plate A63, so the L-shaped plate A63 will be pushed to move above the two second sliding rods 62. When the telescopic column 66 connected to the top of the L-shaped plate C65 moves forward in the hydraulic cylinder 67, the telescopic column 66 will continue to expand forward at this time, and the steel plate 3 opened at the bottom of the cabinet 1 will be pushed to both sides from the top again to unfold. The steel plates 3 on both sides of the opened cabinet 1 are to prevent the temperature inside the cabinet 1 from being too high. The opened steel plates 3 can circulate the air between the outside and the inside of the cabinet 1. In addition, the small fan 56 in the heat dissipation device 5 at the bottom of the cabinet 1 moves back and forth to blow air, which can reduce the risk of fire.

[0040] When in use, the heat dissipation device 5 is first used to dissipate heat inside the cabinet 1, and then the support device 4 and the movable device 6 at the bottom and top of the cabinet 1 push the movable steel plates 3 on both sides away to accelerate the heat dissipation effect. The heat dissipation device 5 includes a cylinder 57, and the output shaft ends of the cylinders 57 in two opposite directions are fixedly connected to one side of the second sliding block 52, so that the second sliding block 52 can drive the hollow rod 53 to move by pulling the cylinder 57, so that the small fan 56 connected to the top of the hollow rod 53 can dissipate heat back and forth inside the cabinet 1, and the small fan 56 moving back and forth can enhance the heat dissipation effect. A motor 59 is provided at the hollow center of the square rod 51. The motor 59 generates electricity to drive the top cylinder 5011 and the long plate 5012 to twist left and right, so that the connecting column 5014 movably connected to the top of the long plate 5012 can pull the hollow rod 53 connected to the bottom to move on the outer surface of the square rod 51, preventing the cylinder 57 from having too heavy a pulling force, which results in a slow speed, and speeding up the back and forth movement of the small fan 56 on the hollow rod 53, thereby reducing the temperature inside the cabinet 1. The bottom of the heat dissipation device 5 is connected to a supporting device 4, and the supporting device 4 includes a lifting column 45. When the lifting column 45 is extended to both sides, it will push the movement of the concave blocks 46 connected at both ends. The gear 47 connected to the groove of the concave block 46 will drive the rack 48 meshing at the top to continue to move forward, so that the square plate 49 fixedly connected to the top of the rack 48 moves to the bottom of the movable steel plate 3 on both sides of the cabinet 1, which is convenient for air circulation. After the steel plate 3 is opened to both sides, the movable device 6 at the top inside the cabinet 1 will extend the steel plate 3 to both sides again. The movable device 6 includes a hydraulic cylinder 67. When the hydraulic cylinder 67 is pushed, it will drive the movement of the L-shaped plate B64 connected to the output shaft end, and the bottom of the L-shaped plate B64 is connected to the top of the L-shaped plate A63, so the two L-shaped plates A63 will move on the second sliding rod 62. When the hydraulic cylinder 67 extends forward to a certain extent, the telescopic column 66 connected to the top of one of the L-shaped plates C65 will continue to move forward, thereby pushing the steel plate 3 to expand to both sides again, accelerating the air circulation between the inside and outside of the cabinet 1, and coordinating with the small fan 56 in the heat dissipation device 5 at the bottom of the cabinet 1 to move back and forth to blow air, which can reduce the risk of fire.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective electrical automation distribution cabinet, comprising a cabinet body (1), the front end of the cabinet body (1) is movably connected to a cabinet door (2), both sides of the cabinet body (1) are movably connected to steel plates (3), and the bottom of the inner end of the cabinet body (1) is movably connected to a supporting device (4), characterized in that: The supporting device (4) comprises a lifting column (45), and both ends of the lifting column (45) are connected to a concave block (46). When the concave block (46) is pulled by the lifting column (45), it will drive the movement of the square plate (49) movably connected at the top, so that the two ends of the square plate (49) can be aligned with the inner side of the movable steel plate (3), and the steel plates (3) on both sides of the cabinet (1) are opened by pushing force, so that the outside air flows into the inside, thereby reducing the presence of hot air; The top of the support device (4) is connected to a heat dissipation device (5), the heat dissipation device (5) comprises a cylinder (57), the top of the cylinder (57) is connected to a hollow rod (53), when the cylinder (57) pulls the hollow rod (53) to move, the small fan (56) connected to the top of the hollow rod (53) moves together, thereby changing position to dissipate heat inside the cabinet (1); The top of the cabinet (1) is movably connected to a movable device (6), and the movable device (6) includes a hydraulic cylinder (67). The top of the hydraulic cylinder (67) is fixedly connected to an L-shaped plate B (64). When the hydraulic cylinder (67) pushes the L-shaped plate B (64) to move to both sides, it touches the top part of the steel plate (3), and expands the steel plate 3, whose bottom has been opened, from the top to both sides again, thereby increasing the heat dissipation effect.

2. A protective electrical automation distribution cabinet according to claim 1, characterized in that: The supporting device (4) comprises a bottom plate (41), the top of the bottom plate (41) is fixedly connected to four short plates (42), the tops of the four short plates (42) are all fixedly connected to first sliding rods (43), and the outer surfaces of the four first sliding rods (43) are all movably connected to two first sliding blocks (44).

3. A protective electrical automation distribution cabinet according to claim 2, characterized in that: A lifting column (45) is fixedly connected to the center top of the bottom plate (41), and both ends of the lifting column (45) are fixedly connected to concave blocks (46). The center grooves of the two concave blocks (46) are movably connected to gears (47), the tops of the two gears (47) are movably connected to racks (48), the tops of the two racks (48) are fixedly connected to square plates (49), and the tops of the two square plates (49) are correspondingly connected to heat dissipation devices (5).

4. A protective electrical automation distribution cabinet according to claim 3, characterized in that: The heat dissipation device (5) comprises a square rod (51), two second sliding blocks (52) are movably connected to both sides of the top of the square rod (51), two hollow rods (53) are fixedly connected to the tops of four second sliding blocks (52), two fixed blocks (54) are fixedly connected to the tops of the two hollow rods (53), support columns (55) are fixedly connected to the tops of the four fixed blocks (54), and small fans (56) are movably connected to the tops of the four support columns (55).

5. A protective electrical automation distribution cabinet according to claim 4, characterized in that: Cylinders (57) are fixedly connected to both sides of the top of the square rod (51), and the output shaft ends of the two cylinders (57) are fixedly connected to the two second sliding blocks (52); two long rods (58) are fixedly connected to the hollow center of the square rod (51); a motor (59) is fixedly connected between the two long rods (58); a thin plate (5010) is fixedly connected to the top of the two long rods (58) and the motor (59); a cylinder (5011) is movably connected to the center of the top of the thin plate (5010); a long strip plate (5012) is movably connected to the top of the cylinder (5011); two short columns (5013) are fixedly connected to both ends of the top of the long strip plate (5012); and a connecting column (5014) is movably connected to one end of the outer surface of the two short columns (5013).

6. A protective electrical automation distribution cabinet according to claim 1, characterized in that: The movable device (6) comprises a long board base (61), and second sliding rods (62) are fixedly connected to both sides of the top of the long board base (61), and the tops of the two second sliding rods (62) are movably connected to L-shaped plates A (63), and the tops of the two L-shaped plates A (63) are fixedly connected to two L-shaped plates B (64) and L-shaped plates C (65).

7. A protective electrical automation distribution cabinet according to claim 6, characterized in that: The tops of the two L-shaped plates C (65) are fixedly connected with telescopic columns (66), the inner side of one of the L-shaped plates B (64) is fixedly connected with an elliptical block (68), the inner side of the elliptical block (68) is fixedly connected with a hydraulic cylinder (67), and the bottom end of the hydraulic cylinder (67) is connected to the outer side of the other L-shaped plate B (64).

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