Multifunctional instrument protection box for electrical engineering

Abstract

A multifunctional instrument protection box for electrical engineering comprises a box body, a box door, an anti-collision mechanism, a fire extinguishing mechanism and a dust removal mechanism. The electrical engineering instrument is located in the box body and is fixedly connected with a bottom plate of the box body. The anti-collision mechanism is positioned among double-layer plate bodies of a top plate, a left side plate, a right side plate and a rear side plate of the box body; the fire extinguishing mechanism is located above the electrical engineering instrument. The dust removal mechanism is located outside the heat dissipation opening of the box body. The anti-collision function is added, the external force impact resistance of the protection box can be effectively improved, and the damage probability of electrical instrument equipment under external force impact is reduced; a fire extinguishing function is added, once fire is triggered by high temperature, short circuit and the like in the protection box, automatic fire extinguishing can be implemented in the protection box in the first time, open fire is extinguished in the shortest time, and damage of the fire to electrical engineering instruments and equipment is blocked; a dust removal function is added, accumulated dust at the heat dissipation opening can be dynamically removed, the situation that the heat dissipation effect becomes poor due to accumulated dust blockage of the heat dissipation opening is avoided, and the probability that a fire disaster is triggered by high temperature is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical cabinets, and in particular relates to a multifunctional instrument protection box for electrical engineering. Background Art

[0002] With the continuous advancement of electrical engineering technology, the scope of laying power cables is also expanding. During the construction process, it is usually necessary to assemble switchgear, measuring instruments, and various electrical appliances together in a sealed metal cabinet to prevent the electrical instrument equipment in the cabinet from being damaged by external factors.

[0003] At present, most electrical cabinets can only provide simple protection for the internal electrical instruments and equipment through the cabinet body. If there are unexpected situations such as external force impact, the electrical instruments and equipment inside the cabinet body can easily be damaged under the impact force. In addition, with the long-term operation of the electrical cabinet, the electrical instruments and equipment and cables in the cabinet are prone to short circuits due to aging. The electric sparks generated during the short circuit can easily ignite the combustible materials in the cabinet, thereby causing damage to the equipment in the cabinet. In addition, the electrical cabinet will generate high heat during operation, and high heat is also one of the factors that cause the accelerated aging of electrical instruments and cables. Therefore, the cabinet body of the electrical cabinet will have heat dissipation ports, but as time goes by, the heat dissipation ports are easily blocked by dust, resulting in poor heat dissipation, which further increases the aging speed of the electrical instruments and cables, and also increases the probability of high temperature triggering fires. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a multifunctional electrical engineering instrument protection box, which is additionally equipped with an anti-collision function, which can effectively improve the ability of the protection box to resist external force impact and reduce the probability of damage to electrical instruments and equipment under external force impact; it is additionally equipped with a fire extinguishing function. Once a fire is triggered inside the protection box due to high temperature, short circuit, etc., automatic fire extinguishing can be implemented inside the protection box at the first time to extinguish the open flame in the shortest time, thereby preventing the fire from damaging the electrical engineering instruments and equipment; it is additionally equipped with a dust removal function, which can dynamically remove dust accumulated at the heat dissipation port to avoid the heat dissipation effect being deteriorated due to the blockage of the heat dissipation port due to dust accumulation, thereby reducing the probability of fire being triggered by high temperature.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a multifunctional electrical engineering instrument protection box, including a box body, a box door, an anti-collision mechanism, a fire extinguishing mechanism and a dust removal mechanism; the top plate, left side plate, right side plate and rear side plate of the box body are double-layer structures, the bottom plate and front side plate of the box body are single-layer structures, the box door is arranged on the front side plate of the box body, and an observation window is arranged on the box door, the electrical engineering instrument is located inside the box body, and the electrical engineering instrument is fixedly connected to the bottom plate of the box body; the anti-collision mechanism is located between the double-layer plate bodies of the top plate, left side plate, right side plate and rear side plate of the box body; the fire extinguishing mechanism is located above the electrical engineering instrument; the dust removal mechanism is located outside the heat dissipation port of the box body.

[0006] The anti-collision mechanism includes a support plate, a buffer spring, an energy-absorbing damper and a protective plate; the support plate is fixedly connected to the inner plate body of the top plate, the left plate, the right plate and the rear plate of the box body; the protective plate is located on the outside of the support plate, and the protective plate is distributed parallel to the support plate; the buffer spring is located in the gap between the protective plate and the support plate, and the two ends of the buffer spring are respectively fixedly connected to the protective plate and the support plate, and the buffer spring is vertically distributed to the protective plate and the support plate; the energy-absorbing damper is located in the gap between the protective plate and the support plate, and the buffer spring is sleeved on the outside of the energy-absorbing damper, and the two ends of the energy-absorbing damper are respectively fixedly connected to the protective plate and the support plate, and the energy-absorbing damper is vertically distributed to the protective plate and the support plate.

[0007] The buffer springs and energy absorbing dampers are of a plurality and the number is the same, and the plurality of buffer springs and energy absorbing dampers are evenly distributed in the gap between the protective plate and the supporting plate.

[0008] The fire extinguishing mechanism comprises an air pump, a dry powder fire extinguishing agent storage tank, a powder discharge pipe and a powder discharge nozzle; the air pump and the dry powder fire extinguishing agent storage tank are fixedly arranged on the top of the box body, the air inlet of the air pump is connected to the atmosphere, the air outlet of the air pump is connected to the air inlet of the dry powder fire extinguishing agent storage tank, the powder outlet of the dry powder fire extinguishing agent storage tank is connected to the powder inlet of the powder discharge nozzle, and the powder discharge nozzle is installed at the powder outlet of the powder discharge nozzle; the powder discharge nozzle is located in the gap between the top plate of the box body and the electrical engineering instrument, and a nozzle translation drive assembly is arranged between the powder discharge nozzle and the box body; a dry powder fire extinguishing agent filling port is arranged on the top of the dry powder fire extinguishing agent storage tank, and a cover is installed on the dry powder fire extinguishing agent filling port; an electromagnetic switch valve is arranged at the powder inlet of the powder discharge pipe.

[0009] A smoke sensor and a cooling fan are arranged inside the box.

[0010] The nozzle translation drive assembly includes a nozzle translation drive motor, a motor bracket, a drive disk, a drive cam block, a translation slide rod, a guide slide, a translation slide plate, a guide slide block and a guide slide groove; the motor bracket is fixedly installed between the top plate of the box body and the electrical engineering instrument; the nozzle translation drive motor is horizontally fixed on the motor bracket, the motor shaft of the nozzle translation drive motor is fixedly connected to the center of the drive disk, and the drive disk and the motor shaft of the nozzle translation drive motor are vertically distributed; the drive cam block is fixedly arranged on the disk surface of the drive disk, and the center of the drive cam block coincides with the center of the drive disk; the guide slide is fixed The guide slide is connected to the motor bracket; the translation slide is installed on the guide slide, and the translation slide has only axial translation freedom relative to the guide slide; one end of the translation slide is in contact with the driving cam block, and the surface of the translation slide in contact with the driving cam block is a spherical surface; the other end of the translation slide is fixedly connected to one end of the translation slide, and the other end of the translation slide is fixedly connected to the guide slide; the guide slide is arranged on the inner plate body of the rear side plate of the box body, and the guide slide is located in the guide slide, and the guide slide has only linear sliding freedom relative to the guide slide; the powder discharge nozzle is fixedly installed on the translation slide.

[0011] The number of the powder discharge nozzles is several, and the several powder discharge nozzles are evenly distributed along the length direction of the translation slide.

[0012] There are two sets of assemblies consisting of the translation slide rod, guide slide seat, translation slide plate and guide slide block. The two sets of assemblies are distributed in left and right mirror symmetry relative to the nozzle translation drive motor. A reset tension spring is connected between the translation slide plates of the two sets of assemblies.

[0013] The dust removal mechanism includes an air suction pump, a dust collecting box, a bag dust collector, a dust suction pipe, a nut slider, a screw rod, a guide rod, a dust removal motor, a dust removal brush and a filter; the filter is fixedly mounted on the outside of the heat dissipation port; the nut slider is provided with a dust suction chamber; the air suction pump and the dust collecting box are fixedly mounted on the outside of the left side plate of the box body, and the air outlet of the air suction pump is connected to the atmosphere; the bag dust collector is arranged inside the dust collecting box, and the air outlet of the bag dust collector is connected to the air inlet of the air suction pump; the pipe opening at one end of the dust suction pipe is connected to the air inlet of the bag dust collector, and the pipe opening at the other end of the dust suction pipe is connected to the dust suction chamber of the nut slider; a dust suction chamber is fixedly mounted on the outside of the left side plate of the box body in the circumferential direction of the filter. An adapter frame is fixedly installed, and the screw rod and guide rod are arranged in parallel on the adapter frame; one end of the screw rod is rotatably connected to the adapter frame, and the other end of the screw rod is coaxially fixedly connected to the motor shaft of the dust removal motor. The dust removal motor is fixedly installed on the adapter frame, and a protective cover is arranged on the outside of the dust removal motor; both ends of the guide rod are fixedly connected to the adapter frame; the nut end of the nut slider is connected to the screw rod, and the slider end of the nut slider is connected to the guide rod, and the nut slider has only linear translation freedom relative to the guide rod; the dust removal brush is arranged in the dust suction chamber of the nut slider, and the dust removal brush cooperates with the filter brush; the dust collecting box adopts a side-opening door structure, and the dust collecting box is equipped with a snap-on door lock.

[0014] A dust removal timer is arranged inside the box.

[0015] Beneficial effects of the present invention:

[0016] The multifunctional electrical engineering instrument protection box of the present invention is additionally provided with an anti-collision function, which can effectively improve the ability of the protection box to resist external force impact, and reduce the probability of damage to electrical instruments and equipment under external force impact; it is additionally provided with a fire extinguishing function, and once a fire is triggered inside the protection box due to high temperature, short circuit, etc., automatic fire extinguishing can be implemented inside the protection box at the first time, and the open flame can be extinguished in the shortest time, thereby blocking the damage of the fire to the electrical engineering instruments and equipment; it is additionally provided with a dust removal function, which can dynamically remove dust accumulated at the heat dissipation port, avoid the heat dissipation effect being deteriorated due to the blockage of the heat dissipation port due to dust accumulation, and reduce the probability of fire being triggered by high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a multifunctional electrical engineering instrument protection box of the present invention;

[0018] Figure 2 It is a structural schematic diagram of a multifunctional electrical engineering instrument protection box of the present invention (cross-section view 1);

[0019] Figure 3 It is a structural schematic diagram of a multifunctional electrical engineering instrument protection box of the present invention (second cross-sectional view);

[0020] Figure 4It is a schematic structural diagram of the combination of the anti-collision mechanism and the box body (partial cross-section) of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the fire extinguishing mechanism of the present invention (the air pump and the dry powder fire extinguishing agent storage tank are not shown);

[0022] Figure 6 It is a structural schematic diagram of the dust removal mechanism (filter screen not shown) of the present invention (viewing angle 1);

[0023] Figure 7 It is a structural schematic diagram of the dust removal mechanism of the present invention (the dust removal motor, dust collection box, dust suction pipe and filter are not shown) (viewing angle 2);

[0024] In the figure, 1 is a box body, 2 is a box door, 3 is an observation window, 4 is an electrical engineering instrument, 5 is a heat dissipation port, 6 is a support plate, 7 is a buffer spring, 8 is an energy absorbing damper, 9 is a protective plate, 10 is an air pump, 11 is a dry powder fire extinguishing agent storage tank, 12 is a powder outlet pipe, 13 is a powder outlet nozzle, 14 is a dry powder fire extinguishing agent filling port, 15 is a cover, 16 is a nozzle translation drive motor, 17 is a motor bracket, 18 is a drive disk, 19 is a drive cam block, and 20 is a translation slide rod. , 21—guide slide, 22—translation slide, 23—guide slide, 24—guide slide, 25—air suction pump, 26—dust collection box, 27—dust suction pipe, 28—screw slider, 29—screw rod, 30—guide rod, 31—dust removal motor, 32—dust removal brush, 33—filter, 34—adapter, 35—protective cover, 36—snap-on door lock, 37—smoke sensor, 38—cooling fan, 39—dust removal timer, 40—electromagnetic switch valve. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1 to 7 As shown, a multifunctional electrical engineering instrument protection box includes a box body 1, a box door 2, an anti-collision mechanism, a fire extinguishing mechanism and a dust removal mechanism; the top plate, left side plate, right side plate and rear side plate of the box body 1 are double-layer structures, the bottom plate and front side plate of the box body 1 are single-layer structures, the box door 2 is arranged on the front side plate of the box body 1, and an observation window 3 is arranged on the box door 2, the electrical engineering instrument 4 is located inside the box body 1, and the electrical engineering instrument 4 is fixedly connected to the bottom plate of the box body 1; the anti-collision mechanism is located between the double-layer plate bodies of the top plate, left side plate, right side plate and rear side plate of the box body 1; the fire extinguishing mechanism is located above the electrical engineering instrument 4; the dust removal mechanism is located outside the heat dissipation port 5 of the box body 1.

[0027] The anti-collision mechanism includes a support plate 6, a buffer spring 7, an energy absorbing damper 8 and a protective plate 9; the support plate 6 is fixedly connected to the inner plate body of the top plate, the left plate, the right plate and the rear plate of the box body 1; the protective plate 9 is located on the outside of the support plate 6, and the protective plate 9 is distributed parallel to the support plate 6; the buffer spring 7 is located in the gap between the protective plate 9 and the support plate 6, and the two ends of the buffer spring 7 are respectively fixedly connected to the protective plate 9 and the support plate 6, and the buffer spring 7 is vertically distributed to the protective plate 9 and the support plate 6; the energy absorbing damper 8 is located in the gap between the protective plate 9 and the support plate 6, the buffer spring 7 is sleeved on the outside of the energy absorbing damper 8, and the two ends of the energy absorbing damper 8 are respectively fixedly connected to the protective plate 9 and the support plate 6, and the energy absorbing damper 8 is vertically distributed to the protective plate 9 and the support plate 6.

[0028] The buffer springs 7 and energy absorbing dampers 8 are of a plurality and the same number, and the plurality of buffer springs 7 and energy absorbing dampers 8 are evenly distributed in the gap between the protective plate 9 and the supporting plate 6 .

[0029] The fire extinguishing mechanism includes an air pump 10, a dry powder fire extinguishing agent storage tank 11, a powder discharge pipe 12 and a powder discharge nozzle 13; the air pump 10 and the dry powder fire extinguishing agent storage tank 11 are fixedly arranged on the top of the box body 1, the air inlet of the air pump 10 is connected to the atmosphere, the air outlet of the air pump 10 is connected to the air inlet of the dry powder fire extinguishing agent storage tank 11, the powder outlet of the dry powder fire extinguishing agent storage tank 11 is connected to the powder inlet of the powder discharge pipe 12, and the powder discharge nozzle 13 is connected to the powder discharge pipe 12. 3 is installed at the powder outlet of the powder outlet pipe 12; the powder outlet nozzle 13 is located in the gap between the top plate of the box body 1 and the electrical engineering instrument 4, and a nozzle translation driving assembly is arranged between the powder outlet nozzle 13 and the box body 1; a dry powder fire extinguishing agent filling port 14 is arranged on the top of the dry powder fire extinguishing agent storage tank 11, and a cover 15 is installed at the dry powder fire extinguishing agent filling port 14; an electromagnetic switch valve 40 is arranged at the powder inlet of the powder outlet pipe 12.

[0030] A smoke sensor 37 and a cooling fan 38 are arranged inside the box 1 .

[0031] The nozzle translation drive assembly includes a nozzle translation drive motor 16, a motor bracket 17, a drive disk 18, a drive cam block 19, a translation slide rod 20, a guide slide 21, a translation slide plate 22, a guide slide block 23 and a guide slide groove 24; the motor bracket 17 is fixedly installed between the top plate of the box body 1 and the electrical engineering instrument 4; the nozzle translation drive motor 16 is horizontally fixed on the motor bracket 17, the motor shaft of the nozzle translation drive motor 16 is fixedly connected to the center of the drive disk 18, and the drive disk 18 is vertically distributed with the motor shaft of the nozzle translation drive motor 16; the drive cam block 19 is fixedly arranged on the disk surface of the drive disk 18, and the center of the drive cam block 19 coincides with the center of the drive disk 18; the guide slide 21 It is fixedly connected to the motor bracket 17; the translation slide rod 20 is installed on the guide slide seat 21, and the translation slide rod 20 has only axial translation freedom relative to the guide slide seat 21; one end of the translation slide rod 20 is in contact with the driving cam block 19, and the surface of the translation slide rod 20 in contact with the driving cam block 19 is a spherical surface; the other end of the translation slide rod 20 is fixedly connected to one end of the translation slide plate 22, and the other end of the translation slide plate 22 is fixedly connected to the guide slide block 23; the guide slide groove 24 is arranged on the inner layer plate body of the rear side plate of the box body 1, and the guide slide block 23 is located in the guide slide groove 24, and the guide slide block 23 has only linear sliding freedom relative to the guide slide groove 24; the powder discharge nozzle 13 is fixedly installed on the translation slide plate 22.

[0032] There are a plurality of powder discharge nozzles 13 , and the plurality of powder discharge nozzles 13 are evenly distributed along the length direction of the translation slide 22 .

[0033] There are two sets of assemblies consisting of the translation slide rod 20, the guide slide seat 21, the translation slide plate 22 and the guide slide block 23. The two sets of assemblies are distributed in a mirror-symmetrical manner relative to the nozzle translation drive motor 16. A reset tension spring is connected between the translation slide plates 22 of the two sets of assemblies.

[0034] The dust removal mechanism includes an air suction pump 25, a dust collecting box 26, a bag dust collector, a dust suction pipe 27, a nut slider 28, a screw rod 29, a guide rod 30, a dust removal motor 31, a dust removal brush 32 and a filter 33; the filter 33 is fixedly mounted on the outside of the heat dissipation port 5; the nut slider 28 is provided with a dust suction chamber; the air suction pump 25 and the dust collecting box 26 are fixedly mounted on the outside of the left side plate of the box body 1, and the air outlet of the air suction pump 25 is connected to the atmosphere; the bag dust collector is arranged inside the dust collecting box 26, and the air outlet of the bag dust collector is connected to the air inlet of the air suction pump 25; one end of the dust suction pipe 27 is connected to the air inlet of the bag dust collector, and the other end of the dust suction pipe 27 is connected to the dust suction chamber of the nut slider 28; a rotary rotary device is fixedly mounted on the outside of the left side plate of the box body 1 in the circumferential direction of the filter 33. The connecting frame 34, the screw rod 29 and the guide rod 30 are arranged in parallel on the adapter frame 34; one end of the screw rod 29 is rotatably connected to the adapter frame 34, and the other end of the screw rod 29 is coaxially fixedly connected to the motor shaft of the dust removal motor 31, the dust removal motor 31 is fixedly mounted on the adapter frame 34, and a protective cover 35 is arranged on the outside of the dust removal motor 31; both ends of the guide rod 30 are fixedly connected to the adapter frame 34; the nut end of the nut slider 28 is connected to the screw rod 29, and the slider end of the nut slider 28 is connected to the guide rod 30, and the nut slider 28 has only a linear translational degree of freedom relative to the guide rod 30; the dust removal plate brush 32 is arranged in the dust suction chamber of the nut slider 28, and the dust removal plate brush 32 cooperates with the filter screen 33 to sweep; the dust collecting box 26 adopts a side-opening door structure, and the dust collecting box 26 is equipped with a snap-on door lock 36.

[0035] A dust removal timer 39 is arranged inside the housing 1 .

[0036] The following describes a one-time use process of the present invention in conjunction with the accompanying drawings:

[0037] During the operation of the electrical engineering instrument 4, the cooling fan 38 is in a normally open state, and the electrical engineering instrument 4 and the like inside the housing 1 are cooled by air through the cooling fan 38, and the heat dissipation port 5 is used to discharge hot air to the outside.

[0038] If the protection box encounters an external impact, the outer plate of the box body 1 will deform first, and then the deformed outer plate of the box body 1 will first impact the protective plate 9 of the anti-collision mechanism, and the protective plate 9 will be forced to move closer to the support plate 6. During this process, the buffer spring 7 and the energy absorption damper 8 will synchronously compress and absorb energy, absorbing the impact force transmitted by the protective plate 9, thereby ensuring the integrity of the inner plate of the box body 1, and ultimately ensuring that the electrical engineering instruments 4 inside the box body 1 are not damaged.

[0039] If the smoke sensor 37 detects smoke inside the box 1, it means that a fire has occurred inside the box 1. At this time, the air pump 10 is started, the electromagnetic switch valve 40 is opened, and the air pump 10 will pump external air into the dry powder fire extinguishing agent storage tank 11. Under the action of positive pressure, the dry powder fire extinguishing agent in the dry powder fire extinguishing agent storage tank 11 will be sprayed into the box 1 through the electromagnetic switch valve 40, the powder outlet pipe 12 and the powder outlet nozzle 13 in sequence to directly extinguish the fire.

[0040] In the process of the powder discharge nozzle 13 spraying the dry powder fire extinguishing agent downward, the nozzle translation drive motor 16 is synchronously started to drive the drive disk 18 to rotate, and the drive cam block 19 will rotate synchronously with the drive disk 18. In the process of the drive cam block 19 rotating, when the spherical end of the translation slide rod 20 slides from the small diameter end of the drive cam block 19 to the large diameter end, the translation slide rod 20 will translate outward along the guide slide seat 21, and the guide slide block 23 will follow the slide of the guide groove 24, thereby driving the translation slide plate 22 and its The upper powder nozzle 13 is synchronously translated outward to expand the spraying range of the dry powder fire extinguishing agent. At the same time, the reset spring between the two translation slides 22 is stretched and the spring force is accumulated. When the spherical end of the translation slide bar 20 passes over the large diameter end of the driving cam block 19, the reset spring between the two translation slides 22 releases the spring force, which will pull the two translation slides 22 closer together again. At the same time, the spherical end of the translation slide bar 20 will slide from the large diameter end to the small diameter end of the driving cam block 19. At this time, the driving disk 18 just rotates one circle. With the continuous rotation of the driving disk 18, the two translation slides 22 can be alternately moved back and forth between moving away and moving closer, thereby realizing a large-scale spraying of the dry powder fire extinguishing agent, so as to complete the automatic fire extinguishing operation in the shortest time.

[0041] In order to prevent the dust on the surface of the filter 33 from affecting the normal ventilation and heat dissipation of the heat dissipation port 5, the dust removal time can be set by the dust removal timer 39 during the operation of the electrical engineering instrument 4. When the dust removal start time set by the dust removal timer 39 arrives, the suction pump 25 and the dust removal motor 31 are started synchronously. When the suction pump 25 is started, under the action of suction, the dust collection chambers of the dust box 26, the dust suction pipe 27 and the nut slider 28 will form a negative pressure. When the dust removal motor 31 is started, it will drive the screw rod 29 to rotate, and the rotational motion of the screw rod 29 will be synchronously converted into the linear motion of the nut slider 28. As the nut slider 28 moves, the dust removal brush 32 will brush the dust on the surface of the filter 33, and the dust that is separated from the surface of the filter 33 after brushing will be sucked into the dust suction chamber of the nut slider 28 by the negative pressure, and then enter the bag dust collector inside the dust box 26 through the dust suction pipe 27. The dust will remain in the bag dust collector, and the purified air will be discharged into the atmosphere through the air suction pump 25. After the dust on the surface of the filter 33 is removed, the ventilation and heat dissipation effect of the heat dissipation port 5 is effectively guaranteed. When the dust removal end time set by the dust removal timer 39 arrives, the air suction pump 25 and the dust removal motor 31 are synchronously turned off until the next dust removal start time set by the dust removal timer 39 arrives and then restarted.

[0042] The solutions in the embodiments are not intended to limit the protection scope of the present invention. All equivalent implementations or changes that do not deviate from the present invention are included in the protection scope of the present invention.

Claims

1. A multifunctional electrical engineering instrument protection box, characterized in that: It includes a box body, a box door, an anti-collision mechanism, a fire extinguishing mechanism and a dust removal mechanism; the top plate, left plate, right plate and rear plate of the box body are double-layer structures, the bottom plate and front plate of the box body are single-layer structures, the box door is arranged on the front plate of the box body, and an observation window is arranged on the box door, the electrical engineering instruments are located inside the box body, and the electrical engineering instruments are fixedly connected to the bottom plate of the box body; the anti-collision mechanism is located between the double-layer plates of the top plate, left plate, right plate and rear plate of the box body; the fire extinguishing mechanism is located above the electrical engineering instruments; the dust removal mechanism is located outside the heat dissipation port of the box body.

2. A multifunctional electrical engineering instrument protection box according to claim 1, characterized in that: The anti-collision mechanism includes a support plate, a buffer spring, an energy-absorbing damper and a protective plate; the support plate is fixedly connected to the inner plate body of the top plate, the left plate, the right plate and the rear plate of the box body; the protective plate is located on the outside of the support plate, and the protective plate is distributed parallel to the support plate; the buffer spring is located in the gap between the protective plate and the support plate, and the two ends of the buffer spring are respectively fixedly connected to the protective plate and the support plate, and the buffer spring is vertically distributed to the protective plate and the support plate; the energy-absorbing damper is located in the gap between the protective plate and the support plate, and the buffer spring is sleeved on the outside of the energy-absorbing damper, and the two ends of the energy-absorbing damper are respectively fixedly connected to the protective plate and the support plate, and the energy-absorbing damper is vertically distributed to the protective plate and the support plate.

3. A multifunctional electrical engineering instrument protection box according to claim 2, characterized in that: The buffer springs and energy absorbing dampers are of a plurality and the number is the same, and the plurality of buffer springs and energy absorbing dampers are evenly distributed in the gap between the protective plate and the supporting plate.

4. The multifunctional electrical engineering instrument protection box according to claim 1, characterized in that: The fire extinguishing mechanism comprises an air pump, a dry powder fire extinguishing agent storage tank, a powder discharge pipe and a powder discharge nozzle; the air pump and the dry powder fire extinguishing agent storage tank are fixedly arranged on the top of the box body, the air inlet of the air pump is connected to the atmosphere, the air outlet of the air pump is connected to the air inlet of the dry powder fire extinguishing agent storage tank, the powder outlet of the dry powder fire extinguishing agent storage tank is connected to the powder inlet of the powder discharge nozzle, and the powder discharge nozzle is installed at the powder outlet of the powder discharge nozzle; the powder discharge nozzle is located in the gap between the top plate of the box body and the electrical engineering instrument, and a nozzle translation drive assembly is arranged between the powder discharge nozzle and the box body; a dry powder fire extinguishing agent filling port is arranged on the top of the dry powder fire extinguishing agent storage tank, and a cover is installed on the dry powder fire extinguishing agent filling port; an electromagnetic switch valve is arranged at the powder inlet of the powder discharge pipe.

5. The multifunctional electrical engineering instrument protection box according to claim 1, characterized in that: A smoke sensor and a cooling fan are arranged inside the box.

6. The multifunctional electrical engineering instrument protection box according to claim 4, characterized in that: The nozzle translation drive assembly includes a nozzle translation drive motor, a motor bracket, a drive disk, a drive cam block, a translation slide rod, a guide slide, a translation slide plate, a guide slide block and a guide slide groove; the motor bracket is fixedly installed between the top plate of the box body and the electrical engineering instrument; the nozzle translation drive motor is horizontally fixed on the motor bracket, the motor shaft of the nozzle translation drive motor is fixedly connected to the center of the drive disk, and the drive disk and the motor shaft of the nozzle translation drive motor are vertically distributed; the drive cam block is fixedly arranged on the disk surface of the drive disk, and the center of the drive cam block coincides with the center of the drive disk; the guide slide is fixed The guide slide is connected to the motor bracket; the translation slide is installed on the guide slide, and the translation slide has only axial translation freedom relative to the guide slide; one end of the translation slide is in contact with the driving cam block, and the surface of the translation slide in contact with the driving cam block is a spherical surface; the other end of the translation slide is fixedly connected to one end of the translation slide, and the other end of the translation slide is fixedly connected to the guide slide; the guide slide is arranged on the inner plate body of the rear side plate of the box body, and the guide slide is located in the guide slide, and the guide slide has only linear sliding freedom relative to the guide slide; the powder discharge nozzle is fixedly installed on the translation slide.

7. The multifunctional electrical engineering instrument protection box according to claim 6, characterized in that: The number of the powder discharge nozzles is several, and the several powder discharge nozzles are evenly distributed along the length direction of the translation slide.

8. The multifunctional electrical engineering instrument protection box according to claim 6, characterized in that: There are two sets of assemblies consisting of the translation slide rod, guide slide seat, translation slide plate and guide slide block. The two sets of assemblies are distributed in left and right mirror symmetry relative to the nozzle translation drive motor. A reset tension spring is connected between the translation slide plates of the two sets of assemblies.

9. The multifunctional electrical engineering instrument protection box according to claim 1, characterized in that: The dust removal mechanism includes an air suction pump, a dust collecting box, a bag dust collector, a dust suction pipe, a nut slider, a screw rod, a guide rod, a dust removal motor, a dust removal brush and a filter; the filter is fixedly mounted on the outside of the heat dissipation port; the nut slider is provided with a dust suction chamber; the air suction pump and the dust collecting box are fixedly mounted on the outside of the left side plate of the box body, and the air outlet of the air suction pump is connected to the atmosphere; the bag dust collector is arranged inside the dust collecting box, and the air outlet of the bag dust collector is connected to the air inlet of the air suction pump; the pipe opening at one end of the dust suction pipe is connected to the air inlet of the bag dust collector, and the pipe opening at the other end of the dust suction pipe is connected to the dust suction chamber of the nut slider; a dust suction chamber is fixedly mounted on the outside of the left side plate of the box body in the circumferential direction of the filter. An adapter frame is fixedly installed, and the screw rod and guide rod are arranged in parallel on the adapter frame; one end of the screw rod is rotatably connected to the adapter frame, and the other end of the screw rod is coaxially fixedly connected to the motor shaft of the dust removal motor. The dust removal motor is fixedly installed on the adapter frame, and a protective cover is arranged on the outside of the dust removal motor; both ends of the guide rod are fixedly connected to the adapter frame; the nut end of the nut slider is connected to the screw rod, and the slider end of the nut slider is connected to the guide rod, and the nut slider has only linear translation freedom relative to the guide rod; the dust removal brush is arranged in the dust suction chamber of the nut slider, and the dust removal brush cooperates with the filter brush; the dust collecting box adopts a side-opening door structure, and the dust collecting box is equipped with a snap-on door lock.

10. The multifunctional electrical engineering instrument protection box according to claim 1, characterized in that: A dust removal timer is arranged inside the box.

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