Power distribution cabinet

Abstract

A power distribution cabinet disclosed by the present invention comprises a cabinet body, an air blowing mechanism for cooling the interior of the cabinet body is arranged on the cabinet body, the air blowing mechanism comprises a rectangular shell which is penetrated and fixedly connected to one side of the cabinet body, and a fixed rod is fixedly connected to the inner wall of one end, close to the cabinet body, of the rectangular shell. A cylindrical shell penetrates through the fixing rod and is rotationally connected with the fixing rod through a fixed shaft, fan blades for blowing air into the cabinet body are rotationally connected to the symmetrical positions of the two sides of the end, away from the fixing rod, of the cylindrical shell in a penetrating mode, and an outer gear ring is fixedly connected to the outer contour of the end, close to the fixing rod, of the cylindrical shell; one side, close to the outer gear ring, of the fixing rod is penetrated and is rotatably connected with a transmission gear driven by a power mechanism to rotate through a fixed shaft, an adjusting mechanism for automatically adjusting the air supply amount of the fan blades according to the internal temperature of the cabinet body is arranged on the cylindrical shell, the air supply amount is automatically adjusted according to the internal temperature of the power distribution cabinet, and the heat dissipation effect is improved.

Description

Technical Field

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

[0002] The power distribution cabinet is an electrical equipment, which is used for power distribution, control, metering and cable connection in the power supply system. Generally, power supply bureaus and substations use high-voltage switch cabinets, which are then stepped down by transformers and led to low-voltage distribution cabinets. The low-voltage distribution cabinets are then used to connect to the distribution boards, control boxes and switch boxes of various power users. The equipment is a power distribution device that meets the design functional requirements by assembling some switches, circuit breakers, fuses, buttons, indicator lights, meters, wires and other protective devices into one.

[0003] The existing Chinese patent with publication number CN117097075A includes a distribution cabinet body, an upper fixed partition is horizontally fixed to the upper end of the interior of the distribution cabinet body, a second fixed bracket is horizontally fixed to the lower end of the interior of the distribution cabinet body, a vertical partition is fixed in the middle between the upper fixed partition and the second fixed bracket inside the distribution cabinet body, a side action cavity is formed inside the distribution cabinet body along one side of the vertical partition, a first connecting gear is installed at the upper end of the outer side of the side action cavity, a side fixed end is connected to the outer side of the distribution cabinet body along the outer side of the first connecting gear, the side fixed end is coaxially connected to the first connecting gear, and a power generation rotating blade is fixed to the outside of the side fixed end.

[0004] When the above device is in use, the air flow drives the power generation rotating blades to rotate, thereby driving the first connecting gear to rotate, and the third speed gear is driven to rotate through the meshing connection relationship between the first connecting gear and the first speed gear, the coaxial connection relationship between the first speed gear and the second connecting gear, the meshing connection relationship between the second connecting gear and the second speed gear, the coaxial connection relationship between the second speed gear and the third connecting gear, and the meshing connection relationship between the third connecting gear and the third speed gear. The generator converts mechanical energy into electrical energy and stores it in the battery through the connecting line. However, in actual use, the fan in the above-mentioned comparative document is driven to rotate by the natural wind speed in the external environment to dissipate heat, and the internal temperature of the distribution cabinet will gradually increase when the distribution cabinet starts to work. When the natural wind speed in the external environment is low, the heat dissipation effect inside the distribution cabinet is affected. Therefore, it is difficult to automatically adjust the air supply of the fan according to the internal temperature of the distribution cabinet.

[0005] For this purpose, we propose a power distribution cabinet. Summary of the invention

[0006] The object of the present invention is to provide a power distribution cabinet, which has the advantage of automatically adjusting the air supply volume according to the height inside the power distribution cabinet, and solves the problems in the background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a power distribution cabinet, comprising a cabinet body, wherein the cabinet body is provided with a blower mechanism for cooling the interior of the cabinet body; The blowing mechanism includes a rectangular shell that is penetrated and fixedly connected on one side of the cabinet, a fixing rod is fixedly connected to the inner wall of the rectangular shell near one end of the cabinet, a cylindrical shell is penetrated through the fixing rod and is rotatably connected to it, fan blades for blowing air into the cabinet are penetrated and rotatably connected at both sides of the cylindrical shell away from one end of the fixing rod, and an outer gear ring is fixedly connected to the outer contour of the cylindrical shell near one end of the fixing rod, a transmission gear that is transmission-connected to the rotor on the generator is penetrated on one side of the fixing rod near the outer gear ring and is rotatably connected to it, and the transmission gear is meshed with the teeth on the outer gear ring, and the cylindrical shell is provided with an adjusting mechanism that automatically adjusts the air supply of the fan blades according to the temperature inside the cabinet.

[0008] Preferably, the adjustment mechanism includes a cylindrical shell having an inner wall near one end of the fan blade fixedly connected to a piston rod, a cylindrical shell for axial reciprocating movement is sleeved on the outer contour of the piston rod away from the fan blade, and the inner wall of the cylindrical shell away from the piston rod is provided with alcohol that is easily expanded by heat, and the cylindrical shell is in contact with the inner wall of the cylindrical shell and is movably connected.

[0009] Preferably, the opposite ends of the two blades are coaxially fixedly connected with a first gear, and the opposite sides of the two first gears are respectively meshingly connected with tooth plates, and the two tooth plates are fixedly connected to an adjacent end of the cylindrical shell.

[0010] Preferably, a support rod is fixedly connected to the interior of the rectangular shell away from one end of the fixing rod, and filters for filtering dust in the air are fixedly connected to the surfaces of both sides of the support rod opposite to the rectangular shell; The rectangular shell has limit grooves at symmetrical positions on both sides near one end of the support rod, and baffles for shielding the filter are movably connected at symmetrical positions on both sides of the inner walls of the two limit grooves. The rectangular shell is provided with an auxiliary mechanism for controlling the air intake of the filter.

[0011] Preferably, the auxiliary mechanism includes a rectangular plate fixedly connected to the inner wall of a rectangular shell, an inner gear ring penetrated through and rotatably connected to the rectangular plate, push rods for pulling the baffles on both sides to move back and forth toward or away from each other are rotatably connected at symmetrical positions on both sides of the inner gear ring near one end of the filter screen through pins, and the end of the push rod away from the inner gear ring is respectively rotatably connected to the adjacent baffle plates through pins, an arc-shaped rack is fixedly connected to the outer contour of the end of the inner gear ring away from the push rod, and an L-shaped rod is fixedly connected to one end of the rectangular plate near the arc-shaped rack, and a second gear is penetrated through and rotatably connected to the L-shaped rod near the end to mesh with the arc-shaped rack for transmission.

[0012] Preferably, the end of the L-shaped rod away from the second gear is penetrated by and rotatably connected with an inner screw sleeve, the inner wall of the inner screw sleeve is threaded with an outer screw sleeve, and the outer screw sleeve is penetrated by and rotatably connected with a cylindrical shell, the end of the outer screw sleeve away from the L-shaped rod is fixedly connected to a limit rod for supporting the outer screw sleeve, and the end of the limit rod away from the outer screw sleeve passes through the L-shaped rod and is movably connected, the end of the second gear close to the L-shaped rod is coaxially rotatably connected to the first pulley, and the second pulley is fixedly connected to the outer contour of the inner screw sleeve at a position corresponding to the first pulley, and the outer contours of the second pulley and the first pulley are provided with a transmission belt that drives the second gear to perform fixed-axis reciprocating rotation.

[0013] Preferably, a rectangular through groove is provided on the support rod, and the inner wall of the rectangular through groove on the side of the support rod close to the baffle is movably connected to a rectangular frame that can move back and forth horizontally, and the side of the rectangular frame away from the push rod is fixedly connected to a cross-shaped scraper for cleaning dust on the surface of the filter, and the rectangular frame is provided with a cleaning mechanism for driving the cross-shaped scraper to scrape dust on the surface of the filter back and forth.

[0014] Preferably, the cleaning mechanism includes a rectangular frame whose inner wall is movably connected to a slider for lifting and reciprocating movement, the slider is rotatably connected to a connecting rod via a pin, the end of the connecting rod away from the slider is coaxially fixed with a third gear that drives the rectangular frame and the cross-shaped scraper to reciprocate horizontally, and the third gear is meshed with the inner gear ring for transmission.

[0015] Preferably, a rotating rod is fixedly connected to the outer contour of one end of the cylindrical shell away from the tubular shell, and one end of the rotating rod away from the cylindrical shell is fixedly connected to a cylindrical rod, and the connecting rod and the third gear are penetrated by the cylindrical rod and movably connected.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Alcohol that is easily expanded by heat is provided on the inner wall of the cylindrical shell away from the end of the piston rod. As the temperature inside the cabinet gradually increases, the alcohol inside the cylindrical shell expands due to the heat. At this time, the internal air pressure of the cylindrical shell away from the end of the piston rod is positive pressure, so that the cylindrical shell can move axially in the direction away from the piston rod. Through the first gear arranged on the fan blade and the tooth plate arranged on the cylindrical shell, the first gear and the teeth on the tooth plate are meshed with each other. As the cylindrical shell moves axially in the direction away from the piston rod, the two tooth plates drive the first gear to rotate in opposite directions under the action of the cylindrical shell, and then the fan blades are synchronously rotated and adjusted in opposite directions under the action of the first gear, thereby increasing the angle between the fan blades and the rotating plane, thereby increasing the thrust of the fan blades on the air when rotating, further increasing the air supply of the fan blades to the inside of the cabinet, and improving the heat dissipation effect inside the cabinet.

[0017] Second, as the cylindrical housing moves axially in a direction away from the piston rod, the outer screw sleeve is synchronously moved horizontally in a direction close to the L-shaped rod under the action of the limit rod. As the outer screw sleeve is threadedly connected to the inner screw sleeve, the inner screw sleeve can be rotated on the L-shaped rod on a fixed axis under the action of the outer screw sleeve. Through the second gear and the first pulley and the second pulley arranged on the inner screw sleeve, and the transmission belt arranged on the first pulley and the second pulley, the second pulley can drive the first pulley and the second gear to rotate synchronously on a fixed axis under the action of the transmission belt, and at the same time At this time, the arc-shaped rack drives the inner gear ring to rotate in the C direction under the action of the second gear. At this time, the push rod pushes the push rods on both sides to move horizontally in opposite directions under the rotation of the inner gear ring, reducing the coverage area of ​​the baffle on the filter. Therefore, the baffle can synchronously expand the ventilation volume of the filter with the increase of the air supply of the fan blades, thereby reducing the blocking area of ​​the baffle on the filter plate as the air supply increases, thereby improving the filtration efficiency. Otherwise, the blocking area is increased, reducing the dust adhesion on the filter plate, and effectively solving the problems of poor ventilation and maintenance difficulties caused by dust clogging the filter.

[0018] 3. As the inner gear ring rotates toward the C direction, the rotation of the inner gear ring changes the rotation speed of the third gear. At the same time, the third gear changes the angle of the connecting rod under the action of the inner gear ring. At this time, the rotation of the connecting rod can drive the rectangular frame to move horizontally back and forth along the inner wall of the rectangular through groove, so that the cross-shaped scraper moves back and forth under the action of the rectangular frame to scrape and clean the dust attached to the surface of the filter. At the same time, the greater the angle of the inner gear ring rotating toward the C direction, the smaller the blocking area of ​​the baffle plate on the filter, which can increase the horizontal reciprocating movement range of the rectangular frame, increase the dust cleaning area of ​​the filter surface by the cross-shaped scraper, and further maintain the cleanliness of the filter plate and the ventilation efficiency.

[0019] The coordinated use of the above structure solves the problem that the existing device is difficult to automatically adjust the air supply of the fan according to the internal temperature of the distribution cabinet during actual use, and it is easy to accelerate the adhesion of dust in the external air to the filter screen to cause blockage, thereby affecting the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a cross-sectional schematic diagram of the three-dimensional structure of a rectangular shell of the present invention; Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the cylindrical shell of the present invention; Figure 4 For the present invention Figure 2 Schematic diagram of the structure at A in the middle; Figure 5 For the present invention Figure 2 Schematic diagram of the structure at B in the middle; Figure 6 It is a cross-sectional schematic diagram of the three-dimensional structure of a rectangular plate of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the rectangular frame of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the part where the inner screw sleeve of the present invention is located; Fig. 9 It is a cross-sectional schematic diagram of the three-dimensional structure of the support rod of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the part where the push rod of the present invention is located.

[0021] In the figure: 1, cabinet; 2, rectangular shell; 201, limit groove; 3, fixing rod; 4, cylindrical shell; 5, fan blade; 6, outer gear ring; 7, transmission gear; 8, cylindrical shell; 9, piston rod; 10, first gear; 11, tooth plate; 12, support rod; 121, rectangular through groove; 13, filter screen; 14, baffle; 15, rectangular plate; 16, inner gear ring; 17, push rod; 18, arc rack; 19, L-shaped rod; 20, second gear; 21, first pulley; 22, inner screw sleeve; 23, second pulley; 24, transmission belt; 25, outer screw sleeve; 26, limit rod; 27, rectangular frame; 28, cross scraper; 29, slider; 30, connecting rod; 31, third gear; 32, rotating rod; 33, cylindrical rod. DETAILED DESCRIPTION

[0022] 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.

[0023] Embodiment 1:

[0024] See also Figure 1 , Figure 2 , Figure 3 and Figure 6 , the present invention provides a technical solution: a power distribution cabinet, comprising a cabinet body 1, wherein the cabinet body 1 is provided with a blower mechanism for cooling the interior of the cabinet body 1; The air blowing mechanism includes a rectangular shell 2 that is penetrated and fixedly connected on one side of the cabinet 1, a fixed rod 3 is fixedly connected to the inner wall of the rectangular shell 2 near one end of the cabinet 1, a cylindrical shell 4 is penetrated and rotatably connected on the fixed rod 3, and the symmetrical positions on both sides of the cylindrical shell 4 away from the end of the fixed rod 3 are penetrated and rotatably connected with fan blades 5 for blowing air inside the cabinet 1, and an outer gear ring 6 is fixedly connected to the outer contour of the cylindrical shell 4 near one end of the fixed rod 3, and a transmission gear 7 that is connected to the rotor on the generator is penetrated and rotatably connected on one side of the fixed rod 3 near the outer gear ring 6, and the transmission gear 7 is meshed with the teeth on the outer gear ring 6, and the cylindrical shell 4 is provided with an adjustment mechanism that automatically adjusts the air supply volume of the fan blades 5 according to the internal temperature of the cabinet 1. The generator in this scheme is the generator in the referenced comparative document, that is, the scheme is further improved based on the reference document, wherein the orientation setting of the air blowing mechanism in this scheme can be adaptively adjusted according to actual use requirements.

[0025] The above-mentioned cabinet 1 is a distribution cabinet. However, during long-term operation, the distribution cabinet will generate a large amount of heat due to the heat loss of internal electronic components, causing the internal temperature to rise. If the heat dissipation is not timely, it will not only reduce the equipment operation efficiency, but may also cause equipment failure or even safety accidents.

[0026] When in use, through the rectangular shell 2 set on the cabinet 1, the rectangular shell 2 is communicated with the inner wall of the cabinet 1 and fixedly connected, through the fixing rod 3 set on the rectangular shell 2 and the cylindrical shell 4 set on the fixing rod 3, the fixing rod 3 fixes and supports the cylindrical shell 4 on the rectangular shell 2, and at the same time, the cylindrical shell 4 is connected to the fixing rod 3 for fixed-axis rotation, through the outer gear ring 6 set on the cylindrical shell 4 and the transmission gear 7 set on the fixing rod 3, the transmission gear 7 can be meshed with the teeth on the outer gear ring 6, and the transmission gear 7 is driven by the generator rotor to rotate on a fixed axis, so that the outer gear ring 6 drives the cylindrical shell 4 to rotate on the fixing rod 3 synchronously under the action of the transmission gear 7, through the fan blades 5 set on the cylindrical shell 4, along with the cylindrical shell 4 rotating on a fixed axis, and then the fan blades 5 can blow external cold air to the inside of the cabinet 1 for cooling, and through the adjustment mechanism set on the cylindrical shell 4, the adjustment mechanism can automatically adjust the air supply volume of the fan blades 5 according to the temperature inside the cabinet 1.

[0027] Embodiment 2:

[0028] See also Figures 1 to 3 On the basis of the first embodiment, further: The adjustment mechanism includes a cylindrical shell 4 whose inner wall is close to the fan blade 5 and is fixedly connected to a piston rod 9, and a cylindrical shell 8 that can reciprocate axially is sleeved on the outer contour of the piston rod 9 at the end away from the fan blade 5, and the inner wall of the cylindrical shell 8 at the end away from the piston rod 9 is provided with alcohol that is easily expanded by heat, and the cylindrical shell 8 is in contact with the inner wall of the cylindrical shell 4 and is movably connected.

[0029] The opposite ends of the two blades 5 are coaxially fixedly connected with a first gear 10 , and the opposite sides of the two first gears 10 are respectively meshed and transmission-connected with tooth plates 11 , and the two tooth plates 11 are fixedly connected to the adjacent end of the cylindrical shell 8 .

[0030] When in use, the piston rod 9 is fixedly supported on the inner wall of the cylindrical shell 4 by the piston rod 9 provided on the cylindrical shell 4, and the cylindrical shell 8 provided on the piston rod 9 makes the cylindrical shell 8 and the piston rod 9 axially reciprocatingly connected, and at the same time, the cylindrical shell 8 and the piston rod 9 can synchronously rotate along with the cylindrical shell 4, and the inner wall of the cylindrical shell 8 away from the piston rod 9 is provided with alcohol that is easily expanded by heat. As the temperature inside the cabinet 1 gradually increases, the alcohol inside the cylindrical shell 8 expands due to heat. At this time, the internal air pressure of the cylindrical shell 8 away from the piston rod 9 is positive pressure, so that the cylindrical shell 8 can axially move in the direction away from the piston rod 9. The first gear 10 is arranged on the fan blade 5, and the tooth plate 11 is arranged on the cylindrical shell 8, so that the teeth on the first gear 10 and the tooth plate 11 are meshed with each other, and the cylindrical shell 8 moves axially in the direction away from the piston rod 9, so that the two tooth plates 11 drive the first gear 10 to rotate in the opposite directions under the action of the cylindrical shell 8, and then the fan blade 5 is synchronously rotated and adjusted in the opposite direction under the action of the first gear 10, which increases the angle between the fan blade 5 and the rotating plane, so that the thrust of the fan blade 5 on the air during rotation is increased, and the air supply of the fan blade 5 to the inside of the cabinet 1 is further increased, thereby improving the heat dissipation effect on the inside of the cabinet 1.

[0031] When the temperature inside the cabinet 1 gradually decreases, the above structure resets and moves in the opposite direction.

[0032] Embodiment three:

[0033] See also Figure 2 , Figure 4 and Figure 7 On the basis of the second embodiment, further: A support rod 12 is fixedly connected to the interior of the rectangular housing 2 at one end away from the fixing rod 3, and filters 13 for filtering dust in the air are fixedly connected to the surfaces of both sides of the support rod 12 opposite to the rectangular housing 2; The rectangular shell 2 is provided with limiting grooves 201 at symmetrical positions on both sides near one end of the support rod 12, and baffles 14 for shielding the filter 13 are movably connected at symmetrical positions on both sides of the inner walls of the two limiting grooves 201. The rectangular shell 2 is provided with an auxiliary mechanism for controlling the air intake of the filter 13.

[0034] When in use, through the support rod 12 set on the rectangular shell 2 and the filter 13 set on the support rod 12, the support rod 12 can fix the filter 13 on the inner wall of the rectangular shell 2. When the fan blades 5 blow external cold air into the cabinet 1 for cooling, the filter 13 can filter dust in the external air, thereby preventing dust from entering the cabinet 1 and causing damage to electrical components.

[0035] By opening a limit groove 201 on the rectangular shell 2 and setting a baffle 14 on the limit groove 201, the limit groove 201 can support and limit the moving direction of the baffle 14, and the auxiliary mechanism is set on the rectangular shell 2, so that the auxiliary mechanism can adjust the shielding area of ​​the baffle 14 on the filter 13 according to the size of the air supply of the fan blade 5.

[0036] Embodiment 4:

[0037] See also Figure 2 , Figure 5 , Figure 6 , Figure 8 and Fig.10 On the basis of the third embodiment, further: The auxiliary mechanism includes a rectangular plate 15 fixedly connected to the inner wall of a rectangular shell 2, an inner gear ring 16 penetrated through and rotatably connected to the rectangular plate 15, push rods 17 for pulling the baffles 14 on both sides to move back and forth toward or away from each other are rotatably connected at symmetrical positions on both sides of the inner gear ring 16 near one end of the filter screen 13 through pins, and the ends of the push rods 17 away from the inner gear ring 16 are respectively rotatably connected to the adjacent baffles 14 on one side through pins, an arc-shaped rack 18 is fixedly connected to the outer contour of the end of the inner gear ring 16 away from the push rod 17, and an L-shaped rod 19 is fixedly connected to one end of the rectangular plate 15 near the arc-shaped rack 18, and a second gear 20 meshing with the arc-shaped rack 18 is penetrated through and rotatably connected near the end on the L-shaped rod 19.

[0038] The end of the L-shaped rod 19 away from the second gear 20 is penetrated and rotatably connected with an inner screw sleeve 22, the inner wall of the inner screw sleeve 22 is screwed with an outer screw sleeve 25, and the outer screw sleeve 25 is penetrated and rotatably connected by the cylindrical housing 8, the end of the outer screw sleeve 25 away from the L-shaped rod 19 is fixedly connected to a limit rod 26 that supports the outer screw sleeve 25, and the end of the limit rod 26 away from the outer screw sleeve 25 penetrates the L-shaped rod 19 and is movably connected, the end of the second gear 20 close to the L-shaped rod 19 is coaxially rotatably connected with a first pulley 21, and a second pulley 23 is fixedly connected to the outer contour of the inner screw sleeve 22 at a position corresponding to the first pulley 21, and a transmission belt 24 that drives the second gear 20 to reciprocate on a fixed axis is sleeved on the outer contours of the second pulley 23 and the first pulley 21.

[0039] When in use, the rectangular plate 15 is fixedly supported on the inner wall of the rectangular shell 2 by the rectangular plate 15 provided on the rectangular shell 2, and the inner gear ring 16 is provided on the rectangular plate 15 so that the inner gear ring 16 is connected to the rectangular plate 15 for fixed-axis rotation. The push rod 17 is provided on the inner gear ring 16, and the two ends of the push rod 17 are rotatably connected with the baffle 14 and the inner gear ring 16, so that the push rod 17 can support the position of the baffle 14. The arc-shaped rack 18 is provided on the inner gear ring 16, and the second gear 20 is provided on the L-shaped rod 19, so that the L-shaped rod 19 can be rotated. 19 fixes and supports the second gear 20 on the rectangular plate 15, and the second gear 20 meshes with the teeth on the arc rack 18. Through the inner screw sleeve 22 set on the L-shaped rod 19 and the outer screw sleeve 25 set on the inner screw sleeve 22, the outer screw sleeve 25 penetrates the inner wall of the inner screw sleeve 22 and is screwed. Through the limit rod 26 set on the outer screw sleeve 25, the limit rod 26 can support the outer screw sleeve 25 on the L-shaped rod 19 and connect it horizontally reciprocatingly. At the same time, the outer screw sleeve 25 is sleeved on the outer contour of the cylindrical shell 8 and is connected to rotate on a fixed axis.

[0040] As the cylindrical housing 8 moves axially in a direction away from the piston rod 9, the outer screw sleeve 25 is synchronously moved horizontally in a direction close to the L-shaped rod 19 under the action of the limit rod 26. As the outer screw sleeve 25 is threadedly connected with the inner screw sleeve 22, the inner screw sleeve 22 can be rotated on the L-shaped rod 19 under the action of the outer screw sleeve 25. Through the first pulley 21 and the second pulley 23 provided on the second gear 20 and the inner screw sleeve 22, and the transmission belt 24 provided on the first pulley 21 and the second pulley 23, the second pulley 23 can drive the first pulley 21 and the second gear 20 to move synchronously under the action of the transmission belt 24. The inner gear ring 16 rotates along the fixed axis, and the arc-shaped rack 18 drives the inner gear ring 16 to rotate along the fixed axis in the direction C under the action of the second gear 20. At this time, the push rod 17 pushes the push rods 17 on both sides to move horizontally in opposite directions under the rotation of the inner gear ring 16, thereby reducing the coverage area of ​​the baffle 14 on the filter 13, so that the baffle 14 can synchronously expand the ventilation volume of the filter 13 with the increase of the air supply volume of the fan blade 5, thereby reducing the blocking area of ​​the baffle 14 on the filter plate as the air supply volume increases, thereby improving the filtration efficiency, and vice versa. The blocking area is increased, reducing the dust adhesion on the filter plate, and effectively solving the problems of poor ventilation and maintenance difficulties caused by dust clogging the filter 13.

[0041] Embodiment five:

[0042] See also Figure 2 , Figure 6 , Figure 7 and Fig. 9 On the basis of the fourth embodiment, further: A rectangular through slot 121 is provided on the support rod 12, and a rectangular frame 27 for horizontal reciprocating movement is movably connected to the inner wall of the rectangular through slot 121 on the side of the support rod 12 close to the baffle 14. A cross-shaped scraper 28 for cleaning dust on the surface of the filter 13 is fixedly connected to the side of the rectangular frame 27 away from the push rod 17, and a cleaning mechanism is provided on the rectangular frame 27 for driving the cross-shaped scraper 28 to reciprocately scrape dust on the surface of the filter 13.

[0043] When in use, through the rectangular through groove 121 opened on the support rod 12 and the rectangular frame 27 set on the rectangular through groove 121, the rectangular through groove 121 supports and limits the moving direction of the rectangular frame 27, and through the cross-shaped scraper 28 set on the rectangular frame 27, the longitudinal plate of the cross-shaped scraper 28 is fitted with the filter 13, and the transverse plate of the cross-shaped scraper 28 is fitted with the support rod 12, and the cleaning mechanism set on the rectangular frame 27 can drive the cross-shaped scraper 28 to move horizontally back and forth, and at the same time, the longitudinal plate of the cross-shaped scraper 28 can scrape and clean the dust attached to the surface of the filter 13, and the transverse plate of the cross-shaped scraper 28 is fitted with the support rod 12 to seal the rectangular through groove 121, so as to prevent dust in the air from entering the interior of the cabinet 1 through the rectangular through groove 121.

[0044] The cleaning mechanism includes a rectangular frame 27 whose inner wall is movably connected to a slider 29 for lifting and reciprocating movement, and a connecting rod 30 is rotatably connected to the slider 29 through a pin shaft. The end of the connecting rod 30 away from the slider 29 is coaxially fixed with a third gear 31 that drives the rectangular frame 27 and the cross-shaped scraper 28 to reciprocate horizontally, and the third gear 31 is meshed with the inner gear ring 16 for transmission.

[0045] A rotating rod 32 is fixedly connected to the outer contour of one end of the cylindrical shell 8 away from the tubular shell 4, and a cylindrical rod 33 is fixedly connected to one end of the rotating rod 32 away from the cylindrical shell 8, and the connecting rod 30 and the third gear 31 are penetrated by the cylindrical rod 33 and movably connected.

[0046] When in use, through the slider 29 set on the rectangular frame 27, the slider 29 is connected to the inner wall of the rectangular frame 27 for lifting and reciprocating movement. Through the connecting rod 30 set on the slider 29 and the third gear 31 set on the connecting rod 30, one end of the connecting rod 30 is connected to the slider 29 for fixed-axis rotation, and the other end of the connecting rod 30 is coaxially fixedly connected to the third gear 31. Through the rotating rod 32 set on the cylindrical shell 8 and the cylindrical rod 33 set on the rotating rod 32, the cylindrical shell 8 is rotated along with the fixed axis, so that the rotating rod 32 can drive the cylindrical rod 33 to rotate in a circle under the action of the cylindrical shell 8, and the cylindrical rod 33 penetrates the connecting rod 30 and the third gear 31 and is movably connected, so that the cylindrical rod 33 is synchronously moved and adjusted on the connecting rod 30 and the third gear 31 along with the axial reciprocating movement of the cylindrical shell 8.

[0047] like Figure 6 and Figure 7As shown, in the initial state, the cylindrical rod 33 performs circular motion, and the third gear 31 is meshed with the inner gear ring 16 for transmission, so that the third gear 31 drives the connecting rod 30 to rotate on the cylindrical rod 33 under the action of the inner gear ring 16. At this time, the rectangular frame 27 is in a stationary state, and the slider 29 is lifted and reciprocated along the inner wall of the rectangular frame 27 under the action of the connecting rod 30.

[0048] As the inner gear ring 16 rotates toward the C direction, the rotation of the inner gear ring 16 changes the rotation speed of the third gear 31. At the same time, the third gear 31 changes the angle of the connecting rod 30 under the action of the inner gear ring 16. At this time, the rotation of the connecting rod 30 can drive the rectangular frame 27 to move horizontally back and forth along the inner wall of the rectangular through groove 121, so that the cross-shaped scraper 28 moves back and forth under the action of the rectangular frame 27 to scrape and clean the dust attached to the surface of the filter 13. At the same time, the greater the angle of rotation of the inner gear ring 16 toward the C direction, the smaller the blocking area of ​​the baffle 14 on the filter 13, which can increase the horizontal reciprocating movement range of the rectangular frame 27, increase the dust cleaning area of ​​the cross-shaped scraper 28 on the surface of the filter 13, and further maintain the cleanliness of the filter plate and the ventilation efficiency.

[0049] Furthermore, the existing device can automatically adjust the air volume of the fan according to the internal temperature of the power distribution cabinet during actual use, which is easy to use and better than traditional products.

[0050] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description is made here. Although the embodiments of the present invention have been shown and described, for ordinary technicians in this field, it can be understood that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A power distribution cabinet, characterized in that: It comprises a cabinet body (1), wherein the cabinet body (1) is provided with a blower mechanism for cooling the interior of the cabinet body (1); The air blowing mechanism comprises a rectangular shell (2) which is penetrated and fixedly connected on one side of the cabinet (1); a fixing rod (3) is fixedly connected to the inner wall of the rectangular shell (2) near one end of the cabinet (1); a cylindrical shell (4) is penetrated and rotatably connected to the fixing rod (3); fan blades (5) for blowing air inside the cabinet (1) are penetrated and rotatably connected at both sides of the cylindrical shell (4) away from one end of the fixing rod (3); an outer gear ring (6) is fixedly connected to the outer contour of the cylindrical shell (4) near one end of the fixing rod (3); a transmission gear (7) which is transmission-connected to a rotor on a generator is penetrated and rotatably connected on one side of the fixing rod (3); the transmission gear (7) is meshed with teeth on the outer gear ring (6); and an adjusting mechanism for automatically adjusting the air supply volume of the fan blades (5) according to the internal temperature of the cabinet (1) is provided on the cylindrical shell (4).

2. A power distribution cabinet according to claim 1, characterized in that: The regulating mechanism comprises a piston rod (9) fixedly connected to the inner wall of a cylindrical shell (4) at one end close to the fan blade (5), a cylindrical shell (8) sleeved on the outer contour of the piston rod (9) at one end away from the fan blade (5) for axial reciprocating movement, and alcohol easily expanded by heat is provided on the inner wall of the cylindrical shell (8) at one end away from the piston rod (9), and the cylindrical shell (8) is in contact with and movably connected to the inner wall of the cylindrical shell (4).

3. A power distribution cabinet according to claim 2, characterized in that: The opposite ends of the two blades (5) are coaxially fixedly connected with a first gear (10), and the opposite sides of the two first gears (10) are respectively meshed and transmission-connected with tooth plates (11), and the two tooth plates (11) are fixedly connected to an adjacent end of the cylindrical housing (8).

4. A power distribution cabinet according to claim 1, characterized in that: A support rod (12) is fixedly connected to the interior of the rectangular shell (2) at one end away from the fixing rod (3), and filters (13) for filtering dust in the air are fixedly connected to the surfaces of both sides of the support rod (12) opposite to the rectangular shell (2); The rectangular shell (2) is provided with limiting grooves (201) at symmetrical positions on both sides of one end of the support rod (12), and baffles (14) for shielding the filter (13) are movably connected at symmetrical positions on both sides of the inner walls of the two limiting grooves (201), and an auxiliary mechanism for controlling the air intake volume of the filter (13) is provided on the rectangular shell (2).

5. A power distribution cabinet according to claim 4, characterized in that: The auxiliary mechanism comprises a rectangular plate (15) fixedly connected to the inner wall of a rectangular housing (2), an inner toothed ring (16) penetrating and rotatably connected to the rectangular plate (15), push rods (17) for pulling baffles (14) on both sides to reciprocate towards or away from each other are rotatably connected via pins at symmetrical positions on both sides of the inner toothed ring (16) near one end of the filter screen (13), the push rods (17) at one end away from the inner toothed ring (16) being rotatably connected to the baffles (14) on the adjacent side via pins, an arc-shaped rack (18) fixedly connected to the outer contour of the end of the inner toothed ring (16) away from the push rod (17), and an L-shaped rod (19) fixedly connected to one end of the rectangular plate (15) near the arc-shaped rack (18), and a second gear (20) meshing with the arc-shaped rack (18) is penetrated and rotatably connected near the end of the L-shaped rod (19).

6. A power distribution cabinet according to claim 5, characterized in that: An inner screw sleeve (22) is penetrated and rotatably connected to an end of the L-shaped rod (19) away from the second gear (20); an outer screw sleeve (25) is screwed onto the inner wall of the inner screw sleeve (22); and the outer screw sleeve (25) is penetrated and rotatably connected to the cylindrical housing (8); an end of the outer screw sleeve (25) away from the L-shaped rod (19) is fixedly connected to a limit rod (26) for supporting the outer screw sleeve (25); and an end of the limit rod (26) away from the outer screw sleeve (25) penetrates the L-shaped rod (19) and is movably connected; an end of the second gear (20) close to the L-shaped rod (19) is coaxially rotatably connected to a first belt pulley (21); and a second belt pulley (23) is fixedly connected to an outer contour of the inner screw sleeve (22) at a position corresponding to the first belt pulley (21); and a transmission belt (24) for driving the second gear (20) to perform fixed-axis reciprocating rotation is sleeved on the outer contours of the second belt pulley (23) and the first belt pulley (21).

7. A power distribution cabinet according to claim 4, characterized in that: The support rod (12) is provided with a rectangular through slot (121); the inner wall of the rectangular through slot (121) on the side of the support rod (12) close to the baffle (14) is movably connected to a rectangular frame (27) that can reciprocate horizontally; a side of the rectangular frame (27) away from the push rod (17) is fixedly connected to a cross-shaped scraper (28) for cleaning dust on the surface of the filter (13); and a cleaning mechanism is provided on the rectangular frame (27) for driving the cross-shaped scraper (28) to reciprocately scrape dust off the surface of the filter (13).

8. A power distribution cabinet according to claim 7, characterized in that: The cleaning mechanism comprises a rectangular frame (27) whose inner wall is movably connected to a slider (29) for lifting and reciprocating movement, the slider (29) being rotatably connected to a connecting rod (30) via a pin, the connecting rod (30) having one end away from the slider (29) being coaxially fixedly connected to a third gear (31) for driving the rectangular frame (27) and the cross-shaped scraper (28) to reciprocate horizontally, and the third gear (31) is meshed with the inner gear ring (16) for transmission.

9. A power distribution cabinet according to claim 2, characterized in that: A rotating rod (32) is fixedly connected to the outer contour of one end of the columnar housing (8) away from the tubular housing (4), and a columnar rod (33) is fixedly connected to one end of the rotating rod (32) away from the columnar housing (8), and the connecting rod (30) and the third gear (31) are penetrated by the columnar rod (33) and movably connected.

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