An explosion-proof and anti-sagging pressure relief type power distribution cabinet

Abstract

The present invention discloses an explosion-proof and anti-drooping pressure relief type power distribution cabinet, comprising: a power distribution cabinet, the power distribution cabinet comprising a power distribution cabinet body and a locking anti-drooping part, the locking anti-drooping part on the power distribution cabinet body improves the sealing of the power distribution cabinet body; an explosion-proof pressure relief part, which is arranged on the power distribution cabinet, the explosion-proof pressure relief part comprises a pressure relief part, a pressure relief regulating part and a pressure relief limiter, the pressure relief part, the pressure relief regulating part and the pressure relief limiter are all arranged on the power distribution cabinet; a dustproof heat dissipation part, which is arranged on the power distribution cabinet and is used for ventilation and heat dissipation of the power distribution cabinet. The present invention has a reasonable structural design, a wide range of applicable places, and a good explosion-proof pressure relief effect. It can automatically adjust the pressure relief intensity according to different places and different explosive media, significantly reduce the loss of personnel and property caused by the explosion, and can prevent the cabinet door from sagging.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinets, and more specifically, to an explosion-proof, anti-sagging, and pressure-relief type power distribution cabinet. Background Art

[0002] A power distribution cabinet is a device specifically used to control the power supply of power equipment. A power distribution cabinet usually contains components such as power switches, fuses, wiring terminals, and electric energy meters. Through the flexible combination of these components, the power system can be controlled and protected. A power distribution cabinet usually uses a metal box, which has waterproof, dustproof, and corrosion-resistant properties and can be used in various environments.

[0003] When the distribution cabinet is used in a dangerous workplace with combustible dust or flammable and explosive gases, the flammable dust or explosive gases in the air are easily sucked into the distribution cabinet due to the ventilation and heat dissipation needs of the distribution cabinet. When the flammable dust or flammable and explosive gases inside the distribution cabinet reach a certain concentration, the distribution cabinet will inevitably generate electric sparks during operation, which can easily lead to internal explosions. The explosive gas can easily throw the distribution cabinet door out and spray out of the distribution cabinet at high speed, causing damage to surrounding personnel and property. In addition, since the distribution cabinet door is very heavy, it is difficult to ensure the long-term stability of the cabinet door if only one side of the cabinet door is hinged, which can easily cause the cabinet door to deflect and sag, making it easier for explosive gases or dust to enter the distribution cabinet. Therefore, a distribution cabinet with explosion-proof and anti-sagging pressure relief is designed, which has important use value. Summary of the invention

[0004] In order to overcome the above defects, the present invention provides an explosion-proof and anti-sagging pressure relief type power distribution cabinet, which specifically adopts the following technical solutions:

[0005] An explosion-proof and anti-sagging pressure-relief type power distribution cabinet, comprising:

[0006] A power distribution cabinet, the power distribution cabinet comprising a power distribution cabinet body and a locking anti-drooping member, wherein the locking anti-drooping member is on the power distribution cabinet body to improve the sealing performance of the power distribution cabinet body;

[0007] An explosion-proof pressure relief component, which is arranged on the power distribution cabinet, and the explosion-proof pressure relief component includes a pressure relief component, a pressure relief adjustment component and a pressure relief limit component, and the pressure relief component, the pressure relief adjustment component and the pressure relief limit component are all arranged on the power distribution cabinet;

[0008] A dustproof heat sink is arranged on the power distribution cabinet and is used for ventilating and dissipating heat for the power distribution cabinet.

[0009] Preferably, the power distribution cabinet comprises a power supply protection shell and a protection door, the protection door is arranged on the power supply protection shell, and the power supply protection shell is used to install electrical components.

[0010] Preferably, the locking anti-drooping member includes a locking support bolt, a locking mounting seat and a locking control member, one end of the locking support bolt is arranged on a groove wall on one side of the power supply protective shell, the locking mounting seat is arranged in a locking mounting groove on the protective door, and the locking control member locks the other end of the locking support bolt in the locking mounting seat.

[0011] Preferably, the pressure relief component includes a pressure relief transmission component and a pressure relief buffer component, and both the pressure relief buffer component and the pressure relief transmission component are arranged on the power distribution cabinet.

[0012] Preferably, the pressure relief transmission component includes a pressure relief transmission slide, a pressure relief transmission slider, a screw, a vertical support plate and a thrust ball bearing. The pressure relief transmission slide is arranged on the inner side surface of one side of the protective door, and the pressure relief transmission slider is slidably embedded in the pressure relief transmission slide; one end of the screw rod is fitted through the threaded hole on the pressure relief transmission slider, and the other end of the screw rod rotates to pass through the top surface of the distribution cabinet body, the vertical support plate is sleeved on the other end of the screw rod, and the thrust ball bearing is sleeved on the screw rod between the vertical support plate and the top of the distribution cabinet body.

[0013] Preferably, the pressure relief buffer component includes a pressure relief buffer window, a pressure relief relay block and a second spring, one side of the pressure relief buffer window is hinged to the bottom side of the pressure relief through hole on the protective door to seal the pressure relief through hole; one end of the pressure relief relay block is connected to the pressure relief transmission slider, one end of the second spring is connected to the other side of the pressure relief buffer window, and the other end of the second spring is connected to the other end of the pressure relief relay block.

[0014] Preferably, the pressure relief components are provided in multiple sets, and the multiple sets of pressure relief components are symmetrically distributed on both sides of the protective door.

[0015] Preferably, the pressure relief adjusting component includes a motor, a power transmission rod, a worm and a worm wheel, the motor is arranged on the power supply protective shell, one end of the power transmission rod is arranged on a rotating shaft of the motor, and the two power transmission rods correspond one by one to the two rotating shafts of the motor; the worm is arranged on the other end of the power transmission rod, and the two worms correspond one by one to the two power transmission rods, the worm wheel is sleeved on the other end of the screw, and the worm wheel is meshed with the worm, and the two worm wheels correspond one by one to the screws of the two sets of the pressure relief components.

[0016] Preferably, the pressure relief limit member includes a first limit fixing seat, a second limit fixing seat and a limit rope, the first limit fixing seat is arranged on the inner wall of the protective door on the upper side of the pressure relief through hole, the second limit fixing seat is arranged on the inner wall on the other side of the protective door, one end of the limit rope is connected to the first limit fixing seat, and the other end of the limit rope is connected to the second limit fixing seat.

[0017] Preferably, the dustproof heat dissipation component comprises a heat dissipation fan and a dustproof filter, one end of the heat dissipation fan is connected to the bottom surface of the power supply protection shell, and the dustproof filter is arranged on the top surface of the power supply protection shell.

[0018] The present invention has at least the following beneficial effects:

[0019] 1) The explosion-proof and anti-drooping pressure relief type power distribution cabinet of the present invention has a reasonable structural design, a wide range of applicable places, and a good explosion-proof pressure relief effect. It can automatically adjust the pressure relief intensity according to different places and different explosive media, significantly reduce the loss of personnel and property caused by the explosion, and can prevent the cabinet door from sagging;

[0020] 2) The explosion-proof and anti-drooping pressure relief type distribution cabinet of the present invention is provided with an explosion-proof pressure relief component, which can relieve the explosion gas upward from the pressure relief through hole above the protective door to prevent the explosion gas from throwing out the protective door and the high-speed explosion gas from injuring people and causing property losses.

[0021] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of the explosion-proof and anti-sagging pressure-relief type power distribution cabinet of the present invention;

[0023] Figure 2 This is an explosion-proof, anti-sagging, and pressure-relief type power distribution cabinet of the present invention. Figure 1 A partial enlarged view of middle D;

[0024] Figure 3 It is a top view of the explosion-proof and anti-sagging pressure-relief type power distribution cabinet of the present invention;

[0025] Figure 4 It is a schematic diagram of the left side three-dimensional structure of the explosion-proof and anti-sagging pressure-relief type power distribution cabinet of the present invention;

[0026] Figure 5 It is a schematic diagram of the right side three-dimensional structure of the explosion-proof and anti-sagging pressure-relief type power distribution cabinet of the present invention;

[0027] Figure 6 It is a bottom-up three-dimensional structural schematic diagram of the explosion-proof and anti-sagging pressure-relief type power distribution cabinet of the present invention;

[0028] Figure 7 This is an explosion-proof, anti-sagging, and pressure-relief type power distribution cabinet of the present invention. Figure 1 Schematic diagram of the three-dimensional structure of the cross section in the AA direction;

[0029] Figure 8 This is an explosion-proof, anti-sagging, and pressure-relief type power distribution cabinet of the present invention. Figure 7A partial enlarged view of middle E;

[0030] Fig. 9 This is an explosion-proof, anti-sagging, and pressure-relief type power distribution cabinet of the present invention. Figure 1 Schematic diagram of the three-dimensional structure of the cross section in the middle BB direction;

[0031] Fig.10 This is an explosion-proof, anti-sagging, and pressure-relief type power distribution cabinet of the present invention. Fig. 9 A partial enlarged view of middle F;

[0032] Fig.11 This is an explosion-proof, anti-sagging, and pressure-relief type power distribution cabinet of the present invention. Figure 3 Schematic diagram of the three-dimensional structure in the cross section along the CC direction;

[0033] Fig.12 This is an explosion-proof, anti-sagging, and pressure-relief type power distribution cabinet of the present invention. Fig.11 A partial enlarged view of G in the middle.

[0034] Wherein: 1-power supply protection shell, 2-protection door, 3-support foot, 4-locking support bolt, 5-locking mounting seat, 6-first spring, 7-lock tongue, 8-locking transmission tube, 9-magnetic coil, 10-locking transmission rod, 11-pressure relief transmission slide, 12-pressure relief transmission slider, 13-screw, 14-vertical support plate, 15-thrust ball bearing, 16-rotating seat, 17-pressure relief buffer window, 18-pressure relief relay block, 19-second spring, 20-sealing baffle, 21-motor, 22-power transmission rod, 23-worm, 24-worm wheel, 25-first limit fixing seat, 26-second limit fixing seat, 27-limiting rope, 28-cooling fan, 29-dust filter, 30-locking mounting slot. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described in detail below by way of embodiments with reference to the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0036] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0037] according to Figure 1-Figure 12As shown, an explosion-proof and anti-drooping pressure relief type power distribution cabinet includes a power distribution cabinet, an explosion-proof pressure relief component and a dust-proof heat sink, and the explosion-proof pressure relief component and the dust-proof heat sink are both arranged on the power distribution cabinet. The power distribution cabinet includes a power distribution cabinet body and a locking anti-drooping component, and the locking anti-drooping component is arranged on the power distribution cabinet body. The power distribution cabinet body includes a power supply protective shell 1 and a protective door 2, and the protective door 2 is arranged on the power supply protective shell 1. The power supply protective shell 1 is in the shape of a rectangular groove, and the power supply protective shell 1 is used to install electrical components. A plurality of legs 3 are arranged on the bottom end surface of the power supply protective shell 1, and the power supply protective shell 1 is stably set on the ground by the legs 3. One side of the protective door 2 is hinged on the groove wall opening on one side of the power supply protective shell 1, and is used to seal and cover the groove of the power supply protective shell 1 to improve the internal sealing of the power supply protective shell 1.

[0038] The locking anti-drooping member includes a locking support bolt 4, a locking mounting seat 5 and a locking control member, wherein the locking support bolt 4 is arranged on the power supply protective shell 1, the locking mounting seat 5 is arranged on the protective door 2, and the locking control member is arranged on the locking mounting seat 5. The locking support bolt 4 is in the shape of a rectangular plate as a whole, and a locking groove is arranged on the side of one end of the locking support bolt 4, and the other end of the locking support bolt 4 is horizontally fixedly arranged on the groove wall on the other side of the power supply protective shell 1. Furthermore, three locking support bolts 4 are arranged, and the three locking support bolts 4 are evenly spaced on the groove wall on the other side of the power supply protective shell 1. The locking mounting seat 5 is columnar, and one side of the locking mounting seat 5 is fixedly arranged in the locking mounting groove 30 on the outer surface of the other side of the protective door 2, and the locking mounting groove 30 corresponds to the groove wall on the other side of the power supply protective shell 1.

[0039] A locking hole is provided on one side surface of the locking mounting seat 5, and a locking blind hole is vertically penetrated on the inner wall of the locking hole, and the axis of the locking blind hole is perpendicular to the axis of the locking hole. Further, the locking hole is penetrated by the locking through hole on the bottom surface of the locking mounting groove 30, and the locking through hole corresponds to the locking support bolt 4. When the protective door 2 is closed, one end of the locking support bolt 4 can pass through the locking through hole and enter the locking hole. Further, three locking holes are provided, and the three locking holes correspond to the three locking through holes one by one, and the three locking through holes correspond to the three locking support bolts 4 one by one. It should be noted that when one end of the locking support bolt 4 is inserted into the locking hole, the locking support bolt 4 can play an anti-sagging support role on the other side of the protective door 2 to prevent the protective door 2 from sagging.

[0040] The locking control member includes a first spring 6, a lock tongue 7, a locking transmission tube 8, a magnetic coil 9 and a locking transmission rod 10. The first spring 6 is arranged at the bottom of the locking blind hole, and the lock tongue 7 is slidably embedded at the opening of the locking blind hole. The lock tongue 7 is pushed by the first spring 6 to be inserted into the locking groove, thereby locking the protective door 2 on the notch of the power supply protective shell 1. One end of the locking transmission tube 8 is vertically fixedly arranged on the bottom surface of the locking blind hole in the first spring 6, the magnetic coil 9 is fixedly embedded in the locking transmission tube 8, one end of the locking transmission rod 10 is fixedly arranged on the bottom surface of the lock tongue 7, and the other end of the locking transmission rod 10 is inserted into the magnetic coil 9. Further, the locking transmission rod 10 is a magnet bar. When the magnetic coil 9 is fed with direct current to generate a magnetic field, the lock tongue 7 will be pulled downward through the locking transmission rod 10 to release the locking support bolt 4, so as to open the protective door 2. Further, the locking control member is provided with three sets, and the three sets of the locking control members correspond to the three locking support bolts 4 one by one. This improves the explosion-proof stability of the protection door 2 and prevents the protection door 2 from being thrown away when an explosion occurs inside the power supply protection shell 1 .

[0041] The explosion-proof pressure relief parts include pressure relief parts, pressure relief adjustment parts and pressure relief limit parts, and the pressure relief parts, the pressure relief adjustment parts and the pressure relief limit parts are all arranged on the power distribution cabinet. The pressure relief parts include pressure relief transmission parts and pressure relief buffer parts, and the pressure relief buffer parts and the pressure relief transmission parts are all arranged on the power distribution cabinet. The pressure relief transmission parts include pressure relief transmission slide 11, pressure relief transmission slider 12, screw 13, vertical support plate 14 and thrust ball bearing 15. The pressure relief transmission slide 11 is in the shape of a dovetail groove, and the pressure relief transmission slide 11 is fixedly arranged on the inner side of one side of the protective door 2. The pressure relief transmission slider 12 is in the shape of a dovetail block, and the pressure relief transmission slider 12 is slidably embedded in the pressure relief transmission slide 11. After one end of the screw 13 in the pressure relief transmission slide 11 cooperates to pass through the threaded hole on the pressure relief transmission slider 12, one end of the screw 13 is rotatably arranged on the rotating seat 16 on the bottom end of the pressure relief transmission slide 11. The other end of the screw rod 13 rotates and passes through the top of the power distribution cabinet. The vertical support plate 14 is in the shape of a circular ring plate, and the vertical support plate 14 is fixedly sleeved on the other end of the screw rod 13. The thrust ball bearing 15 is sleeved on the screw rod 13 between the vertical support plate 14 and the top of the power distribution cabinet. When the screw rod 13 rotates, it will drive the pressure relief transmission slider 12 to slide up and down in the pressure relief transmission slide seat 11 through the threaded hole.

[0042] The pressure relief buffer comprises a pressure relief buffer window 17, a pressure relief relay block 18 and a second spring 19. One side of the pressure relief buffer window 17 is hinged on the bottom side of the pressure relief through hole on the protective door 2. The pressure relief through hole is in the shape of a rectangular hole and is located above the protective door 2. Furthermore, a sealing baffle 20 is provided on the inner circle of the pressure relief through hole. The sealing baffle 20 is in the shape of a rectangular frame. The sealing baffle 20 is sealed with the pressure relief buffer window 17 to seal the pressure relief through hole. One end of the pressure relief relay block 18 is fixedly connected to the pressure relief transmission slider 12, one end of the second spring 19 is connected to the inner side wall of the other side of the pressure relief buffer window 17, and the other end of the second spring 19 is connected to the other end of the pressure relief relay block 18. The pressure relief buffer window 17 is sealed and attached to the sealing baffle 20 by the tension of the second spring 19, thereby sealing and blocking the pressure relief through hole. It should be noted that the tension of the second spring 19 on the pressure relief buffer window 17 is adjusted through the pressure relief transmission slider 12, and then the pressure relief buffer force on the pressure relief buffer window 17 is adjusted, so that the explosion-proof and anti-sagging pressure relief type distribution cabinet can adapt to the explosion-proof pressure relief requirements of different places of use, different types of explosions and different explosion powers.

[0043] Furthermore, two sets of the pressure relief components are provided, and the two sets of the pressure relief components are symmetrically distributed on both sides of the protective door 2 to improve the pressure relief sealing effect of the pressure relief through hole and improve the buffering stability of the pressure relief buffer window 17 .

[0044] The pressure relief regulating member includes a motor 21, a power transmission rod 22, a worm 23 and a worm wheel 24. The motor 21 is fixedly arranged on the top surface of the power supply protection shell 1. Further, the motor 21 is a dual-axis motor. One end of the power transmission rod 22 is horizontally fixedly arranged on a rotating shaft of the motor 21, and the two power transmission rods 22 correspond to the two rotating shafts of the motor 21 one by one. The worm 23 is arranged on the other end of the power transmission rod 22, and the two worms 23 correspond to the two power transmission rods 22 one by one. The worm wheel 24 is fixedly sleeved on the other end of the screw 13, and the worm wheel 24 is meshed with the worm 23, and the two worm wheels 24 correspond to the screws 13 of the two sets of the pressure relief members one by one.

[0045] The pressure relief limiter includes a first limiter fixing seat 25, a second limiter fixing seat 26 and a limiter rope 27. The first limiter fixing seat 25 is fixedly arranged on the inner wall of the protective door 2 on the upper side of the pressure relief through hole, the second limiter fixing seat 26 is fixedly arranged on the inner wall on the other side of the protective door 2, one end of the limiter rope 27 is fixedly connected to the first limiter fixing seat 25, and the other end of the limiter rope 27 is fixedly connected to the second limiter fixing seat 26. Two sets of pressure relief limiters are provided, and the two sets of pressure relief limiters are symmetrically distributed on both sides of the protective door 2.

[0046] It should be noted that the limit rope 27 is a steel wire rope, and the length of the limit rope 27 is sufficient to ensure that the other side of the protective door 2 does not rotate more than 45 degrees around the hinge, so that the protective door 2 opens upward, and the explosion gas in the power supply protective shell 1 is relieved upward to prevent the explosion gas from detaching and throwing the protective door 2 away, and prevent the explosion gas that is quickly ejected outward from causing damage to surrounding personnel and property.

[0047] The dustproof heat dissipation component includes a heat dissipation fan 28 and a dustproof filter 29. One end of the heat dissipation fan 28 is connected to the bottom surface of the power supply protective shell 1. The heat dissipation fan 28 is connected to the inside of the power supply protective shell 1 through the heat dissipation through-hole on the bottom surface of the power supply protective shell 1. The dustproof filter 29 is set on the top surface of the power supply protective shell 1. The dustproof filter 29 is connected to the inside of the power supply protective shell 1 through the air inlet through-hole on the top surface of the power supply protective shell 1. The heat dissipation fan 28 extracts hot air from the power supply protective shell 1 and blows it to the bottom of the power supply protective shell 1 to dehumidify the bottom of the power supply protective shell 1 to prevent moisture and rust on the bottom of the power supply protective shell 1. And cooperate with the pressure relief buffer to improve the sealing of the power supply protective shell 1 under normal use.

[0048] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An explosion-proof and anti-sagging pressure relief type power distribution cabinet, characterized in that: include: A power distribution cabinet, the power distribution cabinet comprising a power distribution cabinet body and a locking anti-drooping member, wherein the locking anti-drooping member is on the power distribution cabinet body to improve the sealing performance of the power distribution cabinet body; An explosion-proof pressure relief component, which is arranged on the power distribution cabinet, and the explosion-proof pressure relief component includes a pressure relief component, a pressure relief adjustment component and a pressure relief limit component, and the pressure relief component, the pressure relief adjustment component and the pressure relief limit component are all arranged on the power distribution cabinet; A dustproof heat sink is arranged on the power distribution cabinet and is used for ventilating and dissipating heat for the power distribution cabinet.

2. The explosion-proof and anti-sagging pressure relief type power distribution cabinet according to claim 1 is characterized in that: The power distribution cabinet comprises a power supply protection shell and a protection door. The protection door is arranged on the power supply protection shell. The power supply protection shell is used to install electrical components.

3. The explosion-proof and anti-sagging pressure relief type power distribution cabinet according to claim 2 is characterized in that: The locking anti-drooping component includes a locking support bolt, a locking mounting seat and a locking control component, one end of the locking support bolt is arranged on a groove wall on one side of the power supply protective shell, the locking mounting seat is arranged in the locking mounting groove on the protective door, and the locking control component locks the other end of the locking support bolt in the locking mounting seat.

4. The explosion-proof and anti-sagging pressure relief type power distribution cabinet according to any one of claims 1 to 3, characterized in that: The pressure relief component includes a pressure relief transmission component and a pressure relief buffer component, and both the pressure relief buffer component and the pressure relief transmission component are arranged on the power distribution cabinet.

5. The explosion-proof and anti-sagging pressure-relief type power distribution cabinet according to claim 4 is characterized in that: The pressure relief transmission component includes a pressure relief transmission slide, a pressure relief transmission slider, a screw, a vertical support plate and a thrust ball bearing. The pressure relief transmission slide is arranged on the inner side surface of one side of the protective door, and the pressure relief transmission slider is slidably embedded in the pressure relief transmission slide; one end of the screw rod cooperates to pass through the threaded hole on the pressure relief transmission slider, and the other end of the screw rod rotates to pass through the top surface of the distribution cabinet body, the vertical support plate is sleeved on the other end of the screw rod, and the thrust ball bearing is sleeved on the screw rod between the vertical support plate and the top of the distribution cabinet body.

6. The explosion-proof and anti-sagging pressure-relief type power distribution cabinet according to claim 4 is characterized in that: The pressure relief buffer component includes a pressure relief buffer window, a pressure relief relay block and a second spring. One side of the pressure relief buffer window is hinged to the bottom side of the pressure relief through hole on the protective door to seal the pressure relief through hole. One end of the pressure relief relay block is connected to the pressure relief transmission slider, one end of the second spring is connected to the other side of the pressure relief buffer window, and the other end of the second spring is connected to the other end of the pressure relief relay block.

7. The explosion-proof and anti-sagging pressure-relief type power distribution cabinet according to claim 4 is characterized in that: The pressure relief components are provided in multiple sets, and the multiple sets of pressure relief components are symmetrically distributed on both sides of the protective door.

8. The explosion-proof and anti-sagging pressure-relief type power distribution cabinet according to claim 6 is characterized in that: The pressure relief adjustment component includes a motor, a power transmission rod, a worm and a worm wheel. The motor is arranged on the power supply protective shell. One end of the power transmission rod is arranged on a rotating shaft of the motor, and the two power transmission rods correspond to the two rotating shafts of the motor one by one; the worm is arranged on the other end of the power transmission rod, and the two worms correspond to the two power transmission rods one by one. The worm wheel is sleeved on the other end of the screw, and the worm wheel is meshed with the worm, and the two worm wheels correspond to the screws of the two sets of the pressure relief components one by one.

9. The explosion-proof and anti-sagging pressure-relief type power distribution cabinet according to claim 6, characterized in that: The pressure relief limiter includes a first limit fixing seat, a second limit fixing seat and a limit rope. The first limit fixing seat is arranged on the inner wall of the protective door on the upper side of the pressure relief through hole, and the second limit fixing seat is arranged on the inner wall on the other side of the protective door. One end of the limit rope is connected to the first limit fixing seat, and the other end of the limit rope is connected to the second limit fixing seat.

10. The explosion-proof and anti-sagging pressure-relief type power distribution cabinet according to claim 6, characterized in that: The dustproof heat dissipation component comprises a heat dissipation fan and a dustproof filter. One end of the heat dissipation fan is connected to the bottom surface of the power supply protection shell, and the dustproof filter is arranged on the top surface of the power supply protection shell.

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